Abrégé

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.

Classes IPC  ?

• B01J 8/06 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules immobiles, p. ex. dans des lits fixes dans des réacteurs tubulairesProcédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules immobiles, p. ex. dans des lits fixes les particules solides étant disposées dans des tubes
• C07C 41/03 - Préparation d'éthers à partir d'oxiranes par réaction d'un cycle oxirane avec un groupe hydroxyle
• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation
• B01J 14/00 - Procédés chimiques généraux faisant réagir des liquides avec des liquidesAppareillage spécialement adapté à cet effet
• B01J 19/00 - Procédés chimiques, physiques ou physico-chimiques en généralAppareils appropriés
• B01J 19/24 - Réacteurs fixes sans élément interne mobile
• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés

Abrégé

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.

Classes IPC  ?

• B01J 14/00 - Procédés chimiques généraux faisant réagir des liquides avec des liquidesAppareillage spécialement adapté à cet effet
• B01J 19/00 - Procédés chimiques, physiques ou physico-chimiques en généralAppareils appropriés
• B01J 19/24 - Réacteurs fixes sans élément interne mobile
• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation
• C07C 41/03 - Préparation d'éthers à partir d'oxiranes par réaction d'un cycle oxirane avec un groupe hydroxyle
• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés

Abrégé

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.

Classes IPC  ?

• C01B 7/19 - FluorAcide fluorhydrique
• C01B 25/238 - Impuretés cationiques
• C01B 33/10 - Composés contenant du silicium, du fluor et d'autres éléments

Abrégé

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.

Classes IPC  ?

• C07C 51/377 - Préparation d'acides carboxyliques, de leurs sels, halogénures ou anhydrides par des réactions ne créant pas de groupes carboxyle par élimination d'hydrogène ou de groupes fonctionnelsPréparation d'acides carboxyliques, de leurs sels, halogénures ou anhydrides par des réactions ne créant pas de groupes carboxyle par hydrogénolyse de groupes fonctionnels
• C07C 53/16 - Acides acétiques halogénés

Produits et 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.