VINYL ACETATE SYNTHESIS METHOD USING REACTION HEAT RELEASED DURING SYNTHESIS Russian patent published in 2011 - IPC C07C67/05 C07C69/15 

Abstract RU 2432350 C2

FIELD: chemistry.

SUBSTANCE: invention relates to an improved method of producing vinyl acetate via a gas-phase reaction between ethylene, acetic acid and oxygen with heterogeneous catalysis in continuous mode at pressure 1-30 bars and temperature 130-200°C while tapping reaction heat through heat exchange with water which converts the water into vapour at temperature 120-185°C and pressure 1-10 bars and then separating the gas stream containing the product, said stream mainly consisting of ethylene, vinyl acetate, acetic acid, water, carbon dioxide and other inert gases, and complete or partial return of ethylene into the process with circulation of recycle gas. The water vapour at temperature 120-185°C and pressure 1-10 bars formed during the gas phase reaction as a result of heat exchange is completely or partially compressed with increase of its pressure by at least 0.5 bars and then directed for further use in the vinyl acetate production apparatus.

EFFECT: method enables complete use of vapour formed during exothermic gas-phase reaction during synthesis of vinyl acetate and significantly reduces the volume of supplying heating vapour from external sources.

4 cl, 2 ex

Similar patents RU2432350C2

Title Year Author Number
0
  • Inostrantsy Valter Krёnig Vulf Shverdtel
  • Federativna Respublika Germanii
  • Inostranna Firma Farbenfabriken Bajer A. G.
  • Federativna Respublika Germanii
SU340157A1
METHOD OF PRODUCING VINYL ACETATE 2009
  • Rinne Bernd
  • Khess Shtefan
  • Khotoman Ali
  • Bajer Mikhaehl' J.
  • Nuber Bertol'D
RU2477268C1
RECUPERATING ETHYLENE AND VINYLACETATE FROM STREAM OF RESIDUAL GAS FORMED DURING SYNTHESIS OF COPOLYMER OF VINYL ESTER AND ETHYLENE 2006
  • Gjunal'Taj Mekhmet
  • Zelig Manfred
RU2415153C2
METHOD OF PREPARING UNSATURATED ESTERS OF CARBOXYLIC ACIDS 0
  • Gans Fenkholts
  • Gans Krekeler
  • Gyunter Rosher
  • Gans-Ioakhim Shmidt
  • Gejnts Shmitts
  • Fridrikh Vunder
SU583739A3
INTEGRATED METHOD FOR VINYL ACETATE PRODUCTION 2000
  • Tsajs Zabine
  • Dingerdissen Uve
  • Fritch Dzhon
RU2247709C2
METHOD FOR PREPARING VINYL ACETATE 1999
  • Kitchen Sajmon Dzhejms
  • Tomson Alasder Jan
  • Uill'Jams Brjus Lio
RU2223941C2
METHOD OF PRODUCING UNSATURATED CARBOXYLATES 2009
  • Vestermajer Kheribert
  • Vagner Jokhann
  • Dafinger Villibal'D
  • Kholl' Peter
RU2503653C2
JOINT METHOD FOR PRODUCING ACROLEIN AND 3-METHYLMERCAPTOPROPIONIC ALDEHYDE 2013
  • Tsakki Pablo
  • Finkeldaj Kaspar-Genrikh
  • Kerfer Martin
RU2643814C1
VINYLACETATE PRODUCTION PROCESS 1996
  • Borisova V.V.(Ru)
  • Germashev A.I.(Ru)
  • Granovskij Ehduard Alekseevich
  • Gudkovich Viktor Nikolaevich
  • Poloumov A.V.(Ru)
  • Il'Inskaja A.E.(Ru)
RU2119478C1
METHOD OF SYNTHESIS OF VINYL ACETATE 1997
  • Bristou Timoti Krispin
  • Kitchen Simon Dzhejms
  • N'Juton Dejvid
RU2192409C2

RU 2 432 350 C2

Authors

Mikhl' Kharal'D

Dates

2011-10-27Published

2006-10-30Filed