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Title:
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Direct catalytic decomposition and hydrocarbon-assisted catalytic reduction of N2O in the nitric acid industry
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Author(s):
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Published by:
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Publication date:
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ECN
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1-11-2000
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ECN report number:
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Document type:
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ECN-C--00-087
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ECN publication
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Number of pages:
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Full text:
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31
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Download PDF
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Abstract:
The nitric acid industry in the Netherlands is a major industrial sourceof nitrous oxide (N2O), an important contributor to the greenhouse effect.
The project aims at determining the feasibility of the use of a catalyst
developed by ECN for the direct decomposition of N2O and the Selective
Catalytic Reduction (SCR) of N2O with natural gas in the off gas of a nitric
acid plant. For plants with a tail gas temperature of at least 400C in front
of the expander, direct decomposition is an economic option (from NLG 1 per
ton CO2 equivalents removed). For plants with a temperature below 400C in
front of the expander, SCR using natural gas can be used. More economic,
however, is end-of-pipe SCR of N2O using 500 ppmv LPG (upwards of NLG 3 per
ton CO2 equivalents removed). 9 refs.
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