Pyrolysis of peat

Martti Aho

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The release of nitrogen and sulphur compounds in peat pyrolysis was investigated between 300 and 700 °C. Seven peats with different nitrogen and sulphur contents (N:0.8729 %. S: 0.08—0.24 %) were studied. The pyrolysis was studied indirectly by
following the elemental composition and the structure of the char residue. The tars of one peat sample were trapped.

The greatest portion of the sulphur-containing compounds pyrolysed below 500 °C, Nitrogenrcontaining compounds pyrolysed in a larger temperature range. One group of peats contained easily pyrolysable and the other group weakly pyrolysable nitrogen
compounds. This suggests that the behaviour of fuel nitrogen in combustion will be difficult to predict because pyrolysis compounds may react further to corresponding oxides. The nitrogen content may be high in the tar in which case the tarry intermediates may also increase the amount of NO in flue gases. Infrared spectroscopy provided information about the decomposition of the main compounds in peat, like carbohydrates and long chained hydrocarbons during charring complementary to the information provided by elemental analyses.
Original languageEnglish
Pages (from-to)105-110
JournalSuo
Volume38
Issue number5
Publication statusPublished - 1987
MoE publication typeA1 Journal article-refereed

Fingerprint

pyrolysis
peat
sulfur
sulfur compound
tar
nitrogen
nitrogen compound
infrared spectroscopy
combustion
nitrogen content
oxides
hydrocarbons
carbohydrate
oxide
gases
decomposition
hydrocarbon
carbohydrates
degradation
gas

Keywords

  • pyrolysis
  • peat
  • air pollution

Cite this

Aho, M. (1987). Pyrolysis of peat. Suo, 38(5), 105-110.
Aho, Martti. / Pyrolysis of peat. In: Suo. 1987 ; Vol. 38, No. 5. pp. 105-110.
@article{907fede3fe1e48aa8af1a812ecbf8b69,
title = "Pyrolysis of peat",
abstract = "The release of nitrogen and sulphur compounds in peat pyrolysis was investigated between 300 and 700 °C. Seven peats with different nitrogen and sulphur contents (N:0.8729 {\%}. S: 0.08—0.24 {\%}) were studied. The pyrolysis was studied indirectly byfollowing the elemental composition and the structure of the char residue. The tars of one peat sample were trapped.The greatest portion of the sulphur-containing compounds pyrolysed below 500 °C, Nitrogenrcontaining compounds pyrolysed in a larger temperature range. One group of peats contained easily pyrolysable and the other group weakly pyrolysable nitrogencompounds. This suggests that the behaviour of fuel nitrogen in combustion will be difficult to predict because pyrolysis compounds may react further to corresponding oxides. The nitrogen content may be high in the tar in which case the tarry intermediates may also increase the amount of NO in flue gases. Infrared spectroscopy provided information about the decomposition of the main compounds in peat, like carbohydrates and long chained hydrocarbons during charring complementary to the information provided by elemental analyses.",
keywords = "pyrolysis, peat, air pollution",
author = "Martti Aho",
year = "1987",
language = "English",
volume = "38",
pages = "105--110",
journal = "Suo",
issn = "0039-5471",
publisher = "Suoseura - Finnish Peatland Society",
number = "5",

}

Aho, M 1987, 'Pyrolysis of peat', Suo, vol. 38, no. 5, pp. 105-110.

Pyrolysis of peat. / Aho, Martti.

In: Suo, Vol. 38, No. 5, 1987, p. 105-110.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Pyrolysis of peat

AU - Aho, Martti

PY - 1987

Y1 - 1987

N2 - The release of nitrogen and sulphur compounds in peat pyrolysis was investigated between 300 and 700 °C. Seven peats with different nitrogen and sulphur contents (N:0.8729 %. S: 0.08—0.24 %) were studied. The pyrolysis was studied indirectly byfollowing the elemental composition and the structure of the char residue. The tars of one peat sample were trapped.The greatest portion of the sulphur-containing compounds pyrolysed below 500 °C, Nitrogenrcontaining compounds pyrolysed in a larger temperature range. One group of peats contained easily pyrolysable and the other group weakly pyrolysable nitrogencompounds. This suggests that the behaviour of fuel nitrogen in combustion will be difficult to predict because pyrolysis compounds may react further to corresponding oxides. The nitrogen content may be high in the tar in which case the tarry intermediates may also increase the amount of NO in flue gases. Infrared spectroscopy provided information about the decomposition of the main compounds in peat, like carbohydrates and long chained hydrocarbons during charring complementary to the information provided by elemental analyses.

AB - The release of nitrogen and sulphur compounds in peat pyrolysis was investigated between 300 and 700 °C. Seven peats with different nitrogen and sulphur contents (N:0.8729 %. S: 0.08—0.24 %) were studied. The pyrolysis was studied indirectly byfollowing the elemental composition and the structure of the char residue. The tars of one peat sample were trapped.The greatest portion of the sulphur-containing compounds pyrolysed below 500 °C, Nitrogenrcontaining compounds pyrolysed in a larger temperature range. One group of peats contained easily pyrolysable and the other group weakly pyrolysable nitrogencompounds. This suggests that the behaviour of fuel nitrogen in combustion will be difficult to predict because pyrolysis compounds may react further to corresponding oxides. The nitrogen content may be high in the tar in which case the tarry intermediates may also increase the amount of NO in flue gases. Infrared spectroscopy provided information about the decomposition of the main compounds in peat, like carbohydrates and long chained hydrocarbons during charring complementary to the information provided by elemental analyses.

KW - pyrolysis

KW - peat

KW - air pollution

M3 - Article

VL - 38

SP - 105

EP - 110

JO - Suo

JF - Suo

SN - 0039-5471

IS - 5

ER -

Aho M. Pyrolysis of peat. Suo. 1987;38(5):105-110.