硫磺回收装置酸性气燃烧炉配风控制方案优化  

Optimization of Air Distribution Control Scheme for Acidic Gas Furnace in Sulfur Recovery Unit

作　　者：李自皋 杨丽燕[1] 王瑞娥[1] Li Zigao;Yang Liyan;Wang Ruie(Refining ＆ Chemical Plant of Yumen Oilfield Company Instrument Workshop, Yumen, 735200, Chin)

机构地区：[1]玉门油田分公司炼油化工总厂仪表车间,甘肃玉门735200

出　　处：《石油化工自动化》2017年第6期33-36,共4页Automation in Petro-chemical Industry

摘　　要：结合硫磺回收装置酸性气燃烧炉的工艺流程特点,通过对燃烧炉的燃料气、酸性气、H_2S以及SO_2质量浓度比值与预热空气燃烧的比值控制方案与鼓风机排空控制回路的详细介绍,深入分析了它们之间耦合的关系,提出了通过改进鼓风机出口放空空气流量控制的计算方式,将该定值控制回路改为随比率、混合酸性气、大小配风流量变化而变化的随动控制回路,有效地解决了鼓风机排空控制回路与燃烧炉大小配风控制回路之间的耦合关系。实现了鼓风机排空控制回路自动随动变值设定的远程控制,有效地提高了燃烧炉和焚烧炉的燃烧效率,减小了烟气污染物的排放,整体提高了控制回路的自动投运水平。Combining with process characteristics of acid gas furnace for sulfur recovery unit, through detailed introduction on furnace fuel gas, acid gas, ratio control scheme of ρH2S/ ρSO2 and preheated air combustion, and blower evacuation control loop （anti-surge）, coupled relationship among them are discussed deeply. Calculation mode through improving blower export venting air flow control is proposed. The constant value control loop is changed to follow-up loop changing with change of ratio, mixed acid gas, wind distribution flow, coupling relationship linkage between blower evacuation control loop and furnace air distribution control system is effectively solved, control loop automatic follow-up servo variable values of blower set by the remote control is realized, the combustion furnace and incinerator combustion efficiency is effectively improved.Emission of flue gas pollutants is reduced. The level of control circuit of automatic operation is improved as a whole. Key words： sulfur furnace air distribution; ratio cascade regulation; follow-up remote set-point control; blower evacuation control

关 键 词：制硫燃烧炉配风 比率值串级调节 随动远程设定值控制 鼓风机排空控制 

分 类 号：TE96[石油与天然气工程—石油机械设备] TP273[自动化与计算机技术—检测技术与自动化装置] X742[自动化与计算机技术—控制科学与工程]