Method and apparatus for synthesizing of chloromethylether of ethylamine intermediate product
A technology of chloromethyl ethyl ether and synthesis method, which is applied in the directions of ether preparation, organic part exchange to prepare ether, organic chemistry, etc., can solve the problems of high consumption of formaldehyde and ethanol, large amount of outsourcing, environmental pollution, etc., and achieves production cost Low, low consumption, environmental improvement effect
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Embodiment 1
[0029] Embodiment 1 (device required for the synthetic method of acetochlor intermediate chloromethyl ethyl ether)
[0030] As can be seen from Fig. 1, realize the required device of the synthetic method of acetochlor intermediate chloromethyl ethyl ether, this device mainly contains hydrochloric acid gas buffer tank 3, condenser 4, absorption tank 4, A still 1 and B still 2 , the tops of the A kettle 1 and the B kettle 2 are respectively equipped with an injector A1-2 and an injector B 2-2, and the described injector A 1-2 and the injector B 2-2 are respectively connected to the respective kettles through pipelines The top is connected, and the circulating pump C 1-1 of A kettle 1 and the circulating pump D 2-1 of B kettle 2 are connected to the bottom of the respective reaction kettles through pipelines to form a closed-circuit circulation system of A kettle 1 and B kettle 2; hydrochloric acid gas buffer Tank 3 is connected to the bottom pipes of A kettle 1 and B kettle 2 re...
example example 2
[0031] Example example 2: (the synthetic method of acetochlor intermediate chloromethyl ethyl ether of the present invention)
[0032] As can be seen from Fig. 1, according to the molar ratio of paraformaldehyde: ethanol: HCl=1: 1.1: 2, the paraformaldehyde 600kg of 94% by weight is dissolved in the ethanol 1200L (about 950kg) of 95% percentage respectively. The obtained formaldehyde / ethanol solution is pumped into A kettle 1 and B kettle 2 to carry out etherification reaction.
[0033]Open the K1 valve on the pipeline connecting the bottom pipe of A kettle 1 and the HCl gas buffer tank 3, the K3 valve on the pipeline connecting injector A 1-2 on the top of A kettle 1, and connect the injector B 2-2 and A on the B kettle 2 The K5 valve on the pipeline of kettle 1, the K8 valve on the pipeline connecting the top of kettle 2 of B and the top of condenser 4, the valve on the pipeline connecting the bottom of condenser 4 and the top of kettle 2 of B; at the same time, close the in...
example 3
[0040] Example 3: (the synthetic method of acetochlor intermediate chloromethyl ethyl ether of the present invention)
[0041] As can be seen from Fig. 1, according to the molar ratio of paraformaldehyde: ethanol: HCl=1: 1.2: 2.3, the paraformaldehyde 600kg of 94% by weight percentage is dissolved in 95% by weight ethanol 1375L (about 1100kg) respectively, will obtain The formaldehyde / ethanol solution pumped into A kettle 1 and B kettle 2.
[0042] Open the K1 valve on the pipeline connecting the bottom pipe of A kettle 1 and the HCl gas buffer tank 3, the K3 valve on the pipeline connecting injector A 1-2 on the top of A kettle 1, and connect the injector B 2-2 and A on the B kettle 2 The K5 valve on the pipeline of kettle 1, the K8 valve on the pipeline connecting the top of kettle 2 of B and the top of condenser 4, the valve on the pipeline connecting the bottom of condenser 4 and the top of kettle 2 of B; at the same time, close the injector A 1- 2 and the K2 valve on the...
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