The important parts of the incinerator are:

- Combustion Chamber: The area where the waste materials are burned at high temperatures to convert them into ash and gases.
- Afterburning Chamber: The secondary combustion chamber where the gases from the primary chamber are burned again to ensure complete combustion.
- Oil Burner Assembly: It contains primary and Waste oil burners. The fuel (usually diesel oil) is supplied to the primary burner to ignite and maintain combustion within the incinerator.
- Primary Blower: The equipment that blows air into the incinerator to promote the combustion process.
- Fuel Gas outlet: The exhaust passage, which can be fitted with an Induced Draught Air Ejector device that pulls the gases produced in the incinerator out of the combustion chamber.
- Air Damper: A valve or plate that regulates the flow of air and gases within the incinerator.
- Double Wall for Air Cooling: An insulated layer of air between two walls to prevent excessive heating and cool the outer surface of the incinerator
- Feeding Door: The opening through which the waste materials are fed into the incinerator.
- Diesel Oil Tank: The storage tank for diesel oil to be used as fuel for the oil burner
- Ash Cleaning Door: The door, usually at the bottom of the primary chamber, through which the ash residue from the incineration process is removed from the chamber (not shown in the figure).
- W.O Supply Tank: The storage tank for waste oil to be used as fuel (not shown in the figure).
- Compressed Air: Pressurized air is used to operate certain parts of the incinerator, such as dampers or ash cleaning systems (not shown in the figure).
- W.O. Dosing Pump: A pump used to regulate the flow of waste oil to the incinerator(not shown in the figure).
- Heating Element: A device that provides heat to start the combustion process, especially when the incinerator is cold (not shown in the figure).
- Sluice: A gate or valve that regulates the flow of waste materials into the incinerator (not shown in the figure).
- Sludge service tank with a circulating pump and heater (not shown in the figure).
- Sludge settling tank with filling pump and heater (Optional)
- Water injection (Optional)
- Rotating the arm to remove ash and non-combustibles (for vertical cyclone type)
- Refractory Lining: A heat-resistant layer made of refractory materials that line the combustion chamber to protect the metal walls from high temperatures and corrosive gases produced during incineration.
- Ceramic Wall: A high-temperature-resistant ceramic material wall that separates the primary and secondary combustion chambers to maintain the proper temperature and combustion conditions in each chamber.