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NOx and H2S formation in the reductive zone of air-staged combustion ofpulverized blended coals

Jinzhi CAI, Dan LI, Denggao CHEN, Zhenshan LI

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 4-13 doi: 10.1007/s11708-020-0804-y

Abstract: Low NO combustion of blended coals is widely used in coal-fired boilers in China to control NO emissionBoth the CO and H S concentrations inblended coal combustion increase with an increase in the combustionBased on accumulated experimental data, one interesting finding was that NO and H S from blended coalcombustion were almost directly dependent on the CO concentration, and the CO concentration of the blendedcharacteristics from blended coal combustion can be well predicted by single char gasification kinetics

Keywords： blended coal combustion     NOx formation     H2S formation     air staged combustion    

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Study on combustion characteristics of blended coals

LI Yonghua, WANG Chunbo, CHEN Hongwei

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 96-100 doi: 10.1007/s11708-007-0010-1

Abstract: Power plants in China have to burn blended coal instead of one specific coal for a variety of reasonsSo it is of great necessity to investigate the combustion of blended coals.system and flue gas online analysis system, characteristics such as burnout, slag, and pollution of some blendedThe results show that the blending of coal has some effect on NO but there is no obvious rule.SO emission can be reduced by blending low sulfur coal.

Keywords： combustion     capacity     variety     blended     burnout    

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Comparison of combustion characteristics of petroleum coke and coal in one-dimensional furnace

Qulan ZHOU, Qinxin ZHAO, Guangjie ZHOU, Huiqing WANG, Tongmo XU, Shien HUI,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 436-442 doi: 10.1007/s11708-009-0059-0

Abstract: effect of primary air fraction , outer secondary air swirl strength and excess oxygen coefficient on the combustioncharacteristics of petroleum coke, Hejin lean coal and Shenmu soft coal are researched on a one-dimensionaland petroleum coke increase, and the combustion worsens in the earlier stage, but the burn-out rateof Shenmu soft coal is improved.The increase in excess oxygen coefficient delays the ignition of petroleum coke, worsens the combustion

Keywords： petroleum coke     Shenmu soft coal     Hejin lean coal     combustion characteristics     experimental research    

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Modeling of single coal particle combustion in O

Xiehe YANG, Yang ZHANG, Daoyin LIU, Jiansheng ZHANG, Hai ZHANG, Junfu LYU, Guangxi YUE

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 99-111 doi: 10.1007/s11708-020-0685-0

Abstract: A one-dimensional transient single coal particle combustion model was proposed to investigate the characteristicsof single coal particle combustion in both O /N and O /CO atmospheres under the fluidized bed combustionhomogeneous reactions integrated with the heat and mass transfer from the fluidized bed environment to the coalThe modeling results demonstrated that the carbon conversion rate of a single coal particle (diameter

Keywords： coal     oxy-fuel     fluidized bed     combustion     simulation    

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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: The effects of blend ratio on combustion and pollution emission characteristics for co-combustion ofShenmu pyrolyzed semi-char (SC), i.e., residuals of the coal pyrolysis chemical processing, and Shenhuabituminous coal (SB) were investigated in a 0.35 MW pilot-scale pulverized coal-fired furnace.The effects on the combustion characteristics may be neglected when the blend ratio is less than 30%.great changes in combustion characteristics.

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

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Dynamic modelling and simulation of a post-combustion CO capture process for coal-fired power plants

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 198-209 doi: 10.1007/s11705-021-2057-7

Abstract: Solvent-based post-combustion capture technologies have great potential for CO2 mitigationin traditional coal-fired power plants.Composed by a series of partial differential equations, first-principle post-combustion capture modelsproperties and simplify the chemical and physical process, based on which a universal and hybrid post-combustion

Keywords： CO2 capture     post-combustion capture     simulation     dominant factor    

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Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 66-76 doi: 10.1007/s11783-012-0428-5

Abstract: of five types of coal of varying organic maturity and two types of biomass briquettes under residentialThe dominant NMVOC species identified in coal smoke were carbonyls (41.7%), followed by C2 unsaturatedBoth combustion efficiency and coal organic maturity had a significant impact on NMVOC s from burningcoal: NMVOC emissions increased with increasing coal organic maturity but decreased as the combustionprocess, with low combustion efficiency.

Keywords： residential combustion     coal     crop residue briquette     emission factors     gaseous carbonaceous species    

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Numerical simulation of combustion characteristics at different coal concentrations in bituminous coal

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Yiquan XIE, Lingyan ZENG

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 255-262 doi: 10.1007/s11708-013-0255-9

Abstract: numerical simulations were performed using Fluent 6.3.26 to study the progress of ignition for four coalSimulations for a coal concentration of 0.40 kg/kg corresponding to a single burner operating at itsand at the first and second combustion chamber exits decreased at the equivalent radial points.At the center of the second combustion chamber exit, the O concentrations were almost depleted for thefive coal concentrations, while the CO concentrations peaked.

Keywords： numerical simulation     tiny-oil ignition burner     pulverized coal     temperature field    

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The development of pollution control technology in coal combustion in China

XU Xuchang, ZHANG Hu, ZHUO Yuqun, TONG Huiling, WANG Shujuan, LI Yan

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 9-15 doi: 10.1007/s11708-007-0002-1

Abstract: The recent development of coal combustion pollution control technologies in China, including desulphurizationThe key points of future research and development in coal combustion pollution control, e.g., combined

Keywords： development     CO emission     desulphurization     future research     emission    

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Combustion effects and emission characteristics of SO

Yiying JIN,Yangyang LI,Fuqiang LIU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 201-210 doi: 10.1007/s11783-014-0739-9

Abstract: The influences of dewatered sludge blending ratio in coal on flammability index (C) and combustion characteristicThe impact on combustion characteristics could be ignored if less than 20% of dewatered sludge was addedin coal.It was shown that the characteristics of coal and sludge, as well as the volatilization of heavy metals

Keywords： sewage sludge     combustion characteristic     coal     emission     heavy metals    

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Numerical simulation of bituminous coal combustion in a full-scale tiny-oil ignition burner: influence

Zhengqi LI, Chunlong LIU, Xiang ZHANG, Lingyan ZENG, Zhichao CHEN

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 296-303 doi: 10.1007/s11708-012-0191-0

Abstract: concentrations for the four excess air ratios were 0.5%, 1.1%, 0.9% and 3.0% at the exit of the second combustionwith values of 7.9%, 9.9%, 11.3% and 10.6% for the four excess air ratios at the exit of the second combustion

Keywords： numerical simulation     tiny-oil ignition burner     pulverized coal     temperature field    

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A critical review of ash slagging mechanisms and viscosity measurement for low-rank coal and bio-slags

Md Tanvir ALAM, Baiqian DAI, Xiaojiang WU, Andrew HOADLEY, Lian ZHANG

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 46-67 doi: 10.1007/s11708-020-0807-8

Abstract: Gasification or combustion of coal and biomass is the most important form of power generation today.However, the use of coal/biomass at high temperatures has an inherent problem related to the ash generatedof the furnace, gasifier, or boiler and is detrimental as it reduces the heat transfer rate, and the combustionpaper reviews the content, compositions, and melting characteristics of ashes in differently ranked coalMoreover, it discusses the slagging behavior of different ranks of coal and biomass by examining the

Keywords： slag     viscosity     biomass     low-rank coal     combustion     gasification    

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Impacts of climate change on optimal mixture design of blended concrete considering carbonation and chloride

Xiao-Yong WANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 473-486 doi: 10.1007/s11709-020-0608-5

Abstract: Many studies on the mixture design of fly ash and slag ternary blended concrete have been conducted.This study presents a procedure for the optimal mixture design of ternary blended concrete consideringThird, illustrative examples are shown for mixture design of ternary blended concrete.The analysis results show that for ternary blended concrete exposed to an atmospheric environment, arich mix is necessary to meet the challenge of climate change, and for ternary blended concrete exposed

Keywords： ternary blended concrete     climate change     optimal mixture design     carbonation     chloride ingress    

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Iterative finite element model of nonlinear viscoplastic analyses for blended granular porous media

WU Yuching, ZHU Cimian

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 464-473 doi: 10.1007/s11709-007-0063-6

Abstract: The iterative finite element model, in which an element is used to represent a single particle, is generated to analyze the global behavior of multiple-material aggregates of materially nonlinear viscoplastic particles. The genera

Keywords： nonlinear viscoplastic     iterative     behavior     multiple-material    

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Experimental studies of ash film fractions based on measurement of cenospheres geometry in pulverized coalcombustion

Siqi LIU, Yanqing NIU, Liping WEN, Yang LIANG, Bokang YAN, Denghui WANG, Shi’en HUI

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 91-98 doi: 10.1007/s11708-020-0806-9

Abstract: In pulverized coal particle combustion, part of the ash forms the ash film and exerts an inhibitory influenceon combustion by impeding the diffusion of oxygen to the encapsulated char core, while part of the ashDespite the considerable ash effects on combustion, the fraction of ash film still remains unclear.the fraction determination, being aware that the formation of cenospheres is based on the model of coalIn this paper, the Huangling bituminous coal with different sizes was burnt in a drop-tube furnace at

Keywords： ash film fraction     cenospheres     coal combustion     fly ash    

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Title Author Date Type Operation

NOx and H2S formation in the reductive zone of air-staged combustion ofpulverized blended coals

Jinzhi CAI, Dan LI, Denggao CHEN, Zhenshan LI

Journal Article

Study on combustion characteristics of blended coals

LI Yonghua, WANG Chunbo, CHEN Hongwei

Journal Article

Comparison of combustion characteristics of petroleum coke and coal in one-dimensional furnace

Qulan ZHOU, Qinxin ZHAO, Guangjie ZHOU, Huiqing WANG, Tongmo XU, Shien HUI,

Journal Article

Modeling of single coal particle combustion in O

Xiehe YANG, Yang ZHANG, Daoyin LIU, Jiansheng ZHANG, Hai ZHANG, Junfu LYU, Guangxi YUE

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

Dynamic modelling and simulation of a post-combustion CO capture process for coal-fired power plants

Journal Article

Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Journal Article

Numerical simulation of combustion characteristics at different coal concentrations in bituminous coal

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Yiquan XIE, Lingyan ZENG

Journal Article

The development of pollution control technology in coal combustion in China

XU Xuchang, ZHANG Hu, ZHUO Yuqun, TONG Huiling, WANG Shujuan, LI Yan

Journal Article

Combustion effects and emission characteristics of SO

Yiying JIN,Yangyang LI,Fuqiang LIU

Journal Article

Numerical simulation of bituminous coal combustion in a full-scale tiny-oil ignition burner: influence

Zhengqi LI, Chunlong LIU, Xiang ZHANG, Lingyan ZENG, Zhichao CHEN

Journal Article

A critical review of ash slagging mechanisms and viscosity measurement for low-rank coal and bio-slags

Md Tanvir ALAM, Baiqian DAI, Xiaojiang WU, Andrew HOADLEY, Lian ZHANG

Journal Article

Impacts of climate change on optimal mixture design of blended concrete considering carbonation and chloride

Xiao-Yong WANG

Journal Article

Iterative finite element model of nonlinear viscoplastic analyses for blended granular porous media

WU Yuching, ZHU Cimian

Journal Article

Experimental studies of ash film fractions based on measurement of cenospheres geometry in pulverized coalcombustion

Siqi LIU, Yanqing NIU, Liping WEN, Yang LIANG, Bokang YAN, Denghui WANG, Shi’en HUI

Journal Article