Research And Exploration On The Synthes Is Of Acetic Acid By Methl Acetate Carbonyl

Acetic acid is one of the most widely used organic acids,which is mainly used in the production of vinyl acetate,polyvinyl alcohol,refined terephthalic acid,and can also produce acetic anhydride,butyl acetate,ethyl acetate,cellulose acetate and acetate.It has a wide range of applications in chemical,synthetic fiber,medicine,light industry and other industrial sectors.The production process of acetic acid with methyl acetate,methanol and CO is mainly studied in the process of acetic acid.The main research mainly aims at the following three aspects:the feasibility of the direct production of the acetic acid technical route by methyl acetate;the influence of the impurity components on the system during the production of the acetic acid by the methyl acetate and the solution;and the economic benefit achieved.The main work is as follows:1.The polyvinyl alcohol by-product acetic acid methyl ester is directly introduced into a reaction kettle for carrying out the reaction of the base-based synthetic acetic acid,the test is divided into three stages,the first stage is the initial stage of the methyl acetate test,the feed of the methyl acetate accounts for 5 percent of the methanol feed,and the second stage is the optimization stage,By modifying the addition of methyl acetate,the feeding amount of methyl acetate is increased to 5.3 t/h,and the load is increased to 81%;and the third stage is the production stage of the production capacity of the device,and the addition amount of the methyl acetate is increased to 15 t/h to reach 100%load of the device.2.The methyl acetate by-product in the process of the polyvinyl alcohol production process contains a trace amount of sodium acetate,The effect of impurities such as PVA powder,VAC,acetone,acetaldehyde and Fe3+ on the production device.Measures such as adding lithium iodide to inhibit side reactions and adding metal ion filtering devices are adopted to eliminate the influence of impurities on the product quality and the production device.3.Economic benefit The production process of acetic acid is synthesized by methyl acetate and methyl acetate,and the polyvinyl alcohol recovery devices 5,6,7,8,12,and the decomposition tower are deactivated,and the yield of acetic acid is increased,and the economic benefit of 770.8 million can be produced each year.