Exhaust Gas Or Vapor From Treatment Zone Heats Treating Gas Or Vapor Patents (Class 34/514)
  • Patent number: 9302502
    Abstract: A recording apparatus has a recording head capable of performing recording by discharging an aqueous ink to a target recording medium, a drying portion which dries the aqueous ink recorded on the target recording medium by the recording head, a collecting portion which collects vapor at least containing water evaporated from the aqueous ink by the drying portion, a heating and compressing portion of heating and compressing the vapor collected by the collecting portion, and an ejecting portion of ejecting the vapor heated and compressed by the heating and compressing portion to the target recording medium on which recording is performed.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: April 5, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Tsuneyuki Sasaki
  • Patent number: 9228781
    Abstract: A system for drying vehicle bodies and/or for controlling the temperature thereof. The system includes a cabin and has a heater for heating hot air for the cabin. The system is equipped with a mechanical energy-consuming device, for example, a generator and/or a fan. The heater contains at least one heat exchanger. The hot exhaust gas of a thermal engine can be supplied to the heat exchanger. The thermal engine is coupled to the mechanical energy-consuming device, for example, the generator, so as to move together. Because of the coupled movement, mechanical energy can be transmitted from the thermal engine to the mechanical energy-consuming device.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: January 5, 2016
    Assignee: Duerr Systems GmbH
    Inventors: Juergen Weschke, Dietmar Wieland, Juergen Jost
  • Publication number: 20150020407
    Abstract: In a method for reprocessing wet waste materials containing organic components, in particular sludges in a cement clinker production plant, in which raw meal is preheated in a preheater (3) in countercurrent flow to the hot exhaust gases of a clinker furnace (2), and calcined in a calciner (4) fired with alternative fuels, the wet waste materials are dried in a drying unit (18) using a hot gas produced from the preheater waste heat and the dried waste materials and the drier exhaust gases are discharged from the drying unit (18), wherein the drier exhaust gases are introduced into the calciner (4).
    Type: Application
    Filed: May 5, 2014
    Publication date: January 22, 2015
    Applicant: Holcim Technology Ltd
    Inventor: Urs GASSER
  • Publication number: 20130239433
    Abstract: A method for providing fresh air fed through a fan to a burner of a dryer, thereby charging the burner, when the dryer is operated with recirculating air. In commercial dryers in which the drying air is heated by a burner, it is customary to reuse the moist air leaving a drum containing the laundry to be dried as recirculating air. The recirculating air component is increased with increasing drying of the laundry. At the end of the drying operation, when the moist air no longer contains as much moisture as at the start, the moist air is used as recirculating air. The burner then no longer gets enough combustion air, which leads to an incomplete combustion. The dryer can be operated with a higher recirculating air component, an optimal combustion being guaranteed through the charging of the burner with fresh air. The invention permits more economical drying.
    Type: Application
    Filed: March 5, 2013
    Publication date: September 19, 2013
    Applicant: Herbert Kannegiesser GmbH
    Inventors: Wilhelm Bringewatt, Engelbert Heinz
  • Patent number: 8438751
    Abstract: A dryer is provided having a drying chamber for items to be dried and a process air duct in which are located a heater for heating the process air, a blower for driving the process air from the heater through the drying chamber, and a heat exchanger arrangement. Via the heat exchanger arrangement, heat can be withdrawn from the process air flowing away from the drying chamber, and the process air flowing toward the heater can be fed to the heat exchanger. The process air duct is divided into a main duct and a secondary duct, the secondary duct having an evaporator in which condensate that was separated from the process air in the heat exchanger arrangement can be evaporated into the process air flowing therethrough and is connected to the exhaust opening.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: May 14, 2013
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventor: Andreas Stolze
  • Patent number: 8429832
    Abstract: A process and a device for utilization of waste heat from a high-temperature hood in the dryer section of a paper machine. The waste heat from the high-temperature hood is applied to the waste steam and the condensate, respectively, from a steam system by means of a heat exchanger, thus improving utilization of the energy contained in the exhaust air from a high temperature hood.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: April 30, 2013
    Assignee: Andritz AG
    Inventors: Klaus Gissing, Wolfgang Promitzer
  • Publication number: 20130067763
    Abstract: A method of finishing the operation of a heating unit based either on a temperature difference between a drying furnace temperature and a recycling gas duct temperature or on a temperature difference between an exhaust gas duct temperature and a recycling gas duct temperature instead of finishing the operation of the heating unit based only on the drying furnace temperature.
    Type: Application
    Filed: May 12, 2011
    Publication date: March 21, 2013
    Applicant: WOONGJIN COWAY CO., LTD.
    Inventors: Sang Jun Jee, Chan Jung Park, Tae Seok Shin
  • Publication number: 20120304488
    Abstract: The invention relates to a method for drying slurry-like materials, in particular sludge from wastewater treatment plants, including two drying stages, namely: a first indirect drying stage (2), supplied with hot fluid, which receives sludge having an entry dryness Se, and outputs sludge having an intermediate dryness Si and water steam, which is channelled towards a condenser (8) in which a heating fluid, in particular water, is reheated and, in turn, heats a heating gas for a second drying stage (6); and a step (5) of forming strings of sludge at the exit from the first stage; the second stage (6) of drying the strings of sludge using gas at least partially heated by the heat extracted from the condenser, said second stage outputting a slurry having a final dryness Sf; the intermediate dryness Si is controlled according to the measured entry dryness Se and the desired exit dryness Sf, for minimum consumption of the total energy used for drying, the flow rate, pressure and/or temperature of the hot fluid (3)
    Type: Application
    Filed: November 19, 2010
    Publication date: December 6, 2012
    Applicant: Degremont
    Inventor: Pierre Emmanuel Pardo
  • Patent number: 8286368
    Abstract: A method and apparatus for rationalizing the allocation of the heat energy generated from catalytic combustion process for enameling machines wherein a circulating fan is installed above the oven body in a position close to its middle portion; above the front area of the oven body is an organic waste-gas inlet and above which is a primary catalytic chamber. A hot-air allocation chamber is located on the side of the said primary catalytic chamber. The said circulating fan connects the said primary catalytic chamber and the hot-air allocation chamber, delivering the circulating hot air resulting from catalytic combustion into the hot-air allocation chamber which is further connected to the front area, middle area and back area of the oven body via the front air flue, middle air flue and back air flue. With rationalized distribution of heat energy, this invention accelerates the baking speed, thereby improving productivity by 20%.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: October 16, 2012
    Assignee: Dongguan Zelong Wire and Cable Co., Ltd.
    Inventors: Zhide Ye, Benneng Chen, Junkai Sheng, Zhifang Chen, Guozhu Tang
  • Publication number: 20120246967
    Abstract: The heat recovery system includes an oven having a treatment air with a treatment air temperature and a treatment air dew point temperature to treat a product or product in process. A zone outlet exhaust waste treatment air following the treatment of the product. A preheating zone includes a preheating inlet for the introduction of preheating air having a preheating air temperature and a preheating air dew point temperature to preheat the product. A transfer duct extends between the zone outlet of the oven and the preheating zone to transfer a portion of waste treatment air from the oven to the preheating zone to create the preheating air to preheat additional product. The preheating air preheats the product in the preheating zone to a product temperature that is at least equal to the treatment air dew point temperature to eliminate surface condensation on the product during treatment in the oven.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 4, 2012
    Inventors: Nicholson Hirzel, James Breslin
  • Patent number: 7882646
    Abstract: This invention discloses systems and methods for conversion of high moisture waste materials to dry or low moisture products for recycle or reuse. The equipment systems comprise a gas turbine generator unit (preferred heat source), a dryer vessel and a processing unit, wherein the connection between the gas turbine and the dryer vessel directs substantially all the gas turbine exhaust into the dryer vessel and substantially precludes the introduction of air into the dryer vessel and wherein the processing unit forms the dried material from the dryer vessel into granules, pellets or other desired form for the final product. Optionally, the systems and methods further provide for processing ventilation air from manufacturing facilities to reduce emissions therefrom.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: February 8, 2011
    Assignee: EarthRenew, Inc.
    Inventors: Brian N. Gorbell, Christianne Carin, legal representative, Alvin W. Fedkenheuer, John S. Jonasson, Alexander Starosud
  • Publication number: 20100115789
    Abstract: A method for drying a wet material which comprises a liquid Fd to be distilled, uses a gas-tight container system that is resistant to excess and/or negative pressure. The container system comprises a drying container containing the wet material whose temperature can be adjusted, a condenser for condensing the liquid Fd, which has turned to vapor and whose temperature can be adjusted, to give the condensation product, and a vapor chamber connecting the drying container and the condenser. The pressure in the vapor chamber is monitored and controlled in such a manner that drying and distillation are always carried out in a range close to the saturation vapor pressure of the liquid Fd to be distilled. The pressure and the temperature in the vapor chamber are continuously determined. If the pressure goes above the upper limit of the range, the pressure is reduced in such a manner that especially foreign gas is removed.
    Type: Application
    Filed: April 1, 2008
    Publication date: May 13, 2010
    Inventor: Markus Lehmann
  • 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: 20090293303
    Abstract: The subject matter of this specification can be embodied in, among other things, a system for drying biosolids using waste heat from a cement-making process. The system includes an interface with a cement-making component, where the interface is configured to channel a waste heat gas generated during a manufacture of cement. The system includes a dryer that receives wet biosolids and uses heated dryer air in direct contact with the wet biosolids to produce a dried product. The dryer air has an oxygen content below a level allowing combustion to occur. The system includes a heat exchanger that receives the waste heat gas from the interface and uses the waste heat gas to heat the dryer air for the dryer, wherein the waste heat gas and the dryer air do not mix.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 3, 2009
    Inventor: Thomas J. Maestri
  • Publication number: 20090193679
    Abstract: A method for roasting a load of plant biomass, includes the following stages: generation of a treatment gas stream by a thermal generating apparatus, the treatment gas stream being an inert gas consisting essentially of CO2; generation of a bed of material at high temperature, called the thermal base; treatment of the load of biomass with the treatment gas stream, the treatment gas stream being laden with gaseous components including a water steam and volatile organic compounds originating from the load of biomass during the treatment; and recycling of at least a portion of the water steam by passing at least a portion of the laden gas stream through the thermal base.
    Type: Application
    Filed: June 28, 2007
    Publication date: August 6, 2009
    Inventor: Raymond Guyomarc'h
  • Publication number: 20090188128
    Abstract: A process and a device for utilization of waste heat from a high-temperature hood in the dryer section of a paper machine. The waste heat from the high-temperature hood is applied to the waste steam and the condensate, respectively, from a steam system by means of a heat exchanger, thus improving utilization of the energy contained in the exhaust air from a high temperature hood.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 30, 2009
    Inventors: Klaus Gissing, Wolfgang Promitzer
  • Publication number: 20080229610
    Abstract: A method and apparatus are provided for reducing the VOC and CO content of dryer offgas that is discharged into the atmosphere from a moist organic product drying process using thermal oxidizing apparatus that includes a furnace, mixing chamber, thermal oxidizer, tempering chamber, and an indirect gas-to-gas heat exchanger. The dryer offgas is separated into two portions, with a larger portion being preheated by indirect heat exchange with the hot gaseous output from the thermal oxidizer. The non-preheated portion is directed to a rotary waste heat evaporator in which moisture is removed therefrom. The preheated portion is recycled to the hot gas inlet of the dryer and serves the function of dryer heat transfer media. By removing moisture from the non-preheated portion of the offgas that is directed to the thermal oxidizing apparatus, simultaneous achievement of thermal oxidizer temperatures of 1600° F.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 25, 2008
    Applicant: Ronning Engineering Company, Inc.
    Inventor: Richard L. Ronning
  • Publication number: 20080209759
    Abstract: A drier apparatus for removing water from various materials includes a drying chamber, a regenerator system, a drying fluid system, and a heating fluid recirculation system and a method for use of the apparatus. The material to be dried flows concurrently through the drier with a heating fluid that is segregated from the material but in heat transfer relationship with the material. A drying fluid flows countercurrent through the chamber so as to become heated and at least partially saturated from moisture released by the material. The drying fluid is then used to preheat recycled heating fluid which is further heated by a makeup heater. In some embodiments, the drying fluid is also recycled to the chamber after passing through a chiller.
    Type: Application
    Filed: January 25, 2008
    Publication date: September 4, 2008
    Inventor: Steve D. Shivvers
  • Patent number: 7197838
    Abstract: A condenser of a condensing-type dryer is provided. In the condensing-type dryer, a hydrophilic film is formed on a heat emission plate by a plasma discharge. In the heat emission plate, an indoor air can be heat exchanged with a circulation air cycling in a drum. A contact angle of a condensed waterdrop formed on the heat emission plate is decreased through the hydrophilic film, thereby making it possible to decrease a flow resistance due to the condensed waterdrop.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: April 3, 2007
    Assignee: LG Electronics Inc.
    Inventor: Seong Jin Jo
  • Patent number: 7194822
    Abstract: A system and method are provided for controllably drying moisture-containing work pieces. The system comprises a drying compartment defining an internal workspace for housing and drying the moisture-containing work pieces by introducing heat into the internal workspace and heating the moisture-containing work pieces located in the internal workspace by removing heated moisture from the work pieces and absorbing the heated moisture into the air in the workspace to produce heated humidified air. A multi-directional air flow heat exchanger is employed for receiving heated humidified air and atmospheric air and for recycling waste heat from exhaust air from the drying compartment, and for heating the atmospheric air in the heat exchanger using recovered heat extracted from the heated humidified air to a temperature higher than ambient temperature thereby reducing energy costs and drying time and preventing the loss of circulation air.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: March 27, 2007
    Assignee: American Wood Dryers, Inc.
    Inventor: Gary L. Kolari
  • Patent number: 7024796
    Abstract: This invention discloses systems and methods for conversion of manure to novel fertilizer and/or soil builder products useful as input for organic farming operations. The equipment systems comprise a gas turbine generator unit (preferred heat source), a dryer vessel and a processing unit, wherein the connection between the gas turbine and the dryer vessel directs substantially all the gas turbine exhaust into the dryer vessel and substantially precludes the introduction of air into the dryer vessel. The dryer vessel receives the manure for contact with the turbine exhaust gases to convert the manure to a dry material, which is passed to the processing unit where it is formed into granules, pellets or other desired form for the final dry fertilizer product. The method comprises drying, heating and converting the manure to form novel self binding fertilizer and soil builder type products for organic farming and other uses.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: April 11, 2006
    Assignee: EarthRenew, Inc.
    Inventors: Christianne Carin, Christianne Carin, legal representative, Alvin W. Fedkenheuer, John S. Jonasson, Alexander Starosud, Brian N. Gorbell, deceased
  • Patent number: 6983551
    Abstract: Interconnecting substrates used in the manufacturing of microelectronic devices and printed circuit assemblies, packaged microelectronic devices having interconnecting substrates, and methods of making and using such interconnecting substrates. In one aspect of the invention, an interconnecting substrate comprises a first external layer having a first external surface, a second external layer having a second external surface, and a conductive core between the first and second external layers. The conductive core can have at least a first conductive stratum between the first and second external layers, and a dielectric layer between the first conductive stratum and one of the first or second external layers. The conductive core can also include a second conductive stratum such that the first conductive stratum is on a first surface of the dielectric layer and the second conductive stratum is on a second surface of the dielectric layer.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: January 10, 2006
    Assignee: Micron Technology, Inc.
    Inventor: Syed Sajid Ahmad
  • Publication number: 20040261285
    Abstract: A drying machine system utilizing a gas turbine, comprising a gas turbine, a power generator operated thereby, and a waste heat recovering means for recovering heat from exhaust gases from the gas turbine and feeding it to a drying machine, characterized in that the gas turbine is composed of a plurality of unlubricated type micro-gas turbines and the waste heat recovering means is composed of a waste gas feed passageway for feeding waste gases from the gas turbine directly to the drying machine; and a method of use of a drying machine system utilizing the gas turbine. An efficient facility and an efficient method of use are provided wherein the gas turbine is in the form of a plurality of small-sized micro-gas turbines and the turbine shaft bearings are of the type dispensing with lubricating oil, resulting in clean exhaust gases, whereby high temperature exhaust gases can be reused with high efficiency.
    Type: Application
    Filed: May 21, 2004
    Publication date: December 30, 2004
    Inventor: Kenichi Harada
  • Patent number: 6742284
    Abstract: The invention is a drying system and a method for its use, the drying system having a container containing a product to be dried and a dryer. The dryer includes an inlet for providing the drying air, a drying air pathway, and a furnace for heating the drying air. The drying air flows through a supply route to the container, where the drying air dries the product and is converted into a return air. The return air flows through a return route back to the dryer. The return air flows through a return air pathway and a heat exchanger which intersects the return air pathway and the drying air pathway. The heat exchanger transfers heat from the return air to the drying air. The return air is exhausted through an outlet. In a preferred embodiment, the container is a tobacco barn and the product is tobacco.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: June 1, 2004
    Assignee: Advanced Dryer Systems, Inc.
    Inventor: Khanh Dinh
  • Patent number: 6732453
    Abstract: A method and an apparatus for arranging exhaust air and supply air in a drying section covered with a hood (14) in a paper machine, having drying cylinders (10) or the like and devices operating by negative and positive pressure. The exhaust air from the devices operating by negative pressure, such as suction rolls (20) and suction boxes is supplied out from the drying section via a first heat recovery tower (22). Substitute air is supplied via this first heat recovery tower to the runnability components (38) operating by positive pressure in the drying section. Substitute air can be additionally supplied via a second separate heat recovery tower (22′) to devices (40, 42) supplying heating air and/or ventilation air. The main portion of the exhaust air from the air space of the hood is supplied via this second heat recovery tower and out from the drying section.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: May 11, 2004
    Assignee: Metso Paper, Inc.
    Inventor: Petri Norri
  • Patent number: 6651357
    Abstract: Integrated web dryer and regenerative heat exchanger, as well as a method of drying a web of material using the same. The apparatus and method of the present invention provides for the heating of air and the converting of VOCs to harmless gases in a fully integrated manner via the inclusion of a regenerative combustion device as an integral element of the drying apparatus.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: November 25, 2003
    Assignee: Megtec Systems, Inc.
    Inventors: Michael P. Bria, Alan D. Fiers, Andreas C. H. Rühl
  • Patent number: 6412190
    Abstract: A combined infrared and hot air dryer includes a pressurized hood which is fed with combustion air through an air delivery duct. Each cross-direction zone of the hood includes a mixer. The air enters the mixer without any direct connection between the delivery duct and the mixer. Gas is supplied to each mixer from a gas manifold having a gas supply tube for each mixer. Excess air from the hood is fed through thin-walled tubes into the IR exhaust duct in a counter flow fashion to provide pre-heated clean air for air bars trailing the infrared zone.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: July 2, 2002
    Inventor: Thomas Smith
  • Patent number: 6357144
    Abstract: Method for drying wood raw material (10) by means of hot gases (20) supplied to the drying process, in which VOC, apart from water, evaporate from the wood raw material into the gases. The drying process is divided and carried out in at least two sub-steps (I, II), from which process gas (22, 33) is removed separately, and the drying process is thus controlled that VOC evaporate during one of the sub-steps, and the VOC are concentrated to this sub-step. The temperature of the gas containing VOC is increased to a temperature exceeding 180° C. before VOC are oxidized catalytically at said elevated temperature, in order to reduce the discharge of VOC from the drying process.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: March 19, 2002
    Assignee: Valmet Fibertech AB
    Inventors: Lars Nilsson, Stefan Backa, Ulf Persson
  • Patent number: 5983521
    Abstract: A process for drying a wet material in a drying system includes supplying a current of heated gas to a dryer from a combustion chamber. The material is exposed to the current in the dryer. The dried material is separated from the current of heated gas. The current of heated gas is split into a first stream of heated gas and a second stream of heated gas after the dried material has been separated. The first stream of heated gas is introduced into the combustion chamber so that the first stream is further oxidized therein. A third stream of heated gas is removed from the combustion chamber. The third stream includes at least a portion of the first stream. The second stream of heated gas is introduced into the combustion chamber so that it makes up a portion of the current conveyed to the dryer.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: November 16, 1999
    Assignee: Beloit Technologies, Inc.
    Inventor: Stanley P. Thompson
  • Patent number: 5960559
    Abstract: A process and apparatus for drying material, in which a previous dried material is mixed into the wet material to be dried to produce a dried mixture of different particle sizes. The process for drying material requires less industrial equipment implemented in a more economical and simpler plant that can be operated with low energy and maintenance requirments. The amount of fine material obtained after drying is measured and the amount of fine previously dried material mixed into the wet material to be dried is then set in inverse proportion to the quantity of fine dried material produce.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: October 5, 1999
    Assignee: Andritz-Patentverwaltungs-Gesellscaft m.b.h.
    Inventors: Erwin Brunnmair, Reinhard Pinter
  • Patent number: 5758434
    Abstract: A wood drying system to eliminate the discharge of liquid kiln water includes a kiln which is heated to dry a batch of wood, a basin to collect the water driven from the wood, and an evaporator in which the collected water is converted into steam. The steam is provided to the kiln to balance the drying and alleviate the splitting, warping, etc. caused by over drying. The steam is ultimately vented harmlessly into the atmosphere to effectively eliminate any discharge of the kiln water as a liquid.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: June 2, 1998
    Assignee: Georgia-Pacific Corporation
    Inventor: George E. Gipson
  • Patent number: 5653042
    Abstract: The drying apparatus for crop materials particularly alfalfa includes a press with a main press roller and a plurality of subsidiary press rollers which is fed using an additional guide roller cooperating with the transportation belt and guide fingers in the main roller to direct the bulky crop into the nip between the rollers for extracting juice and providing a partially dried crop. The partially dried crop is supplied to a drying apparatus including a tumbling cylinder into which is injected heated air from a ceramic tube heat exchanger fed by a co-generation gas turbine. The gas turbine is used to generate electric power for motors in the apparatus and generates a flow of highly heated air which is passed over the ceramic tubes to heat air drawn into the tumbling cylinder for drying of the crop material.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: August 5, 1997
    Inventor: Rene Besnard
  • Patent number: 5588222
    Abstract: In a process for drying material in a drying system, a first current of heated gas is supplied to a first dryer from a corresponding first combustion chamber. Material to be dried is exposed to the first current in the first dryer. The dried material is separated from the first current of heated gas. The first current of heated gas is split into a first stream of heated gas and a second stream of heated gas after the dried material has been separated. The first stream is introduced into the first combustion chamber so that the gas generated in the first combustion chamber and the first stream are combined to constitute the first current of heated gas. At least a portion of the second stream is introduced into the second combustion chamber. A second current of heated gas is supplied to a second dryer from the second combustion chamber. The portion of the second stream introduced into the second combustion chamber constitutes a portion of the second current.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: December 31, 1996
    Assignee: Beloit Technologies, Inc.
    Inventor: Stanley P. Thompson
  • Patent number: 5555636
    Abstract: A dryer has a hopper for material to be dried and an inlet line for supplying dry air to the hopper. A heating device for heating the dry air to the desired drying temperature before introduction into the hopper is provided. A return line is connected to the hopper for removing moist air from the hopper which results from the dry air passing through the material in the hopper and absorbing moisture therefrom. The return line has a part that functions as a heat exchanger. The dry air before entering the hopper is guided through the heat exchanger.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: September 17, 1996
    Assignee: Motan Holding GmbH
    Inventors: Walter Kramer, Holger Kuhnau
  • Patent number: 5483754
    Abstract: The invention relates to the heat treatment of continuously moving length of textile material in a treatment apparatus with at least two successive treatment zones by means of hot gas. After it has been heated, all of the exhaust gas from the first treatment zone is introduced into the second treatment zone as fresh gas. An exhaust gas branch stream drawn off at the end of the second treatment zone is afterburned. The exhaust gas branch stream which has been heated in this way first of all preheats the second exhaust gas branch stream coming from the second treatment zone, and before being discharged into the atmosphere the exhaust gas branch stream coming from the first treatment zone and the fresh air air heated. In this way extremely economic operation of the entire treatment apparatus is provided, with reliable purification and disposable of the exhaust gas.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: January 16, 1996
    Assignee: Bruckner Trockentechnik GmbH & Co.
    Inventor: Harry Gresens
  • Patent number: 5483755
    Abstract: A method and an apparatus are provided for drying material such as paddy grains, plastic particles, and the like, which has a plurality of grains. The method includes the steps of providing the grains in a first container, inputting heat into the first container so as to dry the grains therein, delivering the grains from the first container into a second container at a higher position above the first container, delivering the grains from the second container through a heating conduit device into a third container, and conveying air having a temperature lower than that of the third container into the third container so as to refrigerate the grains and remove the moisture therefrom.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: January 16, 1996
    Inventor: Peng-Ta Yang
  • Patent number: 5430956
    Abstract: A process and a device for evacuating a drying room filled with one or more evaporable fluids or one or more non-evaporable fluids or mixtures thereof. The device includes a turbo engine, a liquid seal pump and a condensor. The pressure of the fluids or mixture of fluids is raised by the turbo engine, the resulting volume flow is reduced by condensation in the condensor, and the resulting reduced volume flow is pumped off with the pump.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: July 11, 1995
    Assignee: SEMTEC Muller OHG
    Inventor: Wilhelm Lange