A new process for the joint production of dimethylhexynediol and diacetone alcohol
A technology of dimethyl hexynediol and diacetone alcohol is applied in the preparation of carbon-based compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc. The effect of device utilization and market adaptability, increasing the added value of device products, and reducing fixed investment and production costs
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Embodiment 1
[0027]1.00mol of methyl butynol, 1.50mol of acetone, 1.20mol of potassium isobutoxide, and 4.75mol of xylene were reacted in a reactor for 6h at a reaction temperature of 30°C; Hydrolyze, so that the alkali enters the water phase and separates the oil phase, the hydrolysis temperature is 45 ° C, and the hydrolysis time is 0.6 h; the oil phase is washed with water to further remove the residual alkali in the oil, the amount of water is 0.18 times the mass of the reaction solution, and the washing temperature is 45 ° C , the washing time is 0.5h, the alkali content of the oil phase is 0.08wt%, and the water after the oil phase is washed is used for the hydrolysis of the reaction solution; the oil phase is neutralized with sulfuric acid / phosphoric acid mixed acid, and the stable pH value is about 6; In addition to acetone and methyl butynol, the tower kettle enters the dealcoholization tower to remove isobutanol and water, the butanolized oil enters the debenzene tower to remove x...
Embodiment 2
[0030] 1.00mol of methyl butynol, 2.00mol of acetone, 1.45mol of potassium isobutoxide, and 3.25mol of xylene were reacted in a reactor for 8 hours at a reaction temperature of 20° C.; then adding washing water (0.38 times the mass of the reaction solution) to terminate the reaction and Hydrolyze, so that the alkali enters the water phase and separates the oil phase. The hydrolysis temperature is 45°C, and the hydrolysis time is 0.5h; the oil phase is washed with water to further remove the residual alkali in the oil. The amount of water is 0.36 times the mass of the reaction solution, and the washing temperature is 45°C. , the washing time is 0.35h, the alkali content of the oil phase is 0.04wt%, and the water is used for hydrolysis of the reaction solution after the oil phase is washed; In addition to acetone and methyl butynol, the tower kettle enters the dealcoholization tower to remove isobutanol and water, the butanolized oil enters the debenzene tower to remove xylene, t...
Embodiment 3
[0033] 1.00 mol of methyl butynol, 3.00 mol of acetone, 2.05 mol of potassium hydroxide, and 5.85 mol of cyclohexane were reacted in the reactor for 4.5 hours at a reaction temperature of 40°C; then adding washing water (0.27 times the mass of the reaction solution) to terminate the reaction And hydrolyze, so that the alkali enters the water phase and separates the oil phase, the hydrolysis temperature is 50 ° C, and the hydrolysis time is 0.4 h; the oil phase is washed with water to further remove the residual alkali in the oil. The amount of water is 0.26 times the mass of the reaction solution. ℃, water washing time 0.4h, the alkali content of the oil phase is 0.06wt%, the water after the oil phase is washed is used for the hydrolysis of the reaction solution; the oil phase is neutralized with a phosphoric acid / ammonium phosphate mixture, and the stable pH value is about 6; the oil phase is passed through the light removal tower Remove acetone, remove cyclohexane and water t...
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