briquetting technology, briquets, types, advantages, different types of briquetting machine, piston type, screw type

1. Renewable Energy and
Green Technology
Topic: Briquetting
by
Dr. Sanjay Singh Chouhan
Assistant Professor
College of Agriculture, JNKVV,
Powarkheda, Hoshangabad

2. Briquetting
• The process of compaction of biomass into a product of higher
density than the original raw material is known as densification
or briquetting.
• The loose biomass to form briquettes has compression ratio of
approximately 7:1.
• Briquetting of biomass is an age old technology and specially in
India, is as old as time. Cowdung cakes, fuel balls made from
coal-dust are some examples.

3. • The process of briquetting consists of applying pressure to a
mass of particles with or without binder and converting it into a
compact aggromate.
• The products obtained could be in a solid geometrical form or in
the form of hollow cylinders.
• The compacted fuels, known as briquettes is more or less similar
to coal and has potential to replace conventional solid fuels and
even diesel to meet the local needs of various sectors.
• These briquettes can burn with a smokeless and clean flame,
ideal for domestic and small scale heating purpose.

4. Advantages in briquetting of biomass
1. The process helps to solve the problem of loose waste / residues
of agricultural forestry and agro-industrial processing so as to
check environmental pollution.
2. The process increases the net calorific value per unit volume.
3. The fuel produced is uniform in size and quality.
4. No toxic gas and sulphur emission, even no odour during
combustion.
5. Densified product is easy to transport and store. Bulk density of
briquettes (1000 kg /m3) is higher than agro-wastes (50 kg /m3).
6. Fire risk in loose storage of biomass is minimized.

5. 7. The process produces high quality fuel with very low ash
content (2-5 %) compared to 30-40% in case of coal.
8. The briquettes are easy to burn, as briquettes have lower
ignition temperature compared to coal.

6. Briquetting Machine at CIAE, Bhopal

7. Conversion of Waste to Wealth

8. Briquetting Technology
1. Piston-Ram Press Technology
2. Screw Press Technology

9. Piston-Ram Press Technology

10. Piston-Ram Press Technology
• This technology primarily involves drying, grinding, sieving,
compacting and cooling operation.
• Any moisture in raw material is first remove in dryer.
• Dried material is ground in a hammer-mill grinder.
• Grinded material is separated from air in cyclone separator.
• Then pass through a screen for sieving and thereafter stored in a
bin which is placed over briquetting press.
• The ram in the press continuously pack material through a taper
die and briquettes are produced.

11. Screw Press Technology

12. Screw Press Technology
• In this process, the biomass material is initially dried to get
optimum moisture content by passing hot air produced by
burning of some briquettes in the furnace.
• The dried biomass material is further preheated to a
temperature of 100 to 120’C in a oil-heated heat exchanger.
• The material is fed to a screw press where a revolving screw
(600rpm) compacts material.
• Then it is forced through a heated die to get final briquettes.

13. Thanks for listening…..
JNKVV- College of Agriculture, Powarkheda 13