公开(公告)号：DE2855232A1

公开(公告)日：1979-06-28

申请号：DE2855232

申请日：1978-12-21

Applicant: UNION CARBIDE CORP

Inventor： MCMULLEN CHARLES HENRY ,  NELSON JAMES RUSSELL ,  REAM BERNARD CLAUDE ,  SIMS JUN JOSEPH ALTON

IPC: C07D317/36 ,  C07D317/38 ,  C07D319/06

Abstract: A process for making alkylene carbonate by the reaction of carbon dioxide and an alkylene oxide of the formula wherein R, R1, R2 and R3 are one or more of hydrogen, alkyl, aryl, alkaryl, aralkyl, cycloalkyl, allyloxy, chloroalkyl, and aryloxy to produce the corresponding carbonate, which comprises: (a) providing a homogeneous liquid phase reaction zone in which the predominant material therein is the alkylene carbonate; (b) providing a catalytic amount of an alkylene oxide carbonation catalyst to said liquid phase; (c) having dissolved in said liquid phase sufficient CO2 to provide a molal amount therein which exceeds the molal amount of the catalyst; (d) providing a CO2 pressure in the reaction zone of between about 150 psig and about 750 psig; (e) maintaining a sufficient amount of the alkylene oxide in the reaction to maintain the pressure and temperature thereof; (f) maintaining the reaction zone at a temperature at which the alkylene oxide and CO2 react to form alkylene carbonate, which temperature is not greater than about 200 DEG C.; and (g) correlating the reaction zone temperature and pressure to yield an alkylene carbonate efficiency of at least about 99% and a conversion of at least 99.5%.

公开(公告)号：DE3887806D1

公开(公告)日：1994-03-24

申请号：DE3887806

申请日：1988-09-28

Applicant: UNION CARBIDE CORP

Inventor： NELSON JAMES RUSSELL

IPC: C07C201/02 ,  B01D3/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/04 ,  C07C203/00 ,  C07C203/02 ,  C07C203/04

Abstract: A process and reaction vessel for producing alkyl nitrite is disclosed, the process comprising (a) contacting nitric oxide ¸& lower alcohol and oxygen in a reaction zone such that alkyl nitrite is formed, said reaction zone comprising a reactor section and a rectification section, (b) supplying a liquid scrubbing agent to an upper portion of the rectification section, (c) withdrawing a gaseous alkyl nitrite product stream from the upper portion of the rectification section, and (d) withdrawing a liquid stream from a lower portion of the reactor section. The reactor section provides intimate vapor-liquid contact sufficient to enhance the conversion of nitric oxide to alkyl nitrite and the rectification section provides sufficient vapor residence time to enhance conversion of oxygen, as well as sufficient rectification capabilities to reduce the amounts of water and nitric acid in the gaseous alkyl nitrite product stream.

公开(公告)号：DE3461636D1

公开(公告)日：1987-01-22

申请号：DE3461636

申请日：1984-03-29

Applicant: UNION CARBIDE CORP

Inventor： EWBANK RODGER MAURICE ,  NELSON JAMES RUSSELL

IPC: C07C327/58 ,  B01J19/24 ,  B01J31/00 ,  C07C67/00 ,  C07C313/00 ,  C07C153/00