原油电脱水参数优化

发布时间：2018-06-12 06:24

本文选题：电脱水系统 + 泵效优化　；参考：《西安石油大学》2017年硕士论文

【摘要】：随着油田进入高含水采油阶段,开采出原油的含水率也在不断增大,导致电脱水系统的能源消耗、运行费用以及脱水效率也在变化。本文主要的研究内容就是在不改造现有的电脱水工艺流程下,根据最优化问题的理论知识,研究原油电脱水系统的运行参数优化,从而达到节约能源、降低资源消耗、减少原油电脱水系统的运行成本的目的。本文首先对电脱水系统工艺流程和主要运行设备进行了分析研究,确定了电脱水系统的主要耗能设备。其次,通过对脱水泵运行特性的分析研究,建立泵运行的数学模型,对脱水泵运行效率进行了优化,求解出泵运行的最优工况点(Q*、H*、I*、η*),通过最小二乘法验证了本文对脱水泵的参数优化是合理并且有效的。第三,考虑到电脱水系统的运行费用,即电费、燃料费用、药剂费用,建立了原油电脱水系统的目标函数;选择了电脱水器的操作电压和电流、化学破乳剂浓度以及脱水加热炉出口温度为优化变量;以满足国家生产规定的原油含水率、污水含油率及所有设备的操作条件等为约束条件,建立了一个相对完整的原油电脱水系统的优化数学模型。最后,通过遗传算法来求解建立的优化数学模型。通过计算结果表明,优化后原油电脱水系统需要的药剂费用增大,而电费和燃料费用降低,电脱水系统的年总运行费用从原来的260万元降到了236万元,优化效果比较明显。因此在不改造现有的工艺流程下,通过对运行参数的调整,降低了电脱水系统的运行费用,达到了降低生产成本、节能降耗的目的。
[Abstract]:With the oil field entering the stage of high water cut oil recovery, the water cut of the produced crude oil is also increasing, which leads to the change of energy consumption, operation cost and dehydration efficiency of the electric dehydration system. The main research content of this paper is to study the optimization of operating parameters of crude oil electric dehydration system according to the theoretical knowledge of optimization problem without reforming the existing electric dehydration process, so as to save energy and reduce resource consumption. The purpose of reducing the operating cost of crude oil electric dehydration system. In this paper, the process flow and main operating equipment of electric dehydration system are analyzed and studied firstly, and the main energy consumption equipment of electric dehydration system is determined. Secondly, through the analysis and study of the operation characteristics of the de-pump, the mathematical model of the pump operation is established, and the operating efficiency of the de-pump is optimized. The optimum operating conditions of the pump are obtained. The optimization of the pump parameters is proved to be reasonable and effective by the least square method. Thirdly, considering the operating cost of the electric dehydration system, that is, electricity, fuel and medicament, the objective function of the electric dehydration system of crude oil is established, and the operating voltage and current of the electric dehydrator are selected. The concentration of chemical demulsifier and the outlet temperature of dehydration heating furnace are the optimized variables, which meet the requirements of the state production, such as the water cut of crude oil, the oil content of sewage and the operating conditions of all equipments, etc. An optimal mathematical model of crude oil electric dehydration system is established. Finally, the optimization mathematical model is solved by genetic algorithm. The calculation results show that after optimization, the cost of the crude oil electric dehydration system is increased, while the electricity and fuel costs are reduced, the total annual operating cost of the electric dehydration system is reduced from 2.6 million yuan to 2.36 million yuan, and the optimization effect is obvious. Therefore the operation cost of the electric dehydration system is reduced and the production cost is reduced and the energy saving and consumption is reduced by adjusting the operation parameters without revamping the existing technological process.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE624.1

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