Device for recovering smoke waste heat and dedusting and eliminating colored smoke plume

A flue gas waste heat and dust removal device technology, which is applied in the field of environmental protection, can solve the problems of colored plume that only invests but has no profit, cannot make deep use of a large amount of latent heat, waste energy and water resources, etc., to achieve the elimination of colored plume, lower temperature, reduce The effect of running costs

Pending Publication Date: 2018-08-21
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 income, thus a device for recovering the waste heat of the flue gas and cooperating with dust removal to eliminate the colored plume is proposed

Method used

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  • Device for recovering smoke waste heat and dedusting and eliminating colored smoke plume
  • Device for recovering smoke waste heat and dedusting and eliminating colored smoke plume
  • Device for recovering smoke waste heat and dedusting and eliminating colored smoke plume

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Embodiment 1

[0044] This embodiment provides a device for recovering waste heat of flue gas and cooperating with dust removal to eliminate colored plumes, such as figure 1 As shown, it includes a dust removal device 1, a desulfurization device 3 and an absorption device 4 connected in sequence. For example, the dust removal device 1 can be an electric precipitator, and the desulfurization device 3 can be a desulfurization tower. It also includes a regeneration device 2, which is arranged between the dust removal device 1 and the Between the desulfurization devices 3; in the present embodiment, the absorption device 4 includes a second housing and a spraying device 4-3, and the spraying device 4-3 is arranged in it near the middle and upper part of the second housing, and spraying One end of the device 4-3 communicates with the outlet of the absorption liquid, and a second nozzle is arranged at the opposite end to spray the absorption liquid (i.e. thick absorption liquid) to the middle and l...

Embodiment 2

[0052] This embodiment provides a device for recovering waste heat of flue gas and synergistically removing dust to eliminate colored plume. Regeneration also includes a liquid distributor, including several guide tubes 2-6 and several first nozzles 2-7 arranged at intervals along the length direction of the guide tubes 2-6, and the guide tubes 2-6 are located in the waste liquid In the first shell 2-0 between the heat exchange channel 2-11 and the top end of the first shell 2-0, the first nozzle 2-7 faces the waste liquid heat exchange channel 2-11 to spray waste liquid into it, The waste liquid then flows into the waste liquid heat exchange channel 2-11, forming a liquid film with a certain thickness on the vertical wall and exchanging heat with the flue gas partition wall; specifically, as Figure 6 As shown, the guide pipe 2-6 is composed of a main guide pipe 2-6-1 and several branch guide pipes 2-6-2, the main guide pipe 2-6-1 communicates with the waste liquid inlet 2-1,...

Embodiment 3

[0054] This embodiment provides a device for recovering flue gas waste heat and cooperating with dust removal to eliminate colored plumes. On the basis of the above-mentioned embodiment 1 or 2, in order to facilitate the rapid collection of steam and absorption liquid, as shown in 3 and 4, the first shell The top of the body 2-0 is a conical top 2-8. Along the direction from the bottom to the top of the first shell 2-0, the inner diameter of the conical top 2-8 becomes smaller gradually, and the steam outlet 2-3 is arranged at The conical top of the conical top 2-8; the bottom of the first shell 2-0 is a conical bottom 2-9, along the direction from the top of the first shell 2-0 to the bottom, the conical bottom 2 The inner diameter of -9 gradually becomes smaller, and the absorption liquid outlet 2-2 is arranged at the conical bottom of the conical bottom end 2-9;

[0055] In order to make the waste liquid form a liquid film on the inner wall of the waste liquid heat exchange...

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Abstract

The invention discloses a device for recovering smoke waste heat and dedusting and eliminating colored smoke plume. The device is capable of greatly reducing the moisture content of purified smoke byusing an absorption device firstly, in a process that vapor is absorbed by absorption liquid, because of latent heat released by phase change, the dryness and temperature of the purified smoke are improved, and the effect of eliminating the colored smoke plume, deeply lifting water, reducing the dust content of the purified smoke and recovering the water vapor low-quality latent heat in the purified smoke can be achieved; and the absorption liquid in the absorption device turns into waste liquid after water vapor is absorbed, the waste liquid is sent to a regeneration device, regenerated to become the absorption liquid through the heat exchange with the original smoke, and conveyed to the absorption device again, the waste heat of the original smoke is used in a regeneration process, the vapor of a power plant is not used in the regeneration process, and the vapor consumption can be effectively reduced; finally, sensible heat of the original smoke and the latent heat of the purified smoke water vapor are deeply recovered and used through the above means, the fact that a lot of cold sources is used in cooling and condensing processes in the prior art is avoided, and water resourcesare greatly saved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and specifically relates to a device for recovering waste heat of flue gas and cooperative dust removal to eliminate colored plume, in particular to a device for recovering waste heat of flue gas in a thermal power plant and cooperative dust removal for eliminating colored plume or recovering flue gas in other fields A device for eliminating colored smoke plumes by coordinating waste heat with dust removal. 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 elim...

Claims

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Application Information

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IPC IPC(8): F23J15/04F23J15/06
CPCF23J15/04F23J15/06Y02E20/30
Inventor 王争荣汪洋耿宣夏怀鹏付丽辉
Owner CHINA HUADIAN ENG
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