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Influence of Operating Conditions and Coal Properties on NOx and N2O Emissions in Pressurized Fluidized Bed Combustion of Subbituminous Coals

Result description

Our experimental study is aimed at finding effects of operating conditions in Pressurized Fluidized Bed Combustion (PFBC) of subbituminous coals differing in ash content/composition and in particle size distribution on nitrogen oxide ( NOx + N2O) emissions. The experiments have been performed on a smaller laboratory apparatus with ID = 8 cm. The effects of operating pressure (0.1 - 1 MPa), temperature of the fluidized bed ( 800 - 900 oC), freeboard temperature and oxygen concentration (3 - 10 vil. %) influe gas on the nitrogen oxides emissions is relatively complex, coupled with temperature of burning coal particles. The NOx emissions decrease with increasing pressure, the N2O emissions can exhibite a maximum at pressure 0.2 - 0.5 MPa or can be practically constant. At higher temperatures (900 oC) the N2O emissions are small/negligible.

Keywords

NOx and N2O emissionscombustion

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

    Influence of Operating Conditions and Coal Properties on NOx and N2O Emissions in Pressurized Fluidized Bed Combustion of Subbituminous Coals

  • Original language description

    Our experimental study is aimed at finding effects of operating conditions in Pressurized Fluidized Bed Combustion (PFBC) of subbituminous coals differing in ash content/composition and in particle size distribution on nitrogen oxide ( NOx + N2O) emissions. The experiments have been performed on a smaller laboratory apparatus with ID = 8 cm. The effects of operating pressure (0.1 - 1 MPa), temperature of the fluidized bed ( 800 - 900 oC), freeboard temperature and oxygen concentration (3 - 10 vil. %) influe gas on the nitrogen oxides emissions is relatively complex, coupled with temperature of burning coal particles. The NOx emissions decrease with increasing pressure, the N2O emissions can exhibite a maximum at pressure 0.2 - 0.5 MPa or can be practically constant. At higher temperatures (900 oC) the N2O emissions are small/negligible.

  • Czech name

    Vliv pracovních podmínek a vlastností uhlí na emise NOx a N2O ze spalování subbitumenózních uhlí v tlakové fluidní vrstvě

  • Czech description

    Experimenty byly realizovány v malém laboratorním aparátu o průměru 10 cm. Emise NOx klesají s rostoucím tlakem, emise N2O vykazují maximum při tlacích 0,2 ? 0,5 MPa.

Classification

  • Type

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

  • CEP classification

    CI - Industrial chemistry and chemical engineering

  • OECD FORD branch

Result continuities

Others

  • Publication year

    2004

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Fuel

  • ISSN

    0016-2361

  • e-ISSN

  • Volume of the periodical

    83

  • Issue of the periodical within the volume

    7-8

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    9

  • Pages from-to

    1095-1103

  • UT code for WoS article

  • EID of the result in the Scopus database

Basic information

Result type

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

Jx

CEP

CI - Industrial chemistry and chemical engineering

Year of implementation

2004