NOx Emissions from Bubbling Fluidized Bed Combustion of Lignite Coal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F15%3A00235319" target="_blank" >RIV/68407700:21220/15:00235319 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.14311/AP.2015.55.0275" target="_blank" >http://dx.doi.org/10.14311/AP.2015.55.0275</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/AP.2015.55.0275" target="_blank" >10.14311/AP.2015.55.0275</a>

Result language

angličtina

Original language name

NOx Emissions from Bubbling Fluidized Bed Combustion of Lignite Coal

Original language description

This paper presents experimental results of NOx emission measurements for combustion of two kinds of coal in a bubbling fluidized bed combustor. The tested fuels were Czech brown coal (CBC) and German young brown coal (GYC). These fuels have different nitrogen contents. The experiments were performed in the pilot scale BFB experimental unit with power output of 500 kW. The influence of several parameters on NOx formation are investigated in this paper. The parameters studied here include the effect of the nitrogen content in the fuel, the effect of the oxygen concentration in the bed, the effect of bed temperature, the effect of air staging, and the effect of fluidization velocity. Significantly different behaviour of the fuels was found. Although GYC has a lower nitrogen content than CBC, it is more reactive and produces higher NOx emissions. The biggest dependence of NOx production for CBC was found for the effects of air staging and fluidization velocity. As the fluidization velocity increases and the amount of secondary air decreases, there is an increase in NOx emissions. The oxygen concentration in the bed has the strongest effect on the NOx production of GYCs. With increasing oxygen concentration, the production of NOx also increases. On the basis of the NOx measurements, the N-NO conversion factor was calculated and the effect of the operating parameters on this conversion factor was investigated. Czech Technical University in Prague, 2015.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JE - Non-nuclear power engineering, energy consumption and utilization

OECD FORD branch

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Project

<a href="/en/project/TA03020312" target="_blank" >TA03020312: Research of oxyfuel combustion in a bubbling fluidized bed for CCS technologies</a><br>

Continuities

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

Publication year

2015

Confidentiality

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

Name of the periodical

Acta Polytechnica

ISSN

1210-2709

e-ISSN

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Volume of the periodical

55

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

7

Pages from-to

275-281

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-84940918512