各个工序的简述如下：乙醛在催化剂乙醇铝的作用下通过自缩合反应生成乙酸乙

The brief description of each process is as follows: Acetaldehyde generates ethyl acetate through self-condensation reaction under the action of the catalyst aluminum ethoxide, and then adds excess water to the single-effect evaporator to destroy the catalyst aluminum ethoxide, and then passes through the evaporator to remove the generated ethyl acetate. Aluminum hydroxide. Then pass through three rectification towers of acetaldehyde removal tower, ethanol removal tower and heavy component removal tower in turn to remove acetaldehyde, ethanol and acetal in crude ethyl acetate respectively, and finally at the top of the heavy component rectification tower Obtain a relatively pure ethyl acetate product. Figure 1 is a simplified process flow diagram of the production of ethyl acetate by acetaldehyde condensation.

The summary of each process is as follows: acetaldehyde in the action of the catalyst ethanol aluminum by self-shrinking reaction to produce ethyl acetate, and then add excess water to the single-effect evaporator to destroy the catalyst ethanol aluminum, and then through the evaporator removal of the resulting aluminum hydroxide. Then through the deacetaldehyde tower, deethanol tower and decombinant sub-tower three distillation towers, respectively, the removal of acetaldehyde, ethanol and acetaldehyde in the coarse acetic acid, and finally in the decombinant fractional tower top to obtain a purer ethyl acetate products. Figure 1 is a brief diagram of the process for the legal production of ethyl acetate in acetaldehyde.

The brief description of each process is as follows: Acetaldehyde generates ethyl acetate through self condensation reaction under the action of catalyst aluminum ethoxide, and then excess water is added into the single effect evaporator to destroy the catalyst aluminum ethoxide, and the aluminum hydroxide generated is removed through the evaporator. Then, acetaldehyde, ethanol and Acetal in crude ethyl acetate were removed by three distillation columns, namely, deacetaldehyde column, dealcoholic column and de heavy component column. Finally, a relatively pure ethyl acetate product was obtained at the top of the de heavy component distillation column. Fig. 1 is the process flow diagram of ethyl acetate production by acetaldehyde condensation.<br>