This paper discloses a rotary dangerous kiln multi-stage two-combustion chamber, which belongs to the field of hazardous waste incineration rotary kiln. The two combustion Chambers include: vertical chamber, descending chamber, intermediate chamber and end chamber; Vertical installation of the vertical chamber, the lower vertical chamber body is provided with rotary kiln mouth; The descending arrangement is in the lateral chamber of the vertical ascending chamber; The middle segment of the ascending upper chamber is connected with one end of the descending segment of the ventricular body. Lower compartment body reduced, one end of compartment body; Waste heat boiler connector, the other end of the hall. The two combustion Chambers have the advantages of adequate oxygen supply, long residence time of flue gas, large turbulent flow of flue gas, twice combustion of flue gas and easy settlement of fly ash.
[Background technology]
Rotary kiln is widely used incineration equipment in the field of hazardous waste disposal. Solid hazardous waste is transported to rotary kiln through special conveying equipment, and liquid hazardous waste is sprayed into the end of kiln by efficient atomizing device. The process of evaporation, volatilization analysis, ignition and combustion is completed in the wastewater of rotary kiln. The slag is discharged from the bottom of the back end plate and the flue gas generated sends the unburned waste particles to the two combustion Chambers. The temperature of the two combustion Chambers is 850 °C and 1200°C, and the smoke residence time exceeds 2s.The hazardous components and unrecompensed organic matter in the flue gas decompose in two combustion Chambers. The flue gas discharged from two combustion Chambers is purified by quench tower, waste heat boiler, bag filter, deacidification tower and so on.
In the field of hazardous waste incineration, it is more suitable for straight cylinder combustion chamber. The flue gas of the rotary kiln is discharged from the side of the tail plate. The flue gas does not contact the air and fuel in the transition flue. It doesn't burn completely. Coke is easy and needs constant repair. The two combustion Chambers of straight cylinder type have low turbulence, short mixing time and insufficient combustion effect. The high content of dust and harmful substances in flue gas brings more burden and consumption to the follow-up exhaust purification equipment.
The utility model to solve the technical problems are two more sections of the combustion chamber to provide hazardous waste incineration of rotary kiln, have enough oxygen supply, gas residence time, turbulence, flue gas double degree of fly ash is burned, easy to settlement, etc., can reduce consumption burden of tail gas purification equipment, reduce harmful ingredients such as dioxin, heavy metal in flue gas, flue gas emission rate.
