CN204051631U - A kind of fluid distributor and fluid predistribution dish - Google Patents
A kind of fluid distributor and fluid predistribution dish Download PDFInfo
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- CN204051631U CN204051631U CN201420434739.9U CN201420434739U CN204051631U CN 204051631 U CN204051631 U CN 204051631U CN 201420434739 U CN201420434739 U CN 201420434739U CN 204051631 U CN204051631 U CN 204051631U
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- assembly
- fluid
- filter assembly
- baffle
- fluid distributor
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Abstract
一种流体分配器和流体预分配盘，所述的流体分配器由上部的顶帽(5)、下部的过滤组件(9)和内部组件(14)、以及底部的破碎组件(1)组成；所述的顶帽(5)由挡板(3)和挡板(3)底部与挡板(3)连接的罩帽(4)组成；所述的内部组件(14)位于过滤组件(9)的内部，由上至下包括入口部(10)、降液部(11)和出口部(13)，其中降液部(11)上设有多个通孔(12)；所述的过滤组件(9)是由外筒(8)、内筒(7)组成的具有环隙的套筒结构，外筒(8)、内筒(7)侧壁设过滤网；所述的罩帽(4)伸入所述的内部组件与所述的过滤组件之间，所述的挡板(3)与过滤组件(9)最上端之间有空隙。流体预分配盘为预分配盘底板上设置均匀分布的多个预分配器。该流体分配器具有分配和过滤双重功能，具有容垢能力强、分配性能好、操作弹性大、安装、维修方便等优点。
A fluid distributor and a fluid pre-distribution tray, the fluid distributor is composed of an upper top cap (5), a lower filter assembly (9) and an inner assembly (14), and a bottom crushing assembly (1); The top cap (5) consists of a baffle (3) and a cover cap (4) connected to the bottom of the baffle (3); the internal assembly (14) is located in the filter assembly (9) The inside, from top to bottom, includes an inlet portion (10), a downcomer portion (11) and an outlet portion (13), wherein the downcomer portion (11) is provided with a plurality of through holes (12); the filter assembly (9) is a sleeve structure with an annular gap made up of an outer cylinder (8) and an inner cylinder (7), the outer cylinder (8) and the side walls of the inner cylinder (7) are provided with filter screens; the cover cap (4 ) protrudes between the internal assembly and the filter assembly, and there is a gap between the uppermost end of the baffle plate (3) and the filter assembly (9). The fluid pre-distribution plate is provided with a plurality of pre-distributors evenly distributed on the bottom plate of the pre-distribution plate. The fluid distributor has dual functions of distribution and filtration, and has the advantages of strong scale capacity, good distribution performance, large operating flexibility, convenient installation and maintenance, etc.
Description
Technical field
The utility model relates to a kind of reactor inner member of petroleum refining and chemical field hydrogenation plant, more particularly, relates to the fluid distributor in a kind of heavy oil fixed bed hydrogenating reactor and fluid predistribution dish.
Background technology
In recent years, increasingly strict to environmental requirement in world wide, simultaneously, along with crude oil heaviness, in poor quality tendency be on the rise, and market constantly increases the demand of high-quality distillate, therefore, the mink cell focus hydrogen addition technologies such as residual oil can produce very important impact to economic benefit.
The raw material that composition that is impure for hydrocarbon raw material field of hydrogenation, particularly residual oil etc. or easy coking is more, usually containing impurity such as colloid, asphalitine, metal impurities and suspended particulates.In practical operation, be difficult to avoid system and ducted rust deposite dirt to be brought in reactor, dirt tires out at catalyst bed surface layer, medium circulation passage will be reduced rapidly, even cause obstruction, these impurity enter catalyst section will deposit to catalyst surface, blocking catalyst duct, the pore volume of catalyst is declined greatly, thus catalyst activity is reduced fast.Meanwhile, dirty thing tires out at catalyst bed surface layer also can make reactor pressure decrease rise, and can crush time serious tower tray, causes unplanned shutdown.For other type gas-liquid fixed bed reactors, dirt blockage problem also exists to some extent.
In the technique such as hydrofinishing, hydrocracking, reactor inner member plays an important role making reactant and catalyst fully contact.Wherein gas-liquid allotter is arranged on the porch of beds usually, is the crucial inner member realizing logistics uniform distribution in hydrogenation reactor.Current domestic usual employing suction type gas-liquid allotter, US3218249 discloses a kind of gas-liquid allotter, is to be provided with the parts such as bubble cap above main body tube, offers the slot of many generation swabbing actions that parallel to the axis in bubble cap bottom.When the liquid level on distribution plate is higher than bubble cap lower edge, gas phase, by producing strong suction force in the annular space after slot between bubble cap and main body tube, makes liquid phase be sucked and is broken into droplet and into and out of main body tube entrained by gas phase.Another kind is overflow type distributor, and generally in the position perforate of standpipe different cross section, riser top arranges calotte.Gas enters beds by standpipe bottom calotte, and liquid is then entered in standpipe by perforate on standpipe, and then enters beds.
But industrial at present, particularly process the hydrogenation plant of heavy and the more raw material of impurity, logistics enters after reactor through inlet diffuser, above gas-liquid partition tray, generally only establish porous plate carry out predistribution or do not arrange other internals.The porous plate horizontal tray that the first situation is arranged can be used from the distribution of rough liquid with more advanced final liquid distribution tray one, but it does not have interception function to the dirt in fluid; If the second situation does not arrange other internals above gas-liquid partition tray, then raw material directly enters gas-liquid partition tray bed.No matter adopt the distribution plate of the distributor composition of suction type or overflow type, all only fluid is distributed and dirt cannot be processed, the dirt part be mingled with in such liquid phase can be trapped within distribution plate bed, along with the increase of incrustation height, the passage that blocking gas-liquid is run, affect gas-liquid distribution effects, even make distributor operate under abnormal state.
According to the literature; in residual hydrogenation equipment running; the initial stage overall co-ordination allocation performance of suction type distributor is better; but often can find that when commercial Application is overhauled the accumulation of distributor upper part region has solid impurity; blocked bubble cap bottom, bubble cap bottom space diminishes, skewness and bias current to cause logistics to enter.The bad distribution of gas-liquid mixed logistics on beds can reduce catalyst utilization, causes radial section temperature contrast, even occurs bed hot-spot and coking thus causes catalyst premature inactivation.Cause temperature to rise, occur focus, pressure drop increases, so that unplanned shutdown.
In addition, along with production-scale expansion, reactor maximizes becomes a trend, therefore trickle bed gas-liquid allotter requires a good gas-liquid initial distribution, initial distribution directly affects the effect of gas-liquid allotter above beds, and then affect catalyst utilization, but initial distribution is difficult to reach at present in large-scale reactor preferably.
Utility model content
The technical problems to be solved in the utility model is for the deficiencies in the prior art, the shortcoming that the heavy oil feedstock that in fixed bed hydrogenation reactor, the composition of gas-liquid allotter to impure or easy coking is more easily blocks when distributing and initial distribution is not good, provides a kind of fluid distributor and the fluid predistribution dish with filtering function.
A kind of fluid distributor, is made up of the disruption elements 1 of the top cap 5 on top, the filter assemblies 9 of bottom and intraware 14 and bottom; Described top cap 5 is made up of the cover cap 4 of the cylindrical structure be connected with baffle plate 3 bottom baffle plate 3 and baffle plate 3; Described intraware 14 is positioned at the inside of filter assemblies 9, includes oral area 10 from top to bottom, falls liquid portion 11 and export department 13, wherein falls liquid portion 11 and is provided with multiple through hole 12; The tube-in-tube structure with annular space that described filter assemblies 9 is made up of urceolus 8, inner core 7, urceolus 8, inner core 7 sidewall establish screen pack; Described cover cap 4 stretches between intraware and filter assemblies, and described baffle plate 3 and filter assemblies 9 have space topmost.
A kind of fluid predistribution dish, comprise predistribution to try to get to the heart of a matter plate and fluid distributor, described predistribution is tried to get to the heart of a matter on plate and is arranged equally distributed perforate, fluid distributor is installed in each perforate, and described fluid distributor is made up of the disruption elements 1 of the top cap 5 on top, the filter assemblies 9 of bottom and intraware 14 and bottom; Described top cap 5 is made up of the cover cap 4 of the cylindrical structure be connected with baffle plate 3 bottom baffle plate 3 and baffle plate 3; Described intraware 14 is positioned at the inside of filter assemblies 9, includes oral area 10 from top to bottom, falls liquid portion 11 and export department 13, wherein falls liquid portion 11 and is provided with multiple through hole 12; The tube-in-tube structure with annular space that described filter assemblies 9 is made up of urceolus 8, inner core 7, urceolus 8, inner core 7 sidewall establish screen pack; Described cover cap 4 stretches between intraware and filter assemblies, and described baffle plate 3 and filter assemblies 9 have space topmost.
Multiple fluid predistribution dish of the present utility model is arranged on fixed bed hydrogenation reactor top, carries out predistribution to hydrogenating materials, can filter the dirt in hydrogenating materials simultaneously.
The beneficial effect of the fluid distributor that the utility model provides is:
Compared with prior art, the fluid distributor that the utility model provides is arranged on the top of gas-liquid partition tray in fixed bed hydrogenation reactor, dirt in hydrogenating materials can be blocked in beyond internal distribution assembly while carrying out flow distribution, there is dual-use function, effectively can reduce dirty thing and enter lower floor's gas-liquid partition tray and block distributor.
Hydrogenating materials is by after fluid distributor predistribution of the present utility model, gas-liquid two-phase is made to enter bottom gas-liquid partition tray with relatively uniform flow velocity, the impact of gas-liquid two-phase to bottom gas-liquid partition tray can be reduced, keep liquid level stabilizing, thus make gas-liquid partition tray formed evenly distribution, ensure good distribution effects.Fluid distributor of the present utility model can be arranged in the reactor remaining space above gas-liquid allotter, and not needing increases reactor volume, avoids it to enter distribution plate and beds.Meanwhile, this logistics predistribution dish has dismounting, feature easy to maintenance.
Adopt fluid distributor of the present utility model to tackle and hold the dirt in feedstock oil, thus ensureing the distribution effects of the gas-liquid partition tray below it and operation steady in a long-term.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of fluid distributor of the present utility model;
Accompanying drawing 2 is the structural representation of destroyer.
Wherein: 1-disruption elements, 2-distribution plate chassis, 3-baffle plate, 4-cover cap, 5-pushes up cap, 6-scale remover, 7-inner core, 8-urceolus, 9-filter assemblies, 10-inlet portion, and liquid portion falls in 11-, 12-through hole, 13-export department, 14-intraware.
Detailed description of the invention
Below illustrate the embodiment of the fluid distributor that the utility model provides:
A kind of fluid distributor, is made up of the disruption elements 1 of the top cap 5 on top, the filter assemblies 9 of bottom and intraware 14 and bottom; Described top cap 5 is made up of the cover cap 4 be connected with baffle plate 3 bottom baffle plate 3 and baffle plate 3; Described intraware 14 is positioned at the inside of filter assemblies 9, includes oral area 10 from top to bottom, falls liquid portion 11 and export department 13, wherein falls liquid portion 11 and is provided with multiple through hole 12; The tube-in-tube structure with annular space that described filter assemblies 9 is made up of urceolus 8, inner core 7, urceolus 8, inner core 7 sidewall establish screen pack; Described cover cap 4 stretches between described intraware and described filter assemblies, and described baffle plate 3 and filter assemblies 9 have space topmost.
In the fluid distributor that the utility model provides, described top cap 5 is made up of cover cap 4 and baffle plate 3, and described baffle plate 3 is epirelief, the concave shape of level board or different curve type of attachment.It can be such as tapered cap.The cylinder that described cover cap 4 is the bottom the lower openings be connected with baffle plate 3 that are positioned at baffle plate 3, described cover cap 4 can be opened or not open bar seam.Preferably, described cover cap 4 has bar seam.
In the fluid distributor that the utility model provides, described cover cap 4 stretches between described intraware and described filter assemblies 9.Annular space is formed between described cover cap and described inlet portion.The cross-sectional area of described cover cap 4 is greater than the cross-sectional area of the inlet portion 10 of described intraware, is less than the cross-sectional area of the inner core 7 of described filter assemblies 9.
The area of described baffle plate 3 is not less than the cross-sectional area of the inner core 7 of described filter assemblies 9.Preferably, the area of described baffle plate 3 is greater than the cross-sectional area of the urceolus 8 of filter assemblies 9.
In the fluid distributor that the utility model provides, described top cap 5 is connected by connector with the top of described intraware 14.
In the fluid distributor that the utility model provides, described intraware includes oral area, export department and fall liquid portion between this inlet portion and export department.Preferably, the described liquid portion that falls is provided with multiple through hole 12.
In the fluid distributor that the utility model provides, in described filter assemblies, described urceolus, inner core sidewall establish screen pack, can according to reaction needed filling material or protective agent in the annular space formed between described urceolus and inner core.Preferably, filling scale remover 6 in the annular space formed between described urceolus and inner core.
In the fluid distributor that the utility model provides, in described filter assemblies, inner core, urceolus cross section can be circle, quadrangle, polygon, are preferably shape that is circular, square or other symmetries.Described intraware shape also can be circle, quadrangle, polygon, and the shape of described top cap adapts with it.
In the fluid distributor that the utility model provides, described destroyer is the sheet metal having perforate, and described destroyer has the effect of broken liquid stream.
A kind of fluid predistribution dish, comprise predistribution to try to get to the heart of a matter plate and fluid distributor, described predistribution is tried to get to the heart of a matter on plate and is arranged equally distributed perforate, fluid distributor is installed in each perforate, and described fluid distributor is made up of the disruption elements 1 of the top cap 5 on top, the filter assemblies 9 of bottom and intraware 14 and bottom; Described top cap 5 is made up of the cover cap 4 of the cylindrical structure be connected with baffle plate 3 bottom baffle plate 3 and baffle plate 3; Described intraware 14 is positioned at the inside of filter assemblies 9, includes oral area 10 from top to bottom, falls liquid portion 11 and export department 13, wherein falls liquid portion 11 and is provided with multiple through hole 12; The tube-in-tube structure with annular space that described filter assemblies 9 is made up of urceolus 8, inner core 7, urceolus 8, inner core 7 sidewall establish screen pack; Described cover cap 4 stretches between intraware and filter assemblies, and described baffle plate 3 and filter assemblies 9 have space topmost.
The fluid predistribution dish that the utility model provides to be arranged on below fixed bed reactors inlet diffuser and above gas-liquid partition tray between vacant position, utilize reactor remaining space, do not take Catalyst packing volume.
By filter assemblies, dirt is tackled in the fluid distributor that the utility model provides, make it to be difficult to flow to into intraware with liquid thus prevent blocking, form relatively uniform biphase gas and liquid flow distribution by the distributional effects of intraware.Have allocation performance good, hold the advantages such as dirty ability is strong, operating flexibility is large, installation, maintenance is convenient.
Illustrate for fixed bed hydrogenation reactor, the use procedure of the fluid distributor that the utility model provides, the raw material entering fixed bed reactors drops between the dispenser unit on fluid distribution disc, and liquid phase is accumulated in card, and its height is lower than the inside and outside cylindrical shell height of filter assemblies.Gas phase is present in above liquid phase, and major part is entered in intraware by the inlet portion of the gap between baffle plate and cover cap and intraware.Liquid phase enters in the annular space of intraware and inner core by the screen pack of the screen pack on outer tube wall, protective agent and inner core, and the dirty thing such as impurity is intercepted at outside urceolus.Liquid level starts to accumulate in the plate of the annular space of intraware and inner core, and under pressure, the perforate of being fallen liquid portion by intraware is entered in intraware.Enter that the liquid phase of intraware is gentle is mixed into gas-liquid mixture, through the perforate of fluid distribution disc plate, i.e. the export department of intraware, flows out the fluid distribution disc as predistribution dish, forms predistribution.Meanwhile, dirt is intercepted on fluid distribution disc plate.The gas-liquid partition tray that the logistics of remove portion dirt afterwards enters lower floor carries out next step distribution, and the logistics of further uniform distribution enters beds and carries out hydrogenation reaction.
Illustrate below in conjunction with accompanying drawing the fluid distributor that the utility model provides, but therefore the utility model is not subject to any restriction.
Accompanying drawing 1 is the structural representation of fluid distributor of the present utility model, and as shown in Figure 1, fluid distributor forms by pushing up cap 5, filter assemblies 9, intraware 14 and disruption elements 1.Described top cap 5 is made up of the cover cap 4 of intraware 14 and baffle plate 3, and baffle plate 3 can be the epirelief shape of level board or different curve type of attachment, or tapered cap etc.Cover cap 4 is the cylindrical structure be connected with baffle plate 3, and bar seam can be opened or do not opened in bottom.Described intraware 14 includes oral area 10, export department 13 and fall liquid portion 11 between this inlet portion and export department.Annular space is formed between described cover cap 4 and described inlet portion 10.Fall wherein at described intraware 14 the multiple through holes 12 liquid portion 11 being formed with the axis direction along described central tube and distributing, through hole can be circular, oval, triangle or other shapes.The tube-in-tube structure with annular space that described filter assemblies 9 is made up of urceolus 8, inner core 7, urceolus 8, inner core 7 sidewall establish screen pack, can according to protective agents such as reaction needed filling material or scale removers 6 in the annular space of its composition.Described baffle plate 3 and filter assemblies 8 have space topmost.
The fluid distributor that the utility model provides according to certain rules distributing installation forms fluid predistribution dish in distribution bottom.
Accompanying drawing 2 is the structural representation of destroyer.Destroyer as shown in Figure 2 has the hole of a leg-of-mutton centre bore and 8 heptangle starriness.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420434739.9U CN204051631U (en) | 2014-08-01 | 2014-08-01 | A kind of fluid distributor and fluid predistribution dish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420434739.9U CN204051631U (en) | 2014-08-01 | 2014-08-01 | A kind of fluid distributor and fluid predistribution dish |
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| Publication Number | Publication Date |
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| CN204051631U true CN204051631U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420434739.9U Expired - Lifetime CN204051631U (en) | 2014-08-01 | 2014-08-01 | A kind of fluid distributor and fluid predistribution dish |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097179A (en) * | 2016-11-25 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of grating type, which subtracts, rushes equal flow table |
| CN108097178A (en) * | 2016-11-25 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of tooth weir formula, which subtracts, rushes equal flow table |
| CN110665271A (en) * | 2019-11-11 | 2020-01-10 | 武汉金中石化工程有限公司 | Hydrogenation gas-liquid mixing filter equipment |
| CN112705123A (en) * | 2019-10-25 | 2021-04-27 | 中国石油化工股份有限公司 | Hydrogenation reactor and hydrogenation method |
| CN115106023A (en) * | 2021-03-17 | 2022-09-27 | 中国石油化工股份有限公司 | Gas-liquid two-phase reactor, application thereof and hydrocarbon oil hydrogenation method |
| CN115999451A (en) * | 2021-10-21 | 2023-04-25 | 中国石油化工股份有限公司 | Device and method for removing solid impurities in reactor |
-
2014
- 2014-08-01 CN CN201420434739.9U patent/CN204051631U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097179A (en) * | 2016-11-25 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of grating type, which subtracts, rushes equal flow table |
| CN108097178A (en) * | 2016-11-25 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of tooth weir formula, which subtracts, rushes equal flow table |
| CN112705123A (en) * | 2019-10-25 | 2021-04-27 | 中国石油化工股份有限公司 | Hydrogenation reactor and hydrogenation method |
| CN112705123B (en) * | 2019-10-25 | 2022-10-11 | 中国石油化工股份有限公司 | Hydrogenation reactor and hydrogenation method |
| CN110665271A (en) * | 2019-11-11 | 2020-01-10 | 武汉金中石化工程有限公司 | Hydrogenation gas-liquid mixing filter equipment |
| CN115106023A (en) * | 2021-03-17 | 2022-09-27 | 中国石油化工股份有限公司 | Gas-liquid two-phase reactor, application thereof and hydrocarbon oil hydrogenation method |
| CN115106023B (en) * | 2021-03-17 | 2024-04-02 | 中国石油化工股份有限公司 | Gas-liquid two-phase reactor, application thereof and hydrocarbon oil hydrogenation method |
| CN115999451A (en) * | 2021-10-21 | 2023-04-25 | 中国石油化工股份有限公司 | Device and method for removing solid impurities in reactor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |
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| CX01 | Expiry of patent term |