CN1389287A - Guide float valve tray - Google Patents
Guide float valve tray Download PDFInfo
- Publication number
- CN1389287A CN1389287A CN02112748.4A CN02112748A CN1389287A CN 1389287 A CN1389287 A CN 1389287A CN 02112748 A CN02112748 A CN 02112748A CN 1389287 A CN1389287 A CN 1389287A
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- CN
- China
- Prior art keywords
- valve
- guide
- float
- plate
- float valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 claims abstract description 29
- 230000004907 flux Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- FBBDOOHMGLLEGJ-UHFFFAOYSA-N methane;hydrochloride Chemical compound C.Cl FBBDOOHMGLLEGJ-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Float Valves (AREA)
Abstract
The present invention relates to a guide float valve plate which comprises a guide float valve which is a symmetrical quadrangular guide float valve, its valve cover is a quadrangular from with symmetrical diagonal liens, the included angle of long edges is directed against overflow weir, under the valve cover more than three valve legs are mouthed, front valve leg length is longer than rear valve leg length, so that when the float value is completely opened, between valve cover and valve hole plate an included angle toward overflow weir is opened, said included angle is 2-10 deg, and on the valve cover can be mounted the guide hole and guide plate. Said invention can effectively reduce liquid level gradient on the plate, raise plate flux, raise mass transfer efficiency and reduce resistance of plate.
Description
One, technical field
The present invention relates to fractionating column, particularly relate to a kind of valve tower.
Two, background technology
Valve plate has that production capacity is big, operating flexibility is big, the plate efficiency advantages of higher, is one of template that is most widely used.What at present, industrial valve plate was commonly used is F1 type float valve.A weak point of this float valve is, the liquid flow of column plate is not had guide effect, causes on the plate gradient of liquid level big, and liquid dispersion is serious, and mass-transfer efficiency is impaired.In addition, because its design feature is relative with the contact area of liquid phase less from the gas phase that valve block rises down, so also limited the performance of its separative efficiency.For this reason, people have done multiple improvement to it, develop guide float-valve, trapezoidal float valve, combined type float valve, Type B guide float-valve etc.These novel float valves mainly contain following feature:
Guide float-valve is to drive 1-2 pilot hole on the rectangle valve block, from the gas of this pilot hole ejection liquid had certain impetus, but because the aperture of pilot hole is limited, air-flow mainly sprays from the valve block both sides, its direction and flow direction angle are 90 °, its guiding motive force is very little, and guide effect is not obvious, especially for big liquid flowing strength;
Trapezoidal float valve is the novel float valve that a kind of rectangle valve block with guide float-valve changes trapezoidal valve block into, its short end, is towards the downflow weir direction, make the liquid main flow direction is constituted on the air-flow that blows out from the valve block both sides and the column plate angle less than 90 °, liquid is had very big impetus, be applicable to big liquid flowing strength.Shortcoming is, when current rate is big, because motive force is excessive, forms negative gradient of liquid level easily, influences the operating characteristics of column plate;
Combined type float valve column plate need assemble rectangle and trapezoidal two kinds of different float valves on column plate, increased the consumption of difficulty of processing and material;
The Type B guide float-valve is on the basis of aforementioned float valve, it is long to design a kind of preceding valve leg, the structure of back valve short legs, after float valve is opened entirely, on liquid flow direction, valve gap and valve hole plate horizontal plane form an elevation angle, thereby can promote liquid on the column plate flows forward except the gas from the pilot hole ejection, also produce a component forward from float valve both sides effluent air, liquid flow is produced bigger motive force.This float valve is one of best guide float-valve of present performance, but it also has weak point, be that valve block is the disk valve leg foremost, as a baffle plate, make that gas can not be from valve block foremost with the direction ejection same with liquid stream, the impetus of gas is not brought into play fully under the valve block, and has dwindled the discharge area that gas passes through, and makes anode drop bigger.
Three, summary of the invention
It is steady to the purpose of this invention is to provide on a kind of column plate liquid flow, and gradient of liquid level is little, the valve tower column plate that plate pressure drop is little.
The objective of the invention is that logical following technical scheme realizes:
A kind of guide float valve tray, it mainly is made up of valve hole plate, downspout, downflow weir and symmetrical quadrangle guide float-valve, it is the quadrangle of symmetry with the diagonal that described symmetrical quadrangle guide float-valve valve gap is one, the angle on long limit points to downflow weir, there is to be no less than three valve legs the long h of preceding valve leg under the valve gap
1Greater than the long h of back valve leg
2, can h
1=12-50mm, h
2=5-40mm when making the float valve standard-sized sheet, opens an angle theta towards downflow weir between valve gap and the valve hole plate, ∠ θ=2-10 °.The long limit of valve gap l length can be chosen in the scope of 50-200mm, and long limit angle α=20-50 °, β=45-70 ° of minor face angle.
The quadrangle drift angle of above-mentioned symmetrical quadrangle guide float-valve valve gap can be circular arc, makes whole valve gap be streamlined along the liquid flow path direction.Arc radius relief angle R wherein
1=10-45mm, anterior angle R
3=3-15mm, side angle R
2=30-80mm.
Can have pilot hole on the above-mentioned symmetrical quadrangle guide float-valve valve gap, pilot hole can be polygon, rectangle, triangle, trapezoidal or ligulate, it can be one, also can be a plurality of, guide plate is arranged on the pilot hole, guide plate can be to be fixed on the valve gap, also can float, and the guiding of guide plate is consistent with the liquid stream flow direction on the column plate.
Above-mentioned guide float valve tray, float valve can be fork row on column plate, also can be in-line arrangement (seeing accompanying drawing 4).Blow out air-flow in adjacent two float valves when adopting fork row, the liquid between adjacent two valves is pushed easily, gradient of liquid level is less, and bubbling is even, so to adopt fork to arrange to well.
Symmetrical quadrangle guide float-valve of the present invention can be made with various metal materials, in case of necessity can also with metal material and nonmetallic materials are compound makes, to satisfy the needs of different operating mode occasions.
Adopt guide float valve tray of the present invention, valve gap is designed to fusiform symmetrical quadrilateral structure, for the first half of valve gap, is acute angle between two of valve gap long limits ejection air-flow and the liquid flow path direction, can be to forward the impetus of having flowed of liquid; And the latter half of valve gap is therefore less to the reverse impetus of liquid because two limits are shorter.The end valve leg is longer than back end valve leg before the valve gap simultaneously, when making the valve gap standard-sized sheet, be an acute angle between valve gap and the valve hole plate horizontal plane, so for the liquid flow path direction, throughput in the same way is greater than the inverted draft amount with it, whole structure is to promote liquid to travel forward, and eliminates the gradient of liquid level on the plate face effectively.The tetragonal girth of symmetry is under the condition with homalographic, and longer than rectangle, trapezoidal or circular girth, it is bigger therefore gas passage to be exported, and has improved flux effectively, has improved the mass transfer contact area, has improved mass-transfer efficiency; Under the situation of same treatment amount, the gas phase flow velocity is descended, thereby has reduced the resistance of column plate.Valve gap of the present invention corner is streamlined circular arc, reduces the resistance to liquid flow, helps eliminating eddy current and back-mixing, improves plate efficiency.
Four, description of drawings
Fig. 1 is the vertical view of guide float-valve of the present invention;
Front view when Fig. 2 is in standard-sized sheet for guide float-valve of the present invention on valve hole plate;
Fig. 3 is the stereogram of guide float-valve of the present invention;
Fig. 4 is the arrangement mode of guide float-valve of the present invention on the column plate, and a is the in-line arrangement mode; B is fork row mode.
1 is valve gap among the figure; 2 is guide plate; 3 is leg; 4 is back end valve leg; 5 is preceding end valve leg; 6 is the valve pin; 7 is valve hole plate; 8 is pilot hole; α is an anterior angle; β is a relief angle; R
1Radius for float valve relief angle place streamline circular arc; R
2Radius for float valve edge streamline circular arc; R
3Radius for float valve anterior angle place streamline circular arc; B is the valve gap width; b
1A/F for pilot hole; D is the open height of pilot hole; h
1Length for preceding end valve leg; h
2Length for back end valve leg; L is the length of valve block front end side AD; S is a valve centre-to-centre spacing; T is the distance between float valve row and row; γ is two waists of pilot hole open front place isosceles triangle and the angle on base; Angle when θ is the valve block standard-sized sheet between valve gap and the valve hole plate horizontal plane.
Five, specific embodiment
Embodiment 1
Expoxy propane-crystal heats up in a steamer system, adopt symmetrical quadrangle guide float valve tray of the present invention to transform former F1 type valve plate, tower diameter φ 1200mm, the number of plates is 50, distance between plates is 450mm, and material is a stainless steel, and float valve adopts the fork row mode shown in Fig. 4 b, valve centre-to-centre spacing S=220mm, float valve row with arrange between apart from t=150mm.Lead symmetrical quadrangle float valve shown in Fig. 1,2 and 3, long its length l=70mm of limit AD of symmetrical quadrangle guide float-valve valve gap 1, anterior angle α=35 °, relief angle β=60 °, the radius of four drift angle circular arcs is respectively R
1=30mm, R
2=50mm, R
3=10mm has a pilot hole 8 on the valve gap 1, pilot hole 8 is a pentagon, it be shaped as an isosceles triangle and a rectangle combines, angle γ=15 on isosceles triangle two waists and base °, the width b of pilot hole
1=0.6b, b are the valve gap Breadth Maximum.Be fixed with guide plate 2 on the pilot hole 8, the height d=2mm of guide plate 2 has 3 legs on the valve gap 1, is on two long limits respectively and the relief angle place, and its length and width are 5mm, slightly are bent downwardly, and valve gap 1 can drawing.Valve gap 1 has three valve legs, and three valve legs lay respectively at anterior angle place and two side angle places, preceding end valve leg 5 long h
1=40mm, back end valve leg 4 long h
2=30mm, valve pin 6 and preceding end valve leg 5 and back end valve leg 4 are connected, and its function is to guarantee can not come off from valve opening after float valve is installed on valve hole plate 7, and three valve legs can be put and be welded in valve gap 1 bottom, and valve gap 1 is laid into behind the valve hole plate 7 again with 6 bendings of valve pin.Adopt the treating capacity behind the valve plate of the present invention to improve 14.7% than former F1 type valve tray, the purity of overhead propylene oxide rises to 99.95% from 99.6%, and energy consumption descends 2%.
Embodiment 2
Methane chloride quenching column, treating capacity are 20000t/a, and tower diameter is φ 1800mm, former tower is a sieve-plate tower, and distance between plates is 500mm, and percent opening is 12%, the number of plates is 12, adopts guide float valve tray of the present invention owing to heat-transfer effect is undesirable, and its concrete structure parameter is: distance between plates 500mm, percent opening 12%, tower diameter is constant, and the number of plates is constant, the long l=60mm of the AD of float valve valve gap 1, anterior angle α=30 °, relief angle β=57 °, R
1, R
2, R
3Be respectively 25,45,8mm, γ=10 °, b
1=0.5b, preceding end valve leg 5 long h
1=38mm, the long h of back end valve leg
2=25mm, operating result show, cat head vapor phase exit temperature drops to 106 ℃ from original 125 ℃, and operating flexibility became 2.4: 1 by original 1.8: 1 and can normally move.In addition, full tower pressure drop is by original 793mmH
2O drops to 640mmH
2O (under the 20000t/a load).
Claims (7)
1. guide float valve tray, it comprises guide float-valve, it is characterized in that guide float-valve is symmetrical quadrangle guide float-valve, it is the quadrangle of symmetry with the diagonal that its valve gap (1) is one, the angle on long limit points to downflow weir, has to be no less than three valve legs the long h of preceding end valve leg (5) under the valve gap (1)
1Greater than the long h of back end valve leg (4)
2, when making the float valve standard-sized sheet, open an angle theta towards downflow weir between valve gap (1) and the valve hole plate (7), ∠ θ=2-10 °.
2. guide float valve tray according to claim 1 is characterized in that its symmetrical quadrangle guide float-valve valve gap (1) quadrangle drift angle is a circular arc, makes whole valve gap (1) be streamlined along the liquid flow path direction.
3. guiding according to claim 1 and 2 is floated column plate, it is characterized in that on float valve valve gap (1), having pilot hole (8), pilot hole (8) is polygon, rectangle, triangle, trapezoidal or ligulate, guide plate (2) is arranged on the pilot hole (8), guide plate (2) is that fix or unsteady, and the guiding of guide plate (2) is consistent with the liquid stream flow direction on the column plate.
4. guide float valve tray according to claim 1 and 2 is characterized in that float valve arranges by equilateral triangle or isosceles triangle on column plate, adopt in-line arrangement or fork row.
5. guide float valve tray according to claim 3 is characterized in that float valve arranges by equilateral triangle or isosceles triangle on column plate, adopt in-line arrangement or fork row.
6. guide float valve tray according to claim 4 is characterized in that float valve preferably arranges with fork row on column plate.
7. guide float valve tray according to claim 5 is characterized in that float valve preferably arranges with fork row on column plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021127484A CN1155430C (en) | 2002-03-12 | 2002-03-12 | Guide float valve tray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021127484A CN1155430C (en) | 2002-03-12 | 2002-03-12 | Guide float valve tray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1389287A true CN1389287A (en) | 2003-01-08 |
| CN1155430C CN1155430C (en) | 2004-06-30 |
Family
ID=4742222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021127484A Expired - Fee Related CN1155430C (en) | 2002-03-12 | 2002-03-12 | Guide float valve tray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1155430C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006007783A1 (en) * | 2004-07-19 | 2006-01-26 | Nanjing University | A parent-subsidary guide float valve |
| CN102698455A (en) * | 2012-06-06 | 2012-10-03 | 深圳市诚达科技股份有限公司 | Hexagonal floating valve and method for controlling steam-liquid exchange of tower plate |
| CN103537109A (en) * | 2012-07-10 | 2014-01-29 | 北京先锋创新科技发展有限公司 | Composite sieve-float column plate with pneumatic pushing hole |
| CN107520596A (en) * | 2017-09-27 | 2017-12-29 | 长沙博能科技股份有限公司 | A kind of Round float valve pneumatically installs clamp |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335148C (en) * | 2005-09-07 | 2007-09-05 | 南京大学 | Float valve fixing column plate |
-
2002
- 2002-03-12 CN CNB021127484A patent/CN1155430C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006007783A1 (en) * | 2004-07-19 | 2006-01-26 | Nanjing University | A parent-subsidary guide float valve |
| EP1785176A1 (en) * | 2004-07-19 | 2007-05-16 | Nanjing University | A parent-subsidary guide float valve |
| EP1785176A4 (en) * | 2004-07-19 | 2009-07-22 | Nanjing University | A parent-subsidary guide float valve |
| US8006716B2 (en) | 2004-07-19 | 2011-08-30 | Nanjing Universtiy | Parent-subsidiary guide float valve |
| CN102698455A (en) * | 2012-06-06 | 2012-10-03 | 深圳市诚达科技股份有限公司 | Hexagonal floating valve and method for controlling steam-liquid exchange of tower plate |
| CN102698455B (en) * | 2012-06-06 | 2014-03-05 | 深圳市诚达科技股份有限公司 | Hexagonal floating valve and method for controlling steam-liquid exchange of tower plate |
| CN103537109A (en) * | 2012-07-10 | 2014-01-29 | 北京先锋创新科技发展有限公司 | Composite sieve-float column plate with pneumatic pushing hole |
| CN107520596A (en) * | 2017-09-27 | 2017-12-29 | 长沙博能科技股份有限公司 | A kind of Round float valve pneumatically installs clamp |
| CN107520596B (en) * | 2017-09-27 | 2019-05-21 | 长沙博能科技股份有限公司 | A kind of Round float valve pneumatically installs clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1155430C (en) | 2004-06-30 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040630 Termination date: 20140312 |