研究表明在甲醇低压羰基化法合成乙酸的基础上向反应液中加入原料乙醇和助催化剂碘乙烷,通过改变甲醇和乙醇原料的比例、助催化剂的浓度、乙酸甲酯和乙酸乙酯浓度,可以实现在乙酸羰基化反应器里联产丙酸,以乙酸生产装置50万吨/年负荷进行计算,可以联产丙酸2~2.5万吨/年。 The results showed that ethanol and cocatalyst iodoethane were added to the reaction solution on the basis of acetic acid synthesis by low pressure carbonylation of methanol. By changing the ratio of methanol to ethanol, the concentration of cocatalyst, the concentration of methyl acetate and ethyl acetate, Can be achieved in acetic acid carbonylation reactor co-propionic acid, acetic acid plant 500,000 tons / year load calculation, co-production of propionic acid 2 to 25,000 tons / year.