System and method for large-scale preparation of ethylene glycol from synthesis gas
A technology for the synthesis of ethylene glycol, which is applied in the preparation of hydroxyl compounds, organic compounds, carbon monoxide or formate reaction preparation, etc., which can solve the problems of low qualification rate of ethylene glycol products, large number of device series, and large project investment and other problems, to achieve the effect of reducing the steam consumption of ethylene glycol rectification and separation, reducing the project investment, and reducing the project investment
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[0066] The embodiments of the present invention will be described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention. Detailed implementation modes and specific operation procedures are given, but the protection scope of the present invention is not limited to the following implementations. example.
[0067] Such as figure 1 As shown, this embodiment includes an esterification process, a carbonylation process, a carbonylation synthesis gas separation process, a dimethyl oxalate separation process, a hydrogenation process, an ethylene glycol distillation process, an ethylene glycol purification process, and a waste liquid treatment process. , Exhaust gas treatment process, the above processes and main equipment are single series and single unit, realizing the large-scale synthesis of ethylene glycol from syngas.
[0068] The specific steps for preparing ethylene glycol are as follows:
[0069] (1) Esterification process:...
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