CAJ | 학술논문

化工流程模拟软件不断发展,越来越多的化工装置开始采用流程模拟来优化装置的操作.基于精馏过程的实际运行数据,建立了能够良好描述装置实际运行工况的模型,实现了对芳烃联合装置邻二甲苯精馏过程的流程模拟.利用Aspen Plus建立装置模型,按照工艺条件及产品分离要求,使用设计规定工具,对采用精馏方式从混合C8～C10物料中分离邻二甲苯(OX)工艺进行研究.模拟结果与实际工业过程数据相符,能够满足工业建模的要求.基于模型,研究了进料塔板位置、回流比和塔顶采出量等变量对装置稳定运行的影响,从进料塔板,塔顶采出量和进料组分等方面提出了优化建议.研究结果表明:精馏塔塔顶采出量为OX产品主要杂质异丙苯(IPB)含量的显著影响因素.据此提出了包括回流比和塔顶采出量参数的优化方案,可以使主要杂质异丙苯的含量下降40%的同时,每年可节省燃料成本.
화공류정모의연건불단발전,월래월다적화공장치개시채용류정모의래우화장치적조작.기우정류과정적실제운행수거,건립료능구량호묘술장치실제운행공황적모형,실현료대방경연합장치린이갑분정류과정적류정모의.이용Aspen Plus건립장치모형,안조공예조건급산품분리요구,사용설계규정공구,대채용정류방식종혼합C8～C10물료중분리린이갑분(OX)공예진행연구.모의결과여실제공업과정수거상부,능구만족공업건모적요구.기우모형,연구료진료탑판위치、회류비화탑정채출량등변량대장치은정운행적영향,종진료탑판,탑정채출량화진료조분등방면제출료우화건의.연구결과표명:정류탑탑정채출량위OX산품주요잡질이병분(IPB)함량적현저영향인소.거차제출료포괄회류비화탑정채출량삼수적우화방안,가이사주요잡질이병분적함량하강40%적동시,매년가절성연료성본.
With the extensive application of chemical analogue software,more and more chemical plants seek to optimize operation with flow analogue software.The fractionation proccss has been simulated by modeling the process according to the industrial operation data.In this paper,the separation process of o-xylene(OX) from the mixture of C8～C10 material has been studied.The research was performed with specified design tool to construct the equipment model in the Aspen Plus software according to the operation condition and separation requirement.The results of model simulation agreed with actual data fairly and the process model can satisfy the needs of process simulation.Based on the established model,the operated variables and the controlled variables such as the tray of the feed,the reflux ratio and produced quantity of the tower top which having important effect on the stability of the industrial process were studied.The relevant suggestion is given according to the above researches respectively.The research results shown that the production rate from the top of the distillation has significant influence on the content of the major impurity isopropyl benzene(IPB) .Moreover the optimization strategy was designed for the parameters of the reflux ratio and the distillation top production rate.By using this strategy the content of the impurity isopropyl benzene has been decreased by 40%.Meanwhile cost has been saved per year due to less consumption of the fuels.