Sichuan University of Science & Engineering

www.suse.edu.cn
Zigong, China
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Lian Y.H.,Sichuan University of Science & Engineering | Hu Z.,Sichuan University of Science & Engineering
Petroleum Science and Technology | Year: 2017

Acids in FCC diesel is harmful to production equipments, storage, and transportation facilities. The complex deacidification process was adopted to remove acid from diesel using 2-methylimidazole and ammonia. The effect of all process parameters on removing acid from diesel was discussed, which included reaction temperature, mass ratio of complex deacidification agents, reaction time, and volume ratio of complex deacidification agents to diesel. Orthogonal experiments were done to optimize deacidification process on the basis of single factor experiments. The results showed that the optimum deacidification process was that volume ratio of complex deacidification agents to diesel was 0.20:1, reaction time was 12 min, mass ratio of 2-methylimidazole to ammonia was 0.4:1 and reaction temperature was 343 K. Under this condition, the deacidification rate reached 96.5%. This deacidification process had little effect on other physical and chemical properties of diesel. © 2017 Taylor & Francis Group, LLC.


Hu Z.,Sichuan University of Science & Engineering | Yu H.L.,Sichuan University of Science & Engineering
Petroleum Science and Technology | Year: 2017

The basic nitrogen compounds (BNC) in diesel affect the storage equipments and performance of diesel. In this study, a ternary complex denitrification agent including aluminum chloride hexahydrate, methanol, and hydrochloric acid was used to remove BNC. The effects of all process parameters on removing BNC were reviewed systematically. The results showed that the optimum denitrification process was that ratio of aluminum chloride hexahydrate to methanol to hydrochloric acid was 0.09 g:20 mL:2.5 mL, mass ratio of denitrification agents to diesel was 0.5, reaction time was 3 min, reaction temperature was 35°C, and resting time was 15 min. Under the optimum condition, the denitrification rate reached 97.2% and the recovery rate was 96.5%. The denitrification process had a little effect on other physicochemical properties of diesel. © 2017 Taylor & Francis Group, LLC.


Li Y.-D.,Sichuan University of Science & Engineering | Yang Y.-R.,Southwest Jiaotong University
Jisuan Lixue Xuebao/Chinese Journal of Computational Mechanics | Year: 2017

In this paper, the period motion of the Mathieu-Duffing oscillator is investigated by the homo-topy analysis method. The procedures of the solution of the period-1 and period-2 are presented. The period solutions are obtained by solving the nonlinear algebraic equations. Stability of the period motion is judged by the Floquet theory. The phase portraits of period solution obtained by the homotopy analysis method agree well with those obtained by the numerical time-integration method. © 2017, Editorial Office of Chinese Journal of Computational Mechanics. All right reserved.


Li Y.-D.,Sichuan University of Science & Engineering | Yang Y.-R.,Southwest Jiaotong University
Nonlinear Dynamics | Year: 2017

The nonlinear governing motion equation of slightly curved pipe with conveying pulsating fluid is set up by Hamilton’s principle. The motion equation is discretized into a set of low dimensional system of nonlinear ordinary differential equations by the Galerkin method. Linear analysis of system is performed upon this set of equations. The effect of amplitude of initial deflection and flow velocity on linear dynamic of system is analyzed. Curves of the resonance responses about (Formula presented.) and (Formula presented.) are performed by means of the pseudo-arclength continuation technique. The global nonlinear dynamic of system is analyzed by establishing the bifurcation diagrams. The dynamical behaviors are identified by the phase diagram and Poincare maps. The periodic motion, chaotic motion and quasi-periodic motion are found in this system. © 2017 Springer Science+Business Media Dordrecht


Zeng S.-L.,Sichuan University of Science & Engineering | Zhang H.-L.,China Mobile
Energy Procedia | Year: 2011

This paper put forward a method to promote low-carbon development of electric power industry in China from the perspective of benchmarking circular economy efficiency of coal-fired power plants. The input-output index system that reflects reducing, reusing and recycling carbon dioxide, waste and pollution emissions for measuring the circular economy efficiency of coal-fired power plants is set up. With the survey data of 24 coal-fired power plants, the superefficiency data envelopment analysis (DEA) model is applied to ranking and improving the circular economy efficiency of these plants. and the benchmarking is carried out using the aforesaid DEA model. The benchmarking procedure proposed in this paper can be used to choose the best efficiency benchmark of circular economy in the environmental management of power plants and enhance the low-carbon development of coal-fired power industry. © 2011 Published by Elsevier Ltd.


Yu X.-P.,Sichuan University of Science & Engineering | Zhang F.-B.,Zhonghao Chenguang Research Institute of Chemical Industry Co.
Journal of Molecular Catalysis | Year: 2015

The Ni/MgAlO and NiRu/MgAlO catalysts were prepared by calcined reconstruction method for the dry reforming of methane. X-ray diffraction, temperature programmed reduction of hydrogen, thermogravimetric analysis, X-ray photoelectron spectroscopy, temperature-programmed desorption of carbon dioxide and transmission electron microscopy were used to investigate the structure and deactivation characteristics of the catalysts. The introduction of Ru into the Ni/MgAlO increased the surface Ni content and facilitated the reduction of Ni2+ species. The 7Ni-0.15Ru/Mg2.5Al catalyst possessed the higher catalytic activity, which was ascibed to the optimum basicity, high surface active metal content and small metal particles of the catalysts. The introduction of Ru into Ni/MgAlO catalyst significantly suppressed the formation of filamentous coke. The 7Ni-0.15Ru/Mg2.5Al catalyst exhibited strong resistance to coke formation, which was closely related to its small Ni0 particles and optimum basicity. © 2015, Science Press. All right reserved.


Tang L.,Sichuan University of Science & Engineering
International Journal of Multimedia and Ubiquitous Engineering | Year: 2016

In the paper a weighted Projection onto to convex sets (POCS) algorithm for image super-resolution reconstruction is proposed, which using POCS scheme to reconstruct image without knowing the degradation model and related parameters. In the proposed algorithm, adaptive block matching is utilized to estimate translational motion among various images firstly, and then APRX algorithm is adopted to estimate the point spread function (PSF) and the ideal high resolution image. Finally based on the traditional POCS algorithm, the paper introduced the prior information about low resolution image definition into POCS to calculate the residual and control the threshold by weighted parameter of image relative definition, and realized the dynamic threshold selection in the whole progress of reconstruction. Results of experiments show that the algorithm in the objective evaluation and visual effects achieves better reconstruction results, which confirm the validity and robustness of the proposed algorithm. © 2016 SERSC.


Tang L.,Sichuan University of Science & Engineering
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2014

The cultivation of practical ability relates to students’ employment and further education, scientific and reasonable practical teaching system can develop students’ practical ability and interest in learning. This paper analyzes the current problems of the experimental teaching, builds a multi-level and openpractice teaching system. It also puts forward some professional practice teaching reforms through strengthening laboratory team building and improving the development of laboratory building, which are propitious to cultivate innovative talents. © Sila Science. All rights reserved.


Chen C.,Sichuan University of Science & Engineering
International Journal of Theoretical Physics | Year: 2016

We propose an efficient preparation of photonic four-qubit entangled decoherence-free states assisted by the cavity-QED system. By using the optical selection rule derived by a single electron charged self-assembled GaAs/InAs quantum dot in a micropillar resonator, two photons are used to generate four-qubit entangled decoherence-free states. Compared with previous entanglement based photonic protocols, the present one requires single-photon resources and is deterministic. These states may be applied to long-distance communications because only two photons are transmitted. © 2016 Springer Science+Business Media New York


Zhang X.,Sichuan University of Science & Engineering
Future Communication, Information and Computer Science - Proceedings of the International Conference on Future Communication, Information and Computer Science, FCICS 2014 | Year: 2015

In the current physical (PE) education teaching, low teaching efficiency and physical fitness of students are the main problems, which were investigated in the work. Results show reforming the teaching mode and exploring new teaching methods actively can stimulate the students’ interest for physical exercise and improve the teaching skills of physical training. The innovation of this study is that the information, standardization and psychologization training mode has been introduced to physical education. Therefore, the teaching effect can be intuitively understood, and the corresponding training plans can be adjusted timely. © 2015 Taylor & Francis Group, London.

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