济南石化1号催化裂化装置流程模拟应用

济南石化1号催化裂化装置通过流程模拟技术,寻找制约装置生产的瓶颈,以此来优化操作条件,降低能耗,离线培训操作人员,加强工艺人员对工艺机理的掌握,从而改善操作,提高企业的竞争能力。针对主分馏塔顶循环油-热媒水取热点取热能力不足的问题,利用模型,对分馏塔热负荷进行核算和优化,投用1号催化裂化装置主分馏塔顶循环与气体分馏装置的热联合,实现了主分馏塔低温热利用的最大化。热联合流程投用后,与使用蒸汽比较,1号气体分馏装置丙烷塔运转基本无异常;热媒水入装置温度下降3℃,热油入装置温度为145℃,重沸器出口温度为103℃,热油出装置温度为129℃,热油三通阀开度在40%～50%之间,满足装置操作要求。模拟优化后,气分装置丙烷塔底重沸器1.0MPa蒸汽消耗下降4.5t/h,1号催化裂化装置原料从油浆取热增加,油浆减少发汽量1.1t/h;顶循-循环水冷却器上水关小后,循环水消耗降低80t/h,全年实现综合效益338万元。

The Application of Process Simulation Technology in Sinopec Jinan Company's No.1 Catalytic Cracker

Process simulation technology has been used to help technicians identify the bottlenecks curbing production of Sinopec Jinan Company′s No.1 catalytic cracking unit,optimize the unit′s operation to reduce energy consumption and train operators in an offline manner to give them a better understanding of the working principles of the process,thereby improving operations and enhancing the company′s competitiveness.To address the problem that there is not enough heat at the top circulating oil-heat medium water heat collection point of the primary fractionation column,technicians used modeling technology to calculate and optimize the heat load of the fractionation column and introduced heat integration for the top circulating oil of the primary fractionation column and the gas fractionation device of the No.1 catalytic cracking unit,thereby maximizing the utilization of low-temperature heat from the primary fractionation column.After the introduction of heat integration,compared with the use of steam,the propane column of the No.1 gas fractionation unit has been operating well;the temperature of the heat-medium water when entering the unit has dropped by 3℃,the temperature of the hot oil when entering the unit is 145℃,the temperature at the outlet of the reboiler is 103℃,the temperature of hot oil when exiting the unit is 129℃ and the opening of the hot-oil three-way valve ranges between 40% and 50%.All requirements of the units have been met.Through the optimization,the consumption of 1.0MPa steam of the reboiler at the bottom of the propane column of the gas separator dropped 4.5t/h;as the heat from oil slurry for the feedstock of the No.1 catalytic cracking unit increases,the amount of vapor generated from the oil slurry dropped by 1.1t/h;after the supply of feeding water is reduced for the top circulating oil-circulating water cooler,the consumption of circulating water dropped by 80t/h and annual economic benefits from this optimization reach 3.38 million yuan.