The distillation of methanol is a high energy consumption task through methanol production process. In order to reduce such energy consumption, a novel technology of three-column triple-effect methanol distillation was developed, simulated and analyzed by PRO/Ⅱ process simulation software. The appropriate operating parameters (the washing water flow rate of the light ends column was 8000 kg/h, the reflux ratio of the atmospheric column was 1.64, the fusel oil side-draw stage of the atmospheric column was 53^rd, the top operating pressure of the pressurized column was 735 K Pa and the flow rate of methanol produced by pressurized column and atmospheric column were 53.96% and 46.04%, respectively) were achieved. The results show that the energy consumption of three-column triple-effect methanol distillation scheme was decreased by 20.91% compared to the three-column double-effect methanol distillation. The novel technology has been successfully applied in industrial methanol production and the results demonstrate that this developed technology would have promising future applications due to its low energy consumption.

甲醇的蒸馏是通过甲醇生产过程的高能耗任务。为了减少这种能源消耗，开发了一种新的三塔三效甲醇蒸馏新技术，并通过PRO /Ⅱ过程模拟软件进行了模拟和分析。适当的操作参数（轻馏分塔的洗涤水的流速为8000公斤/小时，大气塔的回流比为1.64，大气塔的杂醇油侧取阶段为53^次，加压塔的最高工作压力为735 K Pa，加压塔和常压塔产生的甲醇流量分别达到53.96％和46.04％。结果表明，与三柱双效甲醇精馏相比，三柱三效甲醇精馏方案的能耗降低了20.91％。该新技术已成功应用于工业甲醇生产中，结果表明，由于其低能耗，该开发的技术将在未来具有广阔的应用前景。