A study of combustion behavior of pulverized coal in high-temperature air

Aimed at improving the utilization of pulverized coal, high-temperature heat pipe technology was introduced into lignite carbonization.Under the design of power of 10kw semi-industrial pulverized coal carbonization test equipment, Fugu lignite coal as raw material to investigate the operating characteristics of the device and carbonization characteristics. Experimental result shows that the high temperature heat pipes heat steadily and meet the temperature requirement of low-temperature carbonization. With the extension of the holding time, the semi-coke fixed carbon content increasing, but volatile matter vice versa, however, holding time above 60 minutes, the effect of carbonization is not obvious, and the best carbonization time is 30 ~ 60 minutes. The length of the holding time has little effect on gas composition, the content of H2 and CH4 are relatively higher than the rest gas, (H2 + CH4) gas accounted for 70% of the total, the heating value remains at 18.76 ~ 19.22MJ/m3, belongs to medium-high value gas, could provide for industrial and civilian use.

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Combustion Behavior of Pulverized Coal Injection in Corex Melter Gasifier

3rd International Symposium on High-Temperature Metallurgical Processing ◽

10.1002/9781118364987.ch45 ◽

2012 ◽

pp. 365-372

Author(s):

Shengfii Zhang ◽

Feng Zhu ◽

Chenguang Bai ◽

Liangying Wen ◽

Guibao Qiu ◽

...

Keyword(s):

Pulverized Coal ◽

Combustion Behavior ◽

Pulverized Coal Injection ◽

Coal Injection ◽

Corex Melter Gasifier

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Heterogeneous reaction of N2O and formation of NO with coal char in the simulated air-staged combustion atmosphere of pulverized coal at high temperature

Fuel ◽

10.1016/j.fuel.2020.119856 ◽

2021 ◽

Vol 289 ◽

pp. 119856

Author(s):

Songlin Liu ◽

Weidong Fan ◽

Xiaofeng Wu ◽

Jun Chen ◽

Zhuang Liu ◽

...

Keyword(s):

High Temperature ◽

Heterogeneous Reaction ◽

Coal Char ◽

Pulverized Coal ◽

Staged Combustion ◽

Combustion Atmosphere

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Combustion Behavior of Pulverized Coal in a Raceway Cavity of Blast Furnace and a Large Amount Injection Technology

Tetsu-to-Hagane ◽

10.2355/tetsutohagane1955.78.1_50 ◽

1992 ◽

Vol 78 (1) ◽

pp. 50-57 ◽

Cited By ~ 1

Author(s):

Yotaro OHNO ◽

Takeshi FURUKAWA ◽

Masahiro MATSUURA

Keyword(s):

Blast Furnace ◽

Pulverized Coal ◽

Combustion Behavior ◽

Injection Technology

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Numerical Simulation of Pulverized Coal Combustion Behavior in the Traditional Blast Furnace and Oxygen Blast Furnace

TMS 2014: 143rd Annual Meeting & Exhibition ◽

10.1007/978-3-319-48237-8_135 ◽

2014 ◽

pp. 1133-1140

Author(s):

Jinzhou Liu ◽

Shiyang Zhang ◽

Xuefeng She ◽

Jingsong Wang ◽

Lin Lin ◽

...

Keyword(s):

Numerical Simulation ◽

Blast Furnace ◽

Coal Combustion ◽

Pulverized Coal ◽

Pulverized Coal Combustion ◽

Combustion Behavior ◽

Oxygen Blast Furnace ◽

Oxygen Blast

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Investigation on Pulverized Coal Combustion Behavior by Non-Isothermic Integral Thermogravimetry Method

Journal of Iron and Steel Research International ◽

10.1016/s1006-706x(11)60095-2 ◽

2011 ◽

Vol 18 (8) ◽

pp. 1-8 ◽

Cited By ~ 8

Author(s):

Cheng-lin Qi ◽

Jian-liang Zhang ◽

Xiang-hai Lin ◽

Qin-yuan Liu ◽

Xiao-liu Wang

Keyword(s):

Coal Combustion ◽

Pulverized Coal ◽

Pulverized Coal Combustion ◽

Combustion Behavior

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Numerical Simulation of High-Temperature Air Direct-Ignition of Pulverized Coal

Energy Conversion and Resources ◽

10.1115/imece2005-80672 ◽

2005 ◽

Author(s):

Z. Z. Kang ◽

B. M. Sun ◽

Y. H. Guo ◽

W. Zhang ◽

H. Q. Wei

Keyword(s):

Heat Transfer ◽

Numerical Simulation ◽

High Temperature ◽

Simulation Method ◽

Pulverized Coal ◽

Inlet Velocity ◽

Operation Optimization ◽

Structure Improvement ◽

Simulation Results ◽

Direct Ignition

Numerical simulation method is employed in this article to investigate various high-temperature air direct-ignition processes of pulverized coal (PC). Several important factors are analyzed, which are the inlet velocity of primary air flow, PC concentration and the velocity and temperature of high temperature air. The flow, combustion and heat transfer in high temperature air oil-free ignition burner can also be obtained from the simulation results, which are in accordance with the experimental data. The research provides guidance for structure improvement and operation optimization of burner.

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