首页> 外国专利> DRY DENITRATION OF SULFUR OXIDE-CONTAINING LOW TEMPERATURE EXHAUST GAS AND DESULFURIZING-DENITRATING CATALYST

DRY DENITRATION OF SULFUR OXIDE-CONTAINING LOW TEMPERATURE EXHAUST GAS AND DESULFURIZING-DENITRATING CATALYST

机译:含硫的低温排气的干法脱氮及脱硫脱氮催化剂

摘要

PURPOSE: To inexpensively desulfurize and denitrate sulfur oxide-containing low temp. exhaust gas with high efficiency and to facilitate the regeneration treatment of a manganese ore used in desulfurization. CONSTITUTION: In the first manganese ore moving bed 3 among two manganese ore moving beds 3, 4 arranged in series with respect to the flow of exhaust gas A, a manganese ore B is used as a catalyst not only to oxidize sulfur dioxide in an exhaust gas B' to sulfur trioxide but also to highly remove sulfur oxides as ammonium sulfate by ammonia D. At the same time, a part of nitrogen oxide is also removed by ammonia catalytic reducing denitration using the manganese ore B as a catalyst. Thereafter, in the second manganese ore moving bed 4, a manganese ore C is used as a catalyst to reduce nitrogen oxides in an exhaust gas A" to nitrogen using unreacted ammonia of the manganese ore moving bed 3 as a reducing agent. The mangannese ore B' used in the removal of sulfur oxides is washed to remove bonded ammonium sulfate and circulated to be reused in the removal of sulfur oxides.
机译:目的:廉价地脱硫和脱硝含硫氧化物的低温。高效排气,并促进脱硫中所用锰矿石的再生处理。构成:在相对于废气A的流动串联布置的两个锰矿石移动床3、4中的第一锰矿石移动床3中,锰矿石B不仅用作氧化废气中的二氧化硫的催化剂,还用作催化剂气体B'转化为三氧化硫,还可以通过氨D高度去除硫酸铵之类的硫氧化物。同时,还通过使用锰矿B作为催化剂的氨催化还原脱硝法去除了一部分氮氧化物。此后,在第二锰矿石移动床4中,使用锰矿石C作为催化剂,以锰矿石移动床3的未反应的氨作为还原剂将废气A”中的氮氧化物还原为氮。洗涤用于除去硫氧化物的B′,以除去键合的硫酸铵,并循环以再用于除去硫氧化物。

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