| 摘要 |
PROBLEM TO BE SOLVED: To allow use of a carbonaceous adsorbent at a temperature above 500°C. SOLUTION: The method for removing a sulfur compound includes a step of passing combustible gas, which is formed by gasification of a carbonaceous raw material, through a porous carbon material at a temperature above 500°C to remove a sulfur compound (H<SB>2</SB>S, COS, CS<SB>2</SB>and the like) in the combustible gas. A desirable material for the porous carbon material carries a metal component. Preferably, the porous carbon material is char obtained from wood-based biomass. The ash content of the char is 3-50 mass% for example. The char usually has a total specific surface area of ≥200 m<SP>2</SP>/g and a mean pore diameter of 2.0-3.5 nm. In the sulfur compound removal step, a gas passage temperature is set to 600-800°C to decompose part or the whole of the sulfur compound into a simple substance S. The simple substance S contained in the sulfur compound removal gas can be removed by an adsorption removal, liquefaction removal, solidification removal and the like. COPYRIGHT: (C)2009,JPO&INPIT |
