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Intrinsic kinetics and external diffusion of catalytic steam gasification of fine coal char particles

Xuantao Wu, Jie Wang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 415-426 doi: 10.1007/s11705-018-1725-8

Abstract: Catalytic steam gasification of fine coal char particles was carried out using a self-made laboratory

Keywords： coal char     catalytic steam gasification     pressure     kinetics     diffusion    

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Effects of pyrolyzed semi-char blend ratio on coal combustion and pollution emission in a 0.35 MW pulverizedcoal-fired furnace

Yonghong YAN, Liutao SUN, Zhengkang PENG, Hongliang QI, Li LIU, Rui SUN

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 78-90 doi: 10.1007/s11708-020-0678-z

Abstract: ratio on combustion and pollution emission characteristics for co-combustion of Shenmu pyrolyzed semi-char(SC), i.e., residuals of the coal pyrolysis chemical processing, and Shenhua bituminous coal (SB) wereinvestigated in a 0.35 MW pilot-scale pulverized coal-fired furnace.The NO concentration was 425 mg/m at 6% O and char burnout was 76.23% for the 45% blend ratio.So, an SC blend ratio of no more than 45% can be suitable for the burning of semi-char.

Keywords： pulverized-coal combustion     pyrolyzed semi-char     ignition characteristics     pollution emission     char burnout    

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Effect of particle size on coal char----NO reaction

Xiumin JIANG, Xiangyong HUANG, Jiaxun LIU, Chaoqun ZHANG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 221-228 doi: 10.1007/s11708-011-0146-x

Abstract: Surface nitrogen complex formation upon reaction of coal char with NO at 600°C was studied by X-ray photoelectronsize had a noticeable effect on the magnitude of changes, which was observed on the surface of the coalchar in the nitrogen functional group.The chemisorption processes of NO molecules on the char were simulated using the ab initio Hartree–Fock

Keywords： NO reduction     chemisorption     particle size     X-ray photoelectron spectroscopy     density functional theory (DFT)    

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Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 373-383 doi: 10.1007/s11705-020-1949-2

Abstract: Mass transfer usually affects the rate of chemical reactions in coal.The effect of internal diffusion on char gasification with CO in the temperature range from 1123 K to1273 K was investigated via thermo-gravimetric analysis and assessment of char morphology features.

Keywords： coal char     CO2 gasification     internal diffusion     pore evolution    

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Effect of Fe on NO release during char combustion in air and O

Ying GU, Xiaowei LIU, Bo ZHAO, Minghou XU

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 200-206 doi: 10.1007/s11708-012-0181-2

Abstract: The chemistry of char was probed by studying nitrogen release under the reactions with air and oxy-fuelThe results show that the particle size of char generated at 1073 K in CO is larger than that in N .However, at 1573 K, it is smaller in CO atmosphere due to particle breaking by gasification of char

Keywords： NO     Fe     char     combustion     CO2    

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Effect of temperature on Lu’an bituminous char structure evolution in pyrolysis and combustion

Yandi ZHANG, Yinhe LIU, Xiaoli DUAN, Yao ZHOU, Xiaoqian LIU, Shijin XU

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 14-25 doi: 10.1007/s11708-020-0805-x

Abstract: In the process of pyrolysis and combustion of coal particles, coal structure evolution will be affectedLu’an bituminous char and ash samples were prepared at the N and air atmospheres respectively acrossA scanning electron microscope (SEM) was used to observe the morphology of char and ash.thermogravimetric analyzer were respectively adopted to obtain the pore structure characteristics of the coalBesides, an X-ray diffractometer (XRD) was applied to investigate the graphitization degree of coal chars

Keywords： bituminous char     pyrolysis     ash     structure evolution     reactivity    

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One-pot three-component Mannich reaction catalyzed by sucrose char sulfonic acid

Qiong XU, Zhigao YANG, Dulin YIN, Jihui WANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 201-205 doi: 10.1007/s11705-009-0052-5

Abstract: Sucrose char sulfonic acid efficiently catalyzed the one-pot three-component Mannich reaction of ketones

Keywords： One–pot synthesis     b-amino ketone     char sulfonic acid     2-acetylpyrazine     catalysis    

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Higher heating value prediction of torrefaction char produced from non-woody biomass

Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 461-471 doi: 10.1007/s11708-015-0377-3

Abstract: The higher heating value of five types of non-woody biomass and their torrefaction char was predictedcarbon and volatile matter had a strong effect on the higher heating value prediction of torrefaction charThe high ash fraction found in torrefied char resulted in a decrease in prediction accuracy.

Keywords： higher heating value     correlation     biomass     proximate analysis     ultimate analysis    

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Status and Suggestion for Modern Coal Chemical Industry and Clean Coal Technology

Xie Kechang

Strategic Study of CAE 2003, Volume 5, Issue 6,   Pages 15-24

Abstract:

The important role of coal played in TPES was described, and the status of modern coal chemical industryand clean coal technologies was analyzed.on the scientific research experiences of the author, strategy and suggestion for the development of coalchemical industry and elcan coal technology in China were proposed.

Keywords： coal chemical industry     clean coal technology     strategy    

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Management and Practice of Large-Scale Modern Coal Enterprises

An Wang

Frontiers of Engineering Management 2014, Volume 1, Issue 1,   Pages 13-17 doi: 10.15302/J-FEM-2014004

Abstract: As the coal-dominated energy structure will remain unchanged in the short term, the sustainable developmentof the coal industry is still serving as one of the foundations for the sound development of the national

Keywords： coal industry     sustainable development     the four-orientation model    

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Managing Innovation: Accelerating the Development of Clean Coal Technology

Ya-juan Sun,Guo-qing Wang,Yan Wang,Ning Zhang,Zhen-qi Zhu

Frontiers of Engineering Management 2015, Volume 2, Issue 1,   Pages 86-92 doi: 10.15302/J-FEM-2015013

Abstract: Coal gasification technology concerns the clean, efficient utilization of coal, providing a core solutionPresently, China is pursuing the development of coal gasification technology despite industry setbacksAs a result, ENN’s Clean Coal Technologies include: Coal Hydro-gasification, Supercritical Coal Gasification, Catalytic Coal Gasification and Underground Coal Gasification, having successfully completed all pilot

Keywords： coal technology     coal gasification     innovation     management     clean     ENN    

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On the fouling mechanism of polysulfone ultrafiltration membrane in the treatment of coal gasification

Xue Zou,Jin Li

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 4,   Pages 490-498 doi: 10.1007/s11705-016-1600-4

Abstract: a polysulfone ultrafiltration membrane with the molecular weight cutoff of 20 kDa to treat crushed coal

Keywords： membrane fouling     ultrafiltration membrane     coal gasification wastewater     rejection coefficient    

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A review on co-pyrolysis of coal and oil shale to produce coke

Xiangchun Liu, Ping Cui, Qiang Ling, Zhigang Zhao, Ruilun Xie

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 504-512 doi: 10.1007/s11705-019-1850-z

Abstract: It has become the top priority for coking industry to rationally use and enlarge coking coal resourcesThis review focuses on the potential utilization of oil shale (OS) as a feedstock for coal-blending cokingIf such OS is directly used for coal-blending coking, the coke product will not meet market demand.Then the exploratory studies on co-pyrolysis of coal with OS, including co-pyrolysis phenomena and processFinally, co-pyrolysis of different ranks of coals with OS in terms of coal-blending coking, where further

Keywords： coal     oil shale     co-pyrolysis     coal blending coking     coke    

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Technology Development and Engineering Practice for Protection and Utilization of Water Resources in Coal

Da-zhao Gu

Frontiers of Engineering Management 2016, Volume 3, Issue 1,   Pages 59-66 doi: 10.15302/J-FEM-2016010

Abstract: , Inner Mongolia, Ningxia, and Gansu (hereafter generally referred as “the Western Area”) are major coal-producingareas in China due to rich coal resources and good mining conditions.The surface evaporation is huge and a great amount of mine water generated in coal mining is evaporatedIn order to protect and utilize the water resources during large-scale coal mining in the Western Areais also extended to other western mining areas, providing an effective path for harmonic mining of coal

Keywords： Western Mining Area     coal mining     water resources     coal mine underground reservoirs    

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Title Author Date Type Operation

Intrinsic kinetics and external diffusion of catalytic steam gasification of fine coal char particles

Xuantao Wu, Jie Wang

Journal Article

Effects of pyrolyzed semi-char blend ratio on coal combustion and pollution emission in a 0.35 MW pulverizedcoal-fired furnace

Yonghong YAN, Liutao SUN, Zhengkang PENG, Hongliang QI, Li LIU, Rui SUN

Journal Article

Effect of particle size on coal char----NO reaction

Xiumin JIANG, Xiangyong HUANG, Jiaxun LIU, Chaoqun ZHANG

Journal Article

Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Journal Article

Effect of Fe on NO release during char combustion in air and O

Ying GU, Xiaowei LIU, Bo ZHAO, Minghou XU

Journal Article

Effect of temperature on Lu’an bituminous char structure evolution in pyrolysis and combustion

Yandi ZHANG, Yinhe LIU, Xiaoli DUAN, Yao ZHOU, Xiaoqian LIU, Shijin XU

Journal Article

One-pot three-component Mannich reaction catalyzed by sucrose char sulfonic acid

Qiong XU, Zhigao YANG, Dulin YIN, Jihui WANG

Journal Article

Higher heating value prediction of torrefaction char produced from non-woody biomass

Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG

Journal Article

Innovative approach of low carbon and efficient utilization of coal resources: The polygeneration systemof a combination of the gasified coal gas and the pyrolyzed coal gas to form the synthetic gas

Kechang XIE, Fan LI

Journal Article

Status and Suggestion for Modern Coal Chemical Industry and Clean Coal Technology

Xie Kechang

Journal Article

Management and Practice of Large-Scale Modern Coal Enterprises

An Wang

Journal Article

Managing Innovation: Accelerating the Development of Clean Coal Technology

Ya-juan Sun,Guo-qing Wang,Yan Wang,Ning Zhang,Zhen-qi Zhu

Journal Article

On the fouling mechanism of polysulfone ultrafiltration membrane in the treatment of coal gasification

Xue Zou,Jin Li

Journal Article

A review on co-pyrolysis of coal and oil shale to produce coke

Xiangchun Liu, Ping Cui, Qiang Ling, Zhigang Zhao, Ruilun Xie

Journal Article

Technology Development and Engineering Practice for Protection and Utilization of Water Resources in Coal

Da-zhao Gu

Journal Article