CN103447180B - Wet process of FGD water-drop-shaped slurries shower - Google Patents
Wet process of FGD water-drop-shaped slurries shower Download PDFInfo
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- CN103447180B CN103447180B CN201310411193.5A CN201310411193A CN103447180B CN 103447180 B CN103447180 B CN 103447180B CN 201310411193 A CN201310411193 A CN 201310411193A CN 103447180 B CN103447180 B CN 103447180B
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Abstract
The invention discloses a kind of wet method fume desulfurizing system lime stone slurry shower, including slurries supervisor and be responsible for, with these slurries, the arm being connected, it is characterised in that: the cross section of described slurries supervisor becomes drops；The cross section of described arm is circular, and the arm being connected to described slurries supervisor's sustained height forms individual layer slurries pipe network, and this individual layer slurries pipe network is vein shape；Slurries supervisor is hollow housing, and its exhibition is to straight, identical with the absorption tower tower diameter of desulphurization system.Compared with traditional circular cross-section slurries supervisor, particularly when caliber is bigger, reasonably the design of drops streamlined cross-section can make slurry pipe better adapt to and fit flue gas flow field, vortex can be reduced, reduce pressure drag, improve the flue gas stream uniformity, and then improve desulfuration efficiency and the operational reliability of system entirety.
Description
Technical field
The present invention relates to the spray system of a kind of wet method fume desulfurizing system sodalime stone slurries, specifically a kind of slurries spray
Shower pipe, belongs to environmental protection equipment applied technical field.
Background technology
Wet desulfurization of flue gas by limestone-gypsum method technology is that technology achievement the most ripe, practical is most the most in the world, runs
The most stable of sulfur removal technology of situation, is also the most a kind of desulfurization technology of Chinese large-sized coal fired power plant operational performance.
Absorption tower and internals thereof are one of most critical equipment in desulphurization system.For spray absorption tower, lime stone
The appropriate design of slurries spraying layer is extremely important.Spraying layer is made up of shower and nozzle, and lime stone slurry is by shower
Distributional effects reaches equally distributed nozzle, is then sprayed by nozzle, is fully contacted with the flue gas of reverse flow, and sulfur dioxide is dirty
Dye gas is i.e. absorbed at this.It is wrong that the slurries supervisor in lime stone slurry spray district (generally 2～4 floor spray) mostly is order up and down
Angle is arranged.For the desulfurizer of 300MW unit, the diameter of slurries supervisor is typically at about 1m.The slurries master of major diameter
Pipe can make to form recirculating zone on a large scale downstream, and in this region, flue gas flow rate is low, and in swirl shape, result in crushing and increase, speed
Degree field inhomogeneities increases.It addition, the space arranged in view of pipeline and circulating pump in engineering and difficulty, adjacent two layers spray is main
The stagger angle of pipe arranges less, and generally about 20 °, the vertical spacing of two-layer shower is usually l～2m(typically by 1.5
～1.7m meter), this influence area that adjacent spray is responsible for is the most overlapping, and then makes crushing increase further, also increases simultaneously
The strong unevenness of smoke distribution, hinders gas-liquid uniformly to mix, ultimately results in desulfuration efficiency and reduce, directly affects wet method cigarette
The performance parameter of desulfurization system and operational reliability.
Summary of the invention
For solving the problems referred to above, the present invention devises a kind of efficient, wet process of FGD water-drop-shaped slurries spray of low-resistance
Pipe.
Technical scheme:
A kind of wet method fume desulfurizing system lime stone slurry shower, is connected including slurries supervisor and with these slurries supervisor
Arm, it is characterised in that: the cross section of described slurries supervisor becomes drops, drops slurries supervisor's leading edge point, edge in first
Point, the coordinate of edge point and trailing edge point is respectively (x in secondA,yA)、(xB1,yB1)、(xB2,yB2) and (xC,yC), wherein:
Edge point leading edge molded line of edge point in leading edge point is to second in first is describedFunctionCan table
It is shown as:
Wherein,
In first, edge point is to the trailing edge molded line of trailing edge pointWith the trailing edge molded line of edge point in trailing edge o'clock to second's
FunctionWithIt is represented by:
Wherein, a and b is constant coefficient.
The cross section of described arm is circular, and the arm being connected to described slurries supervisor's sustained height forms individual layer slurry pipe
Net, this individual layer slurries pipe network is vein shape.
Slurries supervisor is hollow housing, and its exhibition is to straight, identical with the absorption tower tower diameter of desulphurization system.
Wet process of FGD spray absorption tower of the present invention, arranges 3 layers of slurries spraying layer in absorption tower.Each spraying layer slurries
Supervisor is the hollow housing that drops cross section molded line is constituted, and slurries supervisor's exhibition is to straight, same with absorption tower tower diameter.Each layer slurries
Supervisor's order alternate angle arrangement, alternate angle is at about 20 °.Adjacent spraying layer vertical spacing is at about 2m.With propping up that slurries supervisor is connected
Pipe uses pipe, and individual layer slurries pipe network is vein shape.
Beneficial effect:
Compared with traditional circular cross-section slurries supervisor, particularly when caliber is bigger, rational drops streamlined is cut
Slurry pipe can be made to better adapt to for face design and flue gas flow field of fitting (Fig. 4 gives circular section and water-drop-shaped cross section and outflows flue gas
The contrast schematic diagram in flow field), its rear vortex district can be reduced, reduce pressure drag, improve the flue gas stream uniformity, and then improve
Desulfuration efficiency and the operational reliability of system entirety.
Accompanying drawing explanation
Fig. 1 absorption tower and slurries spraying layer schematic diagram；
Fig. 2 slurries supervisor arranges schematic diagram, wherein, is respectively three spraying layer cross sections from the bottom to top shown in a, b and c；
Fig. 3 slurries supervisor's water-drop-shaped schematic cross-section；
Fig. 4 circular section contrasts schematic diagram with outflow flow field, water-drop-shaped cross section, and wherein a is circular section flow process distribution schematic diagram, b
For water-drop-shaped cross section of the present invention Flow Field outside distribution schematic diagram.
Wherein: 1 spray absorption tower schematic diagram；2 smoke inlets；3 exhanst gas outlets；4 circulating pump schematic diagrames (41,42 and 43
The circulating pump of the most corresponding three layers of different spraying layer from the bottom to top)；5 slurries supervisor schematic diagrames (51,52 the most corresponding with 53 by
Under supreme three different slurries supervisor).α is the stagger angle of adjacent two layers slurries supervisor.
A leading edge point；(B1 and B2 is respectively in first edge point in edge point and second, and namely the left and right sides is corresponding for edge point in B
Middle edge point)；C trailing edge point；D leading edge molded line(E1 and E2 is respectively left and right two to E water-drop-shaped cross section trailing edge molded line
The trailing edge molded line that side is correspondingWithF circular section trailing edge molded line.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.As a example by the wet method fume desulfurizing system of 300MW unit.Inhale
Receive tower and slurries supervisor's layout is shown in Fig. 1 and Fig. 2.3 layers of slurries spraying layer are set in absorption tower.Each spraying layer slurries supervisor is water
The hollow housing that drop-wise cross section molded line is constituted, is shown in Fig. 3.Slurries supervisor's exhibition is to straight, same with absorption tower tower diameter.Each layer slurries are responsible for
Order alternate angle arrangement up and down, alternate angle is 20 °.Adjacent spraying layer vertical spacing is 2m.The arm being connected with slurries supervisor uses circle
Pipe, individual layer slurries pipe network is vein shape, enables lime stone slurry completely to cover horizontal cross-section, absorption tower.
Under x-y coordinate system, set up the mathematical description of water-drop-shaped cross section molded line, see Fig. 3.Water-drop-shaped slurries supervisor's leading edge
The coordinate of point, middle edge point and trailing edge point is respectively (xA,yA)、(xB1,yB1)、(xB2,yB2) and (xC,yC).Leading edge molded line is describedFunctionIt is represented by:
Wherein, Trailing edge molded lineWithFunctionWithIt is represented by:
Wherein, a and b is constant coefficient.
As a example by the wet method fume desulfurizing system of 300MW unit, the diameter about 1m of traditional circular section slurries supervisor, now change
Type is designed as water-drop-shaped slurries supervisor.Water-drop-shaped slurries supervisor's leading edge point, the coordinate of middle edge point and trailing edge point be respectively (0 ,-
0.5), (-0.5,0), (0.5,0) and (0,0.8).R is 0.5m.Leading edge molded line is describedFunctionCan table
It is shown as:
Trailing edge molded lineWithFunctionWithIt is represented by:
Water-drop-shaped slurries supervisor's Cross section Design scheme, can reduce the vortex at its rear portion, reduce pressure drag, and improve
The flue gas stream uniformity, and then improve desulfuration efficiency and system overall operation efficiency.
Claims (3)
1. a wet method fume desulfurizing system lime stone slurry shower, is connected including slurries supervisor and with these slurries supervisor
Arm, it is characterised in that: the cross section of described slurries supervisor becomes drops, drops slurries supervisor's leading edge point, edge point in first,
In second, the coordinate of edge point and trailing edge point is respectively (xA,yA)、(xB1,yB1)、(xB2,yB2) and (xC,yC), wherein:
Edge point leading edge molded line of edge point in leading edge point is to second in first is describedFunctionCan represent
For:
Wherein,
In first, edge point is to the trailing edge molded line of trailing edge pointWith the trailing edge molded line of edge point in trailing edge o'clock to secondFunctionWithIt is represented by:
Wherein, a and b is constant coefficient.
Wet method fume desulfurizing system lime stone slurry shower the most according to claim 1, it is characterised in that: described arm
Cross section be circular, the arm being connected to described slurries supervisor's sustained height forms individual layer slurries pipe network, this individual layer slurries pipe network
In vein shape.
Wet method fume desulfurizing system lime stone slurry shower the most according to claim 1, it is characterised in that: slurries are responsible for
For hollow housing, its exhibition is to straight, identical with the absorption tower tower diameter of desulphurization system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310411193.5A CN103447180B (en) | 2013-09-10 | 2013-09-10 | Wet process of FGD water-drop-shaped slurries shower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310411193.5A CN103447180B (en) | 2013-09-10 | 2013-09-10 | Wet process of FGD water-drop-shaped slurries shower |
Publications (2)
| Publication Number | Publication Date |
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| CN103447180A CN103447180A (en) | 2013-12-18 |
| CN103447180B true CN103447180B (en) | 2016-08-31 |
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| CN201310411193.5A Active CN103447180B (en) | 2013-09-10 | 2013-09-10 | Wet process of FGD water-drop-shaped slurries shower |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121989A (en) * | 2019-12-05 | 2020-05-08 | 合肥通用机械研究院有限公司 | Fluid detection device |
| CN112870960A (en) * | 2021-03-19 | 2021-06-01 | 中国华电科工集团有限公司 | Ammonia spraying device and flue gas denitration device |
| CN114849436A (en) * | 2022-04-28 | 2022-08-05 | 中国华电科工集团有限公司 | Low-resistance energy-saving wet desulphurization slurry spraying system and desulphurization, dehumidification and integration tower |
| CN114788995A (en) * | 2022-04-28 | 2022-07-26 | 中国华电科工集团有限公司 | Low-resistance energy-saving slurry spraying system for wet desulphurization and desulfurizing tower |
| CN114797409A (en) * | 2022-04-28 | 2022-07-29 | 中国华电科工集团有限公司 | Slurry spraying system for wet desulphurization and integrative tower of wet desulphurization and chimney |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174206A (en) * | 1971-01-25 | 1979-11-13 | Nfe International Ltd. | Apparatus for separating particulate material from an airstream |
| CN1593727A (en) * | 2004-07-16 | 2005-03-16 | 孙克勤 | Nervure shaped sera shower pipe system |
| CN1864811A (en) * | 2006-04-10 | 2006-11-22 | 广州市天赐三和环保工程有限公司 | Fume desulfurizing process employing multiple circulation and stable double alkali method and apparatus |
| CN201145504Y (en) * | 2007-12-25 | 2008-11-05 | 重庆天瑞化工设备股份有限公司 | Heat exchange tube with special cross-section |
| CN102309916A (en) * | 2011-09-28 | 2012-01-11 | 重庆大鼎鼓风机有限公司 | Bead-collecting fogging desulfuration and dust collect tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202155113U (en) * | 2011-07-13 | 2012-03-07 | 上海瑞亚安环保设备有限公司 | V-shaped water drop simulation type defogger and defogging device |
-
2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174206A (en) * | 1971-01-25 | 1979-11-13 | Nfe International Ltd. | Apparatus for separating particulate material from an airstream |
| CN1593727A (en) * | 2004-07-16 | 2005-03-16 | 孙克勤 | Nervure shaped sera shower pipe system |
| CN1864811A (en) * | 2006-04-10 | 2006-11-22 | 广州市天赐三和环保工程有限公司 | Fume desulfurizing process employing multiple circulation and stable double alkali method and apparatus |
| CN201145504Y (en) * | 2007-12-25 | 2008-11-05 | 重庆天瑞化工设备股份有限公司 | Heat exchange tube with special cross-section |
| CN102309916A (en) * | 2011-09-28 | 2012-01-11 | 重庆大鼎鼓风机有限公司 | Bead-collecting fogging desulfuration and dust collect tower |
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| CN103447180A (en) | 2013-12-18 |
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Owner name: CHINA CONSTRUCTION POWER AND ENVIRONMENT ENGINEERI Free format text: FORMER OWNER: NANJING NO.7425 FACTORY OF ZHONGCHE GROUP Effective date: 20140121 |
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Effective date of registration: 20140121 Address after: Dong Village Road, Jiangning Development Zone, Nanjing City, Jiangsu Province, No. 87 210008 Applicant after: GCL ENGINEERING LIMITED Address before: Dong Village Road, Jiangning Development Zone, Nanjing City, Jiangsu Province, No. 87 210008 Applicant before: Nanjing No.7425 Factory of Zhongche Group |
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