摘要
针对改良西门子法精馏过程能耗较高的问题,模拟和优化了四氯化硅氢化料精馏过程中脱轻-脱重和脱重-脱轻2种工艺路线,比较2种了工艺路线的综合热负荷。结果表明,在相同进料组成、操作压力、分离要求前提下,脱轻-脱重工艺的综合热负荷明显大于脱重-脱轻工艺的综合热负荷,进料1时高出19%,进料2时高出24%,进料3时高出20.1%,平均高出21%。原因是与脱重-脱轻工艺中脱轻塔相比,脱轻-脱重工艺中脱轻塔需要处理的物料流量大,而且其塔底温度要更高一些,导致后一个塔的总热负荷明显高于前一个塔的总热负荷。
Aiming at reducing the cost of polysilicon distillation process, the process of removing light components after heavy components removal and the process of removing heavy components after light components removal for hydrogenated material distillation are studied. The results show that, under the same feed composition, separation requirements and operating pressure,the comprehensive heat duty of the former process is larger 21% than that of the latter one, which attributes to the larger material flow and higher bottom temperature of the light components removal tower in the former process.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第11期144-147,共4页
Modern Chemical Industry
基金
国家自然科学基金资助项目(51374118)
云南省人才启动经费资助项目(kksy201352109)
关键词
多晶硅
三氯氢硅
精馏
模拟和优化
polysilicon
trichlorosilane
distillation
simulation and optimization
