High Levels Of Biomass Cofiring - Reducing Slagging And Fouling Constraints: Project Profile

Abstract:

<p>The project aims to provide boiler operators with greater confidence in using higher levels of biofuel replacement (50% thermal or more). The specific objectives of the project are: <bl> <li>Identification of the main areas of the boiler at risk if biomass is co-fired with coal at 50% or more of thermal replacement</li> <li>Determination of the nature of deposits likely to form in the radiant and convective passes of the boiler. Measurement of the physical and mechanical properties of the deposits to determine thermal shock and sootblowing properties</li> <li>Development of a model to predict the thermal impact of fouling deposits and to optimise sootblowing operations</li> <li>Assessment of the use of low cost additives to mitigate the effects of alkali metal fouling from biomass residues</li> <li>A technical and economic assessment of the viability of high levels of biomass co-firing, including recognition of current CO2 abatement levels and other environmental constraints</li> </bl></p> <p>The increased use of biomass, a fuel that is seen as largely CO2 neutral, in power generation is one of the few ways in which the power industry could make a significant step to reducing CO2 emissions. Co-fired boiler trials have been encouraging and have shown that small amounts of coal can be replaced by biofuels without undue impact on boiler performance. However, in order to make a real impact towards reaching Government targets, the amount of biomass for co-combustion would have to be greatly increased.</p> This profile provides information on: <bl> <li>Objectives</li> <li>Summary</li> <li>Cost</li> <li>Duration</li> <li>Lead Contractor</li> <li>Collaborators</li> </bl>

Author(s):

DTI