Dry type dust removing method for asphalt flue gas
A technology for asphalt flue gas and dry dust removal, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of incomplete physical adsorption removal, entry of viscous smoke and dust, and large equipment investment, so as to solve the problems of water treatment. problems, reducing dust removal costs, and the effect of high dust removal efficiency
Active Publication Date: 2013-06-05
LIAONING BEIHUAN PURIFICATION TECH
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Problems solved by technology
[0007] Although the above-mentioned technical scheme can make the treated fume well purified and lose its viscosity, this pre-treatment of fume has the disadvantages of large equipment investment, large energy consumption and high processing cost, and physical adsorption removes If it is not thorough, there will still be a certain amount of viscous dust entering into the subsequent dust collector
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[0017] specific implementation plan
[0018] Such as figure 1 As shown, the asphalt flue gas dry dust removal method provided by the present invention is as follows: the asphalt flue gas is treated with ozone gas before entering the bag filter, and the mixed asphalt flue gas enters the bag filter to be recovered in the form of dust particles , the purified flue gas is emptied through the chimney.
[0019] Take different concentrations of ozone from 0.01 to 350 mg / L ozone, and pass them into the asphalt fume exhaust pipe. After reacting with ozone, the asphalt fume enters the bag dust removal equipment. After 24 hours, observe the bag dust removal equipment and find that The higher the concentration of ozone is, the less viscous substances adhere to the pipe wall of the bag filter equipment, until the ozone concentration reaches the maximum value, there is no sticky substance adhered to the pipe wall of the bag filter equipment.
[0020] Introduce different concentrati...
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Abstract
The invention relates to a dry type dust removing method for asphalt flue gas. The method is characterized in that an ozone gas treatment is added before asphalt flue gas enters a dust remover, the mixed asphalt flue gas enters the dust remover and is recovered in a dust particle form, and the purified flue gas is discharged to the air through a chimney. With the present invention, the traditional thinking bondage is broken, and the asphalt flue gas viscosity treatment is changed from the traditional physical absorption to chemical modification, such that polycyclic aromatic hydrocarbons in the asphalt flue gas are subjected to oxidation reduction to obtain dust particles so as to effectively avoid adhesion of the asphalt smoke on cloth bags or polar plates.
Description
technical field [0001] The invention relates to an asphalt flue gas dust removal method, in particular to an asphalt flue gas dry dust removal method for asphalt fume (gas) in the carbon industry, which belongs to the field of asphalt flue gas dust removal technology and is also suitable for producing asphalt in other industries Used in flue gas dust removal. Background technique [0002] The carbon industry usually uses coke as raw material and coal tar pitch as binder, and processes it into various carbon products through raw material preparation, batching, kneading, pressing, roasting and other processes. Every production process has productive dust escaping, especially in the process of asphalt melting, kneading, pressing, and roasting, a large amount of asphalt smoke (gas), smoke, SO2, fluoride and other pollutants will be produced. [0003] Asphalt fume is the main flue gas pollutant emitted by the carbon processing industry. Asphalt fume consists of three phases of g...
Claims
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Login to View More IPC IPC(8): B01D53/76B01D46/02
Inventor 李德生
Owner LIAONING BEIHUAN PURIFICATION TECH