Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 3 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
Patents for B01D 3 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping (21,025)
10/1991
10/29/1991US5061349 Method of isolating trioxane from aqueous trioxane solutions by distillative separation
10/29/1991US5061348 Waste piranha from semiconductor processing
10/29/1991CA1291417C Tower packing element with embossed surfaces
10/23/1991EP0453084A1 Lower alkylene oxide purification
10/23/1991EP0452359A1 Water distilling method and apparatus
10/22/1991US5059288 Recovery of isopropyl acetate and ethanol from an isopropyl acetate, ethanol and water-containing stream
10/22/1991US5059287 Home use
10/22/1991CA1291161C Preparation of anhydrous alkanesulfonic acid
10/17/1991WO1991015430A1 Extraction of total, natural, biological sea salt by complete evaporation of seawater, with simultaneous production of salt-free water
10/17/1991DE4011877A1 Heat pump procedure for distn. and drying - has semiconductor heat pump to evaporate and condense liq. in system which requires little maintenance and can be operated by solar power
10/16/1991EP0452093A1 Polymer melt distributor
10/16/1991EP0451721A1 Process for cleaning objects and apparatus therefor
10/16/1991EP0451602A1 Continuous process for upgrading polymer solutions for a requested specification of residual solvents
10/16/1991EP0451394A1 Mtbe preparation from isobutylene/tba and methanol in presence of an acid resin catalyst
10/16/1991CN1055300A Multistage flash and rectification coupling technology
10/15/1991US5057468 Catalytic distillation structure
10/15/1991US5057190 Stripping column installation for separating materials with high boiling point difference
10/13/1991CA2040308A1 Polymer melt distributor
10/09/1991CN1055171A Extractive distillation
10/09/1991CN1055124A Method for separation of oil from water and oil purification equipment
10/08/1991US5055627 Reacting excess benzene with propylene in distillation column reactor containing fixed bed molecular sieve acidic catalyst; transalkylating polyalkylated benzenes
10/08/1991CA2039809A1 Continuous process for concentrating polymer solutions up to a required specification level of residual solvents
10/02/1991EP0448884A1 Structure and method for catalytically reacting fluid streams in mass transfer apparatus
10/02/1991EP0237524B1 A process for the production of ethanol
10/01/1991US5053563 Method to concentrate and purify alcohol
10/01/1991US5053111 Method and apparatus for the batch distillation of water
10/01/1991US5053110 Solar water distillation system
10/01/1991CA2033478A1 Structure and method for catalytically reacting fluid streams in mass transfer apparatus
09/1991
09/28/1991WO1991014667A1 Extractive distillation
09/28/1991CA2078438A1 Extractive distillation
09/25/1991EP0447943A1 Process for cryogenic air separation
09/24/1991US5051214 Double-deck distributor and method of liquid distribution
09/24/1991US5051152 Passing a prepolymer through a wiped film evaporation zone, passing nitrogen in a countercurrent flow
09/24/1991CA1289459C Distributor for distributing liquid in an exchange column
09/22/1991WO1991014655A1 Process for the treatment of an aqueous solution containing mainly nitric and hydrofluoric acids
09/21/1991CA2038186A1 Process for cryogenic air separation
09/20/1991CA2012563A1 Volatile liquid recovery process
09/17/1991US5049319 Distillation tray
09/17/1991US5049241 Extractive distillation
09/17/1991US5049240 Vaccum distillation system
09/11/1991EP0445966A1 Control of fractional distillation process
09/10/1991US5047580 Process for the separation of sulfuric acid from aqueous mixtures of paraffin-sulfonic acids
09/10/1991US5047179 Distillation tray
09/10/1991US5047125 Fractionating column control apparatus and methods
09/10/1991US5047124 Apparatus for feeding gas into a saline solution
09/10/1991US5047123 Apparatus for clarifying liquids
09/05/1991WO1991012865A1 High efficiency distributor for gas-liquid contact column and method of preparation and use
09/04/1991EP0444141A1 Dry cleaning solvent filtration and recovery system
09/03/1991US5045156 Purification
09/03/1991CA1288377C Extraction process and apparatus
09/02/1991CA2034894A1 High efficiency distributor for gas-liquid contact column and method of preparation and use
08/1991
08/29/1991CA2037177A1 Water degasification and distillation apparatus
08/29/1991CA2036856A1 Method for control of a distillation process
08/28/1991EP0443499A1 Non-welded support plate or bed limiter for packed towers and method of making same
08/27/1991US5043506 Process for the alkylation of organic aromtic compounds in the presence of inert aliphatic compounds
08/27/1991US5043061 Evaporation and emanation type wastewater treating apparatus
08/21/1991CA2035742A1 Non-welded support plate or bed limiter for packed towers and method of making same
08/20/1991CA1287794C Apparatus for effecting gas-liquid contact
08/14/1991EP0441194A2 Apparatus for obtaining treated liquid in form of a condensate from an untreated liquid
08/14/1991EP0441058A2 Catalyst system for distillation reactor
08/14/1991CN1013480B Structured tower packing
08/13/1991CA1287593C Process for the further processing of the vacuum distillation residue in a crude oil refinery
08/08/1991WO1991011238A1 Vacuum distillation using suction apparatus
08/08/1991WO1991011237A1 Thermal processes for evaporating, condensing and absorbing and combination of said processes
08/08/1991WO1991007877A3 Method for extracting cholesterol from an animal fat
08/08/1991DE4102111A1 Fluid distributor baffles for mass and/or heat exchangers - comprising meshed basins incorporating capillary tubes. - by introducing water contg. ammonium, and air, then mixed with fresh ammonia
08/07/1991EP0440412A1 Vapor horn
08/07/1991EP0439731A1 Process for the thermal separation of a water/oil-emulsion
08/07/1991CA2033460A1 Catalyst system for distillation reactor
08/06/1991US5036672 Process and apparatus for air fractionation by rectification
08/03/1991CA2021876A1 Method for the thermal separation of liquid mixtures
07/1991
07/31/1991EP0438529A1 Removing hazardous contaminants from water.
07/31/1991EP0424460A4 Heterogeneous isoparaffin/olefin alkylation process
07/31/1991EP0221146B1 Distillation cut point control
07/31/1991CN2081753U Column plate of guide float valve
07/30/1991US5036005 Alcohol recovery by continuous fermentation
07/30/1991US5035776 Low energy extractive distillation process for producing anhydrous ethanol
07/30/1991US5035775 Ultrapure hydrazine production
07/30/1991US5035774 Recovery of solvent from acetylene steel cylinders to make the cylinders disposable
07/24/1991EP0438278A1 Octane improvement process
07/24/1991EP0437749A2 Reduced alcohol spirits
07/24/1991EP0424445A4 Heterogeneous isoparaffin/olefin alkylation process
07/24/1991CN1053196A Double deck distributor
07/23/1991US5034103 Distillation column with a draw-off device
07/23/1991US5034102 Column for distillation of charge products having a tendency for two-phase formation in sump
07/23/1991US5034029 Apparatus for effecting gas-liquid contact
07/18/1991DE4001013A1 Descending wall film in gas-liq. stripper drops - from connecting flanges to increase liq. surface engaged by rising gas
07/17/1991CN2080863U Energy-saving distillator
07/17/1991CA2025978A1 Reduced alcohol spirits
07/16/1991US5032232 Extractive distillation of hydrocarbon mixtures
07/16/1991US5032231 Vacuum distillation process
07/16/1991US5032218 Purification, distillation, condensation
07/11/1991WO1991009659A1 Water distillation apparatus
07/11/1991DE4000440A1 Monitoring distn. in closed system - by relative wt. changes measured for two system sections
07/09/1991US5030327 Quiescent liquid, rising gas bubble stream, boiling, channeling bubble stream, heat exchanging, condensation
07/03/1991EP0434959A2 Process for simultaneously obtaining purified benzene and purified toluene
07/03/1991EP0434826A1 Method and apparatus for introducing a liquid feed into a vapor/liquid separation tower.
06/1991
06/29/1991WO1991009832A1 Process for continuously producing aromatic carbonate
06/27/1991WO1991008812A1 Process and device for separating solvents and oils
06/26/1991EP0434510A1 Arrangement for mass distribution and heat and mass transfer for a column, especially with packings and column with such an arrangement
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