High temperature desulfurization using molten carbonate membrane
One effective way to improve the thermal efficiency of a IGCC (Integrated Gasification Combined Cycle) plant is to increase the operating temperature of the desulfurization system. In this study, a new desulfurization process using molten carbonate membrane is proposed. In this process, molten salt is soaked into a porous ceramic sheet to form a molten carbonate membrane. The syngas containing H{sub 2}S and HCI is flowing through one side of the membrane, and the flow is in contact with the molten carbonate, through which the sulfur and chlorine compounds will react with the molten carbonate on the surface of the membrane, and H{sub 2}O and CO{sub 2} will be discharged into a gas stream. Main features of this process are the high operating temperature (600{approximately}800 C) and the possibility of simultaneous desulfurization and dechlorination. Desulfurization experiments using molten carbonate membrane were done, which demonstrated desulfurization from the simulated syngas as well as migration of sulfur through the membrane into the simulated regeneration gas.
- Research Organization:
- Tokyo Inst. of Tech., Yokohama (JP)
- OSTI ID:
- 20006861
- Country of Publication:
- United States
- Language:
- English
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