CN101721828A - Liquid guide flow type vertical sieve tray device - Google Patents
Liquid guide flow type vertical sieve tray device Download PDFInfo
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- CN101721828A CN101721828A CN201010300365A CN201010300365A CN101721828A CN 101721828 A CN101721828 A CN 101721828A CN 201010300365 A CN201010300365 A CN 201010300365A CN 201010300365 A CN201010300365 A CN 201010300365A CN 101721828 A CN101721828 A CN 101721828A
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- 239000007788 liquid Substances 0.000 title claims abstract description 68
- 239000007791 liquid phase Substances 0.000 claims abstract description 30
- 238000003466 welding Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012071 phase Substances 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003889 chemical engineering Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The invention relates to a liquid guide flow type vertical sieve tray device. A mass transfer element on the tray mainly comprises a baffle and a traditional gas-liquid contact mass transfer element which are combined, wherein the baffle body comprises a bottom surface (3), a side end face (2) and a rear end face (1); a gap is formed between the rear end face (1) of the baffle and an end plate (7) of the mass transfer element or a jet plate (6) and between the bottom surface (3) of the baffle and a board of the tray (10); a part of area on the bottom surface (3) of the baffle is hollow; and the section of the hollow part is welded with the jet plate (6) of the gas-liquid contact mass transfer element. The liquid guide flow type vertical sieve tray device effectively realizes uniform flow of gas-liquid two phases and avoids back-mixing and local backflow of the liquid phase. Meanwhile, the gas-liquid two phases can be better separated under the impact action between a gas-liquid two phase mixture jetted by the mass transfer element and the baffle; the retention time of the gas phase in the liquid phase is reduced; gas entrainment is reduced; and the operation resilience and the separation efficiency of the tray are improved.
Description
Technical field
The present invention relates to a kind of vertical sieve tray device of liquid guide flow type, belong to the optimization of petrochemical industry with the novel tower internals structure of plate column.
Background technology
Plate column is an important separation equipment in petrochemical industry such as the unit operations such as rectifying, absorption, because of its have simple in structure, be easy to amplify, advantage such as production capacity is big, mass-transfer efficiency is high and operating flexibility is big, bringing into play important effect in the chemical industry now, therefore the design and the exploitation of new and effective column plate have very practical meaning.Based on this, for a long time, the novel column plate of kind surplus people have developed 80 successively around the aim of high efficiency, big flux, wide elasticity, low pressure drop.In these novel column plates, disposal ability is big because of having for vertical sieve tray, operating flexibility can be handled advantages such as easy foaming material greatly and especially, has caused people's common concern.This laboratory (Chemical Engineering associating National Key Laboratory) is very little for the overall flow pattern change of liquid phase on the column plate by discovering the gas-liquid contact mass transfer element on such column plate, the imperfect mobile phenomenon of tradition column plate is as refluxing, channel, height of liquid layer differences etc. still exist on such column plate, and gas-liquid contact mass transfer element is local on the column plate serious backflow phenomenon can occur.Concrete manifestation is as follows: at first be liquid phase stream behind gas-liquid contact element generation mass transfer, still fall around the gas-liquid contact element, can cause local backmixing of liquid phase; Secondly, because gas-liquid mixture each takes place to even injection in mass transfer component, can cause the back-mixing of Partial Liquid Phase on flow direction.More than these aspects all affect the uniformity and the order of liquid flow on this class vertical sieve tray, and then reduce the separative efficiency of column plate.For solving these weak points of such column plate, further improve mass transfer, the heat transfer efficiency of column plate, the present invention uses for reference the early-stage Study achievement (CN1220179A of Chemical Engineering associating National Key Laboratory rectifying separating experiment chamber, open day: on June 23rd, 1999), through new innovation and experimental study, limits liquid phase main body back-mixing, a kind of liquid guide flow type vertical sieve tray device that the guiding liquid phase is uniform sequentially mobile have forward been proposed a kind ofly can effectively avoid the liquid phase local return.
Summary of the invention
The vertical sieve tray of the liquid guide flow type that the present invention relates to comprises the trapezoidal vertical sieve tray (as shown in Figure 1) after the liquid guide flow architecture advances, rectangle vertical sieve tray (as shown in Figure 2) and circular vertical sieve tray (as shown in Figure 3) etc.This novel tower plate structure can effectively avoid liquid phase at the backflow of gas-liquid contact mass transfer element part and the back-mixing on the main body flow direction, thereby makes on the column plate distribution of liquid phase more even.In addition, the baffle arrangement in the device has also improved the distribution situation of gas phase, has improved the mass transfer separative efficiency of column plate effectively.
The present invention is achieved by the following technical solutions:
The vertical sieve tray device of a kind of liquid guide flow type of the present invention, the mass transfer component on the column plate mainly are made up of baffle plate and traditional gas-liquid contact mass transfer combination of elements; Wherein the baffle plate entity comprises bottom surface 3, side end face 2 and rear end face 1; Between the rear end face 1 of baffle plate and the end plate 7 of mass transfer component (for for the trapezoidal vertical sieve tray) or the jet tray 6 (for circular, rectangle vertical sieve tray), all leave the space between bottom surface 3 and the column plate plate face 10,3 subregions, bottom surface of baffle plate hollow out, for circular, rectangle vertical sieve tray, jet tray 6 welding of the cross section of cut-out and gas-liquid contact mass transfer element; For trapezoidal vertical sieve tray, the cross section of cut-out is with the jet tray 6 and end plate 7 welding of gas-liquid contact mass transfer element.
3 one-tenth 90 °～135 ° angles, the side end face 2 and the bottom surface of described baffle plate; Rear end face 1 sealing of baffle plate, purpose are to prevent the back-mixing on the liquid phase main body flow direction f.The front end face 8 and the upper surface 9 of baffle plate are unlimited fully, so that effectively guide evenly flowing of liquid and gas; The rear end face 1 of baffle plate is a circular arc or square; Bottom surface 3 opening areas are circular or square;
Described gas-liquid contact mass transfer element is trapezoidal, rectangle or circle.
A described baffle plate can assemble with one or more mass transfer components.
When described baffle plate and mass transfer component assembling, guarantee that its bottom surface 3 and column plate 10 leave the space, and be located at jet tray 6 or opening area below, thereby stop liquid phase after spray-hole 5 ejections, to drop on the tray surfaces, and then avoided the local return of liquid phase in single mass transfer component.
After the gas-liquid two-phase that advantage of the present invention is and stream contacts sprays,, realized evenly flowing of gas-liquid two-phase effectively from the spray-hole 5 of mass transfer component jet tray 6, avoided the back-mixing and the local return of liquid phase through the guide functions of baffle plate.For gas phase, under the guiding of baffle plate side end face 2, the upwards jet flow that has a certain degree so just can be mixed more uniformly with the gas phase of adjacent mass transfer component ejection; For liquid phase, then by with the guide functions that contacts of baffle plate side end panel 2, flow forward comparatively uniformly, thereby avoided the local circulation of liquid phase to flow.Simultaneously, the gas-fluid two-phase mixture from the mass transfer component ejection can better realize gas-liquid two-phase to separate the minimizing time of staying of gas phase in liquid phase, the minimizing air foam amount of carrying secretly with the baffle plate percussion.In sum, liquid guide flow type vertical sieve tray device has improved the flow condition on the column plate and between column plate effectively, has improved the operating flexibility and the separative efficiency of column plate.
Description of drawings
Fig. 1 a is the vertical view of trapezoidal vertical sieve tray device one deck column plate;
Fig. 1 b is the front view of trapezoidal vertical sieve tray device one deck column plate;
Fig. 1 c is the left view of trapezoidal vertical sieve tray device one deck column plate;
Fig. 2 is the vertical view of rectangle vertical sieve tray device one deck column plate;
Fig. 3 is the vertical view of circular vertical sieve tray device one deck column plate;
Fig. 4 is the structural representation of rectangle baffle plate;
Fig. 5 is the structural representation of circular baffle plate;
Fig. 6 is the assembling schematic diagram of trapezoidal vertical sieve tray overhead gage and gas-liquid contact mass transfer element;
Fig. 7 is the assembling schematic diagram of rectangle vertical sieve tray overhead gage and gas-liquid contact mass transfer element;
Fig. 8 is the assembling schematic diagram of circular vertical sieve tray overhead gage and gas-liquid contact mass transfer element.
Illustrate: 1: the baffle plate rear end face; 2: the baffle plate side end face; 3: the baffle plate bottom surface; 4: gas-liquid contact mass transfer element separating plate; 5: gas-liquid contact mass transfer element spray-hole; 6: gas-liquid contact mass transfer element jet tray; 7: gas-liquid contact mass transfer element end plate (only in trapezoidal mass transfer component, existing); 8: the baffle plate front end face; 9: the baffle plate upper surface; 10: column plate plate face; A: the injection direction of gas-liquid contact mass transfer element spray-hole; B: the flow direction of gas-liquid mixture gas phase after baffle plate impacts separation; C: the flow direction of gas-liquid mixture liquid phase after baffle plate impacts separation; D: liquid phase drops to the flow direction of back on baffle plate on the baffle plate; E: the main body flow direction of gas phase; F: the main body flow direction of liquid phase.
Remarks: front and back are for flow direction, before the upstream is, after the downstream is.
The specific embodiment
In conjunction with the accompanying drawings the present invention is further specified:
A kind of structure of liquid guide flow type vertical sieve tray device is mainly combined by baffle plate and traditional gas-liquid contact mass transfer element.Wherein baffle plate can be rectangle baffle plate (as shown in Figure 4), it also can be circular baffle plate (as shown in Figure 5), the entity of two class baffle plates includes bottom surface 3, side end face 2 and rear end face 1, particularly, its front end face 8 and upper surface 9 are unlimited fully, rear end face 1, bottom surface 3 sealings, in addition, the side end face 2 and the bottom surface 3 of baffle plate are 90 °, 110 °, 135 °, and bottom surface 3 opening areas are circular or square; Have with the type of traditional gas-liquid contact mass transfer element of baffle combination, trapezoidal (as shown in Figure 6), rectangle (as shown in Figure 7) or circular (as shown in Figure 8) mass transfer component, with the number of the mass transfer component of same baffle combination be 1,2,3,4,5; For the assembly structure of baffle plate and mass transfer component, as Fig. 6, Fig. 7, shown in Figure 8, between the rear end face 1 of baffle plate and the end plate 7 of mass transfer component (for for the trapezoidal column plate) or the jet tray 6 (for rectangle and circular column plate), all leave certain space between bottom surface 3 and the column plate plate face 10,3 subregions, bottom surface of baffle plate hollow out, for circular, rectangle vertical sieve tray, jet tray 6 welding of the cross section of cut-out and gas-liquid contact mass transfer element; For trapezoidal vertical sieve tray, the cross section of cut-out is with the jet tray 6 and end plate 7 welding of gas-liquid contact mass transfer element.
A kind of workflow of liquid guide flow type vertical sieve tray device and state such as Fig. 1 a, Fig. 1 b, Fig. 1 c, Fig. 2, shown in Figure 3, after spray-hole 5 ejections of gas-liquid mixture on along a direction shown in Fig. 1 (c) from gas-liquid contact mass transfer element jet tray 6, impact guide functions through baffle plate side end face 2, on the one hand, liquid phase turns back to the bottom surface 3 of baffle plate along the c direction shown in Fig. 1 (c), because the sealing process of baffle plate rear end face 1, liquid phase can only be along Fig. 1 a, Fig. 2, d direction shown in Fig. 3 flows forward, thereby avoided the main body back-mixing of liquid phase effectively, simultaneously because the sealing process of baffle plate bottom surface 3, make liquid phase can't directly turn back on the bottom plate face of same gas-liquid contact mass transfer element, promptly baffle plate has been avoided the local return of the inner liquid phase of mass transfer component; On the other hand, gas phase is further separated from liquid phase through after the percussion of baffle plate, flows to the lastblock column plate comparatively uniformly along the b direction shown in Fig. 1 (c) at last.In addition, the overall flow situation of whole column plate such as Fig. 1 a, Fig. 2, shown in Figure 3, because adding of baffle plate, flow direction not only overall on column plate is like this, the flow direction of gas-liquid is also like this substantially in each gas-liquid contact mass transfer element, therefore the liquid guide flow type vertical sieve tray device of this patent proposition has improved the flow condition of gas-liquid two-phase on the column plate effectively, the uniformity and the order that flow have been increased, improved mass transfer on the column plate, the efficient of separating, find through analog computation, the separative efficiency of the trapezoidal vertical sieve tray device of liquid guide flow type of this patent is higher by 30% than traditional vertical sieve tray device, the rectangle vertical sieve tray is high by 26%, and circular vertical sieve aperture is high by 33%.
Claims (8)
1. the vertical sieve tray device of a liquid guide flow type is characterized in that, the mass transfer component on the column plate mainly is made up of baffle plate and traditional gas-liquid contact mass transfer combination of elements; Wherein the baffle plate entity comprises bottom surface 3, side end face 2 and rear end face 1; Between the rear end face 1 of baffle plate and the end plate 7 of mass transfer component or the jet tray 6, all leave the space between bottom surface 3 and the column plate plate face 10,3 subregions, bottom surface of baffle plate hollow out, for circular, rectangle vertical sieve tray, jet tray 6 welding of the cross section of cut-out and gas-liquid contact mass transfer element; For trapezoidal vertical sieve tray, the cross section of cut-out is with the jet tray 6 and end plate 7 welding of gas-liquid contact mass transfer element.
2. the vertical sieve tray device of liquid guide flow type as claimed in claim 1 is characterized in that 3 one-tenth 90 °～135 ° angles in side end face 2 and bottom surface of baffle plate.
3. the vertical sieve tray device of liquid guide flow type as claimed in claim 1 is characterized in that rear end face 1 sealing of baffle plate, and purpose is to prevent the back-mixing on the liquid phase main body flow direction f.
4. the vertical sieve tray device of liquid guide flow type as claimed in claim 1 is characterized in that the front end face 8 of baffle plate and upper surface 9 are unlimited fully, so that effectively guide evenly flowing of liquid and gas.
5. the vertical sieve tray device of liquid guide flow type as claimed in claim 1 is characterized in that the rear end face 1 of baffle plate is circular arc or square, and bottom surface 3 opening areas are circular or square.
6. the vertical sieve tray device of liquid guide flow type as claimed in claim 1 is characterized in that gas-liquid contact mass transfer element is trapezoidal, rectangle or circle.
7. the vertical sieve tray device of liquid guide flow type as claimed in claim 1 is characterized in that a baffle plate assembles with one or more mass transfer components.
8. the vertical sieve tray device of liquid guide flow type as claimed in claim 1, when it is characterized in that the assembling of baffle plate and mass transfer component, the space is left with column plate 10 in bottom surface 3, and be located at mass transfer component jet tray 6 opening areas below, thereby stop liquid phase after spray-hole 5 ejections, to drop on the tray surfaces, avoided the local return of liquid phase in single mass transfer component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103003658A CN101721828B (en) | 2010-01-15 | 2010-01-15 | Liquid guide flow type vertical sieve tray device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103003658A CN101721828B (en) | 2010-01-15 | 2010-01-15 | Liquid guide flow type vertical sieve tray device |
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| Publication Number | Publication Date |
|---|---|
| CN101721828A true CN101721828A (en) | 2010-06-09 |
| CN101721828B CN101721828B (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010103003658A Expired - Fee Related CN101721828B (en) | 2010-01-15 | 2010-01-15 | Liquid guide flow type vertical sieve tray device |
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| Country | Link |
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| CN (1) | CN101721828B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861452A (en) * | 2011-07-06 | 2013-01-09 | 北京先锋创新科技发展有限公司 | Guiding sieve plate float valve tower |
| CN102908975A (en) * | 2012-10-22 | 2013-02-06 | 中国石油大学(华东) | Elongated sawtoothed vertical sieve-plate tower plate |
| CN102908974A (en) * | 2012-10-22 | 2013-02-06 | 中国石油大学(华东) | Composite column plate with coupling of sawtooth-shaped inclined strip-shaped cover hood and regular filler blocks |
| CN113413731A (en) * | 2021-06-28 | 2021-09-21 | 天津大学 | Gas-liquid contact device |
-
2010
- 2010-01-15 CN CN2010103003658A patent/CN101721828B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861452A (en) * | 2011-07-06 | 2013-01-09 | 北京先锋创新科技发展有限公司 | Guiding sieve plate float valve tower |
| CN102861452B (en) * | 2011-07-06 | 2016-06-29 | 北京先锋创新科技发展有限公司 | Linde sieve tray valve tower |
| CN102908975A (en) * | 2012-10-22 | 2013-02-06 | 中国石油大学(华东) | Elongated sawtoothed vertical sieve-plate tower plate |
| CN102908974A (en) * | 2012-10-22 | 2013-02-06 | 中国石油大学(华东) | Composite column plate with coupling of sawtooth-shaped inclined strip-shaped cover hood and regular filler blocks |
| CN113413731A (en) * | 2021-06-28 | 2021-09-21 | 天津大学 | Gas-liquid contact device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101721828B (en) | 2011-06-08 |
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Granted publication date: 20110608 |
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