| 摘要 |
PROBLEM TO BE SOLVED: To provide a desulfurization method and an apparatus capable of efficiently desulfurizing coke oven gas.SOLUTION: When hydrogen sulfide is continuously removed from coke oven gas Gby leading the coke oven gas discharged from a coke oven into an absorption tower 21, leading an absorbent L staying in the lower part of the absorption tower 21 to the upper part of the absorption tower 21 and spraying it, absorbing hydrogen sulfide contained in the coke oven gas Ginto the sprayed absorbent L to make it fall into the absorbent L staying in the lower part of the absorption tower 21, circulating the absorbent L in the absorption tower 21, leading a part of the absorbent L staying in the lower part of the absorption tower 21 into a regeneration tower and separating the hydrogen sulfide absorbed in the absorbent L to regenerate the absorbent L and then returning the regenerated absorbent L to the absorption tower 21, and circulating the absorbent L between the absorption tower 21 and the regeneration tower 22, ammonia vapor is made to pass through the absorbent L staying in the lower part of the absorption tower 21. |
