The document provides an overview of pyrolysis, a thermo-chemical decomposition process of organic materials into gases, liquids, and solids without oxygen. It discusses the three types of pyrolysis (slow, fast, flash), their processes, uses, applications, advantages, and disadvantages. The conclusion emphasizes pyrolysis's potential for high efficiency and environmental benefits, particularly in converting waste into clean energy.

1. PARALA MAHARAJA ENGINEERING COLLEGE
BERHAMPUR
PYROLYSIS
PRESENtEd BY:-
NAME- JAGAMOHAN BEHERA
REGd.NO- 2021109026
BRANCH- CHEMICAL ENGINEERING

2. CONtENt
 Introduction
 Types Of Pyrolysis
 Pyrolysis Process
 Uses Of Pyrolysis
 Application Of Pyrolysis
 Advantages & Disadvantages Of Pyrolysis
 Conclusion
 References

3. INtROdUCtION
 Pyrolysis is a thermo chemical decomposition of organic material into liquid,
gases and solid at elevated temperature in the absence of oxygen.
 “Pyrolysis” is a Greek word :-
Pyro :- ‘fire’/ ‘heat’
lysis :- ‘Separating’ / ‘breakdown’
 Pyrolysis Process is an Endothermic Process.
 Pyrolysis Process is Irreversible.

4. tYPES Of PYROLYSIS
 Generally Three Types of Pyrolysis.
Slow Pyrolysis
Fast Pyrolysis
Flash Pyrolysis

5. SLOw PYROLYSIS
 It is characterized by lengthy Solids and gas residence times, low temperature,
Slow biomass heating rates.
 It is used to modify the solid material and minimize the oil product.
 Temperature – 400-5000C
 Residence – Long(5-30 min)

6. fASt PYROLYSIS
 It is a rapid thermal decompotion of carbon-containing materials in the absence of
oxygen in moderate to high heating rates.
 It is the most common method used in research and in practical use.
 The major product is bio-oil.
 Temperature – 400-6500c
 Residence time – (0.5-2.0 Sec)

7. fLASH PYROLYSIS
 It is very rapid thermal decomposition pyrolysis process.
 The heating rate is also very high.
 The main product are gases and bio-oil.
 Temperature – 700-10000c
 Residence Time- (Less than 0.5 Sec)

8. Fig.1. Pyrolysis Process

9. USES Of PYROLYSIS
 It reduce the risk of water pollution.
 Self- sustain energy.
 Utilization of renewable resources.
 It reduce waste going to landfills and green house gas emission.

10. APPLICAtION Of PYROLYSIS
 The heat-facilitated browning of sugar is an example of the pyrolysis
process.
 Many common cooking techniques involve pyrolysis like grilling, Frying,
toasting and roasting.
 It is widely used in the chemical industry to produce methanol, activated
carbon, charcoal and other substance from wood.

11. AdvANtAGES & dISAdvANtAGES Of PYROLYSIS
Advantages
 Simple.
 Low cost technology.
 Low risk of water pollution .
 Low risk of odours .
 High recovery rate of resources .
Disadvantages
 Technology is still evolving.
 Market are yet to be developed for
char product and pyrolysis liquid.

12. CONCLUSION
 Pyrolysis has been attracting much attention due to its high efficiency and good
environmental performance characteristics.
 It also provides an opportunity for the processing of agricultural residues, wood
wastes and municipal solid waste into clean energy.

13. REfERENCES
 Samolada MC. Catalyst evaluation for catalytic biomass pyrolysis. Energy & Fuels.
2000.
 Yaman S. Pyrolysis of biomass to produce fuels and chemical feed stocks. Energy
Conversion and Management. 2004.