摘要
采用AspenPlus化工流程模拟软件对乙苯两段脱氢、乙苯三段脱氢、乙苯脱氢-氧化和乙苯脱氢-氧化-换热4种乙苯脱氢制苯乙烯工艺的流程进行模拟。模拟结果表明,乙苯脱氢-氧化和乙苯脱氢-氧化-换热工艺脱氢过程的蒸汽用量比乙苯两段脱氢工艺降低35%和37%;乙苯脱氢-氧化和乙苯脱氢-氧化-换热工艺由于氢气氧化反应器的存在,尾气中氢气的量较少,尾气压缩机的功耗比乙苯两段脱氢工艺降低38%和67%;乙苯脱氢-氧化工艺和乙苯脱氢-氧化-换热工艺乙苯的单程转化率达到80%以上,循环乙苯量较乙苯两段脱氢工艺大幅降低,因此这两种工艺分离过程的蒸汽用量比乙苯两段脱氢工艺减少15%和17%。
Four processes for ethylbenzene dehydrogenation to styrene including the ethylbenzene two-stage dehydrogenation, ethylbenzene three-stage dehydrogenation, ethylbenzene dehydrogenationoxidation and ethylbenzene dehydrogenation-oxidation-heat exchange processes were simulated by using Aspen Plus software for the sake for providing a guidance of selecting a more economical process in new plant design. The comparison of the processes were mainly directed against traditional ethylbenzene two stage dehydrogenation. The steam consumption of the two dehydrogenation-oxidation processes could be saved by 35% and 37% in comparing with ethylbezene two-stage dehydrogenation process. The installation of hydrogen burning reactor obviously decreased hydrogen in tail-gas. The compressor power consumptions of the two processes therefore decreased 38% and 67%. Single pass conversion of ethylbenzene in both processes reached more than 80%, so the cycling ethylbenzene of both processes decreased substantially. The related steam consumptions of distillation part dropped by 15% and 17%.
出处
《石油化工》
CAS
CSCD
北大核心
2009年第4期412-418,共7页
Petrochemical Technology
基金
国家自然科学基金重点项目(20736011)
教育部创新团队发展计划项目(IRT0721)
关键词
乙苯
苯乙烯
脱氢
氧化
工艺流程
模拟
ethylbenzene
styrene
dehydrogenation
oxidation
technological process
simulation
