Catalytic conversion of nitrogen compounds in gasification gas

Jukka Leppälahti, Pekka Simell, Esa Kurkela

Research output: Contribution to journalArticleScientificpeer-review

85 Citations (Scopus)

Abstract

New forms of energy production, such as combined-cycle power plants and fuel cells, can be introduced by gasification. When gasifying nitrogenous fuels, organic and inorganic nitrogen compounds form in the gas. In gas combustion these can form nitrogen oxides detrimental to the environment. Catalytic decomposition of the nitrogen compounds in the gasification gas is one alternative for reducing the formation of nitrogen oxides. In the research work under review, catalytic effects of various inexpensive materials on the nitrogen compounds of the gasification gas at high temperatures were studied. The materials were iron sinter, iron pellet, ferrous dolomite, dolomite and limestone, and, as reference materials, inert silicon carbide and a commercial nickel catalyst. The most significant nitrogen compounds formed in gasification are ammonia, hydrogen cyanide and organic nitrogen compounds of tar. The ferrous materials and the commercial nickel catalyst proved to be the most efficient agents for decomposing ammonia. Limestone and dolomite did not exhibit any essential catalytic capacity for decomposing ammonia, although they reduced the hydrogen cyanide content of the gas.

Original languageEnglish
Pages (from-to)43 - 56
Number of pages14
JournalFuel Processing Technology
Volume29
Issue number1-2
DOIs
Publication statusPublished - 1991
MoE publication typeA1 Journal article-refereed

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Nitrogen Compounds
Nitrogen compounds
Gasification
Gases
Ammonia
Hydrogen Cyanide
Nitrogen Oxides
Calcium Carbonate
Nitrogen oxides
Cyanides
Nickel
Limestone
Iron
Tars
Combined cycle power plants
Hydrogen
Catalysts
Tar
Silicon carbide
Fuel cells

Keywords

  • gasification

Cite this

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title = "Catalytic conversion of nitrogen compounds in gasification gas",
abstract = "New forms of energy production, such as combined-cycle power plants and fuel cells, can be introduced by gasification. When gasifying nitrogenous fuels, organic and inorganic nitrogen compounds form in the gas. In gas combustion these can form nitrogen oxides detrimental to the environment. Catalytic decomposition of the nitrogen compounds in the gasification gas is one alternative for reducing the formation of nitrogen oxides. In the research work under review, catalytic effects of various inexpensive materials on the nitrogen compounds of the gasification gas at high temperatures were studied. The materials were iron sinter, iron pellet, ferrous dolomite, dolomite and limestone, and, as reference materials, inert silicon carbide and a commercial nickel catalyst. The most significant nitrogen compounds formed in gasification are ammonia, hydrogen cyanide and organic nitrogen compounds of tar. The ferrous materials and the commercial nickel catalyst proved to be the most efficient agents for decomposing ammonia. Limestone and dolomite did not exhibit any essential catalytic capacity for decomposing ammonia, although they reduced the hydrogen cyanide content of the gas.",
keywords = "gasification",
author = "Jukka Lepp{\"a}lahti and Pekka Simell and Esa Kurkela",
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year = "1991",
doi = "10.1016/0378-3820(91)90016-6",
language = "English",
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pages = "43 -- 56",
journal = "Fuel Processing Technology",
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Catalytic conversion of nitrogen compounds in gasification gas. / Leppälahti, Jukka; Simell, Pekka; Kurkela, Esa.

In: Fuel Processing Technology, Vol. 29, No. 1-2, 1991, p. 43 - 56.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Catalytic conversion of nitrogen compounds in gasification gas

AU - Leppälahti, Jukka

AU - Simell, Pekka

AU - Kurkela, Esa

N1 - Project code: POV8016

PY - 1991

Y1 - 1991

N2 - New forms of energy production, such as combined-cycle power plants and fuel cells, can be introduced by gasification. When gasifying nitrogenous fuels, organic and inorganic nitrogen compounds form in the gas. In gas combustion these can form nitrogen oxides detrimental to the environment. Catalytic decomposition of the nitrogen compounds in the gasification gas is one alternative for reducing the formation of nitrogen oxides. In the research work under review, catalytic effects of various inexpensive materials on the nitrogen compounds of the gasification gas at high temperatures were studied. The materials were iron sinter, iron pellet, ferrous dolomite, dolomite and limestone, and, as reference materials, inert silicon carbide and a commercial nickel catalyst. The most significant nitrogen compounds formed in gasification are ammonia, hydrogen cyanide and organic nitrogen compounds of tar. The ferrous materials and the commercial nickel catalyst proved to be the most efficient agents for decomposing ammonia. Limestone and dolomite did not exhibit any essential catalytic capacity for decomposing ammonia, although they reduced the hydrogen cyanide content of the gas.

AB - New forms of energy production, such as combined-cycle power plants and fuel cells, can be introduced by gasification. When gasifying nitrogenous fuels, organic and inorganic nitrogen compounds form in the gas. In gas combustion these can form nitrogen oxides detrimental to the environment. Catalytic decomposition of the nitrogen compounds in the gasification gas is one alternative for reducing the formation of nitrogen oxides. In the research work under review, catalytic effects of various inexpensive materials on the nitrogen compounds of the gasification gas at high temperatures were studied. The materials were iron sinter, iron pellet, ferrous dolomite, dolomite and limestone, and, as reference materials, inert silicon carbide and a commercial nickel catalyst. The most significant nitrogen compounds formed in gasification are ammonia, hydrogen cyanide and organic nitrogen compounds of tar. The ferrous materials and the commercial nickel catalyst proved to be the most efficient agents for decomposing ammonia. Limestone and dolomite did not exhibit any essential catalytic capacity for decomposing ammonia, although they reduced the hydrogen cyanide content of the gas.

KW - gasification

U2 - 10.1016/0378-3820(91)90016-6

DO - 10.1016/0378-3820(91)90016-6

M3 - Article

VL - 29

SP - 43

EP - 56

JO - Fuel Processing Technology

JF - Fuel Processing Technology

SN - 0378-3820

IS - 1-2

ER -