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BIOMASS CHARACTERISTIC - Coggle Diagram
BIOMASS CHARACTERISTIC
Physicochemical properties
Calorific power
importance property of fuel influencing method of obtaining thermal energy and compaction plant designing and simplicity of burning
Void volume
Bulk density
influences transport, handling and storage of fuel
Ash content
influences burning technology, emission of solid particle, handling and use of ash
Particle density, porosity, shape,size
Electrical conductivity
Hygroscopy
Influence of physical properties on biomass
Moisture content - influences the duration of storage, system designing and the calorific power
Wet vs dry biomass
impacts conversion process
Drier = higher energy
dimension and shape - affects handling and the technology of compaction and burning
Affect its pyrolysis and gasification behavior
Example permeability is an important factor in pyrolysis
High permeability allows pyrolysis gases to be trapped in the pores, increasing their residence time in the reaction zone
Apparent density
Includes pore volume or cell cavities
regularly shaped biomass, mechanical
Based on the apparent or external volume of the biomass
An alternative is the use of volume displacement in water
Ash Content
Origin
Minerals in the woody biomass
Soil contamination
Properties
Combination with other fuels
Type of waste
Soil and climate
Species
Conditions of combustion
Part of tree
Proximate
Important in developing thermochemical conversion processes for biomass
Fixed carbon
Moisture content
Ash
Volatile matter
Ultimate ( elemental) analysis
Convenient for performing mass balances on a process
A generic molecular formula based on 1 mol of C
wood
Molecular formulas can be predicted
Cellulose and starch
C, H, O,N, S,CI
Hemicellulose