Class 203/21 - AND RECOVERING HEAT BY INDIRECT HEAT EXCHANGE

Subclass of Class 203 - Distillation: processes, separatory
Definition: Processes directed to recovering waste heat by indirect
No. of patents: 38
Last issue date: 04/01/2008

Number	Title	Issue Date
7350471	Combustion system with recirculation of flue gas An improved combustion method and corresponding apparatus is disclosed, where the method includes oxidizing a fuel in a combustion chamber with an oxidizing stream including an air stream and a first recycled flue gas stream and mixing a produced hot flue gas stream...	04/01/2008
7320745	Energy efficient method for exothermic reactions An energy efficient process scheme for a highly exothermic reaction-distillation system in which the reactor is external to the distillation column and the feed to the reactor is a mixture of at least one liquid product stream from the distillation column with or wi...	01/22/2008
7263858	Method and apparatus for producing a purified liquid The present invention provides generally a method and apparatus for purifying a liquid. More particularly, purification of a bulk liquid is performed by introducing a liquid stream to a purification vessel, which comprises both a distillation chamber for forming a p...	09/04/2007
7205430	Production of di- and polyisocyanates of the diphenylmethane series with defined acidity The invention relates to a process for the production of di- and polyisocyanates of the diphenylmethane series and mixtures thereof, in which aniline and formaldehyde are reacted in the presence of an acid catalyst to form di- and polyamines of the diphenylmethane s...	04/17/2007
7197876	System and apparatus for power system utilizing wide temperature range heat sources A new method, system and apparatus for power system utilizing wide temperature range heat sources and a multi-component working fluid is disclosed including a heat recovery vapor generator (HRVG) subsystem, a multi-stage energy conversion or turbine (T) subsystem an...	04/03/2007
7041260	Integral compact heat exchanger and catalytic reactor for scavenging contaminants from air A fluid treatment system incorporating an integrated heat exchanger and thermal treatment unit. A fan draws or pushes a contaminated fluid through the heat exchanger, which is preferably of the counter flow type. The integrated heat exchanger and thermal treatment u...	05/09/2006
7038002	Production of mixtures of diisocyanates and polyisocyanates from the diphenylmethane series with high contents of 4,4′-methylenediphenyl diisocyanate and 2,4′-methylenediphenyl diisocyanate A fraction of diisocyanates of the diphenylmethane series containing at least 95 wt. % binuclear methylenediphenyl diisocyanate is obtained by a) reacting aniline and formaldehyde in the presence of an acid catalyst to produce diamines and polyamines of...	05/02/2006
6939444	Sulfur-bearing residue treatment system A sulfur-bearing residue treatment system is provided for the recovery of valuable organic components and the reduction of capital costs and operating costs. The treatment system involves the use of a stripping vessel in conjunction with a heating apparatus. All ele...	09/06/2005
6334935	Distillation of (meth) acryloxy-bearing alkoxysilane A (meth)acryloxy-bearing alkoxysilane is isolated and purified to a high purity by distilling a reaction solution containing the (meth)acryloxy-bearing alkoxysilane in a thin-layer distillation device at a temperature of 90-160° C. and a vacuum of 1-15 m...	01/01/2002
6071383	Distillator A distillator has an outer casing, a boiling device disposed in the outer casing, a hot water box disposed in the outer casing, a cold water box disposed in the outer casing, a first faucet disposed on the hot water box, a second faucet disposed on the co...	06/06/2000
5600049	Process for depropanizing benzene In the alkylation of benzene with propylene in a distillation column reactor to produce cumene the overheads from the distillation reactor are fed to a depropanizer where the unreacted benzene is separated from C3 's. Liquid propylene feed for ...	02/04/1997
5306397	Process and apparatus for the extraction of fresh water from warm seawater The apparatus is located almost completely under the surface of the sea. The vacua in the de-aeration and the evaporation chambers are generated by a vacuum pump and are maintained by the effects of a pressure reduction device at the inlet for warm seawat...	04/26/1994
5217581	Desalination of sea water near the critical pressure A distillation system where a saline fluid (10) is pumped into a pressure vessel (14), through a counterflow heat exchanger (16) and heated to boiling. A salt free distillate (20) is separated from the saline fluid (10). The concentrate valve (24) and the...	06/08/1993
5205906	Process for the catalytic treatment of wastewater A process is presented for the treatment of wastewater containing non-volatile pollutants and volatile chemically oxidizable organic and inorganic pollutants. The process combines efficient evaporation to concentrate the non-volatile compounds and a catal...	04/27/1993
5131984	High quality phenol rectification with energy recovery The process for rectification of phenol prepared from crude phenol being the product of decomposition of cumene hydroperoxide and having previously been distilled to remove large portions of acetone, cumene and alpha methylstyrene which includes: feeding ...	07/21/1992
5076895	Process and apparatus for recovering clean water and solids from aqueous solids using mechanical vapor recompression evaporators Process and apparatus for recovering clean water and solids from aqueous solids are disclosed. Aqueous solids are mixed with a low viscosity, relatively volatile, water-immiscible light fluidizing oil to obtain a mixture which will remain fluid and pumpab...	12/31/1991
4985122	Vacuum distillation apparatus and method with pretreatment Method and apparatus for separating volatile contaminants from a liquid to be continuously distilled. A continuous still comprises evaporator (1) having a heating coil (2), and condensor coil (6), and distillate collector (5). An entrainment device (11) r...	01/15/1991
4978547	Process for producing low-alcohol wine A process for producing low alcoholic wine includes the following steps: evaporating alcohol-containing wine in a vacuum evaporator so that a first mixture comprising water, alcohol and flavoring substance is separated from a second mixture having a low-a...	12/18/1990
4918243	Heat integration process A portion of the best of vaporization, required to separate and recover methanol from wash water used to remove methanol from a C4 raffinate resulting from the reaction of isobutene containing C4 hydrocarbons and methanol to produce ...	04/17/1990
4746610	Efficient use of thermal energy from an internal combustion engine in ethanol production An ethanol-producing plant and a method is provided for producing ethanol from sugars, starches, or cellulose. Some ethanol-producing plants consume more thermal energy than they produce. The present invention solves the efficiency problem by utilizing an...	05/24/1988
4690733	Process for the separation of hydrocarbons from a mixed feedstock In a combination solvent extraction-steam distillation process for the recovery of aromatic hydrocarbons, the improvement comprising (a) introducing high pressure steam into a steam ejector; (b) passing the steam from step (a) to a first heat exchanger where it ...	09/01/1987
4639293	Partially evacuated solar still This invention relates to a solar still wherein the evaporation takes place in partially evacuated tubings which are heated by sunlight. The water to be distilled is supplied from a reservoir vessel which is sealed off after batch loading. The reservoir v...	01/27/1987
4615769	Process for distillation of styrenes The present invention provides a process for distillation of styrenes which can be stably operated without loss of energy saving effect, by leading a part or all of low boiling point component vapor from the top to a compressor to use as a heat source for...	10/07/1986
4595460	Method and apparatus for water distillation with energy recovery A liquid distillation apparatus provides recirculating flow of unevaporated liquid and recovery of energy from the liquid circulation. Liquid columns in communication with each other are provided differing liquid levels to enhance circulation of the liqui...	06/17/1986
4556456	Multi-vapor level vapor generating and recovery apparatus An apparatus for generating at least two vapor zones, one above the other, by vaporizing a fluid mixture having at least two compounds therein having different vaporizing temperatures. The apparatus includes a chamber with vaporizing means, and vapor cond...	12/03/1985
4555311	Integrated fractionation in the recovery of alkylaromatic hydrocarbons A method is disclosed for fractionating a hydrocarbon conversion zone effluent stream comprising at least three components which are to be isolated into separate streams. A two-column system for fractionating the effluent of a benzene alkylation zone is e...	11/26/1985
4555310	Method of utilizing energy of high pressure condensate A method of utilizing the energy of a high pressure condensate stream including passing steam at an elevated pressure in indirect heat exchange with a material to be heated, collecting a condensate product condensed from the steam of the heat exchange ste...	11/26/1985
4544777	Combination alkylation-etherification process In a combination alkylation-methyltertiary butyl ether (MTBE) operation, isobutane vapor side-draw and bottoms product yield from the alkylation fractionation, respectively, are used to indirectly heat the mid-section and reboil section of the methylterti...	10/01/1985
4414074	Process for the purification of 4,4'-diisocyanatodiphenylmethane by plural distillations A new process for the production of very pure 4,4'-diisocyanatodiphenylmethane is disclosed, in which diisocyanatodiphenylmethane isomers which are obtained by distillation from the phosgenation products of aniline/formaldehyde condensates are initia...	11/08/1983
4406748	Liquid purification system A liquid purification system, method and apparatus includes a plurality of operationally interconnected chambers. A supply or inlet chamber is held at about atmospheric temperature while other chambers of the system are held at a partial vacuum. The liqui...	09/27/1983
4405409	Method and apparatus for dehydrating mixtures of organic liquids and water A method and apparatus for dehydrating mixtures of organic liquids and water comprising consecutive distillation and membrane permeation, wherein at least a portion of the material retained by the separator is passed into indirect heat exchange relationsh...	09/20/1983
4350571	Absorption heat pump augmented thermal separation process The invention provides a process and apparatus for reducing the amount of energy which must be supplied to thermally activated separation processes such as fractional distillation, distillation, dehydration, or acid gas scrubbing. The reduction is accompl...	09/21/1982
4349416	Process and device for the separation of mixtures which form an azeotrope A process and apparatus for the separation of components from a mixture which forms an azeotrope is disclosed by subjecting the mixture to extractive distillation to remove one of the components and regeneration to separate another component from the extr...	09/14/1982
4341599	Heating apparatus Apparatus usable to heat fluid comprises: (a) a steam vessel having an inlet for water and an outlet for steam, (b) heating means associated with the vessel to heat water received therein and produce steam, and (c) a condenser connected with the vessel outlet to re...	07/27/1982
4314891	Process for reconcentrating moist glycol Reconcentration of moist glycol, which has been used to dry natural gas, by heating the moist glycol with flue gas from a reboiler and by thereafter stripping water from the moist glycol with the dried flue gas or with a hydrocarbon gas by-product of the ...	02/09/1982
4273620	Process for reconcentrating moist glycol Reconcentration of moist glycol, which has been used to dry natural gas, by heating the moist glycol with flue gas from a reboiler and by thereafter stripping water from the moist glycol with the dried flue gas or with a hydrocarbon gas by-product of the ...	06/16/1981
4267022	Energy efficient process and apparatus for desalinizing water Method and apparatus for desalinizing water. Salt water in an evaporation zone is provided with heat of vaporization by a heat pump which transfers heat to the water from a thermal sink. The evaporation zone is maintained at subatmospheric pressure so tha...	05/12/1981
4265712	Water purification system A water purification system for use in combination with a domestic hot water heating tank. The system includes a water container for containing water separate from the water in the tank. A conduit carries hot water from the tank to the container, passing ...	05/05/1981

PatentStorm

Quotables

PatentStorm News

Class 203/21 - AND RECOVERING HEAT BY INDIRECT HEAT EXCHANGE