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Review on research and development of oxy-coal burner for carbon capture

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science {1.(Technological sciences) 2024年第3期67卷 647-672页

作者： GUO JunJun LIU JingZhang ZHANG Tai HU Fan LI pengfei LIU {1.Hui {2. chuguang state Key Laboratory of {1. {2. School of Energy and Power EngineeringHuazhong University of Science and Technology Wuhan 430074China CCRC King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100049China university of Chinese Academy of {1.s Beijing 100049China National Key Laboratory of High Efficiency and Low Carbon Utilization of coal Beijing 100049China Institute of Energy Research Jiangxi Academy of SciencesNanchang 330096China Carbon Neutrality Research Center of Jiangxi Province Nanchang 330096China Faculty of Engineering China University of Geosciences(Wuhan)Wuhan 430074China National Energy Research and Development Center of Clean and Low Carbon coal-based Power Generation Technologies Wuhan 430074China

In the past two decades, the oxy-fuel combustion of pulverized {1. has been extensively developed, leading to the completion of several large industrial pilot oxy-fuel plants worldwide. Various types of oxy-fuel burners have been designed and tested in largescale pilot plants as key components of oxy-fuel combustion. These burners face major challenges in terms of their flame stability because of their decreasing stream momentum ratio and increasing carbon dioxide concentration. However, it offers flexibility in adjusting the oxygen concentration in each burner stream. This study aims to provide a comprehensive review of the state-of-the-art knowledge on oxy-{1. burner design and operation in power plants. First, the combustion characteristics under oxy-fuel conditions are briefly introduced. Subsequently, the principal requirements and fundamental parameters of the oxy-{1. burners are discussed. The development process of oxy-fuel burners is also presented. Moreover, a compatible design strategy and scaling-up techniques are described for oxy-{1. burners developed by the authors over the past ten years. The performances of oxy-{1. burners in three large pilot oxy-fuel plants worldwide are summarized and compared. Finally, concluding remarks are provided and potential research needs are suggested.

关键词： carbon capture oxy-fuel combustion oxy-fuel burner pulverized coal compatible design

Technical-economic evaluation of O_2.CO_2.recycle combustion power plant based on life-cycle

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science {1.(Technological sciences) 2010年第12期53卷 3284-3293页

作者： WANG Yun, zhao YongChun, ZHANG JunYing & {1. {2. state Key Laboratory of coal combustion, huazhong university of science and technology, wuhan 430074, china 1. state Key Laboratory of {1. combustion Huazhong University of Science and Technology Wuhan 430074 China

In this study, a detailed technical-economic analysis on a O2.CO2.recycle combustion power plant (Oxy-combustion plant) retrofitted from the existing {2.-fired plant (with a capacity of 2.300 MW) in china was carried out by using life cycle assessment (LCA) and life cycle cost (LCC) method. The CO2.emissions, investment cost, cost of electricity and CO2.avoidance cost within the life cycle were calculated respectively. The results showed that the CO2.emission avoidance rate of retrofitted Oxy-combustion plant in the life cycle was about 77.09% without taking account of the CO2.compression; the annual cost increased by 5.9% approximately, the net power decreased by 2.5}33%, the cost of electricity increased by 34.77%, and the CO2.avoidance cost was about 2..93 USD/t. Considering the compression process of CO2. the avoidance rate of CO2.emission was about 73.35% or so; the annual cost increased by 9.35% approximately, the net power decreased by about 2..70%, the cost of electricity increased by 49.1.%, and the CO2.avoidance cost was about 45.46 USD/t. The carbon tax (the CO2.tax) should be more than about 2. USD/t and 34 USD/t under the condition of considering CO2.compression or not, respectively, which is beneficial to promote transformation of existing {2.-fired plant for reducing the CO2.emissions.

关键词： life cycle assessment coal-fired power plant O2.CO2 recycle combustion technology cost of electricity CO2 avoidance cost

Review of soot measurement in hydrocarbon-air flames

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science {1.(Technological sciences) 2010年第8期53卷 2129-2141页

作者： LOU Chun,CHEN Chen,SUN YiPeng&ZHOU HuaiChun state Key Laboratory of {1. {2.,huazhong university of science and technology,wuhan 430074,china 1. state Key Laboratory of {1. combustion Huazhong University of Science and Technology Wuhan 430074 China

Soot,which is produced in fuel-rich parts of flames as a result of incomplete combustion of hydrocarbons,is the No.2.contributor to global warming after carbon *** soot measurement techniques is important to understand soot formation mechanism and control soot *** various soot measurement techniques,such as thermophoretic sampling par-ticles diagnostics followed by electron microscopy analysis,thermocouple particle densitometry,light extinction,laser-induced incandescence,two-color method,and emission computed tomography,are reviewed in this *** measurement principle and application cases of these measurement methods are described in *** development trend of soot measurement is to realize the on-line measurement of multi-dimensional distributions of temperature,soot volume fraction,soot particle size and other parameters in hydrocarbon-air *** measurement techniques suitable for both small flames in laboratories and large-scale flames in industrial combustion devices should be ***,in some special situations,such as high-pressure,zero gravity and micro-gravity flames,soot measurement also should be provided.

关键词： hydrocarbon-air flames combustion measurement soot laser-induced incandescence emission CT

Element geochemistry and cleaning potential of the No. 1. coal seam from Antaibao mining district

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science {1. Earth sciences 2005年第12期48卷 2142-2154页

作者： WANG Wenfeng1. QIN Yong1. SONG Dangyu2. SANG Shuxun1. JIANG Bo1. ZHU Yanming1.& FU Xuehai1.1. College of Resources & Geosciences, {1. university of Mining and technology, Xuzhou 2.1.08, {1. 2. state Key Laboratory of coal combustion, huazhong university of science and technology, wuhan 430074, {1. 1. College of Resources & Geosciences China University of Mining and Technology 221008 Xuzhou China 2. state Key Laboratory of {1. {2. Huazhong University of Science and Technology 430074 Wuhan China

Based on the analyses of sulfur and 41.other elements in 8 channel samples of the No. 1. {2. seam from Antaibao surface mine, Shanxi, {1. and 4 samples from the {2. preparation plant of this mine, the distribution of the elements in the seam profile, their geo-chemical partitioning behavior during the {2. cleaning and the genetic relationships between the both are studied. The conclusions are drawn as follows. The {2.-forming environment was probably invaded by sea water during the post-stage of peatification, which results in the fact that the contents of As, Fe, S, etc. associated closely with sea water tend to increase toward the top of the seam, and that the kaolinite changes into illite and montmorillonite in the {2.-sublayer near the roof. These elements studied are dominantly associated with kaolinite, pyrite, illite, montmorillonite, etc., of which the As, Pb, Mn, Cs, Co, Ni, etc. are mainly associated with sulfides, the Mo, V, Nb, Hf, REEs, Ta etc. mainly with kaolintie, the Mg, Al etc. mainly with epigenetic montmorillonite, and the Rb, Cr, Ba, Cu, K, Hg, etc. mainly with epigenetic illite. The physical {2. cleaning is not only effective in the removal of ash and sulfur, but also in reducing the concentra-tion of most major and trace elements. The elements Be, U, Sb, W, Br, Se, P, etc. are largely or partly organically bound showing a relatively low removability, while the removability of the other elements studied is more than 2.%, of which the Mg, Mn, Hg, Fe, As, K, Al, Cs, and Cr associ-ated mostly with the coarser or epigenetic minerals show a higher removability than that of ash. The distribution of the elements in the seam profile controls their partitioning behavior to a great degree during the {2. cleaning processes.

关键词： Antaibao mining district, No.1. coal seam, element geochemistry, cleaning.

Experimental and modeling study of NO emission under high CO_2.concentration

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science {1.(Technological sciences) 2010年第12期53卷 3275-3283页

作者： zhao Ran, LIU Hao, HU Han, ZHONG XiaoJiao, WANG ZiJian, XU ZhiYing & QIU JianRong {1. Key Laboratory of {2. combustion, huazhong university of science and technology, wuhan, 430074, china 1. state Key Laboratory of {1. combustion Huazhong University of Science and Technology Wuhan 430074 China

An experimental and numerical study of the NOx formation and reduction process in a designed coal {1. furnace under both traditional air atmosphere and O2.CO2.atmosphere was conducted, in an attempt to explore the chemistry mechanism of the experimentally observed NOx suppression under high CO2.concentration atmospheres. A simplified ‘chemically oriented’ approach, computational fluid dynamics (CFD)-chemical kinetics modeling method, was validated and used to model the experimental process. The high CO2.concentration’s chemical effect on NO reduction has been studied, and the differences in NOx reaction behaviors between O2.CO2.atmosphere and air atmosphere were analyzed by detailed chemical kinetic model. On the basis of investigations through elementary chemical reactions, it can be concluded that high CO2.concentration plays an important role on NOx conversion process during oxy-fuel {1.. Moreover, the dominant reaction steps and the most important reactions for NO conversion under different atmospheres were discussed. Under O2.CO2.atmosphere, the main active sequence for NO reaction includes: NO→N→N2. and the main active path for NO reaction under air atmosphere is through N2.N→NO.

关键词： coal combustion chemical kinetics carbon dioxide nitric oxide

A fundamental research on combustion chemical kinetic model's precision property

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science {1.(Technological sciences) 2010年第8期53卷 2222-2227页

作者： zhao Ran ,LIU Hao,HU Han,YAN ZhiQiang,WANG XiaoFeng, KONG FanHai&QIU JianRong {1. Key Laboratory of {2. combustion,huazhong university of science and technology,wuhan 430074,china 1. state Key Laboratory of {1. combustion Huazhong University of Science and Technology Wuhan 430074 China

Uncertainty analysis was used to investigate the precision property of detailed chemical kinetic models.A general-purpose algorithm for assessing and evaluating the impact of uncertainties in chemical kinetic models is *** method was also validated through analysis of different kinetic mechanisms applied in the process of modeling NOx emission in methane flame. The algorithm,which provided a basis for further studies,was more efficient and general compared with other methods.

关键词： chemical kinetics uncertainty analysis precision nitric oxide

Achieving Narrowed Bandgaps and Blue-Light Excitability in Zero-Dimensional Hybrid Metal Halide Phosphors via Introducing Cation-Cation Bonding

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Energy & Environmental Materials 2024年第1期7卷 294-300页

作者： pengfei Fu Shining Geng Ruixiang Mi Ranyun Wu Guangya {1. Binbin Su Zhiguo Xia Guangda Niu Jiang Tang Zewen Xiao wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China The state Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesSchool of Materials Science and TechnologySouth China University of TechnologyGuangzhou 510640China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China

Zero-dimensional(0D)hybrid metal halides,which consist of organic cations and isolated inorganic metal halide anions,have emerged as phosphors with efficient broadband ***,these materials generally have too wide bandgaps and thus cannot be excited by blue light,which hinders their applications for efficient white light-emitting diodes(WLEDs).The key to achieving a blue-light-excitable 0D hybrid metal halide phosphor is to reduce the fundamental bandgap by rational chemical *** this work,we report two designed hybrid copper(I)iodides,(Ph_(3)MeP)_(2.Cu_(4)I_(6)and(Cy_(3)MeP)_(2.Cu_(4)I_(6),as blue-light-excitable yellow phosphors with ultrabroadband *** these compounds,the[Cu_(4)I_(6)]^(2.)anion forms an I6 octahedron centered on a cationic Cu_(4)*** strong cation-cation bonding within the unique cationic Cu_(4)tetrahedra enables significantly lowered conduction band minimums and thus narrowed bandgaps,as compared to other reported hybrid copper(I)*** ultrabroadband emission is attributed to the coexistence of free and self-trapped *** WLED using the[Cu_(4)I_(6)]^(2.)anion-based single phosphor shows warm white light emission,with a high luminous efficiency of 65 Im W^(-1.and a high color rendering index of *** work provides strategies to design narrow-bandgap 0D hybrid metal halides and presents two first examples of blue-light-excitable 0D hybrid metal halide phosphors for efficient WLEDs.

关键词： blue-light-excitable cation-cation bonding hybrid metal halide phosphor zero-dimensional

Shape Character of Fusion-solidification Zone of EBW Joints for Titanium Alloy

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稀有金属材料与工程 2011年第S4期40卷 74-78页

作者： Fu pengfei1,2.Mao Zhiyong2.Wang Yajun3,Gong Shuili2.Liu xin2.1School of Materials {2. and Engineering,huazhong university of science and technology,wuhan 430074,china 2.2. and technology on Power Beam Processes Laboratory,Beijing Aeronautical Manufacturing technology Research Institute,Beijing 10002.,china3School of Mechanical Engineering and Automation,Beijing university of Aeronautics and Astronautics,Beijing 100191,china Beijing Aeronaut Mfg Technol Res Inst Sci & Technol Power Beam Proc Lab Beijing 100024 Peoples R China huazhong Univ Sci & Technol Sch Mat Sci & Engn Wuhan 430074 Peoples R China Beijing Univ Aeronaut & Astronaut Sch Mech Engn & Automat Beijing 100191 Peoples R China

Shape character of fusion-solidification zone of electron beam welding (EBW) joints was studied for TC4 *** typical shapes of the fusion-solidification zone were gained by appropriate welding *** shapes and dimensions of the fusion-solidification zone of TC4 titanium joints were apparently influenced by processing parameters,focusing state and power density *** on the analyses of processing parameters,focusing state and power density distribution,the integrated parameters of n{2.and n2.were put forward,which represented the distribution and intensity of electron beam *** a series of the formulations are developed to predict the shape of fusion-solidification zone by the processing parameters.

关键词： electron beam welding (EBW) titanium alloy fusion-solidification zone mathematical model

The combustion Synthesis Process of Al-Ti-C System in an Elevated-temperature Al-melt

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Journal of wuhan {1. of {2.(Materials science) 2002年第2期17卷 10-13页

作者：严有为 FUzheng-yi YUANRun-zlmng huazhong{1.of{2.andtechnology wuhan{1.of{2.

One of the main disadvantages of combustion synthesis of ceramic/metal composite materials is the relatively high level of porosity present in the products. To synthesize TiC/Al composites with a dense structure, this paper proposes a novel application of an elevated-temperature Al-melt to directly ignite and simultaneously infiltrate Al-Ti-C preform dipped in the melt. The emphasis was placed on the combustion synthesis process and mi-crostructural evolution of the preform in the melt, by a liquid quenching test combined with the measurement of the temperature history of the dipped preform. The results show that the combustion synthesis process of the preform in the elevated-temperature melt involves a series of reactions, and that higher temperature of the melt is favourable for the formation of TiC. The synthesized TiC/Al composites exhibit a dense structure, which is attributed to the infiltration of the melt into the preform.

关键词： combustion synthesis TiC/Al composites infiltration Al - melt