摘要
在全石脑油原料的乙烯装置上,保持乙烯产量不变,逐步用乙烷替代石脑油。通过分离系统的全流程模拟研究发现,急冷区、压缩区和热区负荷都是降低的,冷箱的氢气和循环乙烷流道、乙烯精馏塔的提馏段首先出现瓶颈,压缩机出现瓶颈的次序是低压甲烷压缩机、甲烷制冷机和乙烯制冷机。替代石脑油不超过10%,可通过调整操作实现;不超过20%,可通过局部改造实现。
In an ethylene plant which only takes naphtha as the cracking feedstock,naphtha was gradually replaced by ethane while maintaining the ethylene output unchanged.Through the whole process simulation of separation system,it was found that the loads in quench area,compression zone and hot zone decreased,and bottlenecks first appeared in the passes of hydrogen and circulating ethane in cold box and the stripping section in ethylene rectifier.For compressors,bottlenecks successively appeared in low pressure methane compressor,methane refrigerator and ethylene refrigerator.Replacing no higher than 10%of the naphtha can be achieved by optimizing the operation,and replacing no higher than 20%of the naphtha can be achieved via partial modification.
作者
赵百仁
王振维
盛在行
李广华
Zhao Bairen;Wang Zhenwei;Sheng Zaihang;Li Guanghua(SINOPEC Engineering Incorporation,Beijing,P.C.100101)
出处
《乙烯工业》
CAS
2023年第2期1-8,I0001,共9页
Ethylene Industry
关键词
乙烷
替代石脑油
分离
瓶颈
ethane
naphtha replacement
separation
bottleneck
