CN104524801A - Sieve-plate tower for dispersing falling liquid - Google Patents
Sieve-plate tower for dispersing falling liquid Download PDFInfo
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- CN104524801A CN104524801A CN201410819703.7A CN201410819703A CN104524801A CN 104524801 A CN104524801 A CN 104524801A CN 201410819703 A CN201410819703 A CN 201410819703A CN 104524801 A CN104524801 A CN 104524801A
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- sieve
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Abstract
The invention discloses a sieve-plate tower for dispersing falling liquid. The sieve-plate tower comprises a cylindrical tower body, wherein a plurality of falling liquid dispersing sieve plates are arranged along the axial direction of the tower body, and falling liquid pipes are arranged below a whole sieve plate plane in a dispersed manner to replace bow-shaped falling liquid pipes and liquid receiving areas at two sides of a conventional sieve-plate tower, so that a concentrated liquid falling or liquid receiving manner of the conventional sieve-plate tower is changed, the effective mass transfer area of the sieve plates is effectively improved, and the gas and liquid pass capacity is increased; and liquid on the sieve plates uniformly falls to a lower layer of the sieve plates by passing through the falling liquid pipes dispersed below the plate plane, so that other solid fillers or catalysts and the like for assisting mass transfer or reaction can be filled between two sieve plates conveniently to ensure that the space between very two sieve plates can be efficiently used and the space of the whole tower body can give full play to mass transfer and separation effects.
Description
Technical field
The invention belongs to mass transfer isolation technique field, relate to a kind of dispersion and fall liquid sieve-plate tower.
Background technology
In rectifying, absorb, in the mass transfer apparatuses such as extraction, sieve plate is simple with its structure, the advantage such as cheap is widely used always, but sieve plate operating flexibility is low, easy blocking, effective mass transfer area is little, the shortcomings such as the space between sieve plate cannot effectively utilize limit the application of sieve-plate tower in some fields, in order to overcome the shortcoming of sieve plate, it is made better to be applied in industrial process, there is a large amount of modified sieve plate, usual sieve-plate tower changes gas-liquid contact state from minimizing sieve plate resistance and liquid foam entrainment amount, improve the aspects such as sieve plate gas-liquid disposal ability to improve, as multidowncomer tray (MD column plate), linde sieve tray and New Vertical Sieve Tray etc., these follow-on sieve plates are in processing flux, the aspects such as efficiency of sieve plate increase, but, liquid layer space (Lin Jiang district) between sieve plate is in the blind area of mass transfer substantially, how effectively to utilize the space between sieve plate and effectively play its effect of mass transmitting and often ignored by people.
Summary of the invention
The object of this invention is to provide a kind of dispersion and fall liquid sieve-plate tower, improve the perforated area of sieve plate and effective mass transfer area, significantly increase gas flux, improve column plate mass-transfer efficiency, the special construction that liquid sieve-plate tower falls in dispersion simultaneously makes the space between every two pieces of sieve plates also can obtain efficiency utilization, makes whole tower body space give full play to the effect of mass transfer separation.
The technical solution adopted in the present invention is, liquid sieve-plate tower falls in a kind of dispersion, comprises cylindric tower body, is axially installed with some sieve plates along tower body.
Feature of the present invention is also,
Wherein downspout is the round tube vertically running through tower tray, and the upper end mouth of pipe of downspout is concordant with the uper side surface of tower tray, and the lower end mouth of pipe of downspout stretches out 20 ~ 50mm vertically downward by the downside surface of tower tray.
Wherein the internal diameter of downspout is not less than the diameter of pore, and the pitch of holes between each pore is 3 ~ 5 times of hole diameter, and the center of circle of downspout is positioned at the pore hole heart apart from the leg-of-mutton center surrounded, and the tube pitch of downspout is 3 ~ 5 times of downspout internal diameter.
Wherein the material of downspout and tower tray is carbon steel, stainless steel or fiberglass.
Wherein the installation of adjacent 2 pieces of sieve plates should be staggered the azimuth of integral multiple of 60 degree or 60 degree in horizontal plane projection.
Wherein be filled with filler or catalyst between every 2 pieces of sieve plates.
Wherein filler is selected from the one in the loose heaps such as Raschig ring, Pall ring, rectangular saddle ring, woven wire or structured packing; Wherein catalyst is selected from the one in solid supported type, molecular sieve type, solid acid.
The invention has the beneficial effects as follows, by the below of downspout scattering device in whole sieve plate face, instead of chord downcomer and the territory, liquid receiving area of traditional sieve-plate tower both sides, change traditional sieve-plate tower to concentrate and fall liquid or by liquid mode, substantially increase effective mass transfer area of sieve plate, add gas-liquid handling capacity; Liquid on sieve plate is evenly down to lower floor's sieve plate via the downspout be dispersed in below plate face, thus the carrier of other auxiliary mass transfer such as filler, catalyst or reaction can be filled easily between two pieces of sieve plates, make the space between every two pieces of sieve plates also be able to efficiency utilization, make whole tower body space give full play to mass transfer centrifugation or complete the processes such as chemical reaction while separation.
Accompanying drawing explanation
Fig. 1 is that the sectional arrangement drawing of liquid sieve-plate tower in tower body equipment falls in a kind of dispersion of the present invention;
Fig. 2 is the top view that sieve plate in liquid sieve-plate tower falls in a kind of dispersion of the present invention;
Fig. 3 is the partial sectional view that sieve plate in liquid sieve-plate tower falls in a kind of dispersion of the present invention.
In figure, 1. downspout, 2. pore, 3. flange hole, 4. tower tray, 5. sieve plate, 6. tower body.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The invention provides a kind of dispersion and fall liquid sieve-plate tower, comprise cylindric tower body 6 as shown in Figure 1, be axially installed with some sieve plates 5 along tower body 6, if want improve mass-transfer efficiency or complete certain chemical reaction simultaneously, between every 2 pieces of sieve plates 5, also can fill the filler for mass transfer or catalyst.
As shown in Figure 2, sieve plate 5 comprises tower tray 4, the middle part (in dashed circle region) of tower tray 4 is evenly provided with some pores 2 and some downspouts 1, the edge of tower tray 4 evenly has some flange holes 3, sieve plate 5 is arranged on tower body 6 by flange hole 3 sealing, every 3 pores 2 form a pore group in equilateral triangle arrangement, downspout 1 is arranged on the center position of the equilateral triangle that each pore group is formed, and wherein the quantity of pore group and the quantity of downspout 1 depend on and the effective perforated area on tower tray 4.
As shown in Figure 3, downspout 1 is the round tube vertically running through tower tray 4, one end port of downspout 1 is concordant with a side surface of tower tray 4, the other end port of downspout 1 is stretched out downwards by the opposite side surface of tower tray 4, the material of downspout 1 and tower tray 4 adopts carbon steel, if mass transfer media has corrosivity, then can adopt the material such as stainless steel or fiberglass.
In conventional design, the internal diameter of downspout 1 is not less than the diameter of pore 2, pitch of holes between each pore 2 is 3 ~ 5 times of pore 2 diameter, the center of circle of downspout 1 is positioned at the center of the pore 2 hole heart apart from the equilateral triangle surrounded, the tube pitch of downspout 1 is 3 ~ 5 times of downspout internal diameter, can effectively prevent excessive liquid from flowing on lower floor's tower tray 4 from pore 2 like this.
During mounted sieve, downspout 1 as shown in Figure 1, is stretched out the port of tower tray 4 downwards down by assembly structure, is arranged on tower body 6 by sieve plate 5 by flange hole 3, also sieve plate 5 can be arranged on the reserved column plate support member of tower body 6 inwall.
The installation of adjacent sieve plate 5 should be staggered the azimuth of integral multiple of 60 degree or 60 degree in horizontal plane projection, like this, the downspout of upper strata column plate will aim at the triangle center place of descending trays not perforate, thus the liquid flow short circuit effectively preventing hydraulic shock to cause, extend the liquid time of staying onboard, ensure effectively carrying out of mass transfer.
The operation principle that liquid sieve-plate tower falls in a kind of dispersion of the present invention is, sieve plate 5 is arranged in tower body 6, gas in tower body 6 moves (in Fig. 1 arrow be gas moving direction) upwards from bottom to top by pore 2, liquid in tower body 6 flows from top to bottom (arrow downward in Fig. 1 is liquid flow direction), liquid on sieve plate 5 flows in the process of lower floor's tower tray 4 via the downspout 1 be dispersed in below tower tray 4, fully contact with upstream gas thus pouring occurs and fall mass transfer, when liquid drenches and drops on tower tray 4, counter-current bubbling or foam contacting is produced with the gas risen from pore 2, thus carry out gas-liquid mass transfer, simultaneously, liquid splash down on lower floor's sieve plate 5 produce percussion, also the mass-transfer progress on sieve plate 5 plate face can be strengthened, after gas-liquid mass transfer, liquid drops on lower one deck sieve plate 5 because the effect of self gravitation is drenched from downspout 1, gas then flows to last layer sieve plate 5 by the promotion of pressure, successively back and forth until complete mass transfer task.
According to mass transfer separation requirement, need in tower body 6 multiple sieve plate 5 to be installed to complete mass transfer task, therefore the installation quantity of sieve plate 5 in tower body 6 is required to determine by mass transfer, the present invention's dispersion falls liquid sieve-plate tower when multistage installation, certain filler can be filled for strengthening mass transport process between the tower tray 4 of every two pieces of sieve plates 5, also suitable catalyst can be loaded as required, to complete the mass transfer separation process with chemical reaction.
Sieve-plate tower of the present invention also can be widely used in the mass transfer separation processes such as rectifying, reactive distillation, absorption, desorb, extraction.
Liquid sieve-plate tower falls in the dispersion of the present invention's one, by offering the many groups of equilateral triangle pore groups be made up of 3 pores 2 on tower tray 4, downspout 1 is arranged in the middle of equilateral triangle pore group, this kind of design can by downspout 1 as far as possible polydispersion on tower tray, in addition, downspout 1 designs in tower tray 4 card, form Lin Jiang district, when multiple sieve plate 5 can be made to work in tower body 6, mass transfer all can be carried out in sieve plate 5 space between any two, this kind of sieve plate 5 is after in tower body 6, multilayer is installed, the whole up and down space of full tower is all at continuous mass transfer, compared to plate column batch (-type) or the stepped mass transfer of traditional regular-type foam operating mode, this design makes the utilization rate in mass transfer space obtain to increase substantially, add the effective mass transfer area area on column plate plate face simultaneously, too increase effective aisle spare of gas and liquid, thus improve the flux of gas and liquid, there is good hydrodynamic performance and mass-transfer performance.
And except form bubbling or foam mass-transfer zone in tower tray plane except, downspout 1 designs below tower tray 4 card, the also reversible flow contact of the space of gas-liquid between two pieces of sieve plates 5, forms pouring and falls mass-transfer zone; Dispersion and the liquid that evenly lands can splash down on the plate face of lower floor's sieve plate 5, forms splash mass-transfer zone again; Owing to evenly falling liquid between two pieces of sieve plates 5, thus the solid phase carrier of other auxiliary mass transfer such as filler, catalyst or reaction can be filled easily between two pieces of sieve plates 5, make the space between every two pieces of sieve plates 5 also can obtain efficiency utilization, whole tower body 6 space is made to give full play to the effect of mass transfer separation, in addition, fall liquid sieve plate due to dispersion eliminate the liquid receiving area of traditional sieve plate both sides and fall liquid zone, the handling capacity of its gas-liquid is greatly improved, also namely disperses to fall liquid sieve plate and there is larger production capacity.
Dispersion can reach space utilization maximization from falling sieve-plate tower, its pore 2 is distributed in whole tower tray 4, can attenuating gas passage, make bubbling evenly, optimize the contact condition of column plate gas-liquid, make gas-liquid contact more abundant, overcome dead band, preliminary experimental results shows, dispersion has good hydrodynamic performance and mass-transfer performance from falling sieve plate.
In the present invention, dispersion is scattered in whole tower tray from falling a large amount of circular downeomers that sieve plate becomes equilateral triangle to distribute, instead of the chord downcomer of traditional sieve-plate tower both sides, installation arrangement from tower plate structure or on column plate has new change, and experiment shows the hydrodynamic performance that this New Type of Tray is good and mass-transfer performance.
The preliminary experimental results of this design shows: under same tower diameter, compared with traditional sieve-plate tower, and the air rising hole area that liquid sieve plate falls in dispersion adds 27.4%; Downspout area is substantially constant, and when this means that liquid measure remains unchanged, gas flux can increase by 27.4%, and therefore, the gas flux that liquid sieve-plate tower falls in dispersion is significantly greater than common sieve-plate tower.
Under suitable gas-liquid load condition, dispersion falls liquid sieve plate compared with traditional sieve plate, and its mass-transfer efficiency improves 0.2 ~ 7.5%, anode drop reduces 17.0% ~ 40.3%, and liquid sieve plate uniform gas-liquid distribution falls in dispersion, leaking liquid amount is less, and mist entrainment is less.
The present invention has following feature: effective mass transfer area that liquid sieve plate falls in dispersion comprises Lin Jiang district, froth zone and water landing area, and the flux of tower tray, utilization rate increase, thus improves disposal ability and mass-transfer efficiency; The downspout of adjacent two layers column plate staggers the design of certain position mutually, gas phase is passed through along liquid stream passageway, gas phase drag major part derives from liquid film, greatly reduce plate pressure drop, applicable filler or catalyst can also be filled as required to strengthen the processes such as transmission, reaction between adjacent two layers sieve plate, the shortcoming such as effectively overcome that liquid level drop on traditional sieve-plate tower plate is comparatively large, gas-liquid flux is less, mass-transfer efficiency is lower, space between sieve plate cannot utilize, can be widely used in the separation process of chemical industry mass transfer.
Claims (9)
1. a liquid sieve-plate tower falls in dispersion, it is characterized in that: comprise cylindric tower body (6), is axially installed with some sieve plates (5) along tower body (6).
2. liquid sieve-plate tower falls in one dispersion according to claim 1, it is characterized in that: described sieve plate (5) comprises tower tray (4), the middle part of tower tray (4) is evenly provided with some pores (2) and some downspouts (1), the edge of tower tray (4) evenly has some flange holes (3), and sieve plate (5) is arranged on tower body by flange hole (3) or is arranged on the reserved column plate support member of tower body (6) inwall.
3. liquid sieve-plate tower falls in one dispersion according to claim 2, it is characterized in that: every 3 described pores (2) form a pore group in equilateral triangle arrangement, the center position of the equilateral triangle that each pore group is formed arranges a downspout (1).
4. liquid sieve-plate tower falls in the one dispersion according to Claims 2 or 3, it is characterized in that: described downspout (1) is the round tube vertically running through tower tray (4), the upper end mouth of pipe of downspout (1) is concordant with the uper side surface of tower tray (4), and the lower end mouth of pipe of downspout (1) stretches out 20 ~ 50mm vertically downward by the downside surface of tower tray (4).
5. liquid sieve-plate tower falls in one dispersion according to claim 4, it is characterized in that: the internal diameter of described downspout (1) is not less than the diameter of pore (2), pitch of holes between each pore (2) is 3 ~ 5 times of pore (2) diameter, the center of circle of downspout (1) is positioned at pore (2) the hole heart apart from the leg-of-mutton center surrounded, and the tube pitch of downspout (1) is 3 ~ 5 times of downspout internal diameter.
6. liquid sieve-plate tower falls in one dispersion according to claim 5, it is characterized in that: the material of described downspout (1) and tower tray (4) is carbon steel, stainless steel or fiberglass.
7. liquid sieve-plate tower falls in one dispersion according to claim 1, it is characterized in that: the installation of adjacent 2 pieces of sieve plates (5) should be staggered the azimuth of integral multiple of 60 degree or 60 degree in horizontal plane projection.
8. liquid sieve-plate tower falls in one dispersion according to claim 1, it is characterized in that: be filled with filler or catalyst between every 2 pieces of sieve plates (5).
9. liquid sieve-plate tower falls in one dispersion according to claim 8, it is characterized in that: described filler is selected from the one in the loose heaps such as Raschig ring, Pall ring, rectangular saddle ring, woven wire or structured packing; Described catalyst is selected from the one in solid supported type, molecular sieve type, solid acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819703.7A CN104524801B (en) | 2014-12-25 | 2014-12-25 | A kind of dispersion descending liquid sieve-plate tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819703.7A CN104524801B (en) | 2014-12-25 | 2014-12-25 | A kind of dispersion descending liquid sieve-plate tower |
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| Publication Number | Publication Date |
|---|---|
| CN104524801A true CN104524801A (en) | 2015-04-22 |
| CN104524801B CN104524801B (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410819703.7A Expired - Fee Related CN104524801B (en) | 2014-12-25 | 2014-12-25 | A kind of dispersion descending liquid sieve-plate tower |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621476A (en) * | 2018-11-26 | 2019-04-16 | 延安大学 | Disperse descending liquid valve tower |
| CN110124454A (en) * | 2018-02-08 | 2019-08-16 | 中石化广州工程有限公司 | A kind of methanol air water cleaning of evaporator |
| CN110812895A (en) * | 2019-11-15 | 2020-02-21 | 贵州大学 | Continuous low-pressure gas-liquid separation device |
| CN110898627A (en) * | 2019-12-24 | 2020-03-24 | 安徽理工大学 | Sieve plate convenient for liquid to contact with gas |
| CN116987586A (en) * | 2023-07-28 | 2023-11-03 | 安及义实业（上海）有限公司 | Bioreactor and continuous flow reaction system |
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| JPS5496480A (en) * | 1978-01-18 | 1979-07-30 | Nisshin Steel Co Ltd | Dispersed phase supplying method for multiistage pulsing type extracting column |
| CN102008879A (en) * | 2010-10-14 | 2011-04-13 | 中化化肥有限公司 | Desulfurizing tower |
| CN103480243A (en) * | 2013-09-21 | 2014-01-01 | 南京瑞旭产品技术有限公司 | Sieve-plate tower |
| CN204364924U (en) * | 2014-12-25 | 2015-06-03 | 延安大学 | Liquid sieve-plate tower falls in dispersion |
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2014
- 2014-12-25 CN CN201410819703.7A patent/CN104524801B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5496480A (en) * | 1978-01-18 | 1979-07-30 | Nisshin Steel Co Ltd | Dispersed phase supplying method for multiistage pulsing type extracting column |
| CN102008879A (en) * | 2010-10-14 | 2011-04-13 | 中化化肥有限公司 | Desulfurizing tower |
| CN103480243A (en) * | 2013-09-21 | 2014-01-01 | 南京瑞旭产品技术有限公司 | Sieve-plate tower |
| CN204364924U (en) * | 2014-12-25 | 2015-06-03 | 延安大学 | Liquid sieve-plate tower falls in dispersion |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124454A (en) * | 2018-02-08 | 2019-08-16 | 中石化广州工程有限公司 | A kind of methanol air water cleaning of evaporator |
| CN109621476A (en) * | 2018-11-26 | 2019-04-16 | 延安大学 | Disperse descending liquid valve tower |
| CN110812895A (en) * | 2019-11-15 | 2020-02-21 | 贵州大学 | Continuous low-pressure gas-liquid separation device |
| CN110898627A (en) * | 2019-12-24 | 2020-03-24 | 安徽理工大学 | Sieve plate convenient for liquid to contact with gas |
| CN116987586A (en) * | 2023-07-28 | 2023-11-03 | 安及义实业（上海）有限公司 | Bioreactor and continuous flow reaction system |
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| Publication number | Publication date |
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| CN104524801B (en) | 2016-06-08 |
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