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Device and method for removing acid gases in garbage incineration smoke at high temperature

A waste incineration, acid gas technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as pipeline corrosion, pipeline blockage, etc., to reduce corrosion and blockage, reduce pressure drop, and high removal efficiency. Effect

Active Publication Date: 2012-10-10
SOUTHEAST UNIV
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  • Description
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Problems solved by technology

[0005] The object of the present invention is to provide a high-temperature removal method for waste incineration flue gas for the corrosion of pipelines by acid gases and the blockage of pipelines caused by the presence of acid gases, especially the problems that HCl promotes the formation of PCDD / PCDF at medium and high temperatures. acid gas installation

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  • Device and method for removing acid gases in garbage incineration smoke at high temperature
  • Device and method for removing acid gases in garbage incineration smoke at high temperature
  • Device and method for removing acid gases in garbage incineration smoke at high temperature

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0036] like figure 1As shown, first, CaO with an average particle size of 10mm is selected as the solid adsorbent, and fresh CaO enters the closed distribution hopper 1 from the supply bin 22, and then passes through the primary hopper 2, the secondary hopper 3, and the tertiary hopper respectively. 4 into the first-stage cross-flow moving bed reactor 5, the second-stage cross-flow moving-bed reactor 6 and the third-stage cross-flow moving-bed reactor 7. The bed depth of the selected first-stage cross-flow moving bed reactor is 1m, the second-stage reactor is 1.25m, the third-stage reactor is 1.5m, and the height and width of the three reactors are both 3m. The widths of the outlets of the bottom feeding section of the multistage cross-flow moving bed reactor are 400mm, 320mm, and 240mm respectively, and the unloading speeds are respectively select...

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Abstract

The invention discloses a device for removing acid gases in garbage incineration smoke at the high temperature. The device comprises a material separation hopper, a primary feed hopper, a secondary feed hopper, a tertiary feed hopper, a primary cross flow moving bed reactor, a secondary cross flow moving bed reactor, a tertiary cross flow moving bed reactor, a primary adjustable star discharge device, a secondary adjustable star discharge device, a tertiary adjustable star discharge device, a smoke inlet, a smoke outlet, a recovery bin, a drier, an implementing bin, a fresh material implementing bin, a garbage incineration smoke pipeline and an air preheater. The invention further discloses a method for removing the acid gases in the garbage incineration smoke at the high temperature. According to the invention, multiple stages of cross flow moving bed reactors are adopted, the garbage incineration smokes at moderate and high temperatures sequentially pass through the cross flow moving bed reactors and are in contact with adsorbents in the reactors to perform multi-stage deep acid gas removal, reduce corrosion and blockage by the acid gases on pipelines and equipment, and achieve the exhaust of the garbage incineration smoke in a purifying way.

Description

technical field [0001] The invention relates to a device and method for deep removal of acid gas generated in the garbage incineration process under medium and high temperature conditions, and belongs to the technical field of urban domestic garbage incineration treatment. Background technique [0002] With the acceleration of urbanization and the modernization of material consumption, the production of urban domestic waste has increased sharply, and the harmless treatment of waste is imminent. The incineration method can maximize the reduction, harmlessness, and resource utilization of municipal solid waste, and the heat generated by it can be used to generate electricity. However, waste incineration will produce many harmful substances, especially acid gases (mainly HCl, SO 2 ), if it is not effectively purified, then with the increasing promotion of waste incineration in our country, it will definitely cause serious pollution to the environment. [0003] At the same tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/08
Inventor 金保昇曹俊钟文琪王恺仲兆平黄亚继陶敏
Owner SOUTHEAST UNIV
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