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DISADVANTAGES OF BIOMASS AS FUEL 

  • LOW CALORIFIC VALUE & HIGH MOISTURE CONTENT
  • LOW ENERGY DENSITY - (IT IS NOT ECONOMICAL TO TRANSPORT IT OVER LONG DISTANCES)
  • LOW COMBUSTION EFFICIENCY
  • NON-HOMOGENEOUS FUEL - (VARIES IN SIZES/SHAPES & COMBUSTION PROPERTIES)
  • HYDROPHILIC FUEL
  • POOR GRINDABILITY - (ENERGY INTENSIVE PROCESS)

BIOMASS TORREFACTION CAN ADRESS THESE PROBLEMS EFFECTIVELY, HENCE BIOMASS CAN BE USED AS ALTERNATIVE FUEL EFFECTIVELY.

TORREFIED BIOMASS

 Biomass Torrefaction is a thermal process, which can be considered also as mild Pyrolysis, based on which the biomass is being heated in the absence of air, at temperatures between 150-350 oC. As a result the material is devolatilized and a solid hydrophobic  carbonate residue is being formed with a Calorific Value around 5.550 kcal/kg.

  For biomass torrefaction it is used material with low ash concentration (< 3 %), such as wood-chips, pomace, wood residues, agricultural residues etc. The biomass is being dried below 10 % and then grinded to the desirable size. Then is being feeded into a reactor, where it is heated at around 350 oC with variable time depending on the quality that has to be produced. After the completion of the process, the products are 70-90 % torrefied biomass and 10-30 % gas. 

  •   The gas is being used for the biomass drying process and the endothermic torrefaction reaction, hence no waste residues are produced from the facility. 
  •   The torrefied biomass can be used as a substitution of pet-coke or other fuels. 

 

 ADVANTAGES

  • HOMOGENEOUS FUEL - (IMPROVED SUPPLY RELIABILITY/REDUCED FUEL COST/IMPROVED FUEL AVAILABILITY)
  • HIGHER HEATING VALUE
  • HYDROPHOBIC FUEL - (TRANSPORTATION & HANDLING ARE CHEAPER/STORAGE OUTSIDE)
  • HIGH GRINDABILITY
  • CLEANER FUEL WITH LESS ACIDS IN THE SMOKE

 

torre mat

FUEL COMPARISON

 

INDUSTRIAL USE RESULTS

 

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