High Levels of NOx and/or SOx
Wastes are supplied to a disposal process in the form of either gas, liquid or solid, or a combination thereof. There are six possible configurations to dispose of either a gas or liquid industrial waste which produces a flue gas containing acceptable amounts of NOx and/or SOx.
Configuration 1.1 – thermal oxidizer supplied with waste, fuel and combustion air
Configuration 1.2 – thermal oxidizer fitted with a heat recovery boiler
Configuration 1.3 – thermal oxidizer fitted with a gas-to-gas heat exchanger
Configuration 1.4 – thermal oxidizer fitted with a gas-to-gas heat exchanger and a heat recovery boiler
Configuration 1.5 – catalytic oxidizer fitted with a gas-to-gas heat exchanger
Configuration 1.6 – regenerative oxidizer with refractory packing
Fuel is required when the waste’s combustion energy is insufficient (endothermic) to produce an appropriate operating temperature. An exothermic waste requires a cooling medium such as excess air, steam, or water for temperature control.