| 摘要 |
<p>PURPOSE:To reduce an amt. of desufurizing agent to be replenished for consumption, by reutilizing as a desufurizing agent, dry distilled coal used for a reducing agent of SOx contg. gas released from the desulfurizing agent in a dry type desulfurization apparatus for an SOx contg. flue gas. CONSTITUTION:An SOx-contg. flue gas 4 generated from a boiler 100 is introduced into an adsorber 101 to remove SOx with a desulfurizing agent 7 filled in it by adsorption. The agent 7 having adsorbed SOx is desulfurized in a thermodesulfurizing oven 103, and SOx generated is fed to a reducing oven 105. On the other hand, a part of coal 1 is fed to a crushing classifier 107, dry-distilled in a dry-distilling oven 108, the obtd. dry-distilled coal is fed to the oven 105, the desorbed SOx-contg. gas is reduced to solid sulfur, and sent to a sulfur recovery system 110. The dry-distilled coal as the reducing agent is activated in the oven 105 with steam or SOx, and SOx adsorptivity is regenerated, so it is fed to the adsorber 101 to replenish it for a part of the desulfurizing agent 7 consumed mechanically and chamically.</p> |
