关键词: 乙烷, 乙烯, 出口, 进口, 稳定性, 经济性

Abstract: Compared with traditional naphtha to ethylene, ethane cracking to ethylene has comparative advantages such as a short process flow, a small occupied area, less equipment investment and higher ethylene yield. However, the import ethane to ethylene projects is a complicated systematic project in China. There are still many problems such as stable availability of raw materials and economic benefit, etc. According to the incomplete statistics, total of 15 ethane cracking projects are building and planning in China, 13 of which depend on importing of US ethane resources. This analysis was done from the aspects of ethane resources, domestic demand, exports, export terminal capability of US, shipping capacity, and China's import of ethane for unloading and storage capacity, ethane demand as raw material and other factors influencing import ethane stability. Meanwhile, different oil price situation was set to analyze the economy and competitiveness of cracker plants using import ethane as raw material. The analysis indicated that the uncertainties were remained in multiple links such as exports, export terminal capability and shipping capacity of US, and import of ethane for unloading and storage capacity of China, etc. It was suggested that the National Development and Reform Commission (NDRC) and other industry departments should strengthen the planning guidance, and the enterprises should be rational in their own situations and carried out project feasibility to avoid rushing.

Key words: ethane, ethylene, export, import, stability, economy