Synthesize of Maleic Acid Derivatives and their Gelation Ability
Zhou Zhe, Sun Jianfeng, Yu Haiyang， Yu Fang, Lai Junling, Luo Genxiang
2014, 34 (5): 1-3,14. DOI:10.3696/j.issn.1672-6952.2014.05.001
Abstract ( ) PDF ( 1694KB ) ( ) 　　
Lowmolecularmass organic gelator (LMOG) Noctadecyl succinic acid was synthesized from succinic anhydride and octadecylamine by ringopen reaction. The structure of gelator was confirmed by 1HNMR and 13CNMR. The gelation ability was inspected by a typical experiment including heatingcooling to form gel and inverting the test tube without deformation of the gel. The results indicate that the Noctadecylcotadecylamine can form the oreticalorganogels in different organic solvents. The selfassemble in the organogel was studied and a preliminary gelation mechanism was proposed.
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Intensifying Distillation of Crude Oil by LWS201 Additive and Its Industrial Application
Song Guanlong, Zhang Guowei, Gong Jianyuan, Zhao Dezhi
2014, 34 (5): 4-6. DOI:10.3696/j.issn.1672-6952.2014.05.002
Abstract ( ) PDF ( 1178KB ) ( ) 　　
Using selfdeveloped LSW201 additive, the effects of intensifying distillation on Oman crude oil were determined at different concentrations by simple distillation．After using LSW201 additives in vacuum distillation devices of Luoyang petrochemical refinery, LWS201 1# additive was very good. The experimental and industrial results show that LSW201 additive for crude oil distillation has a good strengthening effect, the best mass fraction of additive is 100～120 μg/g.
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Preparation of IC Level Karamay SBS Modified Asphalt
Xu Lei， Huang Wei， Cong Yufeng， Zhang Chunxue， Liu Zhijun
2014, 34 (5): 7-10. DOI:10.3696/j.issn.1672-6952.2014.05.003
Abstract ( ) PDF ( 1756KB ) ( ) 　　
Karamay SBS modified asphalt was prepared to meet the requirements of the specifications for SBS (IC) asphalt by adding hard asphalt, petroleum resin and additives. The effects of hard asphalt, petroleum resin and additives on the softening point, penetration and storage stability of SBS modified asphalt were investigated. When the dosage of modifier SBS, hard asphalt, petroleum resin and the additives were 5%, 3%, 3%, and 2% respectively, SBS modified Karamay asphalt's softening point was 55.6 ℃, the penetration was 60.7 (0.1 mm), ductility at 5 ℃ was 31.2 cm, and the difference of softening point from the top and the bottom of storage tube was 1.2 after 48 h of storage at 163 ℃.The properties of said modified asphalt met the requirements of the specifications for SBS (IC) asphalt.
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Green Synthesis of Methyl Oleate Catalyzed by H3PWl2O40/Yβ
Cheng Yun,Yang Ying,Luo Genxiang
2014, 34 (5): 11-14. DOI:10.3696/j.issn.1672-6952.2014.05.004
Abstract ( ) PDF ( 1785KB ) ( ) 　　
The esterification of oleic acid with methanol catalyzed by Yβ composite zeolite supported phosphotungstic acid( H3PWl 2O4 0/ Y - β) was reported. The effect of catalyst amount， the ratio of methanol to oleic acid, reaction time, catalyst recycling times on the yield of methyl oleate were carefully studied. The result show that the catalyst had many advantages such as high catalytic activity, easy to recycle and good reusability. The yield of methyl oleate reached 94.7% under the following optimum reaction conditions: 0.1 mol oleic acid, the ratio of methanol to oleic acid 1.8，1.2 g catalyst, reaction time 90 min.
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The Effect of the Measuring on Sulfur Content of Catalytic Diesel Fuel with MicroCoulometry
Zhang Xu， Yang Lina， Dong Jiali， Li Jian
2014, 34 (5): 15-18. DOI:10.3696/j.issn.1672-6952.2014.05.005
Abstract ( ) PDF ( 1495KB ) ( ) 　　
The mass fraction of sulfur contained in the catalytic diesel was determined by microcoulometry measurement, the effects of the integral resistance and magnification to the measurement results were investigated, and in addition, the optimal conditions were confirmed. Under the optimized conditions，precision and recovery rate of the external standard samples on catalytic diesel were investigated, and showed that the sulfur content measured with pretty good accuracy and repeatability with a magnification of 200 times, integral resistance of 600 Ω. It was a simple, rapid and accurate method for measuring large quantities of samples.
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Numerical Simulation of Leakage and Dispersion of Natural Gas Buried Pipeline
Ge Lan， Wu Ming，Zhao Ling，Xie Fei，Cheng Mengmeng，Liu Guangxin，Sun Chao
2014, 34 (5): 19-22,27. DOI:10.3696/j.issn.1672-6952.2014.05.006
Abstract ( ) PDF ( 3011KB ) ( ) 　　
According to different damage process of natural gas pipeline leakage diffusion problems, using FLUENT software, CFD simulation model was established, and studied the different leak diameter of the effects on gas leakage diffusion area and simulated the natural gas leak and diffusion process between mountain and city terrain. The situation of wind speed changing along with the height and mass discharge rates variable with the time were taken into account and UDFs were programmed into the FLUENT to amend them. It concluded that the bigger hold can achieve the higher range, the max lower explosive limit of the high from the ground and downwind horizontal distances of diameter of 6.35 , 25.40 mm and 101.60 mm were 92 m and 322 m,122 m and 770 m, 408 m and 1291 m. When diffuses on the surface and in the soil, the 101.60 mm leak diameter had the maximum diffusion range. The biggest downwind horizontal distances were up to 80 m and 105 m respectively. This was because the gas lost a lot of turbulent energy influenced by the soil above the pipeline.
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Numerical Simulation of Slug Flow in Bend
Yang Fan， Zhou Xiao
2014, 34 (5): 23-27. DOI:10.3696/j.issn.1672-6952.2014.05.007
Abstract ( ) PDF ( 4483KB ) ( ) 　　
The center angle of 90° as a simulation model of the elbow，under the pressure of 0.15 MPa, the gas mass flow rate of 0.912 6 g/s condition, it selects four different liquid flow:0.27, 0.40, 0.53, 0.80 kg/s, and each condition is simulated using the FLUENT software. By numerical simulation results, it analyzes the fluid flow characteristics at the elbow at each of the conditions, and get the basic law and characteristics of elbow slug flow under different liquid flow.
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Crude Oil Property Impacts on the Rule of Shutdown Temperature Drop for Exposed Pipeline
Wang Zicheng， Ma Guiyang， Zhai Meiyu
2014, 34 (5): 28-31. DOI:10.3696/j.issn.1672-6952.2014.05.008
Abstract ( ) PDF ( 2853KB ) ( ) 　　
Establishing an unsteady heat transfer model for the period of pipeline shutdown combined with the thermodynamic properties of exposed pipelines, calculating physical parameters of crude oil in two conditions which changed with temperature and never changed with temperature, the result of the latter condition had great difference with the actual shutdown situation. Therefore physical parameters changing with temperature should be considered. Based on physical parameters of crude oil changing with temperature, changed the factors affecting the shutdown temperature drop such as the shutdown starting oil temperature, ambient temperature and insulation thickness and calculating the safe shutdown time under different conditions. The results show that the growth rate of the safe shutdown time was basically the same with the gradual increasing of the initial oil temperature and the thickness of the insulating layer and the rate of increase was the same and the growth rate of safety shutdown time was increasing with the gradual increasing of ambient temperature and the rate of increase was the same.
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Analysis of the Influence Factors of Heat Loss in Buried Pipelines Transmission Steam
Gao Ziqiao， Ma Guiyang， Wang Yun， Jia Fengrui， Liu Guangxin， Zhao Yang
2014, 34 (5): 32-35. DOI:10.3696/j.issn.1672-6952.2014.05.009
Abstract ( ) PDF ( 2857KB ) ( ) 　　
For high temperature steam vapor transport in the buried pipeline causes heat loss and leads to energy waste problems，several factors affecting heat loss were analyzed. Steam pipeline of physical model and mathematical model was established to simulate the different steam temperatures，different buried depth and temperature distribution under different insulation thickness. And temperature distribution pipeline and the surrounding soil were calculated and analyzed under different conditions. The results show that the heat loss of buried steam lines with the steam temperature, buried depth, changed the thickness of the insulating thickness changes，and the biggest affect of the heat loss was the insulation thickness. When the insulation thickness was from 40 mm to 80 mm，the heat loss per unit length declined 110.591 W/m，and the thermal effect was smaller and smaller .
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Heat Transfer Oil Pipeline Pressure Calculation
Wang Guowei， Wang Shengzhi， Wang Weimin
2014, 34 (5): 36-38,43. DOI:10.3696/j.issn.1672-6952.2014.05.010
Abstract ( ) PDF ( 1115KB ) ( ) 　　
According to the actual production, in order to guarantee asphalt tank heating of the heat transfer oil could smooth return to the heat transfer oil boiler and generally appropriated heat conduction oil pressure. For the whole pipeline pressure drop was calculated, and the friction of pipe and partial friction had carried on the detailed discussion and calculation, and the total pressure dropped along the pipeline. Through the relevant data to calculate the flow rate of heat conduction oil, the pressure centrifugal pump selection scheme of ascension was selected.
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Investigation of CrudeOil Temperature Distribution in the Storage Tank Based on FLUENT
Liang Wenkai， Deng Wenjun， Cong Runzhi， Xie Nan， Lyu Yuling
2014, 34 (5): 39-43. DOI:10.3696/j.issn.1672-6952.2014.05.011
Abstract ( ) PDF ( 4229KB ) ( ) 　　
Accurate measurement on the volume of crudeoil is influenced by the change of oil temperature, the temperature distribution in the storage tank also has a very important significance on the tank safety management and operation. Starting with crudeoil temperature distribution in the storage tank, crudeoil temperature distribution of different locations on central crosssection in the storage tank was analyzed through the numerical simulation based on FLUENT. The results show that the temperature near the tank wall dropped rapidly at first at this early stage of temperature decrease, and the high temperature region was located in tow rectangular zones above the center of the section, presented two rectangular area. When the temperature field was tending towards stability, the high temperature region moved to the connection region in the bottom of the tank and the center of the section. Finally the high temperature region stayed in the bottom of the tank.
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Numerical Simulation of Steam Drive for the  Heavy Oil Reservoirs of M Oilfield
Zhang Bo， Chen Junbin
2014, 34 (5): 44-47. DOI:10.3696/j.issn.1672-6952.2014.05.012
Abstract ( ) PDF ( 910KB ) ( ) 　　
M oilfield belongs to shallow extraheavy oil reservoir. It has come into later stage of steam drive and takes on characteristics as high degree of recovery, increasing decline of production and shrinking benefits. In order to exploit potentialities of northern reservoir and improve the reservoir development, typical well groups were chosen for numerical simulation to optimize injection rates, team quality and to compare development effect of different intermittent steamflood. As a result, an optimal alternative was chosen for the target zone. This research approach provided a reference significance for steamflood of similar oilfield.
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FTA Based on Triangular Fuzzy Number for Roadheader
Zhao Long， Zhang Deqi， Han Cong
2014, 34 (5): 48-51. DOI:10.3696/j.issn.1672-6952.2014.05.013
Abstract ( ) PDF ( 1429KB ) ( ) 　　
Large modern mechanical equipment has become an important factor in determining the productivity and security of a mine. Roadheaders have become the most common tools during digging a long tunnel. However, frequent fault that is imperceptible limit to maximize its performance. FTA based on triangular fuzzy number was applied to analyze the fault of the roadheader of Hongyang mine 3 of Shenyang Coal Trade Group, the probability distribution of the fault of a roadheader and coefficient of fuzzy probability important degree of basic events was got, then the more special precaution and repair could be applied. The above provided important reference for equipment supervisors of coal mine
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The Application of Fuzzy Control in the Positioning  Systems of Unloading Carriage
Ge Linlin
2014, 34 (5): 52-56,69. DOI:10.3696/j.issn.1672-6952.2014.05.014
Abstract ( ) PDF ( 3073KB ) ( ) 　　
Under the background of cloth process for a pellet plant, as to the incorrect positioning and asymmetric cloth of the plant’s cloth in cloth link, a fuzzy control algorithm based on PLC is proposed, with combining the ultrasonic level meter and feedback information of laser distance measuring instrument, which can solve the lack of cloth system effectively. The use of PC configuration interface can achieve remote monitor of cloth process to improve the automation level of this plant and the work condition. During the operation, the proposed system not only can determine material requirements of the orestorage and achieve the accurate positioning of the dumper, but also can reduce the working strength for operators.
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Research on Image Retrieval Optimization Based on SIFTLBP Combination
Zhao Qiang, Tang Meng
2014, 34 (5): 57-60. DOI:10.3696/j.issn.1672-6952.2014.05.015
Abstract ( ) PDF ( 4187KB ) ( ) 　　
For the problem of accuracy, realtime performance and illumination in image retrieval and feature extraction with SIFT, a new image features extracting algorithm based on the SIFT was proposed and the Local Binary Patterns (LBP) algorithm. It used the same keypoint detection method as SIFT. After getting the keypoints of the image features, the SIFTLBP descriptor was made up of statistics of gradient information in 16×16 region and rotation invariant LBP value in 9×9 regions around each keypoint, and then building SIFTLBP Feature Descriptor of image in each pixel region as the center. Finally, the extracted features of data were selected based on genetic algorithm, and removed redundant information of feature point to reduce the dimension of the feature vector. Experimental results showed that the proposed algorithm had a good matching result on Visual Image Feature Extraction, it was validated that the algorithm was strongly robust to changes in lighting conditions, and improved the accuracy and the speed of retrieval.
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A Digital Research of Engineering Curve Based on Web
Shang Yu， Zhang Yan， Jing Bo
2014, 34 (5): 61-64. DOI:10.3696/j.issn.1672-6952.2014.05.016
Abstract ( ) PDF ( 3206KB ) ( ) 　　
The query manner of the engineering curve in the engineering design data mainly looked up the relevant design handbook, a method based on Web was presented, which could get the data and parameters of the normal engineering curve to be digitally, and through the Web page, we could query to data in the electronic version of the engineering curve which was corresponding to the paper version.
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AutoGenerated Basic Viewgraph of FullScale MockUp in AutoCAD
Lan Xiaomin, Wang Shengzhi
2014, 34 (5): 65-69. DOI:10.3696/j.issn.1672-6952.2014.05.017
Abstract ( ) PDF ( 1794KB ) ( ) 　　
The current issue that autogenerated basic viewgraph of fullscale mockup were faced in AutoCAD was analyzed, which proposed to calculate the size of entity based on the features of fullscale mockup. This new methodology provided the solution of that old model that was not capable of define the size of entity issue which caused autopositioning problem between basis viewgraphs. It also offered a brand new technique to automatically generate basic viewgraph of fullscale mockup, which was benefited from VisualLISP coding application.
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Reconstruction of Regular RippedUp Documents
Pan Bin, Guo Xiaoming，Chen Mingming, Yu Jingxian, Zhao Xiaoying,Chen Wei
2014, 34 (5): 70-73,78. DOI:10.3696/j.issn.1672-6952.2014.05.018
Abstract ( ) PDF ( 1818KB ) ( ) 　　
Reconstruction of rippedup documents was important for judicial authentication，cultural relic reconstruction and military information acquisition，etc．An approach for the reconstruction of regularly rippedup documents was proposed. Firstly, the line spacing of the fragments was automatically extracted. Secondly, meanshift algorithm was adapted to cluster all the fragments. Thirdly, for each cluster, the similarity matrix was constructed based on the grayscale of the edges of the fragments. Lastly, the document with genetic algorithm was reconstructed.Reconstruction of rippedup documents is important for judicial authentication，cultural relic reconstruction and military information acquisition，etc．In this paper，we propose an approach for the reconstruction of regularly rippedup documents. Firstly, the line spacing of the fragments is automatically extracted|Then meanshift algorithm is adapted to cluster all the fragments|Then for each cluster, the similarity matrix is constructed based on the grayscale of the edges of the fragments|Lastly, we reconstruct the document with genetic algorithm.
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TheInfluence Factors on Derivative Financial Instruments Accounting Information Disclosure Quality
Chen Xue， Yu Zhaohe
2014, 34 (5): 74-78. DOI:10.3696/j.issn.1672-6952.2014.05.019
Abstract ( ) PDF ( 930KB ) ( ) 　　
At present, the derivative financial instrument to accounting information disclosure quality is not optimistic. Because the development of derivative market in China is not mature, the relevant rules formulated should be improved. Firstly, the influencing factors on the quality of the derivative financial instrument to accounting information disclosure were researched .Secondly, the relationship between the influencing factors and disclosure quality was determined based on the analysis. Finally, the results made enterprises improve the quality of derivative financial instruments to accounting information disclosure and stakeholders support the proper use of derivative financial instruments accounting information.
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The Mediating Effect Analysis of R&D on  Investment of BioPharmaceutical Companies
Wang Lihua， Li Haihong
2014, 34 (5): 79-84. DOI:10.3696/j.issn.1672-6952.2014.05.020
Abstract ( ) PDF ( 939KB ) ( ) 　　
Based on the data of biopharmaceutical companies listed on the main board of the Shenzhen and Shanghai in 20102012 year as a study sample, the corporate performance as the dependent variable, the shareholding structure as the independent variable, and R&D investment as an intermediary variables regression model was established. An empirical test was accomplished by software SPSS19.0. The results showed that R&D investment was of mediated effects between ownership structure and corporate performance.
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