CN203944356U - Overflow type gas-liquid allotter - Google Patents
Overflow type gas-liquid allotter Download PDFInfo
- Publication number
- CN203944356U CN203944356U CN201420255947.2U CN201420255947U CN203944356U CN 203944356 U CN203944356 U CN 203944356U CN 201420255947 U CN201420255947 U CN 201420255947U CN 203944356 U CN203944356 U CN 203944356U
- Authority
- CN
- China
- Prior art keywords
- main body
- body tube
- distributor
- stream breaker
- liquid
- 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.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 53
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 238000009827 uniform distribution Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 10
- 238000009826 distribution Methods 0.000 description 6
- 238000005984 hydrogenation reaction Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses a kind of overflow type gas-liquid allotter, mainly comprise main body tube, center tracheae and stream breaker, center tracheae and main body tube coaxially arrange, by top board, link together, top board center drilling, center tracheae through stretching in main body tube, has bar seam hole from top board center drilling on the tube wall of main body tube middle part, main body tube lower end connects stream breaker.This distributor can reduce distributor pressure drop, improves distributor and holds dirty ability, operating flexibility and the scope of application.
Description
Technical field
The utility model relates to the inner member of a kind of petroleum refining field hydrogenation reactor, relates in particular to a kind of overflow type gas-liquid allotter.
Background technology
In fixed bed hydrogenation reactor, all adopt gas-liquid partition tray by gas-liquid homogeneous media be assigned to below beds on.Gas-liquid partition tray is comprised of tray deck and a plurality of gas-liquid allotters of being located on tray deck, and gas-liquid allotter is wherein an important component.In fixed bed hydrogenation reactor, the gas-liquid allocation performance of gas-liquid allotter directly affects the uniformity of reactant and catalyst time of contact, affects the degree that catalyst surface is soaked by liquid phase.And gas-liquid skewness can form the phenomenons such as bias current and partial short-circuit, finally can affect Temperature Distribution and the product quality of beds.The future development that hydrogen addition technology forward reaction device maximizes and product becomes more meticulous at present, so the importance of gas-liquid dielectric distribution is just more outstanding.
Existing gas-liquid allotter enters the mode of gas-liquid allotter by liquid phase, can be divided three classes: overflow type, suction type and the two mixed type.Suction type distributor is mainly bubble cap-shaped structure distributor, relies on gas in the swabbing action at bubble cap bar seam place, brings liquid into central tube, and gas-liquid is mixed strongly at central tube.Bubble cap type main distributor structure comprises bubble cap and the central tube of coaxial setting, and part increases stream breaker, holds the parts such as dirty structure, and a part adopts central tube to add the syndeton of clamp, and a part adopts check ring joint structure.The length pipe gas-liquid allotter that US Patent No. 3524731 is mentioned just belongs to overflow type distributor; From part, gas-liquid maldistribution, but by the combination of multipair length pipe on whole gas-liquid partition tray, gas-liquid two-phase substantially can be realized and being uniformly distributed.The main feature of overflow type gas-liquid allotter is that size is little, and unit are equivalence distributor number is many, and pressure drop is little, is applicable to high viscosity medium, and shortcoming is harsher to the requirement of installation level.The TECHNIP type using on commercial plant afterwards, SHELL type distributor are all overflow type distributors, compared with length pipe distributor, have larger improvement, and basic principle is consistent.On this basis, CN200520032630.3 discloses a kind of overflow type distributor---V-type opening gas-liquid distributor, CN201220737754.1 has mentioned a kind of overflow type distributor, and labor several overflow type distributors, the journal > > of < < East China University of Science the 4th phase in 2007 is mentioned a kind of Venturi Distributor of East China University of Science and also belongs to overflow type distributor, < < chemical industry > > the 8th phase in 2012 in the present age is mentioned FRIPP nozzle-type distributor and also belongs to overflow type distributor, the gas-liquid allotter basic structure of these overflow type structures is all similar with operation principle, the advantage and the scope of application that have separately oneself, the partial structurtes such as stream breaker and spout hole are slightly different, ubiquity gas-liquid distributes even not, distributor holds the problems such as dirty ability is poor.
Utility model content
In order to solve the gas-liquid of prior art existence, distribute even not, distributor holds the poor technical problem of dirty ability, the utility model provides a kind of overflow type gas-liquid allotter, and this distributor can reduce distributor pressure drop, improves distributor and holds dirty ability, operating flexibility and the scope of application.
The overflow type gas-liquid allotter that the utility model provides mainly comprises main body tube, center tracheae and stream breaker, center tracheae and main body tube coaxially arrange, by top board, link together, top board center drilling, center tracheae passes and stretches in main body tube from top board center drilling, on the tube wall of main body tube middle part, have bar seam hole, main body tube lower end connects stream breaker.
As further improved plan, in the main body tube below bar seam hole, be provided with Venturi throat.
The pipe that described center tracheae is open at both ends, stretches into main body tube inside.Gas mainly enters main body tube by center tracheae, and gas accelerates in pipe, and at main body tube Venturi throat, place forms violent mixing.Because center TD is less, do not need to increase top blind plate and prevent that liquid from directly entering center tracheae, uncoveredly can reduce pressure drop, can guarantee that gas enters the speed of center tracheae, the atomization of strengthening gas-liquid simultaneously.
Described open on the tube wall at the middle part of main body tube in seam hole, the position in bar seam hole can guarantee that distribution plate top exists a liquid level, the impact of the injustice that reduction processing and installation cause as far as possible on distributor, bar seam can make liquid enter with lamelliform simultaneously, and liquid level is relevant with feed liquor amount, up and down fluctuation, when liquid does not flood bar seam hole completely, gas-liquid logistics is in the premixed for the first time of this position, and when liquid measure is larger, liquid is walked in bar seam hole completely.Main body tube middle and lower part arranges Venturi throat, and gas-liquid logistics is obvious in Venturi throat place suction immixture, goes out after Venturi throat, and due to the variation of speed and pressure, liquid more easily forms drop.Main body tube lower end is connected with stream breaker by connection leg.
Described main body tube connection leg is four perpendicular legs, and connection leg and main body tube are structure as a whole, and is to form connection leg by the part that fluting stays on main body tube tube wall, and connection leg is connected with stream breaker in stream breaker surrounding.
It is dull and stereotyped that described stream breaker is that periphery has the circle of rectangle slot equably, and slot quantity and layout need to determine according to technique, and stream breaker thickness equates with main body tube the latter half wall thickness, also difference slightly.The rectangle slot of stream breaker is mainly in order to strengthen gas-liquid mixed and uniform.
The utility model has adopted the design feature of traditional overflow type gas-liquid allotter, center tracheae and Venturi throat have been increased, strengthening gas-liquid mixed, bottom adopts the stream breaker with rectangle slot, has guaranteed the uniform of gas-liquid logistics, the appearance dirt ability of distributor has been improved in main body tube bar seam hole, greatly reduce distributor pressure drop, make high-temperature material and catalyst even contact, reduce the temperature difference in hydrogenation reactor bed cross section, improve oil quality, prolong operation cycle.
Accompanying drawing explanation
Fig. 1 is the complete section schematic diagram of the front view of overflow type gas-liquid allotter of the present utility model;
Fig. 2 is the A-A schematic cross-section in Fig. 1;
Fig. 3 is the B-B schematic cross-section in Fig. 1.
In figure, 1-stream breaker, 11-rectangle slot, 2-main body tube, 21-connection leg, 22-Venturi throat, 23-bar seam hole, 3-center tracheae, 4-top board, 5-distribution plate.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, overflow type gas-liquid allotter of the present utility model mainly consists of main body tube 2, center tracheae 3, top board 4, Venturi throat 22 and stream breaker 1.
Main body tube 2 is pipe, upper end is connected with top board 4, lower end is connected with stream breaker 1 by connection leg 21, top board 4 center drillings, center tracheae 3 passes and stretches into main body tube 2 inside from top board 4 center drillings, center tracheae 3 open at both ends, uncovered Venturi throat 22 tops that are positioned at, its lower end, adopt all-welded structure between main body tube 2, top board 4 and center tracheae 3.
Main body tube 2 wall thickness 2～6mm, on the tube wall of main body tube middle part, have bar seam hole 23, bar seam hole 23 distributes (as shown in Figure 3) along main body tube tube wall even circumferential, its length direction and main body tube axially parallel, the quantity in bar seam hole 23 is generally 2～4, and width is generally 2～4 millimeters, length is generally 30～50 millimeters, certainly, the perforate on the tube wall of main body tube middle part can be also other shape, as circular hole, square hole etc.In the main body tube of bar hole 23 belows, be provided with Venturi throat 22, Venturi throat minimum diameter is generally 1/2～3/4 of main body tube internal diameter.Main body tube Shang Xia 2 two parts internal diameter identical, the latter half external diameter is less than the first half external diameter 1～2mm, between the upper and lower two parts of main body tube, form an annular boss, annular boss structure can make distributor accurately locate on the one hand, and manufacture is installed very convenient on the other hand.Gas-liquid allotter can directly be welded on distribution plate 5 by annular boss, also can adopt other dismountable fixed forms, need to be provided with the gas-liquid allotter of some on distribution plate 5 according to technique, and material is distributed on beds uniformly.
Main body tube lower end is connected with stream breaker 1 by connection leg 21, as shown in Figure 2, connection leg 21 is four perpendicular legs, connection leg 21 and main body tube 2 are structure as a whole, to form connection leg by the part that fluting stays on main body tube tube wall, the groove of opening between connection leg 21 forms space, and connection leg 21 is along main body tube circumference uniform distribution, and connection leg 21 welds mutually at stream breaker surrounding and stream breaker.Stream breaker 1 is dull and stereotyped for the circle that periphery has rectangle slot 11 equably, and the quantity of rectangle slot 11 and layout can need to be determined according to technique.Stream breaker 1 thickness equates with main body tube 2 the latter half wall thickness, about 2～4mm, also difference slightly.The rectangle slot 11 of stream breaker 1 is mainly in order to strengthen gas-liquid mixed and uniform.
Operation principle of the present utility model: gas-liquid phase mixture stream gets off from reactor top, during normal work, liquid enters main body tube 2 through main body tube bar seam hole 23, gas is the uncovered main body tube 2 that enters from central gas pipe 3 upper ends mainly, part enters main body tube 2 from bar seam hole 23 epimeres, when liquid measure is larger, liquid floods all seam holes 23 on main body tube 2, and at this moment gas is all from uncovered the entering in central gas pipe 3 upper ends.Gas directly enters main body tube 2 from central gas pipe 3 upper ends are uncovered with higher speed, at the inner Venturi throat of main body tube 2 22 places, there is impact and form after mixing logistics in gas-liquid logistics, at main body tube 2 lower ends collisions stream breakers 1, flow through space between connection leg 21 and the rectangle slot 11 of stream breaker 1 of mixture is evenly distributed to beds.
Claims (6)
1. an overflow type gas-liquid allotter, it is characterized in that: mainly comprise main body tube, center tracheae and stream breaker, center tracheae and main body tube coaxially arrange, by top board, link together, top board center drilling, center tracheae through stretching in main body tube, has bar seam hole from top board center drilling on the tube wall of main body tube middle part, main body tube lower end connects stream breaker.
2. distributor according to claim 1, is characterized in that: in the main body tube below described seam hole, be provided with Venturi throat.
3. distributor according to claim 2, is characterized in that: described Venturi throat minimum diameter is 1/2～3/4 of main body tube internal diameter.
4. according to the arbitrary described distributor of claim 1～3, it is characterized in that: described seam hole distributes along main body tube tube wall even circumferential, its length direction and main body tube axially parallel, the quantity in bar seam hole is 2～4, width is 2～4 millimeters, and length is 30～50 millimeters.
5. according to the arbitrary described distributor of claim 1～3, it is characterized in that: described main body tube lower end is connected with stream breaker by connection leg, connection leg is four perpendicular legs, connection leg and main body tube are structure as a whole, connection leg is along main body tube circumference uniform distribution, and connection leg welds mutually at stream breaker surrounding and stream breaker.
6. according to the arbitrary described distributor of claim 1～3, it is characterized in that: described stream breaker is the circle flat board that periphery has rectangle slot equably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255947.2U CN203944356U (en) | 2014-05-15 | 2014-05-15 | Overflow type gas-liquid allotter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255947.2U CN203944356U (en) | 2014-05-15 | 2014-05-15 | Overflow type gas-liquid allotter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203944356U true CN203944356U (en) | 2014-11-19 |
Family
ID=51886418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255947.2U Expired - Lifetime CN203944356U (en) | 2014-05-15 | 2014-05-15 | Overflow type gas-liquid allotter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203944356U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106076207A (en) * | 2016-08-19 | 2016-11-09 | 兰州兰石集团有限公司 | Suction overflow type gas-liquid allotter |
| CN106237938A (en) * | 2015-06-05 | 2016-12-21 | 中国石油化工股份有限公司 | Logistics mixing distributor and solid particle bed reactor |
| CN106732190A (en) * | 2015-11-25 | 2017-05-31 | 中石化洛阳工程有限公司 | A kind of gas-liquid allotter |
-
2014
- 2014-05-15 CN CN201420255947.2U patent/CN203944356U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106237938A (en) * | 2015-06-05 | 2016-12-21 | 中国石油化工股份有限公司 | Logistics mixing distributor and solid particle bed reactor |
| CN106237938B (en) * | 2015-06-05 | 2019-03-22 | 中国石油化工股份有限公司 | Logistics mixing distributor and solid particle bed reactor |
| CN106732190A (en) * | 2015-11-25 | 2017-05-31 | 中石化洛阳工程有限公司 | A kind of gas-liquid allotter |
| CN106076207A (en) * | 2016-08-19 | 2016-11-09 | 兰州兰石集团有限公司 | Suction overflow type gas-liquid allotter |
| CN106076207B (en) * | 2016-08-19 | 2019-04-26 | 兰州兰石集团有限公司 | Aspirate overflow type gas-liquid allotter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141119 |
|
| CX01 | Expiry of patent term |