| Patents for B01D 3 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping (21,025) |
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| 04/29/1999 | DE19826682A1 Evaporation of fluids in hygroscopic electrical insulation material |
| 04/28/1999 | EP0910466A1 Methods and devices for oxidizing a hydrocarbon to form an acid |
| 04/28/1999 | EP0910445A1 Fluid-distributor for a substance-exchange column |
| 04/28/1999 | CN1043127C Hyperboloid hole upside down cone platform hood screen plate tower board |
| 04/27/1999 | US5897749 Continous withdrawal, superheating, and returning to still a portion of liquid distillation mixture in order to supply some or all of energy needed for distillation; polymerization inhibition |
| 04/27/1999 | US5897748 Distillative separation of mixtures and apparatus for this purpose |
| 04/22/1999 | WO1999019110A2 Apparatus and method for tray valve attachment |
| 04/22/1999 | WO1999019054A1 Method and apparatus for fluid contact |
| 04/22/1999 | WO1999011346B1 Method for distilling a mixture containing a plurality of components and apparatus for realising the same |
| 04/22/1999 | WO1999003554A9 Venturi swirl tube for vapor liquid contact tray |
| 04/22/1999 | DE19747209C1 Inter-floor liquid dispenser for a rectification column |
| 04/22/1999 | CA2274693A1 Apparatus and method for tray valve attachment |
| 04/21/1999 | EP0909204A1 Catalytic distillation process |
| 04/21/1999 | EP0673352B1 Process and reactor system for oligomerization of olefins |
| 04/21/1999 | EP0643680B1 Process for preparing methyl and ethyl ethers |
| 04/21/1999 | CN2314840Y Novel catalytic rectifying tower |
| 04/21/1999 | CN1043039C Process for concentrating urea solution under vacuum |
| 04/20/1999 | US5895822 Process for purifying acrylonitrile |
| 04/20/1999 | US5895608 Downcomer for chemical process tower and method of forming the same |
| 04/20/1999 | CA2184701C General parts washer |
| 04/15/1999 | WO1999018056A1 Method for carrying out heterogeneous catalysis |
| 04/15/1999 | WO1999017870A1 Process for producing liquid and, optionally, gaseous products from gaseous reactants |
| 04/14/1999 | EP0907629A1 Method for the preparation of dialkyl ethers |
| 04/14/1999 | EP0907399A1 Reactor distribution apparatus and quench zone mixing apparatus |
| 04/14/1999 | EP0907393A1 Column and process for deodorising dispersions |
| 04/14/1999 | EP0907392A1 Water treatment device and method |
| 04/14/1999 | EP0842241A4 Improved process for selective hydrogenation of highly unsaturated compounds and isomerization of olefins in hydrocarbon streams |
| 04/14/1999 | CN2313653Y Gas-liquid contact controller |
| 04/13/1999 | US5894076 Treating light naptha to remove unsaturated materials then alkylating benzene to produce ethylbenzene or cumene |
| 04/13/1999 | US5893271 Vapor degreaser refrigeration system |
| 04/13/1999 | CA2132320C Process and apparatus for preparing tertiary alkyl ethers |
| 04/08/1999 | WO1999016714A1 Process for desalination of saline water, especially sea water, having increased product yield and quality |
| 04/08/1999 | WO1999016542A1 Microchannel laminated mass exchanger and method of making |
| 04/07/1999 | EP0906902A2 A method for the production of an alkylamino (meth)acrylate and apparatus therefor. |
| 04/07/1999 | EP0696268B1 Ethylene glycol recovery process |
| 04/07/1999 | CN1212950A Method and apparatus for concentrating salt-containing solutions |
| 04/07/1999 | CN1042800C Angle double-acting float valve tray |
| 04/01/1999 | WO1999015463A1 Apparatus for obtaining pure water from crude water |
| 04/01/1999 | WO1999015462A1 Method and device for sewage clarification |
| 03/31/1999 | EP0905276A2 Apparatus for vaporizing and supplying a material |
| 03/31/1999 | EP0904818A1 Method for determining operating status of liquid phase-gas-phase interaction columns |
| 03/31/1999 | EP0703821B1 Catalytic distillation structure |
| 03/31/1999 | CN1212172A Process for separating azeotrope of methanol and dimethyl carbonate |
| 03/30/1999 | US5888460 Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 03/30/1999 | US5888355 Hydrogenation, isomerization catalyst |
| 03/30/1999 | CA2176379C Non-welded support plate member |
| 03/30/1999 | CA2144221C Modified scoop and oxidation system |
| 03/30/1999 | CA2100189C Packing element |
| 03/26/1999 | CA2243050A1 Method for determining operating status of liquid phase gas-phase interaction columns |
| 03/25/1999 | WO1999014179A1 Methods and reactor devices for removing catalyst after oxidation of hydrocarbons |
| 03/25/1999 | WO1999014178A1 Methods of recycling catalyst in oxidations of hydrocarbons |
| 03/25/1999 | DE19741806A1 Purifying hot waste water containing a high organic or inorganic load of impurities by evaporation and compressing vapor |
| 03/25/1999 | CA2304121A1 Methods of recycling catalyst in oxidations of hydrocarbons |
| 03/25/1999 | CA2304025A1 Methods and reactor devices for removing catalyst after oxidation of hydrocarbons |
| 03/24/1999 | CN1211459A Column tray with uniformly distributed retention period of liquid |
| 03/23/1999 | US5887117 Flash evaporator |
| 03/23/1999 | US5885488 Column for counter-currently contacting gas and liquid |
| 03/23/1999 | US5885422 Countercurrent solvent extraction of spent caustic to remove conjugated diene impurities followed by in situ steam distillation to remove residual solvent; by-product inhibition, antifouling agents |
| 03/23/1999 | US5885313 Temperature-gradient type multistage condenser |
| 03/23/1999 | US5884658 Liquid distributor for a packed tower |
| 03/23/1999 | CA2152337C Regeneration of hydrogen fluoride alkylation catalyst |
| 03/18/1999 | WO1999013278A1 Refrigerant reclamation system |
| 03/18/1999 | WO1999012621A1 Downcomers for vapor-liquid contact trays |
| 03/18/1999 | WO1998058090A3 A method and a device for recovering metals comprising dissolving, concentrating and electrowinning means with rotatable cathode |
| 03/18/1999 | DE19739987A1 New spirits still comprises collection of vapours rising from below |
| 03/18/1999 | DE19739985A1 New spirits still linked to repeaters with horizontal heating plates |
| 03/18/1999 | CA2300960A1 Downcomers for vapor-liquid contact trays |
| 03/17/1999 | EP0901481A1 Purification of glycidyl esters by thin film evaporation |
| 03/17/1999 | CN2310609Y Float valve tray with wings |
| 03/17/1999 | CN1042496C Liquid dispensor used for material and/or heat exchange tower |
| 03/16/1999 | US5882486 Hazardously contaminated triethylene glycol is refined by vacuum distillation |
| 03/16/1999 | US5882485 Extractive distillation |
| 03/16/1999 | CA2129917C Distillation column utilizing structured packing having varying crimp angle |
| 03/11/1999 | WO1999011347A1 Downcomers for vapor-liquid contact trays |
| 03/11/1999 | WO1999011346A1 Method for distilling a mixture containing a plurality of components and apparatus for realising the same |
| 03/11/1999 | CA2302468A1 Downcomers for vapor-liquid contact trays |
| 03/10/1999 | EP0900583A2 Evaporator to concentrate liquids |
| 03/10/1999 | EP0900582A1 Method for removal of residual organic solvents from a crystalline bulk substance and use thereof in manufacturing pharmaceuticals |
| 03/10/1999 | EP0696267B1 AZEOTROPIC AND AZEOTROPE-LIKE COMPOSITIONS AND A PROCESS FOR SEPARATING HCl AND HALOCARBONS |
| 03/10/1999 | CN1210510A Process and system for alkylation of aromatic compounds |
| 03/10/1999 | CN1210509A Alkylation of benzene to form linear alkylbenzenes using fluorin e-containing mordenites |
| 03/10/1999 | CA2215045A1 Refrigerant reclamation system |
| 03/09/1999 | US5880297 Distillation and vacuum distillation to form thin film and improved heat and color stability |
| 03/09/1999 | US5879516 Kugelrohr or distillation apparatus |
| 03/09/1999 | CA2246814A1 Separation of inorganic salts from dimethyl sulfoxide |
| 03/04/1999 | DE19723566C1 Extraction of solvents from washwater |
| 03/04/1999 | DE19723565C1 Process to remove solvent from industrial process water |
| 03/03/1999 | EP0898489A1 Device for distributing liquid in substance exchange columns |
| 03/03/1999 | EP0592654B1 Device for evaporating preferably liquid substances, in particular reagents, or for preparing or analyzing sampled materials |
| 03/03/1999 | CN2309172Y Distilling tower |
| 03/02/1999 | US5877385 Process including extractive distillation and/or dehydrogenation to produce styrene from petroleum feedstock including ethyl-benzene/xylene mixtures |
| 03/02/1999 | US5877363 Process for concurrent selective hydrogenation of acetylenes and 1,2 butadine in hydrocarbon streams |
| 03/02/1999 | US5877356 Process for the continuous preparation of aqueous formaldehyde solutions |
| 03/02/1999 | US5876591 Process for the production of lube oil |
| 03/02/1999 | US5876570 Purification process for cyclic formals |
| 03/02/1999 | US5876567 Solvent recycling system |
| 02/25/1999 | WO1999008769A1 Method for reducing the formation of foam during the treatment of a dispersion or a liquid with water vapour |
| 02/25/1999 | DE19735739A1 Generation of foam in deodorizing column under vacuum |
| 02/24/1999 | EP0897735A1 Process and plant for the thermal separation of a water/oil emulsion |
| 02/24/1999 | CN2308428Y Float valve column plate with improved way of gas/liquid contact |