Ash Deposition in Biomass Combustion or Co-Firing for Power/Heat Generation
نویسندگان
چکیده
This paper presents a concise overview of ash deposition in combustion or co-firing of biomass (woody biomass, agricultural residues, peat, etc.) with other fuels for power/heat generation. In this article, the following five research aspects on biomass combustion ash deposition are reviewed and discussed: influence of biomass fuel characteristics, deposit-related challenges, ash deposition monitoring and analysis of ash deposits, mechanisms and chemistry of fly ash deposition, and key technologies for reducing ash deposition and corrosion in biomass-involved combustion.
منابع مشابه
Ash Transformation and Deposition Behavior during Co-firing Biomass Fuels with Sewage Sludge
In the present work, the ash transformation and deposition behavior during wheat straw and wood waste combustion were investigated by combustion experiments in an entrained flow reactor. The influence of sewage sludge addition on ash chemistry and deposition tendency was also studied. During combustion wheat straw, fine fly ash particles smaller than 2.5 μm are mainly formed due to vaporization...
متن کاملElectrodialytic removal of Cd from biomass combustion fly ash suspensions.
Due to relatively high concentrations of Cd, biomass combustion fly ashes often fail to meet Danish legislative requirements for recycling as fertilizer. In this study, the potential of using electrodialytic remediation for removal of Cd from four different biomass combustion fly ashes was investigated with the aim of enabling reuse of the ashes. The ashes originated from combustion of straw (t...
متن کاملDirect Combustion of Biomass
1. Background 2. Fundamentals of Biomass Combustion 2.1. Efficiency Constraints in Combustion 3. The Nature of Biomass Solid Fuels 3.1. Standard Tests in Fuels Analysis 3.2. Proximate and Ultimate Analysis 4. Fuel Preparation 5. Combustion Products from Biomass 5.1. Mineral Matter and Ash 5.2. Nitrogen Oxides 5.3. Sulfur Dioxide SO2 5.4. Chlorine – tube corrosion and dioxin (TCDD) formation 6. ...
متن کاملEnvironmental and health aspects of coal and biomass co-combustion ashes
Co-combustion is an important aspect of power generation from coal in the Netherlands and becomes increasingly important in the rest of Europe as well. To study these aspects several ashes have been sampled for many years under different firing conditions in test series, mostly at power plants. These ashes were analyzed and its properties assessed. Occupational health aspects discussed in this ...
متن کاملCharacterization of Feed Streams and Emissions from Biomass Gasification/Combustion at Fuel Ethanol Plants
Fuel and emission characteristics of co-products of the ethanol dry-grind process [distillers wet grains (DWG), concentrated distillers solubles (referred to as “syrup”), and distillers dried grains with solubles (DDGS)], and corn stover are evaluated. Biomass co-products from the dry-grind ethanol production process, particularly DDGS, are good sources for the electrical and thermal energy nee...
متن کامل