Title:
ガンマーブチロラクトン、1,4―ブタンジオール及びテトラヒドロフランを製造する方法
Document Type and Number:
Japanese Patent JP4021490
Kind Code:
B2
Abstract:
PCT No. PCT/GB97/01286 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 12, 1997 PCT Pub. No. WO97/43234 PCT Pub. Date Nov. 20, 1997A process is described for the production of at least one C4 compound selected from butane-1,4-diol, gamma -butyrolactone and tetrahydrofuran, which includes the step of hydrogenation in the vapour phase of maleic anhydride in the presence of a heterogeneous hydrogenation catalyst, which process comprises: (a) contacting a vaporous stream containing maleic anhydride vapour, water vapour, and carbon oxides in an absorption zone with a high boiling organic solvent having a boiling point at atmospheric pressure which is at least about 30 DEG C. higher than that of maleic anhydride thereby to form a solution of maleic anhydride in the high boiling organic solvent; (b) recovering from the absorption zone a waste gas stream; (c) contacting the solution of maleic anhydride in the high boiling solvent with a gaseous stream containing hydrogen thereby to strip maleic anhydride therefrom and to form a vaporous stream comprising hydrogen and maleic anhydride; (d) contacting material of the vaporous stream of step (c) in a hydrogenation zone under hydrogenation conditions in the presence of a heterogeneous hydrogenation catalyst thereby to convert maleic anhydride to at least one C4 compound selected from butane-1,4-diol, gamma -butyrolactone and tetrahydrofuran; and (e) recovering from the hydrogenation zone a product stream containing said at least one C4 compound.
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Inventors:
Tuck, Michael, William, Marshall
Wood, michael, anthony
Hills, Andrew, George
Wood, michael, anthony
Hills, Andrew, George
Application Number:
JP54065097A
Publication Date:
December 12, 2007
Filing Date:
May 12, 1997
Export Citation:
Assignee:
BASF AKTIENGESELLSCHAFT
International Classes:
C07C29/149; B01J23/72; C07B61/00; C07C29/17; C07C31/20; C07D307/08; C07D307/33; C07D315/00
Domestic Patent References:
| JP57156425A | ||||
| JP2233632A |
Attorney, Agent or Firm:
Satoshi Furuya
Kaoru Furuya
Takahiko Mizobe
Kaoru Furuya
Takahiko Mizobe