| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the increase of desulfurizing cost and to carry out exhaust gas desulfurization with an inexpensive method by reducing the high sulfur concn. in the exhaust gas, because each of coal, coke, oil coke, is used as a reducing agent and the comparatively high sulfur quantity is carried into a rotary furnace and much heavy oil as a combustion improver is used. SOLUTION: The mass of alkaline metal supplied together with raw material is made to >=2 times of the chemical equivalent method with sulfur oxide discharged in the exhaust gas. As the other way, the mass of the alkaline metal supplied together with the raw material is desirable to be made to >=2 times of the chemical equivalent reacted with the sulfur oxide calculated from the total sum of 20% in the sulfur content in pellet formed by granulating mixture of powdery material containing metal oxide and powdery reducing agent consisting essentially of carbon and the sulfur content in the combustion improver for combustion.</p> |
