Title:
PROCESS FOR COMMERCIAL-SCALE REFINING LIQUEFIED PETROLEUM GAS
Document Type and Number:
WIPO Patent Application WO/2003/042339
Kind Code:
A1
Abstract:
The present invention relates to a novel process for the commercial-scale refining the liquefied petroleum gas (LPG). The process comprises sequential fine desulfurization and mercaptan conversion of the LPG in the absence of alkali through desulfurizing agent and catalyst provided for in fixed bed reactor, during the fine desulfurizition, the resultant of reaction of hydrogen sulfide in the LPG with iron and calcium oxides or their hydrates is adsorbed on the desulfurizing agent, during the mercaptan conversion, the mercaptan in the LPG reacts with the residual micro-air in the LPG in the presence of the catalyst to produce the disulfides; flowing the disulfides along with the LPG stream out of the fixed bed reactor; rectifying the LPG stream to obtain the refined LPG, and further rectifying to obtain the valuable product of disulfide. The present process has advantages of high efficiency, nonalkali lye drainage, simplied process and nonpollution of environment.
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Inventors:
WU QING (CN)
LIU ZHENYI (CN)
LIU ZHENYI (CN)
Application Number:
PCT/CN2002/000806
Publication Date:
May 22, 2003
Filing Date:
November 12, 2002
Export Citation:
Assignee:
BEIJING SJ ENVIRONMENTAL PROT & NEW MATERIAL CO LTD (CN)
WU QING (CN)
LIU ZHENYI (CN)
WU QING (CN)
LIU ZHENYI (CN)
International Classes:
C10G29/16; C10L3/12; (IPC1-7): C10L3/12; C10G29/16
Foreign References:
| CN1229005A | 1999-09-22 | |||
| CN1194294A | 1998-09-30 | |||
| US5659106A | 1997-08-19 |
Attorney, Agent or Firm:
LUNG TIN INTERNATIONAL INTELLECTUAL PROPERTY AGENT LTD. (Tower B Grand Place, No.5 Hizhong Roa, Chaoyang District Beijing 1, CN)
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