With Regeneration Or Removal Of Treating Agent Patents (Class 34/330)
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Patent number: 11118146Abstract: A unitary laundry detergent article that is completely or substantially water-soluble, which contains two or more non-fibrous, surfactant-containing sheets with one or more discrete, surfactant-containing particles located between such sheets. The non-fibrous sheets contain a first surfactant that is relatively less hydrophilic, while the discrete particles contain a second surfactant that is relatively more hydrophilic.Type: GrantFiled: September 20, 2018Date of Patent: September 14, 2021Assignee: The Procter & Gamble CompanyInventors: Hongsing Tan, Mark Robert Sivik, Frank William Denome, Carl David MacNamara
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Patent number: 10753628Abstract: Roof drying processes and associated systems. A representative process includes drawing moisture-laden air from within the internal structure of a roof via a vacuum blower, a extraction insert and an extraction manifold, and removing moisture from the moisture-laden air via a dehumidifier. The dry air can be directed back into the roof through an injection insert and an injection manifold.Type: GrantFiled: September 8, 2017Date of Patent: August 25, 2020Assignee: LEGEND BRANDS, INC.Inventors: Brandon Burton, William Bruders, Brett Bartholmey
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Patent number: 10704792Abstract: Provided is an adsorptive hybrid desiccant cooling system, including a desiccant cooler comprising a housing including a regeneration passage and a dehumidification passage, a desiccant rotor mounted on a partition wall dividing the regeneration passage and the dehumidification passage from each other, a regeneration preheater installed upstream of the desiccant rotor in the dehumidification passage, and a cooler installed downstream of the desiccant rotor in the dehumidification passage; and an adsorptive cooler comprising an adsorber including a first sub-adsorber and a second sub-adsorber configured to adsorb a refrigerant at an adsorption temperature and desorb the refrigerant at a regeneration temperature, a condenser configured to condense the refrigerant, and an evaporator configured to evaporate the refrigerant, wherein the adsorber is connected to each of the external heat source and the regeneration preheater, and the regeneration preheater is heated by adsorption heat generated in the adsorber.Type: GrantFiled: December 14, 2017Date of Patent: July 7, 2020Assignee: Korea Institute of Science and TechnologyInventor: Dae Young Lee
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Patent number: 9790161Abstract: A process for the production of organic acids having at least three carbon atoms comprises the steps of forming an amount of carbon monoxide and reacting the amount of carbon monoxide with an amount of an unsaturated hydrocarbon. The reaction is preferably carried out in the presence of a supported palladium catalyst, a strong acid, and a phosphine. In some embodiments, the unsaturated hydrocarbon is one of acetylene and methylacetylene, and the organic acid is one of acrylic acid and methyl acrylic acid. The reacting step is preferably performed with carbon monoxide produced from carbon dioxide.Type: GrantFiled: November 20, 2015Date of Patent: October 17, 2017Inventors: Richard I. Masel, Zheng Richard Ni, Qingmei Chen, Brian A. Rosen
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Publication number: 20140345153Abstract: The present invention relates to a method for moisture determination and control using real time measurement of the moisture content of the material being processed. The present invention also provides a device that is used for moisture determination and control based on real time measurement of moisture content of a material being processed. The present invention is particularly suitable for controlling the moisture content of a material in a drying process, such as in a drying hopper, where the material moisture content is measured at an inlet and an outlet of the drying process. The drying process is further controlled by anticipating the drying load by measuring the moisture content of the incoming material to be dried.Type: ApplicationFiled: December 19, 2012Publication date: November 27, 2014Inventors: Deepak Pahwa, William Charles Griffiths, Marco Sammartini, Rajan Sachdev, Kuldeep Singh Malik
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Patent number: 8844156Abstract: A method of operating a clothes dryer having a rotating drum defining a drying chamber without a liquid drain, an air system, a heating system, a treating chemistry dispensing system, and a controller, where a purge detection routine and purge cycle are executed to purge the treating chemistry from clothes dryer without draining.Type: GrantFiled: December 14, 2010Date of Patent: September 30, 2014Assignee: Whirlpool CorporationInventors: Kaustav Ghosh, Thomas A. Latack, Robert J. Pinkowski
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Patent number: 8832962Abstract: 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: GrantFiled: November 19, 2010Date of Patent: September 16, 2014Assignee: DegremontInventor: Pierre Emmanuel Pardo
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Patent number: 8486201Abstract: Disclosed is a method for drying a plate-like article; the method including rinsing with an aqueous rinsing liquid with subsequent rinsing with an organic solvent, wherein the organic solvent has a water content of below 20 mass-% wherein the organic solvent is supplied at a solvent temperature, which is at least 30° C. and not higher than 60° C.Type: GrantFiled: July 1, 2010Date of Patent: July 16, 2013Assignee: Lam Research AGInventor: Aurelia Plihon
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Publication number: 20130152420Abstract: A device comprising an alumino-phosphate with thermal management for the more efficient drying of objects and appliances. Also, a drying method for obtaining dried objects and appliances, as well as a method for regeneration accompanied by the desorption of water from water-containing alumino-phosphate.Type: ApplicationFiled: June 10, 2011Publication date: June 20, 2013Applicant: Sued-Chemie IP GmbH & Co. KGInventors: Arno Tissler, Silke Sauerbeck, Rolf Kurzhals
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Patent number: 8187655Abstract: The present invention relates to a method of dehydrating pieces of intact plant or animal tissue, said pieces containing at least 30 wt. % of water, the method comprising (i) contacting the pieces of intact tissue with a pressurized gas to reduce the water content of the pieces by at least 50%, said pressurized gas having a pressure of at least 0.5×Pc and a temperature of at least Tc?60° C., Pc representing the critical pressure of the gas and Tc representing the critical temperature of the gas, and (ii) separating the pressurized gas from the dehydrated pieces, wherein at least 80 wt. %, preferably at least 90 wt. % of the matter removed by the gas from the pieces of intact plant or animal tissue is water. The invention also provides a method of dehydrating a material containing at least 30 wt.Type: GrantFiled: June 16, 2005Date of Patent: May 29, 2012Assignee: Feyecon Development & Implementation B.V.Inventors: Wilhelmus G. M. Agterof, Rajni Bhatia, Gerard W. Hofland
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Patent number: 7537700Abstract: A method and a system for removing water from high water content solid such as high water content coal, which enables dewatering with small energy consumption. A liquefied material which is a gas at 25° C. under 1 atm. (hereinafter referred to as material D) is contacted with a solid containing water to allow the liquefied material D to dissolve the water contained in the solid, and to produce a liquefied material D having a high water content and simultaneously remove the water from the solid, and by vaporizing the material D in the liquefied material having a high water content, to thereby separate the water from the resulting gaseous material D, recovering the separated gaseous material D, and liquefying the recovered gaseous material by pressurizing, cooling or a combination thereof, to reuse the resulting liquefied material for removing water from a solid containing water.Type: GrantFiled: June 3, 2003Date of Patent: May 26, 2009Assignee: Central Research Institute of Electric Power IndustryInventors: Hideki Kanda, Hiromi Shirai
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Patent number: 7121016Abstract: A vehicle air system has an air dryer which is periodically regenerated by reverse flow of dry air. The regeneration threshold is variable, and determined according to the operating state of the vehicle. The operating state is in turn determined from easily measurable vehicle status parameters, preferably in the form of on/off or in/out signals.Type: GrantFiled: July 19, 2002Date of Patent: October 17, 2006Assignee: Wabco Automotive UK LimitedInventors: Richard Burn, Ignitius Milomo, Andrew George Livingston Blackwood
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Patent number: 7103991Abstract: A method of initiating a regeneration event of an air braking system of a vehicle includes the steps of calculating the forward air volume in successive time intervals, tallying the total forward air volume and initiating a regeneration event at a saturation threshold of the dessicant material which may be varied in real time. The method also comprises calculating a reverse air volume, and ceasing a regeneration event at a dryness threshold of the dessicant material.Type: GrantFiled: May 28, 2002Date of Patent: September 12, 2006Inventor: Daniel Moulding
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Patent number: 7000332Abstract: A gas drying apparatus is provided having at least two desiccant-containing towers which alternately receive moisture-saturated air from an inlet to be dried during a drying phase, and then receive dry air during a regeneration phase to regenerate the desiccant which had previously adsorbed moisture from saturated air during the drying phase. The apparatus diverts a portion of dry air flowing along one of two flow paths including a first flow path having a heater and a pulse purge regeneration control valve for selectively enabling delivery of heated dry air to the tower being regenerated, and a second flow path which bypasses the first flow path and includes a bypass valve for selectively permitting delivery of unheated dry air to the tower being generated so as to cool the desiccant therein. A temperature sensing arrangement is provided for monitoring and maintaining the internal temperature of heated dry air delivered into the tower being regenerated.Type: GrantFiled: April 6, 2005Date of Patent: February 21, 2006Assignee: Pneumatech, Inc.Inventors: Vincent P Fresch, Titus A. Mathews
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Patent number: 6986213Abstract: A method for drying a granular solid, the finely divided solid to be dried being mixed with zeolite granules, after which drying takes place by removal of water from the solid. The solid dried by removal of moisture is then separated from the zeolite. According to the invention, the solid to be dried is dried in a mixer without external supply of heat, after which the dried solid is at least virtually completely separated from the zeolite granules after a residence time in the mixer. This is advantageous in particular when drying foods, such as wheat flour.Type: GrantFiled: May 23, 2001Date of Patent: January 17, 2006Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNOInventors: Arjen Johannes Kruithof, Pieter Jan W. Blom, Paulus Statius R. Kosters, Paulus Josephus T. Bussmann
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Publication number: 20040237333Abstract: A housing assembly includes first and second sides and first and second panels spaced apart from each other by an interior of the housing and traversing the first and second sides. A first porous desiccant retention plate and a second porous desiccant retention plate are spaced from each other are secured within the housing so as to define a desiccant chamber therebetween for maintaining the desiccant medium. An opening is formed within one of said panels in a location corresponding to the location of the desiccant chamber, facilitating replacement of the desiccant medium within the desiccant chamber.Type: ApplicationFiled: July 1, 2004Publication date: December 2, 2004Inventors: Francis Gomes, Paul Thom, David Landsberger
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Patent number: 6772534Abstract: An apparatus for removing moisture from air which includes a moist air inlet area, a dry air outlet area, a regeneration air inlet area, a regeneration air outlet area and a desiccant medium. A drying fan is provided for drawing the moist air through the moist air inlet area, through the desiccant, as to exit the unit through the dry air outlet area. A regeneration fan is provided for drawing regeneration air through the regeneration air inlet area, through the desiccant medium, so as to exit the unit through the regeneration air outlet area.Type: GrantFiled: November 4, 2002Date of Patent: August 10, 2004Assignee: Bel-Art Products, Inc.Inventors: Francis Gomes, Paul Thom, David Landsberger
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Patent number: 6729039Abstract: A method and an apparatus for controlling airflow in a desiccant drying system having two desiccant beds (10, 12). A first diverter valve (14) communicates with each of the desiccant beds, a regeneration air inlet (22), and a press air outlet (20). A second diverter valve (16) communicates with each of the desiccant beds, a process air inlet (18), and a regeneration air outlet (28). First and second regeneration air control valves (24, 30) are also provided which during a cooling phase of the regeneration cycle admit a cooling bleed stream of process air to the desiccant bed being regenerated and then convey the cooling air bleed stream from the desiccant bed and through a heat exchanger (42) back to the process air inlet.Type: GrantFiled: July 21, 2003Date of Patent: May 4, 2004Assignee: Universal Dynamics, Inc.Inventor: Robert R. Crawford
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Patent number: 6729040Abstract: A dryer for drying a substrate includes: a bath containing a fluid; a chamber; and a delivery system supplying a polar organic compound, such as isopropyl alcohol, and a hydrophobic organic compound, such as hydrofluoroether, to the interface between the substrate and the fluid as the substrate is removed from the fluid of the bath into the chamber. The dryer further includes a chamber environment control system that supplies a gas into the chamber to dry the substrate and controls temperature and humidity in the chamber and a chamber heater attached to the chamber to transfer thermal energy into the chamber. A drying method includes: immersing a substrate into a fluid contained in a bath; removing the substrate from the fluid into a chamber; and supplying isopropyl alcohol and hydrofluoroether to an interface between the substrate and the fluid.Type: GrantFiled: March 9, 2001Date of Patent: May 4, 2004Assignee: Oliver Design, Inc.Inventor: Yassin Mehmandoust
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Publication number: 20040040172Abstract: A method and an apparatus for controlling airflow in a desiccant drying system having two desiccant beds (10, 12). A first diverter valve (14) communicates with each of the desiccant beds, a regeneration air inlet (22), and a process air outlet (20). A second diverter valve (16) communicates with each of the desiccant beds, a process air inlet (18), and a regeneration air outlet (28). First and second regeneration air control valves (24, 30) are also provided which during a cooling phase of the regeneration cycle admit a cooling bleed stream of process air to the desiccant bed being regenerated and then convey the cooling air bleed stream from the desiccant bed and through a heat exchanger (42) back to the process air inlet.Type: ApplicationFiled: July 21, 2003Publication date: March 4, 2004Inventor: Robert R Crawford
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Patent number: 6655042Abstract: A drying system for drying a semiconductor substrate is provided. The drying system includes: a chamber for housing a vapor distributor and a fluid bath, said fluid bath being disposed in a lower portion of the chamber and said distributor being disposed in an upper portion of the chamber for distributing vapor for drying the substrate; and a fluid flow system for supplying fluid flow into said fluid bath for cleaning and drying the substrate and for draining said fluid from the fluid bath, wherein the chamber includes a plurality of exhaust vents disposed at the upper portion for venting the vapor.Type: GrantFiled: January 29, 2002Date of Patent: December 2, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Hun-jung Yi, Ki-seok Lee, Bo-yong Lee, Sang-oh Park, Pil-kwon Jun, Sang-mun Chon, Kyung-dae Kim
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Publication number: 20030177659Abstract: Liquid for prevention of substrate drying is supplied into a processing chamber so that a pool of the liquid is created as an anti-drying atmosphere in advance inside a processing chamber, and substrates, as they are dipped in the pool, are kept on stand-by in a substrate board. In this manner, air drying of the substrates which are kept on stand-by is prevented. When the number of the substrates in the substrate board reaches a certain number, the anti-drying atmosphere is removed from the processing chamber, which is followed by introduction of an SCF into the processing chamber and supercritical drying (high pressure drying) of all of the plurality of substrates inside the processing chamber, namely, batch supercritical drying.Type: ApplicationFiled: March 4, 2003Publication date: September 25, 2003Applicant: Dainippon Screen Mfg. Co., Ltd.Inventors: Kimitsugu Saito, Yusuke Muraoka, Ryuji Kitakado, Takashi Miyake, Tomomi Iwata, Ikuo Mizobata
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Publication number: 20030172546Abstract: An apparatus for removing moisture from air which includes a moist air inlet area, a dry air outlet area, a regeneration air inlet area, a regeneration air outlet area and a desiccant medium. A drying fan is provided for drawing the moist air through the moist air inlet area, through the desiccant, as to exit the unit through the dry air outlet area. A regeneration fan is provided for drawing regeneration air through the regeneration air inlet area, through the desiccant medium, so as to exit the unit through the regeneration air outlet area.Type: ApplicationFiled: November 4, 2002Publication date: September 18, 2003Applicant: Bel-Art Products, Inc.Inventors: Francis Gomes, Paul Thom, David Landsberger
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Patent number: 6601315Abstract: A combined fluidized bed dryer and absorption bed allows an absorbant to be dried to remove any moisture therefrom immediately followed by treating a product material with the dried absorbant, all in the same vessel, such that the absorbant is at its optimum dryness prior to treating the product material therewith The invention has particular application in the ophthalmic lens production where the absorbant is alumina and is used to remove methacrylic acid from liquid monomer prior to using the monomer in producing lenses.Type: GrantFiled: December 14, 2000Date of Patent: August 5, 2003Assignee: Bausch & Lomb IncorporatedInventor: Ulick Stafford
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Patent number: 6578285Abstract: A device for absorbing or blotting grease from the surface of foods such as pizza comprising a support member having a handle for manually gripping the device and an absorbent or oligiophilic pad attached to such support member for blotting the surface of a food item.Type: GrantFiled: June 14, 2001Date of Patent: June 17, 2003Inventor: Brian G. Turtzo
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Patent number: 6571489Abstract: For a single chamber air drier in a compressed air system on a vehicle the volume of dry regeneration air required to regenerate a desiccant in the air drier has to be determined. This can be accomplished in that data regarding system pressure, outdoor temperature and supplied air volume are continuously provided to a compute, which in relation to these parameters controls the supply of regeneration air to the air drier.Type: GrantFiled: September 24, 2001Date of Patent: June 3, 2003Assignee: Haldex Brake Products ABInventors: Sven-Olof Larsson, Mats-Örjan Pogen
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Patent number: 6560897Abstract: Improved spray drying apparati, and methods of use thereof, have been developed. The spray drying equipment includes a primary drying chamber and a secondary drying apparatus which includes tubing having a length sufficient to increase the contact time between the drying gas and the droplets/particles to dry the particles to the extent desired, at a drying rate and temperature which would be too low to provide adequate drying without the secondary drying apparatus. The secondary drying apparatus increases the drying efficiency of the spray dryer system without increasing the drying rate, while minimizing loss in yield. Te secondary drying apparatus can include multiple secondary apparati, which are independently controlled for temperature and/or have different dimensions (cross-sectional areas and/or lengths), to allow for optimization of drying conditions.Type: GrantFiled: October 26, 2001Date of Patent: May 13, 2003Assignee: Acusphere, Inc.Inventors: Donald E. Chickering, III, Mark J. Keegan, Greg Randall, Howard Bernstein, Julie Straub
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Publication number: 20030056392Abstract: A highly moisture-sensitive element and method of making such element includes an encapsulation enclosure encapsulating all of the highly moisture-sensitive electronic devices on a substrate and a sealing material positioned between the substrate and the encapsulation enclosure to form a complete seal between the substrate and the encapsulation enclosure around each highly moisture-sensitive electronic device or around groups of highly moisture-sensitive electronic devices, wherein the substrate or encapsulation enclosure, or both, contain vent holes and vent hole seal material or wherein the seal material contains gaps prior to spacing the substrate and the encapsulation enclosure within a predetermined range and the gaps are filled in by spreading the sealing material.Type: ApplicationFiled: May 17, 2002Publication date: March 27, 2003Inventors: Michael L. Boroson, John Schmittendorf, Peter G. Bessey, Jeffrey P. Serbicki
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Publication number: 20020112366Abstract: For a single chamber air drier (SD) in a compressed air system on a vehicle the volume of dry regeneration air required to regenerate a desiccant in the air drier has to be determined. This can be accomplished in that data regarding system pressure (p), outdoor temperature (T) and supplied air volume are continuously provided to a computer (ECU), which in relation to these parameters controls the supply of regeneration air to the air drier.Type: ApplicationFiled: September 24, 2001Publication date: August 22, 2002Inventors: Sven-Olof Larsson, Mats-Orjan Pogen
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Patent number: 6401353Abstract: A substrate dryer causing no water mark on a substrate having a refined·complicated structure and capable of suppressing increase of a cost required for a drying treatment is provided. Drying gas of low-molecular silicone generated in a drying gas generation part is heated by a heater and thereafter supplied from a drying gas supply nozzle. The drying gas is supplied to the main surface of a substrate being pulled up from de-ionized water stored in a cleaning bath as a stream. Silicone contained in the drying gas is condensed on the surface of the substrate, substitutes for moisture, and thereafter vaporizes. Silicone is excellent in permeability·dryability, and hence can suppress formation of a water mark also on a substrate having a refined·complicated structure. Further, silicone applies no load to the environment, and hence increase of a cost required for the drying treatment can be suppressed without requiring specific treatment for disposal.Type: GrantFiled: March 7, 2001Date of Patent: June 11, 2002Assignee: Dainippon Screen Mfg. Co., Ltd.Inventor: Masahiro Kimura
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Patent number: 6308434Abstract: Improved spray drying methods of have been developed. The spray drying method includes use of a primary drying chamber and a secondary drying apparatus which includes tubing having a length sufficient to increase the contact time between the drying gas and the droplets/particles to dry the particles to the extent desired, at a drying rate and temperature which would be too low to provide adequate drying without the secondary drying apparatus. The secondary drying apparatus increases the drying efficiency of the spray dryer system without increasing the drying rate, while minimizing loss in yield. The ratio of the length of tubing to the length of the primary drying chamber is at least 2:1. The tubing diameter is substantially smaller than the diameter of the primary drying chamber, such that the particles move at higher velocity through the tubing to minimize product losses.Type: GrantFiled: January 9, 2001Date of Patent: October 30, 2001Assignee: Acusphere, Inc.Inventors: Donald E. Chickering, III, Mark J. Keegan, Greg Randall, Howard Bernstein, Julie Straub
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Patent number: 6148599Abstract: A process and apparatus for gasifying high moisture content carbonaceous material by introducing a solid first carbonaceous material (1) into at least one pressurized drier vessel (2), the first carbonaceous material having a moisture content above about 30 wt % wet basis. The moisture content of the first carbonaceous material is reduced by passing a hot flue gas having a low oxygen content through the pressurized drier vessels. Then the dried first carbonaceous material is transferred from the drier vessels to a pressurized carbonizer vessel (10). The dried material is partially gasified in the carbonizer vessel to produce a high temperature fuel gas (18) and a solid residual material (16). The solid residual material is transferred to a pressurized combustion chamber (4) to produce the low oxygen content flue gas for the pressurized drier vessels.Type: GrantFiled: July 13, 1998Date of Patent: November 21, 2000Assignee: Generation Technology Research Pty. Ltd.Inventors: Malcolm J McIntosh, Sankar Bhattacharya
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Patent number: 5987776Abstract: This invention is an improved continuous process for drying and solvent extraction of water-wet solids without experiencing sticky solids comprising the steps of (1) mixing the input water-wet with solvent, (2) feeding said mixture into two or more stages of evaporation in parallel or in series to evaporate some of the water present in the input solids or sludges and to extract some of the indigenous solvent-soluble compounds from the solids, (3) feeding the slurry from the parallel or serial stages of evaporation in series to one or two final evaporation stages operated at pressures above atmospheric at preferably between pressures of 18 psia and 150 psia and more preferably between pressures of 18 psia and 50 psia, (4) feeding the slurry from the final stages of evaporation to a centrifuge or other device for separating most of the solvent from the solids, (5) subjecting the water-wet solids to none, one, or multiple extraction stages before, during, or after the evaporation stages, (6) at times, feeding thType: GrantFiled: October 10, 1997Date of Patent: November 23, 1999Assignee: American Biotheim Company LLCInventors: Thomas C. Holcombe, Theodore D. Trowbridge
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Patent number: 5815946Abstract: A process is described whereby wet coal may be dehydrated and inhibited against rehydration by immersing in a bath of molten paraffin hydrocarbon for a sufficient period of time to evaporate and expel inherent water from the coal. The hydrocarbon then inhibits any rehydration period. It is also an embodiment of this invention to describe a process whereby the water expelled may be recovered for useful purposes.Type: GrantFiled: September 10, 1996Date of Patent: October 6, 1998Inventor: Miles W. Dean
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Patent number: 5709037Abstract: A material to be dried, such as a semiconductor substrate during manufacturing a semiconductor device, is loaded into a process chamber fitted at a loading opening with a lid which is closed from above. The inner side wall surface of the process chamber has a first surface formed in the lower part thereof and is substantially in parallel with the inner wall surface of the lid, and a second surface extending from the upper end part of the first surface and bent outwards to face the inner wall surface of the lid. A processing solution vapor is fed through a steam supply port in the second surface into the process chamber and flowed downwardly over the material to be dried. The processing solution vapor is condensed and recovered below the material to be dried.Type: GrantFiled: October 7, 1996Date of Patent: January 20, 1998Assignees: Mitsubishi Denki Kabushiki Kaisha, Ryoden Semiconductor System Engineering CorporationInventors: Hiroshi Tanaka, Nobuaki Doi, Masashi Omori, Hiroaki Ishikawa
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Patent number: 5687591Abstract: Articles especially adapted for in-home dry cleaning comprise a carrier in spherical or polyhedral form which is impregnated with a cleaning composition. Multiple articles are placed together with soiled garments in a sealed bag and tumbled, preferably in a hot air clothes dryer, to clean and refresh the garments.Type: GrantFiled: October 17, 1995Date of Patent: November 18, 1997Assignee: The Procter & Gamble CompanyInventors: Michael Peter Siklosi, Thomas Allen DesMarais