Utilization of cryogenic energy of LNG in ethylene cryogenic separation process

作者：Li, Ya-Jun^*; Yin, Hua

来源：Journal of South China University of Technology(Natural Science Edition), 2009, 37(3): 62-66.

• Compression refrigeration systems
• Cryogenic energies
• Cryogenic energy utilization
• Cryogenic separation
• Direct compression
• Liquefied Natural Gas (LNG)
• Refrigeration load
• Separation process

In the conventional ethylene cryogenic separation process, the compression refrigeration system consumes a lot of cryogenic energy. In order to solve this problem, the cryogenic energy of liquefied natural gas (LNG) is applied to ethylene cryogenic separation process to reduce the compression refrigeration load. Experimental results of a ethylene cryogenic separation system with an annual output of 300 kt/a indicate that the utilization rate of LNG cryogenic energy in the separation process reaches 76.5%, and that LNG provides a cryogenic energy of 22472 kW, which results in a direct compression power saving of 11968 kW and greatly reduces the energy consumption of ethylene cryogenic separation process.

• 出版日期2009-3
• 单位华南理工大学