液化石油气生产高辛烷值汽油调合组分的研究和应用

利用改性HZSM-5分子筛催化剂,在反应温度280～400℃、反应空速0.25～0.50 h~(-1)和反应压力0.2～0.5 MPa条件下可将液化石油气转化为高辛烷值汽油调合组分。工业试验表明,该技术催化剂和工艺用于催化裂化醚后C_4生产高辛烷值汽油调合组分是可行的。     

Fluid catalytic cracking technology for maximum gasoline production

Increasing gasoline production in FCC unit can improve the utilization efficiency of petroleum resources and gain economic benefit.This paper discusses the technical principles for increasing FCC gasoline yield from the aspects of feedstock properties,operating conditions,LCO(light cycle oil)recycling,catalyst selection and reactor type,and illustrates the industrial application examples for maximizing gasoline production.The technical measures,such as optimizing the feedstock,properly increasing the catalyst activity and reaction temperature,recycling LCO or hydrotreated LCO,applying high gasoline yield catalyst,and adopting the two-zone riser reactor,are proposed to enhance the gasoline yield.     

重整C_9~+重芳烃调合高辛烷值汽油

介绍了某催化重整工艺C_9~+重芳烃的组成和利用现状,可用于生产轻质苯产品、精细化工产品以及高辛烷值汽油。催化重整工艺C_9~+重芳烃具有高辛烷值,研究法辛烷值(RON)可达100以上,并且几乎不含烯烃、硫、氮及其化合物等有害杂质,可作为非常理想的高辛烷值汽油调合组分。列举了几个当前石化行业采用C_9~+重芳烃进行高辛烷值汽油生产的实例,进一步证明C_9~+重芳烃作为高辛烷值汽油调合组分的可行性。     

Kazakhstan crude oils as sources of feedstock for asphalt production

The results of a study of the physicochemical properties of West Kazakhstan crudes — from the Karaturun, Karsak, and Kara-Arna fields — are reported. The possibility of using these crudes for asphalt production is demonstrated. __________ Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 3, pp. 34–36, May–June, 2008.     

汽油+芳烃型重整装置原料组分的优化

在石脑油原料过剩的情况下,针对汽油+芳烃型重整装置开展了原料组分优化的研究。通过对预加氢精制油和加氢裂化石脑油各个馏分段的族组成进行分析,模拟测算各馏分段在重整反应过程中的变化,提出应将在重整反应过程中对辛烷值增加贡献最大的石脑油组分作为重整原料。装置试验结果表明,将加氢裂化石脑油120~140℃的馏分由调合汽油改为作重整原料,预加氢精制油初馏点提高至80℃,终馏点降低至169℃,可在装置加工负荷不变的情况下,每月增加效益320万元。     

动植物油与普通催化原料催化裂解反应的对比

提出了以动植物油催化裂解多产丙烯的技术路线,并与普通催化原料的两段提升管催化裂解路线进行了对比。结果表明,棕榈油是一种优良的催化裂解多产丙烯的原料。一段反应后,液化气质量分数超过40%,丙烯质量分数为20.16%,达到大庆常压渣油两段提升管催化裂解的水平;汽油质量分数和总液收率较高;生成的汽油中芳烃质量分数超过51%,可以作为高辛烷值汽油的调和组分。     

动植物油在催化裂化装置上的掺炼应用

在实验室及工业规模的两段提升管催化裂化装置上,以胜华减压蜡油(VGO)为主要裂化原料,进行了可再生动植物油的掺炼裂化反应研究.结果表明,与胜华VGO单一裂化相比,掺炼质量分数为22.3%的动植物油后,液化气(LPG)收率上升了0.45个百分点,LPG中丙烯的质量分数提高了1.88个百分点,汽油收率保持不变;同时,裂化所得稳定汽油的诱导期至少上升28.2%,胶质下降了30.4%,烯烃体积分数下降了11.1%,含硫质量分数下降了25.0%;裂化所得轻柴油的闪点升高了9.9%,冷滤点下降了71.4%,残炭质量分数降低了59.1%,含水质量分数下降了83.3%,含硫质量分数降低了18.5%.     

Catalytic dewaxing in production of base oils

The higher requirements for the performance characteristics of lubricants and the intensifying competitive struggle of these products on the world market are making it necessary to assimilate new technologies which would allow deliberately altering the composition of base oils as soon as possible. Translated fromKhimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 23–25, January – February, 2000.     

Highly effective ionic liquids for biodiesel production from waste vegetable oils

As conventional energy sources deplete, the need for developing alternative energy resources which are environment friendly becomes more imperative. Vegetable oils are attracting increased interest in this purpose. The methanolysis of vegetable oil to produce a fatty acid methyl ester (FAME, i.e., biodiesel fuel) was catalyzed by commercial ionic liquid and its chloride modification. The imidazolium chloride ionic liquid was frequently chosen for the synthesis of biodiesel. The dual-functionalized’ ionic liquid is prepared by a direct combination reaction between imidazolium cation and various metal chlorides such as CoCl2, CuCl2, NiCl2, FeCl3 and AlCl3. Imidazolium tetrachloroferrate was proved to be a selective catalyst for the methanolysis reaction at a yield of 97% when used at 1:10, catalyst: oil ratio for 8 h at 55 °C. Operational simplicity, reusability of the used catalyst for 8 times at least, high yields and no saponification are the key features of this methodology. The dynamic viscosity and density of the upgraded vegetable oil decreased from 32.1 cP and 0.9227 g/cm³ to 10.2 cP and 0.9044 g/cm³ respectively, compared to those of the base vegetable oil. The objective of this study was the synthesis and characterization of biodiesel using commercial ionic liquid and its chloride modification. The ionic liquid catalysts were characterized using FTIR, Raman spectroscopy, DSC, TG and UV.     

大庆石化分公司乙烯装置裂解原料与裂解方案优化

根据大庆地区裂解原料供应的特点,重点阐述大庆石化分公司乙烯装置原料优化的方向,同时结合各种裂解炉特点提出了优化的裂解方案。