CN104524802B - Multistage baffling calotte column plate - Google Patents
Multistage baffling calotte column plate Download PDFInfo
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- CN104524802B CN104524802B CN201410683755.6A CN201410683755A CN104524802B CN 104524802 B CN104524802 B CN 104524802B CN 201410683755 A CN201410683755 A CN 201410683755A CN 104524802 B CN104524802 B CN 104524802B
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Abstract
Multistage baffling calotte column plate, comprise column plate body and several calottes, calotte all runs through and is arranged in column plate body, calotte inside is provided with the current limiting plate of several inclinations, current limiting plate is separately positioned on the inner one group of opposing sidewalls of calotte, upper end and the calotte of current limiting plate are fixed, current limiting plate tilts to lower end from upper end, between the lower end of current limiting plate and calotte inwall, leave gap, the upper surface of described current limiting plate is provided with the flow-stopping plate of several levels, at the bottom of the bottom of calotte is provided with cap, at the bottom of described cap and between calotte, be reserved with space. The present invention is fixed in gas-liquid mass transfer tower as an overall structure, increases contact mass transfer time and the contact area of gas and liquid, improves mass transfer effect.
Description
Technical field
The present invention relates to multistage baffling calotte column plate, it is a kind of column plate being arranged in chemical tower equipment, belongs to chemical industry equipment field.
Background technology
Tower is conventional a kind of gas-liquid, liquid liquid contact mass transfer equipment of petroleum and chemical industry field, mainly comprises board-like column plate and material filling type column plate. High efficiency packing column plate effect is high, and production capacity is large, but because cost is high, and is not suitable for high pressure and the easy occasion of coking. With respect to packed tower, common plate column, because it is cheap, is widely used at normal pressure and high pressure operating mode China.
But because liquid-gas ratio is very large, for example the liquid gas mol ratio of water washing decarburization is up to more than 100 in the operating modes such as large liquid measure absorption, rectifying. For this type of operating mode, common plate column often also can be made the most of the advantage: it is long-pending that the liquid receiving area on column plate has often occupied very large tower section, causes the disposal ability of tower low. As adopt packed tower, and for can be by large liquid measure, tower diameter can design very greatly, and gas is with extremely low gas speed by packing layer, and the little efficiency of mass transfer is low, and water consumption is large, and energy consumption is high.
The advantages such as it is large that fixed float valve plate has production capacity, and plate efficiency is high, and processing and maintenance cost are low, have a wide range of applications at petrochemical industry. At present, industrial fixed float valve plate is mainly circular fixing float valve and two kinds of float valves are fixed in bar shaped, these two kinds of fixing float valves mainly contain following characteristics: directly in column plate plane, go out circular and bar shaped projection, using its rim openings as gas phase channel, before and after valve block, respectively there is a valve leg to be connected with column plate, support valve block, the angle of valve leg and column plate plane is about 90 degree. For round valve, gas vent is a circular arc, from the gas of outlet first half ejection, liquid stream plate is had to certain impetus, and from the liquid that exports latter half of ejection, liquid stream plate is had to interception, and front latter two effect weakens mutually. For the fixing float valve of bar shaped, gas emission direction is vertical with liquid flow path direction, does not only push away liquid effect, and the gas direction of adjacent two valve blocks ejection is relative, cause serious in spray phenomenon, easily cause back-mixing and entrainment, weaken the mass transfer function of column plate, reduce plate efficiency. Jet tray is provided with the tongue hole of inclination, make the direction that sprays air-flow approach level, thereby entrainment greatly reduces, air-flow has progradation to liquid stream simultaneously, and therefore gas-liquid flow handling capacity is all higher, and gas flux is large, liquid level drop is little, without air-teturning mixed phenomenon, can reduce plate pressure drop. It is high that jet tray has plate efficiency, and on plate, liquid layer is thinner, the advantage that column plate Pressure Drop is little. But jet tray is poor to the adaptive capacity of load fluctuation, and operating flexibility is little, serious Vapor Entrainment phenomenon may cause plate efficiency to decline, and simultaneously because liquid layer on column plate is too thin, liquid residence time is short, and gas-liquid contact is insufficient, and plate efficiency significantly reduces.
Compound overflow-type column plate compounded mix and the throngh flowing type tray compounded mix of mainly containing of column plate and filler, because throngh flowing type tray is simple in structure, it is compound to be easy to filler, is ideal column plate filler complex form. But existing dual-flow tray compounded mix, is restricted because the liquid flooding of structured packing makes the elasticity of composite plate and load-bearing capacity.
Inventor finds that through retrieval the patent No. 200510094252.6 discloses the fixing float valve of rhombus. But due to the existence of two valve legs, can not solve completely spray and air-teturning mixed phenomenon. At industrial departments such as petrochemical industry, petroleum refining, chemical industry, light industry, environmental protection, medicine and atomic energy, column plate and filler are widely used in distillation, absorption, extraction, absorption, washing, the unit processes in chemical synthesis such as cooling. Filler has the advantages such as separative efficiency is high, pressure drop is little, disposal ability is large, but cost is larger, and operating flexibility is little, requires high to supporting tower internals; Large, the anti-obstruction of operating flexibility of tray, cost is low, separative efficiency is relatively large, but pressure drop will be larger, and disposal ability is lower. Column plate is by having or not downspout can be divided into overflow-type column plate and throngh flowing type tray, and by contrast, existing throngh flowing type tray is simple in structure, and in tower, space availability ratio is high, and cost is low, and disposal ability is large, but vapour-liquid is short time of contact, and mass-transfer efficiency is low, and operating flexibility is little. Desirable tower internals should have low pressure drop, high efficiency, large operating flexibility, anti-obstruction, low cost, large disposal ability and the high characteristic of Ta Nei space availability ratio simultaneously. By column plate and filler compound be one of the effective way of tower internals of realizing ideal. Fibre bundle filler is the high surface linked network formula flexible filler that a kind of liquid phase of exploitation is recently continuous phase, and more than liquid flooding high cycle speed reaches 8m/s, mass-transfer efficiency is high, and pressure drop is only the 1/2-1/3 of common structured packing.
Inventor also finds that through retrieval patent 201310401260.5, patent name are vertical blown film column plate, and it comprises a horizontal column plate and several calottes; Horizontal column plate is provided with several plate holes, is provided with spacing between plate hole; The quantity of orifice plate equates with the quantity of described calotte; Calotte comprises vertical cylinder, top cover and the collet of both ends open, and top cover is arranged at respectively upper open end and the lower open end place of described vertical cylinder with described collet, and is equipped with gap between top cover and institute's collet and described vertical cylinder; Vertical cylinder is fixed in described plate hole, and is provided with gap between vertical cylinder and described horizontal column plate; The shape of cross section and the shape of base of vertical cylinder are all identical with the shape of described plate hole, and the projection of top cover on horizontal plane can shade described in vertically tin. The form that the present invention can make gas blow brokenly liquid film with level is passed through column plate, and comparing traditional column plate does not need to overcome liquid layer static pressure, so plate pressure drop is little. But the present invention need to install calotte one by one, and installing engineering is great, and each calotte all needs at right angle setting, and requiring of installation is high, in tower, the periodic inspection cost of calotte is high.
Summary of the invention
In order to solve the problem of above-mentioned existence, the invention discloses multistage baffling calotte column plate, concrete technical scheme is as follows:
Multistage baffling calotte column plate, comprise column plate body and several calottes, described calotte all runs through and is arranged in column plate body, the surrounding of described calotte is fixedly connected with column plate body, calotte is mutually vertical with column plate body, calotte inside is provided with the current limiting plate of several inclinations, the upper end of described current limiting plate and the inwall of calotte are fixed, the lower end of described current limiting plate is unsettled, current limiting plate is crisscross arranged in calotte inside, the inwall of described current limiting plate and calotte is α angle, described α angle is acute angle, the upper surface of described current limiting plate is provided with the flow-stopping plate of several levels, at the bottom of the bottom of calotte is provided with cap, at the bottom of described cap and between calotte, be reserved with space.
Described calotte cross section is rectangle, and the calotte minor face of described current limiting plate and rectangle is fixed.
The bottom height of described current limiting plate is higher than the top height that is positioned at current limiting plate being below adjacent.
At the bottom of described cap, be fixedly connected with calotte by connection leg.
Between the surrounding of described calotte and column plate body, leave space.
The surrounding of described calotte and column plate body are sealedly and fixedly connected.
The width of described flow-stopping plate is identical with current limiting plate, and the length of all flow-stopping plates is identical.
Operation principle of the present invention and beneficial effect are:
The present invention is fixed in gas-liquid mass transfer tower as an overall structure, and column plate body is horizontally set in gas-liquid mass transfer tower, and the volume inwall of the surrounding of column plate body and gas-liquid mass transfer tower is fixed, and column plate body is vertical each other with gas-liquid mass transfer tower.
In use procedure, gas medium enters in tower from the bottom of gas-liquid mass transfer tower, discharges from the top of gas-liquid mass transfer tower, and liquid medium enters in tower from the top of gas-liquid mass transfer tower, discharges from the bottom of gas-liquid mass transfer tower. Gas medium contacts in gas-liquid mass transfer tower with liquid medium, and mass transport process occurs.
Liquid medium enters in calotte from the top of calotte, liquid drops on current limiting plate, because current limiting plate is obliquely installed, so liquid is all the lower ends that flow to current limiting plate from the upper end of current limiting plate on each current limiting plate, and below the lower end of a current limiting plate above flows to the upper end of a current limiting plate, flow down successively, increase liquid and flow through path in gas-liquid mass transfer tower, increase the liquid surface area that liquid provides in trickling process, larger mass transfer contact area is provided.
Gas medium is from the bottom of gas-liquid mass transfer tower enters in tower, gas will enter in calotte, first at the bottom of will walking around cap, the process at the bottom of cap of walking around gas can reduce the flowing velocity of gas, gas evenly rises and enters in calotte from the surrounding at the bottom of cap, the full and uniform contact of liquid of gas and surrounding at the bottom of cap, increases the area of contact mass transfer. Gas enters behind calotte inside, and gas vertical lifting can enter into the space between current limiting plate and calotte inwall, thereby rising, restriction gas straight line directly just from calotte, goes out, and the route of gas process and extending with the time of contact of liquid.
Brief description of the drawings
Fig. 1 is structural representation of the present invention,
Fig. 2 be the A of Fig. 1 to view,
Reference numerals list: 1-column plate body, 2-calotte, 3-current limiting plate, 4-flow-stopping plate, at the bottom of 5-cap, 6-connection leg.
Detailed description of the invention
Below in conjunction with detailed description of the invention, further illustrate the present invention. Should understand following detailed description of the invention is only not used in and limits the scope of the invention for the present invention is described.
The present invention has two embodiment:
Embodiment 1:
Fig. 1 is structural representation of the present invention, as seen from the figure, multistage baffling calotte 2 column plates, comprise column plate body 1 and several calottes 2, described calotte 2 all runs through and is arranged in column plate body 1, the surrounding of described calotte 2 is fixedly connected with column plate body 1, calotte 2 is mutually vertical with column plate body 1, calotte 2 inside are provided with the current limiting plate 3 of several inclinations, the described neighbouring current limiting plate 3 direction symmetries that tilt, current limiting plate 3 is separately positioned on the inner one group of opposing sidewalls of calotte 2, the upper end of current limiting plate 3 and calotte 2 are fixing, current limiting plate 3 tilts to lower end from upper end, between the lower end of current limiting plate 3 and calotte 2 inwalls, leave gap, the upper surface of described current limiting plate 3 is provided with the flow-stopping plate 4 of several levels, the bottom of calotte 2 is provided with at the bottom of cap 5, at the bottom of described cap 5 and calotte 2 between be reserved with space. calotte 2 cross sections are rectangle, and described current limiting plate 3 is fixed with calotte 2 minor faces of rectangle. the bottom height of current limiting plate 3 is higher than the top height that is positioned at current limiting plate 3 being below adjacent. at the bottom of cap, 5 are fixedly connected with calotte 2 by connection leg 6. the width of flow-stopping plate 4 is identical with current limiting plate 3, and the length of all flow-stopping plates 4 is identical. between the surrounding of calotte 2 and column plate body 1, leave space.
In this embodiment, gas and liquid can pass through calotte 2 inside or calotte 2 surroundings, and the contact mass transfer of liquids and gases can complete in the space of calotte 2 surroundings, or completes in calotte 2 inside.
Flow-stopping plate 4 on current limiting plate 3 can effectively prevent that liquid inertia on current limiting plate 3 from declining, and changes the flow direction of liquid on current limiting plate 3, and extends the route of flowing through of liquid, extends the Surface Contact mass transfer of gas and liquid.
Embodiment 2: the surrounding of calotte 2 and column plate body 1 are sealedly and fixedly connected, other structures are all identical with embodiment 1.
In this embodiment, liquids and gases all can only realize through the inside of calotte 2 that gas rises and liquid decline, realize the contact mass transfer of liquids and gases, so also can reach more stable and desirable mass transfer effect.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme being made up of above technical characterictic.
Taking above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this invention technological thought, carry out various change and amendment completely. The technical scope of this invention is not limited to the content on description, must determine its technical scope according to claim scope.
Claims (7)
1. multistage baffling calotte column plate, it is characterized in that comprising column plate body and several calottes, described calotte all runs through and is arranged in column plate body, the surrounding of described calotte is fixedly connected with column plate body, calotte is mutually vertical with column plate body, calotte inside is provided with the current limiting plate of several inclinations, the upper end of described current limiting plate and the inwall of calotte are fixed, the lower end of described current limiting plate is unsettled, current limiting plate is crisscross arranged in calotte inside, the inwall of described current limiting plate and calotte is α angle, described α angle is acute angle, the upper surface of described current limiting plate is provided with the flow-stopping plate of several levels, at the bottom of the bottom of calotte is provided with cap, at the bottom of described cap and between calotte, be reserved with space.
2. multistage baffling calotte column plate according to claim 1, is characterized in that described calotte cross section is rectangle, and the calotte minor face of described current limiting plate and rectangle is fixed.
3. multistage baffling calotte column plate according to claim 2, is characterized in that the bottom height of described current limiting plate is higher than the top height that is positioned at current limiting plate being below adjacent.
4. multistage baffling calotte column plate according to claim 1, is characterized in that being fixedly connected with calotte by connection leg at the bottom of described cap.
5. multistage baffling calotte column plate according to claim 1, is characterized in that leaving space between the surrounding of described calotte and column plate body.
6. multistage baffling calotte column plate according to claim 1, is characterized in that the surrounding of described calotte and column plate body are sealedly and fixedly connected.
7. multistage baffling calotte column plate according to claim 1, is characterized in that the width of described flow-stopping plate is identical with the width of current limiting plate, and the length of all flow-stopping plates is identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410683755.6A CN104524802B (en) | 2014-11-25 | 2014-11-25 | Multistage baffling calotte column plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410683755.6A CN104524802B (en) | 2014-11-25 | 2014-11-25 | Multistage baffling calotte column plate |
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| CN104524802A CN104524802A (en) | 2015-04-22 |
| CN104524802B true CN104524802B (en) | 2016-05-04 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104492116B (en) * | 2014-11-25 | 2016-04-27 | 南通苏通分离工程科技有限公司 | Gradient step calotte column plate |
| CN107344063A (en) * | 2017-07-31 | 2017-11-14 | 中国科学院广州能源研究所 | A kind of hydrate continuously separates the apparatus and method of gas |
| CN110937646A (en) * | 2019-10-24 | 2020-03-31 | 光大环境科技（中国）有限公司 | Denitrogenation column plate for ammonia still |
| CN114100177A (en) * | 2021-11-11 | 2022-03-01 | 钱卿瑜 | Plate-type packing rectifying tower |
| CN114210083A (en) * | 2021-12-13 | 2022-03-22 | 钱卿瑜 | Plate-type packing rectifying tower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4698138A (en) * | 1985-05-29 | 1987-10-06 | Mobil Oil Corporation | De-entrainment chimney and method of operation |
| CA2433189C (en) * | 2000-12-21 | 2006-11-07 | Fluor Corporation | Methods and apparatus for mixing fluids |
| CN101015748A (en) * | 2006-12-28 | 2007-08-15 | 杜佩衡 | Continuous stereo-spray knockout tower |
| CN201082364Y (en) * | 2007-09-12 | 2008-07-09 | 中国石油大学(华东) | Injection column plate |
| CN201894867U (en) * | 2010-12-10 | 2011-07-13 | 湖南有色郴州氟化学有限公司 | Anhydrous hydrofluoric acid rectification tower |
| CN102908798B (en) * | 2012-10-22 | 2014-01-15 | 中国石油大学(华东) | Composite column plate with coupling of inclined strip-shaped three-dimensional cover hood and regular fillers |
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