Neopentyl glycol condensation hydrogenation production process and its equipment
A technology for neopentyl glycol and production process, which is applied in the field of neopentyl glycol condensation and hydrogenation production process and its devices, can solve the problems of incomplete separation of high molecular weight impurities, large catalyst activity affected by the outside world, and high reaction temperature and pressure. , to achieve the effect of mild pressure, excellent hydrogenation effect and improved product yield
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[0056] 1. Condensation reaction section
[0057] Such as figure 1 As shown, the molar ratio of isobutyraldehyde, formaldehyde, methanol and water is 1:1.2:0.1:2.8, and the amount of catalyst triethylamine is 0.02 mole per mole of formaldehyde. Put it into the condensation reactor with stirrer, in the first condensation reactor 1, the temperature is 85°C, the pressure is 0.5MPa, in the second condensation reactor 2, the temperature is 90°C, the pressure is 0.5MPa, after the reaction of two condensation reactors A mixed aldol condensation mixture containing hydroxypivalaldehyde is obtained at the bottom of the reaction, and the heat of reaction is removed by a cooler located on the circulation line.
[0058] Table 1 Comparison of components before and after condensation reaction
[0059]
[0060] The aldol condensation mixed mixture is separated from the unreacted isobutyraldehyde, formaldehyde and triethylamine in the condensation circulation tower 3, and the gas phase com...
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