Simultaneous removal of H{sub 2}S and NH{sub 3} in coal gasification processes. Quarterly report, 1996
The objective of this study is to develop advanced high- temperature coal gas desulfurization mixed-metal oxide sorbents with stable ammonia decomposition materials at 550-800{degrees}C (1022- 1472{degrees}F). The specific objectives of the project are to: (i) Develop a combined sorbent-catalyst materials which shall be capable of removing hydrogen sulfide to less than 20 ppmv and ammonia by at least 90 percent. (ii) Carry out comparative fixed-bed Studies of absorption and regeneration with various formulations of sorbent- catalyst systems and select most promising sorbent-catalyst type. (iii) Conduct long-term (at least 30 cycles) durability and chemical reactivity in the fixed-bed with the superior sorbent-catalyst. Under Task 3, cyclic testing, HART-51 sorbent-catalyst was tested and found to have excellent catalytic activity for ammonia decomposition up to 180 - 200 min. The decline in activity after this time interval was mainly due to the poisoning of the catalyst by H{sub 2}S.
- Research Organization:
- Hampton Univ., VA (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- FG22-93MT93005
- OSTI ID:
- 436451
- Report Number(s):
- DOE/MT/93005--T7; ON: DE97050014
- Country of Publication:
- United States
- Language:
- English
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