CN202460450U - Smoke desulfurization system - Google Patents
Smoke desulfurization system Download PDFInfo
- Publication number
- CN202460450U CN202460450U CN2012200392771U CN201220039277U CN202460450U CN 202460450 U CN202460450 U CN 202460450U CN 2012200392771 U CN2012200392771 U CN 2012200392771U CN 201220039277 U CN201220039277 U CN 201220039277U CN 202460450 U CN202460450 U CN 202460450U
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- CN
- China
- Prior art keywords
- circulating pump
- ammonia water
- flue gas
- tower
- ammoniacal liquor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a smoke desulfurization system, which comprises an ammonia water tank, an ammonia water circulating pump, a spray tower and a smoke desulfurization tower, wherein the ammonia water tank is connected with the ammonia water circulating pump; low-concentration ammonia water in the ammonia water tank enters the ammonia water circulating pump to improve concentration; the ammonia water circulating pump, the spray tower and the smoke desulfurization tower are respectively connected via an ammonia water pipeline; a smoke pipeline is connected between the spray tower and the smoke desulfurization tower; and smoke enters the smoke desulfurization tower after being processed by the spray tower. According to the system disclosed by the utility model, the ammonia water obtained by that refined resurgent gas is washed in the ammonia water tank is sent into the spray tower and the smoke desulfurization tower to serve as desulfurizing agent after the concentration of the ammonia water is improved by the ammonia water circulating pump, the desulfurization cost is lowered, meanwhile, liquid formed after desulfurization contains (NH4)2SO4, and the substance of (NH4)2SO4 is further recycled. Pressure on environment protection due to ammonia water discharge is reduced, the desulfurization efficiency is improved, and pollutant discharge is reduced, thereby saving energy and protecting the environment.
Description
Technical field
The utility model relates to a kind of dusty gas treatment system, relates in particular to a kind of flue gas desulphurization system of coal-burning boiler.
Background technology
The resource and environment technology is the problem that we study always in the Chemical Manufacture; Relate to how enterprise reaches energy-saving and emission-reduction according to production status purpose; In with the enterprise of coal as raw material; The technology of various energy-saving and emission-reduction has been practiced thrift the energy widely all in continuous application, has reduced " three wastes " discharging.Flue gas in the coal-burning boiler is because of oxide of containing environmental contaminants such as dust, S and N etc., and environmental pollution is bigger.Traditional flue gas desulfurization mainly is to make raw material with alkali, and processing cost is higher, and removal effect is bad.
The utility model content
Higher for solving the desulfurizing agent cost that has the desulfurizer use now, the problem that desulfurized effect is not good, the utility model provides a kind of novel desulphurization system, can utilize refining regeneration ammoniacal liquor as desulfurizing agent, has reduced desulphurization cost, has improved desulfuration efficiency.
The technical scheme of the utility model is a kind of flue gas desulphurization system; Comprise ammonia vessel, ammoniacal liquor circulating pump, spray column and fume desulfurizing tower; Ammonia vessel is connected with the ammoniacal liquor circulating pump; Low concentration ammoniacal liquor in the ammonia vessel gets into the ammoniacal liquor circulating pump and improves concentration, and the ammoniacal liquor circulating pump is connected through the ammoniacal liquor pipeline respectively with fume desulfurizing tower with spray column and carries the ammoniacal liquor after improving concentration to the spray column fume desulfurizing tower; Connect flue between spray column and the fume desulfurizing tower, get into fume desulfurizing tower again after flue gas is handled through spray column and handle.
Said flue gas desulphurization system also comprises water film dedusting tower, and water film dedusting tower is connected through flue with spray column, and flue gas gets into and gets into spray column again after water film dedusting tower is handled.Water film dedusting tower is used to remove solid matters such as dust in flue gas.
Said flue gas desulphurization system also comprises first circulating pump and second circulating pump, and first circulating pump is connected with spray column through fluid pipeline, and second circulating pump is connected with fume desulfurizing tower through fluid pipeline.First circulating pump and second circulating pump are with handling (the NH that the back obtains with ammoniacal liquor as desulfurizing agent in spray column and the fume desulfurizing tower
4)
2SO
4Solution constantly circulates to absorb and improves concentration.
Has air valve on said first circulating pump and second circulating pump.Air valve is opened the back air and can be got in the pump, makes (NH
4)
2SO
4(the NH that contains in the solution
4)
2SO
3Be oxidized to (NH
4)
2SO
4
Said flue gas desulphurization system also comprises dehumidifier, and dehumidifier is connected with second circulating pump with first circulating pump respectively.Dehumidifier will further be removed moisture through the liquid after first circulating pump and second circulating pump raising concentration.
Said flue gas desulphurization system also comprises centrifuge, and centrifuge is connected with dehumidifier.The product that centrifuge is removed most of moisture with dehumidifier is further dry.
Send into spray column and fume desulfurizing tower after the ammoniacal liquor process ammoniacal liquor circulating pump raising concentration that the system of the utility model utilizes the washing of refining regeneration gas entering ammonia vessel to obtain as desulfurizing agent, reduced desulphurization cost, simultaneously, contain (NH in the liquid that forms after the desulfurization
4)
2SO
4, this material is further recycling also.Reduced the pressure of ammoniacal liquor discharging, improved desulfuration efficiency, reduced the discharging of pollutant, more energy-conserving and environment-protective environmental protection.
Description of drawings
Fig. 1 is the structural representation of the flue gas desulphurization system among the embodiment.
The specific embodiment
Be elaborated below in conjunction with the flue gas desulphurization system of accompanying drawing to the utility model.
Embodiment
As shown in Figure 1; Flue gas desulphurization system; Comprise ammonia vessel 1, ammoniacal liquor circulating pump 2, water film dedusting tower 3, spray column 4 and fume desulfurizing tower 5; Ammonia vessel 1 is connected with ammoniacal liquor circulating pump 2, and the low concentration ammoniacal liquor in the ammonia vessel 1 gets into ammoniacal liquor circulating pump 2 and improves concentration, and ammoniacal liquor circulating pump 2 is connected through ammoniacal liquor pipeline 6 respectively with fume desulfurizing tower 5 with spray column 4 and the ammoniacal liquor after spray column 4 and fume desulfurizing tower 5 are carried raising concentration; Connect through flue 7 successively between water film dedusting tower 3, spray column 4 and the fume desulfurizing tower 5; Flue gas is sent into water film dedusting tower 3 by air-introduced machine 12 earlier as power and is removed solid matters such as dust in flue gas; Get into fume desulfurizing tower 4 again after handling through spray column 4 then and handle, flue gas can reach discharge standard after handling through above-mentioned desulfurization.
Gas ammonia in the refining regeneration gas obtains low concentration ammoniacal liquor after ammonia vessel 1 washing; To obtain the gas ammonia in the low concentration ammoniacal liquor circulation absorption and regeneration gas through ammoniacal liquor circulating pump 2; To improve ammonia concn,, ammoniacal liquor send spray column 4 and fume desulfurizing tower 5 to use after reaching finite concentration as desulfurizing agent.
In spray column 4, ammoniacal liquor absorbs the SO in the flue gas
2, NO
2, obtain (NH
4)
2SO
3(NH
4)
2SO
4Spray liquid.
In fume desulfurizing tower 5, ammoniacal liquor further with flue gas in remaining SO
2, NO
2Reaction obtains (NH
4)
2SO
3(NH
4)
2SO
4Doctor solution.
In order to make flue gas desulphurization system can bring into play bigger effect, make spray liquid and doctor solution also obtain further utilization, flue gas desulphurization system also comprises first circulating pump 8, second circulating pump 9, dehumidifier 10 and centrifuge 11.First circulating pump 8 is through the liquid outlet of fluid pipeline connection spray column 4, and second circulating pump 9 is through the liquid outlet of fluid pipeline connection fume desulfurizing tower 5, and first circulating pump 8 is connected dehumidifier 10 respectively with second circulating pump 9, and dehumidifier 10 connects centrifuges 11.Because the main component in spray liquid and the doctor solution is (NH
4)
2SO
3, (NH
4)
2SO
4And water, on first circulating pump 8 or second circulating pump 9 air valve is arranged, open air valve and get into by air, make (the NH in spray liquid and the doctor solution
4)
2SO
3Be oxidized to (NH
4)
2SO
4Because first circulating pump 8 or second circulating pump 9 constantly circulation absorb and carry densely, spray liquid and doctor solution have just become muddy, remove most moisture through dehumidifier 10, obtain desulfuration byproduct (NH after sending centrifuge 11
4)
2SO
4
Therefore, the SO of the flue gas desulphurization system of the utility model in not only can the effective elimination flue gas
2, NO
2, reaching standard limit of smog release, the ammoniacal liquor that utilizes existing ammonia production has simultaneously reduced the flue gas processing cost as inorganic agent, has also obtained useful byproduct (NH
4)
2SO
4, economic benefit of enterprises is greatly improved.
Claims (5)
1. flue gas desulphurization system; It is characterized in that; Comprise ammonia vessel, ammoniacal liquor circulating pump, spray column and fume desulfurizing tower; Ammonia vessel is connected with the ammoniacal liquor circulating pump, and the low concentration ammoniacal liquor in the ammonia vessel gets into the ammoniacal liquor circulating pump and improves concentration, and the ammoniacal liquor circulating pump is connected through the ammoniacal liquor pipeline respectively with fume desulfurizing tower with spray column; Connect flue between spray column and the fume desulfurizing tower, flue gas gets into fume desulfurizing tower after handling through spray column again.
2. flue gas desulphurization system according to claim 1 is characterized in that said flue gas desulphurization system also comprises water film dedusting tower, and water film dedusting tower is connected through flue with spray column, and flue gas gets into and gets into spray column again after water film dedusting tower is handled.
3. flue gas desulphurization system according to claim 1; It is characterized in that; Said flue gas desulphurization system also comprises first circulating pump and second circulating pump, and first circulating pump is connected with spray column through fluid pipeline, and second circulating pump is connected with fume desulfurizing tower through fluid pipeline.
4. flue gas desulphurization system according to claim 3 is characterized in that said flue gas desulphurization system also comprises dehumidifier, and dehumidifier is connected with second circulating pump with first circulating pump respectively.
5. flue gas desulphurization system according to claim 4 is characterized in that said flue gas desulphurization system also comprises centrifuge, and centrifuge is connected with dehumidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200392771U CN202460450U (en) | 2012-02-08 | 2012-02-08 | Smoke desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200392771U CN202460450U (en) | 2012-02-08 | 2012-02-08 | Smoke desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202460450U true CN202460450U (en) | 2012-10-03 |
Family
ID=46908651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200392771U Expired - Fee Related CN202460450U (en) | 2012-02-08 | 2012-02-08 | Smoke desulfurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202460450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688565A (en) * | 2016-02-04 | 2016-06-22 | 云南旭光节能有限公司 | Metallurgical mine calcining tail gas purifying and heat recycling device and process |
-
2012
- 2012-02-08 CN CN2012200392771U patent/CN202460450U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688565A (en) * | 2016-02-04 | 2016-06-22 | 云南旭光节能有限公司 | Metallurgical mine calcining tail gas purifying and heat recycling device and process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20160208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |