Which is not an essential factor in the combustion phase of an incinerator?

Moisture is not considered an essential factor in the combustion phase of an incinerator. The primary requirements for effective combustion include sufficient time, appropriate temperature, and adequate turbulence.

Time is critical in ensuring that waste materials are exposed to high temperatures long enough to allow for complete combustion, thus reducing emissions and ensuring the destruction of hazardous materials. Temperature needs to be sufficiently high to facilitate the chemical reactions necessary for combustion to occur, typically reaching levels around 800 to 1000 degrees Celsius or more, depending on the materials being burned. Turbulence enhances the mixing of fuel and air, which promotes more effective combustion by ensuring that all material comes into contact with the necessary oxygen.

Moisture, while it can affect the efficiency of combustion—by reducing the effective heating value of the fuel and potentially leading to increased emissions—is not a fundamental requisite in the combustion process itself. It is more of a variable that can influence the effectiveness and efficiency of combustion rather than a direct necessity for the combustion phase.