After a basic understanding of what is scrap metal incinerator, you may wander how does it work? OK, let’s move to the next topic the working process of scrap metal incinerators.
A typical scrap metal recycling incinerator is operated in batch mode 8 hours every day and 5 days per week. But, operation is divergent and largely dependent on scrap quality. At the beginning of a batch, a charge of scrap material is placed in the primary chamber and is fired using paper or the primary chamber burner, if one exits. Gases from the primary chamber flow through the secondary chamber, where some settling of large particulate occurs, and then to the afterburner, where the flue gases are up to 1090℃ to control emission prior to discharge to the atmosphere. Natural gas is usually used as the auxiliary fuel for a scrap incinerator.
At the same time, most incinerators use afterburner to complete the combustion of the exhaust gases in order to control the emissions of exhaust gases. Some scrap metal incinerators may be equipped with particulate collection devices like fabric filter, but most have no additional controls other than the afterburner.
A great percentage of incinerators operate with little or no instrumentation to measure temperature or control draft and oxygen level. Combustion conditions can be controlled by changing the amount of air allowed into the primary chamber during combustion. The amount of temperature is controlled by opening or closing the doors and the draft registers. But, many operators do not operate according to the requirement for the temperatures and amount of oxygen in order to increase output.