CN202506281U - After-wet-desulphurization chimney outlet droplet recovering device - Google Patents
After-wet-desulphurization chimney outlet droplet recovering device Download PDFInfo
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- CN202506281U CN202506281U CN2012200306653U CN201220030665U CN202506281U CN 202506281 U CN202506281 U CN 202506281U CN 2012200306653 U CN2012200306653 U CN 2012200306653U CN 201220030665 U CN201220030665 U CN 201220030665U CN 202506281 U CN202506281 U CN 202506281U
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- chimney
- acid solution
- internal cylinder
- drop
- discharger
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Abstract
The utility model discloses an after-wet-desulphurization chimney outlet droplet recovering device which comprises a chimney inner tube, a chimney outer tube and a main smoke flue connected between the chimney inner tube and the chimney outer tube. The after-wet-desulphurization chimney outlet droplet recovering device is characterized by further comprising an acid liquor discharging device, wherein the acid liquor discharging device comprises a secondary acid liquor discharging device arranged on the lower portion of the chimney inner tube and a primary acid liquor discharging device arranged on the lower portion of the secondary acid liquor discharging device, and the primary acid liquor discharging device penetrates through the wall of the chimney inner tube to be connected with the main smoke flue. The after-wet-desulphurization chimney outlet droplet recovering device is simple in structure and convenient to install, solves the problem of smoke droplet carrying at the outlet of a chimney by means of the reasonable droplet recovering device design, improves collecting efficiency of the acid liquor, reduces the number of the droplets carried by the smoke, improves operation condition in the chimney and is efficient and energy-saving.
Description
Technical field
The utility model relates to the coal-fired station's flue gas processing device in the power industry, refers to it is a kind of wet desulphurization after funnel outlet drop retracting device particularly.
Background technology
When the flue gas flow rate in the chimney internal cylinder reaches certain speed, can carry the drop and the solid granulates that freeze-out in the flue gas and move in the same way; When flue gas flow rate is low, drop and solid granulates will drop and can not carried by flue gas, and critical speed point wherein is called secondary and carries critical speed." EPRI-Electric Power Research Institute (EPRI) wet chimney design guide rule " according to the difference of chimney wall surface material, studied its secondary and carried critical speed, provided the advisory speed of different materials chimney on this basis.About the recovery of condensing water droplet in the chimney, this guide rule has also provided the basic processing principle, but this guide rule has only provided principle qualitatively, does not have concrete engineering construction scheme, have with a certain distance from concrete the application, and the part principle is unreasonable.Domestic newly-built coal-burning power plant sulfur removal technology generally adopts limestone/gypsum method technology at present, and is not equipped with GGH (flue gas-flue gas heat exchange device), and the flue gas that get into chimney this moment is a saturated flue gas, and the chimney of configuration is claimed conventional be " wet chimney ".The a large amount of outlet drops that exist of " the wet chimney " of domestic operation carry phenomenon, and promptly the flue gas of chimney breast has drop, and the chimney periphery has been caused environmental hazard, is to have increased contaminants associated discharging in essence; Simultaneously, be with corrosive drop as if dropping down and flow to no corrosion-resistant chimney outer wall, also influence the security of chimney.
Summary of the invention
The purpose of the utility model is exactly that a kind of simple in structure, easy for installation, energy-efficient wet desulphurization after funnel outlet drop retracting device will be provided.
For realizing above-mentioned purpose; The utility model wet desulphurization after funnel outlet drop retracting device; Comprise chimney internal cylinder, chimney urceolus; With the flue collector that is connected chimney internal cylinder and chimney urceolus; Its special character is also to comprise the acid solution discharger, and said acid solution discharger comprises second level acid solution discharger that is arranged on the chimney internal cylinder bottom and the first order acid solution discharger that is arranged on acid solution discharger bottom, the said second level, and the barrel that said first order acid solution discharger passes chimney internal cylinder is connected with said flue collector.
As preferred version, said second level acid solution discharger comprises the annular collecting tank and the acid solution discharge pipe that is connected with said annular sump bottom that is provided with along chimney internal cylinder tube wall circumference; Said first order acid solution discharger comprises the water conservancy diversion base plate and the discharge pipe that is positioned at said flue collector bottom that is inclination alpha with said flue collector.
Further, said inclination alpha value is 30～45 °; Said acid solution discharge pipe is along chimney internal cylinder wall circle distribution; Said acid solution discharge pipe evenly distributes 2～4 along chimney internal cylinder wall circumference.
Further, the material of said chimney internal cylinder adopts the composite titanium steel plate.
The material of chimney internal cylinder preferably adopts the composite titanium steel plate in the utility model, and this is because " wet chimney " middle corrosivity is stronger on the one hand; Secondly, the secondary of different materials carries the critical speed difference, and with respect to materials such as acidproof brick, acid resistant adhesive mortars, it is higher that the secondary of steel plate carries critical speed, and steel plate materials is easier to realize the cylindrical shell contraction structure simultaneously.
On chimney inlet smokestack top hydrops groove (being second level acid solution discharger) is set in the utility model and collects acid solution; Can reduce the quantity that flue gas carries drop effectively; Simultaneously because the chimney wall is the main region that drop is separated out; The drop that condenses in a large number reclaims through collecting tank (being second level acid solution discharger), avoids its deflector that drops down onto chimney bottom and discharge pipe (being first order acid solution discharger) to collect, and also greatly reduces the discharge pipe possibility of jamming.
The advantage of the utility model is: the utility model carries problem through the flue gas drop that rational drop retracting device design solves chimney breast.The chimney internal cylinder two-stage acid solution discharger that the utility model designed improves the collection efficiency of acid solution, the quantity that the reduction flue gas carries drop, improves the operating condition in the chimney.
Description of drawings
Fig. 1 is the structural representation of the utility model
Fig. 2 is the A-A sketch map of Fig. 1
Fig. 3 is the local enlarged diagram of the utility model
Among the figure: 1. chimney urceolus, 2. chimney internal cylinder, 3. slurries pond, 4. flue collector; 5. acid solution discharger, 51. first order acid solution dischargers, 511. water conservancy diversion base plates, 512. discharge pipes; 52. second level acid solution discharger, 521. annular collecting tanks, 522. acid solution discharge pipes.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to describe in detail.
Wet desulphurization after funnel outlet drop retracting device shown in the figure; Comprise chimney internal cylinder 2, chimney urceolus 1; With the flue collector 4 that is connected chimney internal cylinder 2 and chimney urceolus 1; Also comprise acid solution discharger 5, acid solution discharger 5 comprises second level acid solution discharger 52 that is arranged on chimney internal cylinder 2 bottoms and the first order acid solution discharger 51 that is arranged on acid solution discharger 52 bottoms, the second level, and the barrel that first order acid solution discharger 51 passes chimney internal cylinder 2 is connected with flue collector 4; Second level acid solution discharger 52 comprises the annular collecting tank 521 and the acid solution discharge pipe 522 that is connected with annular collecting tank 521 bottoms that is provided with along chimney internal cylinder 2 tube wall circumference; Acid solution in the acid solution discharge pipe 522 flows in the slurries pond 3 in the front end wet desulfurizing process device, and first order acid solution discharger 51 comprises the water conservancy diversion base plate 511 and the discharge pipe 512 that is positioned at flue collector 4 bottoms that is inclination alpha with flue collector 4; The inclination alpha value is 30～45 °; Acid solution discharge pipe 522 is along chimney internal cylinder 2 wall circle distribution; Acid solution discharge pipe 522 evenly distributes 2～4 along chimney internal cylinder 2 wall circumference; The material of chimney internal cylinder 2 adopts the composite titanium steel plate.
The utility model drop retracting device adopts two-stage drop retracting device, and drop is reclaimed in classification.
First order drop retracting device (first order acid solution discharger): flue gas gets into chimney internal cylinder after chimney bottom turns to 90 °; Under the effect of centrifugal force and inertia force; The drop of part larger particles is at first separated down in chimney bottom; Flue gas separatory in the middle part of up process drops under the gravity effect and returns chimney bottom; Therefore the water conservancy diversion base plate of aspect flue collector is set at the flue collector backplane interface absolute altitude place of chimney internal cylinder, and the stream of liquid droplets that the water conservancy diversion base plate is collected is in flue collector, and finally the discharge pipe through the flue collector bottom reclaims drop.Chimney bottom water conservancy diversion base plate (flat board) inclination alpha value is 30～45 °, and the acid solution of systematic collection drains into desulfuration absorbing tower or set of regions puddle, absorption tower, and all parts that contact with flue gas of chimney internal cylinder all adopt titanium plate joint strip sealing welding in the utility model.
Second level drop retracting device (second level acid solution discharger): theory analysis and engineering practice all show, when velocity of flue gas was lower than secondary and carries critical speed, the drop that condenses was mainly dirty along chimney wall.In order effectively to reclaim the drop in the chimney, an annular collecting tank is set, and the acid solution discharge pipe through sump bottom will reclaim liquid and be connected in the slurries pond of wet desulfurization system and go above the horizontal flue access port.
The operation principle of the utility model: saturated wet flue gas is that gas-liquid two-phase flows after the desulfurization; And contain partial desulfurization reducing agent slurries drop; Flue gas behind the absorption tower is when flowing through flue; Passed through initial gross separation in flue turning and reducing place, the isolated drop of institute is collected through a discharge pipe (being first order acid solution discharger).After flue gas gets into chimney; Vertically up in chimney bottom through 90 ° of elbows; Under the effect of inertia force, through separate, through deflector and the discharge pipe (be first order acid solution discharger) of chimney bottom collect once more by isolated bulky grain drop for part bulky grain drop.The drop of fine particle continues up with flue gas, in the uphill process of fine particle drop with flue gas, flue gas is because the adiabatic expansion temperature descends on the one hand, because there is radiation loss in chimney, flue-gas temperature descends along the chimney elevation gradually on the other hand.Because the chimney wall is the minimum zone of temperature in the same cross section of chimney; Main droplets agglomerate forms and compiles at inner wall of stack and flows downward; The liquid film of inner wall of stack formation is simultaneously also caught the drop that carries in the partial fume, and this part drop is discharged (being second level acid solution discharger) by the collecting tank on flue entrance top; The flue gas at chimney middle part also can be separated out drop along with temperature descends, and less drop also can fall from the chimney middle part after in air-flow, colliding, aggregate into big drop, and this part drop is also collected through discharge pipe (being first order acid solution discharger).
The purpose that chimney internal cylinder is provided with two-stage drop retracting device is the collection efficiency of raising acid solution, the quantity that the reduction flue gas carries drop, improves the operating condition in the chimney.Only when chimney bottom is provided with the drop retracting device (be conventional only be provided with one-level drop retracting device); (the interface cross section of chimney internal cylinder and flue when the inner wall of stack liquid film comes downwards to chimney inlet smokestack; Be referred to as chimney inlet smokestack); Because liquid film falls from smokestack, former established liquid film will be split into fine drop at the smokestack place, and most of fine drop will be carried by flue gas again; Therefore on chimney inlet smokestack top hydrops groove (being second level acid solution discharger) is set and collects acid solution, can reduce the quantity that flue gas carries drop effectively.Simultaneously because the chimney wall is the main region that drop is separated out; The drop that condenses in a large number reclaims through collecting tank (being second level acid solution discharger); Avoid its deflector that drops down onto chimney bottom and discharge pipe (being first order acid solution discharger) to collect; Also greatly reduce discharge pipe possibility of jamming (according to investigation, the flue acid solution discharge pipe of a lot of engineerings stops up owing to slurries, dust in the drop gather).
Claims (6)
1. a wet desulphurization after funnel exports the drop retracting device; Comprise chimney internal cylinder (2), chimney urceolus (1); With the flue collector (4) that is connected chimney internal cylinder (2) and chimney urceolus (1); It is characterized in that also comprising acid solution discharger (5); Said acid solution discharger (5) comprises the second level acid solution discharger (52) that is arranged on chimney internal cylinder (2) bottom and is arranged on the first order acid solution discharger (51) of said second level acid solution discharger (52) bottom that the barrel that said first order acid solution discharger (51) passes chimney internal cylinder (2) is connected with said flue collector (4).
2. wet desulphurization after funnel outlet drop retracting device according to claim 1 is characterized in that: said second level acid solution discharger (52) comprises the annular collecting tank (521) and the acid solution discharge pipe (522) that is connected with said annular collecting tank (521) bottom that is provided with along chimney internal cylinder (2) tube wall circumference; Said first order acid solution discharger (51) comprises the discharge pipe (512) that is the water conservancy diversion base plate (511) of inclination alpha with said flue collector (4) and is positioned at said flue collector (4) bottom.
3. wet desulphurization after funnel outlet drop retracting device according to claim 2, it is characterized in that: said inclination alpha value is 30～45 °.
4. wet desulphurization after funnel outlet drop retracting device according to claim 2 is characterized in that said acid solution discharge pipe (522) is along chimney internal cylinder (2) wall circle distribution.
5. according to claim 2 or 5 described wet desulphurization after funnel outlet drop retracting devices, it is characterized in that said acid solution discharge pipe (522) evenly distributes 2～4 along chimney internal cylinder (2) wall circumference.
6. according to the arbitrary described wet desulphurization after funnel outlet drop retracting device of claim 1 to 4, it is characterized in that the material of said chimney internal cylinder (2) adopts the composite titanium steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200306653U CN202506281U (en) | 2012-01-31 | 2012-01-31 | After-wet-desulphurization chimney outlet droplet recovering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200306653U CN202506281U (en) | 2012-01-31 | 2012-01-31 | After-wet-desulphurization chimney outlet droplet recovering device |
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| Publication Number | Publication Date |
|---|---|
| CN202506281U true CN202506281U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200306653U Expired - Fee Related CN202506281U (en) | 2012-01-31 | 2012-01-31 | After-wet-desulphurization chimney outlet droplet recovering device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764028A (en) * | 2015-04-03 | 2015-07-08 | 中国能源建设集团山西省电力勘测设计院有限公司 | System for directly discharging acid liquor in single-cylinder chimney including high-position gas flue |
-
2012
- 2012-01-31 CN CN2012200306653U patent/CN202506281U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764028A (en) * | 2015-04-03 | 2015-07-08 | 中国能源建设集团山西省电力勘测设计院有限公司 | System for directly discharging acid liquor in single-cylinder chimney including high-position gas flue |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTI Free format text: FORMER OWNER: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP COR Effective date: 20150513 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150513 Address after: 430071 Wuchang District, Hubei, South Central Road No. two, No. 12, No. Patentee after: Co., Ltd of Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Corporation Address before: 430071 No. 668, democracy Road, Wuchang District, Hubei, Wuhan Patentee before: Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Cor |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20170131 |