METHOD FOR REUSING ZEOLITE ADSORBENT, AND REGENERATED ADSORBENT

Title:

METHOD FOR REUSING ZEOLITE ADSORBENT, AND REGENERATED ADSORBENT

Document Type and Number:

WIPO Patent Application WO/2020/067177

Kind Code:

A1

Abstract:

Provided is a method for reusing an adsorbent, with which a used adsorbent can be regenerated so as to exhibit a stable refinery capacity in order to keep the composition of a refined synthetic gas constant. This method for reusing a zeolite adsorbent, which is used to adsorb carbon dioxide gas from a synthetic gas containing carbon dioxide gas so as reduce the concentration of the carbon dioxide gas in the synthetic gas, comprises: a step for recovering a used zeolite adsorbent; a step for firing the used zeolite adsorbent at a temperature of 300-600°C in an oxygen atmosphere to produce a regenerated zeolite adsorbent; and a step for reusing the regenerated zeolite adsorbent.

Inventors:

NATSUYAMA KAZUTO (JP)
HAMACHI KOKORO (JP)

Application Number:

PCT/JP2019/037632

Publication Date:

April 02, 2020

Filing Date:

September 25, 2019

Export Citation:

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Assignee:

SEKISUI CHEMICAL CO LTD (JP)

International Classes:

B01J20/34; B01D53/047; B01J20/18; C01B3/56; C01B32/50; C12P7/02

Foreign References:

JPH08252419A	1996-10-01
JP2011001264A	2011-01-06
US20170159078A1	2017-06-08
US20060117952A1	2006-06-08
JPH06254395A	1994-09-13
JP2002177773A	2002-06-25
JPS5238498A	1977-03-25
JP2003511218A	2003-03-25
JPH02111621A	1990-04-24
JP2003246606A	2003-09-02
US20170260552A1	2017-09-14

Other References: