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Cooling wet-desulphurization smoke demisting device

A technology of wet desulfurization and demisting device, which is applied in the direction of combination device, separation method, steam condensation, etc. It can solve the problems that the wet desulfurization flue gas demisting cannot be completely completed, and the blockage of the demister can not be solved, so as to avoid blockage , Strengthen the effect of capture

Inactive Publication Date: 2016-10-12
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to enhance the defogging effect of the mist eliminator, generally by calculating the flue gas flow rate, select the appropriate layout of the mist eliminator, and optimize the arrangement of the mist eliminator, such as appropriately increasing the distance between the bottom of the mist eliminator and the highest spray layer , improve the uniformity of the flow field in the demister, reduce the local flow velocity exceeding the limit, can enhance the demister effect of the demister, reduce the carrying of slurry, and alleviate the phenomenon of "gypsum rain". However, the existing technology cannot completely complete the wet Demisting of desulfurized flue gas by desulfurization method, and can not solve the problem of clogging of demister during use

Method used

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  • Cooling wet-desulphurization smoke demisting device
  • Cooling wet-desulphurization smoke demisting device
  • Cooling wet-desulphurization smoke demisting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] refer to figure 2 , the cooling demister 4 is a cooling flat plate demister, and the number of flushing devices 6 arranged above and below the cooling demister 4 on each layer is one; the flue gas passes through the flue gas inlet 2 of the wet desulfurization tower 1 After entering the wet desulfurization tower 1 and passing through the spray layer 3, small droplets of desulfurization slurry will be entrained in the flue gas, and then the flue gas passes through two layers of cooling flat plate demisters, cooling flat plate demisters and cooling water pipes The road 5 is connected, the cooling water pipe 5 is passed into the cooling water, and the cooling water enters the blades of the cooling flat plate demister, the temperature of the cooling water is lower than the temperature of the flue gas, and the cooling flat plate demister plays a cooling role , so that the temperature of the cooling flat plate demister is lower than the temperature of the flue gas. When the f...

Embodiment 2

[0025] Such as image 3 As shown, the cooling type demister 4 is a roof type demister, wherein the number of flushing devices 6 arranged above and below each layer of the cooling type demister 4 is two, and the roof type demister and the cooling water pipeline 5-phase connection, the cooling water pipeline 5 is fed with cooling water, and the cooling water enters the blades of the roof-type mist eliminator. The temperature of the roof-type demister is lower than the temperature of the flue gas. When the flue gas passes through the roof-type demister, the temperature drops, and part of the water vapor condenses on the small droplets, which makes the small droplets absorb moisture and grow up. Under the action, it hits the roof-type mist eliminator, and at the same time, the small droplets are also affected by the thermophoretic force of the low-temperature object on the higher-temperature droplets, and are more likely to be captured by the roof-type mist eliminator. The flushi...

Embodiment 3

[0027] Such as Figure 4 As shown, the cooling type demister 4 includes a roof type demister and some column pipes 7, and each column tube 7 is positioned under the cooling type roof type demister, and the cooling water pipeline 5 is connected with the cooling type roof type demister and each The column pipes 7 are connected, wherein, the number of flushing devices 6 arranged above and below the cooling type demister 4 of each layer is 2, the roof type demister and the column pipe 7 are connected with the cooling water pipeline 5, and the cooling water pipe The cooling water is passed into the road 5, and the cooling water enters the roof type demister and the column tube 7, the temperature of the cooling water is lower than the temperature of the flue gas, and the cooling water plays a cooling role on the roof type demister and the column tube 7, The temperature of the ridge type demister and the column tube 7 is lower than the temperature of the flue gas. When the flue gas p...

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Abstract

The invention discloses a cooling wet-desulphurization smoke demisting device. The cooling wet-desulphurization smoke demisting device comprises a cooling water pipe, a plurality of washing devices and a plurality of layers of cooling demisting device bodies, wherein the layers of cooling demisting device bodies are sequentially distributed from top to bottom, the washing devices are located above and below the layers of cooling demisting device bodies, and the cooling water pipe is connected with the cooling demisting device bodies. By means of the cooling wet-desulphurization smoke demisting device, efficient demisting of wet-desulphurization smoke can be achieved, and blocking of the demisting device bodies can be avoided.

Description

technical field [0001] The invention belongs to the technical field of wet desulfurization, and relates to a cooling type wet desulfurization flue gas demisting device. Background technique [0002] Among various wet desulfurization processes, there is a type of wet desulfurization tower-type spray absorption tower. The main working principle of the spray absorption tower is to use several circulating pumps to transport the desulfurization slurry to the spray layer in the middle and upper part of the desulfurization tower. The spray layer is generally arranged in several layers, and each layer is arranged with several nozzles. The desulfurization slurry is passed through After the atomization of the nozzle is sprayed out, an atomized slurry spray area is formed. When the flue gas passes through the spray area, the flue gas contacts the slurry, and the SO in the flue gas 2 The gas is absorbed by the desulfurization slurry to absorb SO 2 After waiting for the gas, the slurr...

Claims

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Application Information

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IPC IPC(8): B01D5/00B01D50/00B01D53/80B01D53/50
CPCB01D5/0009B01D53/504B01D53/80B01D2251/404B01D50/40
Inventor 张纯张磊吴帅帅
Owner XIAN THERMAL POWER RES INST CO LTD
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