CN103100351A - Gas-liquid distribution plate capable of reducing horizontal susceptibility - Google Patents
Gas-liquid distribution plate capable of reducing horizontal susceptibility Download PDFInfo
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- CN103100351A CN103100351A CN2011103534613A CN201110353461A CN103100351A CN 103100351 A CN103100351 A CN 103100351A CN 2011103534613 A CN2011103534613 A CN 2011103534613A CN 201110353461 A CN201110353461 A CN 201110353461A CN 103100351 A CN103100351 A CN 103100351A
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Abstract
The invention provides a gas-liquid distribution plate capable of reducing horizontal susceptibility. The gas-liquid distribution plate comprises a tray; a proper amount of gas-liquid distributors are arranged on the tray; liquid phase cofferdams are arranged on the tray and divide the tray into a plurality of zones with an area smaller than that of the tray. In use of the gas-liquid distribution plate provided by the invention, a liquid phase preliminary distributor is preferably arranged on the upper part of the gas-liquid distribution plate, and when the gas-liquid distribution plate has horizontal shift, the liquid phase cofferdams can form a plurality of liquid surfaces with a small area to allow the gas-liquid distributors in every cofferdam to continue playing a role, thereby improving a gas-liquid mixing effect.
Description
Technical field
The present invention relates to a kind of gas-liquid partition tray that reduces horizontal susceptibility, belong to petrochemical industry, be particularly useful for the uniform distribution of gas-liquid two-phase logistics in fixed bed hydrogenation reactor.
Background technology
Along with the continuous progress of Petro-Chemical Machinery technical merit, the tower equipment of petroleum refining industry is gradually to maximization, complicated development.At present, the diameter of fixed bed hydrogenation reactor can surpass 5000mm, and the reaction engineering problem also manifests gradually but the thing followed such as radial temperature difference is large, focus appears in beds etc.
The perfect condition of fixed bed hydrogenation reactor mass transfer is: feedstock oil is evenly distributed on the catalyst granules surface, and hydrogen passes in the beds space.So hydrogen need to be dissolved in feedstock oil, could contact with catalyst, participate in hydrogenation reaction.In order to bring into play better the performance of catalyst, rational reactor inner member must be set, make the gas-liquid flow distribution even, and can impel being dissolved in feedstock oil of hydrogen maximum, and guarantee the uniform distribution of liquid phase stream.Gas-liquid partition tray is exactly a kind of gas-liquid two-phase logistics fully can the mixing, is assigned to equably the reactor inner member of beds simultaneously.Can be divided into suction type, overflow type and mixed type gas-liquid partition tray both according to the gas-liquid allotter operation principle that distributes on it.
Suction type gas-liquid allotter (claiming again the bubble cap gas-liquid allotter) is comprised of central tube and the bubble cap that has the bar seam, when the gas-liquid logistics from top to bottom the time, fluid drips drops down onto distribution plate, gas passes in the crack by bubble cap and central tube, when the liquid level of distribution plate was close to or higher than the bubble cap lower limb, the sectional area of gas passage reduced, and gas speed sharply increases, liquid can be pumped to central tube, guide to gas-liquid partition tray below.On suction type gas-liquid allotter central tube top and outlet, blowgun and simple distribution grid can be set, increase gas-liquid mixed and distribution effect.
When the suction type gas-liquid partition tray of large-scale fixed bed hydrogenation reactor is installed (other main equipment is also like this), need the special concern levelness, the General Requirements horizontal departure should be controlled at ± 6mm in.Reactor take internal diameter as 4800mm is example, the gas-liquid partition tray horizontal departure once, its outer peripheral deviation is ± 42mm.The part gas-liquid allotter was lost efficacy, and gas-liquid distributes and the effect of mixing reduces greatly, and the problems such as the excessive and hot localised points of beds radial temperature difference are more outstanding.The horizontal departure of gas-liquid partition tray is strict, and is very high to the requirement of design and construction.In addition, when gas-liquid partition tray is installed at equipment, levelness is good, but in the equipment use procedure, differ during due to working condition and installation large (high temperature, high pressure etc.), can make the level slight change of vapour-liquid distribution plate due to stress and other factor, and slight change will cause the result of serious gas-liquid maldistribution.
US3218249, US5158714, CN2111789 belong to typical suction type gas-liquid allotter patent.For gas-liquid is mixed preferably, design different blowguns and bubble cap opening, but do not considered the levelness problem of distribution plate, during installation, level is higher than sensitivity.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of gas-liquid partition tray that reduces horizontal susceptibility, can reduce the horizontal susceptibility of gas-liquid partition tray design and installation.
The present invention reduces the gas-liquid partition tray of horizontal susceptibility, comprises column plate, and the gas-liquid allotter of suitable number is set on column plate, and the liquid phase cofferdam is set on column plate, and the liquid phase cofferdam is divided into several zones less than column plate area with column plate.
In gas-liquid partition tray of the present invention, gas-liquid allotter can be conventional various forms, as (mixed type have swabbing action and overflow effect simultaneously) such as suction type gas-liquid allotter, overflow type gas-liquid allotter, mixed type gas-liquid allotters.The preferred effective suction type gas-liquid allotter of gas-liquid mixed, suction type gas-liquid allotter comprise the bubble cap formation on the central tube that connects column plate and central tube top.
In gas-liquid partition tray of the present invention, the liquid phase cofferdam equates the gas-liquid allotter quantity that arranges on the maximum of column plate cut zone quantity and column plate, and namely each gas-liquid allotter all separates with liquid phase cofferdam and other gas-liquid allotter.The liquid phase cofferdam can be relevant according to the scale of column plate with the minimum of a value of column plate cut zone quantity, in general should less than 3 cut zone, in general 3～15 cut zone be set get final product.In general, 3～30 gas-liquid allotters are trapped among in a zone with a liquid phase cofferdam namely can reach certain effect.The gas-liquid allotter quantity that the zone that preferred each liquid phase cofferdam surrounds comprises is identical.The zone that liquid phase of the present invention cofferdam surrounds comprises following two kinds: the zone that (1) is only surrounded by the liquid phase cofferdam; (2) zone that is surrounded by liquid phase cofferdam and reactor wall.
In gas-liquid partition tray of the present invention, the liquid phase cofferdam can be arbitrarily with the shape of column plate cut zone, as being the combination of square, triangle, rhombus, hexagon, circle, one or more shapes such as fan-shaped and irregularly shaped.Can specifically arrange according to the structure of gas-liquid partition tray column plate.
In gas-liquid partition tray of the present invention, the steel plate manufacturing with the identical material of gas-liquid partition tray is adopted in the liquid phase cofferdam, and the height in liquid phase cofferdam is preferably higher than the height of gas-liquid allotter.For the suction type gas-liquid allotter with bubble cap structure, the height in liquid phase cofferdam be at the bottom of the gas-liquid allotter bubble cap along 0.5～2.0 times of distance gas-liquid partition tray face height, be preferably 0.8～1.5 times, most preferably be 1.0～1.5 times.Concrete height is done suitable adjustment according to the structure of bubble cap.
Gas-liquid partition tray of the present invention preferably arranges the preliminary distributor of liquid phase on this gas-liquid partition tray top in use, and liquid phase is evenly distributed on each cut zone.
When gas-liquid partition tray level of the present invention deflected, due to the barrier effect in liquid phase cofferdam, the zonule in the liquid phase cofferdam had the function of self―sustaining liquid level, so it can be regarded as a relatively independent small-sized gas-liquid partition tray.Like this, a large-scale gas-liquid partition tray just has been divided into several small-sized gas-liquid partition trays, and small-sized gas-liquid partition tray is lower to the susceptibility of levelness, makes the horizontal susceptibility of whole gas-liquid partition tray reduce.
Specifically, the present invention has following advantage:
1, reduce the horizontal susceptibility of suction type gas-liquid partition tray.When occurring that installation deviation or gas-liquid load are excessive causes the deflection of gas-liquid partition tray occurred level, each liquid phase cofferdam can form the liquid level of zonule, makes the gas-liquid allotter in each cofferdam continue to play a role.
2, the liquid phase cofferdam is simple in structure, easy for installation, does not destroy the structure of existing gas-liquid partition tray.
3, on existing gas-liquid partition tray basis, improvement expenses is very low.
Description of drawings
Fig. 1 is that gas-liquid partition tray master of the present invention looks schematic diagram;
Fig. 2 is that the embodiment of the present invention 1 liquid phase cofferdam is around the top view of a gas-liquid allotter structure;
Fig. 3 is the top view that the embodiment of the present invention 2 liquid phase cofferdam turn around a plurality of gas-liquid allotter structures;
Fig. 4 is the top view that the embodiment of the present invention 3 liquid phase cofferdam turn around a plurality of gas-liquid allotter structures.
Wherein: 1-reactor wall, 2-gas-liquid partition tray column plate, 3-suction type gas-liquid allotter, 4-liquid phase cofferdam.
The specific embodiment
Below in conjunction with accompanying drawing, a kind of gas-liquid partition tray of the present invention is further described.
As shown in Figure 1, in reactor wall 1, the low suction type gas-liquid partition tray of horizontal susceptibility is made of gas-liquid partition tray column plate 2, suction type gas-liquid allotter 3 and liquid phase cofferdam 4.Can comprise one or more gas-liquid allotters 3 between liquid phase cofferdam 4.When the 2 occurred level deflection of gas-liquid partition tray column plate, can keep the liquid level relatively independent than small size between liquid phase cofferdam 4, guarantee that the gas-liquid allotters 3 in liquid phase cofferdam 4 have the liquid level that adapts with it.If there is no the liquid phase cofferdam, whole gas-liquid partition tray only has a unified liquid level.During the deflection of gas-liquid partition tray occurred level, the gas-liquid allotter liquid level of a higher side is lower, and serious even do not have a liquid level, and this moment, gas-liquid allotter can be a large amount of by gas phase, and aneroid passes through mutually, can't play a role.The gas-liquid allotter liquid level of a side on the low side is higher, and serious even floods gas-liquid allotter, and the gas-liquid allotter of this moment can only pass through liquid phase, not have gas phase to pass through, and cause realizing gas-liquid mixed, and gas phase and liquid distribution are inhomogeneous.
For further illustrating the solution of the present invention, enumerate following examples:
Embodiment 1
As shown in Figure 2, arranging suction type gas-liquid allotter 3 on gas-liquid partition tray column plate 2, the liquid phase cofferdam 4 of rhombus surrounds each gas-liquid allotter 3 separately.The height in liquid phase cofferdam is along 1.0 times of distance gas-liquid partition tray 2 height at the bottom of bubble cap.When the 2 occurred level deflection of gas-liquid partition tray column plate, can keep the liquid level relatively independent than small size between liquid phase cofferdam 4, guarantee that the gas-liquid allotters 3 in liquid phase cofferdam 4 can continue to play a role.
Embodiment 2
As shown in Figure 3, arranging suction type gas-liquid allotter 3 on gas-liquid partition tray column plate 2, liquid phase cofferdam 4 surrounds a plurality of gas-liquid allotters 3.Middle liquid phase cofferdam is hexagon, and all the other liquid phases cofferdam is fan-shaped.The height in liquid phase cofferdam is along 1.2 times of distance gas-liquid partition tray 2 height at the bottom of bubble cap.When the 2 occurred level deflection of gas-liquid partition tray column plate, can keep the liquid level relatively independent than small size between liquid phase cofferdam 4, guarantee that a plurality of gas-liquid allotters 3 in liquid phase cofferdam 4 have the liquid level that adapts with it, play a role preferably.
As shown in Figure 4, arranging suction type gas-liquid allotter 3 on gas-liquid partition tray column plate 2, liquid phase cofferdam 4 surrounds a plurality of gas-liquid allotters 3.Middle liquid phase cofferdam be circular, and circular liquid phase cofferdam is fan-shaped liquid phase cofferdam on every side.The height in liquid phase cofferdam is along 1.5 times of distance gas-liquid partition tray 2 height at the bottom of bubble cap.When the 2 occurred level deflection of gas-liquid partition tray column plate, can keep the liquid level relatively independent than small size between liquid phase cofferdam 4, guarantee that a plurality of gas-liquid allotters 3 in liquid phase cofferdam 4 have the liquid level that adapts with it, play a role preferably.
Claims (10)
1. a gas-liquid partition tray that reduces horizontal susceptibility, comprise column plate, and the gas-liquid allotter of suitable number is set on column plate, it is characterized in that: the liquid phase cofferdam is set on column plate, and the liquid phase cofferdam is divided into several zones less than column plate area with column plate.
2. according to gas-liquid partition tray claimed in claim 1, it is characterized in that: gas-liquid allotter is suction type gas-liquid allotter, overflow type gas-liquid allotter or mixed type gas-liquid allotter.
3. according to gas-liquid partition tray claimed in claim 1, it is characterized in that: gas-liquid allotter is the suction type gas-liquid allotter, and the suction type gas-liquid allotter comprises that the bubble cap on the central tube that connects column plate and central tube top consists of.
4. according to gas-liquid partition tray claimed in claim 1, it is characterized in that: in gas-liquid partition tray, the liquid phase cofferdam equates the gas-liquid allotter quantity that arranges on the maximum of column plate cut zone quantity and column plate, and namely each gas-liquid allotter all separates with liquid phase cofferdam and other gas-liquid allotter; In gas-liquid partition tray, the liquid phase cofferdam is 3 with column plate cut zone quantity.
5. according to gas-liquid partition tray claimed in claim 1, it is characterized in that: in gas-liquid partition tray, the liquid phase cofferdam is 3～15 with column plate cut zone quantity.
6. according to gas-liquid partition tray claimed in claim 1, it is characterized in that: 3～30 gas-liquid allotters are trapped among in a zone with a liquid phase cofferdam.
7. according to gas-liquid partition tray claimed in claim 1, it is characterized in that: the gas-liquid allotter quantity that the zone that each liquid phase cofferdam surrounds comprises is identical.
8. according to gas-liquid partition tray claimed in claim 1, it is characterized in that: the liquid phase cofferdam with the shape of column plate cut zone be square, triangle, rhombus, hexagon, circle, fan-shaped and irregularly shaped in the combination of one or more shapes.
9. according to gas-liquid partition tray claimed in claim 3, it is characterized in that: the height in liquid phase cofferdam is along 0.5～2.0 times of distance gas-liquid partition tray face height at the bottom of the gas-liquid allotter bubble cap.
10. according to gas-liquid partition tray claimed in claim 1, it is characterized in that: on gas-liquid partition tray top, the preliminary distributor of liquid phase is set when gas-liquid partition tray uses, liquid phase is evenly distributed on each cut zone.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353461.3A CN103100351B (en) | 2011-11-10 | 2011-11-10 | Gas-liquid distribution plate capable of reducing horizontal susceptibility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353461.3A CN103100351B (en) | 2011-11-10 | 2011-11-10 | Gas-liquid distribution plate capable of reducing horizontal susceptibility |
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| CN103100351A true CN103100351A (en) | 2013-05-15 |
| CN103100351B CN103100351B (en) | 2015-04-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801109A (en) * | 2014-03-03 | 2014-05-21 | 南京德邦金属装备工程股份有限公司 | Light and heavy phase redistribution device for liquid-liquid extraction packed tower |
| CN105582861A (en) * | 2014-10-22 | 2016-05-18 | 中国石油化工股份有限公司 | Gas-liquid distributor for fluidized bed |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1613532A (en) * | 2004-09-22 | 2005-05-11 | 天津大学 | Vapor-liquid mixed high-efficient mass transferring tray with liquid-phase zoning cross current flow |
-
2011
- 2011-11-10 CN CN201110353461.3A patent/CN103100351B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1613532A (en) * | 2004-09-22 | 2005-05-11 | 天津大学 | Vapor-liquid mixed high-efficient mass transferring tray with liquid-phase zoning cross current flow |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801109A (en) * | 2014-03-03 | 2014-05-21 | 南京德邦金属装备工程股份有限公司 | Light and heavy phase redistribution device for liquid-liquid extraction packed tower |
| CN103801109B (en) * | 2014-03-03 | 2015-12-02 | 南京德邦金属装备工程股份有限公司 | A kind of liquid-liquid extraction packed tower weight phase apparatus for redistributing |
| CN105582861A (en) * | 2014-10-22 | 2016-05-18 | 中国石油化工股份有限公司 | Gas-liquid distributor for fluidized bed |
| CN105582861B (en) * | 2014-10-22 | 2018-06-15 | 中国石油化工股份有限公司 | A kind of gas-liquid distributor for fluid bed |
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| CN103100351B (en) | 2015-04-15 |
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