| 摘要 |
<p>PURPOSE:To efficiently remove a sulfur compd. contained in a reducing gas, by calcining an adsorbent on which a sulfur compd. contained in a high-temp. reducing gas has been adsorbed and using the obtained regenerated gas for pressurizing air or oxygen for desorption. CONSTITUTION:A coal, a heavy oil, etc., 1 is fed into a gasifying oven 3 where it is partially burnt with a small amount of air or oxygen 2 to obtain a high- temp. reducing gas 4. Coarse particle dust 6 contained in the high-temp. reducing gas 4 is removed with a dust-collector 5, and a fine dust 8 is removed with a precision dust collector 7 to obtain a gas 9. The gas 9 is fed into an adsorption-regeneration apparatus 10 where the gas is brought into contact with an adsorbent to remove a sulfur compd., thereby obtaining a refined gas 11. Air and/or oxygen 17 is fed into a regeneration apparatus 10 through a compressor 16 to calcine the adsorbent. The obtained SO2 gas 12 is fed through a gas cooler 13 and a blower 14 into a gas expander 20 to expand the gas. The power is transmitted to the compressor 16 which is coaxial with the gas expander 20 for use in pressurizing air for calcination.</p> |
