CN202516465U - Venturi structure for semi-dry desulfurization tower of circulating fluidized bed - Google Patents
Venturi structure for semi-dry desulfurization tower of circulating fluidized bed Download PDFInfo
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- CN202516465U CN202516465U CN2012201312168U CN201220131216U CN202516465U CN 202516465 U CN202516465 U CN 202516465U CN 2012201312168 U CN2012201312168 U CN 2012201312168U CN 201220131216 U CN201220131216 U CN 201220131216U CN 202516465 U CN202516465 U CN 202516465U
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- venturi tube
- venturi
- center
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- flue gas
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Abstract
The utility model discloses a Venturi structure for a semi-dry desulfurization tower of a circulating fluidized bed. The Venturi structure comprises an outer Venturi tube (1), and is characterized in that a center Venturi tube (3) is arranged at the center in the outer Venturi tube (1); and six to twelve surrounding Venturi tubes (2) are arranged on the periphery of the center Venturi tube (3). According to the Venturi structure, through adding the Venturi tubes, the flowing speed of flue gas is increased, even distribution of the flowing flue gas at the upper parts of the Venturi tubes is guaranteed, the flue gas cannot be deflected, the desulfurization effect is guaranteed, gas-solid fluidization is strengthened, the stability of a bed layer of the fluidized bed is ensured, and ash falling phenomena at the tower bottom are reduced. The Venturi structure further has the characteristic of simple implementation structure.
Description
Technical field
The utility model relates to a kind of device that is used for the circulating fluid bed semi-drying method desulfurization, particularly a kind of Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower.
Background technology
Circulating fluidized bed desulfur is a kind of desulfur technology that is used for the boiler tail flue gas desulfurization.Boiler smoke gets into from the desulfurizing tower bottom;, venturi gets into the bed body after integrating air-flow; Near venturi outlet, in bed, spray into desulfurizing agent and an amount of atomized water through the high pressure reflow nozzle, in the uphill process in desulfurizing tower with flue gas in thinization thing react the formation desulfurization.At present, conventional venturi adopts a big Venturi tube, in establish 6 with little Venturi tube because little Venturi tube negligible amounts, the interior flue gas flow field speed of venturi is slower, it is comparatively inhomogeneous to distribute, and bias current may take place, and influences desulfurized effect.
The utility model content
The purpose of the utility model is, a kind of Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower is provided.The utlity model has and to promote flue gas flow field speed, guarantee that the flue gas smoothness is evenly distributed, and bias current does not take place, guarantee desulfurized effect.
The technical scheme of the utility model: a kind of Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower; Comprise outer Venturi tube; It is characterized in that: the center in the described outer Venturi tube is provided with the center Venturi tube, is provided with 6～12 around the Venturi tube of center and surrounds Venturi tube.
The aforesaid Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower, the diameter≤4000mm of said outer Venturi tube, described center venturi diameter equates with the encirclement venturi diameter, and the encirclement Venturi tube is 6.
The aforesaid Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower, the diameter＞4000mm of said outer Venturi tube, described center venturi diameter=(1～1.5) * encirclement venturi diameter, and the encirclement Venturi tube is 6～12.
Compared with prior art, the utility model passes through to increase Venturi tube, thereby has promoted the smooth speed of flue gas; The flue gas flow field that guarantees Venturi tube top is evenly distributed; And bias current does not take place, guarantee desulfurized effect, also effectively strengthened gas-solid fluidized; Guarantee that the fluid bed bed is stable, fall grey phenomenon at the bottom of the minimizing tower.The utility model also has the enforcement characteristic of simple structure.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The outer Venturi tube of being labeled as in the accompanying drawing: 1-, 2-surrounds Venturi tube, 3-center Venturi tube.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.A kind of Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower; Constitute as shown in Figure 1; Comprise outer Venturi tube 1, it is characterized in that: the center in the described outer Venturi tube 1 is provided with center Venturi tube 3, is provided with 6～12 around the center Venturi tube 3 and surrounds Venturi tube 2.
Diameter≤the 4000mm of Venturi tube 1 outside said, described center Venturi tube 3 diameters with surround Venturi tube 2 equal diameters, and to surround Venturi tube 2 be 6.
Or as the diameter＞4000mm of said outer Venturi tube 1, Venturi tube 3 diameters=(1～1.5), described center * encirclement Venturi tube 2 diameters, and encirclement Venturi tube 2 is 6～12.
The utility model passes through to increase Venturi tube, thereby has promoted the smooth speed of flue gas, guarantees that the flue gas flow field on Venturi tube top is evenly distributed; And bias current does not take place, guarantee desulfurized effect, also effectively strengthened gas-solid fluidized; Guarantee that the fluid bed bed is stable, fall grey phenomenon at the bottom of the minimizing tower.The utility model also has the enforcement characteristic of simple structure.
Claims (3)
1. Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower; Comprise outer Venturi tube (1); It is characterized in that: the center in the described outer Venturi tube (1) is provided with center Venturi tube (3), and center Venturi tube (3) is provided with 6～12 on every side and surrounds Venturi tube (2).
2. the Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower according to claim 1; It is characterized in that: the diameter≤4000mm of said outer Venturi tube (1); Described center Venturi tube (3) diameter and encirclement Venturi tube (2) equal diameters, and encirclement Venturi tube (2) is 6.
3. the Venturi tube structure that is used for the circulating fluid bed semi-drying method desulfurizing tower according to claim 1; It is characterized in that: the diameter＞4000mm of said outer Venturi tube (1); Described center Venturi tube (3) diameter=(1～1.5) * encirclement Venturi tube (2) diameter, and encirclement Venturi tube (2) is 6～12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201312168U CN202516465U (en) | 2012-03-30 | 2012-03-30 | Venturi structure for semi-dry desulfurization tower of circulating fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201312168U CN202516465U (en) | 2012-03-30 | 2012-03-30 | Venturi structure for semi-dry desulfurization tower of circulating fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202516465U true CN202516465U (en) | 2012-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201312168U Expired - Lifetime CN202516465U (en) | 2012-03-30 | 2012-03-30 | Venturi structure for semi-dry desulfurization tower of circulating fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202516465U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107308803A (en) * | 2017-08-16 | 2017-11-03 | 华能白山煤矸石发电有限公司 | A kind of circulating fluidized bed desulfurization tower and control method |
| CN114011216A (en) * | 2021-11-02 | 2022-02-08 | 山鹰国际控股股份公司 | CFB semi-dry desulfurization system |
| CN114699906A (en) * | 2022-03-16 | 2022-07-05 | 国能(山东)能源环境有限公司 | Stable venturi device for semidry desulfurization and evaluation model |
-
2012
- 2012-03-30 CN CN2012201312168U patent/CN202516465U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107308803A (en) * | 2017-08-16 | 2017-11-03 | 华能白山煤矸石发电有限公司 | A kind of circulating fluidized bed desulfurization tower and control method |
| CN114011216A (en) * | 2021-11-02 | 2022-02-08 | 山鹰国际控股股份公司 | CFB semi-dry desulfurization system |
| CN114699906A (en) * | 2022-03-16 | 2022-07-05 | 国能(山东)能源环境有限公司 | Stable venturi device for semidry desulfurization and evaluation model |
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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: 20121107 |
|
| CX01 | Expiry of patent term |