乙烯装置碳二加氢反应器开车过程优化

Optimization of start-up process of C2 hydrogenation reactor in ethylene cracker

通过在碳二加氢反应器进料冷却器工艺侧增加调温跨线,对碳二加氢充压线进行改造;优化裂解气压缩机五段防喘振阀控制方式,以满足开工初期装置投料量低时反应器对空速的要求。经过上述改造及开工控制方式优化,降低了碳二加氢反应器进料加热器蒸汽消耗,缩短了碳二加氢反应器出口乙炔合格时间。

The C2 hydrogenation charging system is renovated through adding a temperature regulating cross-line in the process side of the feed cooler of the C2 hydrogenation reactor.The control mode of anti-surge valve in the fifth stage of cracking gas compressor is optimized to meet the requirement of the reactor at the initial stage of start-up when the feed amount is low.Through such renovation and the optimization of start-up control mode,the steam consumption of the feed heater in the C2 hydrogenation reactor is reduced,and the time needed by acetylene at the outlet of the C2 hydrogenation reactor reaching qualification is shortened.