Formation and destruction of N2O in pulverized fuel combustion environments between 750 and 970 °C

Martti Aho, Jarmo Rantanen, Veli Linna

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)

Abstract

Formation and destruction of N2O were investigated under dilute pulverized coal combustion conditions in an entrained-flow reactor. The effects of temperature, atmosphere (oxidizing and reducing) and reaction environment (homogeneous and heterogeneous) were studied. N2O was measured on-line by FT-i.r. spectrometry.
No N2O evolution occurred above 950 °C. At oxygen concentrations below 1.5%, in the presence of CO, the N2O already formed was rapidly destroyed above 900 °C and fairly rapidly even at 830 °C. At high oxygen concentrations, destruction occurred more slowly, and not at all below 900 °C.
Heterogeneous reactions did not noticeably increase the destruction rate of N2O in a dilute fuel-air suspension. Low ratio of coal favoured N2O formation.
The results should assist the design of low-temperature combustors that generate only low levels of N2O.
Original languageEnglish
Pages (from-to)957-961
JournalFuel
Volume69
Issue number8
DOIs
Publication statusPublished - 1990
MoE publication typeA1 Journal article-refereed

Fingerprint

Pulverized fuel
Oxygen
Coal
Coal combustion
Carbon Monoxide
Combustors
Spectrometry
Suspensions
Temperature
Air

Cite this

@article{0dcc75cad1784547be6a8a0f4da60257,
title = "Formation and destruction of N2O in pulverized fuel combustion environments between 750 and 970 °C",
abstract = "Formation and destruction of N2O were investigated under dilute pulverized coal combustion conditions in an entrained-flow reactor. The effects of temperature, atmosphere (oxidizing and reducing) and reaction environment (homogeneous and heterogeneous) were studied. N2O was measured on-line by FT-i.r. spectrometry. No N2O evolution occurred above 950 °C. At oxygen concentrations below 1.5{\%}, in the presence of CO, the N2O already formed was rapidly destroyed above 900 °C and fairly rapidly even at 830 °C. At high oxygen concentrations, destruction occurred more slowly, and not at all below 900 °C. Heterogeneous reactions did not noticeably increase the destruction rate of N2O in a dilute fuel-air suspension. Low ratio of coal favoured N2O formation. The results should assist the design of low-temperature combustors that generate only low levels of N2O.",
author = "Martti Aho and Jarmo Rantanen and Veli Linna",
year = "1990",
doi = "10.1016/0016-2361(90)90004-A",
language = "English",
volume = "69",
pages = "957--961",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier",
number = "8",

}

Formation and destruction of N2O in pulverized fuel combustion environments between 750 and 970 °C. / Aho, Martti; Rantanen, Jarmo; Linna, Veli.

In: Fuel, Vol. 69, No. 8, 1990, p. 957-961.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Formation and destruction of N2O in pulverized fuel combustion environments between 750 and 970 °C

AU - Aho, Martti

AU - Rantanen, Jarmo

AU - Linna, Veli

PY - 1990

Y1 - 1990

N2 - Formation and destruction of N2O were investigated under dilute pulverized coal combustion conditions in an entrained-flow reactor. The effects of temperature, atmosphere (oxidizing and reducing) and reaction environment (homogeneous and heterogeneous) were studied. N2O was measured on-line by FT-i.r. spectrometry. No N2O evolution occurred above 950 °C. At oxygen concentrations below 1.5%, in the presence of CO, the N2O already formed was rapidly destroyed above 900 °C and fairly rapidly even at 830 °C. At high oxygen concentrations, destruction occurred more slowly, and not at all below 900 °C. Heterogeneous reactions did not noticeably increase the destruction rate of N2O in a dilute fuel-air suspension. Low ratio of coal favoured N2O formation. The results should assist the design of low-temperature combustors that generate only low levels of N2O.

AB - Formation and destruction of N2O were investigated under dilute pulverized coal combustion conditions in an entrained-flow reactor. The effects of temperature, atmosphere (oxidizing and reducing) and reaction environment (homogeneous and heterogeneous) were studied. N2O was measured on-line by FT-i.r. spectrometry. No N2O evolution occurred above 950 °C. At oxygen concentrations below 1.5%, in the presence of CO, the N2O already formed was rapidly destroyed above 900 °C and fairly rapidly even at 830 °C. At high oxygen concentrations, destruction occurred more slowly, and not at all below 900 °C. Heterogeneous reactions did not noticeably increase the destruction rate of N2O in a dilute fuel-air suspension. Low ratio of coal favoured N2O formation. The results should assist the design of low-temperature combustors that generate only low levels of N2O.

U2 - 10.1016/0016-2361(90)90004-A

DO - 10.1016/0016-2361(90)90004-A

M3 - Article

VL - 69

SP - 957

EP - 961

JO - Fuel

JF - Fuel

SN - 0016-2361

IS - 8

ER -