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Title:
PURIFICATION OF HIGH TEMPERATURE REDUCTIVE GAS
Document Type and Number:
Japanese Patent JPH01254226
Kind Code:
A
Abstract:

PURPOSE: To recover α-type gypsum semi-hydrate efficiently, by adsorbing and removing sulfur compounds in a high temperature reductive gas, reproducing the absorbent with an O2-contg. gas, and reacting the resulting SO2-contg. reproduced gas with a slurry contg. Ca compound in a reaction container.

CONSTITUTION: A high temperature reductive gas 1 contg. sulfur compounds such as H2S, COS, etc., is introduced into a reaction chamber 6 and the sulfur compounds are adsorbed by an adsorbent 5 such as iron oxide, etc., and removed, resulting a purified gas 4 production. Meantime, an O2-contg. gas is introduced into each reaction chamber 8, 9 to reproduce the adsorbent 5, and the resulting reproduced gases contg. SO2 12, 14 are mixed each other to give a gas mixture 16 which is fed to a reaction chamber 26 through a heat- exchanger 17 and here reacted with a slurry of CaCO3, Ca(OH)2 at 120W160°C to obtain α-type gypsum semi-hydrate and it is recovered by a solid-liquid separator 30.


Inventors:
SUEHIRO MITSUGI
SETO TORU
MITSUOKA SHIGEAKI
INOUE KENJI
Application Number:
JP1988000082189
Publication Date:
October 11, 1989
Filing Date:
April 05, 1988
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B01D53/48; B01D53/04; B01D53/14; B01D53/34; B01D53/52; B01J20/34; C01F11/46; C10K1/20; C10K1/26; (IPC1-7): B01D53/04; B01D53/14; B01D53/34; B01J20/34; C01F11/46; C10K1/20; C10K1/26