Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1991-06-20
1992-10-13
Russel, Jeffrey E.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423231, B01D 5334
Patent
active
051549000
ABSTRACT:
In a method for absorbing and removing sulfur compounds such as hydrogen sulfide and carbonyl sulfide present in a high-temperature reducing gas using an absorbent,
disclosed is a method for purifying a high-temperature reducing gas which is characterized in that: said method uses at least four towers of reactors filled with an absorbent and comprises four steps which are an absorption step for absorbing and removing sulfur compounds with an absorbent, a regeneration step for regenerating said absorbent using a gas containing oxygen, a cooling step after the regeneration step, and a reduction step for reducing said regenerated and cooled absorbent with a high-temperature reducing gas until the concentration of the reducing gas becomes uniform before and after passing through the absorbent; heat is continuously recovered from the high-temperature gas at the outlet of the regeneration reactor in said regeneration step; and the regeneration and absorption performance is thus stabilized.
Also disclosed is a method for purifying a high-temperature reducing gas which is characterized in that this method uses as least four towers filled with an absorbent as in the above method; and an additional preliminary regeneration step is provided besides the above four steps in order to make possible a smooth operation when switching to the regeneration step and the continuous recovery of sulfur.
REFERENCES:
patent: 1822293 (1931-09-01), Joseph
patent: 2747968 (1956-05-01), Pigache
patent: 4164544 (1979-08-01), Olsson et al.
patent: 4371507 (1983-02-01), Farha, Jr. et al.
patent: 4533529 (1985-08-01), Lee
Chemical Engineering Techniques, Lauer et al., Reinhold Publ. Corp. 1952, pp. 220-222.
Unit Processes and Principles of Chemical Engineering, Olsen, D. Van Nostrand Co., Inc. 1932, pp. 1-3.
Inoue Kenji
Kobayashi Makoto
Mitsuoka Shigeaki
Nakayama Toshio
Seto Toru
Central Research Institute of Electric Power Industry
Mitsubishi Jukogyo Kabushiki Kaisha
Russel Jeffrey E.
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