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Device for recovering flue gas waste heat and cooperatively eliminating wet smoke plume

A flue gas waste heat and absorption device technology, which is applied in combination devices, separation devices, heat exchangers, etc., can solve the problems of colored plumes that only have no income from investment, cannot make deep use of a large amount of latent heat, and waste energy and water resources. The effect of eliminating colored plumes, reducing costs and energy consumption, and reducing operating expenses

Pending Publication Date: 2019-04-05
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is that the existing technical route for recovering flue gas waste heat cannot make deep use of the sensible heat of the original flue gas and the large amount of latent heat of water vapor in the cleaned flue gas, and at the same time energy and water resources are wasted and the investment cost is high , to eliminate the defect that the colored plume has only investment but no return, and thus a device for recovering the waste heat of the flue gas and synergistically eliminating the wet plume is proposed

Method used

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  • Device for recovering flue gas waste heat and cooperatively eliminating wet smoke plume
  • Device for recovering flue gas waste heat and cooperatively eliminating wet smoke plume
  • Device for recovering flue gas waste heat and cooperatively eliminating wet smoke plume

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Embodiment 1

[0041] This embodiment provides a device for recovering waste heat of flue gas and synergistically eliminating wet plume, such as figure 1 As shown, it includes a dedusting device 1, a desulfurization device 2 and an absorption device 3 connected in sequence. For example, the dedusting device 1 can be an electric precipitator, and the desulfurization device 2 can be a desulfurization tower, such as image 3 As shown, it also includes a regeneration device 11, including a housing, a dilute solution inlet 11-1 and a steam outlet 11-5 arranged at the upper part of the housing, a concentrated solution outlet 11-2 arranged at the lower part of the housing, and several Solution channels and heat exchange channels; in this embodiment, the absorption device 3 includes a housing and a first spray unit 3-1, the first spray unit 3-1 is arranged in the middle and upper part of the absorption device 3, and the second A spray unit 3-1, the first heat exchanger 5, the first pump 4, and the l...

Embodiment 2

[0046] This embodiment provides a device for recovering flue gas waste heat and synergistically eliminating wet plume. On the basis of the above-mentioned embodiment 1, in order to improve the heat exchange effect, the sensible heat in the original flue gas is fully recovered, and the waste liquid is fully regenerated , also includes a liquid distributor 11-4, including a number of guide tubes and a number of nozzles arranged at intervals along the length of the guide tube, the guide tube is arranged in the housing, and is located above the solution channel, and the nozzles face the solution channel , to spray a dilute solution into it, and the dilute solution then flows into the solution channel, forming a liquid film with a certain thickness on its inner wall and exchanging heat with the steam partition wall; specifically, the guide tube is composed of a main guide tube and several branch guide tubes Composition, the main flow pipe is connected with the dilute solution inlet ...

Embodiment 3

[0048] This embodiment provides a device for recovering flue gas waste heat and synergistically eliminating wet plume. On the basis of the above-mentioned embodiment 1 or 2, it also includes a steam inlet and a condensate outlet 11-3, which are relatively arranged on the side wall of the housing , and are all communicated with the heat exchange channel, the steam inlet is communicated with the steam outlet 11-5, so that the steam from the steam outlet 11-5 enters the heat exchange channel from the steam inlet and indirectly exchanges heat with the dilute solution in the solution channel, and then The steam is condensed into condensate and discharged from the condensate outlet;

[0049] In order to facilitate the rapid collection of steam and absorption liquid, as shown in 3, the top of the shell is a conical top, and along the direction from the bottom of the shell to the top, the inner diameter of the conical top gradually becomes smaller, and the steam outlet 11-5 is set Con...

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Abstract

The invention discloses a device for recovering flue gas waste heat and cooperatively eliminating wet smoke plume. The water content of clean flue gas is greatly reduced by the aid of an absorption device, steam releases latent heat owing to phase change when being absorbed by absorption liquid, the dryness and the temperature of the clean flue gas can be improved, colored smoke plume can be eliminated, deep water extraction can be performed, the dust content of the clean flue gas can be reduced, and low-quality latent heat of water vapor in the clean flue gas can be recovered. The absorptionliquid absorbing the water vapor in the absorption device is changed into dilute solution, the dilute solution is conveyed into a regenerating device, exchanges heat with saturated steam generated bythe regenerating device and is regenerated into concentrated solution, the concentrated solution is conveyed into the absorption device, the saturated steam generated after compression of secondary steam at the top of the regenerating device in the regeneration process, the saturated steam releasing the latent heat is changed into condensed water, cost and energy consumption are reduced, and the device has excellent social and economic impact.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a device for recovering waste heat of flue gas and synergistically eliminating wet plume. Background technique [0002] With the development of my country's economy, in order to actively respond to the "Shanghai Coal-fired Power Plant Gypsum Rain and Colored Plume Test Technical Requirements (Trial)", Zhejiang "Coal-fired Power Plant Air Pollutant Emission Standards" (draft for proposals), Tianjin "Notice on Further Strengthening the In-depth Control of Air Pollution in Key Industries such as Thermal Power and Iron and Steel in Our City" and the regulations for eliminating colored plumes in Tangshan, Zhangjiakou, Handan and other places in Hebei. Various technical routes for recovering flue gas waste heat have been developed. The common technical route is to arrange flue gas condensers, spray towers or add slurry coolers on the slurry circulation slurr...

Claims

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Application Information

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IPC IPC(8): B01D53/26B01D53/18B01D50/00B01D47/06B01D47/02B01D47/00F23J15/04F23J15/06F23J15/08F28D21/00
CPCB01D47/00B01D47/02B01D47/06B01D50/00B01D53/1425B01D53/18B01D53/263F23J15/04F23J15/06F23J15/08F28D21/0007F23J2219/70F23J2215/20F23J2215/10B01D2247/04B01D2247/10Y02E20/30Y02P70/10
Inventor 王争荣汪洋
Owner CHINA HUADIAN ENG
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