A Guide to Marine Incinerator’s Working Principles
A marine incinerator is a type of waste disposal unit that is used to burn solid and liquid waste materials onboard ships and other vessels at sea. This type of incinerator is specifically designed to operate in the marine environment, where it must meet strict emission standards set by the International Maritime Organization (IMO).
Atlas Incinerators for example, are used to dispose of a variety of waste materials, including food waste, paper products, plastics, and other non-hazardous solid waste. These units are typically used on larger vessels, such as cruise ships and cargo ships, but can also be found on smaller boats and yachts.
While marine incinerators are an efficient way to dispose of waste materials, they can also be a source of air pollution if not operated properly. For this reason, it is important that these units are regularly maintained and operated according to the manufacturer’s instructions.
Working Principles of Atlas Incinerators
Before the waste oil is burned inside the incinerator, it is preheated on the waste oil settling and service tanks (some ships do not have settling tanks) to evaporate the water and allow it to be burned.
- Start the incinerator – The process timer, flue gas fan, and D.O burner blower will all start automatically.
- Preheating – Following the purging period, the D.O. Burners 1 and 2 will fire up at the same time to preheat the furnace and bring it up to 650oC. (for some incinerators, the burner 1 will start at 400oC depending on the settings)
- Preheating – after the purging time, the D.O. burner 1 and 2 will start simultaneously to preheat the furnace and bring it up to 650oC (for some incinerators, the burner 1 will start at 400oC depending on the settings)
- Waste oil feeding – When the furnace temperature reaches 650oC, the waste oil burner will feed up the waste oil, and the D.O. Burner 2 will turn off. The D.O. When the furnace temperature reaches 850o C, burner 1 will shut down. Following this, only the waste oil burner will fire the waste oil at an optimal temperature of 900-950oC.
- Temperature control – when the waste oil is unable to keep the furnace temperature stable due to a variety of issues, the D.O. To keep up with the furnace temperature, burner 1 will automatically start/stop at 850oC.
- Stopping the incinerator – When the incinerator is stopped, the waste oil burner stops supplying waste oil and the flue gas fan continues to run in a controlled manner to cool down the furnace chamber.
Burning Solid Waste
Check the garbage thoroughly before introducing solid waste. Also, do not overburden the incinerator with garbage; there is a standard amount of load per charge when burning solid waste.
Furthermore, do not introduce the following solid waste into the furnace chamber:
- Cargo residues and contaminated packing materials from Annex I, II, and III.
- Polychlorinated biphenyls (PCBs)
- According to Annex V of MARPOL 73/78, the garage contains more than traces of heavy metals.
- Petroleum products that have been refined and contain halogen compounds.
- Both sewage sludge and sludge oil are not produced onboard the ship.
- Exhaust gas cleaning system residues, as well as closed containers or aerosols containing explosive materials
Failure to follow the instructions below can cause significant damage to burners and thermocouples.
The sequence for solid waste burning is nearly identical to that for waste oil, except that on solid waste, the waste oil burner will not start and solid waste will be fed through the sluice door.