Ash effects during combustion of lignite/biomass blends in fluidized bed

Aiming at investigating the role of minerals in evaluating co-firing applications of low rank coals and biomass materials, agricultural residues characteristic of the Mediterranean countries, one lignite and their blends with biomass proportions up to 20% wt, were burned in a lab-scale fluidized bed facility. Fly ashes and bed material were characterized in terms of mineralogical, chemical and morphological analyses and the slagging/fouling and agglomeration propensities were determined.

[1]  T. Linjewile,et al.  Role of Additives in Controlling Agglomeration and Defluidization During Fluidized Bed Combustion of High-Sodium, High-Sulphur Low-Rank Coal , 2002 .

[2]  O. Lindqvist,et al.  Capture of Potassium and Cadmium by Kaolin in Oxidizing and Reducing Atmospheres , 2004 .

[3]  Guohua Chen,et al.  Effect of inorganic matter on reactivity and kinetics of coal pyrolysis , 2004 .

[4]  Dongke Zhang,et al.  Remediation of ash problems in fluidised-bed combustors , 2001 .

[5]  Marek Pronobis,et al.  The influence of biomass co-combustion on boiler fouling and efficiency , 2006 .

[6]  M. Öhman,et al.  Slagging Characteristics during Combustion of Cereal Grains Rich in Phosphorus , 2007 .

[7]  Göran Berndes,et al.  Bioenergy expansion in the EU: Cost-effective climate change mitigation, employment creation and reduced dependency on imported fuels , 2007 .

[8]  S. Bhattacharya,et al.  Control of agglomeration and defluidization burning high-alkali, high-sulfur lignites in a small fluidized bed combustor - Effect of additive size and type, and the role of calcium , 2003 .

[9]  F. Shadman,et al.  The kinetics and mechanism of alkali removal from flue gases by solid sorbents , 1990 .

[10]  B. Jenkins,et al.  Combustion properties of biomass , 1998 .

[11]  Panagiotis Grammelis,et al.  Experience on Combustion and Co-Combustion of Greek Brown Coal in Fluidized Bed Facilities , 2003 .

[12]  B. Chadwick,et al.  Screening of potential mineral additives for use as fouling preventatives in Victorian brown coal combustion , 1999 .

[13]  Mikko Hupa,et al.  Fouling tendency of ash resulting from burning mixtures of biofuels. Part 1: Deposition rates , 2006 .

[14]  A. Robinson,et al.  Pilot-Scale Investigation of the Influence of Coal−Biomass Cofiring on Ash Deposition , 2002 .

[15]  M. Wey,et al.  The effect of mineral compositions of waste and operating conditions on particle agglomeration/defluidization during incineration , 2004 .

[16]  O. Lindqvist,et al.  Stabilisation of biofuel ashes for recycling to forest soil. , 1997 .

[17]  Oliver Lindqvist,et al.  Fly ash characteristics in co-combustion of wood with coal, oil or peat , 1999 .

[18]  S. Patumsawad,et al.  Co-combustion of waste from olive oil production with coal in a fluidised bed. , 2001, Waste management.

[19]  D. Vamvuka,et al.  Control methods for mitigating biomass ash-related problems in fluidized beds. , 2008, Bioresource technology.

[20]  A. Gil,et al.  A pilot-scale fireside deposit study of co-firing Cynara with two coals in a fluidised bed , 2008 .

[21]  K. Sjöström,et al.  The ash chemistry in fluidised bed gasification of biomass fuels. Part II : Ash behaviour prediction versus bench scale agglomeration tests , 2001 .

[22]  Jun Li,et al.  Direct modification of solid residues during co-firing of coal sludge and coal☆ ☆ , 2003 .

[23]  F. Van Puyvelde,et al.  Fluidized bed incineration of sewage sludge: a strategy for the design of the incinerator and the future for incinerator ash utilization , 1994 .

[24]  A. Carpenter.  Switching to cheaper coals for power generation , 1998 .

[25]  Klaus R. G. Hein,et al.  Behavior of Chlorine and Enrichment of Risky Elements in Bubbling Fluidized Bed Combustion of Biomass and Waste Assisted by Additives , 2001 .

[26]  Mikko Hupa,et al.  Interaction of fuels in co-firing in FBC , 2005 .

[27]  Britt-Marie Steenari,et al.  Kaolin Addition during Biomass Combustion in a 35 MW Circulating Fluidized-Bed Boiler , 2007 .

[28]  Lian Zhang,et al.  Transformation of mineral and emission of particulate matters during co-combustion of coal with sewage sludge , 2004 .

[29]  K. Veijonen,et al.  Combustion behaviour of rice husk in a bubbling fluidised bed , 2002 .

[30]  Ralph E.H. Sims,et al.  Carbon emission and mitigation cost comparisons between fossil fuel, nuclear and renewable energy resources for electricity generation , 2003 .

[31]  R. Escalada Cuadrado,et al.  Ash behaviour of lignocellulosic biomass in bubbling fluidised bed combustion , 2006 .

[32]  Y. Nathan,et al.  Oil shale fueled FBC power plant – Ash deposits and fouling problems , 2007 .

[33]  Dan Boström,et al.  Slagging Characteristics during Combustion of Corn Stovers with and without Kaolin and Calcite , 2008 .

[34]  M. Hupa,et al.  Fouling Tendency of Ash Resulting From Burning Mixtures of Biofuels , 2005 .

[35]  D. T. Liang,et al.  Case studies––Problem solving in fluidized bed waste fuel incineration , 2005 .