| 摘要 |
<p>PURPOSE:To improve an efficiency of desulfurizing a flue gas by analyzing a sulfur content of coal with an automatic analyzer, estimating a sulfur oxide content in flue gas after burning that coal and controlling an amount of absorbent supply into a desulfurizing apparatus. CONSTITUTION:A low sulfur coal and a high sulfur coal are taken out from respective hoppers 2 and 5 according to a prescribed mixing ratio and mixed together. The mixed coal is sampled by way of a sampling line 13, a sulfur content of that coal is measured with an automatic analyzer after analyzing and mixing them and a signal of estimated sulfur oxide content in flue gas after burning that coal is put out. The mixed coal is burnt in a boiler 8, the flue from the boiler 8 is desulfurized by a desulfurization apparatus 10, and the cleaned flue gas is ejected out of a stack 11 into the atmosphere. The sulfur oxide content in the flue gas out of the stack is controlled by an amount of absorbent supplied into the desulfurizing apparatus 10 based on the output signal 12.</p> |
