Abstract

Disclosed is a process for continuously reacting liquid alkylene oxide with a liquid substance including an organic compound with active hydrogen atoms and a catalyst in a reactor.

IPC Classes  ?

• B01J 8/06 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds in tube reactorsChemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds the solid particles being arranged in tubes
• C07C 41/03 - Preparation of ethers from oxiranes by reaction of an oxirane ring with a hydroxy group
• B01J 4/00 - Feed devicesFeed or outlet control devices
• B01J 14/00 - Chemical processes in general for reacting liquids with liquidsApparatus specially adapted therefor
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
• B01J 19/24 - Stationary reactors without moving elements inside
• C08G 65/26 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds

Abstract

Disclosed is a process for continuously reacting liquid alkylene oxide with a liquid substance comprising an organic compound with active hydrogen atoms and a catalyst in a reactor, wherein (1) the alkylene oxide is split before entering the reaction space into a first and a second part and, optionally, further parts, (2) said first part of alkylene oxide enters the reaction space of said reactor at a first location, (3) the liquid organic substance is supplied to the interior of said reactor at a second location downstream of said first location, (4) the liquid alkylene oxide enters the reactor at said first location over the entire-cross sectional area of the reaction space or gap at said location, (5) said second and, optionally, further parts of alkylene oxide are split off at said first location and are channeled from said first location to a third location and, when further parts of alkylene oxide are split off, to further locations in the reaction space or gap, through a separate tube for each part of alkylene oxide which is inserted into the reaction space, extends from said first location to said third or said further location of the reactor space, respectively, (6) said third location and optional further locations are located downstream of said second location and have a distance from said second location and from each other in flow direction of the reactor charge, and (7) said second and optional further parts of liquid alkylene oxide enter the reaction space at said third location and said optional further locations and are intermingled with the liquid reaction mixture and react with it on its way downstream towards the end of the reactor and preferred apparatuses for carrying out said process.

IPC Classes  ?

• B01J 14/00 - Chemical processes in general for reacting liquids with liquidsApparatus specially adapted therefor
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
• B01J 19/24 - Stationary reactors without moving elements inside
• B01J 4/00 - Feed devicesFeed or outlet control devices
• C07C 41/03 - Preparation of ethers from oxiranes by reaction of an oxirane ring with a hydroxy group
• C08G 65/26 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds

Abstract

A process for reducing arsenic in an acidic liquid comprising arsenic in an oxidized form, wherein the liquid is subjected to electrolysis in a single step and in a single compartment electrolytic cell using pulsed current in the presence of a conduction salt. A reference electrode comprising an electrolyte bridge made of PTFE is also discussed.

IPC Classes  ?

• C01B 7/19 - FluorineHydrogen fluoride
• C01B 25/238 - Cationic impurities
• C01B 33/10 - Compounds containing silicon, fluorine, and other elements

Abstract

A process for the manufacture of substantially pure monochloroacetic acid from a liquid chloroacetic acid mixture comprising monochloroacetic acid and dichloroacetic acid, in particular in an amount of 2 to 40 percent by weight, wherein said mixture, further mixed with a suspended hydrogenation catalyst, is mixed with hydrogen gas and the resulting mixture is brought to reaction in a reactor, which is characterized in that the reactor is a loop reactor comprising a gas and liquid recirculation system coupled via an ejector mixing nozzle, in which reactor the gas and liquid are circulated in co-current flow, and the mixing intensity introduced to the liquid phase is at least 50 W/l of liquid phase.

IPC Classes  ?

• C07C 51/377 - Preparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groupsPreparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by hydrogenolysis of functional groups
• C07C 53/16 - Halogenated acetic acids

Goods & Services

Machines, apparatus and systems used in industries producing chemicals, speciality chemical products, pharmaceuticals, plastics, rubber and textiles, cosmetics and food products, including mixers, grinders, kneaders, granulators, centrifuges and reactors, transfer apparatus and equipment, included in this class, elevating apparatus and equipment, as well as parts and fittings for said machines, apparatus and systems, included in this class. Measuring, controlling and regulating apparatus and systems as well as parts and fittings, included in this class; dosage dispensers; computers and computer software (recorded programs). Drying, purifying, cooling, distilling and evaporating systems, including thin film evaporators; filter systems; systems and devices for use in thermal engineering and environmental technology.