Fluidized bed jetting adsorbent smoke demercuration device and method thereof
A fluidized bed and adsorbent technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the uneven dispersion of activated carbon powder, increase the dispersion uniformity and residence time of adsorbent powder, and shorten the residence time of activated carbon To achieve the effect of increasing the contact area and contact time, increasing the uniformity of dispersion, and improving the performance
Inactive Publication Date: 2014-05-07
SOUTHEAST UNIV
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Problems solved by technology
[0004] Technical problem: The present invention aims at the shortcomings of uneven dispersion of activated carbon powder and short residence time of activated carbon in the prior art, and provides a flue gas mercury removal device for fluidized bed jet adsorbent, which uses fluidization technology and flow The entrainment characteristics of the fluidized bed, using the flue gas as the fluidization wind to fluidize the adsorbent powder, increases the dispersion uniformity and residence time of the adsorbent powder in the flue gas
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[0021] The present invention will be further described below in conjunction with the accompanying drawings.
[0022] The invention discloses a flue gas mercury removal device and method for a fluidized bed spraying adsorbent. The device utilizes the fluidization technology and the entrainment characteristics of the fluidized bed, and is composed of flue gas bypass, adsorbent delivery, fluidized bed and powder homogenizer. The bed material of the fluidized bed is quartz sand particles of appropriate particle size and small particle size adsorbent powder; the flue gas is extracted from the upstream of the coal-fired boiler flue between the air preheater and the dust collector as the fluidized air of the fluidized bed; the air volume is adjusted Match the amount of powder fed to achieve the uniformity of the particle distribution of the outlet material; the fine particles entrained by the gas enter the flue through the powder homogenizer and mix with the gas in the flue. This fl...
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The invention discloses a fluidized bed jetting adsorbent smoke demercuration device and a method of the fluidized bed jetting adsorbent smoke demercuration device. The device comprises a smoke bypass, an adsorbent conveying part, a fluidized bed (6), a powder scatterer (12) and a dust collector (13), wherein the smoke bypass comprises a cyclone separator (3), a control valve (4), a fan (5) and corresponding pipelines; the adsorbent conveying part comprises a screw feeder (10) and a storage bin (11); the fluidized bed (6) comprises the main part of the fluidized and jetted adsorbent powder. The method comprises the following steps of extracting the smoke from the upper stream of a boiler flue (2) between an air preheater (1) and the dust collector (13) by the fan (5), removing the fly ash by the cyclone separator (3), and sending the smoke to an air chamber (8) of the fluidized bed (6). According to the fluidized bed jetting adsorbent smoke demercuration device provided by the invention, the problem that the powder absorbent is jetted non-uniformly during the smoke jetting demercuration is solved, and the reaction degree of the adsorbent and the mercuric in the smoke is simultaneously increased.
Description
technical field [0001] The invention relates to a flue gas mercury removal device for fluidized bed spraying adsorbent, which is suitable for removing mercury and other pollutants by spraying activated carbon and other powdered adsorbents in the tail flue of coal-fired power stations and waste incineration power stations, and belongs to the control of coal-burning air pollutants field. Background technique [0002] Mercury is a toxic substance that can circulate around the world and accumulate permanently in organisms and food chains. It can cause neurotoxicity and deep tissue lesions in humans. Methylmercury can also cause damage to chromosomes, thereby affecting genetics. influences. [0003] As the largest anthropogenic pollution source of mercury emissions, the control of mercury emissions from coal-fired power plants is urgent. Activated carbon injection mercury removal technology is an effective mercury pollution control technology. The commercial demonstration of ac...
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IPC IPC(8): B01D53/12
Inventor 段钰锋冒咏秋王军龙周强朱纯桑圣欢
Owner SOUTHEAST UNIV