T Cheng Shuo L Paper 1.5 Production Status and Analysis of Wujing Our company's ethyl acetate is our main product. The trial operation of 65438 10 was successful at the beginning of October. The reaction raw materials of this process route are urea and methanol, both of which are bulk chemical raw materials with low price.
At present, the production of ethyl acetate adopts traditional production technology, with concentrated sulfuric acid as catalyst, which has the disadvantage of low conversion rate. A method for preparing 2- alkylene 4- bromoacetoacetate; Synthesis of ethyl γ-bromobutyrate.
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Compared with the prior art, the synthetic route shortens the reaction steps, reduces the production cost and is suitable for large-scale industrialization. Ethyl acetate is the largest import in China at present.
Although the capacity of domestic mechanical and chemical products is relatively large, most of them are packaged.
And the applicability with the prior art, etc. So far.
Did not realize industrialization.
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2.2
Condensation of acetaldehyde in aluminum ethoxide. Foreign countries make use of the rich advantages of isoprene raw materials and adopt this method for industrial production, which has certain production costs.
And achieved phased research results. The technical route developed by domestic scientific research institutions is the oxidation of isobutyraldehyde to isobutyric acid, but the last one. I. Production Technology and Its Progress
At present,
The industrial production methods of ethyl acetate mainly include:
Acetic acid esterification
Acetaldehyde condensation.
It is highly corrosive and belongs to the internationally eliminated process route.
(2)
Acetaldehyde condensation method
The existence of aluminum ethoxide in the catalyst.