CN101837240A - Desulfurization system - Google Patents
Desulfurization system Download PDFInfo
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- CN101837240A CN101837240A CN200910244189A CN200910244189A CN101837240A CN 101837240 A CN101837240 A CN 101837240A CN 200910244189 A CN200910244189 A CN 200910244189A CN 200910244189 A CN200910244189 A CN 200910244189A CN 101837240 A CN101837240 A CN 101837240A
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Abstract
The invention discloses a desulfurization system, which comprises a desulfurization absorbing tower, a mixing pipe, a desulfurizer nozzle and an oxidated slurry tank; the desulfurization absorbing tower comprises a tower body, the top of which is provided with a clean flue gas outlet and the lower part of which is provided with a mixed liquid outlet; the lower end of the mixing pipe is communicated with the lower part of the tower body, and the upper end of the mixing pipe is provided with a flue gas inlet; the desulfurizer nozzle is inserted into the mixing pipe in order to spray desulfurizer into the mixing pipe; and the oxidated slurry tank is provided with a mixed liquid inlet, an air inlet and a slurry outlet, wherein the mixed liquid inlet is connected with the mixed liquid outlet of the tower body. The desulfurization system has a good mixing effect of flue gas and desulfurizer and a good desulfurization effect.
Description
Technical field
The present invention relates to a kind of desulphurization system, especially relate to a kind of desulphurization system of carrying out desulfurization with zinc oxide.
Background technology
In traditional sulfur removal technology system, desulfurizing agent and flue gas are to mix in the absorption tower, and the bottom on this absorption tower is provided with smoke inlet, and top is provided with the desulfurizing agent inlet.Flue gas enters the absorption tower and mixes desulfurization with desulfurizing agent in the absorption tower from the bottom, absorption tower, then, the clean flue gas after the desulfurization is discharged from the clean exhanst gas outlet at top, absorption tower.Because the cross section on absorption tower is bigger, the mixed effect of flue gas and desulfurizing agent is poor, and desulfurized effect is not good.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.
For this reason, one object of the present invention is to propose the good desulphurization system of good mixing effect, desulfurized effect of a kind of flue gas and desulfurizing agent.
According to a kind of desulphurization system of the present invention, comprise desulfuration absorbing tower, described desulfuration absorbing tower comprises tower body, the bottom that the top of described tower body has clean exhanst gas outlet and tower body has mixture export; Mixing tube, the lower end of described mixing tube is connected with the bottom of tower body, and the upper end of described mixing tube has smoke inlet; And desulfurizer nozzle, described desulfurizer nozzle is inserted in the mixing tube with injection desulfurization agent in mixing tube; With the oxidation stock tank, described oxidation stock tank has entry to mixed solution, air intake, slurries outlet, and wherein said entry to mixed solution links to each other with the mixture export of tower body.
According to desulphurization system of the present invention, by on the tower body of desulfuration absorbing tower, mixing tube being set,, the cross section of mixing tube reduces because comparing greatly with tower body, and flue gas and desulfurizing agent are mixed in mixing tube fully, thereby obtain the higher desulfuration effect.
In addition, also have following additional technical feature according to desulfuration absorbing tower of the present invention:
Described oxidation stock tank also has air outlet slit, and described tower body also has the air intake that links to each other with oxidation stock tank air outlet slit.
Described desulphurization system further comprises slurry circulating pump, and the outlet of described slurry circulating pump links to each other with the oxidation stock tank respectively with inlet.
In an embodiment of the invention, described desulphurization system further comprises technology water tank and slurry tank, and described technology water tank links to each other with moisturizing in the oxidation stock tank with the oxidation stock tank, and described slurry tank links to each other with desulfurizer nozzle.
In yet another embodiment of the present invention, the outlet of described slurry circulating pump also links to each other with desulfurizer nozzle turning back in the desulfurizer nozzle from a part of slurries in the oxidation stock tank.
The inlet of described slurry circulating pump also links to each other with described slurry tank so that the zinc oxide slurries in the slurry circulating pump and described a part of slurries are delivered in the desulfurizer nozzle.
Described desulfurizer nozzle is inserted in the mixing tube from described smoke inlet.
Described desulfuration absorbing tower further comprises fume pipe, and described fume pipe links to each other with described mixing tube at described smoke inlet place.
Described mixing tube has the undergauge section of reduced, described undergauge section be positioned at desulfurizer nozzle be inserted into mixing tube an end below.By reducing diameter part is set, can further improve the mixed effect of flue gas and desulfurizing agent, it is more abundant that flue gas is contacted with desulfurizing agent, thereby reach further desulfurized effect.
Be provided with demister in the described absorption tower.Demister can be used to purify the liquid that the back flue gas is carried secretly in the filtering desulfuration absorbing tower, thereby makes the clean flue gas that contains less drop discharge from clean exhanst gas outlet.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the structural representation of desulphurization system according to an embodiment of the invention;
Fig. 2 is the structural representation of desulphurization system according to another embodiment of the invention; With
Fig. 3 is the schematic diagram of the desulfuration absorbing tower of the desulphurization system shown in Fig. 1 and Fig. 2.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, term " on ", close the orientation of indications such as D score, " top ", " end " or position is based on orientation shown in the drawings or position relation, only be the present invention for convenience of description rather than require the present invention therefore can not be interpreted as limitation of the present invention with specific orientation structure and operation.
Below with reference to the desulphurization system of Fig. 1-Fig. 3 description according to the embodiment of the invention.
The structure of the desulfuration absorbing tower 1 that has in the desulphurization system according to the embodiment of the invention is at first described according to Fig. 3.
Desulfuration absorbing tower comprises tower body 11, mixing tube 12 and desulfurizer nozzle 13.
Have clean exhanst gas outlet 111 at the top of tower body 11, have mixture export 112 in the bottom of tower body 11.In addition, tower body 11 also has air inlet 115, and wherein, air inlet 115 is higher than mixture export 112.In an example of the present invention, in tower body, also be provided with demister, wherein, demister comprises last demister 113 and the following demister 114 that is spaced apart between the upper and lower.Demister can be used to purify the liquid that the back flue gas is carried secretly in the filtering desulfuration absorbing tower, thereby makes the clean flue gas that contains less drop discharge from clean exhanst gas outlet 111.And two-layer demister is set, the filtration result that purifies the drop in the flue gas of back is better.
Has smoke inlet 121 in the upper end of mixing tube 12.The upper surface of mixing tube 12 is the inclined-plane, and promptly the end face of smoke inlet 121 is the inclined-plane, and flue gas enters mixing tube from smoke inlet 121.In an example of the present invention, 121 places are connected with fume pipe 14 at smoke inlet, fume pipe 14 links to each other with mixing tube 12 at smoke inlet 121 places obliquely, for example fume pipe 14 links to each other with the upper end of mixing tube 12 at smoke inlet 121 places, to feed flue gas, also can regard the part of mixing tube 12 as for persons of ordinary skill in the art may appreciate that fume pipe 14.
The lower end of mixing tube 12 is connected with the bottom of tower body 11.By mixing tube 12 is separated setting with tower body 11, make flue gas in mixing tube 12, mix to contact and carry out desulfurization with desulfurizing agent, because the internal diameter of mixing tube 12 less than the internal diameter of tower body 11, therefore can make flue gas and desulfurizing agent mix fully, thereby obtain the higher desulfuration effect in mixing tube 12.
Alternatively, mixing tube 12 can be the L type, and then an end of its horizontal tube links to each other with the bottom of tower body 11.In an example of the present invention, the end port that mixing tube 12 is connected with tower body 11 is higher than mixture export 112.
In addition, on tower body 11, be provided with two manholes 116, use for safeguarding.
Describe desulphurization system according to an embodiment of the invention below with reference to Fig. 1, wherein desulfurizing agent is an example with the zinc oxide slurries.
Desulphurization system comprises desulfuration absorbing tower 1, booster fan 2, oxidation stock tank 3, slurry circulating pump 4, technology water tank 5, technology water pump 6, slurry tank 7, slurry tank pump 8 and oxidation fan 9.Wherein, booster fan 2 links to each other with the fume pipe 14 of desulfuration absorbing tower 1 to feed flue gas by fume pipe 14 in mixing tube 12.
The outlet of slurry circulating pump 4 links to each other with oxidation stock tank 3 respectively with inlet and forms the loop with oxidation stock tank 3, thereby yet slurry circulating pump 4 is sent the extraction of the mixed liquor in the oxidation stock tank 3 back to oxidation stock tank 3, can constantly stir the mixed liquor in the oxidation stock tank 3 thus.
Below the simple course of work of describing desulphurization system according to the above embodiment of the present invention.
Flue gas is sent into by booster fan 2 in the mixing tube 12 of desulfuration absorbing tower 1, mixes with zinc oxide slurries in the mixing tube 12 of sending into desulfuration absorbing tower 1 by slurry tank 7 by slurry tank pump 8, and then washing desulphurization.Clean flue gas after the desulfurization is discharged from the clean exhanst gas outlet 111 of tower body 11, and the mixed liquor (ZnSO3 and the remaining zinc oxide slurries that comprise generation) that the zinc oxide slurries absorb after the sulfur dioxide sulphur is discharged to the oxidation stock tank 3 from the mixture export 112 of desulfuration absorbing tower 1.
Zinc sulfite in the mixed liquor in the oxidation stock tank 3 and the airborne oxygen reaction that feeds in the oxidation stock tank 3 by oxidation fan 9, formation may contain the ZnSO4 solution of a small amount of ZnSO3 and ZnO.Solution in the oxidation stock tank 3 constantly stirs by slurry circulating pump 4, and solution is fully mixed with airborne oxygen, with the reaction of promotion oxygen and zinc sulfite, and can prevent the slurries precipitation.In addition, technology water tank 4 adds to water in the oxidation stock tank 3 by technology water pump 6.At last, ZnSO4 solution is discharged from the outlet of oxidation stock tank 3.
Below with reference to Fig. 2 description desulphurization system according to another embodiment of the invention.The desulphurization system shown in Figure 2 and the difference of the desulphurization system shown in Fig. 1 mainly are the annexation of slurry circulating pump 4, slurry tank 7 and desulfurizer nozzle 13, therefore describe slurry circulating pump 4, slurry tank 7 and desulfurizer nozzle 13 below emphatically, the description of other same sections is omitted.
As shown in Figure 2, the outlet of slurry circulating pump 4 forms the loop with oxidation stock tank 3 except linking to each other with oxidation stock tank 3 respectively with inlet, the outlet of slurry circulating pump 4 also links to each other with the desulfurizer nozzle 13 of tower body, turning back in the desulfurizer nozzle 13 from a part of slurries in the oxidation stock tank 3.The inlet of slurry circulating pump 4 also links to each other with slurry tank 7 by slurry tank pump 8, so that zinc oxide slurries and a part of slurries in the slurry circulating pump 4 are delivered in the desulfurizer nozzle 13, that is to say, slurry tank 7 is not directly sent into the zinc oxide slurries in the desulfurizer nozzle 13, but send into earlier in the slurry circulating pump 4, by slurry circulating pump 4 the zinc oxide slurries are delivered in the desulfurizer nozzle 13 together then.
The course of work of desulphurization system according to the above embodiment of the present invention is:
Flue gas is sent into by booster fan 2 in the mixing tube 12 of desulfuration absorbing tower 1, and the zinc oxide slurries that slurry circulating pump 4 is sent in the mixing tube 12 of desulfuration absorbing tower 1 mix, and then washing desulphurization.Clean flue gas after the desulfurization is discharged from the clean exhanst gas outlet 111 of tower body 11, and the mixed liquor (ZnSO3 that comprises generation, and remaining zinc oxide slurries) that the zinc oxide slurries absorb after the sulfur dioxide is discharged to the oxidation stock tank 3 from the mixture export 112 of desulfuration absorbing tower 1.
Zinc sulfite in the mixed liquor in the oxidation stock tank 3 and the airborne oxygen reaction that feeds in the oxidation stock tank 3 by oxidation fan 9, formation may contain the ZnSO4 solution of a small amount of ZnSO3 and ZnO.Solution in the oxidation stock tank 3 constantly stirs by slurry circulating pump 4, and solution is fully mixed with airborne oxygen, to promote the reaction of oxygen and zinc sulfite.In addition, technology water tank 4 adds to water in the oxidation stock tank 3 by technology water pump 6.At last, ZnSO4 solution is discharged from the outlet of oxidation stock tank 3.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment under the situation that does not break away from principle of the present invention and aim, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. a desulphurization system is characterized in that, comprising:
Desulfuration absorbing tower, described desulfuration absorbing tower comprises tower body, the bottom that the top of described tower body has clean exhanst gas outlet and tower body has mixture export; Mixing tube, the lower end of described mixing tube is connected with the bottom of tower body, and the upper end of described mixing tube has smoke inlet; And desulfurizer nozzle, described desulfurizer nozzle is inserted in the mixing tube with injection desulfurization agent in mixing tube; With
Oxidation stock tank, described oxidation stock tank have entry to mixed solution, air intake, slurries outlet, and wherein said entry to mixed solution links to each other with the mixture export of tower body.
2. desulphurization system according to claim 1 is characterized in that, described oxidation stock tank also has air outlet slit, and described tower body also has the air intake that links to each other with oxidation stock tank air outlet slit.
3. desulphurization system according to claim 1 is characterized in that, further comprises slurry circulating pump, and the outlet of described slurry circulating pump links to each other with the oxidation stock tank respectively with inlet.
4. desulphurization system according to claim 3 is characterized in that, further comprises technology water tank 5 and slurry tank 7, and described technology water tank links to each other with moisturizing in the oxidation stock tank with the oxidation stock tank, and described slurry tank links to each other with desulfurizer nozzle.
5. according to claim 3 or 4 described desulphurization systems, it is characterized in that the outlet of slurry circulating pump also links to each other with desulfurizer nozzle turning back in the desulfurizer nozzle from a part of slurries in the oxidation stock tank.
6. desulphurization system according to claim 5 is characterized in that, the inlet of described slurry circulating pump also links to each other with described slurry tank so that the zinc oxide slurries in the slurry circulating pump and described a part of slurries are delivered in the desulfurizer nozzle.
7. desulphurization system according to claim 1 is characterized in that described desulfurizer nozzle is inserted in the mixing tube from described smoke inlet.
8. desulphurization system according to claim 1 is characterized in that, further comprises fume pipe, and described fume pipe links to each other with described mixing tube at described smoke inlet place.
9. desulphurization system according to claim 1 is characterized in that, described mixing tube has the undergauge section of reduced, described undergauge section be positioned at desulfurizer nozzle be inserted into mixing tube an end below.
10. desulphurization system according to claim 1 is characterized in that, is provided with demister in the absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102441898A CN101837240B (en) | 2009-12-30 | 2009-12-30 | Desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102441898A CN101837240B (en) | 2009-12-30 | 2009-12-30 | Desulfurization system |
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| Publication Number | Publication Date |
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| CN101837240A true CN101837240A (en) | 2010-09-22 |
| CN101837240B CN101837240B (en) | 2013-04-03 |
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| CN2009102441898A Active CN101837240B (en) | 2009-12-30 | 2009-12-30 | Desulfurization system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102652899A (en) * | 2012-05-08 | 2012-09-05 | 杭州三耐环保科技有限公司 | System for recovering sulfur dioxide in flue gas |
| CN104740991A (en) * | 2015-03-19 | 2015-07-01 | 沈阳化工大学 | Method for wet dust removal and desulfurization of coal-fired flue gas |
| CN110642286A (en) * | 2019-09-06 | 2020-01-03 | 云南中陇生态环境工程有限公司 | Method and device for deeply oxidizing zinc sulfite into zinc sulfate and application of method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07102300B2 (en) * | 1989-02-07 | 1995-11-08 | 宇部興産株式会社 | Gas absorption tower |
| CN2258584Y (en) * | 1996-04-17 | 1997-07-30 | 北京市机电研究院环境保护技术研究所 | Exhausting treatment equipment after rubish incineration |
| CN100384518C (en) * | 2005-06-03 | 2008-04-30 | 吴金泉 | Smoke desulfidation from amino bialkali method |
| CN201231131Y (en) * | 2007-12-29 | 2009-05-06 | 北京博奇电力科技有限公司 | Flue gas desulfurization system |
-
2009
- 2009-12-30 CN CN2009102441898A patent/CN101837240B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102652899A (en) * | 2012-05-08 | 2012-09-05 | 杭州三耐环保科技有限公司 | System for recovering sulfur dioxide in flue gas |
| CN104740991A (en) * | 2015-03-19 | 2015-07-01 | 沈阳化工大学 | Method for wet dust removal and desulfurization of coal-fired flue gas |
| CN104740991B (en) * | 2015-03-19 | 2017-10-24 | 沈阳化工大学 | A kind of method of coal-fired flue-gas wet dedusting desulfurization |
| CN110642286A (en) * | 2019-09-06 | 2020-01-03 | 云南中陇生态环境工程有限公司 | Method and device for deeply oxidizing zinc sulfite into zinc sulfate and application of method |
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| Publication number | Publication date |
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| CN101837240B (en) | 2013-04-03 |
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