SCR脱硝法氨气控制系统分析和改进

烟气脱硝在燃煤工厂越来越受到重视，由于选择性催化还原法SCR用的是氨气和氧气在催化剂的作用下与烟气中的氮氧化物发生反应来脱硝，而氨气释放量是其中很重要的控制因素。以往都是控制释放氨气的调节阀尺寸来控制氨气释放量，有很多不便之处。本文提出一种新的控制思路，克服以往控制方式的缺点。

SCR denitration ammonia control system analysis and improvement

The flue gas denitrification is paid more and more attention to. Due to the reaction of SCR, the oxygen reacts with ammonia in the presence of catalyst. However, the emissions of ammonia is a very important factor. In the past, we often control the valve size of opening to decide the emissions of ammonia. And there are a good deal of inconvenience. This paper present a new control strategy to overcome the shortcomings of the past.