CN201135854Y - Desulfurizing device suitable for wet process flue gas desulfurization - Google Patents
Desulfurizing device suitable for wet process flue gas desulfurization Download PDFInfo
- Publication number
- CN201135854Y CN201135854Y CNU2007201874215U CN200720187421U CN201135854Y CN 201135854 Y CN201135854 Y CN 201135854Y CN U2007201874215 U CNU2007201874215 U CN U2007201874215U CN 200720187421 U CN200720187421 U CN 200720187421U CN 201135854 Y CN201135854 Y CN 201135854Y
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- desulfurizing
- tower
- fume
- cooling tower
- slurry
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Abstract
The utility model relates to a desulfurizing device suitable for the wet method fume desulfurization, which belongs to the wet method fume desulfurization technology of the thermal power plant in the technical field of the environmental protection. The desulfurizing device comprises a desulfurizing tower and a cooling tower. A slurry inlet opening of a slurry tank at the bottom of the desulfurizing tower is connected with a slurry box through a pump, and a slurry outlet opening is connected with a discharge pump. The slurry in the slurry tank is pumped into the desulfurizing tower and a spraying layer arranged above a fume inlet opening through the circulating pump, and a mist eliminator is arranged above the spraying layer. The desulfurizing device is structurally characterized in that the top of the desulfurizing tower is connected to a trumpet-shaped fume outlet opening on the wall of the cooling tower. Compared with the prior art, the desulfurizing device has the advantages that a chimney and the cooling tower are combined into a whole, the investment and the operating and servicing cost of the chimney and the fume reheating system are saved, and the drop of the desulfurizing efficiency caused by fume leakage is avoided as well.
Description
Technical field
The utility model relates to the thermal power plant wet process of FGD technology of environmental technology field, particularly is applicable to the desulfurizer of wet process of FGD liquid column tower cigarette tower unification.
Background technology
In recent years, along with the environmental requirement of China is more and more stricter, the wet process of FGD technology is widely used, and newly-built unit major part has all adopted wet fuel gas desulfurizing technology.And liquid column tower wet process of FGD technology wherein is stable because of its desulfuration efficiency height, and the controllability advantages of higher has obtained using widely.In the prior art, being applicable to the device of liquid column tower wet process of FGD, all is after flue gas is through liquid column-spraying desulfurizing tower and cooling tower, flue gas is heated through smoke stack emission again.Flue gas has increased because of not purifying the desulfuration efficiency decline that smoke spillage causes through reheat system.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, the purpose of this utility model provides a kind of desulfurizer that is applicable to wet process of FGD.It unites two into one chimney and cooling tower, has saved investment and the operation and the upkeep cost of chimney and flue gas reheat system, and the desulfuration efficiency of also having avoided causing because of smoke spillage descends.
To achieve the above object of the invention, the technical solution of the utility model realizes as follows:
Be applicable to the desulfurizer of wet process of FGD, it comprises desulfurizing tower and cooling tower.The slurries inlet in slurries pond, described desulfurizing tower bottom links to each other with the slurries case by supply pump, and the slurries outlet links to each other with excavationg pump.With in the jetted layers that slurries are extracted in the desulfurizing tower, the smoke inlet top is set, described jetted layers top is provided with demister by circulating pump in described slurries pond.Its design feature is that the desulfurizing tower top is connected to the exhanst gas outlet of cooling tower wall trumpet type by flue.
The utility model utilizes cooling tower discharging flue gas owing to adopted said structure, the existing original heat sinking function of cooling tower, the clean flue gas after the alternative again smoke stack emission desulfurization.The utility model utilizes cooling tower discharging flue gas, clean flue gas after the desulfurization need not to heat again, improved power plant efficiency, saved investment, operation and the upkeep cost of chimney and flue gas reheat system, also avoided not purifying smoke spillage in the flue gas reheat system and harm that the desulfuration efficiency that causes descends.In addition, utilize cooling tower discharging flue gas also to satisfy of the limit for height requirement of some city power plant to chimney.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
Referring to accompanying drawing, the utility model comprises desulfurizing tower 2 and cooling tower 8.The slurries inlet in slurries pond, desulfurizing tower 2 bottom links to each other with slurries case 1 by supply pump 3, and the slurries outlet links to each other with excavationg pump 7.With in the jetted layers 5 that slurries are extracted in the desulfurizing tower 2, smoke inlet 10 tops are set, jetted layers 5 tops are provided with demister 6 by circulating pump 4 in the slurries pond.Desulfurizing tower 2 tops are connected to the exhanst gas outlet 9 of cooling tower 8 wall trumpet types by flue.
When the utility model device used, flow process was as follows:
Lime stone slurry in the slurries case 1 is transported to by supply pump 3 in the slurries pond of desulfurizing tower 2 bottoms, by following pump 4 lime stone slurry is extracted in the jetted layers 5 again.Simultaneously, flue gas enters liquid column-spraying desulfurizing tower 2 by smoke inlet 10, mixes with the lime stone slurry that ejects above jetted layers 5.The sulfide that removes in the flue gas is blended in the slurries pond of together returning desulfurizing tower 2 bottoms in the lime stone slurry, and discharges by excavationg pump 7.Flue gas after being purified then rises to demist in the demister 6, after the demist trumpet type exhanst gas outlet 9 of equally distributed clean flue gas by desulfurizing tower 2 top flues and cooling tower 8 walls enter in the cooling tower 8, the top of spraying layer, last flue gas is discharged in the atmosphere by cooling tower 8 top exits.
Because the clean flue-gas temperature that gives off from desulfurizing tower 2 is higher than the temperature of humid air in the cooling tower 8, the mixed heat transfer phenomenon takes place in the two, and the process of mixing makes the following variation of airflow field generation in the cooling tower 8.At first, enter the density that cooling tower 8 interior clean smoke densities are lower than air in the cooling tower 8, this has increased the heat buoyancy of air in the cooling tower 8.Secondly, the flue gas volume that enters cooling tower 8 only accounts for below 10% of cooling tower 8 volume of air, so flue gas can be by cooling off the interior smooth lifting of air of cooling tower 8 in being discharged into atmosphere naturally.In addition, owing to be wet flue gas, in the process of lifting, can steam occur and condense because of the reduction of pressure and reducing of saturation specific humidity.Steam condenses and can discharge the latent heat of condensation, and this can make the wet flue gas temperature raise, and buoyancy increases, also at double increase of rising height.Experimental results show that and adopt the dry flue gas height of the utility model technology discharged flue gas rising height apparently higher than the smoke stack emission of synthermal process down.
Claims (1)
1, is applicable to the desulfurizer of wet process of FGD, it comprises desulfurizing tower (2) and cooling tower (8), the slurries inlet in slurries pond, described desulfurizing tower (2) bottom links to each other with slurries case (1) by supply pump (3), the slurries outlet links to each other with excavationg pump (7), described slurries pond is extracted into slurries in the jetted layers (5) that desulfurizing tower (2) is interior, smoke inlet (10) top is set by circulating pump (4), described jetted layers (5) top is provided with demister (6), it is characterized in that desulfurizing tower (2) top is connected to the exhanst gas outlet (9) of cooling tower (8) wall trumpet type by flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201874215U CN201135854Y (en) | 2007-12-24 | 2007-12-24 | Desulfurizing device suitable for wet process flue gas desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201874215U CN201135854Y (en) | 2007-12-24 | 2007-12-24 | Desulfurizing device suitable for wet process flue gas desulfurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201135854Y true CN201135854Y (en) | 2008-10-22 |
Family
ID=40036542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201874215U Expired - Lifetime CN201135854Y (en) | 2007-12-24 | 2007-12-24 | Desulfurizing device suitable for wet process flue gas desulfurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201135854Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343215A (en) * | 2011-09-28 | 2012-02-08 | 华南理工大学 | Dual-chamber multi-absorption wet flue gas desulfurizing device |
| CN103120894A (en) * | 2013-03-14 | 2013-05-29 | 中电投远达环保工程有限公司 | Desulfurizing absorption tower |
-
2007
- 2007-12-24 CN CNU2007201874215U patent/CN201135854Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343215A (en) * | 2011-09-28 | 2012-02-08 | 华南理工大学 | Dual-chamber multi-absorption wet flue gas desulfurizing device |
| CN103120894A (en) * | 2013-03-14 | 2013-05-29 | 中电投远达环保工程有限公司 | Desulfurizing absorption tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081022 |
|
| CX01 | Expiry of patent term |