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烧结过程中解耦燃烧与烟气返回共脱硝新工艺Ⅰ:模拟烧结矿带的脱硝机理
Authors
王志
郭占成
陈彦广
Publication date
1 January 2008
Publisher
Abstract
基于煤的解耦耦合燃烧原理和烟气返回脱硝技术,并结合烧结工序特点,提出了烧结过程中解耦燃烧与烟气返回共脱硝新工艺,详细介绍了该工艺的基本原理和工艺流程,对其可行性进行了热力学计算分析;重点研究了烧结矿带发生的脱硝反应.利用烧结矿作填料,采用H2、CO和NH3模拟热解气主要组分对返回烟气中NOx的脱除进行了实验研究.结果表明,450-550℃下烧结过程引入4.0%的H2或4.0%的CO,可使NOx的浓度降低20%-40%;620-660℃时烧结过程引入0.15%的NH3,可使NOx浓度降低20%-30%.烧结过程解耦燃烧与烟气返回共脱硝工艺可有效减少NOx的排放,同时可降低烧结能耗
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Last time updated on 11/04/2021