摘要
Since the production cost of biodiesel is now the main hurdle limiting their applicability in some areas, catalytic cracking reactions represent an alternative route to utilization of vegetable oils and animal fats. Hence, catalytic transformation of oils and fats was carried out in a laboratory-scale two-stage riser fluid catalytic cracking （TSRFCC） unit in this work. The results show that oils and fats can be used as FCC feed singly or co-feeding with vacuum gas oil （VGO）, which can give high yield （by mass）of liquefied petroleum gas （LPG）, C2-C4 oletms, tor example 45% LPG, 47% C2-C4 olefins, and 77.6% total liquid yield produced with palm oil cracking. Co-feeding with VGO gives a high yield of LPG （39.1%） and propylene （18.1%）. And oxygen element content is very low （about 0.5%） in liquid products, hence, oxygen is removed in the form of H2O, CO and CO2. At the same time, high concentration of aromatics （C7-C9 aromatics predominantly） in the gasoline fraction is obtained after TSRFCC reaction of palm oil, as a result of large amount of hydrogen-transfer, cyclization and aromatization reactions, Additionally, most of properties of produced gasoline and diesel oil fuel meet the requirements of national standards, containing little sulfur. So TSRFCC technology is thought to be an alternative processing technology leading to production of clean fuels and light olefins.
因为简历柴油机的生产费用现在是在一些区域限制他们的适用性的主要障碍，催化裂化反应代表一条其他的线路到植物油和动物脂的利用。因此，油和脂肪的催化转变在实验室规模被执行二阶段的起床人液体催化裂开(TSRFCC ) 在这个工作联合起来。上油的结果表演和脂肪能被用作 FCC 单身地喂或与真空瓦斯油( VGO )共同喂，它能给高产率(由质量)液化石油气体( LPG )， C2-C4 石蜡，例如45% LPG ，47% C2-C4 石蜡，并且与 VGO 与棕榈油 喂cracking.Co 生产的77.6%全部的液体产品产率给 LPG (39.1%)和丙烯(18.1%)的高产率。并且氧元素内容是很低的(大约0.5%)在液体产品，，因此氧在 H2O ，公司和 CO2.At 形式被移开一样的时间， aromatics 的高集中( C7-C9 aromatics 主要)在棕榈油的 TSRFCC 反应以后在汽油馏分被获得，由于大量氢转移，环合和芳构化反应。另外，大多数生产汽油和柴油的性质满足国家标准的要求，包含很少硫。TSRFCC 技术因此被认为是处理导致干净燃料和轻石蜡的生产的技术的一种选择。
基金
the Major Research Plan of PetroChina Company Limited (07-03D-01-01-02-02)
