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Title:
COMPREHENSIVE UTILIZATION PROCESS FOR SELECTIVE CATALYTIC OXIDATIVE CONVERSION OF TAIL GAS FROM FISCHER-TROPSCH SYNTHESIS
Document Type and Number:
WIPO Patent Application WO/2018/032944
Kind Code:
A1
Abstract:
A comprehensive utilization process for selective catalytic oxidative conversion of a tail gas from Fischer-Tropsch synthesis. The process comprises: conditioning a raw gas for Fischer-Tropsch synthesis, feeding the raw gas into a Fischer-Tropsch synthesis reactor, then performing a Fischer-Tropsch synthesis reaction to obtain a liquid hydrocarbon product and a tail gas; feeding the tail gas into a gas separation device to separate and to extract hydrogen from the tail gas, collecting a portion of a separated tail gas obtained after hydrogen extraction for use as a recycled tail gas, transporting the recycled tail gas into a selective catalytic oxidative conversion reactor, allowing, under the effect of a catalyst, a light hydrocarbon in the recycled tail gas to undergo selective catalytic oxidation with an oxidizing agent, and be converted into hydrogen and carbon monoxide; and returning the hydrogen and carbon monoxide to mix with the raw gas for Fischer-Tropsch synthesis, and to enter the Fischer-Tropsch synthesis reactor again to produce a liquid hydrocarbon product. The process lowers the depth of raw gas conversion and the scale of conversion equipment, increases the utilization rate and carbon efficiency of Fischer-Tropsch synthesis raw material, and improves the economics of a Fischer-Tropsch system.

Inventors:
LI MENG (CN)
KUAI PINGYU (CN)
MA YONGMING (CN)
TIAN WENTANG (CN)
WANG DAXIANG (CN)
Application Number:
PCT/CN2017/094219
Publication Date:
February 22, 2018
Filing Date:
July 25, 2017
Export Citation:
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Assignee:
WUHAN KAIDI ENG TECH RES INST (CN)
International Classes:
C10G2/00; C01B3/38
Foreign References:
CN106221720A2016-12-14
CN101270297A2008-09-24
CN102703108A2012-10-03
CN102614763A2012-08-01
Attorney, Agent or Firm:
WUHAN KAIYUAN INTELLECTUAL PROPERTY AGENT LTD. (CN)
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