Bench-scale testing of high-temperature desulfurization sorbents

✍ Scribed by Gangwal, S. K. ;Harkins, S. M. ;Woods, M. C. ;Jain, S. C. ;Bossart, S. J.

• Book ID: 102834126
• Publisher: American Institute of Chemical Engineers
• Year: 1989
• Tongue: English
• Weight: 530 KB
• Volume: 8
• Category: Article
• ISSN: 0278-4491
• DOI: 10.1002/ep.3300080421

✦ Synopsis

Extrudutes of regenerable mixed-metal oxide sorbents including zinc ferrite, copper-modijied zinc ferrite, and zinc titanate were prepared and tested for their potential to remove hydrogen sulfide (H2S) from coal gasifier gas in a high-temperature high-pressure (HTHP) jixed-bed reactor. Reductions in H2S concentration from >10,000 parts per million b y volume (ppmv) to < I to 50 ppmv were achieved depending on sorbent, reactor temperature, and steam concentration. Zinc ferrite showed no apparent loss in capacity over

15 sulfidution-regeneration cycles, but underwent signijicant strength reduction at 5% steam due to soot formation. Zinc titanate exhibited excellent strength and capacity retention at 5% steam and temperatures up to 735°C.