Production process of ethyl acetate
An ethyl acetate and production process technology, applied in the field of ethyl acetate production technology, can solve the problems of increasing the energy consumption of a reactive distillation column, reducing the yield and purity of ethyl acetate products, and avoiding waste and improving the purity. , The effect of simplifying the production process
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[0022] Embodiment 1. a kind of production technique of ethyl acetate
[0023] In this example, a tubular pervaporation membrane module is used, in which a self-made tubular composite membrane is used, the dense organic layer is polydimethylsiloxane, the thickness is 8 μm, and the effective membrane area is 12 m 2, the porous support layer (Nanjing Jiusi High-tech Co., Ltd., ceramic microfiltration membrane) has an average pore diameter of 0.5 μm and a thickness of 100 μm. The process conditions were calculated using the chemical process simulation software Aspen Plus. The material of the column body of reactive distillation column 1 is made of special stainless steel 316L, the number of plates is 50, the reflux ratio is 1.7, and the feeding amounts of ethanol, acetic acid and concentrated sulfuric acid are respectively 50kmol / h, 25kmol / h and 1.3mol / h, Feed from the 35th, 5th, and 9th trays, respectively. The raw material was transported to the reactive rectification tower 1,...
Example Embodiment
[0024] Example 2
[0025] In this example, the dense membrane material that preferentially permeates organic matter on the top layer of the composite membrane is polydimethylsiloxane with a thickness of 5 μm; the porous support layer below the top layer (Nanjing Jiusi High-Tech Co., Ltd., ceramic microfiltration membrane) has an average pore size is 0.1μm, the thickness is 50μm, and the effective film area is 5m 2 , other conditions are the same as in Example 1, and the results are basically the same as in Example 1.
Example Embodiment
[0026] Example 3
[0027] In this example, the dense organic layer is polydimethylsiloxane with a thickness of 50 μm, the porous support layer (Nanjing Jiusi High-Tech Co., Ltd., ceramic microfiltration membrane) has an average pore size of 10 μm and a thickness of 1000 μm, and the effective membrane area is 25m 2 , other conditions are the same as in Example 1, and the results are basically the same as in Example 1.
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