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Class Information
Number: 203/DIG.4
Name: Distillation: processes, separatory > Heat pump
Description:










Patents under this class:
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Patent Number Title Of Patent Date Issued
8361277 Evaporator and method of operation thereof Jan. 29, 2013
8323457 Dividing wall column with a heat pump Dec. 4, 2012
8282791 Desalination using low-grade thermal energy Oct. 9, 2012
8273220 Heat pump distillation Sep. 25, 2012
8182654 Heat pump for high purity bottom product May. 22, 2012
8080138 Desalination using low-grade thermal energy Dec. 20, 2011
7981254 Heat pump system, operation procedure therefor and evaporator system Jul. 19, 2011
7981256 Splitter with multi-stage heat pump compressor and inter-reboiler Jul. 19, 2011
7811420 Isothermal gas-free water distillation Oct. 12, 2010
6846390 Methods for using hydrophobic liquid to compress steam Jan. 25, 2005
6605190 Staged optimal externally-controlled systems and method thereof Aug. 12, 2003
6383341 Apparatus for obtaining pure water from crude water May. 7, 2002
6375805 Apparatus and process for purifying a liquid Apr. 23, 2002
6258215 System and a rotary vacuum distiller for water recovery from aqueous solutions, preferably from urine aboard spacecraft Jul. 10, 2001
6010599 Compact vacuum distillation device Jan. 4, 2000
5964986 Distillation plant Oct. 12, 1999
5935388 Distillation plant with a heat pump Aug. 10, 1999
5770019 Apparatus for concentrating waste liquid Jun. 23, 1998
5729987 Desalinization method and apparatus Mar. 24, 1998
5695614 Method for processing waste liquids in particular industrial waste water having a high solids content Dec. 9, 1997
5647961 Refrigerant decontamination and separation system Jul. 15, 1997
5630913 Water distillation system May. 20, 1997
5609733 System and method for converting toxic washwater to distilled water Mar. 11, 1997
5512142 Process and device for purifying organically polluted waste water Apr. 30, 1996
5512141 Distillation apparatus Apr. 30, 1996
5439560 Low pressure evaporation concentrating apparatus for a photographic process waste disposl Aug. 8, 1995
5386075 Process for separating ethylbenzene and styrene by distillation Jan. 31, 1995
5314586 Purifying and energy-saving water fountain capable of supplying icy, warm and hot distilled water May. 24, 1994
5294303 Method for removing dissolved immiscible organics from am aqueous medium at ambient temperatures Mar. 15, 1994
5290403 Liquid evaporating apparatus Mar. 1, 1994
5252187 Method of recovering solvent from mother liquor containing non-volatile matters by heat pump system Oct. 12, 1993
5227027 High efficiency water distillation apparatus using a heat pump system and process for use thereof Jul. 13, 1993
5171407 Distillation plant for producing hydrogen peroxide Dec. 15, 1992
5171455 Method and apparatus for separation of toxic contaminants by nebulization Dec. 15, 1992
5124004 Distillation process for ethanol Jun. 23, 1992
5108548 Low pressure distillation apparatus Apr. 28, 1992
4985122 Vacuum distillation apparatus and method with pretreatment Jan. 15, 1991
4961826 Distillation process for ethanol Oct. 9, 1990
4915792 Process for separating a volatile component from a mixture Apr. 10, 1990
4880504 Vacumm distillation system with spiralled cold coil Nov. 14, 1989
4846240 High cop absorption heat pumped evaporation method and apparatus Jul. 11, 1989
4842748 Methods for removing volatile substances from water using flash vaporization Jun. 27, 1989
4830711 Installation for separating a solvent from a mixture of solvent and hydrocarbons May. 16, 1989
4822455 Distilling and desalination apparatus Apr. 18, 1989
4778535 Vapor generating and recovery apparatus and process Oct. 18, 1988
4778567 Method for purification of ethylene oxide and recovery of heat thereof Oct. 18, 1988
4773968 N-butane/isobutane fractionation Sep. 27, 1988
4770748 Vacuum distillation system Sep. 13, 1988
4769112 Method for removing water from ethanol Sep. 6, 1988
4755261 Vapor generating and recovery method for vapor retention and reuse Jul. 5, 1988

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