Numerical study on pulverized biochar injection in blast furnace

Agung Tri Wijayanta, Md Saiful Alam, Koichi Nakaso, Jun Fukai, Kazuya Kunitomo, Masakata Shimizu

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The possibility of injecting pulverized biochar instead of conventional pulverized coal in blast furnace ironmaking was investigated numerically. More detailed reactions including the water-related reactions were considered here. The combustion process from the tuyere to the raceway of a blast furnace was simulated. Oak char (volatile matter wt.% dry basis, VM = 27.11 wt.%-db) provided a lower temperature than Taiheiyo coal (VM = 44.60 wt.%-db). Increasing the O2 concentration from 23 to 27 wt.% resulted in a higher combustibility of both solid fuels. However, the effect of increasing oxygen concentration was still insufficient for the Oak char at high injection rates because of its inadequate volatile content. Biochar properties become increasingly important as the injection rate increases. Compared with Oak char that provided a combustibility of 68% at an injection rate of 200 [(kg solid fuel)/(1 000 Nm3 feed gas)] and hot blast of 27 wt.% O2 concentration, Oak char 1 (VM = 32.09 wt.%-db) had a higher combustibility of 71%.

Original languageEnglish
Pages (from-to)1521-1529
Number of pages9
JournalISIJ International
Volume54
Issue number7
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

Flammability
Blast furnaces
Coal
Gases
Oxygen
Water
biochar
Temperature

Keywords

  • Biochar
  • Blast furnace ironmaking
  • Combustibility
  • Numerical simulation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Wijayanta, A. T., Alam, M. S., Nakaso, K., Fukai, J., Kunitomo, K., & Shimizu, M. (2014). Numerical study on pulverized biochar injection in blast furnace. ISIJ International, 54(7), 1521-1529. https://doi.org/10.2355/isijinternational.54.1521

Numerical study on pulverized biochar injection in blast furnace. / Wijayanta, Agung Tri; Alam, Md Saiful; Nakaso, Koichi; Fukai, Jun; Kunitomo, Kazuya; Shimizu, Masakata.

In: ISIJ International, Vol. 54, No. 7, 2014, p. 1521-1529.

Research output: Contribution to journalArticle

Wijayanta, AT, Alam, MS, Nakaso, K, Fukai, J, Kunitomo, K & Shimizu, M 2014, 'Numerical study on pulverized biochar injection in blast furnace', ISIJ International, vol. 54, no. 7, pp. 1521-1529. https://doi.org/10.2355/isijinternational.54.1521
Wijayanta, Agung Tri ; Alam, Md Saiful ; Nakaso, Koichi ; Fukai, Jun ; Kunitomo, Kazuya ; Shimizu, Masakata. / Numerical study on pulverized biochar injection in blast furnace. In: ISIJ International. 2014 ; Vol. 54, No. 7. pp. 1521-1529.
@article{e007897f8114456d85cf33e90c072256,
title = "Numerical study on pulverized biochar injection in blast furnace",
abstract = "The possibility of injecting pulverized biochar instead of conventional pulverized coal in blast furnace ironmaking was investigated numerically. More detailed reactions including the water-related reactions were considered here. The combustion process from the tuyere to the raceway of a blast furnace was simulated. Oak char (volatile matter wt.{\%} dry basis, VM = 27.11 wt.{\%}-db) provided a lower temperature than Taiheiyo coal (VM = 44.60 wt.{\%}-db). Increasing the O2 concentration from 23 to 27 wt.{\%} resulted in a higher combustibility of both solid fuels. However, the effect of increasing oxygen concentration was still insufficient for the Oak char at high injection rates because of its inadequate volatile content. Biochar properties become increasingly important as the injection rate increases. Compared with Oak char that provided a combustibility of 68{\%} at an injection rate of 200 [(kg solid fuel)/(1 000 Nm3 feed gas)] and hot blast of 27 wt.{\%} O2 concentration, Oak char 1 (VM = 32.09 wt.{\%}-db) had a higher combustibility of 71{\%}.",
keywords = "Biochar, Blast furnace ironmaking, Combustibility, Numerical simulation",
author = "Wijayanta, {Agung Tri} and Alam, {Md Saiful} and Koichi Nakaso and Jun Fukai and Kazuya Kunitomo and Masakata Shimizu",
year = "2014",
doi = "10.2355/isijinternational.54.1521",
language = "English",
volume = "54",
pages = "1521--1529",
journal = "ISIJ International",
issn = "0915-1559",
publisher = "Iron and Steel Institute of Japan",
number = "7",

}

TY - JOUR

T1 - Numerical study on pulverized biochar injection in blast furnace

AU - Wijayanta, Agung Tri

AU - Alam, Md Saiful

AU - Nakaso, Koichi

AU - Fukai, Jun

AU - Kunitomo, Kazuya

AU - Shimizu, Masakata

PY - 2014

Y1 - 2014

N2 - The possibility of injecting pulverized biochar instead of conventional pulverized coal in blast furnace ironmaking was investigated numerically. More detailed reactions including the water-related reactions were considered here. The combustion process from the tuyere to the raceway of a blast furnace was simulated. Oak char (volatile matter wt.% dry basis, VM = 27.11 wt.%-db) provided a lower temperature than Taiheiyo coal (VM = 44.60 wt.%-db). Increasing the O2 concentration from 23 to 27 wt.% resulted in a higher combustibility of both solid fuels. However, the effect of increasing oxygen concentration was still insufficient for the Oak char at high injection rates because of its inadequate volatile content. Biochar properties become increasingly important as the injection rate increases. Compared with Oak char that provided a combustibility of 68% at an injection rate of 200 [(kg solid fuel)/(1 000 Nm3 feed gas)] and hot blast of 27 wt.% O2 concentration, Oak char 1 (VM = 32.09 wt.%-db) had a higher combustibility of 71%.

AB - The possibility of injecting pulverized biochar instead of conventional pulverized coal in blast furnace ironmaking was investigated numerically. More detailed reactions including the water-related reactions were considered here. The combustion process from the tuyere to the raceway of a blast furnace was simulated. Oak char (volatile matter wt.% dry basis, VM = 27.11 wt.%-db) provided a lower temperature than Taiheiyo coal (VM = 44.60 wt.%-db). Increasing the O2 concentration from 23 to 27 wt.% resulted in a higher combustibility of both solid fuels. However, the effect of increasing oxygen concentration was still insufficient for the Oak char at high injection rates because of its inadequate volatile content. Biochar properties become increasingly important as the injection rate increases. Compared with Oak char that provided a combustibility of 68% at an injection rate of 200 [(kg solid fuel)/(1 000 Nm3 feed gas)] and hot blast of 27 wt.% O2 concentration, Oak char 1 (VM = 32.09 wt.%-db) had a higher combustibility of 71%.

KW - Biochar

KW - Blast furnace ironmaking

KW - Combustibility

KW - Numerical simulation

UR - http://www.scopus.com/inward/record.url?scp=84906736794&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906736794&partnerID=8YFLogxK

U2 - 10.2355/isijinternational.54.1521

DO - 10.2355/isijinternational.54.1521

M3 - Article

AN - SCOPUS:84906736794

VL - 54

SP - 1521

EP - 1529

JO - ISIJ International

JF - ISIJ International

SN - 0915-1559

IS - 7

ER -