2016年第4期（总第220期）
doi:10.3969/j. issn. 1009 3230.2016.04.006
应用能源技术
29
330MWCFB炉脱硫自动控制改造分析与实践
李智华"3，高尔栋*3，董加福"-3，郭石开2.3
（1.华北电力大学能源动力与机械工程学院，北京昌平102206;2.华北电力大学控制与计算机学院，
北京昌平102206;3.内蒙古京海煤研石发电有限责任公司，内蒙古乌海016000）
摘要：火电厂锅炉烟气排放中的硫化物和氮氧化物是大气污染的主要来源。随着环保问题越来越多的得到关注，脱硫项目在CFB锅炉生产运行中的作用也越来越突出。介绍了京海电厂330MW循环流化床锅炉在达到新环保考核要求过程中，脱硫自动控制系统控制策略进行的分析设计与优化，包括主控制逻辑、串级控制系统前馈量的设计与分析、石灰石导料系统顺控以及计量方法等，并对改造前后SO，实际运行情况进行了对比。对同类型机组脱硫自动控制设计和投运提供参考。
关键词：循环流化床；脱硫；自动控制；前馈：顺控
中图分类号：TK229.3
文章编号：10093230(2016)04002906
文献标志码：B
AnalysisandPracticeontheReformofCFB330MWBoiler
DesulphurizationAutomatic Control
LI Zhi hua'-3, GAO Er dong2-3, DONG Jia fu'-3, GUO Shi kai2.3
(1. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China; 2. School of Control and Computer Science, North China Electric Power University,Beijing 102206, China; 3.Inner Mongolia Jingshi Coal Gangue Power
Generation Co.,Ltd.Wuhai 016000,Inner Mongolia,China)
Abstract: The emissions of sulfur dioxide and nitrogen oxides from power plant boiler flue gas are the main source of air pollution. As the environmental issues get more attention, China's environmental protection policy also becoming more and stricter, therefore the role of CFB boiler desulfurization project in the production process has become increasingly prominent. This paper mainly describes the analysis of the design and optimization of Jinghai Power 330MW CFB boiler new desulfurization automatic control system and the control strategy, which is in order to meet the new requirements of environmental assessment. This article includes the main control logic, design and analysis of feedforward amount of limestone feeding system guide sequence and desulfurization system alarms and
measurement issues, andthe actual o project. The authors wish that the
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Key words: Circulating fluidized bed; Desulfurization; Automatic control ; Feedforward; Sequence control
0引言
京海电厂330MW锅炉型号为DG1177/17.4
收稿日期：2016-02-16
修订日期：201603-10
作者简介：李智华（1977-），男，内蒙临河人，工程师，硕士
研究生在读，从事330MW循环流化床机组检修与技术管理方面工作。
万方数据
-Ⅲ型循环流化床锅炉（CFB），亚临界参数，单炉膛，一次中间再热自然循环汽包炉。配置1个膜式水冷壁炉膛、3台汽冷式旋风分离器、3台回料阀、6 台滚筒式冷渣器。采用炉内喷钙法脱硫原理，即干法脱硫。传统观念认为湿法脱硫效率高，可以达到 95%以上，而干法脱硫效率低，最大达到90%。为