Selective non catalytic reduction of NOx by ammonia - Effect of iron additives

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F18%3A10241419" target="_blank" >RIV/61989100:27710/18:10241419 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Selective non catalytic reduction of NOx by ammonia - Effect of iron additives

Original language description

Selective non catalytic reduction of NOx by ammonia (SNCR) represents relatively easy process for NOx emissions decrease. However, regarding to its relatively low efficiency, there is an effort to find the way, how to increase it. Accessible and cheap Fe additives (gray cast-iron and siderite) were tested for understanding their catalytic effect on the SNCR process at laboratory conditions, where no radicals formed during fuel combustion are present. The catalytic effect of iron additives was tested in the fix bed reactor with feed containing NO, NH3, O2 and water vapor. It was found out that Fe additives have inhibitory effect on the SNCR process, which can be explained by the ability of the formed Fe oxides to oxidize ammonia non-selectively into nitrogen and/or NOx. However, this negative effect of Fe additives on SNCR can be minimized by adjusting the temperature, oxygen amount in the feed gas, NH3/NOx ratio or ensuring pre-oxidation of the Fe materials by oxygen by their dosing into oxygen rich area or ensuring appropriate time delay between contact of additive with oxygen and NOx and ammonia. (C) 2018 Czech Environment Management Center. All rights reserved.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Waste Forum

ISSN

1804-0195

e-ISSN

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Volume of the periodical

4

Issue of the periodical within the volume

2018

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

9

Pages from-to

421-429

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85059988555