Method for continuously producing pinane by pinene and device therefor
A production method and technology of pinene are applied in the field of continuous production of pinene to prepare pinane and its device field, which can solve the problem that automation control is difficult, the cis-trans ratio of pinane is difficult to control, only one month, and the longest is no more than 1 month. About 3 months and other problems, to achieve the effect of convenient large-scale production and scale-up, high cis-pinane selectivity, and improvement of human operation deviation
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[0029] Example 1 Example of a continuous production device for preparing pinane from pinene of the present invention
[0030] Reference figure 1 , The embodiment of the continuous production device for pinene preparation of the invention consists of raw material storage tank 1, feeding pump 2, flow meter I3, liquid preheater 4, hydrogen storage tank 5, hydrogen compressor 6, hydrogen circulation compressor 7. Flow meter Ⅱ 8, hydrogen preheater 9, gas-liquid mixer 10, fixed-bed reactor 11, cooler 12, gas-liquid separator 13, product storage tank 14 composition; raw material storage tank 1 outlet and feeding pump 2 inlet The outlet of the feeding pump 2 is connected with the inlet of the flow meter I 3, the outlet of the flow meter I 3 is connected with the inlet of the liquid preheater 4, the outlet of the liquid preheater 4 is connected with the inlet of the gas-liquid mixer 10, and the outlet of the hydrogen storage tank 5 is connected with hydrogen compression The outlet of th...
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[0032] Example 2 Example of the operation steps of the continuous production method of p-pinene prepared from pinene
[0033] (1) First, load 200kg~1000kg of catalyst into the fixed bed reactor 11, replace the air with nitrogen; open the heating jacket of the fixed bed reactor 11, and preheat the fixed bed reactor 11 to 120℃~300℃; turn on the hydrogen Compressor 6, to 800 m 3 / h ~1000 m 3 / h (standard state meter) hydrogen flow rate is sent to the hydrogen preheater 9, the hydrogen is preheated to 50 ℃ ~ 260 ℃, and the feeding pump 2 is turned on at the same time, the raw pinene stored in the raw material storage tank 1 is reduced to 0.1 m 3 / h ~0.5 m 3 / h, sent to the liquid preheater 4, preheat the pinene to 80℃~290℃, and then put the preheated hydrogen and pinene in the gas-liquid mixer 10 to control the gas-liquid volume ratio as 1600~10000, after mixing uniformly, enter the fixed bed reactor 11, complete the hydrogenation reaction under the conditions of temperature 120℃~300...
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[0039] Examples 3~6
[0040] Control the hydrogenation reaction temperature at 50℃, set the catalyst addition amount 200kg, 500kg, 800kg, 1000kg respectively, hydrogen preheat temperature 40℃~50℃, pinene preheat temperature 40℃~50℃; gas-liquid volume ratio is 1600, 5000, 7000, 9000, 10000, hydrogenation reaction pressure is 10 Mpa, 13 Mpa, 16 Mpa, 20 Mpa. When the reaction conditions are stable, the content of pinane in the hydrogenated product is 90.5%, 93.1%, 96.2%, 98%, respectively, and the conversion rate of pinene hydrogenation to pinane reaches 98.1%, 99.2%, 99.5%, 99.9%.
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