INORGANICALLY MODIFIED MOLECULAR SIEVE, PREPARATION METHOD THEREFOR AND USE THEREOF

Title:

INORGANICALLY MODIFIED MOLECULAR SIEVE, PREPARATION METHOD THEREFOR AND USE THEREOF

Document Type and Number:

WIPO Patent Application WO/2021/088389

Kind Code:

A1

Abstract:

Disclosed is a method for preparing an inorganically modified molecular sieve. The method comprises impregnating a molecular sieve using an inorganic solution, performing solid-liquid separation, and drying a solid to obtain a modified molecular sieve. The prepared modified molecular sieve can be used as a selective adsorbent of an N2/CH4, O2/CH4 or (N2+O2)/CH4 system, and used to purify CH4 from coal bed gas, oil field gas or biogas.

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Inventors:

LUO SHIZHONG (CN)
WANG RONG (CN)
SHEN JUN (CN)
JING FANGLI (CN)
ZHOU HUI (CN)
BA YUDE (CN)
LI ZHIMIN (CN)
LI XINYI (CN)
ZHOU YIMIN (CN)

Application Number:

PCT/CN2020/099720

Publication Date:

May 14, 2021

Filing Date:

July 01, 2020

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Assignee:

UNIV SICHUAN (CN)

International Classes:

B01J20/16; B01D53/02; B01J20/20; B01J20/30

Foreign References:

CN110773120A	2020-02-11
CN110773121A	2020-02-11
CN102219235A	2011-10-19
CN109433257A	2019-03-08
CN101723792A	2010-06-09
CN106006639A	2016-10-12

Other References:

LIU DINGDING, YI HONGHONG, TANG XIAOLONG, ZHAO SHUNZHENG, WANG ZHIXIANG, GAO FENGYU, LI QIAN, ZHAO BIN: "Adsorption Separation of CO 2 /CH 4 Gas Mixture on Carbon Molecular Sieves Modified by Potassium Carbonate", JOURNAL OF CHEMICAL AND ENGINEERING DATA., AMERICAN CHEMICAL SOCIETY., US, vol. 61, no. 7, 14 July 2016 (2016-07-14), US, pages 2197 - 2201, XP055810059, ISSN: 0021-9568, DOI: 10.1021/acs.jced.5b00742
JIN SHU-MING, LIU XIU-WU, WANG GUI-XIANG, WANG LIANG: "The clinoptilolite modified by different ion-exchange to separation N2/CH4 mixture gas", JOURNAL OF HEBEI UNIVERSITY OF TECHNOLOGY, vol. 41, no. 2, 1 April 2012 (2012-04-01), pages 32 - 35, XP055810062, DOI: 10.14081/j.cnki.hgdxb.2012.02.009

Attorney, Agent or Firm:

SISUN INTELLECTUAL PROPERTY AGENT CO., LTD (CN)

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