Combustion properties of organic constituents of kraft black liquors

Raimo Alen, Mikko Hupa, Taina Noopila

Research output: Contribution to journalArticleScientificpeer-review

29 Citations (Scopus)

Abstract

The combustion behavior of the main organic components (lignin and aliphatic carboxylic acids) of kraft black liquors at 700-degrees-C and 800-degrees-C was studied using the single droplet burning technique. Significantly longer burning times (pyrolysis time and char burning time) were observed for the lignin-dominated liquors than for liquors in which the fraction of aliphatic acids were dominant. In most of the cases, swelling under the combustion conditions was more extensive for liquors containing hardwood lignin than for those containing softwood lignin. Of the minor organic fractions (extractives and hemicelluloses) of black liquor, only hemicelluloses increased the relative swelling significantly.
Original languageEnglish
Pages (from-to)337-342
Number of pages6
JournalHolzforschung
Volume46
Issue number4
DOIs
Publication statusPublished - 1992
MoE publication typeA1 Journal article-refereed

Fingerprint

Lignin
Swelling
Softwoods
Hardwoods
Carboxylic Acids
Carboxylic acids
Pyrolysis
Fatty Acids
Acids
hemicellulose

Cite this

Alen, Raimo ; Hupa, Mikko ; Noopila, Taina. / Combustion properties of organic constituents of kraft black liquors. In: Holzforschung. 1992 ; Vol. 46, No. 4. pp. 337-342.
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abstract = "The combustion behavior of the main organic components (lignin and aliphatic carboxylic acids) of kraft black liquors at 700-degrees-C and 800-degrees-C was studied using the single droplet burning technique. Significantly longer burning times (pyrolysis time and char burning time) were observed for the lignin-dominated liquors than for liquors in which the fraction of aliphatic acids were dominant. In most of the cases, swelling under the combustion conditions was more extensive for liquors containing hardwood lignin than for those containing softwood lignin. Of the minor organic fractions (extractives and hemicelluloses) of black liquor, only hemicelluloses increased the relative swelling significantly.",
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Combustion properties of organic constituents of kraft black liquors. / Alen, Raimo; Hupa, Mikko; Noopila, Taina.

In: Holzforschung, Vol. 46, No. 4, 1992, p. 337-342.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Combustion properties of organic constituents of kraft black liquors

AU - Alen, Raimo

AU - Hupa, Mikko

AU - Noopila, Taina

N1 - Project code: POV6021

PY - 1992

Y1 - 1992

N2 - The combustion behavior of the main organic components (lignin and aliphatic carboxylic acids) of kraft black liquors at 700-degrees-C and 800-degrees-C was studied using the single droplet burning technique. Significantly longer burning times (pyrolysis time and char burning time) were observed for the lignin-dominated liquors than for liquors in which the fraction of aliphatic acids were dominant. In most of the cases, swelling under the combustion conditions was more extensive for liquors containing hardwood lignin than for those containing softwood lignin. Of the minor organic fractions (extractives and hemicelluloses) of black liquor, only hemicelluloses increased the relative swelling significantly.

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U2 - 10.1515/hfsg.1992.46.4.337

DO - 10.1515/hfsg.1992.46.4.337

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