1产能截至2011年年底,世界丁二烯总生产能力已达到约1340万吨/年,同比增长5%。2011年世界丁二烯总产能中,北美占21.8%、亚洲占45.5%,西欧占19.6%、中东欧占7.2%、中南美占2.8%:中东和非洲占3.2%。目前,全世界丁二烯生产能力的97%采用裂解C4混合物抽提工艺,其余采用正丁烷、正丁烯或乙醇脱氢工艺。今后几年,随着中东和亚太地区多套新建或扩建生产装置的建成投产,预计世界丁二烯的生产能力将以年均约2.8%的速度增长。到2013年,全世界丁二烯的总生产能力将增加到约1460万吨/ 1 Capacity As of the end of 2011, the total production capacity of butadiene in the world has reached about 13.4 million tons / year, an increase of 5% over the same period of last year. Of the total world butadiene capacity in 2011, North America accounted for 21.8%, Asia 45.5%, Western Europe 19.6%, Central and Eastern Europe 7.2%, Central and South America 2.8%: Middle East and Africa 3.2%. At present, 97% of the total butadiene production capacity in the world adopts the extraction process of cracking C4 mixture, while the rest adopts n-butane, n-butene or ethanol dehydrogenation process. In the coming years, as more new or expanded production facilities in the Middle East and Asia Pacific are completed and put into production, the world production of butadiene is expected to increase at an average annual rate of about 2.8%. By 2013, the total butadiene production capacity in the world will increase to about 14.6 million tons /