Preparation method of allyl amine mixture
The technology of allylamine and mixture is applied in the field of preparation of allylamine mixture, which can solve the problems of complicated equipment, cumbersome preparation process, long reaction time and the like, and achieves the effects of saving production cost, simple operation and improving purity
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Embodiment 1
[0021] A kind of preparation method of allylamine mixture that the present invention proposes, comprises the following steps:
[0022] S1. Pour the Lewis acid into the reactor, then add 30% ammonia in an amount 15 times the amount of the Lewis acid, raise the reaction temperature to 38°C, and then add allyl chloride to the reactor to carry out the ammonolysis reaction;
[0023] S2. After the ammonolysis reaction in step S1 is completed, keep the temperature at 38°C constant, and after constant temperature for 25 minutes, add liquid caustic soda with a concentration of 40% to the reaction product;
[0024] S3. Perform rectification operation on the reaction product in step S2, remove excess ammonia when the rectification temperature is 38°C, and distill water when the rectification temperature is 102°C;
[0025] S4. When the rectifying temperature in step S3 is 53° C., collect the fraction—allylamine;
[0026] S5. When the rectifying temperature in step S3 is 108° C., collect ...
Embodiment 2
[0030] A kind of preparation method of allylamine mixture that the present invention proposes, comprises the following steps:
[0031] S1. Pour the Lewis acid into the reactor, then add ammonia water with a concentration of 28% that is 13 times the amount of the Lewis acid, raise the reaction temperature to 36°C, and then add allyl chloride to the reactor to carry out the ammonolysis reaction;
[0032] S2. After the ammonolysis reaction in step S1 is completed, keep the temperature of 36°C constant, and after constant temperature for 30min, add liquid caustic soda with a concentration of 42% to the reaction product;
[0033] S3. Perform rectification operation on the reaction product in step S2, remove excess ammonia when the rectification temperature is 36°C, and distill water when the rectification temperature is 100°C;
[0034] S4. When the rectifying temperature in step S3 is 54° C., collect the fraction—allylamine at this time;
[0035] S5. When the rectification tempera...
Embodiment 3
[0039] A kind of preparation method of allylamine mixture that the present invention proposes, comprises the following steps:
[0040] S1. Pour the Lewis acid into the reactor, then add 34% ammonia in an amount that is 17 times the amount of the Lewis acid, raise the reaction temperature to 35° C., then add allyl chloride to the reactor to carry out the ammonolysis reaction;
[0041] S2. After the ammonolysis reaction in step S1 is completed, keep the temperature of 35°C constant, and after constant temperature for 40min, add liquid caustic soda with a concentration of 41% to the reaction product;
[0042] S3. Perform rectification operation on the reaction product in step S2, remove excess ammonia when the rectification temperature is 35°C, and distill water when the rectification temperature is 99°C;
[0043] S4. When the rectification temperature in step S3 is 52° C., collect the fraction—allylamine at this time;
[0044] S5. When the rectifying temperature in step S3 is 1...
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