用卧式搅拌釜脱除丁苯胶乳中残留苯乙烯的研究  

MONOMER REMOVAL FROM STYRENE-BUTADIENE LATEX IN A HORIZONTAL AGITATED VESSEL

作　　者：刘海燕[1] 唐福瑞 

机构地区：[1]浙江大学化工系,杭州310022

出　　处：《合成橡胶工业》1990年第3期157-160,共4页China Synthetic Rubber Industry

基　　金：国家自然科学基金

摘　　要：采用投料量350mL的卧式搅拌釜和变形圆板桨,在无挡板的情况下,经32min将丁苯胶乳中残留苯乙烯从3000ppm脱至200ppm时的较佳操作条件为:釜内绝压9.3—12kPa,温度40—50℃,水蒸汽流率6.5mmol/s,搅拌转速430r/min,桨径与釜径比0.86。本体系的脱气动力学模型为:1n(W/W_0)=-kt,式中k约为1.4 ks^(-1)。本工艺与目前的脱气工艺相比,具有操作简便、脱气时间短、起泡和凝聚容易控制等优点。The removal of residual styrene from styrene-butadiene latex was carried out in a 350 mL horizontal agitated vessel without baffle. The unreacted styrene monomer could be reduced from 3000 ppm to 200 ppm in 32 min at the optimum stripping condition: absolute pressure 9.3-12 kPa, steam-flow rate 6.5 mmol/s, agitating speed 430 r/min, and diameter ratio of impeller to vessel 0.86. The dynamic model of the stripping system was given as: ln(W/W0) = - kt. Comparing with the practical stripping process, the described process was convinent, time-saving-and easy to control foam and coagulation.

关 键 词：丁苯胶乳 搅拌釜 脱除 苯乙烯 

分 类 号：TQ331.41[化学工程—橡胶工业]