摘要
剖析了4种丁二烯溶液聚合的传热方式,指出,直接加冷物料传热将加大后处理的负荷,对降低能耗不利;夹套及釜内冷却面传热,装置设计简单,操作方便,但存在传热与混合相互影响及聚合釜长期运行后传热面结垢等问题;对于蒸汽釜外回流冷凝传热,只要控制好单体汽化和保证聚合釜汽化空间不存在汽化单体聚合,就可在较宽的操作范围内控制反应温度;液体釜外循环传热不仅增加了操作参数,而且解决了夹套传热受混合影响的问题,但要尽量避免流动不均一分布及结垢的影响,随着适合高粘度体系的换热器及泵的开发,该传热方式将得到广泛应用。
Four heat transfer schemes on solution polymerization of butadiene were considered. The heat transfer by feeding cold materials directly would increase the work of butadiene and solvent recovery and was unsuitable for decreasing the enery. consumption. The heat removal by cooling jacket and coils was simple to design and operate, but it was interacted by mixing and heat transfer, and fouling in jacket and coils by long-term operation. The autorefrigeration permited a broadrange of temperature control with reflux of the condensed vapor .Heat transfer by external pump-recirculation loop not only provided the most robust temperature control with an additional control parameter , but also avoided the issue of interdependence of mixing and heat transfer on heat removal by cooling jacket and coils .
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1993年第4期234-237,共4页
China Synthetic Rubber Industry
关键词
传热
丁二烯
溶液聚合
顺丁橡胶
heat transfer
butadiene
solution polymerization
polymerization reaction equipment