Effects of atmospheric gas composition and temperature on the gasification of coal in hot briquetting carbon composite iron ore

Yasuaki Ueki; Masao Kanayama; Takayuki Maeda; Koki Nishioka; Masakata Shimizu

doi:10.2355/tetsutohagane.93.18

Effects of atmospheric gas composition and temperature on the gasification of coal in hot briquetting carbon composite iron ore

Yasuaki Ueki, Masao Kanayama, Takayuki Maeda, Koki Nishioka, Masakata Shimizu

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Abstract

The gasification behavior of carbon composite iron ore produced by hot briquetting process was examined under various gas atmospheres such as CO-N ₂, CO₂-N₂ and CO-CO₂ at various temperatures. The gasification of coal was affected strongly by atmospheric gas concentration and reaction temperature. Kinetic analysis in various gas atmospheres was carried out by using the first order reaction model, which yields the straight line relation between reaction rate constants for the gasification of coal and the gas concentration. Therefore, reaction rate constants for the gasification of coal in CO-CO₂-N₂ gas atmosphere were written as follows; k_c1=a×k_c1(CO) +b×k_c1(CO₂)+c×k_c1(N₂) k_c2=a×k_c2(CO)+b×k_c2(CO ₂)+c×k_c2(N₂) a=C_CO/(C _CO+C_CO2+C_N2), b=C_CO2/(C _CO+C_CO2+C_N2), c=C_N2/(C _CO+C_CO2+C_N2) where, k_C1 and k _C2 are the gasification rate constant of the first half(1/s) and the latter half(1/s) respectively, k_C1(CO), k_C1(CO ₂) and k_C1(N₂) are k_C1 in 100% CO gas atmosphere (1/s), 100% CO₂ gas atmosphere (1/s) and 100% N ₂ gas atmosphere (1/s) respectively, k_C2(CO), k _C2(CO₂) and k_C2(N₂) are k _C2 in 100% CO gas atmosphere (1/s), 100% CO₂ gas atmosphere (1/s) and 100% N₂ gas atmosphere (1/s) respectively, C_CO, C_CO2 and C_N2 are the concentration of CO gas (vol%), CO₂ gas (vol%) and N₂ gas (vol%) respectively.

Original language	English
Pages (from-to)	18-22
Number of pages	5
Journal	Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume	93
Issue number	1
DOIs	https://doi.org/10.2355/tetsutohagane.93.18
Publication status	Published - Jan 1 2007

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Metals and Alloys
Materials Chemistry

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10.2355/tetsutohagane.93.18

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@article{acbd923b317449088d70eacdd3c5803f,

title = "Effects of atmospheric gas composition and temperature on the gasification of coal in hot briquetting carbon composite iron ore",

abstract = "The gasification behavior of carbon composite iron ore produced by hot briquetting process was examined under various gas atmospheres such as CO-N 2, CO2-N2 and CO-CO2 at various temperatures. The gasification of coal was affected strongly by atmospheric gas concentration and reaction temperature. Kinetic analysis in various gas atmospheres was carried out by using the first order reaction model, which yields the straight line relation between reaction rate constants for the gasification of coal and the gas concentration. Therefore, reaction rate constants for the gasification of coal in CO-CO2-N2 gas atmosphere were written as follows; kc1=a×kc1(CO) +b×kc1(CO2)+c×kc1(N2) kc2=a×kc2(CO)+b×kc2(CO 2)+c×kc2(N2) a=CCO/(C CO+CCO2+CN2), b=CCO2/(C CO+CCO2+CN2), c=CN2/(C CO+CCO2+CN2) where, kC1 and k C2 are the gasification rate constant of the first half(1/s) and the latter half(1/s) respectively, kC1(CO), kC1(CO 2) and kC1(N2) are kC1 in 100% CO gas atmosphere (1/s), 100% CO2 gas atmosphere (1/s) and 100% N 2 gas atmosphere (1/s) respectively, kC2(CO), k C2(CO2) and kC2(N2) are k C2 in 100% CO gas atmosphere (1/s), 100% CO2 gas atmosphere (1/s) and 100% N2 gas atmosphere (1/s) respectively, CCO, CCO2 and CN2 are the concentration of CO gas (vol%), CO2 gas (vol%) and N2 gas (vol%) respectively.",

author = "Yasuaki Ueki and Masao Kanayama and Takayuki Maeda and Koki Nishioka and Masakata Shimizu",

year = "2007",

month = jan,

day = "1",

doi = "10.2355/tetsutohagane.93.18",

language = "English",

volume = "93",

pages = "18--22",

journal = "Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan",

issn = "0021-1575",

publisher = "一般社団法人日本鉄鋼協会",

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TY - JOUR

T1 - Effects of atmospheric gas composition and temperature on the gasification of coal in hot briquetting carbon composite iron ore

AU - Ueki, Yasuaki

AU - Kanayama, Masao

AU - Maeda, Takayuki

AU - Nishioka, Koki

AU - Shimizu, Masakata

PY - 2007/1/1

Y1 - 2007/1/1

N2 - The gasification behavior of carbon composite iron ore produced by hot briquetting process was examined under various gas atmospheres such as CO-N 2, CO2-N2 and CO-CO2 at various temperatures. The gasification of coal was affected strongly by atmospheric gas concentration and reaction temperature. Kinetic analysis in various gas atmospheres was carried out by using the first order reaction model, which yields the straight line relation between reaction rate constants for the gasification of coal and the gas concentration. Therefore, reaction rate constants for the gasification of coal in CO-CO2-N2 gas atmosphere were written as follows; kc1=a×kc1(CO) +b×kc1(CO2)+c×kc1(N2) kc2=a×kc2(CO)+b×kc2(CO 2)+c×kc2(N2) a=CCO/(C CO+CCO2+CN2), b=CCO2/(C CO+CCO2+CN2), c=CN2/(C CO+CCO2+CN2) where, kC1 and k C2 are the gasification rate constant of the first half(1/s) and the latter half(1/s) respectively, kC1(CO), kC1(CO 2) and kC1(N2) are kC1 in 100% CO gas atmosphere (1/s), 100% CO2 gas atmosphere (1/s) and 100% N 2 gas atmosphere (1/s) respectively, kC2(CO), k C2(CO2) and kC2(N2) are k C2 in 100% CO gas atmosphere (1/s), 100% CO2 gas atmosphere (1/s) and 100% N2 gas atmosphere (1/s) respectively, CCO, CCO2 and CN2 are the concentration of CO gas (vol%), CO2 gas (vol%) and N2 gas (vol%) respectively.

AB - The gasification behavior of carbon composite iron ore produced by hot briquetting process was examined under various gas atmospheres such as CO-N 2, CO2-N2 and CO-CO2 at various temperatures. The gasification of coal was affected strongly by atmospheric gas concentration and reaction temperature. Kinetic analysis in various gas atmospheres was carried out by using the first order reaction model, which yields the straight line relation between reaction rate constants for the gasification of coal and the gas concentration. Therefore, reaction rate constants for the gasification of coal in CO-CO2-N2 gas atmosphere were written as follows; kc1=a×kc1(CO) +b×kc1(CO2)+c×kc1(N2) kc2=a×kc2(CO)+b×kc2(CO 2)+c×kc2(N2) a=CCO/(C CO+CCO2+CN2), b=CCO2/(C CO+CCO2+CN2), c=CN2/(C CO+CCO2+CN2) where, kC1 and k C2 are the gasification rate constant of the first half(1/s) and the latter half(1/s) respectively, kC1(CO), kC1(CO 2) and kC1(N2) are kC1 in 100% CO gas atmosphere (1/s), 100% CO2 gas atmosphere (1/s) and 100% N 2 gas atmosphere (1/s) respectively, kC2(CO), k C2(CO2) and kC2(N2) are k C2 in 100% CO gas atmosphere (1/s), 100% CO2 gas atmosphere (1/s) and 100% N2 gas atmosphere (1/s) respectively, CCO, CCO2 and CN2 are the concentration of CO gas (vol%), CO2 gas (vol%) and N2 gas (vol%) respectively.

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U2 - 10.2355/tetsutohagane.93.18

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JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

IS - 1

ER -

Effects of atmospheric gas composition and temperature on the gasification of coal in hot briquetting carbon composite iron ore

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