热敏性物质精馏系统中应用复合型塔内件研究

针对热敏性物质在分离过程中因稳定性差造成分离困难的特点,通过对热敏性物质稳定性机理的研究,指出温度和受热时间是影响物质热稳定性的主要因素。开发了适用于热敏性物质精馏系统的复合型塔内件结构,使高效垂直筛板、并流喷射填料塔板和高效填料的各自优势在同一精馏系统中得到集中体现,可使精馏塔的处理能力提高40%,塔底温度降低6℃,塔压降降低4 kPa,从而降低热敏性物质的聚合、分解倾向,解决了困扰热敏性物质分离过程的难题,该技术已实现工业应用,年均增效1 500万元。

Study on application of combination column internals in distillation for heat-sensitive materials

By considering the difficulty in the distillation for heat-sensitive materials,the stability of heat-sensitive materials was studied,pointing out that temperature and heating-time are the important influence factors for heat-sensitive materials.By using combination column internals,including uprightness sieve plate,JCPT tray and packing,the distillation ability increased to 40%,the temperature of tower bottom decreased by 6 ℃,tower pressure drop fell by 4 kPa.So the possibility of polymerization and decomposition is decreased,and the difficulty of distillation for heat-sensitive materials is solved.This technology has been commercialized and can create annual economic benefit of 15 million.