CN204619711U - A kind of system and boiler removing various pollutants in fume - Google Patents
A kind of system and boiler removing various pollutants in fume Download PDFInfo
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- CN204619711U CN204619711U CN201420852377.5U CN201420852377U CN204619711U CN 204619711 U CN204619711 U CN 204619711U CN 201420852377 U CN201420852377 U CN 201420852377U CN 204619711 U CN204619711 U CN 204619711U
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- absorption tower
- various pollutants
- fume
- medium layer
- porous medium
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Abstract
The utility model provides a kind of system and the boiler that remove various pollutants in fume, wherein, a kind of system removing various pollutants in fume comprises: absorption tower, absorption tower is provided with gas approach and exhanst gas outlet, be provided with at least one row in absorption tower, for spraying the ozone injection apparatus of ozone towards the direction of gas approach, in absorption tower, the below of ozone injection apparatus is provided with porous medium layer; For providing the alkali lye supplementary device of alkali lye in absorption tower, alkali lye supplementary device is connected with the sidewall on the absorption tower between porous medium layer and ozone injection apparatus, wherein, when there being flue gas to enter absorption tower, alkali lye forms bubble level above porous medium layer; For removing fine grain wet scrubber, wet scrubber is connected with the exhanst gas outlet on absorption tower.The utility model simplifies the existing structure removing the device of pollutant in flue gas, reduces operating cost, and is stripped of the multiple gaseous contaminant in flue gas and the fine particle in flue gas simultaneously.
Description
Technical field
The utility model relates to filed of flue gas purification, especially relates to a kind of system and the boiler that remove various pollutants in fume.
Background technology
For removing various gaseous pollutants in smoke gas, as shown in Figure 1, provide a kind of device removing various gaseous pollutants in smoke gas in prior art, this device controls the confinement problems of Treatment process for solving multi-pollutant in flue gas.Utilize an absorption tower to remove SO2, NOx, mercuryvapour and CO2 in flue gas comprehensively, bottom, described absorption tower arranges absorption slurry pool, middle part arranges shower, top is provided with oxidant pipe, absorption tower is longitudinally provided with dividing plate, dividing plate both sides are respectively desulfurization active section and denitration active section, and top, absorption tower is the zoneofoxidation of UNICOM; Flue gas enters desulfurization active section by absorption tower import, completes removing of SO2 and HCL; Flue gas continues upwards to enter zoneofoxidation, enters denitration decarburization active section, complete removing of NOx, mercuryvapour and CO2 after zoneofoxidation NOx is oxidized to high-valence state oxide soluble in water.
But this device can not remove the fine particle in flue gas simultaneously, for existing a kind of shortcoming removing the device of various gaseous pollutants in smoke gas, the invention provides a kind of system removing various pollutants in fume.
Utility model content
In order to simplify the existing structure removing the device of pollutant in flue gas, reduce operating cost, and can remove the multiple gaseous contaminant in flue gas and the fine particle in flue gas, the utility model provides a kind of system and the boiler that remove various pollutants in fume simultaneously.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
According to an aspect of the present utility model, provide a kind of system removing various pollutants in fume, comprise: absorption tower, described absorption tower is provided with gas approach and exhanst gas outlet, be provided with at least one row, ozone injection apparatus for the injection ozone in the direction towards gas approach in described absorption tower, in described absorption tower, the below of described ozone injection apparatus is provided with porous medium layer; For providing the alkali lye supplementary device of alkali lye in described absorption tower, described alkali lye supplementary device is connected with the sidewall on the described absorption tower between described porous medium layer and described ozone injection apparatus, wherein, when there being flue gas to enter described absorption tower, described alkali lye forms bubble level above described porous medium layer; For removing fine grain wet scrubber, described wet scrubber is connected with the exhanst gas outlet on described absorption tower.
Optionally, described gas approach is positioned at the top on described absorption tower, on the sidewall on the absorption tower of described exhanst gas outlet between described ozone injection apparatus and described porous medium layer.
Optionally, described system also comprises ozone generating-device, and described ozone generating-device is connected with described ozone injection apparatus.
Optionally, the hole of described porous medium layer is consistent with the size of bubbling in described bubble level.
Optionally, preset space length is provided with between the bottom on described porous medium layer and described absorption tower.
Optionally, described system also comprises the accessory substance treating apparatus for the treatment of crystallization auxiliary product, and described accessory substance treating apparatus is connected with the bottom on described absorption tower.
Optionally, described system also comprises dust arrester, and described dust arrester is connected with the entrance of described gas approach.
Optionally, described system also comprises air-introduced machine, and described air-introduced machine is connected with described wet scrubber.
According to another aspect of the present utility model, additionally provide a kind of boiler removing various pollutants in fume, described boiler comprises boiler furnace, back-end ductwork and removes the system of various pollutants in fume, wherein, one end of described back-end ductwork is connected with described boiler furnace, and the other end of described back-end ductwork is connected with the described system removing various pollutants in fume.
The beneficial effects of the utility model are:
The utility model by arranging ozone injection apparatus in absorption tower, after flue gas enters absorption tower from gas approach, ozone injection apparatus adopts and sprays ozone in the opposite direction with the main current flow of flue gas, increase the contact area of ozone and various pollutants in fume, facilitate mixing of ozone and flue gas, make the multiple pollutants such as sulfureous in flue gas oxide, nitrogen oxide and mercury vapour be substantially oxidized into high price oxidation product; The alkali lye that alkali lye supplementary device supplements in absorption tower forms bubble level above porous medium layer, and alkali lye in bubble level and multiple high oxide react, and achieves the integrated effect removed of various pollutants in fume; Porous medium layer has effectively isolated bubble level and the crystallized product such as sulfate and nitrate, improves alkali lye utilization rate, has fully effectively reclaimed valuable accessory substance.
In addition, wet scrubber is connected with the exhanst gas outlet on absorption tower, effectively can remove the multiple fine particle in flue gas further, eliminate the equipment such as demister simultaneously, simplify system, reduce and remove cost.
Accompanying drawing explanation
Fig. 1 represents a kind of structural representation removing the device of various gaseous pollutants in smoke gas of the prior art;
Fig. 2 represents a kind of structural representation removing the system of various pollutants in fume in embodiment of the present utility model.
Wherein in figure: 1, absorption tower; 2, gas approach; 3, exhanst gas outlet; 4, ozone injection apparatus; 5, porous medium layer; 6, alkali lye supplementary device; 7, bubble level; 8, wet scrubber; 9, ozone generating-device; 10, accessory substance treating apparatus; 11, dust arrester; 12, boiler furnace; 13, back-end ductwork.
Detailed description of the invention
Below with reference to accompanying drawings exemplary embodiment disclosed in the utility model is described in more detail.Although show exemplary embodiment disclosed in the utility model in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
A kind of system removing various pollutants in fume that the utility model provides comprises absorption tower, dust arrester and wet scrubber, utilize this system can remove multiple fine particle in the multiple gaseous contaminants such as flue dust, oxysulfide, nitrogen oxide and mercury vapour in flue gas and flue gas simultaneously, set forth below in conjunction with specific embodiment.
As shown in Figure 2, the top on absorption tower 1 is provided with gas approach 2, and flue gas flows in absorption tower 1 by gas approach 2; The middle part on absorption tower 1 is provided with ozone injection apparatus 4, ozone injection apparatus 4 can be the ozone playpipe of at least one row, formation high oxide is fully reacted in order to make the multiple pollutant in ozone and flue gas, the injection direction of ozone playpipe is relative with gas approach 2, and the ozone contrainjection namely in ozone playpipe is in the flue gas flowing into absorption tower 1 from gas approach 2; In absorption tower 1, the below of ozone injection apparatus 1 is provided with porous medium layer 5, and porous medium layer 5 has loose structure and alkali resistant corrosion, and porous medium layer 5 can be ceramic honey comb; The sidewall on the absorption tower 1 between ozone injection apparatus 4 and porous medium layer 5 is communicated with alkali lye supplementary device 6, and the alkali lye in alkali lye supplementary device 6 can be the alkaline solution such as NaOH or calcium hydroxide; When there being flue gas to flow into absorption tower 1, alkali lye supplementary device 6 supplements alkali lye in absorption tower 1, and alkali lye forms bubble level 7 above porous medium layer 5, and bubble level 7 can react with the multiple high oxide in flue gas, generates the accessory substances such as sulfate and nitrate.Supplement in absorption tower 1 in the process of alkali lye at alkali lye supplementary device 6, the flow velocity that alkali lye supplementary device 6 supplements alkali lye can be controlled, make the size of bubbling in most bubble level 7 consistent with the hole of porous medium layer 5, now, porous medium layer 5 effectively can isolate the accessory substances such as bubble level 7 and sulfate and nitrate; Can be provided with certain spacing between the bottom on porous medium layer 5 and absorption tower 1, this spacing can make accessory substance can not overflow porous medium layer 5, thus mixes mutually with bubble level 7; The sidewall on the absorption tower 1 between ozone injection apparatus 4 and porous medium layer 5 is connected with exhanst gas outlet 3, and the flue gas after ozone injection apparatus 4 and bubble level 7 flows out from exhanst gas outlet 3.
Continue see Fig. 2, the system originally removing various pollutants in fume also comprises wet scrubber 8, and wet scrubber 8 is connected with the exhanst gas outlet 3 on absorption tower 1, and wet scrubber 8 can remove the multiple fine particle in flue gas; Native system also comprises air-introduced machine, and air-introduced machine is connected with wet scrubber 8, and the flue gas after purifying with wet scrubber 8 through absorption tower 1 can enter chimney by air-introduced machine and enter in air.
Continue see Fig. 2, originally the system removing various pollutants in fume also comprises ozone generating-device 9, ozone generating-device 9 is connected with the ozone injection apparatus 4 in absorption tower 1 by pipeline, and ozone generating-device 9 can at any time to supplemental ozone in ozone injection apparatus 4.
Continue see Fig. 2, originally the system removing various pollutants in fume also comprises the accessory substance treating apparatus 10 for the treatment of crystallization auxiliary product, accessory substance treating apparatus 10 is connected with the bottom on absorption tower 1, and the multiple high oxide in bubble level 7 with flue gas reacts the crystallization auxiliary products such as the sulfate and nitrate generated and can be reclaimed by accessory substance treating apparatus 10.
Continue see Fig. 2, originally the system removing various pollutants in fume also comprises dust arrester 11, dust arrester 11 is connected with the entrance of the gas approach 2 on absorption tower 1, and flue gas flows into absorption tower 1 by gas approach 2 after dust arrester 11, and dust arrester 11 can remove the flue dust in flue gas.
Introduction originally removes the course of work of the system of various pollutants in fume in detail below:
First stage:
Containing flue dust, sulfur dioxide, nitric oxide, nitrogen dioxide, mercury vapour and the multiple flue gas in multiple pollutants such as acid fine particles first through dust arrester 11, the flue dust in flue gas removes by dust arrester 11.Then, remove the flue gas after flue dust and flow into absorption tower 1 by gas approach 2.Ozone contrainjection in absorption tower 1 in ozone injection apparatus 4 is in flue gas, under the effect of contrainjection, ozone and flue gas fully mix, now, the multiple pollutants such as the sulfur dioxide in flue gas, nitric oxide, nitrogen dioxide and mercury vapour are oxidized to high oxide by ozone, in the process, the main oxidation mechanism of ozone is as follows:
NO+O
3＝NO
2+O
2；
NO
2+O
3＝NO
3+O
2；
NO
2+NO
3＝N
2O
5；
SO
2+O
3＝SO
3+O
2；
Hg+O
3＝HgO+O
2；
Hg+NO
3＝HgO+NO
2。
In this stage, preferably, remove the flue gas after flue dust and can flow into absorption tower 1 the low temperature stage of 110 DEG C ~ 150 DEG C.In addition, in order to make ozone and nitrogen oxide fully react, the molar ratio of the ozone that ozone injection apparatus sprays and nitrogen oxide can be 0.5 ~ 2.0.
Second stage:
Alkali lye supplementary device 6 supplements alkali lye in absorption tower 1, and above porous medium layer 5, forms bubble level 7, the multiple high oxide in flue gas and the alkaline reaction in bubble level, generates the accessory substances such as sulfate and nitrate.Supplement in absorption tower 1 in the process of alkali lye at alkali lye supplementary device 6, control the flow velocity that alkali lye supplementary device 6 supplements alkali lye, make the size of bubbling in most bubble level 7 consistent with the hole of porous medium layer 5, now, the reacted nitrate of sulfur and nitrogen oxides in alkali lye and flue gas and sulfate flow into the bottom on absorption tower 1 by the hole of porous medium layer 5, and bubble level 7 stays the top of porous medium layer 5, namely porous medium layer 5 has effectively isolated the accessory substances such as bubble level 7 and sulfate and nitrate.After the accessory substance such as nitrate and sulfate flows into the bottom on absorption tower 1, by accessory substance treating apparatus 10 by the by-product recovery such as nitrate and sulfate.
Phase III:
Flue gas after absorption tower 1 purifies flows into wet scrubber 8 by the exhanst gas outlet 3 on absorption tower 1, and it is multiple in acid fine particle and other fine particle that wet scrubber 8 removes in flue gas.Remove the cleaning flue gases after fine particle by wet scrubber 8 and flow into chimney entering in air through air-introduced machine.
Continue see Fig. 1, according to another aspect of the present utility model, additionally provide a kind of boiler removing various pollutants in fume, boiler comprises boiler furnace 12, back-end ductwork 13 and removes the system of various pollutants in fume, wherein, one end of back-end ductwork 13 is connected with boiler furnace 12, and the other end of back-end ductwork 13 is connected with the system removing various pollutants in fume.
In the present embodiment, the flue gas in boiler furnace 12 flows into the system removing various pollutants in fume through back-end ductwork 13, complete the purification of flue gas and the recovery of accessory substance in the system removing various pollutants in fume.
The above is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. remove a system for various pollutants in fume, it is characterized in that, comprising:
Absorption tower, described absorption tower is provided with gas approach and exhanst gas outlet, be provided with at least one row in described absorption tower, for spraying the ozone injection apparatus of ozone towards the direction of gas approach, in described absorption tower, the below of described ozone injection apparatus is provided with porous medium layer;
For providing the alkali lye supplementary device of alkali lye in described absorption tower, described alkali lye supplementary device is connected with the sidewall on the described absorption tower between described porous medium layer and described ozone injection apparatus, wherein, when there being flue gas to enter described absorption tower, described alkali lye forms bubble level above described porous medium layer;
For removing fine grain wet scrubber, described wet scrubber is connected with the exhanst gas outlet on described absorption tower.
2. the system removing various pollutants in fume according to claim 1, it is characterized in that, described gas approach is positioned at the top on described absorption tower, on the sidewall on the absorption tower of described exhanst gas outlet between described ozone injection apparatus and described porous medium layer.
3. the system removing various pollutants in fume according to claim 1, is characterized in that, described system also comprises ozone generating-device, and described ozone generating-device is connected with described ozone injection apparatus.
4. the system removing various pollutants in fume according to claim 1, is characterized in that, the hole of described porous medium layer is consistent with the size of bubbling in described bubble level.
5. the system removing various pollutants in fume according to claim 1, is characterized in that, is provided with preset space length between the bottom on described porous medium layer and described absorption tower.
6. the system removing various pollutants in fume according to claim 1, is characterized in that, described system also comprises the accessory substance treating apparatus for the treatment of crystallization auxiliary product, and described accessory substance treating apparatus is connected with the bottom on described absorption tower.
7. the system removing various pollutants in fume according to claim 1, is characterized in that, described system also comprises dust arrester, and described dust arrester is connected with the entrance of described gas approach.
8. the system removing various pollutants in fume according to claim 1, is characterized in that, described system also comprises air-introduced machine, and described air-introduced machine is connected with described wet scrubber.
9. one kind removes the boiler of various pollutants in fume, it is characterized in that, described boiler comprises boiler furnace, back-end ductwork and the system removing various pollutants in fume as described in any one of claim 1 ~ 8 claim, wherein, one end of described back-end ductwork is connected with described boiler furnace, and the other end of described back-end ductwork is connected with the described system removing various pollutants in fume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852377.5U CN204619711U (en) | 2014-12-26 | 2014-12-26 | A kind of system and boiler removing various pollutants in fume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852377.5U CN204619711U (en) | 2014-12-26 | 2014-12-26 | A kind of system and boiler removing various pollutants in fume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204619711U true CN204619711U (en) | 2015-09-09 |
Family
ID=54038775
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420852377.5U Active CN204619711U (en) | 2014-12-26 | 2014-12-26 | A kind of system and boiler removing various pollutants in fume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204619711U (en) |
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2014
- 2014-12-26 CN CN201420852377.5U patent/CN204619711U/en active Active
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