CN204601967U - A kind of flue gas desulfurization and denitrification system - Google Patents
A kind of flue gas desulfurization and denitrification system Download PDFInfo
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- CN204601967U CN204601967U CN201520039621.0U CN201520039621U CN204601967U CN 204601967 U CN204601967 U CN 204601967U CN 201520039621 U CN201520039621 U CN 201520039621U CN 204601967 U CN204601967 U CN 204601967U
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- desulfurization
- reactor
- flue gas
- ammonia
- flue
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Abstract
The utility model discloses a kind of flue gas desulfurization and denitrification system, comprise the denitration mechanism and desulfurization mechanism that are connected respectively with flue and chimney, denitration mechanism is connected by waste heat boiler with desulfurization mechanism, the top of Benitration reactor is provided with the connector communicated with flue, the side of Benitration reactor from top to bottom uniform intervals is provided with the some ammonia water spray pumps and nozzle that are connected with tank used for storing ammonia, the upper end of Benitration reactor is provided with soot blower, desulfurization mechanism comprises desulfurization reactor and is arranged on desulfurization reactor top and the ammonia spraying device communicated with it, the connector that the both sides of desulfurization reactor are respectively arranged with oxidation fan and are connected with chimney.The beneficial effects of the utility model: the utility model provides a kind of flue gas desulfurization and denitrification integrated technique system, this system non-secondary pollution, resource consumption is few, operating cost is low, and the accessory substance of system can also become Fei Weibao, recycles.
Description
Technical field
The utility model relates to environmental technology field, specifically, relates to a kind of flue gas desulfurization and denitrification system.
Background technology
SO in coal-fired flue-gas
2, NO
xthe primary pollution source of air.In recent years, China's flue gas desulfurization industry has developed into larger scale by introduce absorption foreign technology, but with this formed with calcium method be definitely leading desulfurization industry show gradually desulfurated plaster dispose difficulty, equipment scaling serious, consume large quantities of lime stone resource, also there is the secondary pollution problems such as waste water and dregs simultaneously.
Along with going deep into of environmental protection work; denitrating flue gas has entered the important schedule that air is administered; and the denitration technology of main flow remains the external SCR technology introduced in current engineer applied, not only invest owing to wanting spent catalyst and absorbent in high but also running, operating cost is higher.
For the problem mentioned in above-mentioned correlation technique, at present effective solution is not yet proposed.
Utility model content
For the problem mentioned above-mentioned in correlation technique, the utility model proposes a kind of flue gas desulfurization and denitrification system, effectively can solve that fume treatment resource consumption is many, operating cost is high, easily produce secondary pollution problems.
For realizing above-mentioned technical purpose, the technical solution of the utility model is achieved in that
A kind of flue gas desulfurization and denitrification system, comprise the denitration mechanism and desulfurization mechanism that are connected respectively with flue and chimney, described denitration mechanism is connected by waste heat boiler with described desulfurization mechanism, the tank used for storing ammonia that described denitration mechanism comprises Benitration reactor and is connected with described Benitration reactor, wherein, the top of described Benitration reactor is provided with the connector communicated with described flue, the side of described Benitration reactor from top to bottom uniform intervals is provided with the some ammonia water spray pumps and nozzle that are connected with described tank used for storing ammonia, the side of relatively described ammonia water spray pump and the upper end being positioned at described Benitration reactor is provided with soot blower and its lower end is provided with the pipeline be connected with described waste heat boiler, described desulfurization mechanism comprises desulfurization reactor and is arranged on described desulfurization reactor top and the ammonia spraying device communicated with it, the pipeline be connected with described waste heat boiler is provided with bottom described desulfurization reactor, and, the connector that the both sides of described desulfurization reactor are respectively arranged with oxidation fan and are connected with described chimney.
Further, described Benitration reactor is vertical Benitration reactor, and it is set to three layers from top to bottom, and every one deck correspondence is provided with the ammonia water spray pump and nozzle that are connected with described tank used for storing ammonia.
Further, the ammoniacal liquor drop of described ammonia water spray pump and nozzle ejection is less than or equal to 20 μm.
Further, described soot blower is acoustic wave ash ejector.
Further, described desulfurization reactor is monotubular vertical vortex plate tower desulfurization reactor.
Further, described desulfurizing tower is rotating stream tray scrubber, and desulfurizing tower is monotubular vertical structure.
Further, the flue-gas temperature in described flue is 280 DEG C-290 DEG C.
Further, the flue-gas temperature in described waste heat boiler is 160 DEG C.
The beneficial effects of the utility model: the utility model provides a kind of flue gas desulfurization and denitrification integrated technique system, this system non-secondary pollution, resource consumption is few, operating cost is low, and the accessory substance of system can also become Fei Weibao, recycles.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the flue gas desulfurization and denitrification system according to the utility model embodiment.
In figure:
1, flue; 2, Benitration reactor; 3, tank used for storing ammonia; 4, ammonia water spray pump; 5, soot blower; 6, waste heat boiler; 7, desulfurizing tower; 8, oxidation fan; 9, ammonia spraying device; 10, chimney.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
As shown in Figure 1, according to described flue gas desulfurization and denitrification system of the present utility model, comprise the denitration mechanism and desulfurization mechanism that are connected respectively with flue 1 and chimney 10, described denitration mechanism is connected by waste heat boiler 6 with described desulfurization mechanism, the tank used for storing ammonia 3 that described denitration mechanism comprises Benitration reactor 2 and is connected with described Benitration reactor 2, wherein, the top of described Benitration reactor 2 is provided with the connector communicated with described flue 1, the side of described Benitration reactor from top to bottom uniform intervals is provided with the some ammonia water spray pumps 4 and nozzle that are connected with described tank used for storing ammonia 3, the side of relatively described ammonia water spray the pump 4 and upper end being positioned at described Benitration reactor 2 is provided with soot blower 5 and its lower end is provided with the pipeline be connected with described waste heat boiler 6, described desulfurization mechanism comprises desulfurization reactor 7 and is arranged on described desulfurization reactor 7 top and the ammonia spraying device 9 communicated with it, the pipeline be connected with described waste heat boiler 6 is provided with bottom described desulfurization reactor 7, and, the connector that the both sides of described desulfurization reactor 6 are respectively arranged with oxidation fan 8 and are connected with described chimney 10.
In addition, in a specific embodiment, described Benitration reactor 2 is vertical Benitration reactor, and it is set to three layers from top to bottom, and every one deck correspondence is provided with the ammonia water spray pump 4 and nozzle that are connected with described tank used for storing ammonia 3.
In addition, in a specific embodiment, the ammoniacal liquor liquid-drop diameter of described ammonia water spray pump 4 and nozzle ejection is less than or equal to 20 μm.
In addition, in a specific embodiment, described soot blower 5 is acoustic wave ash ejector.
In addition, in a specific embodiment, the top layer of described Benitration reactor 2 is provided with acoustic wave ash ejector 5.
In addition, in a specific embodiment, described desulfurization reactor 7 is monotubular vertical vortex plate tower desulfurization reactor.
In addition, in a specific embodiment, the flue-gas temperature in described flue 1 is 280 DEG C-290 DEG C.
In addition, in a specific embodiment, the flue-gas temperature in described waste heat boiler 6 is 160 DEG C.
Conveniently understand technique scheme of the present utility model, below by way of in concrete occupation mode, technique scheme of the present utility model is described in detail.
When specifically using, first the factory chimney flue gas of 280 DEG C-290 DEG C out enters reactor 2 by flue 1 and carries out denitration.Flue gas enters the top of reactor, vertically flows downward and passes through reactor.
Reactor every layer is provided with ammonia water spray pump 4 and spray ammonia nozzle, and the droplet that ammonia spirit is atomized into less than 20 μm by ultra-fine atomization spray nozzle is injected in flue, and fine ammoniacal liquor drop flashes to ammonia at once.Ammonia is mixed with flue gas.Under the effect of ammonia catalyst, the NO in flue gas
xbe reduced to the N of nontoxic pollution-free
2and H
2o, does not have waste liquid to produce, non-secondary pollution.The SCR reaction taking ammonia as reducing agent is as follows:
4NH
3+4NO+O
2→4N
2+6H
2O ；4NH
3+2NO
2+O
2→3N
2+6H
2O
Arrange acoustic wave ash ejector 5 in reactor, can keep the clean continuously of ammonia catalyst, deashing is thorough, do not stay dead angle, realize to greatest extent, best utilize catalyst to the catalytic activity of denitration reaction, in the life-span of extending catalyst, reduce the maintenance cost of reactor.
Flue gas after denitration enters waste heat boiler 6, and the flue-gas temperature after waste heat recovery, greatly about 160 DEG C, now enters desulfurizing tower 7 again and carries out desulfurization.
The desulfurizing tower 7 adopted in the utility model is rotating stream tray scrubber, it is a kind of mass transfer apparatus of efficient general type, due to special internal structure design, make it have the advantages such as load is high, pressure drop is low, not easily block up, operating flexibility is wide, combination property is better than miscellaneous equipment, is applicable to quick absorption process.During for wet process of FGD, there is very high desulfuration efficiency; Meanwhile, rotating stream tray scrubber also has good dust removal performance, can realize the desulfurization to flue gas, dust removal integrated process.
Desulfurizing tower 7 is monotubular vertical structure, and smoke inlet is in tower bottom, and ammonia spraying device 9 is on tower top.The circulation fluid that ammonia spraying device 9 sprays from top to bottom sprays from tower top.Gas is sent at the bottom of tower, is counter current contacting state from bottom to top with circulation fluid, gas-liquid two-phase close contact in this region, dilution, diffusion, in and etc. effect under, SO
2with NH
3there is a series of reaction, thus complete and remove SO
2purification process, the grit in gas is also easily adhered to by water smoke and removes.
Oxidation fan 8 continues in desulfurizing tower, blast oxidation air, and the concentration of liquid to be recycled is separately recycled to sending into subsequent treatment during finite concentration.
Flue gas up to standard after desulfurization enters air through chimney after desulfurizing tower demist, reaches and pollutes flue gas desulfurization and denitrification effect.
In sum, the utility model provides a kind of flue gas desulfurization and denitrification integrated technique system, and this system non-secondary pollution, resource consumption is few, operating cost is low, and the accessory substance of system can also become Fei Weibao, recycles.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a flue gas desulfurization and denitrification system, it is characterized in that, comprise the denitration mechanism and desulfurization mechanism that are connected respectively with flue (1) and chimney (10), described denitration mechanism is connected by waste heat boiler (6) with described desulfurization mechanism, the tank used for storing ammonia (3) that described denitration mechanism comprises Benitration reactor (2) and is connected with described Benitration reactor (2), wherein, the top of described Benitration reactor (2) is provided with the connector communicated with described flue (1), the side of described Benitration reactor (2) from top to bottom uniform intervals is provided with the some ammonia water spray pumps (4) and nozzle that are connected with described tank used for storing ammonia (3), the side of relatively described ammonia water spray pump (4) and the upper end being positioned at described Benitration reactor (2) is provided with soot blower (5) and its lower end is provided with the pipeline be connected with described waste heat boiler (6), described desulfurization mechanism comprises desulfurization reactor (7) and is arranged on described desulfurization reactor (7) top and the ammonia spraying device (9) communicated with it, described desulfurization reactor (7) bottom is provided with the pipeline be connected with described waste heat boiler (6), and, the connector that the both sides of described desulfurization reactor (7) are respectively arranged with oxidation fan (8) and are connected with described chimney (10).
2. flue gas desulfurization and denitrification system according to claim 1, it is characterized in that, described Benitration reactor (2) is vertical Benitration reactor, and it is set to three layers from top to bottom, further, every one deck correspondence is provided with the ammonia water spray pump (4) and nozzle that are connected with described tank used for storing ammonia (3).
3. flue gas desulfurization and denitrification system according to claim 1, is characterized in that, the ammoniacal liquor liquid-drop diameter of described ammonia water spray pump (4) and nozzle ejection is less than or equal to 20 μm.
4. flue gas desulfurization and denitrification system according to claim 1, is characterized in that, described soot blower (5) is acoustic wave ash ejector.
5. flue gas desulfurization and denitrification system according to claim 1, is characterized in that, described desulfurization reactor (7) is monotubular vertical vortex plate tower desulfurization reactor.
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|---|---|---|---|
| CN201520039621.0U CN204601967U (en) | 2015-01-20 | 2015-01-20 | A kind of flue gas desulfurization and denitrification system |
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|---|---|---|---|
| CN201520039621.0U CN204601967U (en) | 2015-01-20 | 2015-01-20 | A kind of flue gas desulfurization and denitrification system |
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|---|---|
| CN204601967U true CN204601967U (en) | 2015-09-02 |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786403A (en) * | 2017-05-02 | 2018-11-13 | 中国石油化工股份有限公司 | A kind of Benitration reactor and denitration sulfur method |
| CN116832601A (en) * | 2023-07-27 | 2023-10-03 | 新乡化纤股份有限公司 | Comprehensive treatment method for boiler flue gas and pressure washing wastewater in viscose fiber industry |
-
2015
- 2015-01-20 CN CN201520039621.0U patent/CN204601967U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786403A (en) * | 2017-05-02 | 2018-11-13 | 中国石油化工股份有限公司 | A kind of Benitration reactor and denitration sulfur method |
| CN108786403B (en) * | 2017-05-02 | 2021-08-31 | 中国石油化工股份有限公司 | Denitration reactor and denitration and desulfurization method |
| CN116832601A (en) * | 2023-07-27 | 2023-10-03 | 新乡化纤股份有限公司 | Comprehensive treatment method for boiler flue gas and pressure washing wastewater in viscose fiber industry |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20190120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |