吉拉克凝析气田低温集气站工艺分析与优化
发布时间：2018-12-15 02:52
【摘要】：本文针对吉拉克凝析气田低温集气站在生产中存在的基本问题，即关键组分收率偏低、低温集气站能耗高等情况，在分析国内外轻烃回收工艺、模拟软件、最优化技术现状与发展的基础之上建立了低温集气站的部分重要单元如三相分离器、压缩机、泵和精馏塔、分子筛脱水器等重要单元的HYSYS模型，对该集气站进行了全流程的HYSYS软件模拟，给出了主要模拟过程和模拟结果并与现场工况进行了对比。通过分析乙二醇循环量、脱乙烷塔塔底温度、液化气塔塔底温度、回流比、膨胀机出口压力等关键参数变量对优化目标的影响趋势和影响程度，同时计算了分子筛脱水模块的负荷，得到了主要变量对液化气、凝析油和外输天然气的影响，为优化变量的选择和优化变量的调整与优化提供了依据。建立了丙烷单位能耗下回收率最高和收率最高的工艺计算优化模型，分别运用HYSYS内部的优化模块和运用节点分析得到了不同的优化方案，，最终经过比选得了到满足最优化变量的主要操作参数。在优化目标最优条件下丙烷和关键组分组分收率大大提高,并且在最大限度上降低了系统能耗，达到了同时提高收率和降低能耗的目的。
[Abstract]:In view of the basic problems existing in the production of the low temperature gas collection station in Gerac condensate gas field, that is, the low yield of key components and the high energy consumption of the low temperature gas collection station, this paper analyzes the recovery process of light hydrocarbon at home and abroad, and simulates the software. Based on the present situation and development of optimization technology, the HYSYS model of some important units of low temperature gas collection station such as three-phase separator, compressor, pump and distillation column, molecular sieve dehydrator and so on is established. The HYSYS software is used to simulate the whole flow of the gas collecting station. The main simulation process and simulation results are given and compared with the field working conditions. By analyzing the influence trend and influence degree of key parameters such as ethylene glycol circulation, bottom temperature of deethane tower, bottom temperature of LPG tower, reflux ratio, outlet pressure of expander, etc. At the same time, the load of molecular sieve dehydration module was calculated, and the influence of main variables on LPG, condensate oil and natural gas was obtained, which provided the basis for the selection of optimization variables and the adjustment and optimization of optimization variables. A process calculation optimization model with the highest recovery and highest yield per unit energy consumption of propane was established. Different optimization schemes were obtained by using the optimization module inside the HYSYS and the node analysis, respectively. Finally, the main operating parameters that satisfy the optimization variables are selected by comparison. Under the optimal conditions, the yield of propane and key components is greatly improved, and the energy consumption of the system is reduced to the maximum extent, thus achieving the purpose of simultaneously increasing the yield and reducing the energy consumption.
【学位授予单位】：重庆科技学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE372
本文编号：2379829
[Abstract]:In view of the basic problems existing in the production of the low temperature gas collection station in Gerac condensate gas field, that is, the low yield of key components and the high energy consumption of the low temperature gas collection station, this paper analyzes the recovery process of light hydrocarbon at home and abroad, and simulates the software. Based on the present situation and development of optimization technology, the HYSYS model of some important units of low temperature gas collection station such as three-phase separator, compressor, pump and distillation column, molecular sieve dehydrator and so on is established. The HYSYS software is used to simulate the whole flow of the gas collecting station. The main simulation process and simulation results are given and compared with the field working conditions. By analyzing the influence trend and influence degree of key parameters such as ethylene glycol circulation, bottom temperature of deethane tower, bottom temperature of LPG tower, reflux ratio, outlet pressure of expander, etc. At the same time, the load of molecular sieve dehydration module was calculated, and the influence of main variables on LPG, condensate oil and natural gas was obtained, which provided the basis for the selection of optimization variables and the adjustment and optimization of optimization variables. A process calculation optimization model with the highest recovery and highest yield per unit energy consumption of propane was established. Different optimization schemes were obtained by using the optimization module inside the HYSYS and the node analysis, respectively. Finally, the main operating parameters that satisfy the optimization variables are selected by comparison. Under the optimal conditions, the yield of propane and key components is greatly improved, and the energy consumption of the system is reduced to the maximum extent, thus achieving the purpose of simultaneously increasing the yield and reducing the energy consumption.
【学位授予单位】：重庆科技学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE372
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本文编号：2379829
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