New high-pressure gasification rate data for fast pyrolysis of black liquor char

Kari Saviharju, Antero Moilanen, Adriaan van Heiningen

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

It has been customary, when measuring the gasification rate of black liquor char, to add CO during the preceding temperature equilibration period in order to suppress the loss of sodium by the char before gasification is started.
The present study shows that this hot treatment before gasification leads to a reduction in the pressurized CO 2 gasification rate data. It is proposed that a thin layer of soot, deposited during the hot pretreatment, reduces the catalytic activity of sodium sites for carbon gasification by CO 2a. Surprisingly, the pressurized hot treatment has no effect on the pressurized H 2O gasification rate.
Atmospheric hot treatment has also no effect on the gasification rate. New high-pressure CO 2 gasification rate data are presented for fast pyrolysis black liquor char which has not been subjected to the hot treatment.
Original languageEnglish
Pages (from-to)231-236
JournalJournal of Pulp and Paper Science
Volume24
Issue number7
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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Gasification
Pyrolysis
Carbon Monoxide
Sodium
Soot
Catalyst activity
Carbon

Keywords

  • gasification

Cite this

Saviharju, K., Moilanen, A., & Heiningen, A. V. (1998). New high-pressure gasification rate data for fast pyrolysis of black liquor char. Journal of Pulp and Paper Science, 24(7), 231-236.
Saviharju, Kari ; Moilanen, Antero ; Heiningen, Adriaan van. / New high-pressure gasification rate data for fast pyrolysis of black liquor char. In: Journal of Pulp and Paper Science. 1998 ; Vol. 24, No. 7. pp. 231-236.
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Saviharju, K, Moilanen, A & Heiningen, AV 1998, 'New high-pressure gasification rate data for fast pyrolysis of black liquor char', Journal of Pulp and Paper Science, vol. 24, no. 7, pp. 231-236.

New high-pressure gasification rate data for fast pyrolysis of black liquor char. / Saviharju, Kari; Moilanen, Antero; Heiningen, Adriaan van.

In: Journal of Pulp and Paper Science, Vol. 24, No. 7, 1998, p. 231-236.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Saviharju, Kari

AU - Moilanen, Antero

AU - Heiningen, Adriaan van

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AB - It has been customary, when measuring the gasification rate of black liquor char, to add CO during the preceding temperature equilibration period in order to suppress the loss of sodium by the char before gasification is started. The present study shows that this hot treatment before gasification leads to a reduction in the pressurized CO 2 gasification rate data. It is proposed that a thin layer of soot, deposited during the hot pretreatment, reduces the catalytic activity of sodium sites for carbon gasification by CO 2a. Surprisingly, the pressurized hot treatment has no effect on the pressurized H 2O gasification rate. Atmospheric hot treatment has also no effect on the gasification rate. New high-pressure CO 2 gasification rate data are presented for fast pyrolysis black liquor char which has not been subjected to the hot treatment.

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