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铁合金 2025年第1期56卷 21-24页

作者：刘宪成吉林中泽钼业有限公司吉林吉林132002

介绍了碳质还原剂的理化性能,同时阐述了其性能对电炉经济技术指标的影响.对比分析了冶金焦及兰炭对锰硅合金冶炼指标,生产实践表明,冶金焦比较适合锰硅合金的生产,焦炭粒度及质量的好坏会严重影响锰硅合金的冶炼指标,特别是产量和电耗... 详细信息

介绍了碳质还原剂的理化性能,同时阐述了其性能对电炉经济技术指标的影响.对比分析了冶金焦及兰炭对锰硅合金冶炼指标,生产实践表明,冶金焦比较适合锰硅合金的生产,焦炭粒度及质量的好坏会严重影响锰硅合金的冶炼指标,特别是产量和电耗指标.

关键词：还原剂冶金焦兰炭性能

Post-riser Regeneration Technology in FCC Unit

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Petroleum Science 2007年第2期4卷 91-96页

作者： liu xiancheng Lu Chunxi Shi Mingxian State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 China Coal to Oil ＆ Chemicals Department Shenhua Group Corporation Ltd. Beijing 100011 China

In our present work, a post-riser regeneration technology （PRRT） for fluid catalytic cracking （FCC） units was developed to deal with increasingly heavier feedstock and hereby the larger amount of coke deposited on the catalyst particles during reaction. This technology can make full use of the advantages of riser regenerator, such as high cokeburning efficiency and low residual carbon, and at the same time overcome its disadvantages, such as difficulty in starting combustion. The average particles concentration on the cross section of the system was studied on a large scale cold model experimental set-up. Also a necessary software was developed by combining the hydrodynamics research results in our work with the coke-burning kinetics model and the heat and mass transfer model developed by previous researchers. The simulation results showed that the PRRT could increase regeneration capability by 16.28%-26.24% over the conventional turbulent fluidized bed regenerator under the similar operation conditions, and that the residual carbon could be kept below 0.1 wt %.

关键词： Fluid catalytic cracking (FCC) post-riser regenerator turbulent fluidized bed regenerator FCC regenerator

Gas-solids separation model of a novel FCC riser terminator device: super short quick separator (SSQS)

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Frontiers of Chemical Science and Engineering 2008年第4期2卷 462-467页

作者： Chunxi LU Ruxin LI xiancheng liu Mingxian SHI States Key Laboratory of Heavy Oil Processing China University of Petroleum(Beijing)Beijing 102249China Coal to Oil&Chemicals Department Shenhua Group Co.LtdBeijing 100011China

The gas flow field and the separation efficiency of a novel fluid catalytic cracking (FCC) riser terminal device, named as Super Short Quick Separator (SSQS), were studied. On the basis of above investigations, a section-lateral-mixing separation model was proposed, which included both the effect of inertia and structure of gas outlet on particles capture. After final modification, the results predicted with this model could be in good agreement with the cold experimental data. According to this model, the separation efficiency of SSQS is mainly influenced by the difference between the arc radius and the center pipe radius as well as the magnitude of particle tangential velocity.

关键词： fluidized catalytic cracking riser quick sepa-rator separation model

Ding Family Mansion: A Masterpiece of Hakka Architecture

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China & The World Cultural Exchange 2008年第6期74卷 36-38页

作者： liu xiancheng

The Hakka are a subgroup of the Han Chinese people. Their ancestors are said to have migrated from central China due to famines and wars and settled in Fujian, Jiangxi and Canton in southern China. Several hundred yea... 详细信息

关键词：建筑艺术客家族文化特征少数民族

Particle Size-Controlled Oxygen Reduction and Evolution Reaction Nanocatalysts Regulate Ru(bpy)_(3)^(2+)’s Dual-potential Electrochemiluminescence for Sandwich Immunoassay

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Research 2023年第4期2023卷 701-715页

作者： Shijun Wang Shu Zhu Ziqi Kang Xiangxiu Wang Zixin Deng Kun Hu Jianjun Hu xiancheng liu Guixue Wang Guangchao Zang Yuchan Zhang Institute of Life Science and Laboratory of Tissue and Cell Biology Lab Teaching&Management CenterChongqing Medical UniversityChongqing 400016China Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing 400030China Jinfeng Laboratory Chongqing 401329China Department of Pathophysiology Chongqing Medical UniversityChongqing 400016China Department of Pathology Guizhou Provincial People’s HospitalGuiyangGuizhou 550002China

Multiple signal strategies remarkably improve the accuracy and efficiency of electrochemiluminescence(ECL)immunoassays,but the lack of potential-resolved luminophore pairs and chemical cross talk hinders their *** this study,we synthesized a series of gold nanoparticles(AuNPs)/reduced graphene oxide(Au/rGO)composites as adjustable oxygen reduction reaction and oxygen evolution reaction catalysts to promote and modulate tris(2,2′-bipyridine)ruthenium(II)(Ru(bpy)_(3)^(2+))’s multisignal *** the increase in the diameter of AuNPs(3 to 30 nm),their ability to promote Ru(bpy)_(3)^(2+)’s anodic ECL was first impaired and then strengthened,and cathodic ECL was first enhanced and then ***/rGOs with medium-small and medium-large AuNP diameters remarkably increased Ru(bpy)_(3)^(2+)’s cathodic and anodic luminescence,***,the stimulation effects of Au/rGOs were superior to those of most existing Ru(bpy)_(3)^(2+)***,we proposed a novel ratiometric immunosensor construction strategy using Ru(bpy)_(3)^(2+)’s luminescence promoter rather than luminophores as tags of antibodies to achieve signal *** method avoids signal cross talk between luminophores and their respective co-reactants,which achieved a good linear range of 10−7 to 10−1 ng/ml and a limit of detection of 0.33 fg/ml for detecting carcinoembryonic *** study addresses the previous scarcity of the macromolecular co-reactants of Ru(bpy)_(3)^(2+),broadening its application in biomaterial ***,the systematic clarification of the detailed mechanisms for converting the potential-resolved luminescence of Ru(bpy)_(3)^(2+)could facilitate an in-depth understanding of the ECL process and should inspire new designs of Ru(bpy)_(3)^(2+)luminescence enhancers or applications of Au/rGOs to other *** work removes some impediments to the development of multisignal ECL biodetection systems and provides vitality into their

关键词： luminescence potential reactant

Gradient nanostructure enabled exceptional fretting fatigue properties of Inconel 718 superalloy through submerged abrasive waterjet peening

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Chinese Journal of Aeronautics 2025年第1期38卷 586-606页

作者： Shulei YAO Yuxin CHI Xianhao ZHU Kaiming ZHANG Tiwen LU Kaishang LI Ning WANG Chengcheng ZHANG Shuang liu xiancheng ZHANG Shantung TU Key Laboratory of Pressure Systems and Safety Ministry of EducationSchool of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China AECC Commercial Aircraft Engine Co.LTD Shanghai Engineering Research Center for Commercial Aircraft EngineShanghai 201108China

Submerged Abrasive Waterjet Peening(SAWJP)shows great application potential in augmenting the fatigue properties of metallic ***,the present work aims to investigate the influence of SAWJP on the Surface Integrity(SI)and Fretting Fatigue(FF)properties of Inconel 718(IN718)superalloy and illustrate the microstructural evolution,FF life improvement,and fretting wear ***,the SI of the IN718 specimen was examined following treatment via *** showed that the specimen subjected to SAWJP formed a total plastic deformation layer of 56μ*** maximum microhardness and Compressive Residual Stress(CRS)measured across the depth of the SAWJP-treated specimens exhibited an increase in values ranging between 522 HV and 541 HV and 1171–1380 MPa,*** FF test results of the specimen before and after SAWJP treatment at ambient temperatures indicated that the FF life of the SAWJP-treated specimen surpassed that of the as-received specimen by a factor of *** examination of the FF fracture,contact surface,and crack propagation behavior revealed the crucial factors contributing to the enhanced FF resistance of the IN718 specimen,including the gradient nanostructure characterized by ultra-refined grains,substantial CRS,and elevated microhardness,which were all induced by the SAWJP treatment.

关键词： Submerged abrasive waterjet peening Inconel 718 superalloy Microstructural evolution Surface integrity Fretting fatigue

圆钢管地聚物砖骨料再生混凝土长柱偏压受力性能研究

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建筑结构学报 2023年第8期44卷 159-169页

作者：颜桂云王迪吴应雄郑永乾刘宪成福建理工大学福建省土木工程新技术与信息化重点实验室福建福州350118 福州大学土木工程学院福建福州350116

为研究圆钢管地聚物砖骨料再生混凝土长柱在偏压荷载作用下的受力性能,以砖骨料取代率、长细比和偏心率为主要参数,设计了10根圆钢管地聚物砖骨料再生混凝土长柱并进行偏心受压试验,分析柱的失效模态、荷载-位移关系、荷载-应变关系、... 详细信息

为研究圆钢管地聚物砖骨料再生混凝土长柱在偏压荷载作用下的受力性能,以砖骨料取代率、长细比和偏心率为主要参数,设计了10根圆钢管地聚物砖骨料再生混凝土长柱并进行偏心受压试验,分析柱的失效模态、荷载-位移关系、荷载-应变关系、侧向变形、延性等;采用数值模拟开展偏压荷载作用下圆钢管地聚物砖骨料再生混凝土长柱的受力全过程分析,对压弯相关曲线进行参数化分析,提出一种简化的偏心受压承载力计算方法。研究表明:圆钢管地聚物砖骨料再生混凝土偏压长柱的破坏过程和破坏模态与普通钢管混凝土偏压长柱相似;长柱具有较高的承载力,且其承载力随着砖骨料取代率、偏心率和长细比的增加而降低,其中偏心率对承载力的影响最大;相比无砖骨料取代的长柱,当砖骨料取代率为100%时,长柱承载力下降7.91%,当砖骨料取代率在70%以内时,承载力仅下降1.76%,说明砖骨料取代率对长柱承载力的影响较小。利用所提承载力计算方法得到的计算结果与试验结果相差小于10%,说明该方法可较准确地预测圆钢管地聚物砖骨料再生混凝土长柱的偏压承载力。

关键词：钢管混凝土柱地聚物再生混凝土砖骨料偏压受力性能压弯相关曲线简化计算方法

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后置烧焦管出口新型气固分离器的大型冷模实验

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化学反应工程与工艺 2005年第4期21卷 309-314页

作者：刘显成卢春喜张雪荣时铭显中国石油大学(北京)重质油国家重点实验室北京102249 河北化工医药职业技术学院石家庄050031

后置烧焦管出口的气固分离器是实现 FCC 后置烧焦管式组合再生工艺的关键设备之一,设计并筛选出了一种基于离心与惯性协同作用的新型气固分离器。以 FCC 平衡剂为物料,在大型冷模实验装置上对其进行了性能测试。实验结果表明,该分离器... 详细信息

后置烧焦管出口的气固分离器是实现 FCC 后置烧焦管式组合再生工艺的关键设备之一,设计并筛选出了一种基于离心与惯性协同作用的新型气固分离器。以 FCC 平衡剂为物料,在大型冷模实验装置上对其进行了性能测试。实验结果表明,该分离器不仅结构简单,而且操作也比较平稳,分离效率可达96.6%～99.76%,压降不超过3 237Pa。通过对大量实验数据的回归分析,建立了分离效率及压降的经验模型,模型的预测结果与实验结果吻合较好。

关键词：后置烧焦管催化裂化再生技术气固分离器分离效率压降

A lateral AlGaN/GaN Schottky barrier diode with 0.36-V turn-on voltage and 10-kV breakdown voltage by using double-barrier anode structure

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Chip 2024年第1期3卷 35-42页

作者： Ru Xu Peng Chen xiancheng liu Jianguo Zhao Tinggang Zhu Dunjun Chen Zili Xie Jiandong Ye Xiangqian Xiu Fayu Wan Jianhua Chang Rong Zhang Youdou Zheng The Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and EngineeringNanjing UniversityNanjing 210023China School of Electronic and Information Engineering Nanjing University of Information Science and TechnologyNanjing 210044China Corenergy Semiconductor Incorporation Suzhou 215600China

GaN power electronic devices,such as the lateral AlGaN/GaN Schottky barrier diode(SBD),have received significant attention in recent *** studies have focused on optimizing the breakdown voltage(BV)of the device,with a particular emphasis on achieving ultra-high-voltage(UHV,>10 kV)***,another important question arises:can the device maintain a BV of 10 kV while having a low turn-on voltage(V_(on))?In this study,the fabrication of UHV AlGaN/GaN SBDs was demonstrated on sapphire with a BV exceeding 10 ***,by utilizing a doublebarrier anode(DBA)structure consisting of platinum(Pt)and tantalum(Ta),a remarkably low Von of 0.36 V was *** achievement highlights the great potential of these devices for UHV applications.

关键词： AlGaN/GaN Schottky barrier diode Double-barrier anode Turn-on voltage Ultra-high-voltage

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一种新型气固分离装置结构的优化研究

化学反应工程与工艺 2006年第2期22卷 120-124页

作者：刘显成卢春喜严超宇时铭显中国石油大学(北京)重质油国家重点实验室北京102249

在已有实验的基础上,结合大型冷模实验、流场实验和计算流体力学(CFD)模拟的结果,以压降和分离效率为综合评价指标,对后置烧焦管出口的气固分离器中心排气管位置(偏心)和中心排气管开缝形式进行了考察。结果表明,保持其它尺寸与基准型... 详细信息

在已有实验的基础上,结合大型冷模实验、流场实验和计算流体力学(CFD)模拟的结果,以压降和分离效率为综合评价指标,对后置烧焦管出口的气固分离器中心排气管位置(偏心)和中心排气管开缝形式进行了考察。结果表明,保持其它尺寸与基准型分离器一致而中心排气管改为切向开缝形式的分离器,既能保持分离效率不低于基准型分离器,又能降低压降,在实验条件下压降不超过1 900 Pa,分离效率大于98%

关键词：气同分离器分离效率压降催化裂化再生