排ガス脱硫装置酸化塔のバイパス運転方法

Bypass operation method of oxidation tower in flue gas desulfurizer

Abstract

<P>PROBLEM TO BE SOLVED: To easily operate a desulfurizer and to reduce the power costs for a seal water pump and an air compressor for operating the oxidation tower by grasping the properties and states of the respective treatment steps of the desulfurizer. <P>SOLUTION: In removing sulfur dioxides from a flue gas by forming calcium sulfate by reacting calcium sulfite formed in an absorption tower 10 and a reaction tank 3 with oxygen in an oxidation tower 4, while the properties of the flue gas to be treated reach standard values in regard to, e.g., an SO<SB>2</SB>concentration, the calcium sulfite formed in the absorption tower 10 and the reaction tank 3 bypasses the oxidation tower 4 and enters a gypsum concentration tank 5 downstream thereof. <P>COPYRIGHT: (C)2009,JPO&INPIT
【課題】脱硫装置の各処理工程の性状を把握することで、容易に操作できると共に、酸化塔を運転するための封水ポンプ及び酸化用空気圧縮機の動力費が削減する。 【解決手段】吸収塔10、反応槽3で生成された亜硫酸カルシウムを、酸化塔4で酸素と反応させて硫酸カルシウムを生成することにより排ガス中の硫黄酸化物を除去する際に、この処理する排ガスが、SO 2 濃度等が所定の基準値に達しているときに、吸収塔10、反応槽3で生成された亜硫酸カルシウムを、酸化塔4をバイパスして、その下流の石膏濃縮槽5へ流入させる。 【選択図】図1

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    CN-103831007-AJune 04, 2014胡宏兴, 林崇军一种炭黑炉烟气湿法脱硫系统