Device and method for removing ultrafine particles in flue gas of coal boiler

A technology for coal-fired boilers and ultra-fine particles, which is applied to combined devices, separation methods, chemical instruments and methods, etc., can solve the problems of large resistance, complicated actual operation, and many equipment, and achieves increased collision probability, increased agglomeration efficiency, The effect of less steam
CN105597477AInactive Publication Date: 2016-05-25HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2016-05-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a device and a method for removing ultrafine particles in flue gas of a coal boiler. The device is characterized by being sequentially provided with a flue gas steam ejector, a steam phase transformation gathering chamber, a turbulence gathering chamber and a demister behind a desulfuration device along the flow direction of flue gas during a technological process, wherein the outlet of the demister is connected with an electrostatic dust collector; one end, which is connected with the desulfuration device, of the flue gas steam ejector is provided with a flue gas inlet, and the upper part of the flue gas steam ejector is provided with a steam inlet; the turbulence gathering chamber is internally provided with turbulent flow cylinders and turbulent flow vortex sheets; the turbulent flow cylinders are distributed in the front part of the turbulence chamber, and a plurality of turbulent flow vortex sheets are distributed at equal intervals behind the turbulent flow cylinders in a staggered manner; one end of the turbulence chamber is connected with the outlet of the steam phase transformation gathering chamber, and the other end of the turbulence chamber is connected with the inlet of the demister.
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Description

technical field

[0001] The invention relates to the technical field of dedusting devices, in particular to a device and method for removing ultrafine particles from flue gas of a coal-fired boiler. Background technique

[0002] Coal resources are one of the most important fossil fuels in my country, with abundant reserves. The energy structure dominated by thermal power will not change in a short period of time. The dusty flue gas produced by coal burning is one of the main sources of suspended particulate matter in the atmosphere. These particles drift into the atmosphere from traditional equipment (electrostatic precipitator, wet precipitator, mechanical precipitator, etc.), which is very harmful to the human body and the atmospheric environment. Most coal-fired power plants in my country are equipped with high-efficiency dust removal devices, which can remove more than 99% of the mass of smoke and dust, and can basically remove particles larger than 10 μm, but for PM 10 ...

Claims

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