Pyrolysis
Contents |
[edit] Introduction
Pyrolysis is a thermochemical term describing the decomposition of organic (carbon-based) materials, by the application of heat, in the absence of oxygen - which causes physio-chemical separation of the material into different molecules. As such the process can convert carbon-based materials into drop-in hydrocarbon biofuels, oxygenated fuel additives and petrochemical replacements.
[edit] Traditional methods
Traditionally charcoal was made by burning wood in covered pits, so without oxygen, then extinguished quickly. This was a hand method of creating the thermochemical process of pyrolysis with wood.
[edit] Modern methods
Pyrolysis of wood today is often industrialised and can produce bio-oil liquids, gases, and the char product. Initially the wood is carbonized at a low temperature in a kiln, then the temperature is increased up to 1000°C, turning the wood red hot. The charcoal is then quickly taken out of the kiln and covered with a powder to extinguish it and bring down the temperature.
[edit] Different types of processes
In general there are three approaches to carrying out pyrolysis:
- Conventional/slow pyrolysis.
- Fast pyrolysis.
- Ultra-fast/flash pyrolysis.
There are then a variety of different technical methods and also a variety of materials that can be processed to create fuels, these include plastics, tyres, biomass and general waste as well as others.
[edit] Related articles on Designing Buildings
- Advanced bioenergy.
- Biochar.
- Biogas.
- Biomass CHP.
- Biomass.
- Biomethane.
- Combined heat and power (CHP).
- District energy.
- Drop-in hydrocarbon fuels.
- Energy.
- Environmental impact of biomaterials and biomass (FB 67).
- Feed in tariff.
- Fossil fuel.
- Methane pyrolysis.
- Solid biomass.
- Stove.
- Renewable heat incentive.
- Types of boiler.
- Types of fuel.
- Wood pellet mill basics.
Featured articles and news
Registered building inspectors
Building types and conflicts of interest updates explaineed.
Engineering services still struggle with labour shortages
According to latest quarterly services survey of the sector.
Infrastructure that connect the physical and digital domains.
Harnessing robotics and AI in challenging environments
The key to nuclear decommissioning and fusion engineering.
BSRIA announces Lisa Ashworth as new CEO
Tasked with furthering BSRIA’s impressive growth ambitions.
Public buildings get half a million energy efficiency boost
£557 million to switch to cleaner heating and save on energy.
CIOB launches pre-election manifesto
Outlining potential future policies for the next government.
Grenfell Tower Inquiry announcement
Phase 2 hearings come to a close and the final report due in September.
Progress from Parts L, F and O: A whitepaper, one year on.
A replicated study to understand the opinion of practitioners.
ECA announces new president 2024
Electrical engineer and business leader Stuart Smith.
A distinct type of countryside that should be celebrated.
Should Part O be extended to existing buildings?
EAC brands heatwave adaptation a missed opportunity.
Definition of Statutory in workplace and facilities management
Established by IWFM, BESA, CIBSE and BSRIA.
Tackling the transition from traditional heating systems
59% lack the necessary information and confidence to switch.
The general election and the construction industry
As PM, Rishi Sunak announces July 4 date for an election.
Eco apprenticeships continue help grow green workforce
A year after being recognised at the King's coronation.