Elemental sulfur recovery from desulfurization sorbents in advanced power systems
- Morgantown Energy Technology Center, WV (United States)
- Research Triangle Institute, Research Triangle Park, NC (United States)
Regenerable metal oxide sorbents, such as zinc titanate, are being developed to efficiently remove hydrogen sulfide (H{sub 2}S) from coal gas in advanced power systems. Dilute air regeneration of the sorbents produces a tailgas containing a few percent sulfur dioxide (SO{sub 2}). Catalytic reduction of the SO{sub 2} to elemental sulfur with a coal gas slipstream using the Direct Sulfur Recovery Process (DSRP) is a leading first-generation technology. Currently the DSRP is undergoing field testing at gasifier sites. The objective of this study is to develop second-generation processes that produce elemental sulfur with limited use of coal gas. Novel approaches that were evaluated to produce elemental sulfur from sulfided sorbents include (1) SO{sub 2} regeneration, (2) substoichiometric oxidation, (3) steam regeneration followed by H{sub 2}S oxidation, and (4) steam-air regeneration. Experimental results at high temperature and high pressure demonstrate that, with simple sorbent modifications, direct regeneration to elemental sulfur is feasible without the use of coal gas.
- Research Organization:
- USDOE Morgantown Energy Technology Center (METC), WV (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 181494
- Report Number(s):
- DOE/METC/C-96/7219; CONF-951180-2; ON: DE96004339; NC: NONE; TRN: 96:001177
- Resource Relation:
- Conference: Annual meeting of the American Institute of Chemical Engineers, Miami Beach, FL (United States), 12-17 Nov 1995; Other Information: PBD: 1995
- Country of Publication:
- United States
- Language:
- English
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