催化裂化和其他非常规工艺生产丙烯技术进展

预计2010年全球丙烯总产能为9680×10^4／a，其中亚太地区所占比例最大，预计2010年亚太地区丙烯产量2426．9×10^5／a，占全球产量的32．4％。2015年全球丙烯总产能将超过1．086×10^5／a。美国2010年丙烯产能达到1160×10^4～1190×10^4t／a。占世界总产能的比例约为12％。由于炼厂构型、地区供需的差异，以及替代生产技术的开发应用，世界轻烯烃生产的影响因素具有很大的区域性特点。丙烯生产工艺开始发生变化，传统的蒸汽裂解工艺在全球丙烯产能中的比例逐步减小，FCC工艺和专用技术所占比例逐步增大，据预测，2015年专用丙烯生产技术所占比例将达到5％～12％。FCC生产丙烯技术和专用丙烯生产技术（包括易位反应、丙烷脱氢、甲醇制烯烃、C4和C5裂化为丙烯技术）工业化开发均取得显著成果。这些技术根据其原料的可获得性和最终产品的市场情况，具有各自的竞争优势。最新的科研活动反映出各种丙烯生产技术之间竞争激烈。FEE增产烯烃工艺开发包括多反应区、双提升管反应器、下行式反应器等和生物基烃共进料技术，以及ZSM-5沸石添加剂的制备与应用。甲醇制烯烃的研发重点是MTO催化剂的合成及其特征描述。研发工作的另一趋势是开发将多种工艺整合在一起的一体化加工处理方案。

Technology Advances in Propylene Production from FCCU and Non-traditional Processes

Worldwide propylene production capacity for 2010 is estimated at 9680×10^4t/a.The Asian-Pacific region is credited with the largest portion of this total,producing a forecast 2426.9×10^4t/a,or 32.4% of the world＇s annual output.Global total propylene production capacity is expected to exceed 1.086×10^4t/a.US propylene production capacity is expected to reach 1160×10^4-1190xl（Pt/a,representing approximately 12% of worldwide capacity.The factors influencing light olefins production are highly regional-specific due to differing refinery configurations ,regional supply and demand trends ,and the presence and/or viability of alternative production technologies.Propylene production methods begin to shift：production from traditional steam cracking is gradually decreasing and that from FCC and on-purpose technologies is rising.Varying market estimates have placed the future contribution of on-purpose propylene to the global supply in the range of 5% 12% by 2015.Significant progress has been made in the commercialization of FCC propylene production technologies and on-purpose propylene production technologies including metathesis,propane dehydrogenation,methanol-to- olefins and technology for cracking C4 and C5 to propylene.Due to the significant differences in processing configurations and feedstocks ,these technologies offer specific advantages depending on the available feedstock and final product market.Recent research endeavors signal keen technology competition.The main trends recognized in the area of FCC processing with enhanced olefins production involve multiple reaction zones,dualriser reactors,downflow reactors,and cofeeding of bio-based hydrocarbons.The preparation and application of ZSM 5 zeolite additive remains a significant area of focus.Methanol-to-olefins R＆D work focuses on the syn- thesis and characterization of MTO catalysts.An additional trend seen in recent research and development work involves integrated processing schemes incorporating a number of the discussed processes.