熊明林 杨颖 汪昊 游书婷 宋冬寒

【摘  要】优化凝析油净化装置工艺参数，提升凝析油产量对企业降本增效具有重要意义。论文针对苏里格某天然气净化厂一凝析气净化工艺流程，采用HYSYS软件系统探讨了丙烷蒸发制冷单元出口温度，原料气中C6+、nC5H12、iC5H12含量及脱水脱烃单元进口压力对凝析油产量的影响。通过单因素实验筛选了对反应影响较大的因素水平进行响应面优化。结果表明，原料气中C6+含量对凝析油产量影响最大，脱水脱烃单元进口压力对凝析油产量影响最小，推荐了在计算工况下的最佳工艺运行条件为：丙烷蒸发制冷单元出口温度为0.013℃，原料气C6+含量为0.3%，原料气nC5H12含量为0.2%，原料气iC5H12含量为0.199%，为现场凝析油净化装置的高效运行提供了理论指导。

【Abstract】It is of great significance to optimize the process parameters of condensate oil purification device and improve the output of condensate oil for enterprises to reduce cost and increase benefits. Based on the condensate gas purification process of a natural gas purification plant in Sulige， the paper uses the HYSYS software system to discuss the influence of the outlet temperature of the propane evaporation refrigeration unit， the content of C6+， nC5H12， iC5H12 in the feed gas and the inlet pressure of the dehydration and dehydrocarbon unit on the output of condensate oil. Through single factor experiments， the paper screened the factor level that has a greater influence on the response and optimized it with response surface. The results show that the content of C6+ in feed gas has the greatest influence on the condensate oil production， and the inlet pressure of dehydration and dehydrocarbon unit has the least influence on the condensate oil production. The paper recommends the optimal operation conditions under the calculation conditions as follows： the outlet temperature of propane evaporation refrigeration unit is 0.013℃， the content of C6+ in feed gas is 0.3%， the content of nC5H12 in feed gas is 0.2%， and the content of iC5H12 in feed gas is 0.199%. This paper provides theoretical guidance for the efficient operation of on-site condensate oil purification device.

【關键词】凝析油;工艺模型;单因素分析;响应面法

【Keywords】condensate oil; process model; single factor analysis; response surface method

【中图分类号】TE644                                             【文献标志码】A                                                 【文章编号】1673-1069（2021）09-0191-03

1 引言

凝析油是指从凝析气田或者油田伴生气中析出的液相组分，是化工行业重要原材料之一。然而，凝析油的析出条件受多种因素影响，不同条件下凝析油收率波动较大，甚至出现凝析油流失的情况，为生产企业带来较大经济损失[1，2]。通过优化净化装置的运行参数提升凝析油收率，不仅具有可行性，对企业降本增效也具有重要意义。目前，常见的优化设备运行参数的方法有响应面法、量子遗传算法、蚁群算法等。其中，基于数理统计的响应面法具有高效准确，且能具有多目标优化的特点[3]。

由此，本论文以苏里格某天然气净化厂一凝析气净化装置为研究对象，通过建立基于现场工艺的HYSYS模型，深入探讨丙烷蒸发制冷单元出口温度、原料气组成、脱水脱烃单元进口压力对凝析油产量的影响。……