Integration and testing of hot desulfurization and entrained-flow gasification for power generation systems. Phase 2, Process optimization: Volume 3, Effect/fate of chlorides in the zinc titanate hot-gas desulfurization process
The objective of this project was to support Texaco`s effort to develop the zinc titanate hot-gas desulfurization process for gases produced from their oxygen-blown coal gasifier by answering two key questions that had remained unanswered to date. These questions were: Will chloride in the coal gas affect the performance of the sorbent? Where would the chloride end up following sulfidation and regeneration? Previously, Research Triangle Institute (RTI) completed a bench-scale test series, under a subcontract to Texaco, Inc., for their contract with the US Department of Energy/Morgantown Energy Technology Center (DOE/METC), in which zinc titanate was shown to be a highly promising sorbent for desulfurizing the Texaco O{sub 2}-blown simulated coal gas. The next step was to evaluate the effect of coal gas contaminants, particularly chloride, on the sorbent. No tests have been carried out in the past that evaluate the effect of chloride on zinc titanate. If ZnO in the sorbent reacts with the chloride, zinc chloride may form which may evaporate causing accelerated zinc loss. Zinc chloride may revert back to the oxide during oxidative regeneration. This may be enhanced in the presence of steam. This report provides results of a three-test series which was designed to give some definitive answers about the fate of chloride in the hot-gas desulfurization process and the effect of chloride on the performance of zinc titanate.
- Research Organization:
- Texaco, Inc., Montebello, CA (United States). Montebello Research Lab.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC21-87MC23277
- OSTI ID:
- 10130171
- Report Number(s):
- DOE/MC/23277-3141-Vol.3; ON: DE93000227
- Resource Relation:
- Other Information: PBD: Sep 1991
- Country of Publication:
- United States
- Language:
- English
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Integration and testing of hot desulfurization and entrained-flow gasification for power generation systems. Volume 2, Evaluation of zinc loss from zinc titanate sorbents during hot gas desulfurization: Final report, October 1, 1987--October 31, 1993
Integration and testing of hot desulfurization and entrained-flow gasification for power generation systems. Phase 2, Process optimization: Volume 2, Study of zinc titanate desulfurization sorbents