Waste residue and exhaust gas incinerator refers to an incinerator with refractory lining inside a cylindrical body made of steel plate. Set slightly inclined from the horizontal, while slowly rotating, to transfer the waste supplied from the upper part to the lower part, and supply air from the front or rear to burn it. Usually, a secondary combustion chamber is installed after the rotary kiln to allow the toxic and harmful gases that have not been completely burned during the previous pyrolysis to be completely burned in a high-temperature oxidation state.

The notice issued by the Ministry of Environmental Protection on the "Technical Policy for Prevention and Control of Hazardous Waste Pollution" and the entry "Technical Policy for Prevention and Control of Hazardous Waste Pollution" on Baidu Baike states that "hazardous waste incineration can achieve the reduction and harmlessness of hazardous waste, and can recycle and utilize the remaining heat. Incineration disposal is suitable for hazardous waste that is not suitable for recycling its useful components and has a certain calorific value. Explosive waste is not suitable for incineration disposal." "The incineration of hazardous waste should adopt incineration technology based on rotary kilns, and different types of furnaces can be selected according to the types and characteristics of hazardous waste. It is encouraged to transform and adopt rotary kilns for cement production for incineration or specialized incineration of hazardous waste. This policy was implemented on December 17, 2001.

In recent years, the market for hazardous waste incineration construction in China has become increasingly mature. The trend is approaching the use of waste incineration furnaces with different combinations, and there is still a lot of technological development space for specific improvements in application.

Waste residue and exhaust gas incinerators are divided into downstream furnaces and countercurrent furnaces, melting furnaces and non melting furnaces, furnaces with refractory materials and furnaces without refractory materials. A co current furnace refers to a furnace where the combustion airflow and waste flow are in the same direction, and there is a significant temperature difference between the flue gas at the waste inlet and the waste temperature, which can quickly evaporate the moisture in the waste; A counter current furnace means that the combustion airflow and waste flow are in opposite directions. A melting furnace refers to an incinerator operated at high temperatures (1200-1300 ℃), which can simultaneously process waste such as general organic matter, inorganic matter, and polymer compounds; When the temperature inside the furnace is below 1100 ℃ in the normal combustion temperature range, it is a non melting furnace.