工业萘管式炉节能及自动化升级改造

针对山西豪仑科化工有限公司36万t/a焦油加工装置工业萘精馏单元存在的煤气单耗高、安全系数低等问题,通过更换燃烧器、在管式炉顶部增加空气预热器、自动化升级方面增加自动点火装置和快速切断阀等措施,使管式炉排烟温度由450℃降低到小于140℃,助燃空气温度由30℃提高到280℃,管式炉热效率由原来的68.5%提高到81.4%,加工吨焦油的煤气单耗降低约0.61 m³,加热炉操作便捷性和安全稳定性得到提高。

Energy saving and automation upgrading of industrial naphthalene tubular furnace

In view of the problems of high unit gas consumption and low safety factor in the industrial naphthalene distillation unit of 360000 t/a tar processing plant of Shanxi Holeco Chemical Co.,Ltd.,the exhaust gas temperature of the tubular furnace was reduced from 450℃to less than 140℃by replacing the burner,adding an air preheater at the top of the tubular furnace,and adding automatic ignition device and quick shut-off valve in terms of automation upgrading.The temperature of combustion supporting air was increased from 30℃to 280℃,the thermal efficiency of tubular furnace was increased from 68.5%to 81.4%,the unit consumption of gas for tar processing was reduced by about 0.61 m³ per ton,and the operation convenience,safety and stability of heating furnace were improved.