焦炉集气管压力控制的论文.docx

焦炉集气管压力的智能协调控制
叶鲁彬王屹杨建波
(浙江中控技术股份有限公司, 杭州 310053)
摘要:焦炉集气管压力之间耦合严重,稳定性较差,极易出现压力振荡现象。综合考虑多集气管及风机、回流的特性,设计了一种集气管压力的智能协调控制方案:集气管翻板阀采用双模式PID算法,风机或回流阀进行整体吸力的协调控制,同时引入了振荡检测机制,并对压力振荡进行抑制。该控制方案的效果已在焦化企业现场得到了实践验证,并在多个现场应用。
关键词:集气管压力,耦合,振荡,智能协调控制
Intelligent Collaboration Control of Gas Collection Pipe Pressure in Coke Oven Processes
YE Lu Bin Yang Jian Bo
(Zhejiang SUPCON Co., Ltd., Hangzhou, Zhejiang, 310053)
Abstract:In the gas collection process of coke ovens, the pipes have high coupling relations, which result in the unstableness of the pressure. The pressure oscillation phenomena are frequently reported in practical productions. This paper proposed an intelligent collaboration control solution, which take the characteristics of gas collection pipes, fan and the recycle pipe into consideration. Dual – mode PID algorithm is utilized in the gas collection pipe pressure control formulation and the fan speed and recycle valve are manipulated to keep the entire flow power. Pressure oscillation detection is introduced here to prevent severe fluctuation of the pipe pressure. The proposed method has been validated and is widely used in the coke production plants.
Key words: Gas Collection Pipe Pressure, Coupling, Oscillation, Intelligent Collaboration Control
1 引言
在焦化生产企业中,集气管压力是炼焦生产过程中的关键指标之一。集气管压力过高容易引起焦炉的煤气泄漏,造成煤气的浪费与环境的污染;压力过低则炭化室容易吸入空气,使焦炭燃烧,影响焦炭的质量及焦炉的寿命,严重时还会影响到后续电捕装置的安全运