摘要
介绍第三代稀乙烯制乙苯技术中两种不同脱丙烯工艺在流程、丙烯脱除率、物耗以及能耗等方面的对比。一次解析工艺流程相对较简单,设备制造费用较低,能耗较低,丙烯脱除率较低,仅有60.63%,单位乙苯产品的综合物耗相对较高;二次解析工艺流程相对较复杂,设备投资增加,能耗较高,但丙烯脱除率很高,达到99.01%,有利于降低单位乙苯产品的苯耗。以海南实华嘉盛化工有限公司和中国石化青岛炼油化工有限责任公司的乙苯/苯乙烯装置为例进行物耗和能耗对比,一次解析工艺苯耗为0.82 t/t,而二次解析工艺仅为0.75 t/t;一次解析单位产品综合能耗为8.004 MJ/kg,而二次解析为9.968 MJ/kg,一次解析单位产品综合能耗比二次解析低1.964 MJ/kg。
The analysis and comparison of two propylene separation processes in 3rd-generation dilute ethylene to ethyl benzene technology are introduced in respect of process flow, propylene removal rate, materi- al consumption and energy requirement. The primary separation process is simple in process, lower in equip- ment costs and reduced in energy consumption. But the propylene separation rate is lower, which is only 60.63% , and the material consumption per unit of ethyl benzene product is higher. Whereas the secondary separation process is relatively complicated in process flow, increased in equipment costs, higher in energy consumption, but the propylene separation rate is very high, which is 99.01% and favorable for the reduction of energy consumption per unit ethyl benzene product. The comparisons of material and energy consumptions in a case study of benzene/styrene unit in Hainan Shihua Jiasheng Chemical, Co. Ltd. and in SINOPEC Qingdao Refining ＆ Chemical Co. , Ltd. show that： the benzene consumption of primary separation process is 0.82 t/t while that of secondary separation process is 0.75 t/t, the energy consumption per unit product of primary separation process is 8. 004 MJ/kg while that of secondary separation process is 9. 968 MJ/kg, and the energy consumption per unit product of primary separation process is 1. 964 MJ/kg lower than that of sec- ondary separation process.
出处
《炼油技术与工程》
CAS
2013年第1期28-30,共3页
Petroleum Refinery Engineering
关键词
稀乙烯
乙苯
脱丙烯
物耗
耗能
dilute ethylene, ethyl benzene, propylene separation, material consumption, energy consumption
