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Method and equipment for purifying tail gas generated by burnning garbage

A technology of waste incineration and tail gas, which is applied in chemical instruments and methods, combined devices, separation methods, etc., can solve the problems of large floor space, high investment and operating costs, inability to effectively remove fine dioxin particles, etc. Small area, low cost and stable operation

Active Publication Date: 2006-07-05
TSINGHUA UNIV +1
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Although the above method can remove the acid gas and fly ash in the tail gas, it has the problems of high equipment investment and operation cost, large floor area, and inability to effectively remove fine dioxin particles produced by waste incineration.

Method used

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  • Method and equipment for purifying tail gas generated by burnning garbage

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Embodiment Construction

[0024] Referring to the accompanying drawings, the device of the present invention includes a cooling tower 2 and a bag filter 8 . The flue gas inlet 1 of the cooling tower 2 is placed on the top of the cooling tower 2, and the cooling tower 2 is provided with two groups of water spray nozzles 3 opposite to the flow of the flue gas. connection Type flue 4. The bottom section of the type flue 4 is provided with a lime powder inlet 5, The middle section of the type flue 4 is provided with an iron fly ash inlet 6, The upper section of the type flue 4 is provided with an activated carbon inlet 7. A filter material layer 9 using film-coated filter material is placed in the bag filter 8 , and a purified gas outlet 10 is placed above the side of the bag filter 8 .

[0025] During device operation of the present invention, its step is:

[0026] 1) The flue gas discharged from the waste incinerator enters the cooling tower 2 from the flue gas inlet 1 at the upper end of the co...

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Abstract

A device of purifying waste gas of garbage ¿C burning is prepared as setting smoke inlet at top end of cooling tower; setting water spraying nozzle opposite to flowing direction of smoke; setting S form flue pipe between cooling tower bottom and top of bag ¿C type collector; setting lime powder inlet at bottom section of said flue pipe, iron fly ash inlet at middle section of said flue pipe and activated carbon inlet at top section of said flue pipe; setting filter material layer in bag ¿C type collector and setting purified gas outlet at top side of bag ¿C type collector.

Description

technical field [0001] The invention relates to the technical field of combustion boiler tail gas purification and dust removal, in particular to a method and a device for deacidifying waste incineration tail gas, removing adsorbents such as inhalable particles and dioxins, and the like. Background technique [0002] Air pollution has always been the focus of environmental protection work in many countries in the world, and more than 200 flue gas desulfurization technologies have been developed successively by various countries. However, there are only a dozen kinds that can be applied industrially. For the tail gas produced by waste incineration, in addition to conventional coal-fired flue gas pollutants such as nitrogen oxides, sulfur oxides, fine particles and heavy metals, it also contains a larger amount of harmful substances such as elemental chlorine, hydrogen chloride, and dioxins. Desulfurization and dust removal technology cannot meet the strict purification requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/00B01D50/00B01D53/04B01D53/78
Inventor 赵旭东姚强项光明韩毅
Owner TSINGHUA UNIV
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