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Study on Crystallization of Titanium Silicalite(Ⅰ)

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China Petroleum Processing & Petrochemical Technology 2008年第4期10卷 19-24页

作者： Lin Min Zhu Bin Shu Xingtian wang xieqing Research Institute of Petroleum Processing Beijing 100083

In order to investigate the rules on preparation of titanium silicalite （TS-1） the ^1H →^13C CP/ MAS NMR spectrometers were applied to track the function of template TPAOH in the process of crystallization of titanium silicalite. The research results revealed that at the initial stage of crystallization the TPA＋ ions acting as the template could predominantly absorb the polymers of negatively charged silicatitania sol and the interactions between silica sol and titania sol could gradually lead to the formation of tiny crystal nuclei that could slowly grow up to form molecular sieves. Upon investigating the course of crystallization of titanium silicalite the ^1H →^13C CP/MAS NMR spectrometers were applied to effectively enhance the resolution of 29Si signals in the titanium silicalite. Study results have shown that during the formation of tiny crystal nuclei upon interaction between titania sol and silica sol the influence of titania sol on the silica sol was insignificant. However, when tiny crystal nuclei broke out into molecular sieves the titania sol could enter the zeolite framework that could apparently impose an enhanced effect on the silica sol.

关键词： titanium silicalite TS-1 hollow titanium silicalite(HTS) crystallization characterization nuclear magnetic resonance

Molecular Simulation of Naphthenic Acid Removal on Acidic Catalyst II. Experimental results of catalytic decarboxylation over acidic catalysts

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China Petroleum Processing & Petrochemical Technology 2008年第2期10卷 29-33页

作者： Fu Xiaoqin Tian Songbai Hou Shuandi Longjun wang xieqing Ningbo Environmental Monitoring Center Ningbo Research Institute of Petroleum Processing Beijing 100083

The energy barriers of thermal decarboxylation reactions of petroleum acids and catalytic decarboxylation reactions of Bronsted acid and Lewis acid were analyzed using molecular simulation technology. Compared with thermal decarboxylation reactions of petroleum acids, the decarboxylation reactions by acid catalysts were easier to occur. The decarboxylaton effect by Lewis acid was better than Bronsted acid. The mechanisms of catalytic decarboxylation over acid catalyst were also verified by experiments on a fixed bed and a fluidized bed, the experimental results showed that the rate of acid removal could reach up to 97% over the acidic catalyst at a temperature above 400℃.

关键词： petroleum acids naphthenic acid catalytic decarboxylation molecular simulation solid acidcatalyst

Synthesis and Characterization of Hollow Titanium Silicalite Zeolite(HTS)

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China Petroleum Processing & Petrochemical Technology 2008年第3期10卷 1-5页

作者： Lin Min Zhu Bin Shu Xingtian wang xieqing Research Institute of Petroleum Processing SINOPEC Beijing 100083 China

29Si-NMR and 1H-NMR were used to follow up the basic hydrolysis of tetraethyl orthosilicate （TOES） and the results showed that species of monomer, dimer, trimer, cyclic and polymer silicates were formed. The monomer and dimer were favorable for the high activity of zeolite. XRD, 13C CP/MAS and 29Si NMR were used to trace the crystallization process of hollow titanium silicalite zeolites （HTS）. The results showed that the induction period of HTS was 80 min, and subsequently it took next 10 min to form HTS and the remaining time of the crystallization period might function for cleaning up the pores and/or washing off the impurities from the HTS zeolite. The catalytic oxidation performance of HTS zeolite is different from that of the acid activity of zeolite in which the conventional definition of crystallinity does not reflect the catalytic oxidation activity proportionally. The synthesized HTS samples were character- ized by XRD, FT-IR, UV-Vis and Raman spectra. It was confirmed that Ti was incorporated into the zeolite framework. The synthesized HTS samples revealed good repeatability and high activity for oxidation of phenol into diphenol.

关键词： titanium silicate zeolite HTS synthesis characterization oxidation

INTELLIGENT INTEGRATION CONTROL OF ROTATING DISK VIBRATION

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Chinese Journal of Mechanical Engineering 2001年第4期14卷 330-335页

作者： Qiu Jinbo,Huang xieqing,wang Daqing (School of Mechanical Engineering, Xi’an Jiaotong University) 西安交通大学陕西

The rotating disk is a basic machine part that is u sed widely in industry. The motion equation is transformed into the dynamic equa tion in real modal space. The personating intelligent integration is introduced to improve the existing control method. These modes that affect the transverse vibration mainly are included to simulate the vibration of rotating disk, and two methods are applied separately on condition that the sensor and the ac tuator are collocated and non collocated. The results obtained by all sided si mulations show that the new method can obtain better control effect, especially when the sensor and the actuator are non collocated.

关键词： Rotating disk Distributed parameter Gyroscopic system Active control Intelligent integration

Oxidative Desulfurization over Molybdenum-containing MCM-41

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China Petroleum Processing & Petrochemical Technology 2009年第3期11卷 39-47页

作者： Xu Li Zhang Wenhao Fan Heli Xie Chaogang wang Danhong Peng Zhien wang xieqing Research Institute of Petroleum Processing Beijing 100083 Department of Materials Chemistry Nankai University Tianjin 300071

Two series of molybdenum-containing MCM-41 catalysts were prepared for oxidative desulfurization ofdibenzothiophene （DBT） using t-butylhydroperoxide （TBHP） as the oxidant. The electronic properties, pore dimension and hydrophilic properties of the catalysts were studied by XRD, BET, and 1R spectrometry. The Mo-Al2O3 catalyst and TiMCM-3% were also studied for comparison. The two series of MCM-41 zeolite with MoO3 in the framework or impregnated on the surface exhibited considerable activities at low MoO3 content and both were faxbetter than the Mo-Al2O3 catalyst, but had lower activities as compared to the TiMCM-3% catalyst. The catalysts with the highest activity were evaluated in a fixed-bed reactor. The concentration of DBT in model diesel upon oxidative desulfurization was successfully reduced from 5000 ppm to less than 150 ppm, but the catalysts were deactivated very fast. The probable reason was the high affinity of DBTO2 to the MCM-41 skeleton, especially to MoO3. The catalysts could restore most of its original activity by treating with alcohol.

关键词： oxidative desulfurization MCM-41 MoO3

A New FCC Process MIP for Production of Clean Gasoline Component

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China Petroleum Processing & Petrochemical Technology 2001年第3期3卷 43-48页

作者： Xu Youhao Zhang Jiushun Long Jun wang xieqing Research Institute of Petroleum Processing Beijing 100083 Research Institute of Petroleum Processing Beijing 100083 Research Institute of Petroleum Processing Beijing 100083 Research Institute of Petroleum Processing Beijing 100083

A concept of two different reaction zones was proposed based on the FCC reaction mechanism,and verified by the experimental results of a fixed fluidized bed reactor. The concept was used to design a novel reactor with corresponding operation measures. Further experiments were conducted on the newly designed pilot scale riser reactor. In comparison with the conventional FCC at relatively equivalent conversion,the pilot test results had shown that the olefin content in the cracked naphtha dropped by 12.4%, and both of iso-paraffin and aromatics increased by 6%, and its MON increased by 1.3 units while maintaining the RON of the naphtha unchanged, and its sulfur content was reduced by 15% with a significant extension of its induction period for Shengli VGO + VR.

关键词： catalytic cracking riser reactor reaction mechanism gasoline stock olefin

Resid Contact Cracking and Coke Gasification Integrated Technology

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China Petroleum Processing & Petrochemical Technology 2021年第1期23卷 48-52页

作者： Li Yanjun Zhang Shuhong Ren Lei Shen Haiping Wu Lei wang xieqing SINOPEC Research Institute of Petroleum Processing Beijing 100083 SINOPEC Engineering Incorporation Beijing 100101

In order to utilize petroleum resources efficiently and greenly,and solve the problems of high coke yield,highsulfur coke utilization,and environmental protection concerns in China’s refineries,a resid contact cracking and coke gasification integrated technology is being developed by the Research Institute of Petroleum Processing(RIPP).Based on the three technical characteristics including thin films cracking,partial oxidation,and rapid cracking,this technology not only can reduce the production rate of coke and dry gas formed during the process,but also can increase the liquid ***,the in-situ low-temperature gasification technology is used to solve the clean utilization of high-sulfur petroleum coke,which can play the role of“Utility Island”and is a green and low-carbon technology for low-quality heavy oil upgrading.

关键词： contact cracking coke gasification green low carbon resid

Comparison on Non-isothermal Oxidation between Spent Catalytic Cracking Catalysts and Coal

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China Petroleum Processing & Petrochemical Technology 2010年第2期12卷 33-40页

作者： Men Xiujie Zhan Shuhong Li Yanjun wang Zijun wang xieqing (Research Institute of Petroleum Processing,SINOPEC,Beijing 100083) SINOPEC Res Inst Petr Proc Beijing 100083 Peoples R China

Oxidation of coke deposited on spent catalytic cracking catalysts was compared with that of coal and coal char via the non-isothermal oxidation means, i.e. the thermal-gravimetric analysis （TGA） and the differential thermal analysis （DTA）. Oxidation kinetic parameters were further investigated by model-fitting methods. The test results showed that the oxidation of spent catalysts was a quite mild process, while coal and coal char experienced sharp weight loss during oxidation. The temperature for commencement and termination of oxidation increased in the following order： coal〈coal char〈spent catalysts, and the oxidation of the three tested materials displayed a self-catalytic nature, with their largest oxidation rate appearing at a weight percent of 24.96%, 34.21% and 57.93%, respectively. The oxidation of spent catalysts obeyed a random nucleation model for the first-order reaction, with Ea=206.13 kJ/mol and lgA=10.10, and the oxidation of coal could be a diffusion-controlled reaction mechanism, with Ea=161.61 kJ/mol and lgA=7.74, while the oxidation of coal char also obeyed a random nucleation model for the first-order reaction, with Ea= 149.36 k J/mol and lgA=7.89.

关键词： spent catalysts coal coal char non-isothermal oxidation TGA oxidation kinetics and mechanism

Study on Crystallization of Titanium Silicalite Zeolite (Ⅱ)

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China Petroleum Processing & Petrochemical Technology 2009年第1期11卷 31-38页

作者： Lin Min Zhu Bin Shu Xingtian wang xieqing (Research Institute of Petroleum Processing, Beijing 100083) Research Institute of Petroleum Processing Beijing 100083 China

In order to investigate the rules on formation of zeolite during crystallization of titanium silicalite zeolite (TS-1) the X-ray diffractometry and Foulier transform infra-red spectrometry were applied to track the process of crystallization of titanium silicalite zeolite. The research results revealed that at the initial stage of crystallization the interactions between silica gel and titania gel in the polymer blend could gradually lead to the formation of tiny crystal nuclei with complicated structure that could slowly grow up to form molecular sieves. Quite different from the conventional zeolites that use the acid sites as the catalytically active centers, the oxidative reactivity of the titanium silicalite zeolite was not proportional to its crystallinity and is associated with the oxidative centers of titanium contained in the zeolite.

关键词： titanium silicalite zeolite TS- 1 hollow titanium silicalite HTS crystallization characterization