Method for producing ethanol by hydrogenation of acetic acid
A technology of ethyl acetate and ethanol, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as high material requirements, high investment costs, and unqualified products
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[0060] The following examples are illustrative descriptions of the present invention in more detail, but the present invention is not limited to these examples. In this embodiment, the specific flow chart is shown in the attachment figure 1 shown.
[0061] First, preheat the acetic acid raw material, return material and hydrogen to form a steam feed stream, and introduce the steam feed stream into the reactor R101 equipped with a gas-phase hydrogenation catalyst. The catalyst for the gas-phase hydrogenation of acetic acid is produced by Beijing Research Institute of Chemical Industry acetic acid hydrogenation catalyst, the catalyst contains: (1) cobalt, wherein the cobalt metal content accounts for 18wt% of the total catalyst weight; (2) molybdenum and tin account for 3wt% and 34wt% of the total catalyst weight; (3) boron and Bismuth accounts for 2wt% and 5wt% of the total catalyst weight respectively, and the balance is silicon dioxide. The catalyst is prepared by ball mill...
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