CN1683043A - Tooth edge float valve - Google Patents
Tooth edge float valve Download PDFInfo
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- CN1683043A CN1683043A CN 200510049083 CN200510049083A CN1683043A CN 1683043 A CN1683043 A CN 1683043A CN 200510049083 CN200510049083 CN 200510049083 CN 200510049083 A CN200510049083 A CN 200510049083A CN 1683043 A CN1683043 A CN 1683043A
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- 239000007788 liquid Substances 0.000 claims abstract description 146
- 238000005452 bending Methods 0.000 claims abstract description 14
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 abstract description 9
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- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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Abstract
The tooth edge float valve includes tabulated valve cover, liquid facing valve leg on one end of the valve cover and in the upstream position, liquid backing valve leg on the other end of the valve cover and in the downstream position, and valve feed fixed separately to the lower ends of the liquid facing valve leg and the liquid backing valve leg. The valve cover has downward bending toothed structures in the sides and the downward bending toothed structures can reduce the bubble diameter, raise the stability of the foam layer and avoid the direct spray of gas and liquid. In addition, the valve cover is provided with wedged slot to avoid the formation of gas flow eddy below the float valve, decrease liquid back mixing and lower the gas resistance of the float valve; and the liquid backing valve leg is provided with liquid guide hole for gas to drive liquid towards the outlet dam so as to reduce the liquid surface fall and decrease liquid back mixing.
Description
(1) technical field
The present invention relates to the float valve that a kind of valve plate is used.
(2) background technology
It is big that valve plate has operating flexibility, and mist entrainment is little, and leakage is few, and disposal ability is big, the advantage that mass-transfer efficiency is high, extensive use in chemical industry, petroleum industry, pharmaceuticals industry.At present, normally used in the industrial production is F1 type valve plate and rectangular valve column plate.F1 type float valve is constantly rotation under the air-flow effect, causes the wearing and tearing of valve pin and valve opening, and float valve blocks easily or comes off, and influences the hydrodynamics and the mass-transfer performance of column plate, even is forced to shut-down (breakdown) mainteance.F1 type valve plate is in operating process, and air-flow outwards sprays around float valve, and backmixing of liquid phase is big on the plate, reduces the column plate mass-transfer efficiency.Simultaneously, exist sizable resistance and air-flow and can contrary liquid stream spray and make on the plate liquid level drop big, cause that the inhomogeneous and inhomogeneous phenomenon of leakage of distribution of gas produces reduction column plate mass-transfer efficiency and operating flexibility because liquid flows through F1 type float valve.Rectangular valve can not rotate in valve opening, and valve pin and valve opening are not easy to wear, float valve difficult drop-off and blocking, and the time between overhauls(TBO) is long.Rectangular valve in operating process, air-flow from the side opening that rectangular valve and valve opening form with the liquid flow path direction at an angle of 90 or less than the direction ejection at 90 ° of angles, liquid level drop is less on the plate, backmixing of liquid phase is less on the plate, the column plate mass-transfer efficiency is higher.Simultaneously, in order further to reduce liquid level drop on the plate, improve the column plate mass-transfer efficiency, the float valve that various guiding liquid stream also occurred, as guide float-valve, trapezoidal float valve, arrow-like floating valve, symmetrical quadrangle float valve, ADV float valve or the like, in certain opereating specification, show good hydrodynamics and mass-transfer performance.But these valve platies all exist following deficiency:
1. above valve plate is in order to reduce manufacturing cost, reduce the quantity of float valve, the perforated area of general each float valve is more much bigger than sieve aperture commonly used, the sectional area of air-flow post that flows out single float valve is big, the bubble that forms in froth bed is big and inhomogeneous, the gas-liquid contact area is little, influences the mass-transfer efficiency of column plate.
2. above float valve some offer on the valve gap delivery hole with guide plate on liquid stream, reduce liquid level drop, but these delivery holes standard-sized sheet when float valve is not also opened can make the operation lower limit of valve plate raise.
3. above float valve is because valve gap is bigger, and air-flow is turned back to rising from the process that outwards spray the side of float valve and valve opening formation from valve opening again, forms vortex easily below the float valve valve gap, increases plate pressure drop, reduces mass-transfer efficiency.
4. above float valve is because float valve valve gap side line or in line or become a curve, all on same horizontal plane, make the air-flow of ejection float valve all spray into liquid layer with identical direction, make the liquid layer gas holdup on float valve and nearly float valve top lower, and gas holdup is higher in the liquid layer in the middle of two float valves, the froth bed instability, increase entrainment, reduce the column plate disposal ability, the inhomogeneous gas-liquid contact gear ratio surface area that also can reduce of froth bed gas holdup reduces the column plate mass-transfer efficiency.
Chinese invention patent 97122142.1 provides a kind of band wing valve plate, the float valve of this column plate is a float valve of being with the valve wing, the valve wing has inverted U-shaped downward turnup structure, support by the valve wing and to connect the valve wing and valve body, the both sides of its valve wing are straight flange or strike out dentalation that the both sides of valve gap are straight line or strike out dentalation.By the valve wing is set, can reduce on the column plate by raft seam gas speed height between the empty tower gas velocity transition region, raising disposal ability; Can make that gas-liquid contact is more even, Gas-Liquid Dispersion is more abundant; Can stop the direct injection of gas-liquid.But, only under high tolerance, this invention could embody these advantages preferably, under low tolerance, the effect that the valve wing is set is little, and can make the liquid layer gas holdup that is positioned on the float valve lower on the contrary, and gas holdup is higher in the liquid layer in the middle of two float valves, increase the unstability of froth bed, reduced the disposal ability of column plate.
In addition, the valve wing structure complexity that on float valve, is provided with, manufacture craft is also corresponding complicated and take material, and the existence of the valve wing also can be to the barrier effect that flowed of liquid phase, thereby can increase the liquid level drop on the column plate.
(3) summary of the invention
The treatment effeciency of valve plate is undesirable in the prior art, plate pressure drop is higher in order to overcome, froth bed gas holdup and the bubble size is inhomogeneous, liquid level drop is bigger deficiency, the invention provides that a kind of mass-transfer efficiency height, plate pressure drop are low, froth bed gas holdup and bubble size evenly, valve plate float valve that liquid level drop is little.
The technical scheme that the present invention solves its technical problem is: a kind of tooth edge float valve, comprise flat valve gap, be positioned at the liquid meeting valve leg and the liquid bearing valve leg at described valve gap two ends, described liquid meeting valve leg is positioned at the upstream position of flow direction, described liquid bearing valve leg is positioned at the downstream position of flow direction, described liquid meeting valve leg lower end and liquid bearing valve leg lower end be affixed valve pin respectively, and the side of described valve gap is provided with the dentalation of downward bending.
Further, offer wedge-shaped slot on the described valve gap.
Further, offer delivery hole on the described liquid bearing valve leg.
Further, the height of described liquid meeting valve leg equals the height of liquid bearing valve leg.Perhaps: the height of described liquid meeting valve leg is less than the height of liquid bearing valve leg.
Further, the angle of the downward bending of described dentalation is 0-60 °.
Beneficial effect of the present invention is: 1. downwards the dentalation of bending is divided into several strands tiny air-flow with gas, has reduced bubble diameter, increases the gas-liquid contact area, has improved mass-transfer efficiency, and can prevent the direct injection of gas-liquid when high tolerance.2. downwards the dentalation water conservancy diversion gas of bending sprays into liquid layer between float valve and float valve with the direction under oblique, another part gas then spray on the float valve with obliquely direction by the space between dentalation and float valve and float valve between liquid layer, make on the column plate between float valve and float valve and the local gas holdup of float valve top liquid layer reaches unanimity, improve the stability of froth bed, increased the disposal ability of column plate.3. but wedge-shaped slot water conservancy diversion gas has been avoided forming stream swirl below float valve to valve opening two side flow of last layer column plate, has reduced liquid dispersion, reduced the resistance of gas by float valve.4. delivery hole can promote liquid by gas and flows to exit weir, has reduced liquid level drop, has reduced liquid dispersion.5. when not floating, float valve forms a static aperture downwards between the valve opening of the dentalation of bending and column plate, even when tolerance is minimum, also can carry out gas-liquid mass transfer.
(4) description of drawings
Fig. 1 is the valve tower structural representation with tooth edge float valve of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is the schematic diagram of float valve of the present invention when being in standard-sized sheet on column plate.
Fig. 4-the 6th has the schematic diagram of the tooth edge float valve of the present invention of difformity valve gap.
Fig. 7-the 9th, the wedge-shaped slot schematic diagram of various varying cross-section shapes.
Figure 10-the 15th, the schematic diagram of various difformity dentalations.
Figure 16-the 21st, the schematic diagram of difformity delivery hole.
Figure 22 is the present invention and a F1 valve plate dry-plate pressure drop comparison diagram among the embodiment 13.
Figure 23 is the present invention and a F1 valve plate wet plate pressure drop comparison diagram among the embodiment 13.
Figure 24 is the present invention and a F1 valve plate tower effect comparison diagram among the embodiment 14.
(5) specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Embodiment one
With reference to Fig. 1, Fig. 2, several column plates 1 that tooth edge float valve of the present invention is installed are installed in the upright tower 2 successively.Liquid is introduced the upstream extremity of the column plate of the top by feed tube for liquid line 3.The upstream extremity of adjacent low column plate guided into liquid by downspout 4 by the downstream of a higher column plate.Gas gas supply pipe line 5 is again introduced the column plate below of below, and gas enters in the liquid on the column plate by the tooth edge float valve on the column plate.The top of upright tower is provided with gas discharge outlet 6, and the bottom is provided with liquid outlet 7.A liquid receiving area 8 is arranged on every block of column plate, and it accepts the liquid from downspout 4, and liquid comes out to fall into liquid receiving area 8 back diverted flow to the bubbling area 9 that is provided with tooth edge float valve from downspout 4.Offer valve opening 10 in bubbling area 9, liquid and the gas that enters liquid layer by tooth edge float valve carry out crossing exit weir and entering downspout 4 after mass transfer contacts, and enter down one deck column plate again by downspout 4.
With reference to Fig. 3, Fig. 4, on described column plate, offer valve opening 10, described valve opening 10 matches with tooth edge float valve of the present invention.Tooth edge float valve comprises flat valve gap 11, is positioned at the liquid meeting valve leg 12 and the liquid bearing valve leg 13 at described valve gap two ends, described liquid meeting valve leg 12 is positioned at the upstream position of flow direction, described liquid bearing valve leg 13 is positioned at the downstream position of flow direction, described liquid meeting valve leg 12 lower ends and liquid bearing valve leg 13 lower ends are affixed valve pin 14 respectively, valve pin 14 is used for controlling the height that float valve rises, the side of described valve gap 11 is provided with the dentalation 15 of downward bending, and described dentalation 15 angle of bending downwards is 0-60 °.
According to the present invention, be divided into many strands of tiny air-flows during space that gas is formed by the dentalation 15 and the limit of valve opening 10 and spray into liquid layer, can reduce bubble diameter like this, improve the uniformity of bubble diameter, thereby the gas-liquid contact gear ratio surface area in the increase froth bed, the mass-transfer efficiency of raising column plate.Particularly, dentalation 15 back that part gas is run into downward bending is spraying into liquid layer between float valve and float valve with the direction under oblique under the water conservancy diversion of dentalation 15, another part gas then the space by 15 of dentalations spray on the float valve with obliquely direction and float valve and float valve between liquid layer, make on the plate between float valve and float valve and the local gas holdup in the liquid layer of float valve top reaches unanimity, improve the stability of froth bed, increase the disposal ability of column plate.
Even when tolerance was minimum, float valve did not float, dentalation 15 that gas also can be by downward bending and the static aperture between the column plate valve opening 10 enter liquid layer and carry out mass transfer.
The valve gap of tooth edge float valve shown in Figure 4 is a rectangle, can certainly be trapezoidal, ellipse as shown in Figure 6, circular or the like as shown in Figure 5, as long as the shape of valve opening 10 is complementary on the shape of valve gap 11 and the column plate.
In dentalation, the shape of tooth also can be diversified, shown in Figure 10-15, can be lance tooth, stepped tooth, oval tooth, also can be their any combination.In addition, the spacing between tooth and the tooth neither be fixed, and can adjust arbitrarily as required.
Embodiment two
With reference to Fig. 3,4, on described valve gap 10, offer wedge-shaped slot 16.But wedge-shaped slot 16 water conservancy diversion gases have been avoided forming stream swirl below float valve to valve opening two side flow of last layer column plate, have reduced liquid dispersion, reduced the resistance of gas by float valve.The shape of the cross section of described wedge-shaped slot 16 can be diversified, and the V-arrangement shown in Fig. 7-9, arc fall trapezoidal etc.
All the other structures are identical with embodiment one with embodiment.
Embodiment three
With reference to Fig. 3, Fig. 4, on described liquid bearing valve leg 13, offer delivery hole 17, this delivery hole 17 can promote liquid by gas and flow to exit weir, has reduced liquid level drop, has reduced liquid dispersion.Delivery hole 17 is opened on the liquid bearing valve leg, and in the tolerance by float valve hour, float valve does not float, delivery hole 17 below column plate, therefore, the operation lower limit of offering the valve plate that can not raise of delivery hole 17.The shape of described delivery hole 17 can be diversified, the circle shown in Figure 16-21, ellipse, rectangle, trapezoidal, triangle, rhombus etc.
All the other structures are identical with embodiment one with embodiment.
Embodiment four
With reference to Fig. 3, Fig. 4, on described valve gap 10, offer wedge-shaped slot 16.But wedge-shaped slot 16 water conservancy diversion gases have been avoided forming stream swirl below float valve to valve opening two side flow of last layer column plate, have reduced liquid dispersion, reduced the resistance of gas by float valve.The shape of the cross section of described wedge-shaped slot 16 can be diversified, and the V-arrangement shown in Fig. 7-9, arc fall trapezoidal etc.
All the other structures are identical with embodiment three with embodiment.
Embodiment five
The height of the liquid meeting valve leg of described tooth edge float valve equals the height of liquid bearing valve leg.When fluid over-flow intensity hour, fluid is less by the fluid resistance of tower plate surface, liquid level drop is also less on the column plate, can adopt the height of liquid meeting valve leg to equal the such structure of height of liquid bearing valve leg.
All the other structures are identical with embodiment one with embodiment.
Embodiment six
The height of the liquid meeting valve leg of described tooth edge float valve equals the height of liquid bearing valve leg.When fluid over-flow intensity hour, fluid is less by the fluid resistance of tower plate surface, liquid level drop is also less on the column plate, can adopt the height of liquid meeting valve leg to equal the such structure of height of liquid bearing valve leg.
All the other structures are identical with embodiment two with embodiment.
Embodiment seven
The height of the liquid meeting valve leg of described tooth edge float valve equals the height of liquid bearing valve leg.When fluid over-flow intensity hour, fluid is less by the fluid resistance of tower plate surface, liquid level drop is also less on the column plate, can adopt the height of liquid meeting valve leg to equal the such structure of height of liquid bearing valve leg.
All the other structures are identical with embodiment three with embodiment.
Embodiment eight
The height of the liquid meeting valve leg of described tooth edge float valve equals the height of liquid bearing valve leg.When fluid over-flow intensity hour, fluid is less by the fluid resistance of tower plate surface, liquid level drop is also less on the column plate, can adopt the liquid meeting valve leg height to equal the such structure of liquid bearing valve leg height.
All the other structures are identical with embodiment four with embodiment.
Embodiment nine
The height of the liquid meeting valve leg of described tooth edge float valve is less than the height of liquid bearing valve leg.When fluid over-flow intensity is big, the fluid resistance that fluid flows through tower plate surface is bigger, adopt the structure of the height of liquid meeting valve leg this moment less than the height of liquid bearing valve leg, behind the float valve standard-sized sheet, form an acute angle at fluid flow direction bonnet, and column plate, thereby the gas of float valve both sides ejection will promote liquid to flow forward, reduces the liquid level drop on the plate face.
All the other structures are identical with embodiment one with embodiment.
Embodiment ten
The height of the liquid meeting valve leg of described tooth edge float valve is less than the height of liquid bearing valve leg.When fluid over-flow intensity is big, the fluid resistance that fluid flows through tower plate surface is bigger, adopt the structure of the height of liquid meeting valve leg this moment less than the height of liquid bearing valve leg, behind the float valve standard-sized sheet, form an acute angle at fluid flow direction bonnet, and column plate, thereby the gas of float valve both sides ejection will promote liquid to flow forward, reduces the liquid level drop on the plate face.
All the other structures are identical with embodiment two with embodiment.
Embodiment 11
The height of the liquid meeting valve leg of described tooth edge float valve is less than the height of liquid bearing valve leg.When fluid over-flow intensity is big, the fluid resistance that fluid flows through tower plate surface is bigger, adopt the structure of the height of liquid meeting valve leg this moment less than the height of liquid bearing valve leg, behind the float valve standard-sized sheet, form an acute angle at fluid flow direction bonnet, and column plate, thereby the gas of float valve both sides ejection will promote liquid to flow forward, reduces the liquid level drop on the plate face.
All the other structures are identical with embodiment three with embodiment.
Embodiment 12
The height of the liquid meeting valve leg of described tooth edge float valve is less than the height of liquid bearing valve leg.When fluid over-flow intensity is big, the fluid resistance that fluid flows through tower plate surface is bigger, adopt the structure of liquid meeting valve leg height this moment less than the liquid bearing valve leg height, behind the float valve standard-sized sheet, form an acute angle at fluid flow direction bonnet, and column plate, thereby the gas of float valve both sides ejection will promote liquid to flow forward, reduces the liquid level drop on the plate face.
All the other structures are identical with embodiment four with embodiment.
Embodiment 13
In distance between plates is that 600mm, diameter are mounting layer column plate in the upright tower of 600mm, and ground floor is the entrainment collecting board, and second and third layer is for having the work column plate of tooth edge float valve, and the 4th layer is the leakage collecting board, and material is a stainless steel.The downspout of tooth edge float valve column plate is conventional chord downcomer, overflow height of weir 50mm, downflow weir is long to be 392mm, the downspout bottom is apart from the column plate 40mm of lower floor, every block of column plate is provided with 31 and heavily is the tooth edge float valve of 29g, the valve gap of tooth edge float valve is the rectangle of 20mm * 50mm, valve opening on the column plate base plate is the rectangle of 21mm * 51mm, wedge-shaped slot on the valve gap is wide 10mm, the isosceles V-shape of dark 4mm, the tooth of the serrated edge of valve gap is upper base 4mm, the 8mm that goes to the bottom, the isosceles trapezoid tooth of high 8mm, the reclinate angle of stepped tooth is 30 °, be trapezoidal breach between two adjacent stepped tooths, on the every side serrated edge of tooth limit drain float valve valve gap four teeth are arranged, it highly is 10mm that tooth limit drain float valve rises its rise of back, and profile of tooth guide float-valve liquid bearing valve leg is provided with the circular delivery hole that diameter is 8mm, during tooth limit drain float valve standard-sized sheet, the void tower percent opening of column plate is 11.75%.The system of tower operation is air-water, experimental datas such as plate pressure drop, entrainment, leakage have been tested, and compare with F1 type valve plate, wherein the downcomer structure of F1 type valve plate is identical with tooth limit drain float valve, adorn 28 F1 type float valves on the column plate altogether, the void tower percent opening of F1 type valve plate is 11.83%.
Experimental result is seen Figure 22, Figure 23, the F among the figure
0Be the valve opening kinetic energy factor, Δ P is a plate pressure drop, and when doing the wet plate pressure drop contrast, liquid measure is 20m
3/ m
2/ h.As seen from the figure, before the float valve standard-sized sheet, the pressure drop of valve plate with tooth edge float valve of the present invention is a little more than F1 type valve plate, and pressure drop is lower than F1 type valve plate behind the float valve standard-sized sheet.
Embodiment 14
In distance between plates is that 600mm, diameter are that 6 layers of tooth of the present invention limit drain valve platies are installed in the stainless head tower of 600mm.The downspout of tooth limit drain valve plate is conventional chord downcomer, overflow height of weir 50mm, downflow weir is long to be 392mm, the downspout bottom is apart from the column plate 40mm of lower floor, every block of column plate is provided with 31 and heavily is the tooth limit drain float valve of 29g, the valve gap of tooth limit drain float valve is the rectangle of 20mm * 50mm, valve opening on the column plate base plate is the rectangle of 21mm * 51mm, wedge-shaped slot on the valve gap is wide 10mm, the isosceles V-shape of dark 4mm, the tooth of the serrated edge of valve gap is upper base 4mm, the 8mm that goes to the bottom, the stepped tooth of high 8mm, the reclinate angle of stepped tooth is 30 °, be trapezoidal breach between two adjacent stepped tooths, on the every side serrated edge of tooth limit drain float valve valve gap three teeth are arranged, it highly is 10mm that tooth limit drain float valve rises its rise of back, is provided with the circular delivery hole that diameter is 8mm on the profile of tooth guide float-valve liquid bearing valve leg, during tooth limit drain float valve standard-sized sheet, the void tower percent opening of column plate is 11.75%.The system of tower operation is alcohol-water, tested full column efficiency, and compared with F1 type valve plate, wherein the downcomer structure of F1 type valve plate is identical with tooth limit drain float valve, adorn 28 F1 type float valves on the column plate altogether, the void tower percent opening of F1 type valve plate is 11.83%.
Experimental result is seen Figure 13, and the F among the figure is the void tower kinetic energy factor, can be found out significantly by figure, and the tower effect with valve plate of tooth edge float valve of the present invention is higher than F1 type valve plate.
Claims (9)
1. tooth edge float valve, comprise flat valve gap, be positioned at the liquid meeting valve leg and the liquid bearing valve leg at described valve gap two ends, described liquid meeting valve leg is positioned at the upstream position of flow direction, described liquid bearing valve leg is positioned at the downstream position of flow direction, described liquid meeting valve leg lower end and liquid bearing valve leg lower end be affixed valve pin respectively, and it is characterized in that: the side of described valve gap is provided with the dentalation of downward bending.
2. tooth edge float valve as claimed in claim 1 is characterized in that: offer wedge-shaped slot on the described valve gap.
3. tooth edge float valve as claimed in claim 1 or 2 is characterized in that: offer delivery hole on the described liquid bearing valve leg.
4. tooth edge float valve as claimed in claim 1 or 2 is characterized in that: the height of described liquid meeting valve leg equals the height of liquid bearing valve leg.
5. tooth edge float valve as claimed in claim 3 is characterized in that: the height of described liquid meeting valve leg equals the height of liquid bearing valve leg.
6. tooth edge float valve as claimed in claim 1 or 2 is characterized in that: the height of described liquid meeting valve leg is less than the height of liquid bearing valve leg.
7. tooth edge float valve as claimed in claim 3 is characterized in that: the height of described liquid meeting valve leg is less than the height of liquid bearing valve leg.
8. tooth edge float valve as claimed in claim 5 is characterized in that: the described dentalation angle of bending downwards is 0-60 °.
9. tooth edge float valve as claimed in claim 7 is characterized in that: the described dentalation angle of bending downwards is 0-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100490834A CN100360207C (en) | 2005-02-06 | 2005-02-06 | Tooth edge float valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100490834A CN100360207C (en) | 2005-02-06 | 2005-02-06 | Tooth edge float valve |
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| CN1683043A true CN1683043A (en) | 2005-10-19 |
| CN100360207C CN100360207C (en) | 2008-01-09 |
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| CNB2005100490834A Active CN100360207C (en) | 2005-02-06 | 2005-02-06 | Tooth edge float valve |
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| CN102489031A (en) * | 2011-11-28 | 2012-06-13 | 浙江工业大学 | Rotary float valve tower |
| 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 |
| CN103977590A (en) * | 2014-05-26 | 2014-08-13 | 万华化学集团股份有限公司 | Gas-liquid mass transfer element |
| CN104941237A (en) * | 2015-06-29 | 2015-09-30 | 苏州市科迪石化工程有限公司 | Tongue-type shunt float valve tray |
| CN104941239A (en) * | 2015-07-02 | 2015-09-30 | 苏州市科迪石化工程有限公司 | Float valve |
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| CN112138419A (en) * | 2020-09-30 | 2020-12-29 | 辽宁工业大学 | Concave square tooth edge float valve |
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2005
- 2005-02-06 CN CNB2005100490834A patent/CN100360207C/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102489031B (en) * | 2011-11-28 | 2013-12-04 | 浙江工业大学 | Rotary float valve tower |
| CN102489031A (en) * | 2011-11-28 | 2012-06-13 | 浙江工业大学 | Rotary float valve tower |
| 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 |
| CN103977590A (en) * | 2014-05-26 | 2014-08-13 | 万华化学集团股份有限公司 | Gas-liquid mass transfer element |
| CN104941235B (en) * | 2015-06-29 | 2017-01-18 | 苏州市科迪石化工程有限公司 | Round flow dividing damping floating valve tower disc |
| CN104941237A (en) * | 2015-06-29 | 2015-09-30 | 苏州市科迪石化工程有限公司 | Tongue-type shunt float valve tray |
| CN104941235A (en) * | 2015-06-29 | 2015-09-30 | 苏州市科迪石化工程有限公司 | Round flow dividing damping floating valve tower disc |
| CN104941239A (en) * | 2015-07-02 | 2015-09-30 | 苏州市科迪石化工程有限公司 | Float valve |
| CN105498267A (en) * | 2016-01-15 | 2016-04-20 | 深圳市诚达科技股份有限公司 | Hexagonal valve fixing tower plate |
| CN108404439A (en) * | 2018-03-22 | 2018-08-17 | 南京英斯派工程技术有限公司 | A kind of float valve and the rectifying tower tray equipped with the float valve |
| CN108404439B (en) * | 2018-03-22 | 2023-07-04 | 南京佳华科技股份有限公司 | Floating valve and rectifying tray provided with same |
| CN110787477A (en) * | 2019-11-18 | 2020-02-14 | 沈阳派司钛设备有限公司 | Novel titanium-molybdenum-nickel tower device for butanone oxime |
| CN110787477B (en) * | 2019-11-18 | 2023-08-25 | 沈阳派司钛设备有限公司 | Novel titanium molybdenum nickel tower device for butanone oxime |
| CN112138419A (en) * | 2020-09-30 | 2020-12-29 | 辽宁工业大学 | Concave square tooth edge float valve |
| CN112555501A (en) * | 2020-11-20 | 2021-03-26 | 南京敦先化工科技有限公司 | Guide curve micro valve |
| CN114315513A (en) * | 2022-01-13 | 2022-04-12 | 兖矿鲁南化工有限公司 | System and process for alcohol-aldehyde co-production |
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