CAJ | 학술논문

对乙烯生产过程中的主要副产物裂解C_9芳烃的用途简要概括;提出采用连续复合精馏法提取裂解C_9芳烃中的三甲苯馏分,为生产二甲苯歧化反应提供原料,建市连续复合精馏装置,精馏段采用θ环填料结构,提馏段采用泡罩板式结构,研究进料体积流量、塔板数、出料体积流量及回流体积比对分离过程的影响,并采用气质联用色谱分析实验结果.在优化条件下,可以将三甲苯的质量分数由原料中的8.28%提高至22.33%,收率94.37%.同时采用ASPEN PLUS软件对实验进行模拟,实验值与模拟值最大相对平均误差为-0.46%.为进一步放大实验及萃取精馏提取高纯度三甲苯馏分提供依据.
대을희생산과정중적주요부산물렬해C_9방경적용도간요개괄;제출채용련속복합정류법제취렬해C_9방경중적삼갑분류분,위생산이갑분기화반응제공원료,건시련속복합정류장치,정류단채용θ배전료결구,제류단채용포조판식결구,연구진료체적류량、탑판수、출료체적류량급회류체적비대분리과정적영향,병채용기질련용색보분석실험결과.재우화조건하,가이장삼갑분적질량분수유원료중적8.28%제고지22.33%,수솔94.37%.동시채용ASPEN PLUS연건대실험진행모의,실험치여모의치최대상대평균오차위-0.46%.위진일보방대실험급췌취정류제취고순도삼갑분류분제공의거.
The main by-product C_9 arenes in ethylene production was summarized. The continuous and composite distillation method was adopted to refine trimethylbenzen fraction from C_9 arenes, and trimethylbenzen fraction could be used to produce dimethylbenzene. The experimental apparatus for continuous and composite distillation was set up. θ ring-structured packing was used in the rectifying section and bubble cap column was applied in the stripping section. The influences of experimental conditions such as feed volume flow rate, number of column plates, out-feed volume flow rate and reflux volume ratio on the separation process were studied. The experimental results were analyzed by gas chromatograph and mass spectrometer, so the composition and physical property of each substance were received. Under the optimal conditions, the mass fraction of trimethylbenzene is enhanced from 8.28% to 22. 33% , and the yield is 94.37%. At the same time, the separation results were simulated by ASPEN PLUS, and the max. relative mean fractional error between the experiment value and the simulation value is -0.46%. Such result provides the basis for further research and exaction distillation of refining pure trimethylbenzen.