Briquetting is the process of creating briquettes. Let us first understand what is a briquette. A briquettes is basically a block of compressed biomass waste obtained from natural materials like agricultural waste, forestry waste, seed covers, coal pieces, etc. These briquettes act as the best substitute for non renewable fuel that is nature friendly. This poses no harmful effect on the environment and is atmosphere friendly. The main use of these briquettes is as a substitute to fuel, coal, cooking and even in boilers.
Briquetting is one of the compaction technologies for densification of waste materials and convert it into something useful. The raw materials used in preparing briquetting consist of coal, charcoal, wood, saw dust, paper, stalks, etc. They are compressed in special briquetting press machine to generate a uniform shaped briquette that can be used to ignite fire and generate energy. The briquettes prepared come in different shape and size depending on the application for which it is to be used.
In briquetting process the materials are first crushed into small size so that they can be compressed properly and burn easily. Special crushing machine is available in the market to crush the raw materials. The briquette are highly preferred in the locations where fuel is hard to find and is costly. Thus at such places briquetting can become the best option for getting fuel at cheap price and easy way. The main advantage in briquetting plant is that it does not require any binder to bind the materials together to form a briquette. Thus it is also known as binder-less technology.
The process of briquetting consists of following steps:
- Gathering biomass waste material
- Compressing to form briquette
- Drying the briquette
The briquettes are chosen over coal and other non renewable fuel that are hard to obtain and generate. The advantage of briquetting is the high calorific valve useful in easy ignition. Also other key factors for briquetting are low production cost, waste material management and conversion of waste to revenue.
Briquettes are useful in many ways for production of electricity and generation of energy in the form of fuel. Despite having various usefulness, briquettes have some drawbacks.
Advantages of Briquetting:
- The main benefit that we get from briquetting is that is replaces the usage of conventional type of fuels
- Considered as best renewable source of fuel and energy
- It causes negligible pollution as it does not emit sulphur or fly ash
- Has great thermal calorific value
- It uses agro-waste and/or bio-waste to produce briquette thus it is very cheap
- They are easy to store, handle and transport from one place to another
- Useful in many applications of domestic, commercial and industrial area
- Prevents deforestation and conservation of natural resources
- Has consistent combustion and the ignition temperature is low compared to coal
- Best option for agricultural waste disposal
- Briquetting helps in getting tax benefits
- Low moisture content results in higher burning efficiency
- No sulphur or any unsafe gas emission
- Briquetting produces briquettes that have smokeless burning
- Reduces the waste volume for nearly 90% due to compression
- Does not have corrosive effect on the equipment in which it is used
Disadvantage of Briquetting:
- The main disadvantage of briquetting is the process of densification as it required more energy
- The high cost of input energy increases the price
- Initial investment for briquetting is very high
- Large space is required for setting up the plant
- Requires special machines for shredding, crushing and drying the briquette
- Atmospheric conditions affect the quality of briquettes
- Humidity in weather loosens the combustion characteristic
- Requires large waterproof space to store the briquettes