doi:10.16597/j.cnki.issn.1002-154x.2026.01.004
基于差分进化的浮式液化天然气装置液化工艺参数优化
李林威∗ 杨杰 罗国强 王龙龙 薛庆伟
（舟山惠生海洋工程有限公司，舟山 316261）
摘 要液化工艺的选择和优化，直接影响浮式液化天然气(FLNG)装置的运行效率和经济性。采用HYSYS模拟软件对FLNG装置天然气液化工艺进行模拟，以混合制冷剂组分配比为优化对象、单位能耗最小为目标，建立工艺参数优化模型并设定约束条件，利用差分进化算法求解得到最优参数。试验结果表明，优化后液化工艺单位能耗降低0.73 kW·h·kg⁻¹，天然气液化率提升近3%，优化效果良好。
关键词差分进化；浮式液化天然气装置；天然气液化；HYSYS模拟软件；混合制冷剂配比；单位能耗
Optimization of Liquefaction Process Parameters for Floating Liquefied Natural Gas Unit Based on Differential Evolution
LI Linwei∗ YANG Jie LU Guoqiang WANG Longlong XUE Qingwei
(Wison Offshore & Marine Co., Ltd., Zhoushan 316261, China)
Abstract The selection and optimization of liquefaction process directly affect the operational efficiency and economy of floating liquefied natural gas (FLNG) units. HYSYS simulation software is used to simulate the natural gas liquefaction process of FLNG units. Taking the component ratio of mixed refrigerant as the optimization objective and minimizing unit energy consumption as the goal, an optimization model of process parameters is established with corresponding constraint conditions. The differential evolution algorithm is adopted to solve the model and obtain the optimal parameters. The experimental results show that after optimization, the unit energy consumption of the liquefaction process is reduced by 0.73 kW·h·kg⁻¹, and the natural gas liquefaction rate increases by nearly 3%, presenting a favorable optimization effect.
Keywords differential evolution; floating liquefied natural gas unit; natural gas liquefaction; HYSYS simulation software; mixed refrigerant ratio; unit energy consumption