A kind of preparation method of 2,2,3,3-tetrafluoropropanol
A technology of tetrafluoropropanol and tetrafluoroethylene, which is applied in the field of preparation of 2,2,3,3-tetrafluoropropanol, can solve the problems of strict requirements for large-scale production equipment, high investment and maintenance costs, and avoid Amplify the effect, improve the utilization rate, and avoid the effect of gas leakage
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[0027] The invention provides a kind of preparation method of 2,2,3,3-tetrafluoropropanol, described preparation method is carried out in microchannel reactor, comprises the following steps:
[0028] (1) methanol is mixed with a free radical initiator to obtain a mixed solution;
[0029] (2) The mixed solution obtained in the step (1) and the tetrafluoroethylene are respectively preheated and then mixed to carry out a polymerization reaction to obtain 2,2,3,3-tetrafluoropropanol.
[0030] The preparation method provided by the invention is carried out in a microchannel reactor. see Figure 5 , specifically, the microchannel reactor comprises a first feed port (1), a second feed port (2), a first preheating module (3), a second preheating module (4), a mixing module, A reaction module, a heat exchanger, and a discharge port, the first feed port (1) is connected to the first preheating module (3) in sequence, and the second feed port (2) is connected to the first Two preheati...
Embodiment 1
[0046] according to figure 1 Shown 2,2,3, the synthetic process flowchart of 3-tetrafluoropropanol, utilize image 3 The device diagram of the microchannel equipment, the device used is a high-throughput microchannel reactor (straight channel module + heart-shaped channel module), refer to Figure 5 The connection mode of the microchannel reactor is determined, the data flow rate and reaction residence time of the mixed reaction module are determined, and the heat conduction medium is silicone oil.
[0047] Store methanol and diisopropyl peroxydicarbonate as a solution in advance in a storage tank, store tetrafluoroethylene in another storage tank, and set the flow rate ratio of the metering pump to diisopropyl peroxydicarbonate:methanol : Tetrafluoroethylene is 38g: 95g: 370g, the materials are respectively passed into the straight channel preheating module, diisopropyl peroxydicarbonate and methanol are preheated at 20°C for 10s, tetrafluoroethylene is preheated at 70°C Fo...
Embodiment 2
[0049] according to figure 1 Shown 2,2,3, the synthetic process flowchart of 3-tetrafluoropropanol, utilize image 3 The device diagram of the microchannel equipment, the device used is a high-throughput microchannel reactor (straight channel module + heart-shaped channel module), refer to Figure 5 The connection mode of the microchannel reactor is determined, the data flow rate and reaction residence time of the mixed reaction module are determined, and the heat conduction medium is silicone oil.
[0050] Store methanol, tert-butyl hydroperoxide and diisopropyl peroxydicarbonate as a solution in advance in a storage tank, store tetrafluoroethylene in another storage tank, and set the flow rate ratio of the metering pump to tert-butyl peroxide. Hydrogen peroxide, diisopropyl dicarbonate: methanol: tetrafluoroethylene is 86g: 164g: 560.7g: 350g, and the materials are respectively passed into the straight channel preheating module, and the temperature of the heat exchanger is ...
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