About Incineration:
- Incineration is the process of burning hazardous materials at temperatures high enough to destroy contaminants.
- Incineration is conducted in an “incinerator,” which is a type of furnace designed for burning hazardous materials in a combustion chamber.
- Many different types of hazardous materials can be treated by incineration, including soil, sludge, liquids, and gases.
- Although it destroys many kinds of harmful chemicals, such as solvents, PCBs (polychlorinated biphenyls), and pesticides, incineration does not destroy metals, such as lead and chromium.
- Waste incineration can be a form of waste-to-energy because the heat generated during combustion can be used to create electricity.
- How Does It Work?
- Hazardous materials must be excavated or pumped into containers before incineration.
- They may require further preparation, such as grinding or removing large rocks and debris, or removing excess water.
- The materials are then placed in the combustion chamber of an incinerator where they are heated to an extremely high temperature for a specified period of time.
- The temperature and length of time depend on the types of wastes and contaminants present.
- Air or pure oxygen may be added to the chamber to supply the oxygen needed for burning.
- As the wastes heat up, the contaminants volatilize (change into gases), and most are destroyed.
- Gases that are not destroyed pass through a secondary combustion chamber for further heating and destruction.
- The resulting gases then pass through air pollution control equipment, which removes particulate matter (extremely small particles or liquid droplets) and “acid gases.”
Q1: What is combustion?
Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer.
Source: FPJ
Last updated on Dec 26, 2024
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