CN103170212A - Foam breaker - Google Patents
Foam breaker Download PDFInfo
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- CN103170212A CN103170212A CN2013100900528A CN201310090052A CN103170212A CN 103170212 A CN103170212 A CN 103170212A CN 2013100900528 A CN2013100900528 A CN 2013100900528A CN 201310090052 A CN201310090052 A CN 201310090052A CN 103170212 A CN103170212 A CN 103170212A
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- froth breaker
- liquid collecting
- cylindrical shell
- collecting bucket
- foam breaker
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Abstract
The invention discloses a foam breaker which comprises a foam breaker barrel, wherein a Venturi tube bundle consisting of multiple Venturi tubes which are arranged in parallel is fixedly arranged in the foam breaker barrel; each Venturi tube comprises a throat tube and a flaring diffusion section which is communicated with the upper end of the throat tube and of which the inner diameter is gradually enlarged in the radial direction; a spraying pipe is fixedly arranged on the inner wall of the foam breaker barrel relative to the end of the flaring diffusion section; the lower edge of an umbrella-shaped water curtain sprayed from each umbrella-shaped spraying head is positioned outside the flaring diffusion section; a liquid collecting hopper is arranged between the upper and lower ends of the Venturi tubes positioned in the foam breaker barrel; the inner cavity of the foam breaker barrel is divided into an upper cavity and a lower cavity through the liquid collecting hopper; the lower end of the liquid collecting hopper is provided with a drainage pipe; and an outlet of the drainage pipe is arranged outside the foam breaker barrel. The foam breaker has the advantages that air bubbles formed after wet-process flue gas dust removal desulfuration can be eliminated, and the entrainment generated by the broken air bubbles is eliminated, so that the phenomenon that white smoke or trailing occurs in the chimney is reduced.
Description
Technical field
The invention belongs to flue gas froth breaking technology, specifically refer to a kind of froth breaker that is applicable to the mechanisms such as tower flue after wet flue gas dedusting or desulfurization or chimney.
Background technology
The recent domestic environmental requirement is more and more higher, various furnace flue gas, petrochemical industry tail gas must be after dust-removal and desulfurizing qualified discharge.At present, the technique of wet dedusting desulfurization is still a kind of reliable main flow technique, yet, after at present the wet dedusting desulfurizations such as lime method commonly used, limestone-based process, soda method, two alkaline process, ammonia process, amine process, magnesium oxide method are processed, the flue gases of discharging contain wet or to contain foam higher, and Mao Baiyan and conditions of streaking are serious.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming and defect of prior art existence, and provide a kind of froth breaker, this froth breaker can be eliminated the bubble that forms after wet method flue gas dust-removing desulfurizing, and eliminates the mist that breaks and produce because of bubble, emits white cigarette or conditions of streaking to occur thereby reduce chimney.
for achieving the above object, technical scheme of the present invention is to include the froth breaker cylindrical shell, be fixedly installed the venturi tube bank that is formed by the many Venturi tubes that are arranged in juxtaposition in described froth breaker cylindrical shell, each Venturi tube includes the internal diameter diminishing contraction section that makes progress, trunnion and be communicated in the trunnion upper end and diffuser that internal diameter upwards enlarges gradually, on the inwall of described froth breaker cylindrical shell, the upper end of relative diffusion section is fixedly installed shower, the below of this shower is connected with the quantity umbrella spray head corresponding with diffuser with the position, the lower edge of the umbrella water curtain of the ejection of each umbrella spray head is positioned at outside the diffuser upper end, be provided with up and down liquid collecting bucket between two ends in the venturi tube bank in described froth breaker cylindrical shell, this liquid collecting bucket seals adaptive with the inwall of froth breaker cylindrical shell mutually, and this liquid collecting bucket is separated into epicoele and cavity of resorption with the inner chamber of froth breaker cylindrical shell, the lower end of described liquid collecting bucket is provided with drainage tube, the outlet of this drainage tube is arranged at outside the froth breaker cylindrical shell.
The status analysis of flue gas institute's bubbles by froth breaker time when the present invention is used for froth breaking:
A. about bubble shape: if bubble do not break, venturi conveyor front barrel place in froth breaker, bubble shape is circular; Entering the forward and backward and trunnion of venturi contraction section place, flow velocity increases rapidly, and bubble shape is elongated oval shape; After entering the venturi diffuser, until venturi rear cylinder body place in froth breaker, bubble shape is flat elliptic.The bubble shape variation can impel the bubble elimination of breaking.
B. about the suffered pressure of bubble: keep the homeostasis rule according to momentum, the suffered pressure of bubble and its flow velocity are inversely proportional to, and when bubble passed through the venturi front and back, the first fast reducing of pressure went up rapidly again.The bubble pressure change causes Air Bubble Size to change, and can impel the bubble elimination of breaking.
C. about the suffered acceleration of bubble: according to the energy conservation law, because gas is different from separately proportion of bubble, at one time, same node, when pressure change is identical, suffered acceleration is different separately.(acceleration has positive and negative dividing, and is respectively accelerate and slow down.) the suffered acceleration change of bubble, can make gas and steep separately that movement velocity changes, can impel the bubble elimination of breaking.
D. about bubble pattern of flow of living in: be laminar flow when the froth breaker cylindrical shell; Be turbulent flow when Venturi throat and diffuser.During the turbulent flow state, Reynolds number is high, forms disorderly, irregular Turbulent Flow Field, between liquid, fierce collision can occur, and can impel the bubble elimination of breaking.
Froth breaking principle of the present invention: the flue gas of bubbles after the wet scrubbing dust-removal and desulfurizing, during by froth breaker, above-mentioned flow of flue gas state variation has occured, because bubble on microcosmic can produce variation such as shape, suffered pressure, acceleration and pattern of flow, all breaking of bubble eliminated the effective effect of having played.
by this setting, the present invention is installed on after wet flue gas dedusting or desulfurization on the device such as tower flue or chimney, flue gas enters Venturi tube from the lower end of Venturi tube, at first, flue gas is when passing the trunnion position, because the flue gas sectional area diminishes, flue gas is compressed at the trunnion place, make bubble compressive failure in flue gas, thereby eliminated bubble, then flue gas continues to rise, enter into diffuser, the mist that makes bubble break to produce is spread, then flue gas is gone out from the upper end of Venturi tube, at this moment, the umbrella water curtain of umbrella spray head ejection cleans the mist in flue gas, make that in flue gas, bubble and mist are eliminated, thereby, the present invention is had reduce the effect that chimney emits white cigarette or conditions of streaking to occur.
In addition, the present invention is separated into epicoele and cavity of resorption by liquid collecting bucket is set with the inner chamber of froth breaker cylindrical shell, this liquid collecting bucket not only plays the flue effect that intercepts, make flue gas to pass through from Venturi tube, realize defoaming effect, and this liquid collecting bucket also plays the water of collecting the ejection of umbrella spray head, realizes that water circuit uses.
During by froth breaker, due to the obstruct of liquid collecting bucket, it is forward and backward that this flue gas enters contraction section, and flow velocity increases rapidly, reaches maximum when entering trunnion, and at diffuser, flow velocity reduces rapidly, and pressure gos up.
Further arranging is that described liquid collecting bucket is the pyramidal structure of upward opening.The length of described contraction section is less than the length of trunnion and diffuser.By this setting, the liquid collecting bucket of pyramidal structure and shorter contraction section length can make the compression ratio that enters Venturi tube of flue gas increase, and have improved defoaming effect.
The outlet that further setting is described drainage tube consists of circulation with the import of shower and is connected.By this setting, make the water of shower ejection be circulated, improve the utilization rate of water, and reduce costs.
Be installed with axillare on the inwall that further setting is described froth breaker cylindrical shell, be fixedly installed the liquid collecting bucket bracing frame on axillare, described liquid collecting bucket is supported and fixed on the liquid collecting bucket bracing frame.
Further arranging is to be provided with access hole on the outer wall with respect to the position, top and bottom of Venturi tube of described froth breaker cylindrical shell, and on this access hole, sealing is fixedly installed the access hole cover plate.By this setting, convenient maintenance and installation.
Further setting is that the air velocity of the cavity of resorption of described froth breaker cylindrical shell is 2.0-3.0m/s, the air velocity of described trunnion: 50-70m/s; The air velocity in described diffuser exit: 10-13m/s.By this setting, flue gas defoaming effect in front is ideal in practice.
Further arranging is that described many Venturi tubes are evenly distributed.This quantity and caliber that described Venturi tube is set is done corresponding design according to the difference of processing tolerance, process tolerance higher, the froth breaker barrel diameter is larger, and in froth breaker, venturi tube bank quantity is just more, by this, being evenly distributed of venturi tube bank, supporting ﹠ stablizing are set.
In sum, advantage of the present invention is to eliminate the bubble that forms after wet method flue gas dust-removing desulfurizing, and eliminates the mist that breaks and produce because of bubble, emits white cigarette or conditions of streaking to occur thereby reduce chimney.
Below in conjunction with specification drawings and specific embodiments, the present invention is described further.
Description of drawings
Fig. 1 specific embodiment of the invention structural representation;
Fig. 2 is the A-A cutaway view of Fig. 1.
The specific embodiment
Below by embodiment, the present invention is carried out concrete description, only be used for the present invention is further illustrated, can not be interpreted as the restriction to protection domain of the present invention.
the specific embodiment of the present invention as shown in Fig. 1-2, include froth breaker cylindrical shell 1, be fixedly installed the venturi tube bank that is formed by the many Venturi tubes that are arranged in juxtaposition 2 in described froth breaker cylindrical shell 1, each Venturi tube 2 includes the internal diameter diminishing contraction section 24 that makes progress, trunnion 21 and be communicated in trunnion 21 upper ends and diffuser 22 that internal diameter upwards enlarges gradually, on the inwall of described froth breaker cylindrical shell 1, the upper end of relative diffusion section is fixedly installed shower 3, the below of this shower 3 is connected with the quantity umbrella spray head 4 corresponding with diffuser with the position, the lower edge 411 of the umbrella water curtain 41 of the ejection of each umbrella spray head 4 is positioned at outside diffuser 22 upper ends 221, be provided with up and down liquid collecting bucket 5 between two ends in Venturi tube in described froth breaker cylindrical shell 1, this liquid collecting bucket 5 seals adaptive with the inwall of froth breaker cylindrical shell 1 mutually, and this liquid collecting bucket 5 is separated into epicoele and cavity of resorption with the inner chamber of froth breaker cylindrical shell, make flue gas to pass through from Venturi tube 2, the lower end of described liquid collecting bucket 5 is provided with drainage tube 51, the outlet 511 of this drainage tube is arranged at outside the froth breaker cylindrical shell, in order to improve the utilization rate of water, the outlet 511 of described drainage tube 51 consists of circulation with the import of shower 3 31 and is connected.This liquid collecting bucket 5 of the present embodiment is the pyramidal structure of opening upwards, and this Venturi tube can adopt flange to be connected with the connected mode of liquid collecting bucket or other connected modes such as welding are fixed.
In addition, be installed with axillare 11 on the inwall of the described froth breaker cylindrical shell 1 of the present embodiment, be fixedly installed liquid collecting bucket bracing frame 12 on axillare 11, described liquid collecting bucket 5 is supported and fixed on liquid collecting bucket bracing frame 12.In addition, be provided with access hole 13 on the outer wall with respect to the position, top and bottom of Venturi tube of described froth breaker cylindrical shell 1, on this access hole 13, sealing is fixedly installed the access hole cover plate.
The quantity of the described Venturi tube 2 of the present embodiment is preferably 6, and these 6 Venturi tubes are 6 limit shapes and distribute, and supports being provided with Venturi tube connection fixture 23 between these many Venturi tubes 2.
In addition, the air velocity of the cavity of resorption of the described froth breaker cylindrical shell of the present embodiment is 2.0-3.0m/s, the air velocity of described trunnion: 50-70m/s; The air velocity in described diffuser exit: 10-13m/s.
In addition, also can be provided with overflow and the balance mouth of pipe on the present embodiment froth breaker cylindrical shell 1, to control water level and steady operation.
Claims (7)
1. froth breaker, it is characterized in that: include the froth breaker cylindrical shell, be fixedly installed the venturi tube bank that is formed by the many Venturi tubes that are arranged in juxtaposition in described froth breaker cylindrical shell, each Venturi tube includes the internal diameter diminishing contraction section that makes progress, trunnion and be communicated in the trunnion upper end and diffuser that internal diameter upwards enlarges gradually, on the inwall of described froth breaker cylindrical shell, the upper end of relative diffusion section is fixedly installed shower, the below of this shower is connected with the quantity umbrella spray head corresponding with diffuser with the position, the lower edge of the umbrella water curtain of the ejection of each umbrella spray head is positioned at outside the diffuser upper end, be provided with up and down liquid collecting bucket between two ends in the venturi tube bank in described froth breaker cylindrical shell, this liquid collecting bucket seals adaptive with the inwall of froth breaker cylindrical shell mutually, and this liquid collecting bucket is separated into epicoele and cavity of resorption with the inner chamber of froth breaker cylindrical shell, the lower end of described liquid collecting bucket is provided with drainage tube, the outlet of this drainage tube is arranged at outside the froth breaker cylindrical shell.
2. a kind of froth breaker according to claim 1, it is characterized in that: described liquid collecting bucket is the pyramidal structure of upward opening.
3. a kind of froth breaker according to claim 1, it is characterized in that: the length of described contraction section is less than the length of trunnion and diffuser.
4. a kind of froth breaker according to claim 1 is characterized in that: the outlet of described drainage tube consists of circulation with the import of shower and is connected.
5. according to claim 1 and 2 or 3 or 4 described a kind of froth breakers, it is characterized in that: be installed with axillare on the inwall of described froth breaker cylindrical shell, be fixedly installed the liquid collecting bucket bracing frame on axillare, described liquid collecting bucket is supported and fixed on the liquid collecting bucket bracing frame.
6. a kind of froth breaker according to claim 1, it is characterized in that: the air velocity of described froth breaker cylindrical shell is 2.0-3.0m/s, the air velocity of described trunnion: 50-70m/s; The air velocity in described diffuser exit: 10-13m/s.
7. a kind of froth breaker according to claim 6, it is characterized in that: described many Venturi tubes are evenly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310090052.8A CN103170212B (en) | 2013-03-20 | 2013-03-20 | A kind of froth breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310090052.8A CN103170212B (en) | 2013-03-20 | 2013-03-20 | A kind of froth breaker |
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| Publication Number | Publication Date |
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| CN103170212A true CN103170212A (en) | 2013-06-26 |
| CN103170212B CN103170212B (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310090052.8A Active CN103170212B (en) | 2013-03-20 | 2013-03-20 | A kind of froth breaker |
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| CN (1) | CN103170212B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251296A (en) * | 2015-11-09 | 2016-01-20 | 浙江双屿实业有限公司 | Foam breaker sprayer |
| CN107335255A (en) * | 2017-08-18 | 2017-11-10 | 河北科瑞达仪器科技股份有限公司 | Water route air-vent |
| CN107854945A (en) * | 2017-12-05 | 2018-03-30 | 中国华电科工集团有限公司 | A kind of flue gas purification system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2866786Y (en) * | 2006-03-01 | 2007-02-07 | 新疆石油管理局钻井工艺研究院 | Slot type defoaming device |
| CN201818256U (en) * | 2010-10-27 | 2011-05-04 | 吉林大学 | Annular gap type mechanical defoamer for foam drilling |
| CN202751925U (en) * | 2012-08-20 | 2013-02-27 | 中国石油化工集团公司 | Tower for flue gas cleaning |
| CN203235389U (en) * | 2013-03-20 | 2013-10-16 | 浙江双屿实业有限公司 | Foam breaker |
-
2013
- 2013-03-20 CN CN201310090052.8A patent/CN103170212B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2866786Y (en) * | 2006-03-01 | 2007-02-07 | 新疆石油管理局钻井工艺研究院 | Slot type defoaming device |
| CN201818256U (en) * | 2010-10-27 | 2011-05-04 | 吉林大学 | Annular gap type mechanical defoamer for foam drilling |
| CN202751925U (en) * | 2012-08-20 | 2013-02-27 | 中国石油化工集团公司 | Tower for flue gas cleaning |
| CN203235389U (en) * | 2013-03-20 | 2013-10-16 | 浙江双屿实业有限公司 | Foam breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251296A (en) * | 2015-11-09 | 2016-01-20 | 浙江双屿实业有限公司 | Foam breaker sprayer |
| CN105251296B (en) * | 2015-11-09 | 2017-03-22 | 浙江双屿实业有限公司 | Foam breaker sprayer |
| CN107335255A (en) * | 2017-08-18 | 2017-11-10 | 河北科瑞达仪器科技股份有限公司 | Water route air-vent |
| CN107854945A (en) * | 2017-12-05 | 2018-03-30 | 中国华电科工集团有限公司 | A kind of flue gas purification system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103170212B (en) | 2015-08-12 |
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| C06 | Publication | ||
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| ASS | Succession or assignment of patent right |
Owner name: SINOPEC NINGBO ENGINEERING CO., LTD. Effective date: 20131230 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20131230 Address after: 325000, No. 11, Torch Road, torch garden, Lucheng District, Zhejiang, Wenzhou Applicant after: Zhejiang Shuangyu Industrial Co., Ltd. Applicant after: SINOPEC Ningbo Engineering Company Limited Address before: 325000, No. 11, Torch Road, torch garden, Lucheng District, Zhejiang, Wenzhou Applicant before: Zhejiang Shuangyu Industrial Co., Ltd. |
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Owner name: SINOPEC ENGINEERING ROUP O., LTD. Free format text: FORMER OWNER: ZHEJIANG SHUANGYU INDUSTRIAL CO., LTD. Effective date: 20140430 Owner name: ZHEJIANG SHUANGYU INDUSTRIAL CO., LTD. SINOPEC NIN Free format text: FORMER OWNER: SINOPEC NINGBO ENGINEERING CO., LTD. Effective date: 20140430 |
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| CB03 | Change of inventor or designer information |
Inventor after: Tong Ming Inventor after: Lin Desheng Inventor after: Chen Cuan Inventor after: Wang Huajian Inventor after: Yan Qiwei Inventor after: Wang Hongwei Inventor after: Guo Senrong Inventor after: Wu Junping Inventor after: Zheng Xiuzhong Inventor before: Lin Desheng Inventor before: Wang Huajian Inventor before: Wang Hongwei Inventor before: Wu Junping Inventor before: Zheng Xiuzhong |
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Free format text: CORRECT: ADDRESS; FROM: 325000 WENZHOU, ZHEJIANG PROVINCE TO: 100000 CHAOYANG, BEIJING Free format text: CORRECT: INVENTOR; FROM: LIN DESHENG WANG HUAJIAN WANG HONGWEI WU JUNPING ZHENG XIUZHONG TO: TONG MING LIN DESHENG CHEN XIN WANG HUAJIAN YAN QIWEI WANG HONGWEI GUO SENRONG WU JUNPING ZHENG XIUZHONG |
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Effective date of registration: 20140430 Address after: 100000 Beijing City, Chaoyang District Hui Street No. 6 Applicant after: SINOPEC Engineering (Group) Co., Ltd. Applicant after: Zhejiang Shuangyu Industrial Co., Ltd. Applicant after: SINOPEC Ningbo Engineering Company Limited Address before: 325000, No. 11, Torch Road, torch garden, Lucheng District, Zhejiang, Wenzhou Applicant before: Zhejiang Shuangyu Industrial Co., Ltd. Applicant before: SINOPEC Ningbo Engineering Company Limited |
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