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Study on the NOx release rule along the boiler during pulverized coal combustion

JIN Jing, ZHANG Zhongxiao, LI Ruiyang

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 91-95 doi: 10.1007/s11708-007-0009-7

Abstract: Numerical simulation and experimental study on NO release along the boiler during pulverized coal combustionNO emission increased with the increase of nitrogen content of coal.There existed a critical average diameter of the pulverized coal ().If "d, NO emission reduced with the decrease of pulverized coal size.If >, NO emission reduced with the increase of the pulverized coal size.
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Optimization of Venturi tube design for pipeline pulverized coal flow measurements

WU Zhansong, XIE Fei

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 369-373 doi: 10.1007/s11708-008-0072-8

Abstract: A Venturi flow meter was designed to accurately measure the mass flow rate of pulverized coal in powerFurthermore, the geometries of three types of Venturi tubes were optimized for an experimental study of pulverizedcoal mass flow rate measurements.

Keywords： gas-solid two-phase     geometry     gas-particle two-phase     Numerical     flow    

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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: ., residuals of the coal pyrolysis chemical processing, and Shenhua bituminous coal (SB) were investigatedin a 0.35 MW pilot-scale pulverized coal-fired furnace.

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

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Influence of mass air flow ratio on gas-particle flow characteristics of a swirl burner in a 29 MW pulverizedcoal boiler

Rong YAN, Zhichao CHEN, Shuo GUAN, Zhengqi LI

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 68-77 doi: 10.1007/s11708-020-0697-9

Abstract: anemometer was used to measure the characteristics of gas/particle two-phase flows in a 29 megawatt (MW) pulverizedcoal industrial boiler equipped with a new type of swirling pulverized coal burner.

Keywords： industrial pulverized coal boiler     swirl burner     air/particle flow     particle dynamic analyzer (PDA)    

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Experimental studies of ash film fractions based on measurement of cenospheres geometry in pulverizedcoal combustion

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 influencethe fraction determination, being aware that the formation of cenospheres is based on the model of coalThe fraction of ash film is the ratio of the measuring mass of ash film and the total ash in coal particleIn this paper, the Huangling bituminous coal with different sizes was burnt in a drop-tube furnace atincreases with increasing temperature and carbon conversion ratio but decreases with larger sizes of coal

Keywords： ash film fraction     cenospheres     coal combustion     fly ash    

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NO control in large-scale power plant boilers through superfine pulverized coal technology

YIN Jie, WEI Dunsong, YIN Jie, REN Jianxing

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 461-465 doi: 10.1007/s11708-008-0057-7

Abstract: Superfine pulverized coal technology can effectively reduce NO emission in coal-fired power plant boilersSuperfine pulverized coal technology, which will be widely used in China, includes common superfine pulverizedcoal technology and superfine pulverized coal reburning technology.The use of superfine pulverized coal instead of common coal in large-scale power plants will not only
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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 itsAs gas flowed to the burner nozzle, the high-temperature region expanded, ensuring a successful pulverized-coalWith increasing coal concentration (0.08–0.40 kg/kg), the gas temperature along the burner centerlinecenter of the second combustion chamber exit, the O concentrations were almost depleted for the five coal

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

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Techno-economic assessment of pulverized coal boilers and IGCC power plants with CO 2 capture

Y. HUANG, S. REZVANI, D. McILVEEN-WRIGHT, N. HEWITT, J. MONDOL, A. MINCHENER,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 196-206 doi: 10.1007/s11705-009-0237-y

Abstract: Pulverized coal boilers (PC) have, however, proven high technical performance attributes and are economically

Keywords： breakeven electricity     ECLIPSE     technical performance     appropriate     economic    

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NOx and H2S formation in the reductive zone of air-staged combustion of pulverized

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 emissionExperiments with Zhundong (ZD) and Commercial (GE) coal and their blends with different mixing ratiosBlending ZD into GE was found to increase not only the coal conversion but also the concentrations ofBoth 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 coal

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

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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: The progression of ignition was numerically simulated with the aim of realizing a full-scale tiny-oil ignition burner that is identical to the burner used in an 800 MWe utility boiler. The numerical simulations were conducted for four excess air ratios, 0.56, 0.75, 0.98 and 1.14 (corresponding to primary air velocities of 17, 23, 30 and 35 m/s, respectively), which were chosen because they had been used previously in practical experiments. The numerical simulations agreed well with the experimental results, which demonstrate the suitability of the model used in the calculations. The gas temperatures were high along the center line of the burner for the four excess air ratios. The flame spread to the burner wall and the high-temperature region was enlarged in the radial direction along the primary air flow direction. The O concentrations for the four excess air ratios were 0.5%, 1.1%, 0.9% and 3.0% at the exit of the second combustion chamber. The CO peak concentration was very high with values of 7.9%, 9.9%, 11.3% and 10.6% for the four excess air ratios at the exit of the second combustion chamber.

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

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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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Title Author Date Type Operation

Study on the NOx release rule along the boiler during pulverized coal combustion

JIN Jing, ZHANG Zhongxiao, LI Ruiyang

Journal Article

Optimization of Venturi tube design for pipeline pulverized coal flow measurements

WU Zhansong, XIE Fei

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

Influence of mass air flow ratio on gas-particle flow characteristics of a swirl burner in a 29 MW pulverizedcoal boiler

Rong YAN, Zhichao CHEN, Shuo GUAN, Zhengqi LI

Journal Article

Experimental studies of ash film fractions based on measurement of cenospheres geometry in pulverizedcoal combustion

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

Journal Article

NO control in large-scale power plant boilers through superfine pulverized coal technology

YIN Jie, WEI Dunsong, YIN Jie, REN Jianxing

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

Techno-economic assessment of pulverized coal boilers and IGCC power plants with CO 2 capture

Y. HUANG, S. REZVANI, D. McILVEEN-WRIGHT, N. HEWITT, J. MONDOL, A. MINCHENER,

Journal Article

NOx and H2S formation in the reductive zone of air-staged combustion of pulverized

Jinzhi CAI, Dan LI, Denggao CHEN, Zhenshan LI

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

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