Research Of Green Technology For Production Of Diallyamine

To avoid the disadvantages of traditional technology for producing diallylamine,such as low atomic economy,many side reactions,high material cost,poor selectivity of product and a lot of waste water,a reactive distillation process was proposed to produce diallylamine,with allyl chloride and ammonia as raw materials and methanol but not water as solvent,the ammoxidation reaction happens under pressurized condition,a greener process was obtained.The side reactions were reduced in the methanol solvent and the productivity of diallylamine was enhanced,the by-product ammonium chloride left the system as solid and waste water was avoided.Based on the experimental data,the proposed process was simulated and optimized with Aspen Plus.The factors that influence the reaction were explored with single-factor experimen-ts,then the orthogonal experiments were carried to find the optimal condition.i.e.Re-action temperature being 110 ℃,reaction time being 1 h,reaction pressure being 2 atm,mass ratio of allyl chloride and methanol being 1:5.Under the optimal condition,th-e conversion of allyl chloride is 99.35%,the selectivity of diallylamine is about 80%,and the mass concentration of ammonia chloride in the solid yields is 97.12%.To enhance the measurement accuracy for the product,a derivatization reaction of allylamine was proposed,and the composition of allylamines were calculated accordi-ng to the detection result of the concentration of the derivatives measured by HPLC.Based on the lab experimental results,the process was proposed and optimized with Aspen Plus,and the optimal operating parameters were obtained.