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1. A Process Modeling of Bio-oil production By Fast Pyrolysis In Aspen Plus | |||
Wang Gaoen,Sun Peiqin | |||
Chemical Engineering 02 July 2014 | |||
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Abstract:This study develop a novel models for assessment of the conversion of biomass to valuable fuel products via fast pyrolysis. The simulation includes the pretreatment of the biomass, the pyrolysis reactor, and a combustion reactor. Simulating the each part of the process with the capacity of 2000t/d corn stover, the results show that energy consumption for the whole process is 468.73×109J/h and the generated energy is 531.6×109J/h,which means that energy generated was greater than the energy consumption; the energy consumption of product 1kg bio-oil is equivalent to 0.75883kg standard coal, while the energy generation was 0.8606kg standard coal. | |||
TO cite this article:Wang Gaoen,Sun Peiqin. A Process Modeling of Bio-oil production By Fast Pyrolysis In Aspen Plus[OL].[ 2 July 2014] http://en.paper.edu.cn/en_releasepaper/content/4603129 |
2. Effect of the rare earth elements on the structure and catalytic oxidative desulfurization activities of phosphomolybdic acid loaded on silica | |||
QIU Jianghua,WANG Guanghui,WANG Ning | |||
Chemical Engineering 10 June 2014 | |||
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Abstract:The catalysts of phosphomolybdic acid loaded on silica and modified with La3+, Ce3+ and Pr3+ respectively were prepared by the sol-gel method and characterized by FT-IR, XRD and pore structure parameters analysis. The oxidative desulfurization of model fuel oil catalyzed by the catalysts have been studied under the mild condition. Results show that the catalysts kept integrity Keggin structures, the active centers of phosphomolybdic acid were greatly scattered and the pore size and specific surface area were increased obviously after modification. The catalytic oxidative reactions of dibenzothiophene (DBT) were accorded with the apparent first-order kinetics, and the apparent activation energies of DBT catalyzed by La-Mo/SiO2, Ce-Mo/SiO2 and Pr-Mo/SiO2 were 30.29 kJ/mol, 33.41 kJ/mol and 35.15 kJ/mol, respectively. | |||
TO cite this article:QIU Jianghua,WANG Guanghui,WANG Ning. Effect of the rare earth elements on the structure and catalytic oxidative desulfurization activities of phosphomolybdic acid loaded on silica[J]. |
3. Fabrication of Hierarchical Porous ZnO and its Application Performance in Ni/ZnO Reactive-Adsorption Desulfurization Process | |||
TIAN Shuang,LIU Yunqi,ZHANG Ke,LIU Chenguang | |||
Chemical Engineering 19 February 2012 | |||
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Abstract:To better understand the nature of reactive adsorption of FCC gasoline on Ni/ZnO adsorbent, the effect of ZnO textural structure on the desulfurization activity were investigated. Hierarchical rod-shaped ZnO was synthesized by solvothermal and thermal descomposition methods. The ZnO material possessed not only macropores but also mesopores. The mesopores might be formed by the aggregation of nanoclusters and the macropores be formed by the aggregation of microrods. The corresponding Ni/ZnO adsobents were prepared by incipient impregnation method. The analysis results showed that both the crystalline sizes and the texture structure of the synthesized ZnO were better than that of commercial ZnO. Compared with commercial ZnO-based Ni/ZnO absorbent, hierarchical porous ZnO-based Ni/ZnO absorbent possesses higher desulfurization performance, which can be attributed to its possession with higher diffusion effect and special surface area. | |||
TO cite this article:TIAN Shuang,LIU Yunqi,ZHANG Ke, et al. Fabrication of Hierarchical Porous ZnO and its Application Performance in Ni/ZnO Reactive-Adsorption Desulfurization Process[OL].[19 February 2012] http://en.paper.edu.cn/en_releasepaper/content/4467239 |
4. Catalytic Oxidative Desulfurization of Diesel Fuel Catalyzed by Quaternary Ammonium Phosphomolybdate | |||
Jianghua Qiu,Guanghui Wang,Danlin Zeng | |||
Chemical Engineering 07 September 2009 | |||
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Abstract:Phosphomolybdic acid mixed with hexadecyl trimethyl ammonium chloride as the catalyst was prepared and evaluated for the oxidative desulfurization of straight-run diesel using hydrogen peroxide as an oxidant. Results of the FT-IR and SEM analyses indicated that the catalyst keeps the entire Keggin structure of phosphomolybdic acid. The catalyst can oxidize the sulfur-containing molecules into sulfones with desulfurization rate of 84.6% and diesel recovery rate of 98.1% in 2 h. Orthogonal test and single factor analysis showed that the catalyst dosage, hydrogen peroxide dosage, reaction temperature and reaction time are the main influential factors for oxidative desulfurization, and the influential factors order is: reaction time > reaction temperature > hydrogen peroxide dosage > catalyst dosage. Increasing extraction times, the desulfurization rates increased, but the recovery rates of diesel declined notably. The proposed catalytic oxidative mechanism of organosulfur compounds contains two steps, the active center Mo(Ⅵ) attacked by hydrogen peroxide catalyzes sulfide to form sulfoxide and subsequent oxidation of sulfoxide to produce sulfone. | |||
TO cite this article:Jianghua Qiu,Guanghui Wang,Danlin Zeng. Catalytic Oxidative Desulfurization of Diesel Fuel Catalyzed by Quaternary Ammonium Phosphomolybdate [J]. |
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