阅读说明：本技术 制备甲醇的方法 (Process for the preparation of methanol ) 是由 E·A·贾纳霍夫 L·S·佩德森 M·胡尔特奎斯特 S·G·埃斯克森 L·W·詹森 于 2019-08-28 设计创作，主要内容包括：本发明涉及制备甲醇产品的方法,所述方法包括以下步骤：a)提供基本上由二氧化碳组成的第一工艺料流；b)通过在电解单元中电解水,提供由氢气组成的第二工艺料流；c)以获得具有介于2.5与3.5之间的H2与CO2摩尔比的甲醇合成气的量混合所述第一和第二工艺料流；d)在至少一个甲醇反应器中将所述甲醇合成气催化转化成粗甲醇；e)在蒸馏单元中纯化所述粗甲醇；并且回收在步骤(b)中的所述电解单元中生成的余热,这是通过经由与所述余热间接热交换将所述余热传递至循环传热介质以及通过经加热的传热介质与用于蒸馏所述粗甲醇的蒸汽间接热交换来进行的,其中所述经加热的传递介质在与蒸汽的间接热交换的上游被压缩。(The present invention relates to a process for the preparation of a methanol product, said process comprising the steps of: a) providing a first process stream consisting essentially of carbon dioxide; b) providing a second process stream consisting of hydrogen by electrolyzing water in an electrolysis unit; c) mixing the first and second process streams in an amount to obtain methanol synthesis gas having a molar ratio of H2 to CO2 of between 2.5 and 3.5; d) catalytically converting the methanol synthesis gas to crude methanol in at least one methanol reactor; e) purifying the crude methanol in a distillation unit; and recovering the residual heat generated in the electrolysis unit in step (b) by transferring the residual heat to a circulating heat transfer medium via indirect heat exchange with the residual heat and by indirect heat exchange of the heated heat transfer medium with steam for distilling the crude methanol, wherein the heated heat transfer medium is compressed upstream of the indirect heat exchange with steam.)