2012年,我国乙烯工业产能快速增长,装置大型化、炼化一体化程度进一步提升,但开工率有所下降,进口量有所增加,总体走势呈以下三个特点:一是增速加快,乙烯总产能突破1700万吨/年。建设大型化装置、发展规模经济,是国内外乙烯工业实现低成本发展战略的有效途径。统计数据显示,100万吨/年乙烯与50万吨/年乙烯装置相比较,吨成本可降低25%。截至2012年底,我国乙烯新增产能140万吨, In 2012, China’s ethylene industrial production capacity increased rapidly, with large-scale installations and the degree of refinery and chemical integration further improved. However, the operating rate declined and the import volume increased. The overall trend showed the following three characteristics: First, the growth rate was accelerating. Ethylene Total capacity breakthrough 17 million tons / year. The construction of large-scale installations, the development of economies of scale, the ethylene industry at home and abroad to achieve low-cost development strategy an effective way. Statistics show that 1 million tons / year of ethylene can reduce tonne cost by 25% compared with 500,000 tons / year of ethylene. As of the end of 2012, China’s new ethylene capacity 1.4 million tons,