Novel wastes incineration flue gas purification system and process thereof

A technology for incineration of flue gas and purification process, applied in incinerators, combustion methods, combustion types, etc., can solve problems such as damage to the atmospheric environment, shortened service life, waste of activated carbon or slaked lime, etc., to improve purification capacity, ensure thorough purification, The effect of reducing operating costs

Inactive Publication Date: 2008-10-01
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Description
  • Claims
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Problems solved by technology

These pollutants will damage the atmospheric environment and cause harm to the human body, so the flue gas after incineration must be purified
The flue gas purification system used in the national patent "incineration treatment system for hazardous waste in industrial areas" (patent number: 02235414.X) is composed of a water scrubber tower and a bag filter. Patent No.: 200420050509.9) The flue gas purification system used is composed of a spray tower, a bag filter and a secondary bag filter. Although these flue gas purification systems can effectively remove pollutants such as acid gases, the moisture in the flue gas It cannot be effectively remove...

Method used

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  • Novel wastes incineration flue gas purification system and process thereof
  • Novel wastes incineration flue gas purification system and process thereof

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] refer to figure 1 , the system is mainly composed of a semi-dry scrubber 1, a circulating fluidized bed 4, a bag filter 7 and a fan 10.

[0021] refer to figure 1 , figure 2 , the flue gas enters from the flue gas inlet 2 at the top of the semi-dry scrubber 1, and the slaked lime slurry is sprayed into the semi-dry scrubber 1 from the bottom of the tower upwards or downwards from the top of the tower, and is simultaneously sprayed by the internal high-efficiency atomizer Atomization makes it fully contact with high-temperature flue gas and produces neutralization effect, removes acid gas in flue gas, and rapidly cools flue gas. The flue gas temperature can be lowered below 200°C to prevent the regeneration of dioxins.

[0022] The flue gas enters the circulating fluidized bed 4 after coming out of the semi-dry scrubber 1, ...

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Abstract

The invention belongs to the waste gas handling technical field, particularly a novel waste burning gas cleaning system and the cleaning technology, wherein the system includes a dump dry type gas washing tower, a circulating fluid bed, a bag dust collector and a fan, and the cleaning technology is: the gas enters the dump dry type gas washing tower through the gas entry, which removes the sour gas in the gas; the cleaned gas enters the circulating fluid bed through the tower gas outlet, which removes the water and the residue sour gas, and enters the bag dust collector through the gas outlet of the circulating fluid bed; the bag dust collector filters the fine dust particles, the neutralizer particles, the deacidification reaction product particles and the active carbon particles in the gas, the cleaned gas is discharged into the air through the fan and the chimney. The system and the technology of the invention can greatly advance the cleaning capacity to the gas with wide accommodation limit and regulating range, low cost.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a novel waste incineration flue gas purification system and purification process. Background technique [0002] At present, wastes containing more combustible components are usually reduced and harmlessly treated by incineration, and conventional incineration systems often produce new pollutants, such as acid gas (SO 2 , NO, etc.), dioxins, etc. These pollutants will damage the atmospheric environment and cause harm to the human body, so the flue gas after incineration must be purified. The flue gas purification system used in the national patent "incineration treatment system for hazardous waste in industrial areas" (patent number: 02235414.X) is composed of a water scrubber tower and a bag filter. Patent No.: 200420050509.9) The flue gas purification system used is composed of a spray tower, a bag filter and a secondary bag filter. Although these flue ...

Claims

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Application Information

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IPC IPC(8): F23J15/00F23G7/00B01D53/75B01D50/00
Inventor 董长青杨勇平张俊姣何磊
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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