CN1181903C - Three direction guided valve tower tray - Google Patents

Three direction guided valve tower tray Download PDF

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Publication number
CN1181903C
CN1181903C CNB021599289A CN02159928A CN1181903C CN 1181903 C CN1181903 C CN 1181903C CN B021599289 A CNB021599289 A CN B021599289A CN 02159928 A CN02159928 A CN 02159928A CN 1181903 C CN1181903 C CN 1181903C
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valve
leg
row
narrow
liquid
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CN1424125A (en
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潘国昌
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Beijing Zehua Chemical Engineering Co ltd
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BEIJING ZEHUA CHEMICAL ENGINEERING Co Ltd
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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Float Valves (AREA)

Abstract

The present invention provides a three guiding valve tower tray, which related to the technical field of oil refining devices and chemical devices. The present invention is characterized in that floating valves or fixed valves are arranged on a tower plate in a mode that the center connecting lines of each row of valve bodies are parallel to an inlet weir; the spraying direction of tongue holes of a first row of valves close to the inlet weir is parallel to that of the inlet weir; the spraying direction of tongue holes of a second row of valves is reverse to the spraying direction of tongue holes of the first row of valves; the spraying direction of tongue holes of a third row of valves points to the direction of a down-flow pipe. Then, other arrangement follows the mode. Compared with the traditional tower tray, the present invention has the advantages that the tower tray can lead part of air flows ejected from the valves to impel liquid to move towards the direction of the down-flow pipe, also impels the liquid to move towards left and right in a staggered mode, and prevents the liquid from impacting. Thus, the stay time of the liquid on the tower plate is added; the mixture and the exchange of liquid which is perpendicular to the direction of liquid flows are enhanced; the stagnation regions and the return flow regions of the liquid on the tower plate are eliminated; the height of liquid layers sprayed on the tower plate is uniform; liquid foam entrainment is reduced; the upper limit of the air speed of the tower plate is improved. Consequently, the present invention has high efficiency and high productive capacity.

Description

A kind of three guide valve tower trays
Technical field
The present invention relates to a kind ofly to be used for refining oil, the visual plant-tower tray of field distillations such as petrochemical industry, chemical industry, absorption process, particularly a kind of structural design of three guide valve tower trays.
Background technology
In industry such as oil refining, petrochemical industry, chemistry, tower tray is that visual plant, the output to its product, quality, energy consumption, cost of separating mixture etc. plays an important role.At present, domestic and international application tower tray technology the most widely is traditional F1 (V1) type tower tray (as shown in Figure 1), but it can not satisfy requirements such as present volume increase, upgrading, consumption reduction, the problem that this kind tower tray exists has: 1. when improving load, after liquidating, upwards sprays in air-flow between valve opening, make liquid foam entrainment increase decrease in efficiency; Controlled the raising of production capacity; 2. radiation around the gas flow valves increases liquid dispersion, makes decrease in efficiency; 3. liquid is after chord downcomer flows into tower tray, and it is very inhomogeneous to distribute, middle part flow velocity height, and the both sides arcuate segments forms and refluxes and stagnant areas, has reduced plate efficiency; 4. liquid inlet district easy-to-leak liquid, liquid level inequality on the column plate; 5. float valve easily rotates, comes off and has a strong impact on operation on the column plate.Flux and efficient that all this kind all has influence on tower tray have a negative impact to separation process.
In recent years, in order to overcome above shortcoming, the domestic notion that once proposed guide float-valve, it utilizes the kinetic energy of valve body ejection air-flow, directionally promoting liquid moves to the downspout direction, thereby can reduce the height of liquid layer on the column plate, reduce back-mixing, make the column plate performance obtain to a certain degree raising, will make that negative gradient appears in liquid level on the column plate but excessively push away liquid, even under the high gas speed liquid be thrown in the air, liquid time of staying on column plate reduces, decrease in efficiency, and it is little to the inhomogeneities minimizing of liquid flow on the column plate to push away the liquid effect uniformly, so various guide float-valves are few to the flux and the efficient raising of tower tray in the prior art.
Summary of the invention
Problem at the prior art existence, the purpose of this invention is to provide a kind of three guide valve tower trays, this tower tray can make to remove from the part air-flow of valve ejection and promote liquid to the downspout direction is moved, also promote liquid two lateral movements to the left and right alternately and prevent that it from liquidating, the time of staying of liquid on column plate increased, reinforcement is perpendicular to the mixed of liquid on the liquid flow path direction and exchange, eliminate the recirculating zone, reduce liquid foam entrainment, thereby further improves flux, efficient and the production capacity of tower tray.
The present invention is achieved through the following technical solutions: a kind of three guide valve tower trays, it is mainly by column plate, be arranged on circular float valve of many rows or standing valve on the column plate, valve opening, downspout, seal pot and inlet weir are formed, valve face upper punch at described valve has 1～3 tongue hole, it is characterized in that: described many valves on column plate arrangement and arrange as follows: the line of centres of every valve body is all parallel with inlet weir, the tongue hole injection direction of first valve of close inlet weir is consistent and parallel with inlet weir, the tongue hole injection direction of second valve is opposite with first row, the tongue hole injection direction of the 3rd valve points to the downspout direction, the 4th row's tongue hole injection direction is with first row, the 5th row's tongue hole injection direction is with second row, the 6th row's tongue hole injection direction is arranged with the 3rd, then and the like.
Float valve valve face of the present invention is circular, has two perpendicular to valve face and the unequal valve leg of its width; Described valve opening is circular, and respectively there are the wide breach and the narrow breach that are used to place the valve leg in its both sides, and the orientation of the narrow breach on described every valve hole is consistent with the tongue hole injection direction on the pairing float valve.The width of described wide valve leg is 10～12mm, height 10～20mm, and the narrow 5～6mm of width of the wider width valve leg of narrow valve leg, highly high 0～4mm, described narrow valve leg position is consistent with tongue hole injection direction.
Float valve of the present invention also can be provided with 3 valve legs, and a wide valve leg and two equal narrow valve legs promptly are set, and the width of wide valve leg is than two wide 5～10mm of narrow valve leg, highly little 0～5mm; Described wide valve leg position is opposite with tongue hole injection direction on the described float valve; The pairing valve opening of this valve is a garden shape, is provided with two projections that limiting valve rotates on valve opening, and this projection position is consistent with tongue hole injection direction on the described valve face; The arrangement position of described two projections is: the projection position in the first valve hole of close inlet weir points to parallel with the inlet weir direction, the projection position in the second valve hole is put opposite with first ranking, the projection position in the 3rd valve hole points to downspout, the 4th row is with first row, the 5th row is with second row, the 6th row arranges with the 3rd, then and the like.
Valve of the present invention can be a standing valve, the valve body of described standing valve is circular, 1～3 tongue hole is arranged on the valve face, form by the column plate punching out, 2 unequal valve legs of width are arranged on the valve and fix with column plate, the width of wide valve leg is 10～12mm, the narrow 5～6mm of wider width valve leg of narrow valve leg, highly high 0～4mm, the position of described narrow valve leg is consistent with the tongue hole injection direction on the described standing valve.
The said fixing valve also can be provided with 3 valve legs, i.e. a wide valve leg and two equal narrow valve legs, described valve leg and column plate are fixed, and the width of wide valve leg is than two wide 5～6mm of narrow valve leg, highly little 0～4mm, the position at described wide valve leg place is opposite with the tongue hole injection direction on the described standing valve.
The present invention compares with existing tower tray, has the following advantages and the high-lighting progress: 1. increased the time of staying of liquid on column plate, helped improving plate efficiency; 2. strengthened mixed and exchange, made the time of staying of liquid on column plate even perpendicular to liquid on the liquid flow path direction; 3. eliminate the stagnant areas of liquid on the column plate, eliminate the recirculating zone; 4. make height of liquid layer spouted on the column plate even, thereby can reduce liquid foam entrainment, improve the gas speed upper limit of column plate, thereby have greater efficiency and high productive capacity.
Description of drawings
Fig. 1 is traditional F1 float valve stereogram.
Fig. 2 is a liquid distributions schematic diagram on the F1 float valve tray.
Fig. 3 is three guide valve tower tray principle schematic provided by the invention.
Fig. 4 is the arranged figure of valve opening and valve face on the circular float valve tray of three guiding.
Fig. 5 is the structural representation of one embodiment of the present of invention, and promptly float valve has a tongue hole, two valve legs that width does not wait, and respectively there is a breach valve opening both sides.
Fig. 6 is the structural representation of an alternative embodiment of the invention, and float valve has 3 tongue holes, 3 valve legs, and respectively there is a projection valve opening both sides.
Fig. 7 is the valve face of three guiding, 3 leg float valve trays and the arranged figure of valve opening.
Fig. 8 adopts the structural representation of an embodiment of three guide valve tower trays of standing valve for the present invention.
Fig. 9 is the entrainment rate e of three guiding 3 leg float valves (3D-ADV+) and F1 float valve vThe % comparison diagram.
Figure 10 is three guiding, 3 leg float valves (3D-ADV+) and F1 float valve upper limit stressor C bComparison diagram.
Figure 11 is the pressure Δ p comparison diagram of three guide float-valves and F1 tower tray.
Figure 12 is that the oxygen of three guide float-valves and F1 dish is separated the absorptivity comparison diagram.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing.
Fig. 3 is three guide valve tower tray principle schematic provided by the invention, it is mainly by column plate 1, downspout 2, seal pot 3, inlet weir 4, be arranged on the circular float valve of many rows or standing valve 6 and valve opening 5 compositions on the column plate, many valves on column plate 1 arrangement and arrange as follows: the line of centres of every valve body is all parallel with inlet weir 4, the injection direction in the tongue hole of first valve of close inlet weir is consistent and parallel with inlet weir 4, the tongue hole injection direction of second valve is opposite with first row, the tongue hole injection direction of the 3rd valve points to the downspout direction, the 4th row's tongue hole injection direction is with first row, the 5th row is with second row, the 6th row arranges with the 3rd, then and the like.Liquid enters column plate 1 from seal pot 3 through inlet weir (or bubbling promoters) 4, the air-flow that rises with valve opening 5 on column plate contacts and forms bubble level, air-flow promotes liquid (7,8) direction motion to the left and right through the agency part kinetic energy of float valve, it is mobile to downspout 2 directions that other has the part float valve to promote liquid, thereby form three guide valve tower trays.
Fig. 4 is the arranged figure of valve opening and valve face on the circular float valve tray of three guiding, the line of centres of every row's three guide valves is parallel with inlet weir 4 (bubbling promoters) among the figure, along the narrow breach 48 of first row, 51 the valve opening of inlet weir 4 to the right, and narrow breach of the second adjacent with it row 52 left; Correspondingly, the sensing of valve face upper tongue 45 is consistent with narrow breach 48, promptly above two valves push away lead the respectively left and right sides of tower tray of liquid direction, the narrow breach 48 of the 3rd valve 53 points to the direction of downspouts 2, it promotes liquid and flows to downspout 2 directions, all the other and the like.
Fig. 5 is an embodiment of the present invention's three guide float-valves, diameter is that the circular valve face 41 of 25～50mm is provided with a tongue piece 45, the one end links to each other with valve face 41, tongue piece is higher than valve face 1～5mm, the valve body both sides respectively have one, and the width of wide valve leg 42 is 10～12mm perpendicular to valve face and the unequal valve leg 42,43 of width, height 10～20mm, narrow 5～the 6mm of width of the wider width valve leg 42 of narrow valve leg 43, highly high 0～4mm.Valve opening 49 is circular, and respectively there is the breach 47,48 of a placement valve leg valve opening both sides, and gap width is than the wide 1～2mm of valve leg.During installation two valve legs are placed respectively in two breach, 90 ° of narrow valve leg 43 bendings are installed in valve body in the valve opening, and narrow valve leg position should be consistent with tongue hole injection direction; Valve body can fluctuate and can not rotate, and the part air-flow of this float valve will promote liquid and flow to narrow leg 43 directions and flow, promptly air-flow to push away the liquid direction consistent with the direction of small gap 48.
Fig. 6 is the structural representation of an alternative embodiment of the invention, and float valve is provided with 3 tongue holes, 3 valve legs, and respectively there is a projection valve opening both sides.Valve face 61 is circular, and 62, two narrower valve legs 63 of a wide valve leg are arranged, and the width of wherein wide valve leg is than other two the wide 5～10mm of narrow valve leg, highly little 0～5mm.Valve face is provided with three tongue pieces 65 and corresponding tongue hole 64, and described wide valve leg position is opposite with tongue hole injection direction on the described float valve, and tongue piece plays guide functions.Valve opening 68 is circular, and both sides (with narrow valve leg adjacent) respectively has a projection 67, the effect of projection is to place the valve face rotation, and orientation is arranged simultaneously, promptly guarantees the direction unanimity of the tongue piece 65 of every valve.
Fig. 7 is the valve face 61 of above-mentioned three guide float-valve tower trays and the arranged figure of valve opening 68.The position of the projection 67 of first row, 71 valve openings of close inlet weir 4 is consistent and parallel with inlet weir with the tongue hole injection direction on the described float valve, promptly along the direction shown in 74; It is opposite that the projection position in the second valve hole and first ranking are put, promptly along the direction of 75 indications; Direction 76, the four rows that the projection position of the 3rd row 73 valve openings points to downspout 2 arrange with first, and the 5th row is with second row, and the 6th row is the 3rd row together, then and the like.
Fig. 8 adopts the structural representation of an embodiment of three guide valve tower trays of standing valve for the present invention, its valve face 81 is identical with three guide float-valves, 1～3 each tongue piece 85 and tongue hole 84 also arranged, the valve face 81 of this standing valve is to be gone out by column plate itself, 2 unequal valve legs 82,83 of width are arranged on the valve, also be to be gone out by column plate, valve face 81 links together by valve leg 82,83 and column plate 1.The width of wide valve leg is 10～12mm, the narrow 5～6mm of wider width valve leg of narrow valve leg, and highly high 0～4mm, the position of described narrow valve leg is consistent with the tongue hole injection direction on the described standing valve.Air-flow is gone out by valve opening 87, through the effect of tongue piece, valve leg and valve face, also has the part air-flow to promote liquid and flows to tongue hole direction 86.
Standing valve among the present invention also can be provided with 3 each valve leg, i.e. a wide valve leg and two equal narrow valve legs, the width of wide valve leg is than two wide 5～10mm of narrow valve leg, highly little 0～5mm, and the position at described wide valve leg place is opposite with the tongue hole injection direction on the described standing valve.
Embodiment
The test tower of diameter 1.2mm, in three blocks of column plates are arranged, lower floor is a gas distribution grid, the middle level is a breadboard, the upper strata is the liquid foam entrainment collecting board.Breadboard is three guiding 3 leg float valve trays and F1 type float valve trays.Technical parameter is as follows: the wide 200mm of chord downcomer, and downspout accounts for tower section 11%; The long 890mm of exit weir, height of weir 50mm; Three guide float-valve percent openings 17.7%; Air velocity 0.8～3.6m/s; Discharge: 8～112m 3/ h;
Two kinds of tower trays have been carried out contrast test under similarity condition, measured its liquid foam entrainment rate, pressure drop and oxygen desorption efficiency, contrast experiment's data such as Fig. 9, Figure 10, Figure 11 and Figure 12.
By above curve map as can be seen, the production capacity of three guiding, 3 leg float valve trays (is upper limit stressor C b) on average having improved 30%～40% than the F1 float valve tray, pressure drop has on average descended 28%, leaks to have descended 30%, and efficient has on average improved 20%.

Claims (5)

1. guide valve tower tray, it is mainly by column plate (1), be arranged on circular float valve of many rows or standing valve (6) on the column plate, valve opening (5), downspout (2), seal pot (3) and inlet weir (4) are formed, valve face upper punch at described valve has 1～3 tongue hole, it is characterized in that: described many valves on column plate arrangement and arrange as follows: the line of centres of every valve body is all parallel with inlet weir (4), the tongue hole injection direction of first valve of close inlet weir is consistent and parallel with inlet weir, the tongue hole injection direction of second valve is opposite with first row, the tongue hole injection direction of the 3rd valve points to the downspout direction, the 4th row's tongue hole injection direction is with first row, the 5th row's tongue hole injection direction is with second row, the 6th row's tongue hole injection direction is arranged with the 3rd, then and the like.
2. according to the described three guide valve tower trays of claim 1, it is characterized in that: described float valve has two perpendicular to valve face and the unequal valve leg of its width; The width of described wide valve leg is 10～12mm, height 10～20mm, and the narrow 5～6mm of width of the wider width valve leg of narrow valve leg, highly high 0～4mm, described narrow valve leg position is consistent with tongue hole injection direction; Described valve opening is circular, and respectively there are the wide breach and the narrow breach that are used to place this valve leg in its both sides, and the orientation of the narrow breach on described every valve hole is consistent with the tongue hole injection direction on the described float valve.
3. according to the described three guide valve tower trays of claim 1, it is characterized in that: described circular float valve is provided with a wide valve leg and two equal narrow valve legs, and the width of described wide valve leg is than other two the wide 5～6mm of narrow valve leg, highly little 0～4mm; Described wide valve leg position is opposite with tongue hole injection direction on the described float valve; Described valve opening is circular, is provided with two projections that limiting valve rotates on valve opening, and this projection position is consistent with tongue hole injection direction on the described valve face; The arrangement position of described two projections is: the projection position in the first valve hole of close inlet weir points to parallel with the inlet weir direction, the projection position in the second valve hole is put opposite with first ranking, the projection position in the 3rd valve hole points to downspout, the 4th row is with first row, the 5th row is with second row, the 6th row arranges with the 3rd, then and the like.
4. according to the described three guide valve tower trays of claim 1, it is characterized in that: the valve body of described standing valve is to be formed by the column plate punching out, 2 unequal valve legs of width are arranged on the valve and fix with column plate, the width of wide valve leg is 10～12mm, narrow 5～the 6mm of wider width valve leg of narrow valve leg, highly high 0～4mm, the position of described narrow valve leg is consistent with the tongue hole injection direction on the described standing valve.
5. according to the described three guide valve tower trays of claim 1, it is characterized in that: the valve body of described standing valve is to be formed by the column plate punching out, valve is provided with a wide valve leg and two equal narrow valve legs, described valve leg and column plate are fixed, the width of wide valve leg is than two wide 5～10mm of narrow valve leg, highly little 0～5mm, the position at described wide valve leg place is opposite with the tongue hole injection direction on the described standing valve.
CNB021599289A 2002-12-30 2002-12-30 Three direction guided valve tower tray Expired - Lifetime CN1181903C (en)

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Application Number Priority Date Filing Date Title
CNB021599289A CN1181903C (en) 2002-12-30 2002-12-30 Three direction guided valve tower tray

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CN1181903C true CN1181903C (en) 2004-12-29

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CN112973615A (en) * 2021-03-12 2021-06-18 浙江工业大学 Mixing valve tower plate arranged in high density

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CX01 Expiry of patent term

Granted publication date: 20041229

CX01 Expiry of patent term