| Liquid gas fractionation device is mainly used for separating raw material gas desulfurization and sweetening after, produce the purity reaches more than 99.6% fine propylene as raw materials, production of polypropylene; production of carbon four components as the production of MTBE products of raw materials. Gas fractionation unit for transforming refinery to petrochemical hub, in relation to the refinery product normal output and petrochemical enterprises of raw materials supply of the normal switch of gas fractionation unit, when problems of gas fractionation unit switch, the refining and chemical normal connection, according to the gas fractionation unit construction more difficult, operating loss the problem, focuses on the influence of the tower of gas fractionation unit construction, focusing on the depropanizer operation and propylene tower operation to start, put forward optimization of gas fractionation unit started.Gas fractionation unit pump flow operating goal is to make the propane compressor into propylene tower system, adjust the propylene tower operation, as soon as possible to produce qualified propylene product, mainly existing in gas fractionation unit start-up process in question is, depropanizer system operation is not good, propylene tower system storage time is long, the Propane Compressor into propylene tower system difficulties, resulting in gas fractionation unit started a long time, loss of large, construction energy consumption increase. From the source, adjust the depropanizer operation, the technical transformation, accelerate the storage rate of propylene tower system, good control of the key construction steps, to ensure early qualified propylene. |
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