Production equipment and production method of ethyl acetate

Abstract

The invention discloses production equipment and a production method of ethyl acetate. The production equipment comprises a separation and reaction tank consisting of an upper circular truncated cone section, a cylindrical section and a lower circular truncated cone section, a catalyst isolator is arranged in the separation and reaction tank, and a plurality of tangentially fed feeding nozzle pipes and a plurality of tangentially fed circulating reaction fluid inlets are arranged on the outer wall of the cylindrical section; a gas collecting and separating pipe is arranged at the top of the upper circular truncated cone section and is respectively connected with a water vapor collecting device and an acetaldehyde vapor return pipe through different tangential outlets; a collecting pipe is arranged at the bottom of the lower circular truncated cone section, tangential outlets in different positions of the collecting pipe are respectively connected with an ethyl acetate collecting device, a sediment collecting device and a circulating reaction fluid collecting device, and an acetaldehyde steam return pipe is connected with the separation and reaction tank through the circulating reaction fluid collecting device. According to the production method of the equipment, water and byproducts can be discharged out of the separation and reaction tank, the concentration of the catalyst is increased, the reaction rate is increased, acetaldehyde can be preheated by utilizing reaction heat, and the cold consumption is reduced, so that the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a production equipment for producing ethyl acetate by using acetaldehyde and a production method for ethyl acetate using the equipment. Background technique [0002] Ethyl acetate is a commonly used basic chemical raw material and is widely used in the chemical industry. The earliest synthetic method is to use concentrated sulfuric acid to catalyze the reaction of acetic acid and ethanol. However, this method has serious corrosion on equipment, low yield, many by-products, and relatively difficult product purification. To this end, people have successively developed ① phosphomolybdic acid catalyzed acetic acid ethanol synthesis method, ② ethanol dehydrogenation oxidation method, ③ vinyl acetate addition method, ④ triethanol aluminum catalyzed acetaldehyde production method. Among them, ① the catalyst is expensive and prone to failure, ②, ③ the reaction tem...

AI Technical Summary

Problems solved by technology

Ethanol, another raw material of aluminum triethoxide, also has a large loss of ethanol and ethyl acetate because ethanol is easily soluble in water when aluminum triethoxide is destroyed by hydrolysis.

Ethanol and water remaining in the organic phase of ethyl acetate also increase the difficulty of ethyl acetate distillation and purification and affect the yield of ethyl acetate

In addition, acetaldehyde, the production raw material of ④, is chemically active and has a low boiling point (20.8°C). Currently, the reaction temperature for producing ethyl acetate from acetaldehyde is below 20°C, which is lower than room temperature. It is necessary to cool both the raw material and the Heat of reaction (conversely, heat of reaction can be utilized if it is above room temperature), so a large amount of "cooling" is consumed

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