Vegetable oil polyol preparation method by using continuous method
A vegetable oil polyol, continuous method technology, applied in the field of preparation of vegetable oil polyol, can solve the problems of non-continuous production, low product quality, long reaction time, etc., and achieve the effect of short reaction time, less pollution, and simple production equipment
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[0025] Example 1:
[0026] Mix 1360.4g of 30wt% hydrogen peroxide (12mol) with 563.63g of formic acid (12mol), add 20.02g (0.2mol) of sulfuric acid and 2.92g (0.01mol) of EDTA, then mix 200g of soybean oil (containing 0.99mol of double bond) and the above The mixed solution was pumped into the micro-channel modular reaction device at the injection rate of 0.2mL / min and 2.1mL / min respectively, and the reaction residence time was kept for 16min. The reaction was carried out in the sandwich reactor HC at normal pressure and 100℃. The product is allowed to stand for liquid separation, and the oil phase is collected with 5% Na 2 CO 3 The aqueous solution is washed to neutrality, and then separated and revolved to obtain vegetable oil polyol with a hydroxyl value of 334 mgKOH / g.
Example Embodiment
[0027] Example 2:
[0028] Mix 1133.67g of 30wt% hydrogen peroxide (10mol) with 603.52g of acetic acid (10mol), then add 12.31g (0.123mol) of sulfuric acid and 11.69g (0.04mol) of EDTA, then mix 200g of cottonseed oil (containing 0.812mol of double bond) with the above The mixed solution was pumped into the micro-channel modular reaction device at injection rates of 0.5 mL / min and 4.5 mL / min, respectively, and the reaction residence time was kept for 8 minutes, and it was carried out in a Haszell alloy micro-channel reactor at normal pressure and 110°C. For reaction, let the reaction product stand for liquid separation, collect the oil phase with 5% Na 2 CO 3 The aqueous solution was washed to neutrality, and then separated and revolved to obtain vegetable oil polyol with a hydroxyl value of 246 mgKOH / g.
Example Embodiment
[0029] Example 3:
[0030] Mix 1700.5g of 30wt% hydrogen peroxide (15mol) with 905.28g of acetic acid (15mol), add 19.83g (0.172mol) of phosphoric acid and 20.46g (0.07mol) of EDTA, and then mix 200g of rapeseed oil (containing 0.785mol of double bond) and The above-mentioned mixed solution was pumped into the microchannel modular reaction device at the injection rate of 0.3mL / min and 3.4mL / min, respectively, and the reaction residence time was maintained for 10min. The reaction was carried out in the sandwich reactor HC at normal pressure and 70℃. The product is allowed to stand for liquid separation, and the oil phase is collected with 5% Na 2 CO 3 The aqueous solution is washed to neutrality, and then separated and revolved to obtain vegetable oil polyol with a hydroxyl value of 265 mgKOH / g.
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