Production method of high-purity 1,4-butanediol

• Main Authors: LU JUN, LI CHENGMING, CAO XINFENG, LIN TAOHAI, GUAN GANG, SHAN FURONG, DENG JIANKANG, CAO FEIFEI
• Format: Patent
• Language: Chinese; English
• Published: 19.04.2019
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention relates to a production method of high-purity 1,4-butanediol. The production method mainly comprises the working sections of formaldehyde, ethynylation, hydrogenation and product rectification, wherein according to the working section of formaldehyde, raw materials methyl alcohol and air generate formaldehyde under the effect of a catalyst; according to the working section of ethynylation, ethyne and formaldehyde are subjected to an alkynal reaction to generate refined 1,4-butynediol under the effect of a catalyst; according to the working section of hydrogenation, under the certain pressure, 1,4-butynediol and hydrogen from the upstream burner gas purification working section generate crude 1,4-butanediol under the effect of a catalyst; according to the working section of rectification, rectification treatment is performed on the 1,4-butanediol to obtain the high-purity 1,4-butanediol product. After the technology is applied, the product can directly enter the high-end downstream market, expans