Dust suppression system for dust silo

Abstract

The invention discloses a dust suppression system for a dust silo. The dust suppression system comprises a dust hood device 1, a negative-pressure pipe network system 2 and a dust catching and collecting device 3, wherein the dust hood device 1 is set with a telescopic structure; one end of the negative-pressure pipe network system 2 is connected with the dust hood device 1; the other end of the negative-pressure pipe network system 2 is connected with the dust catching and collecting device 3. Overall design of the dust suppression system for one or more dust silos can be performed according to the characteristics of different dust samples, dust produced in a discharging process is controlled, water vapor produced by contact of hot ash with stirring water is controlled, the distance between a discharging hole and the bottom of a carriage is adjustable, and dust and water vapor can be collected and treated concentrically, so that the problem of raise dust on a double-shaft stirrer in a power plant dust silo is solved, and environmental sanitation and working personnel health in a power plant dust silo region are realized. The dust suppression system has good reference and guidance significance to the cultured production design of future dust silo regions and the design of similar discharging regions such as residue siloes.

Description

technical field [0001] The invention relates to the technical field of dust treatment in a power plant, in particular to a dust control system for dust in an ash storehouse of a power plant. Background technique [0002] The ash storage is a prone point of dust pollution in power plants. The main reason is the dust pollution caused by the traditional fly ash unloading device in the process of unloading and loading. This has become a difficult problem in the design and operation of the industry. The resulting environment Pollution is also inevitable. Many owners have proposed to place the pollution source of the ash storage outside the factory area, away from the main factory building. With this plan, although the environmental sanitation of the factory area can be guaranteed, the problem of the pollution source is still not solved, and it will make the ash conveying system The transmission distance increases a lot, which brings unnecessary investment, operation energy consum...

AI Technical Summary

Problems solved by technology

The mixing water volume of the twin-shaft mixer is manually adjusted, which puts the operator's ability to the test. If the water volume is small, the effect of humidification and mixing will not be achieved, and dust will fly during loading and transportation; if the water volume is large, the moisture content of fly ash will increase. If it is too high, it will flow out in a slurry form, causing ground pollution in the carriage and ash storage, and even causing dripping pollution along the way of transportation.

[0004] 2. The spray device of the mixer is often blocked

Therefore, it is necessary to regularly clean the scale inside the tank. Once the cleaning is not timely, it will affect the normal operation of the mixer and affect the mixing effect.

[0007] 5. Compared with the bulk machine, the twin-shaft mixer does not have a supporting dust collection system. The fly ash from the dust collector usually has a temperature of tens of degrees. If it is the bottom slag, the temperature can reach 150°C

During the mixing process, a certain amount of water vapor will be generated when the ash contacts with water, causing a certain amount of pollution in the ash storage area

[0008] 6. The discharge pipe of the double-shaft mixer is generally a straight pipe, and the distance between the discharge port and the loading vehicle cannot be adjusted, so that the initial height of the ash discharge is very high, and it is inevitable to cause dust during the loading process.

[0009] 7. During the unloading process of the ash warehouse, the fluidized air system will be turned on, and the fluidized air will be mixed with the ash and unloaded together, causing dust pollution during the loading process

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