Bench-Scale Demonstration of Hot-Gas Desulfurization Technology
Prior to the current project, development of the DSRP was done in a laboratory setting, using synthetic gas mixtures to simulate the regeneration off-gas and coal gas feeds. The objective of the current work is to further the development of zinc titanate fluidized-bed desulfurization (ZTFBD) and the DSRP for hot-gas cleanup by testing with actual coal gas. The objectives of this project are to: (1) Develop and test an integrated, skid-mounted, bench-scale ZTFBD/DSRP reactor system with a slipstream of actual coal gas; (2) Test the bench-scale DSRP over an extended period with a slipstream of actual coal gas to quantify the degradation in performance, if any, caused by the trace contaminants present in coal gas (including heavy metals, chlorides, fluorides, and ammonia); (3) Expose the DSRP catalyst to actual coal gas for extended periods and then test its activity in a laboratory reactor to quantify the degradation in performance, if any, caused by static exposure to the trace contaminants in coal gas; (4) Design and fabricate a six-fold larger-scale DSRP reactor system for future slipstream testing; (5) Further develop the fluidized-bed DSRP to handle high concentrations (up to 14 percent) of SO{sub 2} that are likely to be encountered when pure air is used for regeneration of desulfurization sorbents; and (6) Conduct extended field testing of the 6X DSRP reactor with actual coal gas and high concentrations of SO{sub 2}. The accomplishment of the first three objectives--testing the DSRP with actual coal gas, integration with hot-gas desulfurization, and catalyst exposure testing--was described previously (Portzer and Gangwal, 1994, 1995; Portzer et al., 1996). This paper summarizes the results of previous work and describes the current activities and plans to accomplish the remaining objectives.
- Research Organization:
- National Energy Technology Lab., Pittsburgh, PA, and Morgantown, WV (US)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE) (US)
- DOE Contract Number:
- AC21-93MC30010
- OSTI ID:
- 16503
- Report Number(s):
- DOE/MC/30010-98/C0931; CONF-970772-; ON: DE98051665; TRN: US200511%%121
- Resource Relation:
- Conference: Advanced Coal-Based Power and Environmental Systems, Conference location not provided, Conference dates not provided; Other Information: Supercedes report DE00016503; Supercedes report DE98051665; PBD: 1 Jul 1997; PBD: 1 Jul 1997
- Country of Publication:
- United States
- Language:
- English
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