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What are the benefits of using bagasse as a fuel?
The main benefits of using briquetted bagasse as a fuel are:
Emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) are lower than conventional fossil fuels due to the characteristically low levels of sulfur and nitrogen associated with bagasse.
Helps to reduce the greenhouse gases (GHGs) in the atmosphere.
Low ash content of 2-10% as compared to 20-40% in coal
The indiscriminate disposal of bagasse and/or the disposal cost/fees are eliminated.
Bagasse is a renewable resource can play a major role in substituting fossil fuel for future power generation.
What is briquetting of bagasse and what are the advantages of using bagasse in a briquetted form?
Briquetting technique is densification of the loose biomass with biomass briquettes machine; this is achieved by subjecting the biomass to heavy mechanical pressure to form compact cylindrical form known as briquettes. Owing to high moisture content direct burning of loose bagasse in conventional grates is associated with very low thermal efficiency and widespread air pollution. The conversion efficiencies are as low as 40% with particulate emissions in the flue gases in excess of 3000 mg/ Nm³. In addition, a large percentage of unburnt carbonaceous ash has to be disposed off. Briquetted bagasse has low moisture content and densified form which overcomes the above mentioned problems with direct firing of bagasse. Thus briquetted bagasse can be used as a potential fuel to substitute the fossil fuels.
Following are the benefits of briquetting bagasse:
High calorific value ranges between 3,500-5,000 Kcal/Kg4
Moisture percentage is very less (2-5%) compared to lignite, firewood & coal where it is 25-30%
Economic to users compared to other forms
Briquettes can be produced with a density of 1.2 g/cm³ from loose biomass of bulk density 0.1 to 0.2 g / cm³.
Easy in handling and storage due to its size.
Where is bagasse briquetting practised commercially?
Bagasse briquetting is commercially practised in a majority of the south east region countries; India, Philippines, Indonesia, Bangladesh, Nepal, Thailand, China, Malaysia with some pilot projects in Vietnam and Sri Lanka and in the African continent; Tanzania, Cuba, Kenya and Brazil. However it’s not practiced in Egypt. The two models of manufacturing briquettes for commercially use in Egypt can be as follows;
A. Sugar mills can procure the technology and manufacture briquettes for their personal usage and the excess can be sold in market.
B. Sugar mills can set up joint venture with technology providers to set up manufacturing units, by providing land. The briquettes can be purchased by the sugar mills, the excess can be sold in market.