摘要
概述了国外主流异丁烷脱氢工艺,分析了反应产物分离工艺特点。由于异丁烷脱氢反应产物含有大量的氢气、甲烷、乙烯、丙烯等轻组分,采用精馏分离时,需要较低的温度,因此国外工艺均采用冷箱或低温分离单元。为避免采用冷箱或低温分离单元,在研究中选用了吸收分离方法,开发了一种由吸收塔、解吸塔及脱C4塔组成的吸收分离流程。以10万t/a异丁烷脱氢装置为例,采用C8抽余油作为吸收剂,分析了上述流程的分离效果、公用工程消耗、能耗及操作费用。研究结果表明,吸收分离异丁烷脱氢反应产物,在技术上可行,可以作为国产化异丁烷脱氢工艺技术的一部分。
The isobutane dehydrogenation technologies at home and abroad are overviewed. The separation process characteristics for the reaction products are also analyzed. Because of the large amount of hydrogen,methane,ethylene,propylene and other light components in the reaction product of isobutane dehydrogenation,the low temperature is required for distillation separation. Therefore,the overseas technologies often use cold box or cryogenic separation unit. In order to avoid the use of cold box or cryogenic separation unit,a absorption separation process composed of absorber,desorber and debutanizer is developed. Taking the 100 000 tons/year isobutane dehydrogenation device as an example,the separation effect,utility consumption,energy consumption and operating expenses of the process are analyzed. In this case,the C8 raffinate oil is used as the absorbent. The results show that the absorption separation method is feasible in technology and can be used as a part of the domestic process technology.
出处
《现代化工》
CAS
CSCD
北大核心
2016年第8期142-145,147,共5页
Modern Chemical Industry
关键词
异丁烷脱氢
分离工艺
吸收
isobutane dehydrogenation
separation process
absorption
