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Pilot Test of Preparing 2-Alkylanthraquinone Using Alkylation-Oxidation Technology

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China Petroleum Processing & Petrochemical Technology 2024年第1期26卷 88-97页

作者： Zheng Bo Qian Jianguo Shi Peng Pan Zhiyong Qie Siyuan Zhang Yueqin Fei Jianqi Qiao Liang Zong Baoning SINOPEC research institute of Petroleum Processing co. LtdBeijing 100083 Shijiazhuang United Petrochemical co. LtdShijiazhuang 050011

To expedite the development of industrial technology for producing 2-alkylanthraquinone,a novel pilot test of alkylation-oxidation technology was *** process mainly included anthracene alkylation,separation of anthracene and 2-alkylanthracene,oxidation of 2-alkylanthracene,and product *** alkylation co.ditions yielded a 91.1%co.version of anthracene and a 71.73%selectivity for *** address the separation problem of anthracene and 2-alkylanthracene,solvent-assisted distillation technology was developed,resulting in a 98.9%purity of 2-alkylanthracene and a 91.82%separation *** the molar ratio of H2O_(2) to 2-alkylanthracene was 7:1,a 98.96%co.version of 2-alkylanthracene and a 99.94%selectivity for 2-alkylanthraquinone were achieved.A novel co.position of 2-alkylanthraquinone,including 2-tert-butylanthraquinone,2-tert-amylanthraquinone,and 2-hexylanthraquinone,was *** co.position co.ld be effectively separated and purified through a co.bination of crystallization and washing *** elemental co.position of the product met the existing standards,and its hydrogenation performance closely matched that of co.mercially available 2-tert-amylanthraquinone products.

关键词： anthracene 2-alkylanthracene 2-alkylanthraquinone alkylation oxidation hydrogen peroxide

Fabricating functionally graded Fe-Cr-co.permanent magnetic alloys via laser powder bed fusion

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Journal of Iron and Steel research(International) 2024年第3期31卷 729-737页

作者： Ya-zhou He Ya-qing Hou Peng Shen Hao Zhang Dong Zhou Hang Su Central Iron and Steel research institute co. Ltd.Beijing 100081China Material Digital R&D Center China Iron and Steel Research Institute Group Co.Ltd.Beijing 100081China

Laser powder bed fusion(LPBF)in-situ alloying technology offers the possibility to co.struct gradient materials with varied structures and *** graded Fe-Cr-co.permanent magnetic alloys were fabricated by LPBF and in-situ alloying mixed powders of Fe,Cr,and co.*** effects of different Fe,Cr and co.co.tents on the microstructure,magnetic properties and hardness of Fe-Cr-co.alloys prepared by LPBF were *** as-built Fe-Cr-co.alloys present a single body-centered-cubic phase and have a homogeneous distribution of *** mechanical properties and magnetic properties of the co.positionally graded sample show a gradient *** the increase in Cr co.tent,the Vickers hardness of the sample increases,and the saturation magnetization of the sample *** optimal magnetic properties in an isotropic state are given as co.rcivity HcB=21.65 kA/m,remanence Br=0.70 T and energy product(BH)_(max)=5.35 kJ/m^(3),which are co.parable to or higher than the reported magnetic properties in an isotropic state prepared by traditional powder *** in-situ alloying technology has the potential to further explore Fe-Cr-co.magnetic materials,such as those co.sisting of multiple or more co.stituent elements,and to maximize the co.positional flexibility of magnetic materials.

关键词： Fe-Cr-co.alloy Laser powder bed fusion In-situ alloying Functional material Magnetic property

Novel Method for Evaluating the Aging of Aviation Turbine Engine Oils via High-Temperature Bearing Deposit Tests

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China Petroleum Processing & Petrochemical Technology 2024年第1期26卷 67-77页

作者： Hao Lichun Yang He Song Haiqing Zhou Yunfan He Jingjian Liang Yuxiang SINOPEC research institute of Petroleum Processing co. Ltd.Beijing 100083

Aviation turbine engine oils require excellent thermal-oxidative stability because of their high-temperature ***-temperature bearing deposit testing is a mandatory method for measuring the thermal-oxidative performance of aviation lubricant oils,and the relevant apparatus was improved in the present *** different co.mercial aviation turbine engine oils were tested,one with standard performance(known as the SL oil)and the other with high thermal stability,and their thermal-oxidative stability characteristics were *** 100 h of high-temperature bearing testing,the SL oil was analyzed by using various analytical techniques to investigate its thermal-oxidative process in the bearing test,with its thermal-oxidative degradation mechanism also being *** results indicate that the developed high-temperature bearing apparatus easily meets the test requirements of method 3410.1 in standard *** visco.ity and total acid number(TAN)of the SL oil increased with the bearing test time,and various deposits were produced in the bearing test,with the micro-particles of the carbon deposits being sphere-like,rod-like,and sheet-like in *** antioxidant additives in the oil were co.sumed very rapidly in the first 30 h of the bearing test,with N-phenyl-1-naphthylamine being co.sumed faster than ***,the oil thermal-oxidative process involves very co.plex physical and chemical mechanisms.

关键词： aviation turbine engine oil high-temperature bearing deposit test thermal-oxidative degradation antioxidant additives

LPCS Ni-Zn-Al_(2)O_(3) Intermediate Layer Enhanced SPS NiCr-Cr_(3)C_(2) co.ting with Higher co.rosion and Wear Resistances

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Journal of Wuhan University of Technology(Materials Science) 2024年第1期39卷 188-195页

作者：白杨 LI Yan XING Lukuo LI Xiangbo WANG Zhenhua State Key Laboratory of Marine co.tings Marine Chemical Research Institute Co.Ltd.Qingdao 266071China co.lege of Mechanical and Electrical Engineering University of China Petroleum(East China)Qingdao 266580China Science and Technology on Marine co.rosion and Protection Laboratory Luoyang Ship Materials Research InstituteQingdao 266101China

The double-layer NiCr-Cr_(3)C_(2)/Ni-Zn-Al_(2)O_(3) co.tings with sufficient co.rosion and wear resistance were prepared on low carbon steel *** intermediate layers Ni-Zn-Al_(2)O_(3) were fabricated by using low-pressure co.d spray (LPCS) method to improve the salt fog co.rosion resistance properties of the supersonic plasma spray (SPS) NiCr-Cr_(3)C_(2) *** friction and wear performance for the double-layer and single-layer NiCr-Cr_(3)C_(2) co.tings were carried out by line-co.tact reciprocating sliding,*** with the co.ting surface analysis techniques,the effect of the salt fog co.rosion on the tribological properties of the double-layer co.tings was *** results showed that the double-layer co.tings exhibited better wear resistance than that of the single-layer co.tings,due to the better co.rosion resistance of the intermediate layer;the wear mass losses of the double-layer co.tings was reduced by 70%than that of the single layer co.tings and the wear mechanism of co.tings after salt fog co.rosion co.ditions is mainly co.rosion wear.

关键词： low-pressure co.d spray NiCr-Cr_(3)C_(2)co.ting wear behavior salt fog co.rosion

co.trollable co.densation of Aromatics and Its Mechanisms in Carbonization

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China Petroleum Processing & Petrochemical Technology 2024年第1期26卷 34-46页

作者： Fan Xi Wang Chunlu Luo Yang Ren Qiang Shen Haiping Long Jun Sinopec research institute of Petroleum Processing co. Ltd.Beijing 100083China

In order to obtain liquefied products with higher yields of aromatic molecules to produce mesophase pitch,a good understanding of the relevant reaction mechanisms is *** molecular dynamics simulations were used to study the thermal reactions of pyrene,1-methylpyrene,7,8,9,10-tetrahydrobenzopyrene,and mixtures of pyrene with 1-octene,cyclohexene,or *** reactant co.version rates,reaction rates,and product distributions were calculated and co.pared,and the mechanisms were analyzed and *** results demonstrated that methyl and naphthenic structures in aromatics might improve the co.version rates of reactants in hydrogen transfer processes,but their steric hindrances prohibited the generation of high *** naphthenic structures co.ld generate more free radicals and presented a more obvious inhibition effect on the co.densation of polymers co.pared with the methyl side *** was disco.ered that when different olefins were mixed with pyrene,1-octene primarily underwent pyrolysis reactions,whereas cyclohexene mainly underwent hydrogen transfer reactions with pyrene and styrene,mostly producing superco.jugated biradicals through co.densation reactions with *** the mixture systems,the olefins scattered aromatic molecules,hindering the formation of pyrene trimers and higher *** to the reactive molecular dynamics simulations,styrene may enhance the yield of dimer and enable the co.trolled polyco.densation of pyrene.

关键词： carbonization co.trollable co.densation aromatics mechanisms molecular simulation

Online diagnosis platform for tomato seedling diseases in greenhouse production

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 80-89页

作者： Xin Jin Xiaowu Zhu Jiangtao Ji Mingyong Li Xiaolin Xie Bo Zhao co.lege of Agricultural Equipment Engineering Henan University of Science and TechnologyLuoyang 471003HenanChina Science&Technology Innovation Center for co.pleted Set Equipment Longmen LaboratoryLuoyang 471023HenanChina institute of Mechatronics Technology and Application China Mechanized Agriculture Science Research Institute Group Co.LtdBeijing 100020China

The facility-based production method is an important stage in the development of modern agriculture,lifting natural light and temperature restrictions and helping to improve agricultural production *** address the problems of difficulty and low accuracy in detecting pests and diseases in the dense production environment of tomato facilities,an online diagnosis platform for tomato plant diseases based on deep learning and cluster fusion was proposed by co.lecting images of eight major prevalent pests and diseases during the growing period of tomatoes in a facility-based *** diagnostic platform co.sists of three main parts:pest and disease information detection,clustering and decision-making of detection results,and platform diagnostic ***,based on the You Only Look Once(YOLO)algorithm,the key information of the disease was extracted by adding attention module(CBAM),multi-scale feature fusion was performed using weighted bi-directional feature pyramid network(BiFPN),and the overall co.struction was designed to be co.pressed and lightweight;Seco.dly,the k-means clustering algorithm is used to fuse with the deep learning results to output pest identification decision values to further improve the accuracy of identification applications;Finally,a detection platform was designed and developed using Python,including the front-end,back-end,and database of the system to realize online diagnosis and interaction of tomato plant pests and *** experiment shows that the algorithm detects tomato plant diseases and insect pests with mAP(mean Average Precision)of 92.7%,weights of 12.8 Megabyte(M),inference time of 33.6 *** with the current mainstream single-stage detection series algorithms,the improved algorithm model has achieved better performance;The accuracy rate of the platform diagnosis output pests and diseases information of 91.2%for images and 95.2%for *** is a great significance to tomato pest co.trol research and t

关键词： pest and disease detection YOLO diagnosis platform k-means clustering facility production base

A Data-Oriented Method to Optimize Hydraulic Fracturing Parameters of Tight Sandstone Reservoirs

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Energy Engineering 2024年第6期121卷 1657-1669页

作者： Zhengrong Chen Mao Jiang Chuanzhi Ai Jianshu Wu Xin Xie CNOOC research institute co. Ltd.Beijing100028China

Based on the actual data co.lected from the tight sandstone development zone, co.relation analysis using theSpearman method was co.ducted to determine the main factors influencing the gas production rate of tightsandstone fracturing. An integrated model co.bining geological engineering and numerical simulation of fracturepropagation and production was co.pleted. Based on data analysis, the hydraulic fracture parameters wereoptimized to develop a differentiated fracturing treatment adjustment plan. The results indicate that the influenceof geological and engineering factors in the X1 and X2 development zones in the study area differs ***, it is challenging to adopt a uniform development strategy to achieve rapid production increase. Thedata analysis reveals that the variation in gas production rate is primarily affected by the reservoir thickness andpermeability parameters as geological factors. On the other hand, the amount of treatment fluid and proppantaddition significantly impact the gas production rate as engineering factors. Among these factors, the influence ofgeological factors is more pronounced in block X1. Therefore, the main focus should be on further optimizing thefracturing interval and adjusting the geological development well location. Given the existing well location, thereis limited potential for further optimizing fracture parameters to increase production. For block X2, the fracturingparameters should be optimized. Data screening was co.ducted to identify outliers in the entire dataset, and adata-driven fracturing parameter optimization method was employed to determine the basic adjustment directionfor reservoir stimulation in the target block. This approach provides insights into the influence of geological,stimulation, and co.pletion parameters on gas production rate. co.sequently, the subsequent fracturing parameteroptimization design can significantly reduce the modeling and simulation workload and guide field operations t

关键词： Data mechanism driven fracturing parameters gas production co.relation tight sandstone gas

A molecular insight into co.e formation process of vacuum residue in thermal cracking reaction

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Petroleum Science 2024年第3期21卷 2130-2138页

作者： Ji-Guang Li Xin Guo Huan-Di Hou Heavy Oil Processing Department Sinopec Research Institute of Petroleum Processing Co.LtdBeijing100083China

Understanding the co.ing behaviors has been co.sidered to be really essential for developing better vacuum residue processing technologies.A battery of thermal cracking tests of typical vacuum residue at 410℃ with various reaction time were performed to evaluate the co.e formation *** total yields of ideal co.ponents including naphtha,atmospheric gas oil(AGO)and vacuum gas oil(VGO)of thermal cracking reactions increased from 10.89%to 40.81%,and the co.version ratios increased from8.05%to 43.33%with increasing the reaction time from 10 to 70 *** asphaltene co.tent increased from 12.14%to a maximum of 22.39%and then decreased,and this maximum of asphaltene co.tent occurred at the end of the co.ing induction *** asphaltenes during the co.ing induction period,at the end and after co.ing induction period of those tested thermal cracking reactions were characterized to disclose the structure changing rules for co.e formation process,and the co.e formation pathways were discussed to reveal the co.e formation process at molecular level.

关键词： Vacuum residue Thermal cracking Asphaltene co.ing induction period Sulfur Nitrogen

Atomistic mechanism of high ionic co.ductivity in lithium ytterbium-based halide solid electrolytes:A first-principles study

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Journal of Rare Earths 2024年第1期42卷 155-162,I0006页

作者： Limin Wang Wei Xiao Lu Sun Rong Yang Jinqiu Yu Ligen Wang State Key Laboratory of Nonferrous Metals and Processes China GRINM Group Co.Ltd.Beijing100088China GRIMAT Engineering institute co. Ltd.Beijing101407China General research institute for Nonferrous Metals Beijing100088China China Automotive Battery research institute co. Ltd.Beijing101407China Rare Earth Functional Materials(Xiong'an)Innovation Center co. Ltd.Xiong'an071700China

As the next generation of co.mercial automotive power batteries begins replacing liquid lithium batteries,many look towards all-solid-state batteries to pioneer the ***-so lid-state batteries have attracted the attention of co.ntless researchers around the world because of their high safety and high energy *** recent times,halide solid-state electrolytes have beco.e a research hotspot within solid-state electrolytes because of their potentially superior *** this paper,in the framework of DFT,we investigated the atomic mechanisms of improving the ionic co.ductivity and stability of Li_(3)YbCl_(6).Our calculations show that both trigonal and orthorhombic Li_(3)YbCl_(6) exhibit wide electrochemical windows and metastable properties(100 meV/atom>Ehull>0 meV/atom).However,the orthorhombic Li_(3)YbCl_(6) can be stabilized at high temperatures by taking the vibrational entropy into acco.nt,which is supported by the experimental ***,it is expected that because of the Yb/Li synergistic interactions that,due to their strong mutual co.lomb repulsion,influence the Li^(+)transport behavior,the orthorhombic Li_(3)YbCl_(6) might have superior ionic co.ductivities with appropriate Li+migration paths determined by the Yb^(3+) ***,higher ionic co.ductivities can be obtained by regulating the random distribution of Li^(+) *** Li^(+)-deficiency can also largely increase the ionic co.ductivity by invoking *** study helps gain a deeper understanding of the laws that govern ionic co.ductivities and stabilities and provides a certain theoretical reference for the experimental development and design of halide solid-state electrolytes.

关键词： Halide solid-state electrolytes Phase stability Ionic co.ductivity First-principles calculations Rare earths