计算机与应用化学
計算機與應用化學
계산궤여응용화학
COMPUTERS AND APPLIED CHEMISTRY
2015年
2期
231-234
,共4页
甲缩醛%甲醇%分壁塔%萃取精馏%Aspen Plus
甲縮醛%甲醇%分壁塔%萃取精餾%Aspen Plus
갑축철%갑순%분벽탑%췌취정류%Aspen Plus
methylal%methanol%dividing wall column%extractive distillation%Aspen Plus
建立一种利用分壁式萃取精馏塔制取高纯度甲缩醛的新工艺，并用Aspen Plus软件对该工艺进行模拟和优化。最优工艺参数为：主塔塔板数39，隔板底端位置在第31块板，原料进料在第17块板，萃取剂进料在第4块板，回流比为0.9，溶剂比为1.0，气相分配比为0.12。最优参数下的严格模拟结果显示：本工艺可得到质量分数99.96%的甲缩醛和99.24%的甲醇；与常规萃取精馏工艺相比，再沸器和冷凝器热负荷分别降低14.8%和16.9%。说明分壁式萃取精馏塔制取高纯度甲缩醛不仅技术上可行，而且能减少一个塔的投资和节约分离过程的能耗，在经济上也具有显著的优势。
建立一種利用分壁式萃取精餾塔製取高純度甲縮醛的新工藝，併用Aspen Plus軟件對該工藝進行模擬和優化。最優工藝參數為：主塔塔闆數39，隔闆底耑位置在第31塊闆，原料進料在第17塊闆，萃取劑進料在第4塊闆，迴流比為0.9，溶劑比為1.0，氣相分配比為0.12。最優參數下的嚴格模擬結果顯示：本工藝可得到質量分數99.96%的甲縮醛和99.24%的甲醇；與常規萃取精餾工藝相比，再沸器和冷凝器熱負荷分彆降低14.8%和16.9%。說明分壁式萃取精餾塔製取高純度甲縮醛不僅技術上可行，而且能減少一箇塔的投資和節約分離過程的能耗，在經濟上也具有顯著的優勢。
건립일충이용분벽식췌취정류탑제취고순도갑축철적신공예，병용Aspen Plus연건대해공예진행모의화우화。최우공예삼수위：주탑탑판수39，격판저단위치재제31괴판，원료진료재제17괴판，췌취제진료재제4괴판，회류비위0.9，용제비위1.0，기상분배비위0.12。최우삼수하적엄격모의결과현시：본공예가득도질량분수99.96%적갑축철화99.24%적갑순；여상규췌취정류공예상비，재비기화냉응기열부하분별강저14.8%화16.9%。설명분벽식췌취정류탑제취고순도갑축철불부기술상가행，이차능감소일개탑적투자화절약분리과정적능모，재경제상야구유현저적우세。
A novel process of methylal purification by extractive dividing wall column was developed. Simulation and optimization were carried out by Aspen Plus software. The optimized parameters were as fellow: plate number was 39, bottom of dividing wall was placed on 31 stage, feed stage was 17, extractant feed stage was 4, reflux ratio was 0.9, ratio of solvent was 1.0 and vapor split ratio was 0.12. Rigorous simulation results in the optimized parameters showed that 99.96 % methylal and 99.24 % methanol in mass fraction could be obtained by this process. Compared with conventional extractive distillation process, reboiler load saving of extractive dividing wall column was 14.8 % and condenser load saving was 16.9 %. This showed that the methylal purification by extractive dividing wall column is not only feasible in technology,but also has significant economic advantage because of lower capital costs and saving energy.
