Multicontaminant Warm Gas Cleanup

76212-Emission control technologies for IGCC (Integrated Gasification Combined Cycle) plants must address the removal of mercury, sulfur oxides, nitrogen oxides, and particulates. Two types of technologies are available for synthesis-gas clean up from these plants: (1) hot gas cleanup (which operates at approximately 1,000¿F) and (2) cold gas cleanup (less than 100¿F). However, a warm gas cleanup technology that operates at 300 ¿ 700¿F could more easily be used in association with downstream power generation (gas and steam turbines) as well as in fuel and chemical synthesis (e.g. methanol and Fisher-Tropsch synthesis). This project will develop technology for removing sulfur and mercury compounds from syngas in this mid-temperature range (300 ¿ 700¿F). Phase I will demonstrate the concept using a laboratory scale test apparatus. Engineering and economic analyses will be conducted, and the efficiency and cost of this process will be compared to conventional hot or cold gas cleanup. In Phase II, a demonstration test, using a slip-stream of syngas from a coal gasifier, will be conducted. Commercial Applications and Other Benefits as described by the awardee: The technology, should significantly reduce the cost of syngas clean up, enabling IGCC plants to more effectively integrate the gasifier with downstream processes, whether power generation or fuels and chemicals production.