primary combustion

Primary combustion is the initial stage in burning waste within a furnace. This process drives off moisture and ignites the waste. It is followed by secondary combustion, which oxidizes remaining unburned gases and particulates, reducing odors and fly ash. This controlled burning significantly reduces waste volume, converting it into ash and gases. Modern incinerators are equipped with emission control devices to manage by-products before they are released into the atmosphere. Some waste-to-energy plants utilize the heat generated from combustion to produce steam or electricity, offering an economically viable solid-waste management option. The nature of burned waste has shifted from primarily organic materials to include synthetics like plastics, raising environmental and health concerns.123