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1. WO2015137925 - ACRYLONITRILE REACTOR STARTUP PROCEDURE

Publication Number WO/2015/137925
Publication Date 17.09.2015
International Application No. PCT/US2014/023334
International Filing Date 11.03.2014
IPC
C07C 253/26 2006.1
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
253Preparation of carboxylic acid nitriles
24by ammoxidation of hydrocarbons or substituted hydrocarbons
26containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
C07C 255/08 2006.1
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
255Carboxylic acid nitriles
01having cyano groups bound to acyclic carbon atoms
06of an acyclic and unsaturated carbon skeleton
07Mononitriles
08Acrylonitrile; Methacrylonitrile
CPC
C07C 253/26
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
253Preparation of carboxylic acid nitriles
24by ammoxidation of hydrocarbons or substituted hydrocarbons
26containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
Y02P 20/52
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
20Technologies relating to chemical industry
50Improvements relating to the production of bulk chemicals
52using catalysts, e.g. selective catalysts
Applicants
  • INEOS EUROPE AG [CH]/[CH] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
  • MCDONEL, Timothy Robert [US]/[US] (US)
  • COUCH, Jay Robert [US]/[US] (US)
  • WAGNER, David Rudolph [US]/[US] (US)
  • WACHTENDORF, Paul Trigg [US]/[US] (US)
Inventors
  • MCDONEL, Timothy Robert
  • COUCH, Jay Robert
  • WAGNER, David Rudolph
  • WACHTENDORF, Paul Trigg
Agents
  • KRUEGER, James P.
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ACRYLONITRILE REACTOR STARTUP PROCEDURE
(FR) PROCÉDURE DE DÉMARRAGE D'UN RÉACTEUR D'ACRYLONITRILE
Abstract
(EN) Formation of explosive mixtures during start up of an acrylonitrile reactor is prevented by including ammonia in the gases charged into the reactor during catalyst preheating. In addition to generating heat, oxidation of this ammonia reduces the oxygen content of the gas inside the acrylonitrile reactor, as well as in the reactor effluent gas, thereby reducing the risk that explosive mixtures will form in this effluent gas.
(FR) Selon l'invention, la formation de mélanges explosifs lors du démarrage d'un réacteur d'acrylonitrile est évitée par incorporation d'ammoniac dans les gaz chargés dans le réacteur lors du préchauffage du catalyseur. Outre générer de la chaleur, l'oxydation de l'ammoniac réduit la teneur en oxygène du gaz à l'intérieur du réacteur d'acrylonitrile, ainsi que dans l'effluent gazeux du réacteur, réduisant ainsi le risque de formation de mélanges explosifs dans cet effluent gazeux.
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