H Sub 2 S Removal Processes For Low Btu Coal Gas

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

DOWNLOAD NOW!

Download or read book H[sub]2[/sub] Removal from Coal Gas at Mid Temperature written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In certain coal gasification processes, the capability to scrub H/sub 2/S from coal gas at quench/particulate scrubbing temperatures, typically 150/sup 0/C to 200/sup 0/C, would substantially reduce gas cleanup equipment costs, complexity, and condensate handling requirements. Candidate absorbents have been identified and evaluated. This paper discusses those absorbents and their performance under realistic operating conditions with simulated coal gas. The benefits of mid-temperature H/sub 2/S scrubbing are summarized as follows: up to 60% reduction in cleanup system capital cost and components; substantially reduced process and controls complexity; opportunity for scrubbing of sulfur compounds and NH/sub 3/ in the same location; and elimination of the need for condensate handling and recycle, and potential emissions resulting from these operations. Based on the results obtained thus far and its relative advantages over other process, the direct oxidation process using stable inorganic catalysts appears to be most promising. The process is simple, requires low chemicals cost and has potential for simultaneous removal of H/sub 2/S and NH/sub 3/. The process requires further investigation to optimize the operating parameters under actual process condition.