Composition of agglomerates in fluidized bed reactors for thermochemical conversion of biomass and waste fuels Experimental data in comparison with predictions by a thermodynamic equilibrium model

被引：46

作者：

Elled, A. -L. ^{[1
]}

Amand, L. -E. ^{[1
]}

Steenari, B. -M. ^{[2
]}

机构：

[1] Chalmers Univ Technol, Environm & Energy Dept, SE-41296 Gothenburg, Sweden

[2] Chalmers Univ Technol, Dept Chem & Biol Engn, SE-41296 Gothenburg, Sweden

来源：

FUEL | 2013年 / 111卷

关键词：

Fluidized bed boiler; Quartz sand; Alkali chlorides; Bed material; Agglomeration; SEWAGE-SLUDGE; RAPESEED CAKE; ASH CHEMISTRY; COMBUSTION; MECHANISMS; GASIFICATION; CAPTURE; METALS; STRAW; FATE;

D O I：

10.1016/j.fuel.2013.03.018

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Controlled combustion tests of biomass were performed in the 12 MWth circulating fluidized bed (CFB) boiler located on the campus of Chalmers University of Technology. The aim was twofold: to investigate the composition of agglomerated material and also to highlight the reasons for sintering and agglomeration during thermochemical conversion of biomass and wastes in fluidized bed reactors using quartz sand as bed material. Bed ash from three different tests regarding fuel or fuel mixtures (wood with straw, bark, and bark with refused derived fuel) was analysed to determine the ash elements using: (a) inductive coupled plasma (ICP) equipped with optical emission spectroscopy (OES) and (b) scanning electron microscopy equipped with an electron dispersive X-ray spectrometer (SEM-EDX). Chemical equilibrium calculations were also performed to support the interpretation of the experimental findings. It was found that the combination of (i) well controlled full-scale tests in a fluidized bed boiler, (ii) the use of line-scans by the EDX spectrometer of the SEM on bed samples and (iii) thermodynamic equilibrium modelling is a powerful tool in understanding the phenomena of bed agglomeration using quartz sand. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：696 / 708

页数：13

共 52 条

[1] Metal emissions from co-combustion of sewage sludge and coal/wood in fluidized bed [J].

Åmand, LE ;

Leckner, B .

FUEL, 2004, 83 (13) :1803-1821

[2]

AMAND LE, 2006, FUEL, V85, P1313, DOI DOI 10.1016/J.FUEL.2006.01.001

[3]

Bapat D.W., 1997, Proceedings of the 14th International Conference on Fluidized Bed Combustion, P165

[4]

Barisic V, 2008, P WORLD BIOENERGY 20, P259

[5] Agglomeration in fluidized beds at high temperatures: Mechanisms, detection and prevention [J].

Bartels, Malte ;

Lin, Weigang ;

Nijenhuis, John ;

Kapteijn, Freek ;

van Ommen, J. Ruud .

PROGRESS IN ENERGY AND COMBUSTION SCIENCE, 2008, 34 (05) :633-666

[6] Determination of the Liquidus Temperatures of Ashes from the Biomass Gazification for Fuel Production by Thermodynamical and Experimental Approaches [J].

Berjonneau, Jerome ;

Colombel, Laetitia ;

Poirier, Jacques ;

Pichavant, Michel ;

Defoort, Francoise ;

Seiler, Jean-Marie .

ENERGY & FUELS, 2009, 23 (12) :6231-6241

[7] Mechanisms of bed agglomeration during fluidized-bed combustion of biomass fuels [J].

Brus, E ;

Öhman, M ;

Nordin, A .

ENERGY & FUELS, 2005, 19 (03) :825-832

[8] Bed agglomeration characteristics of biomass fuels using blast-furnace slag as bed material [J].

Brus, E ;

Öhman, M ;

Nordin, A ;

Boström, D ;

Hedman, H ;

Eklund, A .

ENERGY & FUELS, 2004, 18 (04) :1187-1193

[9]

Carter CB, 2007, CERAMIC MAT SCI ENG, P139

[10] Countermeasures against alkali-related problems during combustion of biomass in a circulating fluidized bed boiler [J].

Davidsson, K. O. ;

Amand, L. -E. ;

Steenari, B. -M. ;

Elled, A. -L. ;

Eskilsson, D. ;

Leckner, B. .

CHEMICAL ENGINEERING SCIENCE, 2008, 63 (21) :5314-5329

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