Film Type Patents (Class 159/5)
  • Patent number: 10194676
    Abstract: A process for the production of crumb is disclosed in which a wet crumb feedstock comprising bulk sweetener, protein and water is formed and then simultaneously dried and comminuted in a thin layer rotary paddle dryer (20). The wet crumb feedstock is preferably formed into discrete, free-flowing granules prior to the simultaneous drying and comminuting. Apparatus for the production of crumb is also disclosed.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: February 5, 2019
    Inventors: Karina Wehrle, Christopher Abbott
  • Publication number: 20140231027
    Abstract: A total evaporator for fluids, including a cold chamber to prevent pre-evaporation, an evaporation region connected thereto having narrow flow cross-section for fast evaporation of the fluid, and a subsequent vapor chamber for pulsation damping and the controlled superheating of the vapor, the evaporation region being formed by a gap between concentrically nested cylindrical and/or conical tube sections and heat required for the evaporation and superheating processes is supplied by electric heating and/or by hot fluid and/or by catalytic or homogeneous combustion via the wall of the concentric tubes.
    Type: Application
    Filed: February 18, 2013
    Publication date: August 21, 2014
    Inventor: Gudrun Friedrich
  • Publication number: 20140209450
    Abstract: A wet material having at least a liquid portion is dewatered by providing one or more wicking members of wicking material arranged to transfer moisture passively by wicking therethrough from a contacting portion in contact with the wet material to an evaporating portion where the transferred liquid portion is arranged to be evaporated. In some embodiments conductive elements are included in the wicking member to assist in distributing heat across the wicking member which enhances the evaporation of moisture transferred therethrough from the wet material. In yet further embodiments, a condenser member is provided in proximity to the evaporating portion of the wicking member so as to be arranged to condense and collect at least some of the liquid portion evaporated from the wicking member.
    Type: Application
    Filed: August 21, 2012
    Publication date: July 31, 2014
    Inventor: Brian J. Peever
  • Patent number: 8461655
    Abstract: A method for manufacturing a micromechanical sound transducer includes depositing successive layers of first and second membrane support material on a first main surface of a substrate arrangement with a first etching rate and a lower second etching rate, respectively. A layer of membrane material is then deposited. A cavity is created in the substrate arrangement from a side of the substrate arrangement opposite to the membrane support materials and the membrane material at least until the cavity extends to the layer of first membrane support material. The layers of first and second membrane support material are etched by applying an etching agent through the cavity in at least one first region located in an extension of the cavity also in a second region surrounding the first region. The etching creates a tapered surface on the layer of second membrane support material in the second region.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: June 11, 2013
    Assignee: Infineon Technologies AG
    Inventors: Wolfgang Klein, Uwe Seidel, Stefan Barzen, Mohsin Nawaz, Wolfgang Friza, Xu Cheng, Alfons Dehe
  • Publication number: 20130087291
    Abstract: A cooling tower that concentrates solids is described, wherein the cooling tower employs a fill material and a set of louvers that are positioned adjacent to the fill material. The cooling tower also employs a buildup prevention system that is permanently affixed to the cooling tower. The build-up prevention system is positioned adjacent to the fill material and configured to reduce solid buildup on the fill material louvers in the set of louvers.
    Type: Application
    Filed: September 27, 2012
    Publication date: April 11, 2013
    Applicant: SPX Cooling Technologies, Inc.
    Inventor: SPX Cooling Technologies, Inc.
  • Patent number: 8404086
    Abstract: Effect separation of a composition of matter that includes at least two seed or plant oil derivatives into at least one desired product stream using at least two separation operations, which are independently selected from among several potential separation operations, in conjunction with at least one recycle stream from a separation operation.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: March 26, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: George J. Frycek, Shawn D. Feist, Timothy C. Frank, Zenon Lysenko, Joe D. Phillips, Bruce W. Pynnonen
  • Patent number: 8308913
    Abstract: Disclosed is an apparatus for recovering an acrylic acid from a mixture containing acrylic acid, acrylic acid dimer and impurities with high boiling point, including: an acrylic acid recovering device that comprises an acrylic acid distillation unit being present within an acrylic acid dimer pyrolysis tank, and is operated under reduced pressure; a separation column for removing impurities with high boiling point from the mixture which is introduced into the acrylic acid recovering device; and a line for introducing the mixture into the acrylic acid recovering device.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: November 13, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Seong Pil Kang, Seok Kwan Choi, Kyoung Su Ha, Jun Seok Ko, Boo Gon Woo, Young Bae Kim
  • Publication number: 20110226685
    Abstract: Apparatuses and methods for removing volatiles from fluid systems. The apparatuses and methods include evaporator sections. The apparatuses and methods may furthermore include a heater disposed at least in part in the evaporator section, which may have a ridge on its surface. The apparatuses and methods may furthermore include an evaporation tube positioned around the heater, which may have a conically shaped outer surface. The apparatuses and methods may also include an air inlet and an air outlet in the evaporator section.
    Type: Application
    Filed: June 1, 2011
    Publication date: September 22, 2011
    Applicant: Next Generation Filtration Systems, LP
    Inventor: Kenneth L. Geiger
  • Patent number: 7879140
    Abstract: Coating material is fed into a vacuum container inside which are apparatus for separating gas from the coating material. The degassing apparatus (10) has two separate compartments (11, 12) so that degassing is carried out in two different stages by using a single apparatus.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: February 1, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Eero Kesti, Esa Forsten
  • Publication number: 20100154998
    Abstract: The present disclosure teaches a method and apparatus to gel a dopant material, which may be a low viscosity liquid, and apply it towards beneficially coating dopant liquid in the manufacture of a three-dimensional thin-film solar cell substrate. As an alternate to using high viscosity dopants, a dopant coating liquid, which is typically distributed in low viscosity alcohol based liquid forms, may instead be utilized as a dopant material in a gelatinous state towards the manufacture of a three-dimensional thin-film solar cell substrate. The methods and devices disclosed herein provide for enhancing the high viscosity characteristics of a dopant material. The present disclosure teaches the use of the dopant material in its gelatinous state towards an exemplary cavity filling method.
    Type: Application
    Filed: November 25, 2009
    Publication date: June 24, 2010
    Inventor: Qing Yuan Ong
  • Publication number: 20090107640
    Abstract: An evaporator is provided for evaporation of liquid from a solution or liquid mixtures, together with methods of operation of the evaporator. The evaporator comprises a chamber (1); a liquid reservoir (3) for holding a heat transfer liquid exposed to the interior of the chamber; a support (6) for supporting a container (8) in the chamber, such that the liquid sample in the container is exposed to a fluid path (15) for connection to a condenser (16), the fluid path being separated from the chamber interior, and at least a portion of the container is closely thermally coupled to the chamber interior; and means (4) for heating the heat transfer liquid in the reservoir to create heat transfer liquid vapour, which in use condenses and releases latent heat of vaporisation to the liquid sample in the container. As the temperature of the sample is dependent on the saturated vapour temperature of the liquid in the reservoir, the temperature of the samples is reliably limited, thereby avoiding overheating.
    Type: Application
    Filed: March 14, 2007
    Publication date: April 30, 2009
    Applicant: GENEVAC LIMITED
    Inventor: Donald Roger Lee-Smith
  • Publication number: 20080190567
    Abstract: The present invention is directed to methods for removing CO2 from air, which comprises exposing sorbent covered surfaces to the air. The invention also provides for an apparatus for exposing air to a CO2 sorbent. In another aspect, the invention provides a method and apparatus for separating carbon dioxide (CO2) bound in a sorbent.
    Type: Application
    Filed: March 15, 2006
    Publication date: August 14, 2008
    Inventor: David J. Winsness
  • Publication number: 20080128094
    Abstract: An evaporation source device comprises a fusion section 24, a retainer section 21, an evaporator section 22, and an ejector section 23. When cylindrical heaters 241 and 211 are electrically energized, a linear evaporation material 31 is fused. A molten evaporation material 32 runs from a heating container 242 and retains in a heating container 212. The evaporation material 32 in the heating container 212 runs down from a descending opening 216 along a descending column 224. The evaporation material 32 evaporates by the radiation heat from the cylindrical heater 221 on the falling process. The vapor of the evaporation material 32 is ejected from the nozzle 232 onto the substrate 61. Each of the cylindrical heaters 241, 211, 221, and 231, which is made of graphite, generates heat when a voltage is applied between electrodes 213 and 214, between electrodes 214 and 222, or between electrodes 232 and 233.
    Type: Application
    Filed: October 20, 2005
    Publication date: June 5, 2008
    Inventor: Tatsuo Fukuda
  • Publication number: 20080110577
    Abstract: In one aspect of the invention, a method and related system efficiently and effectively recover a significant amount of valuable, useable oil from byproducts formed during a dry milling process used for producing ethanol. The method may include forming a concentrate from the byproduct and recovering oil from the concentrate. The step of forming the concentrate may comprise evaporating the byproduct using a multi-stage evaporator, as well as recovering the oil before the final stage of the evaporator. Further, the step of recovering oil from the concentrate may comprise using a centrifuge and, in particular, a disk stack centrifuge. Other aspects of the invention include related methods and subsystems for recovering oil.
    Type: Application
    Filed: September 17, 2007
    Publication date: May 15, 2008
    Inventor: David J. Winsness
  • Publication number: 20080066874
    Abstract: A water desalinator includes a plurality of spaced tubes for establishing wet channels with fins extending between adjacent tubes for establishing a plurality of dry channels. A blower blows air through the dry channels, and air is bled from the dry airstreams to form wet airstreams flowing through the wet channels. A saline water tank is in fluid communication with the tubes to introduce saline water into the wet channels. Heat is extracted from the dry airstreams and transferred to the saline water, causing it to evaporate into the wet airstreams. By rejecting the heat out of the wet airstream in a condensation chamber, fresh water condenses out of the wet airstream and deposits into a water tank.
    Type: Application
    Filed: September 19, 2006
    Publication date: March 20, 2008
    Inventors: Mohinder Singh Bhatti, Ilya Reyzin, Shrikant Mukund Joshi
  • Patent number: 6902690
    Abstract: The invention relates to a method for producing cellulosed shaped bodies. (a) Cellulose and an aqueous aminoxide are mixed, whereby a suspension is produced. (b) A cellulose solution is produced from the suspension, whereby water evaporates. (c) A first property and a second property of the produced cellulose solution is measured and the measured value is used for correcting the composition of the solution and (d) the cellulose solution is extruded through a gap of air and into an aqueous regenerating bath where said solution is coagulated to form shaped bodies.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: June 7, 2005
    Assignee: Zimmer AG
    Inventors: Frank Gunter Niemz, Wilhelm Meyer, Tanja Mainzer Althof
  • Patent number: 6596244
    Abstract: An arrangement for a falling film type reactor uses corrugated plates to improve the distribution and dispersion of the gaseous reactant into the liquid. Corrugated plates introduce increased turbulence for promoting better distribution and dispersion of the gas. Corrugation angles can be varied to suit the fluid flow properties of the liquid reactant. The reactor arrangement can also include heat transfer channels defined by the corrugated plates in an alternate arrangement of heat transfer channels and gas liquid contacting channels. The corrugations may also be varied to suit the particular heat transfer requirements of the reactions. The corrugated plates are spaced apart in the contacting channels to prevent localized film contact and placed in contact in the heat exchange portion to stabilize the plate elements defining the corrugations.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: July 22, 2003
    Assignee: UOP LLC
    Inventor: Peter R. Pujado
  • Patent number: 6471919
    Abstract: An apparatus for removing fluorinated and chlorinated compounds contained in waste gas streams from semiconductor etch and deposition processes. The apparatus has a treatment chamber in which a plurality of liquid films are formed to absorb the fluorinated and chlorinated compounds contained in the waste gas streams that pass through the liquid films. The apparatus includes a tank for receiving the mixture of the absorbed fluorinated and chlorinated compounds and the liquid, and a dehumidifying device for stabilizing and dehumidifying the humidified waste gas streams.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: October 29, 2002
    Assignee: Winbond Electronics Corp.
    Inventors: Chung-Chih Wang, Jerry Sun, Wu-Chung Wen
  • Publication number: 20020134517
    Abstract: A mixed liquid of two or more components different in boiling temperature from each other and soluble in or compatible with each other is evaporated into a mixed vapor having a similar composition to that of the mixed liquid by using an apparatus having a thin film evaporator (1) having a feed inlet (1a) and a delivery outlet (1b), while forcedly circulating the non-evaporated portion of the mixed multi-component liquid by withdrawing the non-evaporated mixed liquid portion from the delivery side end portion of the evaporator and returning the mixed liquid portion into the feed side end portion of the evaporator through a circulating line (3), and the resultant mixed multi-component vapor can be used as a mixed material vapor for a gas phase catalytic reaction for producing, for example, a mono and/or a di-alkylether of an aromatic dihydroxy compound.
    Type: Application
    Filed: March 28, 2002
    Publication date: September 26, 2002
    Applicant: Ube Industries, Ltd.
    Inventors: Yukio Inaba, Kazunori Fujita, Hiroshi Kofuji
  • Patent number: 6265625
    Abstract: This invention relates to a process for preparing and isolating glycols and to a thin-film evaporator which is used in carrying out the process.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: July 24, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Frans Vansant, Jozef de Hert, Dieter Köffer, Gerhard Theis, Winfried Terjung
  • Patent number: 5766412
    Abstract: A system is disclosed for reducing the amount of waste water and recovering reusable constituents from a waste stream comprising at least two constituents having different relative volatilities. The system includes a vapor thermocompression evaporator, into which the waste stream is directed, to vaporize one of the constituents within the waste stream without appreciably vaporizing other constituents in the waste stream. The vapor thermocompression evaporator also has a vapor compressor for compressing the vaporized fraction of the first constituent and delivering this compressed vaporized fraction to transfer heat to the waste stream. The system further has a film evaporator in series with the vapor thermocompression evaporator which transfers heat to the stream after it leaves the vapor thermocompression to vaporize substantially all of the first constituent without appreciably vaporizing the second constituent.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: June 16, 1998
    Assignee: Recovery Technologies Corporation
    Inventor: Jay M. Railey
  • Patent number: 5716496
    Abstract: A method and an apparatus are provided for controlling crystallization (and thus preventing harmful fouling of heat transfer surfaces) during the treatment of black liquor. The black liquor is concentrated to a high dry solids content (at least about 70%, e.g. about 75-90%) in a falling film crystallizing apparatus (e.g. falling film evaporator). A part of the liquor flowing from the heat transfer surfaces and collected in a retention vessel (e.g. an interior volume of the evaporator) is recirculated to the heat exchange surfaces and a part of the liquor is discharged for further treatment (e.g. combustion in a recovery boiler). A part of the black liquor in the recirculation system is returned directly to the retention vessel in order to facilitate mixing and thus to bring about, in the retention vessel, crystallization of inorganic salts of the black liquor that is as complete as possible.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: February 10, 1998
    Assignee: Ahlstrom Machinery Oy
    Inventor: Erik Agren
  • Patent number: 5628901
    Abstract: A single vessel with no moving parts is constructed to perform the functions of coalescing, vacuum dehydration, and thin film evaporation.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: May 13, 1997
    Assignee: Castrol Industrial North America Inc.
    Inventors: William L. Lawrence, Robert D. Coyle
  • Patent number: 5507983
    Abstract: Continuous elongate members such as filaments are produced by forming a hot dope of cellulose, amine oxide and water, extruding the dope through a die assembly and precipitating the cellulose to form the bodies and maintaining the concentration of the dope at a predetermined value by monitoring the refractive index of the dope before it is extruded.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: April 16, 1996
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventors: Alan Sellars, Michael C. Quigley
  • Patent number: 5462643
    Abstract: Reprocessing mixtures which contain organic solvents and constituents of low volatility and may contain water: includes introducing the mixture into a concentration apparatus of a solvent recovery system, concentrating the mixture in the concentration apparatus by evaporating off a portion of a readily volatile fraction and feeding this readily volatile fraction to a separation column. A portion of the concentrated mixture from the concentration apparatus is conducted away into a separation apparatus where the constituents of low volatility are separated off from the concentrated mixture and ejected from the solvent recovery system. The concentrated mixture is conducted away, freed from the constituents of low volatility, from the separation apparatus.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: October 31, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Georg-Emerich Miess, Peter M. Roth, Karl Heinrich, Siegfried Rewitzer
  • Patent number: 5419814
    Abstract: A thin layer liquid film type evaporator including a cylindrical heating column, a heater for heating the cylindrical heating column, a liquid film forming plate disposed in the cylindrical heating column, a baffle also disposed in the cylindrical heating column and a feed nozzle disposed at the upper center of the cylindrical heating column. The liquid film forming plate has an outer diameter such that a clearance may be formed between the outer edge thereof and the inner circumferential surface of the heating column and that the liquid may flow through the clearance. Thus, a thin layer liquid film type evaporator which has a simple mechanism and can exhibit excellent evaporation efficiency can be provided.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: May 30, 1995
    Assignees: Idemitsu Kosan Corporation Limited, Tokyo Rikakikai Co., Ltd.
    Inventors: Takatoshi Kunihiro, Takao Katayama, Shinichi Ariga, Mitsuo Tanuma
  • Patent number: 5354524
    Abstract: The concentration of a dope of cellulose/amine oxide/water for use in the manufacture of continuous filaments of cellulose is controlled by measuring its refractive index and adjusting the water content to maintain the refractive index within specified limits.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: October 11, 1994
    Inventors: Alan Sellars, Michael C. Quigley
  • Patent number: 5082535
    Abstract: An apparatus for dissolving oil or PCB which exists in the electrical insulation of parts to be cleaned, wherein a solvent is evaporated during a heating phase by an evaporator located with the parts in an autoclave. The solvent vapor condenses on the parts and penetrates into the electrical insulation to form an oil or PCB-solvent mixture. The apparatus provides for a plurality of intermediate pressure reductions which are carried out in the autoclave, and during each intermediatre pressure reduction the solvent is simultaneously evaporated from the oil or PCB-solvent mixture, directly from the autoclave. That is, during each of the pressure reductions, the solvent supply is discontinued and the mixture circulated through a circulating line. Following the completion of each intermediate pressure reduction, the pure oil or PCB present in a condensate vessel is pumped out by an intermediately located feed pump through a connecting line and into a reservoir.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: January 21, 1992
    Assignee: Micafil, AG
    Inventors: Gustav Oesch, Paul Gmeiner, Urs Hofer
  • Patent number: 4847007
    Abstract: For bonding particularly radioactive wastes into a binder, a transporting and mixing device is used which transports the mixture to a storage tank prior to the hardening. The wastes are transported into the mixing zone by gravity and aided by the conveyor helix which also imparts additional wall cleaning action through the dry conveyor zone. A single or multi-component binder is concurrently transported in a direction lateral to the mixing tool to the mixing zone. The mixture is conducted in a straight-line extension of the transport and mixing direction to an outlet to which the storage tank is connected.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: July 11, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Horst Queiser, Siegfried Meininger, Karl-Heinz Kleinschroth, Dietmar Bege
  • Patent number: 4683025
    Abstract: A method and apparatus for converting a long tube vertical evaporator to a falling film evaporator in a manner which permits salvaging most of the long tube vertical evaporator structure. The bottom chamber of the existing evaporator is extended to define a flash chamber intermediate the existing heat exchanger chamber and the bottom chamber. A vapor riser conduit is provided for directing vapor from the flash chamber to the vapor separation chamber positioned above the heat exchanger chamber. A recirculation conduit is provided for directing liquid from the bottom chamber therethrough into a distribution chamber which is provided above and in communication with the upper ends of the heat exchange tubes positioned in the heat exchanger chamber. The distribution chamber is preferably provided with a plurality of spray nozzles which communicate with the recirculation conduit to evenly distribute a film of liquid downwardly through the heat exchange tubes.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: July 28, 1987
    Assignee: The Graver Company
    Inventor: A. Roland Flores
  • Patent number: 4668345
    Abstract: Desalination apparatus comprising a vessel, an evaporation surface for receiving saline water in the vessel, a condensation chamber arranged in the vessel beneath the evaporation surface, an evaporation chamber arranged in the vessel above the evaporation surface, a fresh water tank for containing a reservoir of fresh water and fresh water vapor thereabove, a first conduit connecting the fresh water tank and the condensation chamber, a pump for compressing in the condensation chamber fresh water and fresh water vapor to maintain a pressure-temperature differential between the condensation chamber and the evaporation chamber at the evaporation surface, a second conduit connecting the evaporation chamber and the fresh water tank for removal of fresh water vapor from the evaporation chamber and its delivery to the reservoir of fresh water, and valves and conduits for conveying saline water to the evaporation surface and for taking off fresh water accumulated in the fresh water tank.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: May 26, 1987
    Inventor: Thomas B. Warren
  • Patent number: 4655879
    Abstract: An improved process for purification of glycerol obtained from natural sources comprising alkalizing a glycerol-containing crude mixture in the presence of air for oxidation, evaporating the mixture in a thin-layer evaporator with redistillation of the residue, rectification and reevaporation in a packed column characterized by low-pressure-loss plates with a falling-film evaporator designed for internal and external partial condensation and to separate off unwanted constituents of the mixture, bleaching the product with activated carbon and separating the bleach in known manner.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: April 7, 1987
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rolf Brockmann, Lutz Jeromin, Wilhelm Johannisbauer, Helmut Meyer, Otto Michel, Juergen Plachenka
  • Patent number: 4584064
    Abstract: The present invention concerns a process for the thin layer evaporation of liquid in which the thin layer to be evaporated is formed by centrifugation.It is characterized in that the pointed part of the said cone is immersed in a reserve of liquid to be evaporated and a communication is established between the external face of the said pointed part of the cone and the internal face of this cone, so that the thin layer subjected to evaporation is formed on the internal face and on the external face of the cone.It concerns a device and installation for the distillation by evaporation in thin layers, particularly for hydrocarbons, and process for operating this device.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: April 22, 1986
    Assignee: Elf France
    Inventors: Andre Ciais, Gilles Variot
  • Patent number: 4549978
    Abstract: A process for manufacturing detergent powder containing heat-sensitive components is disclosed. The process involves preparation of two separate crutcher slurries, one containing the relatively heat-stable components which is sprayed in a conventional manner and a second containing heat-sensitive components which is sprayed into the spray-drying tower at a level lower than the level at which the drying air is injected. Desirably the second slurry is sprayed in a direction which includes an upward component, so as to lengthen the pathway of the sprayed droplets.
    Type: Grant
    Filed: October 25, 1984
    Date of Patent: October 29, 1985
    Assignee: Lever Brothers Company
    Inventors: Elfed H. Evans, Klaus Hirte, Gerd Stremmel
  • Patent number: 4441437
    Abstract: In a process for the utilization of the heat content of combustible components in sludges, in particular in clarification sludges, the sludge, which still contains a proportion of water, is burnt in a pressure-tight furnace. The resulting steam and exhaust gases are conducted through heat exchangers and a thin layer evaporator, and the exhaust heat and heat of condensation effect, in one or more stages, a heating and thickening of the sludge to be burnt. Pressure-drop machines can be driven by the excess pressure of the exhaust gases, steam circuits and liquid circuits.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: April 10, 1984
    Assignee: Saarberg-Fernwarme GmbH
    Inventor: Gerhard Moskau
  • Patent number: 4409137
    Abstract: A process and apparatus for solidifying radioactive waste liquid containing dissolved and/or suspended solids is disclosed. The process includes chemically treating for pH adjustement and precipitation of solids, concentrating solids with a thin-film evaporator to provide liquid concentrate containing about 50% solids, and drying the concentrate with heated mixing apparatus. The heated mixing apparatus includes a heated wall and working means for shearing dried concentrate from internal surfaces and subdividing dry concentrate into dry, powdery particles. The working means includes a rotor and helical means for positively advancing the concentrate and resulting dry particles from inlet to outlet of the mixing apparatus. The dry particles may also be encapsulated in a matrix material. Entrained particles in the vapor stream from the evaporator and mixer are removed in an integral particle separator and the vapor is subsequently condensed and may be recycled upstream of the thin-film evaporator.
    Type: Grant
    Filed: March 25, 1981
    Date of Patent: October 11, 1983
    Assignee: Belgonucleaire
    Inventors: Leo M. Mergan, Jean-Pierre Cordier
  • Patent number: 4329204
    Abstract: A multiple effect diffusion distillation system includes a plurality of parallel plates for continuous recovery of heat having opposed evaporation and condensation faces for alternately evaporating and condensing phases of a liquid fed on to the upper end of the plates in a thin film for gravity flow along the evaporator face of the plates with vapor condensing on the condensation faces and with means for collecting and recovering the condensed product from the system. Alternate embodiments including a solar heat input system and others include multiple modular systems.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: May 11, 1982
    Inventors: John P. Petrek, Clifford M. Cantrell
  • Patent number: 4289577
    Abstract: An apparatus for concentrating polyvinyl alcohol liquid which comprises a supply line for supplying a liquid containing polyvinyl alcohol, a filter in connection with the supply line for filtering foreign materials from the liquid, a first tank for receiving the liquid after the liquid is passed through the filter, a preliminary mixing apparatus in fluid connection with the first tank, an evaporator in fluid connection with the preliminary mixing apparatus, the evaporator including a plurality of pipes through which the liquid may flow, a steam heating assembly in connection with the evaporator for heating the liquid flowing through the plurality of pipes, a second tank in fluid connection with the evaporator, the second tank receiving the liquid from the plurality of pipes within the evaporator, a return pipe in fluid connection with the second tank for returning liquid contained within the second tank to the preliminary mixing apparatus such that the liquid may be combined within the preliminary mixing appa
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: September 15, 1981
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Katsuya Mabuchi, Shigeyuki Yamamoto
  • Patent number: 4241043
    Abstract: The invention relates to a multiple phase flow tube for evaporating and reacting components in compound mixtures in which a spiral pipe is arranged within a multiple phase flow pipe. The components are propelled by means of an internally flowing gas stream in an annular shaped passage formed by a spiral tube and a second tube arranged as a core of the spiral tube. The second tube contains a heat exchange medium. The spiral tube is arranged within a cylindrical casing which contains a heat exchange medium. A gaseous stream of a reduced amount is then sufficient for carrying out the particular chemical process desired.
    Type: Grant
    Filed: March 14, 1979
    Date of Patent: December 23, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hartmut Hetzel
  • Patent number: 4217176
    Abstract: A vapor compression distiller has a vertically oriented cylindrical tank and a heat exchanger having a plurality of groups of heat exchange tubes disposed one above the other. Internal baffling channels vapor through the groups of heat exchange tubes in a serial relation commencing with the vertically lowest group. Feed liquid is distributed from the upper end of the vessel downwardly over the surfaces of the tubes. This causes the evaporation of a first portion of the feed liquid and a condensation of the vapor. The evaporated and unevaporated portions of the feed liquid pass downwardly past the heat exchange tubes with the unevaporated portion collecting in a liquor well at the lower end of the vessel and the vapor passes upwardly along the sides of the vessel heat exchanger and outwardly to a compressor, the outlet of which is connected to the vapor inlet of the system.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: August 12, 1980
    Assignee: Aqua-Chem, Inc.
    Inventor: Arthur P. Antony
  • Patent number: 3977364
    Abstract: Apparatus for evaporating liquids, including means to form the liquid into a thin film on a heatable wall, the means comprising a porous layer having a first portion which covers the wall concerned and at the top of the wall passes via a bend into a second portion which is spaced from the first portion and is surrounded by a liquid-receptacle.
    Type: Grant
    Filed: February 27, 1974
    Date of Patent: August 31, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Josephus Cornelis Wilhelmus Franciscus Gijsbers, Hans Heinrich Otto Oskar Hermann Uhlemann