Method and device for removing coal fire discharged absorptive particles and precursor thereof
A technology for particles and precursors, which is applied in the field of removal of inhalable particles and their precursors, can solve the problems of no removal of precursors, large equipment footprint, and high investment costs, so as to save money and floor space , Increased recycling rate, good purification effect
Active Publication Date: 2008-03-05
TSINGHUA UNIV +1
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Problems solved by technology
This kind of flue gas purification system inevitably has the disadvantages of large equipment footprint, high investment cost, and complicated operation, and it does not involve the removal of precursors of various secondary pollutants
Method used
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Embodiment Construction
[0023] With reference to the drawings, the device of the present invention includes a fluidized bed reactor 5 using calcium-based removing agent as the bed material and a bag filter 8 using a membrane filter material. The bottom inlet of the fluidized bed reactor 5 is provided with a converging nozzle 2 in the shape of a hyperbolic circular tube with a thin middle and thick ends that can accelerate the flue gas. The bottom end of the converging nozzle 2 is connected with the flue gas inlet pipe 1. The fluidized bed reactor 5 is respectively provided with a lime powder inlet 3 and an iron fly ash inlet 4 from bottom to top. The upper part of the fluidized bed reactor 5 is a flue gas outlet connected to a bag filter 8 through a connecting pipe 7. An activated carbon inlet 6 is provided on the connecting pipe 7. The bag filter 8 is provided with a purified gas outlet 10 connected to an induced draft fan, and an air chute 9 that can circulate materials is placed under it and connected...
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Abstract
The invention discloses a stripping method and device of coal-fired discharge inhalable particles in the smoke purifying and dedusting technique domain, which is characterized by the following: setting the pantographic nozzle in the entrance end of fluid-bed reactor bottom to accelerate the flue gas; connecting the bottom of pantographic nozzle with flue gas inlet pipe; setting lime powder entrance and iron fly ash entrance on the fluid-bed reactor from downward to upward sequently; connecting the flue gas outlet on the fluid-bed reactor with the bag-typed duster through the connection pipe; setting active carbon entrance on the connection pipe; connecting the draught fan with the gas purifying outlet on the bag-typed duster; placing the air chute under the bag-typed duster to circulate the material in the fluid-bed reactor. The invention can strip the inhalable particles and multiple pioneer bodies of twice pollution.
Description
Technical field [0001] The invention relates to the technical field of flue gas purification and dust removal, in particular to a method and device for removing inhalable particulate matter emitted from coal combustion and its precursors. Background technique [0002] The flue gas emitted in the industrial production process contains a large amount of harmful gases, especially the flue gas produced by combustion not only contains a large amount of primary particulate matter, but also contains SO 2 The precursors of secondary pollutants such as NOx, heavy metals and polycyclic aromatic hydrocarbons are also discharged into the atmosphere in large quantities with the flue gas. The control of inhalable particulate matter PM10 and PM2.5 has gradually received more extensive attention. As mankind puts forward more control standards for harmful components in the environment, it is imperative to propose a comprehensive and balanced air pollution control solution. [0003] Aiming at the ...
Claims
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IPC IPC(8): B01D53/81B01D53/83B01D46/02
Inventor 赵旭东姚强项光明韩毅
Owner TSINGHUA UNIV