摘要:
A method and system is provided for producing acetic acid by the catalytic carbonylation of methanol with carbon monoxide to obtain a reaction product stream comprising acetic acid and a minor amount of acetaldehyde. The acetaldehyde content in the reaction product stream is reduced by oxidation to convert at least a portion of the acetaldehyde in the stream to acetic acid or further to CO2 and H2O. The oxidized stream may then be directed to the purification section, the reaction section, or both whereby the deleterious effects of acetaldehyde are reduced. Advantage of the present invention over conventional processes is the reduced need to dispose of acetaldehyde as waste and improved overall system efficiency in the production of acetic acid.
摘要翻译:提供了通过甲醇与一氧化碳的催化羰基化生产乙酸的方法和系统,以获得包含乙酸和少量乙醛的反应产物流。 通过氧化还原反应产物流中的乙醛含量,将至少一部分乙醛转化为乙酸或进一步转化为CO 2和H 2 O. 然后将氧化物流引导至纯化部分,反应部分或二者,由此降低乙醛的有害作用。 本发明优于常规方法的优点是减少了将乙醛作为废物处理的需要,并提高了乙酸生产中的整体系统效率。