Methanol-to-gasoline (MTG) process is an important modern technology for fuel production. As a process featured in redundant heat, with reaction temperature sometimes up to 380℃, so far MTG heat integration has not been discussed in detail to make MTG an electricity generator. This paper, in this context, proposes a novel superstructure of the integration of methanol-to-gasoline (MTG) process with organic Rankine cycle (ORC) in the hope of higher energy efficiency. To simultaneously optimize the flowsheet structural, the working fluid and operating condition of the novel superstructure of ORC-MTG integrated process, genetic algorithm (GA) is performed based on economic criteria through MATLAB coupled with Aspen Plus. With Propylbenzene-R601 the most favorable working fluid pairs in ORC. Compared with the current industrial counterpart process, the optimal ORC-MTG integrated process saves cooling water by 18.77% with the ROI at 22.66%. The thermal efficiency of 18.3% is valuable for the industrial application, which suggests the significance of introducing ORC to other heat-rich industrial plants requiring higher energy efficiency, especially in the case of expensive electricity.

甲醇制汽油（MTG）工艺是一种重要的现代燃料生产技术。作为一种具有余热的工艺，反应温度有时会高达380℃，到目前为止，尚未详细讨论MTG的热集成以使MTG成为发电机。在此背景下，本文提出了甲醇制汽油（MTG）工艺与有机朗肯循环（ORC）集成的新型上层结构，以期实现更高的能源效率。为了同时优化ORC-MTG集成过程的新型上部结构的流程结构，工作流体和工作条件，基于经济标准，通过MATLAB与Aspen Plus结合使用了遗传算法（GA）。使用丙苯R601，是ORC中最有利的工作液对。与目前的工业对应流程相比，最佳的ORC-MTG集成工艺可节省18.77％的冷却水，而ROI为22.66％。18.3％的热效率对于工业应用是有价值的，这表明将ORC引入到其他需要更高能源效率的富热工业工厂中的重要性，特别是在昂贵的电力情况下。