PRE-TREATMENT METHOD, CARBON DIOXIDE COLLECTION METHOD, AND DEVICE FOR EXECUTING THESE METHODS

WIPO Patent Application WO/2023/188520

A1

This pre-treatment device is provided with a dehumidification tower capable of removing moisture from exhaust gas. The dehumidification tower has a moisture adsorbent capable of adsorbing moisture, an acidic gas adsorbent capable of adsorbing acidic gas, and a dehumidification container in which the moisture adsorbent and the acidic gas adsorbent are loaded. The moisture adsorbent is loaded in a position closer to a second port side, from which the exhaust gas can flow out, than the acidic gas adsorbent in the dehumidification container. The moisture adsorbent is an adsorbent which contains alumina. The acidic gas adsorbent is an adsorbent which contains silica but does not contain alumina, or an adsorbent which contains silica and alumina at an (Si/Al) molar ratio of greater than 2.5.

WO/2009/065218	METHOD FOR INHIBITING AMINE DEGRADATION DURING CO2 CAPTURE FROM A GAS STREAM
JP6280475	A carbon dioxide separation recovery subsystem and an operation control method for the same

TOMONAGA NARIYUKI (JP)
ITO YOSHIAKI (JP)
ANKEI NAOKI (JP)

PCT/JP2022/042487

October 05, 2023

November 16, 2022

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MITSUBISHI HEAVY IND LTD (JP)

B01D53/62; B01D53/04; B01D53/26; B01D53/40; B01D53/82; C01B32/50

JP2007308600A	2007-11-29
JP2017018917A	2017-01-26
JPH08117541A	1996-05-14

MATSUNUMA Yasushi et al. (JP)

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