What are the biomass briquettes used for?

What are the biomass briquettes used for? 

First, we need to know what biomass briquette is.

Biomass briquettes are high-density, uniform solid fuels manufactured from agricultural by-products, forestry residues, and organic industrial waste through a process of drying and high-pressure extrusion.

In essence, this process transforms loose organic waste into a highly efficient, environmentally sustainable alternative to traditional coal.

1. Raw Materials (What is it made of?)

Virtually any biomass material containing cellulose and lignin can be converted into briquettes. Common feedstocks include:

• Agricultural Waste: Rice husks, wheat straw, corn stalks, peanut shells, and sugarcane bagasse.

• Forestry Residues: Sawdust, wood chips, tree branches, and bark.

• Other Organic Matter: Coconut shells, paper scraps, and even dried animal manure.

2. How It Is Made

No chemical binders are needed—nature provides the glue through a substance called lignin.

1. Grind & Dry: The raw materials are crushed (or pulverized) into fine particles, and the moisture content is adjusted to an optimal level, usually between 8% and 12%.

2. Compress: The dried material is fed into a briquetting machine. Under extreme pressure—and sometimes heat—the natural lignin softens, acting as a “natural glue” to bind the particles together.

3. Cool & Pack: The extruded fuel logs or blocks harden as they cool, resulting in a high-density, solid end-product ready for packaging.

3. Why It Is Being Promoted (Key Advantages)

Compared to traditional firewood or fossil fuels like coal, biomass briquettes offer significant economic and environmental benefits:

• High Heat Output & Extended Burn Time: While loose biomass burns away rapidly, compressing it into high-density briquettes drastically increases its energy density. This results in a much longer, steadier burn and significantly higher thermal efficiency.

• Carbon Neutral & Eco-Friendly: The CO₂ released during combustion is equivalent to the amount the plants absorbed during growth, achieving net-zero carbon emissions. Additionally, their extremely low sulfur and ash content makes them a much cleaner alternative to coal.

• Economical & Sustainable: By transforming agricultural and forestry waste into valuable fuel, briquettes boast exceptionally low raw material costs while utilizing a 100% renewable energy source.

• Optimized Storage & Logistics: Compaction drastically reduces the bulk volume of the material. Their uniform shape makes them easy to stack, store, and transport, eliminating the fire hazards and massive space requirements associated with loose straw or stalks.

Biomass briquettes can be used for heating, cooking fuel, and electricity generation. Due to its accessibility and eco-friendly impact, biomass briquette is very popular in some countries, which can be used to generate electricity through steam in heating boilers. It can provide more calorific value to save costs on boiler fuels.

The energy produced when properly molded biobriquettes are combusted is comparable to traditional fuels. These biobriquettes can be burned in unmodified wood and wood pellet stoves, fireplaces, patio heaters and charcoal grills, and provide a low-cost method for converting organic wastes into energy.

The briquette extruder consists of a feeding hopper, screw extruder, heating coil, and forming die. The screw extruder rotates and compresses the biomass materials, forcing them through the forming die to produce briquettes of required shapes and sizes.