CN206121505U - Flue gas desulphurization device of zinc smelting power plant for self -supply - Google Patents
Flue gas desulphurization device of zinc smelting power plant for self -supply Download PDFInfo
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- CN206121505U CN206121505U CN201621160056.4U CN201621160056U CN206121505U CN 206121505 U CN206121505 U CN 206121505U CN 201621160056 U CN201621160056 U CN 201621160056U CN 206121505 U CN206121505 U CN 206121505U
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Abstract
The utility model discloses a flue gas desulphurization device of zinc smelting power plant for self -supply, including technology water tank, filtering tank and underground tank, the technology water tank passes through the pipeline to be connected with the scrubbing tower, and the technology water tank is connected with the desulfurizing tower through washing the pipeline, the scrubbing tower passes through the pipeline to be connected with the desulfurizing tower, and scrubbing tower and desulfurizing tower self all be equipped with circulation pipeline, the scrubbing tower passes through the pipeline and is connected with the degassing tower, filtering tank and underground tank all are connected through pipeline and desulfurizing tower. This flue gas desulphurization device of zinc smelting power plant for self -supply, the small investment, the supply of zinc oxide desulfurizer and the processing of desulfurization result can combine with copper zinc smelting's production technology, the working costs is low, does the absorbent adopt copper zinc smelting intermediate zinc oxide smoke and dust, desulfurization result can turn into the by -product and use multipurposely, after using multipurposely, the desulfurization result does not produce secondary pollution.
Description
Technical field
This utility model belongs to flue gas desulfurization technique field, and in particular to a kind of zinc abstraction power plant for self-supply flue gas desulfurization dress
Put.
Background technology
Pollute to prevent and treat thermal power plant's Air Pollutant Emission, promote technological progress and the sustainable development in thermal power plant
Exhibition, on July 29th, 2011 are issued, what on January 1st, 2012 implemented《Fossil-fuel power plant atmospheric pollutant emission standard》(GB13223-
2011) specify：From 1 day January in 2012, newly-built thermal power generation boiler and gas turbine group sulfur dioxide emissioning concentration must be controlled
System is in 100mg/m3Hereinafter, therefore the qualified discharge of tail gas becomes the most important thing in thermal power plant.It is strict to tackle this
Environmental regulation, most of power plant select to arrange tail gas desulphurizing system, and current desulfurization method of limestone-gypsum technique is to apply in the world
There is operation and maintenance cost height and easily cause secondary pollution problems in a kind of most widely desulfurization technology, but the method.
Utility model content
The purpose of this utility model is to provide a kind of zinc abstraction power plant for self-supply flue gas desulfurization device, to solve above-mentioned background
The problem proposed in technology.
For achieving the above object, this utility model provides following technical scheme：A kind of flue gas desulfurization of zinc abstraction power plant for self-supply
Device, including technique water tank, filtrate receiver and underground tank, the technique water tank are connected with scrubbing tower by pipeline, and technique water tank
It is connected with desulfurizing tower by flushing line, the scrubbing tower is connected with desulfurizing tower by pipeline, and scrubbing tower and desulfurizing tower itself
Be equipped with circulation line, the scrubbing tower is connected with degassing tower by pipeline, the filtrate receiver and underground tank by pipeline with
Desulfurizing tower connects.
Preferably, spray system is provided with the top of the scrubbing tower, the spray system is by spray head, water tank and circulating pump
Composition.
Preferably, demister is provided with the top of the scrubbing tower and desulfurizing tower, the demister is provided with on-line automatic flushing and is
System.
Technique effect of the present utility model and advantage：The zinc abstraction power plant for self-supply flue gas desulfurization device, small investment, Zinc Oxide
The supply of desulfurizing agent and the process of desulfurization product can be combined with the production technology of copper zinc abstraction；Operating cost is low, absorbent
Using copper zinc abstraction intermediate product -- zinc oxide fumes, desulfurization product can be converted into side-product comprehensive utilization；Desulfurization product synthesis
Secondary pollution is not produced after utilization.
Description of the drawings
Fig. 1 is process principle figure of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
This utility model provides a kind of zinc abstraction power plant for self-supply flue gas desulfurization device as shown in Figure 1, including fresh water (FW)
Case, filtrate receiver and underground tank, the technique water tank are connected with scrubbing tower by pipeline, and technique water tank passes through flushing line and takes off
Sulfur tower connects, and the scrubbing tower is connected with desulfurizing tower by pipeline, and scrubbing tower and desulfurizing tower itself are equipped with circulation line, institute
State scrubbing tower to be connected with degassing tower by pipeline, the filtrate receiver and underground tank are connected with desulfurizing tower by pipeline, described to wash
Wash, the spray system is made up of spray head, water tank and circulating pump, the scrubbing tower and desulfurization
Top of tower is provided with demister, and the demister is provided with on-line automatic rinse-system.
Workflow and principle are as follows：
Zinc oxide desulfuration technology system mainly includes：Flue gas washing system, sulfur dioxide absorption system, mist eliminator flushing system
System etc..
(1) flue gas washing system
Flue gas after gathering dust is initially entered in the middle part of scrubbing tower, reaches purification with the cleaning mixture counter current contacting sprayed from top of tower
Purpose；Flue gas after washing enters subsequent absorption system；Flue gas washing system is provided with three circulating pumps, the liquid of the outer row of washing
Outer row's punching ash after degassed tower, the degassed tower of the gas being dissolved in water drain into acid making system.
(2) sulfur dioxide absorption system
Flue gas after scrubbed enters the SO2 gases in desulfurizing tower in removing flue gas；Smoke absorption system mainly includes two
The equipment such as sulfur oxide absorption tower, circulating pump, serosity efflux pump, agitator；After flue gas enters absorption tower, 90 ° are folded to and flow upward,
Big liquid-gas ratio contact is carried out with the serosity under spraying layer, the SO2 in flue gas is absorbed slurry wash, and with serosity in
There is chemical reaction in ZnO, complete flue gas desulfurization.The SO2 of absorption is in the form of ZnSO32.5H2O.
Absorption process dominant response is：
ZnO+SO2+2.5H2O=ZnSO32.5H2O
Meanwhile, carry out following side reaction
ZnO+2SO2+H2O=Zn (HSO3) 2
ZnSO3+SO2+H2O=Zn (HSO3) 2
Zn (HSO3) 2+ZnO+4H2O=ZnSO32.5H2O
System arranges a certain amount of zinc sulfite serosity to the fresh Zinc Oxide serosity of continuous supplementation in absorption tower is simultaneously continuously outer,
The zinc sulfite serosity of outer row enters wet zinc-making system Jing after filter pressing；Neat stress after desulfurization dedusting is removed by demister
Jing tail gas funnels discharge after the droplet carried secretly in air-flow；Demister is provided with on-line automatic rinse-system, and mist eliminator flushing water is by rushing
Wash water pump is supplied；Absorption tower serosity and demister rinse water are flowed into and absorb tower bottom, i.e. slurry pool of absorption tower.Starched by absorption tower
Side-feeding mixer stirring on liquid pool, makes the solid particle holding suspended state in slurry pool.
Fresh Zinc Oxide serosity sends into sulfur dioxide absorbing tower from Zinc Oxide slurry supply pump, for removing the dioxy in flue gas
Change sulfur, supplementary ZnO serosity amount is controlled by pH value in absorption tower.
Simultaneously for the ease of system overhaul, desulfurization zone melt pit and sump pump are provided with, when overhauling for collecting device, pipeline etc.
The serosity of emptying；Desulfurization zone melt pit liquid level is higher than certain value, serosity is squeezed in absorption tower with sump pump.
(3) mist eliminator flushing system
In order to remove the droplet carried secretly in washing and flue gas after desulfurization, demister is provided with the top of scrubbing tower and desulfurizing tower,
Demister is provided with on-line automatic rinse-system；Scrubbing tower mist eliminator flushing is taken off using fresh water (FW) or power plant chemistry water concentrated water in factory
Sulfur tower mist eliminator flushing is using fresh water (FW) or zinc sulfite filtrate in factory.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, this is not limited to
Utility model, although being described in detail to this utility model with reference to the foregoing embodiments, for those skilled in the art
For, which still can be modified to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Equivalent is carried out, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc.,
Should be included within protection domain of the present utility model.
Claims (3)
1. a kind of zinc abstraction power plant for self-supply flue gas desulfurization device, including technique water tank, filtrate receiver and underground tank, it is characterised in that：
The technique water tank is connected with scrubbing tower by pipeline, and technique water tank is connected with desulfurizing tower by flushing line, the washing
Tower is connected with desulfurizing tower by pipeline, and scrubbing tower and desulfurizing tower itself are equipped with circulation line, and the scrubbing tower passes through pipeline
It is connected with degassing tower, the filtrate receiver and underground tank are connected with desulfurizing tower by pipeline.
2. a kind of zinc abstraction power plant for self-supply flue gas desulfurization device according to claim 1, it is characterised in that：The scrubbing tower
Top be provided with spray system, the spray system is made up of spray head, water tank and circulating pump.
3. a kind of zinc abstraction power plant for self-supply flue gas desulfurization device according to claim 1, it is characterised in that：The scrubbing tower
With demister is provided with the top of desulfurizing tower, the demister is provided with on-line automatic rinse-system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621160056.4U CN206121505U (en) | 2016-11-01 | 2016-11-01 | Flue gas desulphurization device of zinc smelting power plant for self -supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621160056.4U CN206121505U (en) | 2016-11-01 | 2016-11-01 | Flue gas desulphurization device of zinc smelting power plant for self -supply |
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| Publication Number | Publication Date |
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| CN206121505U true CN206121505U (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621160056.4U Active CN206121505U (en) | 2016-11-01 | 2016-11-01 | Flue gas desulphurization device of zinc smelting power plant for self -supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935022A (en) * | 2017-12-08 | 2018-04-20 | 南丹县南方有色金属有限责任公司 | A kind of zinc oxide desulfurization washing system |
| CN110433620A (en) * | 2019-08-21 | 2019-11-12 | 葫芦岛锌业股份有限公司 | A kind of method that zinc abstraction high temperature boiling dirt desulfurization utilizes |
-
2016
- 2016-11-01 CN CN201621160056.4U patent/CN206121505U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935022A (en) * | 2017-12-08 | 2018-04-20 | 南丹县南方有色金属有限责任公司 | A kind of zinc oxide desulfurization washing system |
| CN110433620A (en) * | 2019-08-21 | 2019-11-12 | 葫芦岛锌业股份有限公司 | A kind of method that zinc abstraction high temperature boiling dirt desulfurization utilizes |
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