CN211865042U - Gas phase downward jet flow distributed tower plate - Google Patents
Gas phase downward jet flow distributed tower plate Download PDFInfo
- Publication number
- CN211865042U CN211865042U CN201922131441.6U CN201922131441U CN211865042U CN 211865042 U CN211865042 U CN 211865042U CN 201922131441 U CN201922131441 U CN 201922131441U CN 211865042 U CN211865042 U CN 211865042U
- Authority
- CN
- China
- Prior art keywords
- gas
- column plate
- liquid
- plate
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model provides a distributed column plate of gaseous phase down efflux opens on horizontal column plate has the gas lift hole, installs the fluidic element on the gas lift hole, and the fluidic element comprises a person in charge and a plurality of branch pipes, and gas rises from lower one deck column plate, loops through gas lift hole and the perpendicular downward efflux of fluidic element, jets into the flowing liquid on the column plate, overflows the liquid layer after the mass transfer with liquid intensive mixing, rises again in the fluidic element of last one deck column plate. The gas can be uniformly distributed, the continuity of liquid phase flow is interrupted, the liquid surface fall on the plate surface is reduced, and the liquid phase is uniformly distributed; the gas-liquid phase mass transfer and heat transfer effects are improved; the method allows large-handling capacity production and can ensure that the pressure drop of the tower plate is not greatly increased under the large-handling capacity; the opening rate on the tower plate is obviously improved; the tower plate has no leakage; effectively reducing entrainment; the requirement on the quality of raw materials is not high, and the jet element is not easy to block.
Description
Technical Field
The utility model relates to a column plate structure of mainly used oil and chemical processes to and on-board unit fitting.
Background
In the existing tower plate gas-liquid mass transfer process, an opening is formed in the tower plate, gas enters from the lower tower plate and is in two-phase contact with overflow fluid of the upper tower plate to carry out mass transfer, and then separation is completed in the upper space of the tower plate. In the traditional configuration, liquid descends through the downcomer and generates drag force when flowing through the tower plate, the drag force can generate liquid level head on the surface of the tower plate, and the liquid level head can cause the gas to generate uneven distribution through the openings of the tower plate; while the gas passes through the liquid layer upward through the openings of the tray, the leakage inevitably occurs at low gas velocities. Along with the maximization of tower equipment, the horizontal scale of the tower plate is continuously increased, gas-liquid distribution is more and more uneven, the gas velocity of a leakage vanishing point is more and more large, even the phenomenon that leakage and entrainment simultaneously occur occurs, the gas-liquid mass transfer and heat transfer efficiency are influenced, and the improvement of the efficiency of the tower plate is greatly inhibited. Namely, the large tower multiphase flow operation is more prone to non-linearity and non-ideality of operation on the plate caused by uneven gas-liquid distribution, and obvious amplification effect is generated.
The amplification effect of the traditional gas upgoing tower plate is mainly caused by the following reasons: the huge liquid-holding inertia force of the tower plate and the randomness of hole operation are mutually promoted by the coexistence of the two. Although various measures are taken on overcoming the problems of uneven gas-liquid distribution and improving the amplification effect of the tower plate, such as properly reducing the height of a weir of an outlet of the tower plate and the strength of liquid flow and properly increasing a baffle structure so as to reduce the liquid holding inertia and inhibit the fluctuation of a liquid layer; the aperture is properly increased and the opening number is properly increased so as to reduce the randomness of the pore operation; appropriately increasing the dry plate pressure drop to increase the resistance to tray leakage; the tray spacing is suitably reduced to improve the pressure wave field inside the liquid-holding bed on the tray. In actual production, various technical measures for reducing the liquid-holding inertia force of the tower plate, relieving the fluctuation degree of the liquid layer and weakening the randomness of hole operation coexist, for example, the multi-overflow design reduces the inertia force of the pedal by reducing the liquid flow length on the tower plate, but reduces the efficiency of the tower plate, increases the complexity of the structure in the tower and solves the problem of uneven distribution of the flow of each overflow gas and liquid. In conclusion, the single measure is difficult to greatly improve the amplification effect, and various measures need to be comprehensively considered, so that the existing gas upflow type tower plate is not economical any more. The urgent need is: a new method for improving the gas-liquid distribution uniformity on the large-scale tower plate is explored, a brand new gas-liquid operation configuration and a brand new gas-liquid contact mode are developed, the congenital defects on the configuration of the traditional tower equipment and the experiential property of the design process are fundamentally eliminated, and the operation performance and the mass transfer efficiency of the tower equipment are further improved.
Related patent information is not found in the aspect of efficient gas-liquid dispersive trays.
In terms of fluidic elements and devices:
CN1532002A discloses a fluidic element that uses the pressure difference generated by the fluid ejected from a nozzle to make the velocity of the fluid flowing out of the nozzle vary according to a specific period.
CN101234820A discloses a self-suction jet water distribution device, which is applied to a sewage treatment reactor.
CN102942251A discloses a multi-nozzle type jet flow micro-nano bubble aerator, which is mainly applied to the aeration equipment industry.
CN201614317U discloses a gas-liquid reinforced mass transfer device, which forms gas-liquid impact flow in the gas-liquid distribution process, and the gas phase is dispersed into tiny bubbles, thereby improving the mass transfer efficiency, and belonging to the field of environmental protection.
The gas-liquid contact mode that goes upward to current column plate gas is not enough, the utility model aims to provide a distributed double-phase contact configuration of gaseous downlink efflux for solve on the column plate because the uneven column plate operation problem that leads to of gas-liquid distribution, make gas phase distribution can regulate and control equipartition, column plate do not have leakage, pressure drop and mist and smuggle performance such as smuggle secretly and improve, and have advantages such as high mass transfer performance.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a distributed tower plate, which consists of a horizontal tower plate and a gas phase downward jet element, wherein a plurality of gas lifting holes are arranged on the horizontal tower plate, and the gas phase downward jet element is assembled on each gas lifting hole;
the gas-phase downstream jet element is composed of a main pipe and a plurality of branch pipes, a seal head is arranged at one end of the main pipe as a top end, a plurality of branch pipe assembly holes are formed in the side wall, close to the top end, of the pipe body of the main pipe, each branch pipe assembly hole is provided with one branch pipe, and the branch pipes are L-shaped and have the same orientation as the direction of the main pipe orifice.
The utility model provides a distributed tower board, wherein, preferably, the curved portion of branch pipe is ninety degree smooth and sly crooked.
The utility model provides a distributed column plate, wherein, the preferred is, evenly set up on being responsible for the pipe shaft lateral wall of same circumference in a plurality of branch pipe pilot holes, quantity is 4 ~ 8, the mouth of pipe of a plurality of branch pipes is equal height.
The utility model provides a distributed column plate, wherein, preferentially, be responsible for and the branch pipe is cylindricly.
The utility model provides a distributed column plate, wherein, preferentially, the gas lift hole aperture slightly is greater than and is responsible for the external diameter, is responsible for the bottom and stretches into to column plate and column plate seamless welding.
The utility model provides a distributed column plate, wherein, preferentially, be responsible for the bottom and stretch into 0.5 ~ 5 centimetres under the column plate.
The utility model provides a distributed column plate, wherein, the preferred is that the branch pipe is deep to be responsible for 1 ~ 5 millimeters via the branch pipe pilot hole.
The utility model provides a distributed column plate, wherein, the preferred, the head is the flat top, and its edge is rounding off with being responsible for the pipe shaft lateral wall.
According to some embodiments of the present invention, the present invention can also be described as:
a gas phase downward jet flow distributed tower plate is characterized in that a plurality of air lifting holes are formed in a horizontal tower plate, jet flow elements are installed on the air lifting holes and consist of a main pipe and a plurality of branch pipes, the bottom of the main pipe is connected with the air lifting holes, a top cover seal head is arranged at the top end of the main pipe, a plurality of holes are formed in the upper end of the main pipe in a surrounding mode, each hole is connected with an L-shaped branch pipe, and the pipe orifice of the L-shaped branch pipe faces downwards; the gas rises from the next tower plate, passes through the gas rising hole and the jet element in sequence, vertically jets downwards, is injected into flowing liquid on the tower plate, is fully mixed with the liquid, overflows a liquid layer after mass transfer and heat transfer, and then rises into the jet element on the upper tower plate.
According to the utility model discloses a characteristics are equipped with horizontal column plate in the tower, and it has a plurality of gas lift holes to open on the column plate, installs the fluidic element on the gas lift hole, and gas rises from the next floor column plate, loops through gas lift hole and the perpendicular downward efflux of fluidic element, jets into in the flowing liquid on the column plate, overflows the liquid layer after the mass transfer heat transfer with liquid intensive mixing, in the fluidic element of the last floor column plate of rising.
The utility model discloses recommend the person in charge for cylindrical straight tube, the branch pipe is crooked cylindrical pipeline.
The main pipe is preferably provided with 4-8 branch pipes, and the branch pipes are preferably uniformly distributed at equal heights. The gas is uniformly distributed through the uniform arrangement of the main pipe and the branch pipe openings of the jet flow element, and the continuity of liquid phase flow is broken in the process that the gas vertically penetrates into the liquid layer, so that the large liquid level drop generated by the increase of the flow is weakened, and the liquid phase is uniformly distributed.
The utility model discloses its curved part of branch pipe is ninety degrees rounding off best, and the gas jet is perpendicular efflux downwards when spouting the branch mouth of pipe. When gas enters the main pipe from the next layer of tower plate, the lifting of the first kinetic energy is completed, and after the gas enters the branch pipe, the lifting of the second kinetic energy is completed, so that the initial kinetic energy of gas jet flow is improved, the jet flow depth in a liquid phase is increased, the gas-liquid phase contact area is increased, and the mass and heat transfer effect is improved. The diameter and height of the main pipe are determined by the tower treatment capacity and the jet flow condition; the size and number of branch pipes are determined by the size of the main pipe, the designed jet flow gas velocity and the conditions on the tower plate. The bent part of the branch pipe of the jet flow element is rounded by ninety degrees so as to reduce the kinetic energy loss of the gas in the pipe and improve the gas velocity at the outlet as much as possible.
The utility model discloses a gas lift hole aperture is unanimous with the person in charge external diameter among the concrete example, is responsible for the afterbody and stretches into the column plate below and with column plate seamless welding. The main pipe of the jet flow element is welded with the plate surface, and liquid leakage does not exist. The downward pipe orifice of the branch pipe is positioned above the liquid level. The gas phase vertical downward jet flow is negative buoyancy jet flow, and the height of the main pipe is adjusted, so that the gas phase jet flow is positioned on the liquid surface to jet flow, namely, the obvious condition that the branch pipe mouth is submerged by the liquid phase does not occur in the mass transfer process, the plate pressure drop can be ensured to be approximately equal to the dry plate pressure drop, and the pressure drop problem of the tower plate in large treatment capacity can be improved. As the gas descends to contact with the liquid phase, the arrangement of the jet flow elements on the plate surface is free, and the reserved edge area of the traditional gas ascending tower plate is not needed to prevent the supporting beam and the like from blocking the orifice, so that the aperture ratio of the tower plate is increased. When the jet flow element is installed on the plate surface, the jet flow element is installed above the air lifting hole, the tail part of the main pipe extends into the lower portion of the tower plate by 0.5-5 cm, and entrainment of mist of the tower plate at the lower layer can be effectively reduced to enable the mist to enter the upper layer.
The utility model discloses a branch pipe and person in charge junction are deepened for being responsible for 1 ~ 5 millimeters in the branch pipe best. The branch pipe of the jet flow element extends into the main pipe by a plurality of millimeters, and when liquid drops or spray of the lower tower plate enter the jet flow element of the upper tower plate, the entrainment in the pipe can be effectively reduced, so that the gas in the branch pipe is as close to a single phase as possible.
The utility model discloses a be responsible for the top cap on top preferably adopts the form of flat top plus marginal fillet and be responsible for the column connection to reduce gaseous kinetic energy loss.
From top to bottom, the utility model discloses following beneficial effect has:
1. by utilizing the gas phase downward jet flow dispersion type tower plate, gas is uniformly distributed through the jet flow element, the continuity of liquid phase flow is broken, the liquid surface fall on the plate surface is reduced, the liquid phase is uniformly distributed, and the plate efficiency is improved.
2. The matching of the main pipe and the branch pipe of the jet element can effectively improve the initial speed of gas jet and improve the mass transfer and heat transfer effects of gas and liquid phases.
3. The gas phase downward jet flow dispersion type tower plate allows large-throughput production, and the height adjustment of the jet flow element can ensure that the pressure drop of the tower plate cannot be greatly increased under large throughput.
4. The gas phase downward jet flow dispersive tower plate has no leakage problem.
5. The gas descending scheme can obviously improve the aperture ratio on the tower plate and increase the efficiency of the tower plate.
6. The internal structure of the jet flow element and the mounting structure on the plate surface can effectively reduce entrainment and improve plate efficiency.
7. The jet flow mode on the liquid level of the tower plate has low requirement on the quality of raw materials and is not easy to block a jet flow element.
Drawings
Fig. 1 is a schematic structural view of a gas-phase down-flow jet element according to an embodiment of the present invention;
FIG. 2 is a schematic view of the three-dimensional structure of the fluidic element of the present invention
FIG. 3 is a schematic view of the installation of the jet flow element and the column plate of the present invention
FIG. 4 is a schematic structural view of the gas-phase downward jet distributed tower plate of the present invention in a tower
Wherein, 1-main pipe of the jet flow element, 2-branch pipe of the jet flow element, 3-top cover of main pipe of the jet flow element, 4-tower plate, 5-downcomer, 6-outlet weir, 7-riser.
Detailed Description
Examples
As shown in fig. 1-4, the present invention is further explained: welding an end cover on the top of a cylindrical branch pipe, wherein the end cover is flat-topped, and the end cover is connected with a lower fillet by adopting a turning process inside the cylindrical branch pipe; selecting 4 ninety-degree bent pipes with proper sizes to manufacture the bent pipes with proper lengths, welding the bent pipes at intervals of 90 degrees around the cylindrical main pipe at the position 8-10 mm below the end cover of the main pipe, and ensuring that the bent pipes extend into the main pipe for 2mm during welding to form a jet flow element. The column plate is provided with a hole, the diameter of the hole is consistent with the outer diameter of the main pipe, each jet element is welded at the hole of the column plate, and the tail part of the main pipe of the jet element extends into the position 3-5 cm below the column plate during welding. And the jet flow elements are uniformly distributed on the tower plate to form a gas phase downward jet flow distributed tower plate.
In operation, as shown in fig. 1-4, the liquid phase flows down from the downcomer and enters the tray of the current layer, the gas phase rises from the tray of the next layer, and vertically and downwardly flows through the gas rising hole and the jet element in sequence, and then is injected into the flowing liquid on the tray, and after being fully mixed with the liquid and having mass transfer and heat transfer, the liquid phase overflows the liquid layer, and then rises into the jet element of the tray of the previous layer, and the liquid flows into the tray of the next layer through the outlet weir. In the whole operation process, the jet element is always in jet flow on the liquid surface, the plate surface is in a foam state, and the mass and heat transfer effect is good.
Claims (8)
1. A kind of distributed column plate, it is made up of horizontal column plate and gas phase downward jet element, there are several air-lift holes on the horizontal column plate, the gas phase downward jet element is assembled on every air-lift hole;
the gas phase downstream jet element is characterized in that the gas phase downstream jet element is composed of a main pipe and a plurality of branch pipes, a seal head is arranged at one end of the main pipe to serve as a top end, a plurality of branch pipe assembly holes are formed in the side wall, close to the top end, of a pipe body of the main pipe, each branch pipe assembly hole is provided with one branch pipe, and the branch pipes are L-shaped and have the same orientation as the direction of the pipe orifice of the main pipe.
2. The distributor tray according to claim 1, wherein the curved portion of the branch is a ninety degree rounded bend.
3. The dispersive column plate according to claim 1 or 2, wherein the plurality of branch pipe assembly holes are uniformly formed in the side wall of the main pipe body on the same circumference, the number of the branch pipe assembly holes is 4-8, and the pipe orifices of the plurality of branch pipes are equal in height.
4. The distributor tray according to claim 1 or 2, wherein the main and branch pipes are cylindrical.
5. The distributor tray according to claim 1, wherein the diameter of the riser openings is slightly larger than the outer diameter of the main pipe, and the bottom end of the main pipe extends into the tray and is welded to the tray in a seamless manner.
6. The dispersive column plate according to claim 5, wherein the bottom end of the main pipe extends 0.5 to 5 cm below the column plate.
7. The tray according to claim 1, wherein the branch pipes extend 1-5 mm deep into the main pipe via the branch pipe fitting holes.
8. The distributor tray according to claim 1, wherein the head is flat-topped and has edges rounded off from the side walls of the main tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922131441.6U CN211865042U (en) | 2019-12-02 | 2019-12-02 | Gas phase downward jet flow distributed tower plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922131441.6U CN211865042U (en) | 2019-12-02 | 2019-12-02 | Gas phase downward jet flow distributed tower plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211865042U true CN211865042U (en) | 2020-11-06 |
Family
ID=73244150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922131441.6U Active CN211865042U (en) | 2019-12-02 | 2019-12-02 | Gas phase downward jet flow distributed tower plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211865042U (en) |
-
2019
- 2019-12-02 CN CN201922131441.6U patent/CN211865042U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106732308A (en) | A kind of micro- bubbling gas-liquid reactor | |
| CN208275377U (en) | A kind of overflow gas-liquid allotter and its hydrogenator | |
| CN107441919A (en) | The scrubbing tower of flue gas purifying device | |
| CN103239884A (en) | Method for designing float valve tray of suspension type eccentric downcomer | |
| MXPA06006885A (en) | Vapour-liquid distribution tray. | |
| CN207046945U (en) | A kind of water-distributing device of anaerobic reactor | |
| CN211865042U (en) | Gas phase downward jet flow distributed tower plate | |
| CN209645880U (en) | A kind of new type of continuous mass-transfer valve tower | |
| CN101874933B (en) | Duplex overflow weir capable of promoting vapor-liquid separation | |
| CN102921288B (en) | Y-shaped absorption tower and method for performing flue gas desulfurization by using Y-shaped absorption tower | |
| US20200330934A1 (en) | Confined plunging liquid jet reactor with modified downcomer | |
| CN103212345B (en) | Gas-liquid distributor having hanging structure | |
| CN201067642Y (en) | Circular bench shape state stereoscopic mass transfer tower plate bubble cap | |
| KR101171017B1 (en) | Micro Bubble Type GPV-WAO Reactor | |
| US10712248B2 (en) | Apparatus for measuring disentrainment rate of air | |
| CN203128253U (en) | Oil-water separator | |
| CN213644075U (en) | Microbubble generator and hydrocarbon oil hydrogenation reactor | |
| CN216498453U (en) | Uniform distributor for non-continuous liquid | |
| CN209873965U (en) | Novel high-level water pool device formed by multiple groups of bent pipes | |
| CN213160638U (en) | Anti-blocking aeration device | |
| CN106925003A (en) | Mixing perforation water distribution tracery wall and its method for rectifying of a kind of water intake pumping station preliminary sedimentation aeration tank | |
| CN104949567B (en) | A kind of buffering guiding device configured for seawater distributor in open-frame type gasifier | |
| CN203737216U (en) | Uplink gas-liquid distributor applicable to gas-liquid-solid three-phase reactor | |
| CN105289031A (en) | Falling-film jet column tray | |
| CN203128252U (en) | Oil-water separator with cavitation aerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |