Analysis Of Throughput Increasing Scheme And Research Of Running Optimization For Huangqi Oil Pipeline

Huangqi oil pipeline is a long distance oil pipeline consisting of the Huangdao-Guangraosegment of old Donghuang oil pipeline and Guangqi oil pipeline, in order to adapt theadjustment of the flow direction of the pipeline, and meet the needs of imported crude oil withQilu Petrochemical Corporation. After the adjustment of the flow direction of the pipeline,there are Huangdao, Changyi and Shouguang heating and pump stations running permanentlyalong with the oil pipeline. Because of the degradation of pipeline and equipments fromHuangdao to Guangrao, the pressurization of the pipeline decrease remarkably. Thetransportation capability of the pipeline can not meet the needs of Qilu PetrochemicalCorporation. So, the throughput increasing measure is needed. Selecting reasonablethroughput increasing measure and optimizing pipeline operations have important meaning tothe decreasing of the investment and oil transportation cost of the pipeline.For the need of 6,000,000 tons per year of Huangqi oil pipeline, the equivalent pipediameters of each segment of the pipeline are calculated on the basis of running data of thepipeline and the maximum transportation capability is gained through thermodynamic andhydraulic calculation, basing upon the investigation and analysis of the pipe and equipmentsof Huangqi oil pipeline. Through measuring of rheological behaviors of the mixed oils withdifferent mixing proportions and different antifreezing agent concentrations of waxy crude,Oman's crude and Ural's crude oil, the optimum mixing proportion and antifreezing agentconcentration are obtained. The throughput increasing schemes are determined, and theoptimization analysis for the operating schemes are made to the two mixing crude oils atoptimum mixing proportion and antifreezing agent concentration.