Investigation of Photocatalytic Oxidative-Extraction Desulfurization of Simulation Gasoline

2012 ◽  
Vol 518-523 ◽  
pp. 750-754 ◽  
Author(s):  
Xiao Dan Qiang ◽  
Feng Fu ◽  
Dan Jun Wang ◽  
Li Guo
Keyword(s):  
Catalytic Cracking ◽  
Processing Parameters ◽  
Extraction Process ◽  
Heterogeneous Photocatalysis ◽  
Oxidative Process ◽  
Fcc Gasoline ◽  
Orthogonal Experiments ◽  
Oxidative Products ◽  
Sulfur Containing

Photocatalytic Oxidative-Extraction Desulfurization (Photo-cat-EODS) of thiophene, the main sulfur-containing compound of catalytic cracking (FCC) gasoline, has been investigated in heterogeneous photocatalysis process using WO3/ZnO composite as photocatalyst and air was used as the oxidant. Extraction process was also employ followed by the photocatalytic oxidative process to remove the oxidative products using acetonitrile as the extractant. Furthermore, orthogonal experiments method was used to optimize the processing parameters.

Reflux Extraction of Aloetic Anthraquinone

2012 ◽  
Vol 441 ◽  
pp. 522-525 ◽  
Author(s):  
Zhi Peng He ◽  
Zan Min Wu ◽  
Yu Yang Han
Keyword(s):  
Health Care ◽  
Infrared Spectroscopy ◽  
Energy Saving ◽  
Ethanol Concentration ◽  
Extraction Process ◽  
Extraction Temperature ◽  
Single Factor ◽  
Orthogonal Experiments ◽  
Current Energy ◽  
Application Prospects

Using ethanol as solvent, reflux extraction of aloetic anthraquinone compounds was studied. The single-factor orthogonal experiments were conducted to optimize extraction process and the extractive was identified using infrared spectroscopy. The results suggested the best extraction conditions: ethanol concentration 70%, extraction temperature 333.15K, extraction time 25 min, bath ratio 1:1.5. This simple and effective extracting method is in accord with current energy-saving, environmental protecting trends, and its product has wide application prospects for preparation of health-care textiles.

Influence of Processing Parameters on Surface Roughness in Micro Mill-Grinding Aluminium Alloy 6061

2014 ◽  
Vol 1017 ◽  
pp. 495-499
Author(s):  
Ya Dong Gong ◽  
Chao Wang ◽  
Jun Cheng ◽  
Xue Long Wen ◽  
Guo Qiang Yin
Keyword(s):  
Surface Roughness ◽  
Aluminium Alloy ◽  
Feed Rate ◽  
Processing Parameters ◽  
Micro Milling ◽  
Processing Conditions ◽  
Cutting Depth ◽  
Orthogonal Experiments ◽  
Alloy 6061 ◽  
Better Than

Orthogonal experiments of micro mill-grinding were conducted on aluminium alloy 6061. Electroplated CBN compound tools were used in machining. Surface topography and roughness of the machined workpieces were measured and analyzed. Influence rules of radial cutting depth,feed rate and spindle speed on surface roughness in micro mill-grinding were studied. The results were compared with those in micro milling. It shows that the influence rules of processing parameters on surface roughness in micro mill-grinding are approximately same with those in micro milling. And in the same processing conditions, the surface roughness of micro mill-grinding is better than that of micro milling. The minimum value of surface roughness Ra of micro mill-grinding is 0.609μm in the experiments.

Simulation of Supercritical CO2 Extraction for Peanut Oil Based on Artificial Neural Networks

2010 ◽  
Vol 37-38 ◽  
pp. 1172-1175
Author(s):  
Jin Shan Dong ◽  
Bo Qin Gu
Keyword(s):  
Experimental Data ◽  
Neural Networks ◽  
Artificial Neural Networks ◽  
Processing Parameters ◽  
Extraction Process ◽  
Experimental Results ◽  
Peanut Oil ◽  
Operating Pressure ◽  
Percentage Extraction ◽  
Extraction Experiment

The BP ANN was established based on MATLAB to simulate the supercritical CO2extraction process for extracting peanut oil. The supercritical CO2extraction experiment for peanut oil was carried out and the experimental results were used to train the BP ANN. The operating pressure, temperature and time were regarded as the inputs of the BP ANN and the percentage extraction as the output. By testing the BP ANN with other groups of experimental data, the precision of the BP ANN was verified. This BP ANN can predict the percentage extraction when the processing parameters of supercritical CO2extraction are given, and the optimization of the processing parameters can also be realized.

Laser Direct-Part Marking of Data Matrix Barcodes on the Surface of Metal Alloy Material

2017 ◽  
Vol 744 ◽  
pp. 244-248
Author(s):  
Chun Ling Li ◽  
Chang Hou Lu
Keyword(s):  
Surface Roughness ◽  
Average Power ◽  
Processing Parameters ◽  
Data Matrix ◽  
Direct Part ◽  
Factors Affecting ◽  
Laser Parameters ◽  
Orthogonal Experiments ◽  
Alloy Material ◽  
Multivariate Nonlinear Regression

The influences of laser processing parameters on the symbol contrast and surface roughness of Data Matrix barcodes were studied by single factor experiments using a Q-switched lamp pumped Nd:YAG laser. The orthogonal experiments were carried out to further study the relationship between laser parameters and surface roughness. Multivariate nonlinear regression analyses were performed based on the orthogonal experimental results and a mathematical relationship between parameters and surface roughness was established. The results show that the change trend of surface roughness is similar to symbol contrast with the increase of laser parameters. Both the average power and two different overlaps are important factors affecting the surface roughness and symbol contrast. But the current intensity has an insignificant impact on the surface roughness. The developed regression model can be used to predict the roughness of Data Matrix barcodes. This study can improve industrial application of laser direct part marking technology on titanium alloy substrates.

A Green Pre-Film for Carbon Steel by Cerium Salt in Seawater

2012 ◽  
Vol 538-541 ◽  
pp. 72-77
Author(s):  
Li Li Gao ◽  
Zheng Zhang ◽  
Wei Zhen Wang ◽  
Xiang Yu Hou ◽  
Jing Wang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Protective Layer ◽  
Processing Parameters ◽  
Forming Process ◽  
Effective Protection ◽  
Environment Friendly ◽  
Orthogonal Experiments ◽  
Digital Microscope ◽  
Cerium Salt ◽  
Fe Hydroxide

An environment-friendly pre-film for carbon steel was obtained by using seawater with cerium salt. The influencing factors of cerium salt pre-film were discussed through orthogonal experiments, and the optimum processing parameters were confirmed. Then morphology, composition, the forming process and corrosion resistance of the pre-film were investigated. Analysis by digital microscope showed that the cerium salt pre-film was a blue uniform coating. EDS images displayed that the pre-film consisted of Ce, O and Fe, the major component of the protective layer was a mixture of Ce oxide, Ce hydroxide and Fe hydroxide. The results of electrochemical potentiodynamic polarization and gravimetric measurements indicated that the cerium salt pre-film provided effective protection to the substrate of carbon steel.

scholarly journals Industrial application of gasoline aromatization and desulfurization technology in Hohhot refinery

2017 ◽  
Vol 23 (3) ◽  
pp. 391-398
Author(s):  
Zixia Li ◽  
Yin Ran ◽  
Wenqi Zhang ◽  
Wei Sun ◽  
Tinghai Wang
Keyword(s):  
Industrial Application ◽  
Catalytic Cracking ◽  
Sulfur Removal ◽  
Economic Benefits ◽  
Fluid Catalytic Cracking ◽  
Operation Condition ◽  
High Quality ◽  
Great Flexibility ◽  
Research Octane Number ◽  
Fcc Gasoline

Gasoline aromatization and desulfurization (GARDES) technology is extensively used in refineries of Petrochina, aiming to produce high quality ultraclean fluid catalytic cracking (FCC) gasoline. This article introduces the industrial application results on the hydrodesulfurization unit of the Hohhot refinery, which plays an important role in guiding next round gasoline upgrading. The characteristics and the principle of GARDES technology were elaborated by analyzing the distribution of sulfur and hydrocarbon compounds in the feed and product. The analysis results proved that the presence of broad ranged sulfur types in the feed can be removed at different stages. Olefin can be decreased by saturation and conversion into i-paraffins and aromatics. The sulfur content of the blend product can be limited under 10 mg/kg, showing GARDES technology has excellent sulfur removal ability. The olefin reduction can also satisfy the ever-increasing severe requirement about the olefin limitation, while the loss of research octane number (RON) can be minimized to an acceptable level. Furthermore, according to the demand of gasoline upgrading, GARDES technology has great flexibility by adjusting operation condition without any further investment, which brings more economic benefits for refinery.

Flexibility Modification of KGM Membranes by Maleic Anhydride

2009 ◽  
Vol 620-622 ◽  
pp. 627-630 ◽  
Author(s):  
Yan Chen ◽  
Xue Gang Luo ◽  
Xiao Yan Lin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Maleic Anhydride ◽  
Processing Parameters ◽  
Konjac Glucomannan ◽  
Optimum Conditions ◽  
Orthogonal Experiments ◽  
Folding Endurance ◽  
Effects Of Ph

Konjac Glucomannan (KGM) was modified by maleic anhydride (MA). The influences of processing parameters on the mechanical properties of KGM films were investigated through orthogonal experiments. The results showed that the effects of pH, temperature and time of KGM swelling on tensile strength and folding endurance of modified KGM membranes were insignificant (F<F0.05). The quantity of MA affected slightly on the tensile strength (F<F0.05), but its effect on the folding endurance was significant (F>F0.01). Folding endurance and tensile strength of KGM membranes could be improved by proper addition of MA. The optimum conditions of KGM modification were that the mixture of KGM and MA was swelling at pH 4.0 and 60°C for 2 h, and then cast on a flat and dried at 50°C to give modified KGM membranes.

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