CN106732190A - A kind of gas-liquid allotter - Google Patents
A kind of gas-liquid allotter Download PDFInfo
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- CN106732190A CN106732190A CN201510828215.7A CN201510828215A CN106732190A CN 106732190 A CN106732190 A CN 106732190A CN 201510828215 A CN201510828215 A CN 201510828215A CN 106732190 A CN106732190 A CN 106732190A
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- central tube
- gas
- liquid
- screen cloth
- liquid allotter
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Abstract
The invention discloses a kind of gas-liquid allotter, including cover plate and central tube, central tube is vertically arranged, cover plate is horizontally placed on the top of central tube, central tube includes inlet portion and descending liquid portion, descending liquid portion is below inlet portion, pipe outlet centered on central tube lower end, the central tube top is chamfer, the formed angular cut of central tube top beveling and the space that cover plate is formed are inlet portion, there is multiple rows of metal bar shaped screen cloth along central tube axis directional spreding in descending liquid portion, central tube outlet lower section is provided with jet mixing device.Present invention is mainly used for the fixed bed hydrogenation reactor in petroleum refining and chemical industry.Liquid phase raw material can be uniformly distributed on the beds in fixed bed hydrogenation reactor using the present invention, be allowed to be fully contacted with catalyst, to reduce the temperature difference in beds cross section, so as to improve oil quality, reduce production cost.
Description
Technical field
The invention belongs to the field of hydrogenation in petroleum refining and chemical industry, it is related to a kind of gas-liquid allotter used by fixed bed hydrogenation reactor.
Background technology
Gas-liquid allotter is the important component of fixed bed hydrogenation reactor, the catalyst bed layer surface for liquid phase raw material to be uniformly sprayed onto lower section, to give full play to the effect of catalyst in whole bed, so as to ensure the quality and yield of product.Liquid phase obtains uneven with Gas distribution, and Global reaction Rate, product yield and catalyst deactivation rate etc. can be made to be affected, and causes the reduction of catalyst utilization rate, temperature distributing disproportionation is even, product quality declines in beds etc..Especially because hydrogenation reaction majority is strong exothermic process, the skewness of reaction raw materials oil can cause bed hot-spot and catalyst coking in beds.The maximization of current hydrogen addition technology reactor is very universal, and product develops to the direction for becoming more meticulous, and the raising of environmental protection requirement is more strict to oil quality requirement, therefore the importance of gas-liquid distribution is just more protruded.
Multiple gas-liquid allotters on tray deck, constitute gas-liquid partition tray according to certain rules.Each gas-liquid allotter is an allocation unit, and gas-liquid two-phase is uniformly distributed on beds commonly through gas-liquid allotter.
Existing gas-liquid allotter is by liquid phase into can be divided three classes in the way of gas-liquid allotter：Overflow type, suction type and the two mixed type.Overflow type gas-liquid allotter is mainly characterized by that pressure drop is small, and gas phase is substantially vertical with liquid phase flow direction, simple structure, manufacture difficulty is relatively low, be relatively applied to high viscosity medium, is generally used for distributing the occasion of high viscosity medium.Suction type gas-liquid allotter, this gas-liquid allotter is typically provided the parts such as bubble cap, central tube, air-flow produces swabbing action by slot in the annular space between bubble cap and central tube, and liquid punching is broken into drop and is carried along into central tube by gas, realizes gas-liquid mixed and distribution.
The content of the invention
It is an object of the invention to provide a kind of gas-liquid allotter, to reach the more uniform mixed effect of gas-liquid mixed compared with existing overflow type gas-liquid allotter.
To reach above-mentioned purpose, the present invention provides a kind of gas-liquid allotter, the gas-liquid allotter includes cover plate and central tube, central tube is vertically arranged, cover plate is horizontally placed on the top of central tube, and central tube includes inlet portion and descending liquid portion, and descending liquid portion is below inlet portion, pipe outlet centered on central tube lower end, it is characterised in that：The central tube top is chamfer, and the space that beveling formed angular cut in central tube top is formed with cover plate is inlet portion, has multiple rows of metal bar shaped screen cloth along central tube axis directional spreding in descending liquid portion, and central tube outlet lower section is provided with jet mixing device.
The present invention is further technically characterized in that：Plane and central tube axis angle where the formed angular cut of central tube top beveling are 30 °~60 °.
The present invention is further technically characterized in that：The gas-liquid allotter also includes stream breaker, and the stream breaker is horizontally placed on the lower section of jet mixing device lower part outlet.
There is following beneficial effect using the present invention：When using, the multiple rows of metal bar shaped screen cloth (Johnson Net) being distributed on the axis direction different height section that liquid phase passes through central tube enters in central tube, the space (i.e. inlet portion) that gas phase is formed from central tube top angular cut and top blind flange enters in central tube, downdraught is formed in central tube, above-mentioned gas phase is produced to liquid phase includes the impact and shearing of the multiple directions of vertical direction, and gas-liquid two-phase is sufficiently mixed in central tube.Multiple rows of metal bar shaped screen cloth (Johnson Net) can be such that liquid phase is uniformly entered in central tube along the circumferencial direction of central tube, there is provided more preferably gas-liquid mixed effect, be particularly suited for the larger situation of liquid phase accounting in fluid.Setting injection apparatus in central tube export department can make fluid obtain flow velocity higher, and produce contraction melange effect in the trunnion portion of ejection section so that the mixing of liquid phase is more uniform.Setting stream breaker can reallocate to the liquid phase raw material of center bottom of the tube outlet outflow, eliminate the larger phenomenon of central tube of trailer fluid flow.Therefore, the present invention can be more uniformly distributed gas-liquid.Additionally, the present invention also have the advantages that liquid phase spray area is big, pressure drop is small, operational stability is high, operating flexibility is big, using scope is wide, simple structure, easily manufactured, firm stable.
Present invention is mainly used for the fixed bed hydrogenation reactor in petroleum refining and chemical industry.Liquid phase raw material can be uniformly distributed on the beds in fixed bed hydrogenation reactor after being assembled into gas-liquid partition tray with tower tray, it is allowed to be fully contacted with catalyst, to reduce the temperature difference in beds cross section, so as to improve oil quality, production cost is reduced.
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.But the drawings and specific embodiments are not intended to limit the scope of protection of present invention.
Brief description of the drawings
Fig. 1 is a kind of structural representation of gas-liquid allotter of the invention, and the gas-liquid allotter is fixed on distribution plate.
Fig. 2 is the top view of gas-liquid allotter shown in Fig. 1.
Fig. 3 is the structural representation of jet mixing device 2.
Fig. 4 is the schematic diagram of stream breaker 5.
In Fig. 1 to Fig. 4, same reference numerals represent identical technical characteristic.
Specific embodiment
Referring to Fig. 1, a kind of gas-liquid allotter of the present invention, it includes cover plate 3 and central tube 1, central tube 1 is vertically arranged, cover plate 3 is horizontally placed on the top of central tube 1, central tube 1 includes inlet portion and descending liquid portion 4, descending liquid portion 4 is below inlet portion, pipe outlet centered on the lower end of central tube 1, the top of the central tube 1 is chamfer, the formed angular cut 8 of the top of central tube 1 beveling and the space that cover plate 3 is formed are inlet portion, multiple rows of metal bar shaped screen cloth (Johnson Net) is distributed with along the axis direction of central tube 1 in descending liquid portion 4, the outlet lower section of central tube 1 is provided with jet mixing device 2.
A kind of gas-liquid allotter of the present invention can also include stream breaker 5, stream breaker 5 is horizontally placed on the lower section of jet mixing device 2, stream breaker 5 is that flat board (as shown in Figure 4) is justified in perforate, or is the taper connection plate with perforate and the round flat sheet combination with perforate (figure is omited).Central tube 1 is fixedly connected with distribution plate 6.
Referring to Fig. 1 and Fig. 2, preferred scheme of the invention is that the plane where the formed angular cut 8 of the top of central tube 1 beveling and the axis angle of central tube 1 are 30 °~60 °.
Metal bar shaped screen cloth (Johnson Net) in the preferred annular thin gap in descending liquid portion 4, along axial arranged 2~4 row metal bar shaped screen cloth of central tube 1 (being 2 rows shown in Fig. 1), the circumferential weld quantity for often arranging metal bar shaped screen cloth is generally 2~15.The metal bar shaped screen cloth is the metal bar shaped screen cloth in annular thin gap, and screen cloth gap scope is generally 0.05mm~1.5mm.Liquid phase accounting of the gap, quantity and row of circumferential weld in the inlet amount and oil gas of reactor is combined to reach optimal gas-liquid mixed effect.
The jet mixing device 2 is larynx tubular structure.The upper entrance of jet mixing device 2 is inversed taper platform structure, and lower part outlet is frustum structure, middle for necking down throat connects.
Stream breaker 5 is preferentially from the round slab construction with perforate, as Figure 1 and Figure 4, stream breaker 5 is from the round slab construction with perforate, when gas-liquid allotter works, the fluid of the top of stream breaker 5 can perforate of the part from stream breaker flow down, to ensure the gas-liquid flow in gas-liquid allotter lower central region.
Central tube 1 is generally welded to connect with distribution plate 6, to ensure that the liquid phase distributed in plate 6 will not spill from the junction with central tube 1.
It should be noted that in critical piece described in above-mentioned specific embodiment, can on demand set or be not provided with stream breaker 5, it is all contained in present invention.
Operation principle of the invention is illustrated by taking the gas-liquid allotter shown in Fig. 1 as an example below.
Liquid phase in fluid forms certain thickness liquid layer on distribution plate 6, liquid phase is by the annular strip narrow gap of the multiple rows of metal bar shaped screen cloth (Johnson Net) in descending liquid portion 4 on central tube 1 even into central tube, gas phase enters in central tube 1 from the top entry of central tube 1, downward air-flow is formed in central tube 1, above-mentioned gas phase produces the impact and shearing of multiple directions to liquid phase, so that the broken atomization of liquid phase, is sufficiently mixed with gas phase.The fluid of gas-liquid mixed is through the pipe integrated jet mixing device 2 in the outlet at bottom Chu Yu centers of central tube 1, accelerate to pass through stream breaker 5 from base injcction after mixing is shunk in trunnion portion, liquid phase raw material to the outlet outflow of center bottom of the tube is reallocated, and eliminates the larger phenomenon of central tube of trailer fluid flow.Therefore, the present invention can be more uniformly distributed gas-liquid.
Claims (9)
1. a kind of gas-liquid allotter, the gas-liquid allotter includes cover plate and central tube, and central tube is vertically arranged,
Cover plate is horizontally placed on the top of central tube, and central tube includes inlet portion and descending liquid portion, and descending liquid portion is in inlet portion
Lower section, pipe outlet centered on central tube lower end, it is characterised in that：The central tube top is chamfer, in
The space that beveling formed angular cut in heart pipe top is formed with cover plate is inlet portion, along central tube in descending liquid portion
Axis direction is distributed with multiple rows of metal bar shaped screen cloth, and central tube outlet lower section is provided with jet mixing device.
2. a kind of gas-liquid allotter according to claim 1, it is characterised in that：The central tube top
Plane and central tube axis angle where the formed angular cut of beveling are 30 °~60 °.
3. a kind of gas-liquid allotter according to claim 1, it is characterised in that：Edge in the descending liquid portion
Axial arranged 2~4 row metal bar shaped screen cloth of central tube.
4. a kind of gas-liquid allotter according to claim 1, it is characterised in that：Edge in the descending liquid portion
Axial arranged 2~4 row metal bar shaped screen cloth of central tube, the circumferential weld quantity for often arranging metal bar shaped screen cloth is 2~15.
5. a kind of gas-liquid allotter according to claim 1 or 3 or 4, it is characterised in that：The gold
Category bar shaped screen cloth is the metal bar shaped screen cloth in annular thin gap, and screen cloth gap scope is 0.05mm~1.5mm.
6. a kind of gas-liquid allotter according to claim 1, it is characterised in that：The gas-liquid allotter
Also include stream breaker, the stream breaker is horizontally placed on the lower section of jet mixing device lower part outlet.
7. a kind of gas-liquid allotter according to claim 6, it is characterised in that：The stream breaker is to open
Flat board is justified in hole, or is the taper connection plate with perforate and the round flat sheet combination with perforate.
8. a kind of gas-liquid allotter according to claim 6 or 7, it is characterised in that：The stream breaker
For flat board is justified in perforate.
9. a kind of gas-liquid allotter according to claim 1, it is characterised in that：The injection mixing dress
Larynx tubular structure is set to, upper entrance is inversed taper platform structure, and lower part outlet is frustum structure, centre is necking down
Throat connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828215.7A CN106732190A (en) | 2015-11-25 | 2015-11-25 | A kind of gas-liquid allotter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828215.7A CN106732190A (en) | 2015-11-25 | 2015-11-25 | A kind of gas-liquid allotter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106732190A true CN106732190A (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510828215.7A Pending CN106732190A (en) | 2015-11-25 | 2015-11-25 | A kind of gas-liquid allotter |
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| Country | Link |
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| CN (1) | CN106732190A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019191356A1 (en) * | 2018-03-28 | 2019-10-03 | Uop Llc | Apparatus for gas-liquid contacting |
| CN111589484A (en) * | 2020-06-29 | 2020-08-28 | 兰州东立龙信息技术有限公司 | Side-sliding centrifuge tube for high-speed centrifuge |
| CN115069101A (en) * | 2021-03-12 | 2022-09-20 | 中国石油化工股份有限公司 | Gas-liquid mixer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2834690Y (en) * | 2005-11-14 | 2006-11-08 | 中国石油化工集团公司 | Co-current gas-liquid distributor |
| CN102451648A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Gas liquid distributor |
| CN203075924U (en) * | 2012-12-28 | 2013-07-24 | 冯斌 | Overflow-jet nozzle type gas-liquid distributor |
| US20140147352A1 (en) * | 2011-06-07 | 2014-05-29 | Chevron U.S.A. Inc. | Apparatus and method for hydroconversion |
| CN203944356U (en) * | 2014-05-15 | 2014-11-19 | 中石化洛阳工程有限公司 | Overflow type gas-liquid allotter |
-
2015
- 2015-11-25 CN CN201510828215.7A patent/CN106732190A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2834690Y (en) * | 2005-11-14 | 2006-11-08 | 中国石油化工集团公司 | Co-current gas-liquid distributor |
| CN102451648A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Gas liquid distributor |
| US20140147352A1 (en) * | 2011-06-07 | 2014-05-29 | Chevron U.S.A. Inc. | Apparatus and method for hydroconversion |
| CN203075924U (en) * | 2012-12-28 | 2013-07-24 | 冯斌 | Overflow-jet nozzle type gas-liquid distributor |
| CN203944356U (en) * | 2014-05-15 | 2014-11-19 | 中石化洛阳工程有限公司 | Overflow type gas-liquid allotter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019191356A1 (en) * | 2018-03-28 | 2019-10-03 | Uop Llc | Apparatus for gas-liquid contacting |
| US11154793B2 (en) | 2018-03-28 | 2021-10-26 | Uop Llc | Apparatus for gas-liquid contacting |
| CN111589484A (en) * | 2020-06-29 | 2020-08-28 | 兰州东立龙信息技术有限公司 | Side-sliding centrifuge tube for high-speed centrifuge |
| CN115069101A (en) * | 2021-03-12 | 2022-09-20 | 中国石油化工股份有限公司 | Gas-liquid mixer |
| CN115069101B (en) * | 2021-03-12 | 2023-11-28 | 中国石油化工股份有限公司 | Gas-liquid mixer |
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| PB01 | Publication | ||
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Application publication date: 20170531 |