Axial Treated Material Feed Type Patents (Class 34/135)
  • Patent number: 10377679
    Abstract: A kitchen waste treatment device in environment-protection-device field comprises a main fermentation barrel comprising a barrel body mounted on supporting brackets and including a feed inlet, a discharge outlet and a material chamber, push plates located within the material chamber to push materials therein to move along barrel body axial direction and further a gas inlet system having gas inlets located at same barrel body end as the discharge outlet and a gas-exhaust system having gas-exhaust ports located at same barrel body end as the feed inlet; a feeding apparatus whose feed end communicates with the feed inlet; and a power apparatus driving the barrel body to rotate around its axis. The gas inlets/gas-exhaust ports communicate with the material chamber. The treatment device has simple compact structure and small occupied area and realizes material horizontal propulsion and repeated rotational-stirring in the barrel body by barrel body rotation, achieving material-degrading-and-fermenting object.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: August 13, 2019
    Assignee: ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY CO. LTD., XIFU, GUANGDONG
    Inventors: Zongcai Huang, Taiping Zhang, Huageng Hu, Nengwu Zhu, Xinghong Jin, Jian Wang, Tingting Yang, Yi Liu, Manying Chen
  • Patent number: 9567529
    Abstract: A method is described for quenching coke coming from the distillation of coal and having a temperature higher than or equal to 900° C., comprising the steps of a) lowering the temperature of said coke to about 700-300° C. by heat exchange with a fluid through walls of a thermally conductive material interposed between coke and fluid, b) feeding a continuous flow of said coke at about 700-300° C.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: February 14, 2017
    Assignee: AMBIENTE E NUTRIZIONE S.R.L.
    Inventor: Giuseppina Cerea
  • Patent number: 8910393
    Abstract: A drum or drum segment for a drying apparatus of pourable material having built-in components arranged within the drum, which is rotatable about its central axis. The built-in components thoroughly mix and convey the pourable material from a drum entrance to a drum exit while guiding through a tempered gaseous transport fluid. Several support rings are arranged between the built-in components and the drum. The support rings are arranged to be statically supporting, but compensate tensile and compressive stresses in an elastic manner. The support rings are connected to the built-in components, a support frame and the drum, or a combination thereof A method for producing the drum or drum segments includes pre-mounting modules of built-in components and inserting the modules of built-in components into the drum or the drum segment.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: December 16, 2014
    Assignee: Dieffenbacher GmbH Maschinen—und Anlagenbau
    Inventors: Günter Kuhn, Wolfgang Fix-Mumme, Reinhard Kassner
  • Publication number: 20100186254
    Abstract: The invention relates to a rotary drum in which the hygienic status of pourable solids separated from liquid cattle manure is modified by aerobic heating in such a manner that said solids can be reused as bedding in cattle sheds. The object of the invention is to obtain a high loading factor amounting to 60-70% filling of the drum which is located horizontally for installation in an insulated container. In accordance with the invention, the loaded solid is kept in a chamber and is only transferred to the drum when there is no solid surrounding the chamber. The crucial element is a flap of the chamber which only opens and closes in this area. If there is any solid resting on the outside of the flap then opening of the flap is prevented.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 29, 2010
    Inventor: Dietrich Eichler
  • Patent number: 7669348
    Abstract: An apparatus, method and system is provided for treating sewage sludge by heating the same in a container to drive off pathogens and/or pasteurize the sewage sludge while the material is tumbled in the container and with moisture gases being evaporated therefrom and drawn off from the container. After treatment the treated sludge is discharged from the container. There is provided at least one weight-responsive member on which the container is mounted, and a control is provided connected to the one or more weight-responsive member whereby the solids content of the treated material can be determined by measuring the difference in weight of material in the container, before and after moisture is drawn off from the material and prior to its discharge from the drum. The control is preferably effected by means of a computer.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: March 2, 2010
    Assignee: RDP Company
    Inventors: Richard W. Christy, Robert Van Bramer, Michael Quici
  • Publication number: 20080184587
    Abstract: A drier for drying wet material includes a drying chamber with a plurality of heating region regions and a plurality of drying regions, alternatively located along the path of the material through the drier. Each of the heating regions is heated with heating fluid by a heating recirculation system wherein the heating fluid overall flows generally concurrently with the material in the chamber, but wherein the heating fluid can flow in various ways within each heating region. A fluid circulation system flows drying fluid through each of the drying regions generally in countercurrent flow relative to the flow of material through the drier, although the drying fluid can flow in various ways within each drying region. The drying fluid exiting the drier is used to preheat the heating fluid exiting the drier prior to the heating fluid reentering the drier. Makeup heat is supplied to the system.
    Type: Application
    Filed: February 4, 2008
    Publication date: August 7, 2008
    Inventor: Steve D. Shivvers
  • Patent number: 6883249
    Abstract: An insulating flight for a dryer incorporates inner and outer plates with insulation between them. The concave surfaces of the inner and outer plates provide a space for the insulation and allow for thermal expansion without stressing the welds between the inner and outer plates.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: April 26, 2005
    Assignee: Internetek, Inc.
    Inventor: Gary Catlett
  • Patent number: 6823607
    Abstract: A plant for the drying and treatment of a pourable mineral material. The plant includes a combustion apparatus, introducing smoke gases into a rotary-driven rotary drum for cocurrently with the pourable mineral material. The rotary drum is inclined in the conveying direction, has installed fittings on the inner circumference and is connected sealingly at its outlet end to a shaft. The installed fittings in a front introduction region of the drum are transport blades. The shaft is put under a vacuum by means of a fan and is set up to take over the material and gas stream emerging from the rotary drum. A Venturi fitting is arranged coaxially in the rotary drum, upstream of the outlet, and a bypass for conveying air is arranged in the drum casing in the introduction region.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: November 30, 2004
    Assignee: Enerco BV
    Inventors: Heinrich Emil Jerzembski, Jan Bot
  • Patent number: 6752156
    Abstract: A humidifying cylinder includes a first rotatable cylinder having an inlet end and an outlet end and a plurality of first blades extending substantially radially outwardly from an exterior surface of the first cylinder. The humidifying cylinder further includes a second rotatable cylinder having an inlet end and an outlet end and a plurality of second blades extending substantially radially inwardly from an interior surface of the second cylinder, the second cylinder being substantially coaxial with the first cylinder and the first cylinder being disposed inside of the second cylinder such that the exterior surface of the first cylinder and the interior surface of the second cylinder define an annular space. At least one drive is provided for rotating the first cylinder and the second cylinder. At least one conduit is disposed in the annular space for introducing moisture into the annular space. A method of humidifying material is also disclosed.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: June 22, 2004
    Assignee: Philip Morris Incorporated
    Inventor: Steven Rohn Wagoner
  • Patent number: 6718652
    Abstract: A rotary particle dryer has a shaft extending along an axis and a hollow drum coaxially and spacedly surrounding the shaft and rotatable about the axis in a direction. A set of axially extending inner baffles fixed to the shaft extend radially outward therefrom and each form at least one angularly open inner pocket. A set of axially extending outer baffles fixed to the drum extend radially inward therefrom and each form at least two angularly open outer pockets. Structure mechanically connects the inner baffles directly with the outer baffles.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: April 13, 2004
    Assignee: Buttner Gesellschaft fur Trocknungs-und Umwelttechnik mbH
    Inventors: Andreas Klug, Wolfgang Schröder
  • Patent number: 6584699
    Abstract: A single pass, multiple stage, rotary drum heat exchange dryer (22) is provided for drying products such as distillers grains and includes a tubular shell (64) with a moist product inlet (66), an opposed dried product outlet (70), and an internal drying chamber (78). The chamber (78) includes a convection drying first stage (80), and conductive drying final curing stage (82) an intermediate stage (84); the stage (84) is subdivided into a plurality of preferably contiguous drying zones (86-92). The zones (86-92) include individual flighting assemblies (164, 214, 226, 234) which are of increasing density and present progressively increasing heat transfer ratios. Preferably, one of the initial zones has a heat transfer ratio of from about 1.5-2.5 ft−1, whereas another of the zones closer to the final stage has a heat transfer of from about 2.75-3.75 ft−1.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: July 1, 2003
    Assignee: Ronning Engineering, Co., Inc.
    Inventors: Richard L. Ronning, Robert Kolb
  • Publication number: 20030115769
    Abstract: A rotary dryer. The dryer includes a rotary drum and a dehumidifier. the rotary cylinder receives dry air and wet material, wherein The wet material is rotated by the rotary drum to completely contact the dry air so that The wet material changes to grains. the dehumidifier receives wet air from the rotary drum, dehumidifies the wet air, and introduces dry air to the rotary cylinder.
    Type: Application
    Filed: June 28, 2002
    Publication date: June 26, 2003
    Inventors: Jia-Hung Huang, Jia-Ming Huang, Churng-Kwang Lai, Chi-Ming Tsai, Jsan-Yan Chang, Cheng-Che Chen, Jui-Chin Teng, Yao-Ling Huang, Shann-Shiuann Tzeng
  • Publication number: 20030009900
    Abstract: The present invention relates to a grain roasting apparatus in which a blower is installed at one side of a body having a support at a lower portion of the same, a heated air flow path is installed in the blower, a heater is provided, a peel collecting port and a discharge port are installed at the other side of the body, rotation portions are installed in an upper portion of the heated air flow path and an upper portion of the discharging port, respectively, a rotary drum is installed in the rotation portions, rotation members are rotated together with the rotary drum, the rotary drum is inserted into the rotation members, the rotary is installed eccentrically about a rotation center, support portions are installed opposite each other at both ends of the same, a heated air flow port having a net and connected with the heated air flow path is protruded from one side of the support, the heated air inlet is inserted into an insertion portion of the rotary port, respectively, and is supported therein, a ring gea
    Type: Application
    Filed: October 6, 2001
    Publication date: January 16, 2003
    Inventors: Yong Ji, Sang-Joon Yoon
  • Patent number: 6478461
    Abstract: A hot-mix asphalt manufacturing system including treatment of emissions and recirculated gases includes a counter-flow rotary dryer 12 having a combustion chamber 28, an inlet 24 for dry ingredients, an outlet 26 for hot-mix asphalt, and a plate collector 70 for treating recirculated gases. A fiber bed filter 90 (FIG. 5) is provided to remove hydrocarbons and particulates from the rotary dryer emissions before they are released into the surrounding environment. A cooling zone 92 is provided upstream from the fiber bed filter to cool the emissions to a temperature that is compatible with the fiber bed filter.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: November 12, 2002
    Assignee: RAP Technologies, Inc.
    Inventor: Robert E. Frank
  • Patent number: 6438862
    Abstract: The invention is a distributed airways airflow dryer system for coffee beans and other such bulk crops. The interior volume or container of the dryer or dehydrator system that holds the bulk crops, is filled with an airways network structure that provides uniformly distributed open wall airflow passageways in the bulk crops. The airflow passages communicate with airflow openings in the walls or bottom of the container, to divide and admit the drying airflow into and through the full volume of the bulk crops as a large number of individual airstreams. Corrugated, ribbed, or cross-ribbed airflow plates are preferred embodiments that provide narrow open grooves or channels that expose the beans or kernels of the bulk crop directly to the airflow. This results in faster drying and greater uniformity of the drying effect on the full volume of the bulk crops.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: August 27, 2002
    Inventor: Paul B Soucy
  • Patent number: 6415527
    Abstract: The invention concerns a steam dryer, in particular a steam dryer intended for drying of concentrate materials, which dryer comprises a cylindrical, rotatable drum (11), in whose interior a set of steam pipes (12) consisting of a number of pipes has been fitted to revolve along with the drum. The steam intended for drying of the material has been arranged to be supplied into the set of steam pipes (12) by means of steam supply devices fitted at a first end (10A) of the dryer, and at the opposite end (10B) of the steam dryer (10), conveyor (16) has been installed to supply the material to be dried into the drum (11) interior. The dried material (25) has been arranged to be discharged through the first end (10A) of the dryer.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: July 9, 2002
    Assignee: Kumera Corporation
    Inventors: Eino Räsänen, Olli Tiitu
  • Patent number: 6282809
    Abstract: The present invention relates to a vane assembly for use in a drying apparatus comprising a drying chamber with a heating jacket which is used for drying moist material such as fish offal, food leftovers etc. The drying chamber is substantially cylindrical and has in the preferred embodiment a conical shape with a very small angle. In one embodiment the vane assembly can be employed in a substantially cylindrical drying chamber with straight side walls. The vane assembly is further suited for a drying chamber where the moist material is fed in at the bottom of the drying chamber, either from below, up through the bottom, or from above, through a pipe connection or the like down to the bottom of the chamber, with the result that the supply of the moist material is near the bottom of the drying chamber.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: September 4, 2001
    Assignee: Articare AS
    Inventor: Trond Sunde
  • Patent number: 6146133
    Abstract: The present invention concerns a process for the production of cement clinker in rotary kilns with substitution of primary raw materials and fuels by use of residual materials containing minerals and combustible parts with moisture contents of up to about 65% without predrying. The process makes possible a material and/or thermal utilisation of residual materials in the case of saving of the clay and fuel sources and relief of dumping with simultaneous lowering of the emissions, above all NO.sub.x, in the cement rotary kiln.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: November 14, 2000
    Assignee: Heidelberger Zement AG
    Inventors: Helmut S. Erhard, Volker Schneider, Paul Korf
  • Patent number: 6128828
    Abstract: A drying machine includes a hot air blower, a housing divided horizontally into plural long chambers having an open upper side, a closed bottom and two longitudinal sides bored with through holes, a screw conveyor respectively positioned in each long chamber, and a motor to rotate all the screw conveyors, and a sending-out screw conveyor positioned on the bottom of the housing. Each screw conveyor has an inner screw and an outer screw twisting in opposite direction for conveying, squeezing, mixing and stirring material at the same time dried by hot air coming from the blower. Material falls down from a funnel on the upper side of the housing and gradually falling down through the through holes and an outlet in an end of the bottom of the highest long chamber and then into a second highest long chamber and so on to the lowest portion of the housing to be conveyed by the sending-out screw conveyor to an exit through which dried material falls down through for collected.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: October 10, 2000
    Inventor: Chao-Chun Wang
  • Patent number: 6125549
    Abstract: A system for the thermal processing of material in a housing having an inlet for receipt of the materials and an outlet for the discharge of the material after thermal treatment. The heating of the materials is accomplished, at least in part, by contact of the materials with a particulate medium which has been preheated in a separate heating operation employing infrared radiant heaters. The housing includes a heating zone separate from the zone used for thermal processing of the materials with the separate heating zone including the infrared radiant heaters. The particulate medium is introduced to the heating zone and brought to a controlled temperature. The medium is then conveyed to the processing zone where it is admixed with the materials being thermally processed. A shrouded zone is located intermediate the processing and particulate medium heating zones. This zone comprises a section of reduced clearance thereby providing a gas and dust lock between the processing and heating zones.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: October 3, 2000
    Assignee: Hosokawa Bepex Corporation
    Inventor: Ilya Pikus
  • Patent number: 6119363
    Abstract: Directly heated rotary drums are used in the drying of pourable goods such as wood chips or strands. Drums are provided with built-in fixtures such as cross fixtures, in order to ensure good heat transmission from the drying gas to the goods. The invention comprises a design for a rotary drum (4) which enables good transmission of drying gas to the goods and which is cheap to produce and assemble in comparison with cross fixtures. According to the invention the built-in fixtures in the rotary drum (4) extend radially in the direction of the middle of the drum, starting from the perimeter, over an area of 60 to 85% of the radius of the rotary drum (4), form at least two pockets, and run, apart from the area close to the perimeter, substantially in the direction of rotation (25), in front of the radial starting from their point of attachment. These radially shaped built-in fixtures enable constant distribution of the goods over the cross-section and are substantially cheaper to manufacture and assemble.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: September 19, 2000
    Assignee: Buttner Gesellschaft fur Trocknungs-und Umwelttechnik GmbH
    Inventors: Karl-Friedrich Bahner, Dagmar Bautzmann, Wolfgang Schroder
  • Patent number: 6110430
    Abstract: The present invention is a decontamination plant for removing contaminates from contaminated material. The decontamination plant comprises an outer shell including a cavity therein. A drum formed of heat conductive material is rotatably mounted in the cavity defined by the outer shell so as to form an annular heating chamber between the drum and the outer shell. A plurality of heat sources are positioned to discharge heat into the annular heating chamber. The drum also has an inner surface defining a decontamination chamber. A tube is concentrically supported within the decontamination chamber formed in the drum. The tube has an inlet which is in communication with the annular heating chamber so as to receive flue gases therefrom. The outlet of the tube is positioned to exhaust gases from the drum. The drum is slightly inclined from a material receiving opening to a soil discharge end so as to cause the material which is being decontaminated to progress through the decontamination chamber as the drum rotates.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: August 29, 2000
    Assignee: CMI Corporation
    Inventors: George W. Swisher, Jr., Jerry R. Collette, Jianmin Zhang
  • Patent number: 6101736
    Abstract: A combined spray and rotary drying apparatus includes a spray dryer having a housing defining a spray drying chamber, an annular inlet and an outlet. A burner and atomizer sprayer are provided in the spray drying chamber. The outlet of the spray drying chamber feeds into a rotary drying drum. A raw material feed chute is also provided for feeding raw material of relatively low moisture content directly to the rotary dryer. Methods of drying a raw material and of processing raw animal parts are also disclosed.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: August 15, 2000
    Assignee: Griffin Industries, Inc.
    Inventors: Dennis B. Griffin, John L. Crowley
  • Patent number: 6085440
    Abstract: A process and an apparatus for drying of a material in the form of a paste or a filter cake in a spin flash dryer. Particles are separated by a classifier (6) in the chamber (1) in such a way that oversize fraction is withheld in the chamber (1) and the desired fraction is removed (3, 9). A possible undesired undersize fraction is strained off and recycled (4, 10, 11) externally back to the dryer chamber (1). The spent drying gas is recycled to the dryer chamber (1). In either, the energy in the spent drying gas may be made use of in a heat exchanger and there is no or only little emission to the environment. Products preferably dried according to the invention are fruit and beet pulps, destillers residues, pesticides, pigments, dyes, ceramics, active coal, sludge and zeolites.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: July 11, 2000
    Assignee: APV Anhydro AS
    Inventor: Jens Getler
  • Patent number: 6079118
    Abstract: A continuous drying system for flake-formed or granular solid, of which bottom inside surface is semi-cylindrical and arranged almost horizontally, comprises drying system main body having a supplying means of a drying object at one end thereof and having a discharging means at the other end thereof, and a coil-formed sending apparatus arranged rotatably inside the main body, and a bar-formed or blade-formed stirring member arranged between the sending apparatus transversely. The drying object is transferred by said coil-formed sending apparatus, and a part of the drying object is retreated while stirring by scooping up the drying object with the stirring member along the inside surface of the main body of the drying object. The transfer of the drying object is delayed in comparison with the rotation of the sending apparatus.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: June 27, 2000
    Inventor: Shin Kiyokawa
  • Patent number: 6065224
    Abstract: A device for the aerobic treatment, conditioning and/or drying of moist, substantially solid or paste-like, at least partly organic material, has a vessel containing paired, Venetian-blind-like walls, with adjustable blades, forming at least one reaction chamber, at least one air inlet chamber and at least one air discharge chamber, and containing supports which are in spatially staggered array inside the reaction chamber in such a way that they provide the best possible pressure relief for the filling. The invention also relates to a process using said device.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: May 23, 2000
    Assignee: Interlicense Den Haag B.V.
    Inventor: Erich Eigner
  • Patent number: 5996245
    Abstract: An aeration-type rotary dryer injects air into or onto a flow of materials a rotating cylinder. The air is supplied to an air duct (21) axially passing through the cylinder (10) from the outlet box (11) to the inlet box (12). The axial duct (21) is composed of a plurality of longitudinally, successively connected tubular members (22, 23, 24) each nearer to the inlet box being smaller in diameter than other. The most inlet-sided member (24), located in a central opening (32) of an inlet partition (31) of the cylinder, has the smallest diameter, so that the inlet partition has the central opening reduced and its threshold height increased. This results that the materials are prevented from returning to the inlet box out of the cylinder. The most outlet-sided member (22), located in a central opening (34) of an outlet partition (33) of the cylinder, has the largest diameter, so that a void space in the central opening (34) may be too small to exhaust air.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: December 7, 1999
    Assignee: Yamato Sanko MEG. Co., Ltd.
    Inventor: Yukio Yamato
  • Patent number: 5974688
    Abstract: A method and drying apparatus for drying a quantity of sludge.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: November 2, 1999
    Assignee: Sludge Drying Systems, Inc.
    Inventors: Hille Domingue, James A. Martin
  • Patent number: 5810471
    Abstract: An apparatus for the treatment of 100% reclaimed asphaltic pavement (RAP) uses low temperatures and no direct radiation from a burner flame to the RAP. The RAP is first heated in a counter flow drum which is supplied with hot combusting gases generated by a remote low NOx burner. The temperature of the drum input gases is preferably around 1100 degrees F and the output temperature of the gases may be 100 degrees F or less greater than the input temperature of the RAP. The RAP may be heated with a microwave oven to raise the RAP to a final temperature, although this step is not absolutely necessary in the counterflow design of this invention.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: September 22, 1998
    Assignee: Cyclean, Inc.
    Inventors: Robert H. Nath, John Wiley, Robert Erickson
  • Patent number: 5737849
    Abstract: A recycled asphalt product (RAP) drying apparatus comprising a three-zone counterflow RAP dryer and a duct system to recycle essentially all of the hot gases back through the system. The three-zone RAP dryer has a combustion zone at one end, a drying zone at the other end, and a buffer zone between the combustion and drying zones. A RAP inlet to introduce RAP into the dryer is included at one end of the drying zone, and a RAP outlet to remove RAP from the dryer is included at the other end of the drying zone. A duct pathway routes hot air from the drying zone back to the buffer zone so that hot air may be recycled through the apparatus.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: April 14, 1998
    Assignee: Jat Enterprise Inc. of Indiana
    Inventors: Troy R. Morrison, Billy Joe Mullinax
  • Patent number: 5638607
    Abstract: A roasting apparatus for coffee beans and other food includes a removable drum on the housing rotatable about a horizontal axis and drive means on the housing for supporting and rotating the drum. The drum has a plurality of internal vanes arranged such that i) as the drum is rotated in one direction the beans are stirred and retained by the vanes within the drum, and ii) as the drum is rotated in the opposite direction the beans are moved by the vanes toward the drum opening for dispensing from the roasting apparatus. A removable cover includes a safety interlock which, when activated, prevents opening of the cover when the drum is at bean roasting temperature and which automatically deactivates upon cooling of the drum to permit opening of the cover to remove the drum.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: June 17, 1997
    Assignee: Source Intermarketing AG
    Inventors: Anthony R. Lemme, Chester Fudge
  • Patent number: 5628126
    Abstract: Apparatus for drying a wet material such as sewage sludge comprises a drum (11) mounted for revolution about a horizontal axis and containing interconnected inner (22) and outer (21) concentric spirals containing a continuously-recirculatable charge of particulate heat exchange/pulverizing medium in each coil of the spirals. Sludge is introduced at one end and mixed with the heated charge; the charge and sludge traverse the length of the drum together through the outer spiral while drying takes place; the dried material is removed at the other end and the charge transferred to the inner spiral for transmission to the first end while re-heating takes place by ducted heated air.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: May 13, 1997
    Assignee: Stephen Manton North
    Inventor: Roger D. North
  • Patent number: 5588223
    Abstract: Methods and apparatus are disclosed for restrained paper drying in order to produce high performance paper with enhanced stiffness and, in the process, substantially improve paper properties and reduce fiber usage. The paper web is held in a restrained position on a fabric by air suction imposed from beneath the web and is of sufficient application to prevent shrinkage of the web. The web is simultaneously dried by high velocity, high temperature air or superheated steam. For improved finish properties, the wet paper web may be pressed onto a polished heated metal cylinder with restraint being imposed by gluing.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: December 31, 1996
    Assignee: Asea Brown Boveri Inc.
    Inventor: Hugh G. Marshall
  • Patent number: 5581902
    Abstract: A rotary drum dryer is provided which will dissipate heat from the drum and which will allow the drum to expand. The rotary drum dryer includes an elongate cylindrical drum which rotates on a base and a tire assembly mounted to the drum. The tire assembly includes a band extending circumferencially around the drum and being radially spaced from the drum and a circumferential tire mounted on the band. A plurality of linkage assemblies are spaced around the drum to physically connect the tire assembly to the drum and a plurality of gussets which maintain a desired spacing between the tire assembly and the drum to allow the drum to move relative to the tire assembly. The gussets each include a gusset body having a top edge and a notch formed in the top edge. The gussets act as vanes to dissipate heat from the drum before the heat reaches the tire assembly.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: December 10, 1996
    Assignee: Didion Manufacturing Company
    Inventors: Charles J. Didion, Michael S. Didion
  • Patent number: 5579587
    Abstract: A recycled asphalt product (RAP) drying apparatus comprising a three-zone counterflow RAP dryer and a duct system to recycle essentially all of the hot gases back through the system. The three-zone RAP dryer has a combustion zone at one end, a drying zone at the other end, and a buffer zone between the combustion and drying zones. A RAP inlet to introduce RAP into the dryer is included at one end of the drying zone, and a RAP outlet to remove RAP from the dryer is included at the other end of the drying zone. A duct pathway routes hot air from the drying zone back to the buffer zone so that hot air may be recycled through the apparatus.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: December 3, 1996
    Assignee: JAT Enterprises Inc. of Indiana
    Inventors: Troy R. Morrison, Billy J. Mullinax
  • Patent number: 5566469
    Abstract: A thermal vaporization apparatus includes a cylindrical tube having two ends. A base is provided, with the tube being rotatable with respect to the base. A first drive mechanism applies rotating force to the tube. An auger having two ends extends through the tube, and a second drive mechanism applies rotating force to the auger. At least one gas-fired burner to heat the exterior of the tube while in rotation is provided. A feed mechanism for introducing wet material into the interior of the tube and exterior of the auger within the tube is also provided.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: October 22, 1996
    Assignee: Fen-Tech Environmental, Inc.
    Inventors: Danny R. Bolton, David L. Bigham
  • Patent number: 5555639
    Abstract: An anti-clogging rotary drum dryer for drying stranded material is provided which includes a tubular, rotatable housing having an inlet for receiving drying gas and wet material, as well as first and second, apertured, telescopically interfitted tubes within the housing and defining the dryer flow path. The first and second tube apertures are designed for passage of the stranded material without clogging, and filler and lifting flight structure is provided within the dryer for assuring smooth, trouble-free operation.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: September 17, 1996
    Assignee: Productization Inc.
    Inventors: Jeffrey T. Livingston, Andrew D. Livingston
  • Patent number: 5463819
    Abstract: A dehydration treatment apparatus for sludge wherein organic sludge and a modifying/setting agent are charged into a rotating drum and the sludge is dehydrated and dried. The apparatus comprises a rotating drum, a sludge charging hopper arranged on the inlet side of said rotating drum, a discharging screw arranged on the outlet side of the rotating drum, at least two rectangular blades that are projected from each of circular surfaces arranged toward the feeding direction from the inlet side of the inner circumferential surface of the rotating drum and are slanted downward at a prescribed angle toward the feeding direction, and an agitating/feeding means wherein the positions of the blades on the circular surfaces are made different stepwise successively in the direction of rotation toward the feeding direction so that sludge may be scraped up by the blades on the fore circular surface to be fed forward.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: November 7, 1995
    Inventor: Yasumasa Komori
  • Patent number: 5456024
    Abstract: An apparatus and a process for treating household refuse are disclosed. Household refuse or garbage is comminuted, dried and mixed with granular mineral substance, preferably sand, at a temperature of up to 1000.degree. C. and the mixture is homogenized and degassed by the contact of the refuse with the hot sand until the garbage and refuse has been reduced in volume to a desired degree.
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: October 10, 1995
    Inventors: Hans Klausmann, Ralf Klausmann
  • Patent number: 5455005
    Abstract: Material remediation apparatus includes a remediation drum through which materials, such as soil contaminated with hydrocarbons, are advanced from a feed end to a discharge end of the drum. A tube extending concentrically from the discharge end of the drum into the drum forms a combustion chamber. Materials being decontaminated advance through an annular space between the tube and the drum. The tube is axially first of converging and then of diverging shape, as viewed from the discharge end of the drum. A turbo burner injects combustible gases into the tube which are burned within the diverging shape of the tube. A portion of the burned gases reflow from the outlet of tube through the annular space to the discharge end of the drum. In a zone of the drum occupied by the tube materials are heated by conduction and radiation of energy passing through the wall of the tube as well as by convective heating from the reflow gases. Hot gases are exhausted from the drum at the feed end thereof.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: October 3, 1995
    Assignee: Cedarapids, Inc.
    Inventors: Lawrence G. Clawson, Joseph E. Musil
  • Patent number: 5454176
    Abstract: A dryer for drying material carried along and dried by hot gases including a hollow rotatable drying drum with an inlet and a discharge end, means for driving the drum in rotation and a group of flights projecting into the gas flow stream to break up the material and retard the speed of flow of the material with the flowing gases with the flights arranged in one group at the outer periphery inside the drum and the other supported on a central axially extending core member arranged on the ends of arms projecting radially from the core member to provide satellite groups which are adjustable in a radial rotational and axial directions to change their location relative to the gas flow.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: October 3, 1995
    Assignee: Beloit Technologies, Inc.
    Inventors: Richard J. Gobel, Daniel W. Thomas
  • Patent number: 5431560
    Abstract: A device for supplying gas to a rotary cylinder by means of a slip ring channel is described, a relative movement between rotating part and stationary part of the slip ring being permitted.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: July 11, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Helker, Matthias Weis
  • Patent number: 5405579
    Abstract: For the thermal treatment of contaminated soils, excavated soil is heated by indirect heat exchange up to 650.degree. C. in a rotary drum in the absence of oxygen. Pollutants are separated from the soil by a desorption medium. Moisture in the soil vaporized to steam can serve as the desorption medium. The resultant gaseous pollutant stream is condensed, and the pollutants are separated.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: April 11, 1995
    Assignee: Linde Aktiengesellschaft
    Inventors: Reiner Melzer, Klaus Mikulla
  • Patent number: 5403395
    Abstract: An arrangement for the application of topical substances to base products. A rotatable star-shaped reel structure is rotated, in which a flowable base product is tumbled while being coated with the topical substance so as to ensure an appropriate uniform distribution of the topical substance on the surfaces of the base product while inhibiting the formation of clump-like agglomerates of coated base product on the internal surfaces of the reel.
    Type: Grant
    Filed: May 11, 1993
    Date of Patent: April 4, 1995
    Assignee: Kraft General Foods, Inc.
    Inventors: Nancy J. McCullough, Kenneth A. Seymour, Harold F. Yother
  • Patent number: 5393501
    Abstract: Material remediation apparatus includes a remediation drum through which materials, such as soil contaminated with hydrocarbons, are advanced from a feed end to a discharge end of the drum. A tube extending concentrically from the discharge end of the drum into the drum forms a combustion chamber. Materials being decontaminated advance through an annular space between the tube and the drum. The tube is axially first of converging and then of diverging shape, as viewed from the discharge end of the drum. A turbo burner injects combustible gases into the tube which are burned within the diverging shape of the tube. A portion of the burned gases reflow from the outlet of tube through the annular space to the discharge end of the drum. In a zone of the drum occupied by the tube materials are heated by conduction and radiation of energy passing through the wall of the tube as well as by convective heating from the reflow gases. Hot gases are exhausted from the drum at the feed end thereof.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: February 28, 1995
    Assignee: Cedarapids, Inc.
    Inventors: Lawrence G. Clawson, Joseph E. Musil
  • Patent number: 5372458
    Abstract: A method is provided for treating used potassium chloride (KCl) drilling mud for disposal. The process comprises feeding the mud into one end of a rotary tube, advancing the mud through the rotating tube and heating the mud by cascading action using lifters, to expose it to a hot gas stream, thereby partially drying the mud to lumps, further modifying the lumps by contacting them with a burner flame to form clinker pellets, and finally contacting the clinker pellets with a second flame to complete the drying process, producing dried clinker pellets containing the majority of the KCl in the mud, the pellets having a structure that resists the leaching action of water. The pellets further lend themselves to being evenly distributed over fields, so that unwanted excessive concentrations of KCl can be avoided.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: December 13, 1994
    Inventors: Henry Flemmer, Arne E. Hansen
  • Patent number: 5312599
    Abstract: An improved apparatus and method for the manufacture of activated carbon wherein a carbonaceous raw material impregnated with a chemical activating agent is treated by controlling the rate of heat transfer to the particles via indirect heating of the activation furnace and simultaneously introducing a flow of independently controlled sweep gas at spaced intervals along the path of travel of the particles through the furnace to more precisely control the activation reaction and the level of densification of the particles during certain stages of treatment. In a more preferred embodiment, the particles are processed in a plurality of treatment stages related to the rate of evolution of water and/or the evolution of water and the chemical activating agent and the rates of heat transfer and the volume flow rate of sweep gas are closely controlled relative to achieving predetermined levels of densification of the particles during each treatment stage and selected levels of activation properties in the end product.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: May 17, 1994
    Assignee: Westvaco Corporation
    Inventor: Frank R. Schwartz, Jr.
  • Patent number: 5287633
    Abstract: A coffee roaster in the form of a rotating drum having internal baffles forming oppositely-pitched helical paths that drive tumbling coffee beans toward the center of the drum in one direction of rotation of the drum and toward the ends of the drum in the other direction of rotation of the drum, the rotating drum being contained within a vessel and providing with a source of gas in the space between drum, the gas being hot enough to effect roasting of coffee beans.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: February 22, 1994
    Inventor: Kerry Sachs
  • Patent number: 5285581
    Abstract: A dryer assembly dries waste materials to a predetermined moisture level. The dryer includes a drum having an inlet where waste materials and hot gasses are simultaneously introduced, and an outlet where dried materials and hot vapors are transferred out of the dryer. The drum presents a plurality of preheat baffles in which the material is heated by but does not contact the gasses, thereby avoiding premature combustion of the material. Baffle sections located downstream of preheat baffles uniformly distribute material downstream into a primary drying section of the drum, where the material is mixed with the gasses to uniformly dry the material to the predetermined moisture level. The primary drying section includes alternating baffle sections which dry the material and which recycle material that is not yet dried back into the preceding baffle sections, respectively.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: February 15, 1994
    Assignee: Combustion Design Corporation
    Inventor: David R. Walker
  • Patent number: 5270017
    Abstract: An improved apparatus and method for the manufacture of activated carbon wherein a carbonaceous raw material impregnated with a chemical activating agent is treated by controlling the rate of heat transfer to the particles via indirect heating of the activation furnace and simultaneously introducing a flow of independently controlled sweep gas at spaced intervals along the path of travel of the particles through the furnace to more precisely control the activation reaction and the level of densification of the particles during certain stages of treatment. In a more preferred embodiment, the particles are processed in a plurality of treatment stages related to the rate of evolution of water and/or the evolution of water and the chemical activating agent and the rates of heat transfer and the volume flow rate of sweep gas are closely controlled relative to achieving predetermined levels of densification of the particles during each treatment stage and selected levels of activation properties in the end product.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: December 14, 1993
    Assignee: Westvaco Corporation
    Inventor: Frank R. Schwartz, Jr.