Cyclone burner capable of preventing coking

Abstract

The invention relates to a coking prevention turbulent burner which comprises an air bellow body, a burner body and a secondary air bellow, the burner body is arranged in the air bellow body, a central air pipe is arranged in the burner body, a central fan is arranged below the right side of the central air pipe, a drum-shaped body is arranged on the left side of the central fan, and a primary air pipe is arranged below the drum-shaped body. A PA / PF pipe is arranged on the left side of the drum-shaped body, a flow collector casting is arranged at the end of the left side of the PA / PF pipe, a secondary air pipe is arranged outside the PA / PF pipe, a secondary air baffle is arranged on the inner side of the secondary air pipe, a plurality of secondary air inner baffles are evenly arranged on the circumference of the inner side of the secondary air baffle, a tertiary air pipe is arranged outside the secondary air pipe, and a combustion stabilizing assembly is arranged outside the tertiary air pipe. A mounting disc is arranged outside the stable combustion assembly; the device has the advantages that the structure is simple, the adaptability of the boiler to coal types is enhanced, the periphery of the nozzle is never coked, the dry bottom hopper is free of coke falling, and manual coke poking is not needed.

Description

technical field [0001] The invention belongs to the technical field of burners, and in particular relates to a swirling burner for preventing coking. Background technique [0002] Boiler coking has always been the main factor that plagues the safe and stable operation of boilers. The main reasons are: first, the furnace has a certain amount of melted fly ash; second, the temperature of individual areas on the furnace surface is high, and the fly ash cannot be cooled in time; third, the ignition point of the burner outlet is inconsistent. Stable, the burning area is sometimes strong and sometimes dark, resulting in strong disturbance of hot flue gas, so that fly ash frequently hits the furnace wall surface, creating conditions for the adhesion of melted fly ash, and completely solving the problem of coking. [0003] The current treatment methods: First, increase the flow rate of primary air powder at the burner nozzle, the nozzle coking phenomenon has not been alleviated, and...

AI Technical Summary

Problems solved by technology

[0002] Boiler coking has always been the main factor that plagues the safe and stable operation of boilers. The main reasons are: first, there is a certain amount of melted fly ash in the furnace; second, the temperature of some areas on the surface of the furnace is high, and the fly ash cannot be cooled in time; Stable, the burning area is strong and dark, resulting in strong disturbance of hot flue gas, frequent impact of fly ash on the furnace wall surface, creating conditions for the adhesion of melted fly ash, in order to completely solve the problem of coking,

[0003] The current treatment method: First, increase the flow rate of the primary air powder at the burner nozzle, but the coking phenomenon at the nozzle has not been alleviated, and there is still a tendency to aggravate it; second, reduce the swirl intensity of the secondary air, increase the air volume of the secondary air, and the coking phenomenon has improved a little , but the effect is not obvious. At high load, large agglomerates still occur frequently; the third is to reduce the primary wind speed, and the coking at the nozzle has been significantly improved, but the coking problem has not been solved under high load. To alleviate the problem of boiler coking under low-load conditions. In addition, due to the variety of coals fed into the furnace, the singleness cannot be determined, resulting in complex and diverse boiler combustion conditions, and the operators cannot perform standardized combustion adjustments, resulting in frequent occurrence of boiler coking. The coke blocks frequently fall, which will adversely affect the safe operation of the boiler. At the same time, the labor intensity and unsafe factors of manual coke poking will be increased, which will have a great impact on the economy and stability of the boiler operation; therefore, a structure is provided It is very necessary for a swirl burner to prevent coking, which is simple, the boiler adapts to the enhancement of coal types, never cokes around the spout, no coke falls in the cold ash hopper, and does not need to be manually poked.

Images