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本发明涉及工业合成气高压羰基化生产草酸二甲酯及其加氢生产乙二醇的生产工艺和设备系统。该方法包括以下步骤:使用工业气NO,O_2和甲醇作为原料进行酯化反应制备亚硝酸甲酯;然后使用工业CO和亚硝酸甲酯在板式反应器中羰基化反应以生产主要包括草酸二甲酯和碳酸二甲酯的羰基化产品;分离羰基化产物,获得碳酸二甲酯产品;然后在板式反应器中将草酸二甲酯加氢生产乙二醇
The present invention relates to a high-pressure carbonylation of industrial syngas to produce dimethyl oxalate and its production process and equipment system for the hydrogenation of ethylene glycol. The method comprises the following steps of: esterifying methyl nitrite with industrial gas NO, O 2 and methanol as raw materials to prepare methyl nitrite; and then using industrial CO and methyl nitrite in a plate reactor for carbonylation to produce a mixture comprising mainly dimethyl oxalate Ester and dimethyl carbonate; separating the carbonylation product to obtain a dimethyl carbonate product; and then hydrogenating dimethyl oxalate in a plate reactor to produce ethylene glycol