CN2732336Y - Venturi device and water film deduster employing the device - Google Patents
Venturi device and water film deduster employing the device Download PDFInfo
- Publication number
- CN2732336Y CN2732336Y CN 200420068886 CN200420068886U CN2732336Y CN 2732336 Y CN2732336 Y CN 2732336Y CN 200420068886 CN200420068886 CN 200420068886 CN 200420068886 U CN200420068886 U CN 200420068886U CN 2732336 Y CN2732336 Y CN 2732336Y
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- CN
- China
- Prior art keywords
- venturi
- flue gas
- water
- dust
- water film
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Abstract
The utility model discloses a venturi device and a water film deduster employing the device. The venturi device comprises a contracted section and a diffusing section. The contracted section and the diffusing section are respectively provided with a feedwater nozzle. The feedwater nozzle is arranged in the wall of the device. The water film deduster is a cylinder. The lower part of the water film deduster is connected with the tangent line of the venturi device of the utility model. The middle part is provided with a dust cleaning device on which an overflow groove is arranged. The upper part of the overflow groove is provided with a spiral flow system flue gas dehydration device. The upper part of the cylinder is provided with a flue gas outlet. A rectifier device is arranged in the uptake shaft of the flue gas outlet. The venturi device can strengthen the mixed effect of water and flue gas, can thicken the smoke granule, can enhance dust collection efficiency, can prevent the feedwater nozzle from being damaged because of the friction of the flue gas with dust and the feedwater nozzle, can guarantee the normal feedwater and operation, and can avoid the ash clogging phenomenon. Compared with the existing device, the water film deduster has higher dehydration and dust collection efficiency and the operation is very stable and reliable.
Description
Technical field
The utility model belongs to Industrial Boiler smoke gas treatment equipment, particularly relates to a kind of water dust scrubber that is used for the Venturi of thermal power plant smoke abatement and dust control and adopts this device.
Background technology
At present, the following generating set boiler flue gas purification of Power Plant in China 5MW and 5MW adopts the Venturi dedusting to add the wet dedusting technology of dewater unit dehydration basically, is extensive use of water dust scrubber.Continuous decline along with coal-fired ature of coal, coal-fired grey powder content constantly increases, boiler is discharged dust contained flue gas concentration and is increased, and the environmental emission standard improves constantly, in the production, existing Venturi only is provided with water supply nozzle at contraction section, water supply nozzle is arranged in the flue gas flow channels, is easy to wearing and tearing, can't guarantee the normal water supply of Venturi basically, thereby cause the Venturi can not stable operation, efficiency of dust collection is low, and stifled ash is serious, also makes the dewater unit load strengthen, dehydration, efficiency of dust collection all is difficult to guarantee, cause equipment resistance to increase, outlet dust contained flue gas concentration height, the pipeline dust stratification is serious, fan vibration has a strong impact on boiler and normally moves.
Technology contents
The purpose of this utility model provides a kind of water dust scrubber that can prevent the Venturi that water supply nozzle weares and teares, water supply is stable, efficiency of dust collection is high and adopt this Venturi, this water dust scrubber has dehydration and efficiency of dust collection preferably, stable and reliable operation.
In order to realize the foregoing invention purpose, the technical solution adopted in the utility model is: Venturi comprises contraction section and diffuser, is provided with water supply nozzle at contraction section and diffuser, and water supply nozzle is arranged in the device wall; Water dust scrubber is a cylindrical shell, the bottom links to each other with the utility model Venturi tangent line, the middle part is provided with dust arrester, overflow launder is arranged on it, be provided with the spiral-flow type smoke dewatering device on overflow launder top, the top of cylindrical shell is flue gas discharge opening, is provided with fairing in the uptake flue of flue gas discharge opening.
In the technique scheme, because the contraction section and the diffuser of Venturi all are provided with water supply nozzle, and water supply nozzle is arranged in the device wall, not on the flue gas flow channels, both realized the air water mixed effect, increase thick soot dust granule, improve efficiency of dust collection, avoid ash-laden gas and water supply nozzle friction again and damaged, guaranteed normal water supply and operation, prevented the generation of clogging phenomenon.Because water dust scrubber has adopted described Venturi, the moisture flue gas that enters the deduster cylindrical shell is stable, and soot dust granule increases slightly in the flue gas, is easier to be removed in the cylindrical shell bottom.Dust arrester is used to eliminate water dust scrubber " dried post ", further again wetting increasing slightly is removed when making all the other tiny grits through dust arrester, band shredded tobacco for water pipes gas after the dedusting is dewatered by the spiral-flow type smoke dewatering device, fairing in the exhanst gas outlet flue, can prevent that flue gas from producing eddy current, further reduce flue gas with water, reduce flue gas resistance.The utility model water dust scrubber is compared with conventional device has higher dedusting and dewatering efficiency, moves very reliable and stable.Its basic mechanical design feature comparable situation sees the following form:
| The contrast content | Existing equipment | The utility model |
| Efficiency of dust collection (%) | ＜90 | ＞98 |
| Water consumption (liquid-gas ratio kg/Nm 3) | 0.5-1.5 | 0.7-1.5 |
| Resistance drop (Pa) | ＞2500 | 1500-2500 |
| The venturi blockage | Seriously | No clogging |
| The Venturi nozzle wear condition | Seriously | There are not wearing and tearing |
| Air-introduced machine dust stratification shock conditions | The dust stratification vibrations | No dust stratification, shockproof |
| The equipment cleaning situation | Cleaning is frequent | Need not cleaning |
Describe the technical solution of the utility model in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the profile of the utility model Venturi.
Fig. 2 is the utility model water dust scrubber structural representation.
The specific embodiment
The utility model Venturi is seen Fig. 1, and Venturi 1 comprises contraction section 103, diffuser 101, is equipped with water supply nozzle 102 at the wall inner rim of contraction section 103, diffuser 101.The structure of the utility model water dust scrubber is seen Fig. 2, water dust scrubber is a cylindrical shell 2, cylindrical shell 2 bottoms link to each other with the utility model Venturi 1 tangent line, the middle part is provided with dust arrester 3, overflow launder 4 is arranged on it, be provided with spiral-flow type smoke dewatering device 5 on overflow launder 4 tops, the top of cylindrical shell 2 is flue gas discharge opening 6, is provided with fairing 7 in the uptake flue of flue gas discharge opening 6.
Operation principle of the present utility model: see Fig. 2, after ash-laden gas enters the contraction section 103 of Venturi 1 from the direction of arrow, the liquid that " stealth " nozzle 102 that is provided with periphery ejects enters trunnion, make the drop height atomizing, soot dust granule is moistening, after entering diffuser 101, grit after moistening increases slightly, the globule perikinetic aggregation chap that water smoke and diffuser 101 eject, tangentially enter the cylindrical shell 2 of water dust scrubber together with flue gas, coarse granule promptly is thrown toward barrel in cylindrical shell 2 bottoms, when thin dirt rises on cylindrical shell 2 centers with flue gas, contact, make that thin dirt is further moistening to be increased slightly with the dust arrester 3 that is installed in cylindrical shell 2 middle parts, and got rid of to barrel by the air-flow that continuous rotation is risen, at the bottom of sinking to tin.After band shredded tobacco for water pipes gas rises to overflow launder 4 tops, enter spiral-flow type smoke dewatering device 5, under the acting in conjunction of collision, baffling and centrifugal force, realize that liquid gas separates, discharge through flue gas exhaust mouth 6, and through fairing 7 rectifications, flue gas is tending towards laminar flow by the eddy flow state, enters chimney by air-introduced machine.
Claims (2)
1, a kind of Venturi comprises contraction section and diffuser, is provided with water supply nozzle on contraction section, it is characterized in that diffuser also is provided with water supply nozzle, and water supply nozzle all is arranged in the device wall.
2, a kind of employing is the water dust scrubber of Venturi according to claim 1, this water dust scrubber is a cylindrical shell, the bottom links to each other with the Venturi tangent line, Venturi comprises contraction section and diffuser, on contraction section, be provided with water supply nozzle, the diffuser that it is characterized in that described Venturi also is provided with water supply nozzle, water supply nozzle all is arranged in the device wall, be provided with dust arrester at water dust scrubber cylindrical shell middle part, overflow launder is arranged on it, be provided with the spiral-flow type smoke dewatering device on overflow launder top, the top of cylindrical shell is flue gas discharge opening, is provided with fairing in the uptake flue of flue gas discharge opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420068886 CN2732336Y (en) | 2004-10-12 | 2004-10-12 | Venturi device and water film deduster employing the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420068886 CN2732336Y (en) | 2004-10-12 | 2004-10-12 | Venturi device and water film deduster employing the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2732336Y true CN2732336Y (en) | 2005-10-12 |
Family
ID=35068183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420068886 Expired - Fee Related CN2732336Y (en) | 2004-10-12 | 2004-10-12 | Venturi device and water film deduster employing the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2732336Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102600687A (en) * | 2012-04-20 | 2012-07-25 | 沈幼民 | Fast-mounted water film deduster |
| CN104289056A (en) * | 2014-09-23 | 2015-01-21 | 秦皇岛思泰意达科技发展有限公司 | Venturi mist sprayer |
-
2004
- 2004-10-12 CN CN 200420068886 patent/CN2732336Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102600687A (en) * | 2012-04-20 | 2012-07-25 | 沈幼民 | Fast-mounted water film deduster |
| CN104289056A (en) * | 2014-09-23 | 2015-01-21 | 秦皇岛思泰意达科技发展有限公司 | Venturi mist sprayer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Hunan Bida Science and Trade Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Wu Ping Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051012 Termination date: 20101012 |