CAJ | 학술논문

建立了带多台侧反应器的间歇反应精馏过程，采用Aspen Plus模拟软件构建该过程的非稳态模拟方法。以甲苯氯化生产氯化苄为对象，研究了侧反应器台数、侧线采出率和采出位置、氯气分配、反应精馏时间及再沸器蒸发量等设计参数对间歇反应精馏过程的影响规律。模拟结果表明反应能力和分离达到最佳匹配的最优设计参数为：精馏塔塔板数8块、侧反应器2台、氯气分配7：3、从第3块塔板侧线采出、采出率85%、再沸器蒸发量25 kmol?h?1。在此结构参数和操作条件下完成50 kmol甲苯氯化所需时间为9 h，甲苯的转化率和氯化苄的选择性均可达到98.0%以上。
건립료대다태측반응기적간헐반응정류과정，채용Aspen Plus모의연건구건해과정적비은태모의방법。이갑분록화생산록화변위대상，연구료측반응기태수、측선채출솔화채출위치、록기분배、반응정류시간급재비기증발량등설계삼수대간헐반응정류과정적영향규률。모의결과표명반응능력화분리체도최가필배적최우설계삼수위：정류탑탑판수8괴、측반응기2태、록기분배7：3、종제3괴탑판측선채출、채출솔85%、재비기증발량25 kmol?h?1。재차결구삼수화조작조건하완성50 kmol갑분록화소수시간위9 h，갑분적전화솔화록화변적선택성균가체도98.0%이상。
A batch distillation column coupled with multiple side reactors was established to produce benzyl chloride through toluene chlorination, and its unsteady state process was simulated using Aspen Plus. The influences of reactor number, extraction ratio, extraction position, chlorine distribution, distillation time and boil-up ratio on the performance of batch reactive distillation were investigated. The simulation results indicate that the best match between reaction and separation can be achieved, and the optimal parameters are as follows: column tray 8, side reactor number 2, chlorine distribution 7:3, 85% of the liquid flow extracted from the 3 rd stage into the 2nd reactor and boil-up ratio 25 kmol?h?1. Under the optimum conditions, 50 kmol toluene can be converted to benzyl chloride in 9 h with both conversion and selectivity up to 98.0%.