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A method of manufacturing a nitrous acid ester, as well as the production method of the oxalic acid dialkyl and dialkyl carbonate
A method of manufacturing a nitrous acid ester, as well as the production method of the oxalic acid dialkyl and dialkyl carbonate
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机译:亚硝酸酯的制造方法以及草酸二烷基酯和碳酸二烷基酯的制造方法
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摘要
A method for producing nitrous acid ester in which nitric oxide, oxygen, and an alcohol are reacted, thereby generating nitrous acid ester includes a step of generating nitrous acid ester by supplying a bottom liquid from a bottom part of the reaction column, and nitric oxide and/or carbon monoxide, a step of supplying nitrous acid ester to the reaction column; a step of supplying a reaction liquid containing water, nitric acid, and the alcohol to a nitric acid condensing column from the reactor; and a step of separating a low-boiling point component by distillation from the reaction liquid under control of a concentration of the alcohol in a condensed liquid being generated at a bottom part of the nitric acid condensing column to be less than 4.0% by weight so as to introduce the condensed liquid into the reactor from the nitric acid condensing column.
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