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Patent Searching and Data


Title:
MULTISTAGE MEMBRANE SEPARATION AND PURIFICATION PROCESS AND APPARATUS FOR SEPARATING HIGH PURITY METHANE GAS
Document Type and Number:
WIPO Patent Application WO/2016/043427
Kind Code:
A1
Abstract:
The present invention provides a method for separating high purity methane gas from biogas, the method comprising the steps of: compressing and cooling biogas (step 1); and separating carbon dioxide by introducing the biogas compressed and cooled in step 1 into a four-stage polymer separation membrane in which a residue stream from a first polymer separation membrane is connected to a second polymer separation membrane, a residue streams from the second polymer separation membrane is connected to a third polymer separation membrane, and a residue stream from the third polymer separation membrane is connected to a fourth polymer separation membrane (step 2).

Inventors:
KIM JEONG HOON (KR)
HAN SANG HOON (KR)
Application Number:
PCT/KR2015/007930
Publication Date:
March 24, 2016
Filing Date:
July 29, 2015
Export Citation:
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Assignee:
KOREA RES INST CHEM TECH (KR)
International Classes:
B01D53/22; B01D71/06
Foreign References:
KR101086798B12011-11-25
JP2014159543A2014-09-04
JPH09124514A1997-05-13
JPH09310082A1997-12-02
Attorney, Agent or Firm:
LEE, WON HEE (KR)
이원희 (KR)
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