Continuous production method of bromochlorohydantoin
A kind of technology of bromochlorohydantoin and production method, applied in the field of continuous production of bromochlorohydantoin, can solve the problems of cumbersome production steps and high production costs, and achieve the effects of reducing production costs, hidden dangers of production safety, and reducing production steps
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Embodiment 1
[0028] Embodiment 1: a kind of bromochlorohydantoin continuous production method comprises the following steps:
[0029] 1. Add acetone cyanohydrin and water respectively into the enamel mixing tank for mixing to obtain a mixture of acetone cyanohydrin and water;
[0030] 2. Put the steam into the jacket of the tower reactor, pass the carbon dioxide and ammonia gas from the bottom of the tower reactor, and the mixed solution of acetone cyanohydrin and water enter from the top of the reactor, so that the gas phase is highly dispersed in the liquid phase To carry out the reaction, after the quantitative addition of acetone cyanohydrin, the circulation pump is used to circulate the middle and top of the tower for 2 hours, and the material flows into the synthetic enamel reaction kettle from the bottom of the tower. Among them, the molar ratio of acetone cyanohydrin, carbon dioxide and ammonia is 1:2.5:1.2.
[0031] Steam was introduced into the jacket of the synthetic enamel rea...
Embodiment 2
[0037] 1. Add acetone cyanohydrin and water respectively into the enamel mixing tank for mixing to obtain a mixture of acetone cyanohydrin and water;
[0038] 2. Put the steam into the jacket of the tower reactor, pass the carbon dioxide and ammonia gas from the bottom of the tower reactor, and the mixed solution of acetone cyanohydrin and water enter from the top of the reactor, so that the gas phase is highly dispersed in the liquid phase To carry out the reaction, after the quantitative addition of acetone cyanohydrin, the circulation pump is used to circulate the middle and top of the tower for 2 hours, and the material flows into the synthetic enamel reaction kettle from the bottom of the tower. Wherein, the molar ratio of acetone cyanohydrin, carbon dioxide and ammonia is 1:3.5:2.0.
[0039] Steam was introduced into the jacket of the synthetic enamel reaction kettle, and the reaction temperature of the materials was controlled at 80° C. for 4 hours. After the reaction, ...
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