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Study on Separating Naphthenic Acids from Diesel Fuel by Microwave Irradiation

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China petroleum Processing & petrochemical technology 2004年第3期6卷 45-50页

作者： Kong Lingzhao Zhang Zhenhua Li Ping Zhao Shanlin (college of petrochemical technology, {3. , liaoning fushun 113.01) college of petrochemical technology Liaoning Univ. Petrol./Chem. Tech. Liaoning Fushun 113001 China

The microwave technology was introduced to separate naphthenic acids from diesel fuel. Thedecrease of zeta-potential of electric double layer on the W/O interface and the reduction of diesel fuelviscosity were responsible for the accelerated separation of naphthenic acids under microwave *** influences of dosage of alkali compound solvent (Mp/MT), irradiation pressure, irradiation time,irradiation power, the settling time and oil phase-to-solvent phase volume ratio (O/S) had been *** optimum process conditions for the refining process were determined. The removal of naphthenicacids reached 98.4% when the optimum conditions were proposed as follows: Mp/MT=1.5, 0.05MPa, 6 min,3.5W, 25min and O/S=10, respectively. The diesel recovery could reach 99.3. and the quality of thetreated diesel oil was good enough to meet the specification of GB252-2000.

关键词： microwave irradiation diesel fuel oil naphthenic acid

Investigation on Modification of NaY Zeolite and Its Behaviors in Selective Adsorptive Desulfurization of FCC gasoline

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China petroleum Processing & petrochemical technology 2009年第1期11卷 58-62页

作者： Zhu Heli Song Lijuan Gao Xiang Wang Hongguo Zhang Xiaotong Sun Zhaolin (liaoning Key Laboratory of petrochemical engineering, liaoning university of petroleum and chemical technology, fushun 113.01) liaoning Key Laboratory of petrochemical engineering Liaoning University of Petroleum and Chemical Technology Fushun 113001 China

NaY zeolite was modified with oxalic acid, and Ce(IV)Y(1) zeolite was obtained via liquid phase ion exchange between the modified NaY zeolite and cerium nitrate. The Ce(IV)Y(2) zeolite was obtained via liquid phase ion exchange between NaY zeolite and cerium nitrate. The performance of two Y zeolites [Ce(IV)Y(1) and Ce(IV)Y(2)] was compared through static selective adsorptive desulfurization of FCC gasoline at room temperature and normal pressure. The sulfur compounds and contents of the FCC gasoline were analyzed by microcoulometry and GC-SCD chromatogram. The results showed that the effect of adsorptive desulfurization of FCC gasoline achieved by Ce(IV)Y(1) zeolite was better than that of Ce(IV)Y(2) zeolite. The rate for adsorptive desulfurization of FCC gasoline by Ce(IV)Y(1) zeolite and Ce(IV)Y(2) zeolite was 85.0% and 62.4%, respectively. The Ce(IV)Y(1) zeolite could adsorb DMTs, which could not be adsorbed by Ce(IV)Y(2) zeolite. The rate of regeneration of extruded Ce(IV)Y(1)zeolite was 95.5%.

关键词： zeolite ion exchange FCC gasoline adsorptive desulfurization DMTs

Catalytic performance of Pt/HY-β in n-octane hydroisomerization

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petroleum Science 2009年第3期6卷 299-305页

作者： Jin Changlei MA Bo Zhang Xiwen Ling Fengxiang Zhang Zhizhi Qin Bo college of petrochemical engineering Liaoning University of Petroleum and Chemical Technology Fushun Liaoning 113001 China Department of Environmental and chemical engineering Tangshan College Tangshan 063000 Hebei China fushun Research Institute of petroleum and petrochemicals SINOPEC Fushun Liaoning 113001 China

A bifunctional catalyst Pt/HY-β was prepared from a bimicroporous composite zeolite Y-β. Characterization results showed that the specific surface area, pore volume, and acid amount of the catalyst Pt/HY-β all decreased compared to the original zeolite. The catalytic performance of this catalyst in n-octane hydroisomerization was investigated in a fixed bed stainless steel tubular reactor. The results showed that at a hydrogen/n-octane volume ratio of 1000, pressure of 0.6 MPa, temperature of 23. ℃ and LHSV of 3.h^-1, the conversion of n-octane, yield of liquid, hydrocracking rate and yield of iso-octane were 52.3.%, 88.66%, 12.60%, 3..51%, respectively.

关键词： Composite zeolite Pt/HY-β catalyst n-octane hydroisomerization

Study on Modified Y Zeolites and Their Behaviors in Selective Adsorptive Desulfurization of FCC Gasoline (Ⅰ)

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China petroleum Processing & petrochemical technology 2009年第4期11卷 18-22页

作者： Zhu Heli~(1,2) Liu Daosheng~2 Song Lijuan~2 Sun Zhaolin~2 (1.PetroChina Jinxi petrochemical Company,Huludao 125001 2.liaoning Key Laboratory of petrochemical {3.,liaoning university of petroleum and chemical technology) PetroChina Jinxi petrochemical Company Huludao 125001 China liaoning Key Laboratory of petrochemical engineering Liaoning University of Petroleum and Chemical Technology China

NaY zeolite was modified through dealumination with oxalic acid,and the HY zeolite was obtained by calcination of the modified NaY *** zeolite molding process was carried out at ambient temperature(25℃),and the influence of solid/fuel mass ratio and adsorptive desulfurization time on the HY zeolite were investigated through tests on static selective adsorptive desulfurization of FCC gasoline containing organic sulfur compounds(with a S content=13. ppm).The sulfur content and sulphide types in the FCC gasoline were analyzed by a GC 2010 sulfur analyzer and a GC-SCD *** test results showed that the molded HY zeolite was better than the unmolded HY *** a static adsorptive desulfurization time on the molded HY zeolite equating to 6 hours,a solid/fuel mass ratio of 1:3.the sulfur content of FCC gasoline was decreased to 3. ppm,and the desulfurization rate was equal to 78%.When the breakthrough point of the molded HY was equal to 50 ppm,the molded HY zeolite was capable of adsorbing 4.86 mg of sulfur per gram of *** the regeneration rate of molded HY zeolite was equal to 98%.

关键词： dealumination zeolite FCC gasoline adsorptive desulfurization

Synthesis of Modified β-Zeolite Under Microwave Irradiation and Its Use on Etherification

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China petroleum Processing & petrochemical technology 2004年第4期6卷 57-62页

作者： Ma Jun1,2 Wang Haiyan2 Hu Tingfang2 TianYanwen1 Zhou Tong3.Qin Zhiwei3.1 Department of Material and Metallurgy, Northeastern university, Shenyang 110004 2 college of petrochemical {3., liaoning university of petroleum & chemical technology,fushun 113.01 3.PetroChina fushun Ethylene chemical Company Limited, fushun 113.04) Dept. of Material and Metallurgy Northeastern University Shenyang 110004 China college of petrochemical engineering Liaoning U. Petrol./Chem. Technol. Fushun 113001 China P. fushun Ethylene Chem. Co. Ltd. Fushun 113004 China

zeolite was synthesized by using tetraethyl ammonium hydroxide as the template reagent andmicrowave radiation as the heat source. The effect of the sol composition and the radiation temperature onzeolite crystallinity was investigated. The zeolite was tested and compared with the commercial product, whichwas produced by conventional hydrothermal synthesis method. The physico-chemical properties of the syn-thesized samples, the specific surface area of the samples synthesized under microwave irradiation and porevolume measured by X-ray diffraction apparatus, were better than the conventional samples. The etherificationexperiment on FCC light naphtha in the presence of transition metals modified Hβ-zeolite, which was synthe-sized firstly under microwave irradiation, was studied in a fixed-bed reactor. The effect of catalyst preparationconditions on its activity, stability and the effect of reaction temperature, methanol/tertiary-carbon olefin molarratio and liquid hourly space velocity on the etherification reaction were discussed. The experimental resultsshowed that the different metals modified Hβ-zeolite had different etherification performances. And theconversion of tertiary carbon-olefins of the molybdenum modified Hβzeolite, which was loaded at a concen-tration of 3.percents, was higher than that on 6.0 percent of Hβzeolite. The modified Hβzeolite catalystspossessed favorable prospects for its higher stability.

关键词： β-zeolite synthesis microwave irradiation etherification FCC light gasoline silver, molybdenum chromium modification

Adsorption and Desorption of Thiophene Vapor on NaY/NiY Zeolites

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China petroleum Processing & petrochemical technology 2010年第2期12卷 45-50页

作者： Liu Daosheng~(1,2) Song Lijuan~2 Ju Xiufang~2 Duan Linhai~2 Sun Zhaolin~(1,2) (1.college of Chemistry & chemical engineering,China {3. of petroleum(East China),Dongying 257061 2.liaoning Key Laboratory of petrochemical engineering,liaoning Shihua {3.) college of Chemistry and chemical engineering China University of Petroleum (East China) Dongying 257061 China liaoning Key Laboratory of petrochemical engineering Liaoning Shihua University China

FT-IR spectrometry, TPD and adsorption isotherms of thiophene on NaY/NiY zeolites were carried out and the diffusion coefficient was obtained by means of its real-time dynamic curves. The loading of thiophene adsorbed on the NaY zeolite decreased with an increasing temperature, which was ascribed to the patterns of physical adsorption. Both physical and chemical adsorption phenomena were detected on the NiY zeolite, with the 0 complexation and S-M interaction existing during the chemical adsorption. The loading of thiophene adsorbed on the NiY zeolite at 3.2 K and 3.5 K was equal, but it decreased at 3.3.K. The diffusion coefficient of thiophene on the NaY zeolite decreased when the loading increased to more than 0.02 mmol/g, and on the contrary that of thiophene on the NiY zeolite did not change obviously with the loading adsorbed.

关键词： adsorption diffusion coefficient temperature-programmed desorption (TPD)

MULTI-PEAK MATCH INTENSITY RATIO METHOD OF QUANTI-TATIVE X-RAY DIFFRACTION PHASE ANALYSIS

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Acta Metallurgica Sinica(English Letters) 2003年第6期16卷 489-494页

作者： G. Chu, Y.F. Cong and H.J. YouResearch Center of Analysis and Test, liaoning university of petroleum & chemical technology, fushun 113.01, China Res. Ctr. of Analysis and Test Liaoning Univ. of Petrochem. Tehnol. Fushun 113001 China

A new method for quantitative phase analysis is proposed by using X-ray diffraction multi-peak match intensity ratio. This method can obtain the multi-peak match intensity ratio among each phase in the mixture sample by using all diffraction peak data in the mixture sample X-ray diffraction spectrum and combining the relative intensity distribution data of each phase standard peak in JCPDS card to carry on the least square method regression analysis. It is benefit to improve the precision of quantitative phase analysis that the given single line ratio which is usually adopted is taken the place of the multi-peak match intensity ratio and is used in X-ray diffraction quantitative phase analysis of the mixture sample. By analyzing four-group mixture sample, adopting multi-peak match intensity ratio and X-ray diffraction quantitative phase analysis principle of combining the adiabatic and matrix flushing method, it is tested that the experimental results are identical with theory.

关键词： X-ray diffraction multi-peak match intensity ratio quantitative phase analysis

Investigation of ZSM-5/MCM-41 Composite Molecular Sieve for Reducing Olefin Content of FCC Gasoline

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China petroleum Processing & petrochemical technology 2009年第4期11卷 10-17页

作者： Ji Dekun~(1,2) Li Shuyuan~1 Ding Fuchen~2 Chi Yaoling~2 (1.chemical engineering School,China university of {3.(Beijing),Beijing 102249 2.Department of chemical engineering,Beijing Institute of petrochemical technology) chemical engineering School China University of Petroleum (Beijing) Beijing 102249 China Department of chemical engineering Beijing Institute of Petrochemical Technology China

ZSM-5/MCM-41 composite molecular sieve was prepared by the nano-assembling *** ZSM-5 molecular sieve,the MCM-41 molecular sieve,the ZSM-5/MCM-41 mechanical mixture and the ZSM-5/MCM-41 composite molecular sieve were characterized by X-ray powder diffractometry,N_2 adsorption isotherms,temperature programmed desorption of ammonia and scanning electron microscopy and their properties were *** FCC gasoline as the feed,activities of different molecular sieves for reducing olefin content were investigated in a continuous high-pressure micro-reactor unit under the following conditions:a reaction temperature of 400℃,a reaction time of 2 h,a weight hourly space velocity of 3.^(-1),and a reaction pressure of 2.0 *** results showed that the HMCM-41 molecular sieve had low reaction performance,and the HZSM-5 molecular sieve demonstrated high aromatization activity,while the ZSM-5/MCM- 41 composite molecular sieve exhibited a best olefin-reducing performance because of its high isomerization activity and moderate aromatization *** a largest olefin-reducmg capability and a reasonable distribution of products,the composite molecular sieve was more suitable for FCC gasoline upgrading compared to other three catalysts.

关键词： ZSM-5 MCM-41 composite molecular sieve FCC gasoline olefin reduction

Improving Stability of Gasoline by Using Ionic Liquid Catalyst

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China petroleum Processing & petrochemical technology 2003年第2期5卷 57-60页

作者： Gao Zhirong Liu Daosheng Liao Kejian Jian Heng(liaoning university of petroleum & chemical technology, fushun, liaoning {3., China) liaoning Univ. Petrol./Chem. Tech. Fushun Liaoning 113001 China

The composition, characteristics and preparation of ionic liquids are presented. The factors influencing the stability of gasoline and the significance of improving gasoline stability are discussed. A novel way to improve the stability of gasoline by using ionic liquid catalyst is developed. The contents of olefin, basic nitrogen and sulfur in gasoline are determined and the optimal experimental conditions for improving gasoline stability are *** ionic liquid catalyst, which is environmentally friendly, can reduce the olefin content in gasoline, and such process is noted for mild reaction conditions, simple operation, short reaction time, easy recycling of the ionic liquid catalyst and ready separation of products and catalyst.

关键词： ionic liquids FCC gasoline stability olefin basic nitrogen sulfur