INTEGRATED PRODUCTION METHOD FOR ACETIC ACID, VINYL ACETATE AND POLYVINYL ALCOHOL

摘要

The present invention relates to an integrated production method for acetic acid, vinyl acetate and polyvinyl alcohol, and, more specifically, relates to an integrated production method for acetic acid, vinyl acetate and polyvinyl alcohol, the method comprising the steps of: (a) producing carbon monoxide by reacting a hydrocarbon and oxygen; (b) purifying the carbon monoxide; (c) producing acetic acid by reacting the carbon monoxide with methanol; (d) purifying the acetic acid; (e) producing vinyl acetate by reacting the acetic acid with oxygen and ethylene; (f) purifying the vinyl acetate; (g) producing polyvinyl acetate by polymerising the vinyl acetate; (h) producing a polyvinyl alcohol and methyl acetate by carrying out a saponification reaction by adding methanol to the polyvinyl acetate; and (i) recovering acetic acid by reacting the methyl acetate with water. According to the present invention, not only can acetic acid, vinyl acetate and polyvinyl alcohol be efficiently produced via a single integrated process, but also steam generated in one step of the integrated process can be used in another step, and thus energy can be recovered both efficiently and economically.