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Ignition characteristics of coal blends in an entrained flow furnace

descriptionPublicationkeyboard_double_arrow_right Article 01 Sep 2007 Spain English Publisher:Elsevier BVJournal:Fuel, volume 86, pages 2,076-2,080 (issn: 0016-2361,

Authors: Faúndez, J.; Arias Rozada, Borja; Rubiera González, Fernando; Arenillas de la Puente, Ana; García, X.; Gordon, A.L.; Pis Martínez, José Juan;

doi: 10.1016/j.fuel.2007.03.024

handle: 10261/11002

Ignition characteristics of coal blends in an entrained flow furnace

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Abstract

Ignition tests were carried out on blends of three coals of different rank – subbituminous, high volatile and low volatile bituminous – in two entrained flow reactors. The ignition temperatures were determined from the gas evolution profiles (CO, CO2, NO, O2), while the mechanism of ignition was elucidated from these profiles and corroborated by high-speed video recording. Under the experimental conditions of high carbon loading, clear interactive effects were observed for all the blends. Ignition of the lower rank coals (subbituminous, high volatile bituminous) enhanced the ignition of the higher rank coal (low volatile bituminous) in the blends. The ignition temperatures of the blends of the low rank coals (subbituminous–high volatile bituminous) were additive. However, for the rest of the blends the ignition temperatures were always closer to the lower rank coal in the blend.

5 pages, 8 figures.-- Printed version published Sep 2007.-- Issue title: "The 6th European Conference on Coal Research and its Applications".

Work carried out with the financial support of FONDECYT, Project 2010113 and MECESUP UCO0108 (Chile) which provided a mobility grant.

Peer reviewed

Country

Spain

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Keywords

Entrained flow reactor, Ignition behaviour, Coal blending

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