CN108097179A - A kind of grating type, which subtracts, rushes equal flow table - Google Patents
A kind of grating type, which subtracts, rushes equal flow table Download PDFInfo
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- CN108097179A CN108097179A CN201611052869.6A CN201611052869A CN108097179A CN 108097179 A CN108097179 A CN 108097179A CN 201611052869 A CN201611052869 A CN 201611052869A CN 108097179 A CN108097179 A CN 108097179A
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- flow table
- grating type
- equal flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0278—Feeding reactive fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0292—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds with stationary packing material in the bed, e.g. bricks, wire rings, baffles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Subtract the invention discloses a kind of grating type and rush equal flow table, belong to field of chemical equipment.The grating type, which subtracts, to be rushed equal flow table and includes tower tray and the distributor that is arranged on tower tray；The distributor includes equal grid, drop expects pipe and connecting rod, and grid is arranged above drop expects pipe, and grid is connected with drop expects pipe by connecting rod.The grating type, which subtracts to rush equal flow table and have, subtracts the features such as to rush flow equalizing function, distributed effect good, small, installation accuracy requirement is low.
Description
Technical field
The present invention relates to field of chemical equipment, more particularly to a kind of reactor component.
Background technology
In recent years, with the fast development of Chinese national economy and the enhancing of environmental consciousness, to the quality of petroleum chemicals and
Environmental requirement is higher and higher.In order to adapt to the needs of Sulfur-Containing Crude, meet the needs of ever-increasing industrial chemicals, improve
The quality of product, importance and role of the hydrogen addition technology in petroleum refining industry are increasing.Hydrogenation reaction can stable operation, add
Can hydrogen catalyst fully play its effect, and whether product quality can reach high-quality, be heavily dependent on gas-liquid object
Expect the uniformity being distributed in the catalyst bed in hydrogenation reactor.And whether distribution of the gas-liquid in catalyst bed be equal
Even, the design with hydrogenation reactor inner member has close relationship.In other words, the direct shadow of quality of reactor component performance
The service cycle to catalyst life, product quality and device is rung, i.e., the interior structure of a set of function admirable is used in hydrogenation process
The obtained effect of part technology is never second to use a kind of higher catalyst of activity instead.
Hydrogenation reactor inner member has inlet diffuser, gas-liquid allotter, sediment incrustation basket, catalyst bed supporting member, cold hydrogen
Case, exit collector and inert ceramic balls etc., wherein being also that most important inner member is gas directly concerning catalyst service efficiency
Liquid distributor and cold hydrogen box.
The function of gas-liquid allotter is that gas-liquid two-phase raw material is allocated to, mixed and is equably sprayed onto catalyst bed
Layer surface improves flow regime of the liquid phase in catalyst bed.Gas-liquid allotter is assigned macro-uniformity to reaction mass
With microscopic uniformity.The amount of liquid phase flowed through from each distributor is identical with gas volume, ensures material to the " equal of catalyst bed
It is even " it covers, it is defined as the macro-uniformity of gas-liquid allotter.Reach liquid distribution macro-uniformity it is higher be relatively difficult
, the reason is that hydrogenation reactor diameter is increasing at present, distribution tray combines installation by piecemeal, can not precisely ensure distribution plate
Face is horizontal.Being commonly installed error can make distribution plate face have 1/8 °~1/2 ° of inclination in the horizontal direction, and maximum inclination is up to 3/2 °.
Even if tower tray its levelness at the beginning of installation is higher, in operation, as thermal expansion and material impact load are common
Under effect, a point tower tray plate face is made to lose levelness.Therefore, it is necessary to distributor self structure is leaned on to realize the uniform of liquid phase macro-allocation
Property.It will be in liquid distribution to bed catalyst by distributor.There is no the blank not being covered with the liquid on catalyst bed
Region ensures " complete " covering of the material to catalyst bed, and here it is the microscopic uniformities of gas-liquid allotter.It is to embody instead
Answer the liquid distribution effect for device bed regional area.
Hydrogenation process is exothermic reaction, and material is unevenly distributed the position extent of reaction that catalyst irrigation effect can be caused good
Acutely, it is more to generate heat；Influence the radial temperature difference of reactor.When radial temperature difference is larger, catalyst local temperature is higher,
Reaction rate is faster, and the superposition of the two effect can form heat spot, make this partial catalyst performance premature inactivation, damage catalyst
Performance results even in the coking, hardened of catalysing area subregion, and material can not normally flow through, since fixed bed hydrogenation reacts
Device is trickle bed fluidised form, causes the catalyst below hardened region that cannot play a role, so as to substantially reduce the use of catalyst
Service life and the on-stream time of device.The local hardened rise for also resulting in catalyst bed pressure drop, has to continue to run with
The operating pressure of reactor is improved, causes the rise of energy consumption；When the too fast rise of pressure drop reaches reactor design load, it has to
Improper shut-down carries out skimming processing, extraneous expense checking maintenance expense, while the screening of catalyst will also result in the stream of catalyst
It loses and wastes.
To liquid, the research of distributing homogeneity has the history of more than 50 years, Hen Duoyan in fixed bed reactors both at home and abroad
The person of studying carefully has found, liquid is the initial distribution on catalyst bed is to influence its overall distribution uniformity an important factor for, because single
The distance that stock liquid generally requires 4-5 times of reactor diameter could realize being uniformly distributed on entire bed.
Due to gas-liquid distributor for fixed bed hydrogenation reactor stable operation or hydrogenated products quality all
It plays the important and pivotal role, therefore the interest of numerous experts and scholars is caused to the research of its structure and performance, while
Receive the attention of main oil refining company and scientific research institution both at home and abroad.Different gas-liquid allotters realizes that macro-allocation is uniform
Property is different from the method for Micro-distribute uniformity.Three classes are broadly divided into according to its mechanism of action：Overflow type, suction type and the two
Mixed type.Their structure, working mechanism are different, and also difference is very big for Micro-distribute uniformity.
Generally speaking, according to the dispersion mechanism of liquid, above-mentioned overflow type, suction type and the mixed of overflow and swabbing action is had both
In mould assembly three classes gas-liquid partition tray, suction type gas-liquid distributor, can be by liquid point due to having preferable liquid crushing performance
It dissipates for the smaller drop of grain size, distributing homogeneity of the liquid on catalyst bed will compared with other two types under its effect
It is good.But since joint oil type gas-liquid distributor is using identical gas-liquid entrance, gas access area will be with the ripple of liquid level
It is dynamic and change, so as to cause the variation of gas velocity and liquid suction capactity, when gas-liquid partition tray is there are during certain gradient,
Gas-liquid distributor in differentiated levels causes gas-liquid point by with different gas access area and liquid suction capactity
Liquid distribution with disk is not uniform enough, that is to say, that the anti-column plate tilt capability of joint oil type gas-liquid distributor is not strong.In addition, most
Some near research reports show joint oil type gas-liquid distributor, and there are more serious central bus phenomenon, points of liquid
Cloth uniformity is also not ideal enough.
At present, there are situations unevenly distributed, such as state in various degree for hydrogenation reactor gas-liquid distributor at present both at home and abroad
Most of interior widely used distributor is bubble cap type distributor or modified bubble cap distributor, and gas-liquid distribution performance exists apparent
Uneven situation, the distributor be based on suction principle rely on gas phase baffling when to liquid phase formed carry secretly, realize liquid phase distribution.Bubble
Shape for hat distributor mainly overcomes distribution plate installation to tilt and keep liquid the swabbing action of liquid phase on distribution plate by gas phase
The uniformity of body macro-allocation.But the overflow port category vertical masonry joint notch of bubble cap type distributor, macro-uniformity are not so good as overflow type
Distributor.And bubble cap dispenser size is larger, and it is more to occupy space reactor away from larger for clipping room.In bubble cap distributor
Heart zone flow is big, and the Micro-distribute of liquid phase is uneven；And since the fluidised form of bubble cap distributor is plug flow, impact force compared with
Greatly.For these reasons, bubble cap distributor must not be not filled with the inert ceramic balls layer of adequate thickness when in use, for slowing down impact
Power, and aid in homodisperse liquid phase, and after certain section producing depth need to be flowed through, could realize that even in liquid phase is disperseed, and is wasted
Valuable space reactor.
In addition, with feedstock oil in poor quality is on the rise, processing process is increasingly longer, serialization degree increasingly
Height, in feedstock oil containing acid cause equipment and process pipelines corrode caused by rust deposite, the entrainment of process upstream unstability auxiliary agent,
Dissolved oxygen in storage and transport process etc., into hydrogenation reactor after can generate dirty object, covering top distribution plate.Based on suction principle
Bubble cap distributor is easy to capped or part and covers, and material is caused to be unevenly distributed, and when Inlet fluid is unevenly distributed, meeting
Seriously affect hydrogenation reactor top dispenser effect.
It is affected for traditional anti-column plate tilt capability of gas-liquid allotter is weaker, distribution plate upper liquid layer depth is uneven
The technical issues of, it is necessary to the new inner member technology that a kind of distributed effect is good, installation accuracy requirement is low is developed, is entered for cutting down
The strong impact power that the fluid remnants kinetic energy of reactor is formed, for eliminating the fluid of inclined fluidised form to liquid layer on distribution plate
" pushing away wave " phenomenon, realizes evenly distributing for fluid.
The content of the invention
For deficiency of the prior art, a kind of grating type of present invention offer, which subtracts, rushes equal flow table, and it is equal that the grating type subtracts punching
Flow table has the characteristics that distributed effect is good, small, installation accuracy requirement is low.
Subtract the invention discloses a kind of grating type and rush equal flow table, the grating type, which subtracts, to be rushed equal flow table including tower tray and be arranged at
Distributor on tower tray；The distributor includes grid, drop expects pipe and connecting rod, and grid is arranged above drop expects pipe, grid and drop
Expects pipe is connected by connecting rod.
Grating type of the present invention, which subtracts, to be rushed in equal flow table, is existed between the lower surface of the grid and the most upper edge for dropping expects pipe
Space, the space form the flow channel of gaseous phase materials.
Grating type of the present invention, which subtracts, to be rushed in equal flow table, and the ragged edge of the tower tray has what direction flipped up along setting
Flanging, flanging have certain altitude, and the tower tray can be divided into several pieces of small tower trays, and several pieces of small tower trays can pass through support
Beam and tower tray connector are assembled into tower tray.
Grating type of the present invention, which subtracts, to be rushed in equal flow table, and the grid includes flase floor and flase floor connecting rod, several pieces of lattice
Screen is linked together by flase floor connecting rod, several pieces of flase floors parallel arrangement in the horizontal direction, the flase floor
Angle between flase floor connecting rod is 10 °~170 °, is preferably 20 °~45 °.Flase floor width is 10~200mm, is preferably
50~120mm；Spacing between adjacent grid plate is 10~300mm, is preferably 50~150mm.Several pieces of flase floors exist
The grille-like that parallel arrangement is formed in horizontal direction is rectangle or cuts into circle.
Grating type of the present invention, which subtracts, to be rushed in equal flow table, the distributor is triangular in shape on tower tray, quadrangle, diamond shape or
Circular arrangement.
Grating type of the present invention, which subtracts, to be rushed in equal flow table, and the distributor may be employed welding, be bolted, spiral shell with tower tray
Silk connection snaps connection, and is preferably bolted.
Grating type of the present invention, which subtracts, to be rushed in equal flow table, and the grid and drop expects pipe quantity are identical or different, preferably identical.
Grating type of the present invention, which subtracts, to be rushed in equal flow table, and the drop expects pipe is columnar structured, the institute of upper and lower ends opening
It is metal material to state drop expects pipe material, is preferably steel.A certain number of spout holes, the spout hole are opened up in the drop expects pipe
There is certain altitude between center line and tower tray upper surface.
Grating type of the present invention, which subtracts, to be rushed in equal flow table, and the grating type, which subtracts, rushes the upper cover that equal flow table is arranged at reactor
It is interior or be arranged at reactor shell upper end；When being arranged at reactor shell upper end, top in reactor is preferably disposed on
The top of distribution plate.
Compared with prior art, grating type of the present invention, which subtracts, rushes equal flow table and has the following advantages that：
1st, present invention firstly provides grating type is set to subtract in reactor to rush the structure of this novel reactor inner member of equal flow table
Think, the grating type subtracts that rush equal flow table be the reactor component newly established, and can cut down when material enters reactor because of remnants
The strong impact power that kinetic energy is formed；The material of the inclined fluidised form caused by using existing central feeding mode is eliminated to reaction
" pushing away wave " effect of liquid layer on device inner top distribution plate；Eliminate liquid material autoreactor entrance fall on the distribution plate of top by
Potential energy and come impact force；Realize that liquid material fluid flow state becomes more meticulous adjusting；Realize the first distribution of material.The grid
Formula subtract rush equal flow table can also substitute top distribution plate distribution function, good entry condition can be provided for top distribution plate.
Have the characteristics that subtract and rush flow equalizing function and distributed effect is good, the requirement of small, installation accuracy is low.
2nd, grating type of the present invention, which subtracts, rushes equal flow table, and setting has the function of to subtract the distributor rushed, on the distributor
The equal flow table in portion can stop the injection fluid of the inclined fluidised form because being formed using central feeding mode, eliminate fluid autoreaction
Device entrance fall to top distribution plate by potential energy and Lai impact force, lose kinetic energy fluid be blocked after in gravity
Under, vertical fluidised form is converted by original inclination fluidised form, and realize that nature falls, material is eliminated to liquid layer on distribution plate
" pushing away wave " phenomenon.Fluid falls can form the consistent liquid layer of depth on tower tray, and friendly even is provided to distributor
Entry condition realizes that fluid flow state becomes more meticulous adjusting and the first distribution of material.Setting quantity is suitable, has the function of to subtract the grid rushed
Formula, which subtracts, rushes equal flow table, and alternative existing top distribution plate, that realizes material evenly distributes function.
3rd, grating type of the invention, which subtracts, rushes equal flow table, by the way that equal flow table and drop expects pipe is set to realize that liquid phase is distributed, with tradition
The bubble cap distributor of suction principle compare, the disperse power of liquid phase distribution is changed to, using potential energy, form splash by gas phase suction,
So as to reduce pressure drop.
4th, grating type of the invention, which subtracts, rushes equal flow table, by setting overflowing for suitable shape in the suitable position of drop expects pipe tube wall
Discharge orifice ensures to be formed on tower tray and there are the liquid layer of certain reasonable depth, reduced by tray level degree deviation and level fluctuation band
The macro-allocation come is uneven.
5th, grating type of the invention, which subtracts, rushes equal flow table, using unique design principle and hydrodynamics feature, realizes material
Evenly distribute, especially applied to equipped with catalyst reactor catalysis reaction when, catalyst bed radial temperature difference can be made
It reduces, catalyst bed radial temperature difference is not more than 3 DEG C, and since radial temperature difference reflects the distributed effect of fluid, this is absolutely proved
Formula equal flow table in tooth weir of the present invention is to the distribution of reaction feed logistics and gas-liquid mixed effect preferable, to catalytic reaction process and urges
Agent coking control has certain booster action.
6th, compared with prior art, grating type of the invention subtracts simple in structure, easy for installation, operating flexibility of rushing equal flow table
Greatly, reactor shell upper end, top distribution plate the upper surface of can be installed in reactor upper cover or be arranged on, can be improved
The space availability ratio of reactor, convenient for loaded in reactor more catalyst and other equipment or reduce reactor scale.Change
Kind reactor top divides material inlet condition, the radial distribution effect for improving reactor feed, effectively eliminates reactor radial temperature difference,
Eliminate catalyst bed heat spot caused by material is unevenly distributed, for catalyst reactor effective use provide it is excellent
Entry condition, reduce and catalyst skimming or change agent number, extend the on-stream time of device, improve technological effect, have good
Economic benefit.
Description of the drawings
Fig. 1 is that grating type of the present invention subtracts and rushes equal flow table schematic diagram.
Fig. 2 is that grating type of the present invention subtracts the distributor schematic diagram for rushing equal flow table.
Fig. 3 is that grating type of the present invention subtracts and rushes equal flow table cell structure schematic diagram.
Fig. 4 is that grating type of the present invention subtracts liquid when rushing the work of equal flow table and flows to schematic diagram.
Fig. 5 is the orientation schematic diagram of different temperature measuring points on same bed section in the embodiment of the present invention and comparative example.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for
Illustrate the present invention, but cannot be used for limiting the scope of the invention.
In the description of the present invention, it is necessary to which explanation, unless otherwise indicated, " several " are meant that one or one
More than, " multiple " are meant that two or more；The instructions such as term " on ", " under ", " interior ", " outer ", " top ", " bottom "
Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and simplification retouched
It states rather than indicates or imply signified device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
In the description of the present invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally connect
It connects；It can be directly connected, can also be indirectly connected by intermediary.For the ordinary skill in the art, may be used
Understand the concrete meaning of above-mentioned term in the present invention depending on concrete condition.
As shown in Figures 1 to 4, subtract the invention discloses a kind of grating type and rush equal flow table, the grating type, which subtracts, rushes equal flow table
Including tower tray 2 and the distributor 1 being arranged on tower tray；The distributor 1 includes grid 1-1, connecting rod 1-2 and drop expects pipe 1-3, institute
It states grid 1-1 to be arranged above drop expects pipe 1-3, grid 1-1 is connected with drop expects pipe 1-3 by connecting rod 1-2.The grid 1-1 and
It is identical that expects pipe 1-3 quantity drops, and grid 1-1 and drop expects pipe 1-3 is arranged in up-down structure.Expect with drop the lower surface of the grid 1-1
There are space between the most upper edge of pipe 1-3, the spatial altitude is 10 ~ 200mm, is preferably 30 ~ 80mm, and the space forms gas
The flow channel of phase materials.A diameter of 40 ~ 300mm of the grid 1-1 is preferably 60 ~ 120mm；The grid 1-1 includes lattice
Screen 1-5 and flase floor connecting rod 1-6, several pieces of flase floor 1-5 are linked together by flase floor connecting rod 1-6, described several pieces
Flase floor 1-5 parallel arrangements in the horizontal direction, the angle α between the flase floor and flase floor connecting rod is 10 °~170 °, excellent
Elect 20 °~45 ° as.Flase floor 1-5 width is 10~200mm, is preferably 50~120mm；Spacing between adjacent grid plate 1-5
It is preferably 50~150mm for 10~300mm；Grid 1-1 shapes is quadrangles or cut into circle.The drop expects pipe 1-3 high
It spends for 20 ~ 300mm, preferably 50 ~ 120mm.Drop expects pipe 1-3 sets 1 ~ 6 spout hole 1-4 in the horizontal direction, is preferably 1 ~ 2
It is a.The spout hole 1-4 total sectional areas of setting are the 10% ~ 100% of drop expects pipe 1-3 sectional areas, are preferably 30% ~ 50%.Expects pipe 1-3 drops
The shape of the spout hole 1-4 opened up is polygon, can be specifically triangle, quadrangle or circle, preferably circular.Drop material
The spout hole 1-4 center lines set on pipe 1-3 are preferably 30 ~ 50mm away from 25 ~ 100mm of upper surface of tower tray.The tower tray 2 is most
Outer edge sets the flanging 2-1 flipped up with direction, and flanging 2-1 height is 5 ~ 80mm, is preferably 30 ~ 50mm；The tower
Disk 2 can be divided into several pieces of small tower trays, several pieces of small tower trays through supporting beam 3 and the fixation of tower tray connector 4 be assembled into one it is whole
Body tower tray.The distributor 1 triangular in shape, quadrangle, diamond shape or circular arrangement on tower tray 2.The distributor 1 and tower tray 2
Welding may be employed, be bolted, screw connection or snap connection, be preferably bolted.The grating type, which subtracts, rushes equal flow table
It is arranged in the upper cover of reactor or is arranged at reactor shell upper end；When being arranged at reactor shell upper end, preferably
It is arranged at the top of top distribution plate in reactor.
The grating type is further illustrated the present invention with reference to Fig. 1, Fig. 2 and Fig. 3 subtract rush the course of work of equal flow table：The lattice
Grating subtracts when rushing the work of equal flow table, and material is entered by the inlet diffuser of reactor in reactor, because pump conveying has remnants
Kinetic energy, thus material has powerful impact force.Since material autoreactor center is fed, although existing reactor is equal
Inlet porting diffuser, but material still sprays around in oblique line fluidised form.When setting lattice provided by the invention in reactor
Grating subtracts rush equal flow table after, fluid is struck first on flase floor 1-1, because flase floor 1-1 is obliquely arranged, can effectively be stopped
In the fluid that oblique line fluidised form is sprayed, its impact force is cut down, using flase floor 1-1 barrier effects, forces Vapor Entrainment
Drop disperses around, realizes the larger angle of flare of material, and fluid drips naturally under the effect of gravity after kinetic energy exhausts, and is formed and hung down
Straight to decline fluidised form, liquid phase potential energy is the kinetic energy of freely falling body, and falls to subtracting on the tower tray 2 for rushing equal flow table, since drop is expected
Spout hole 1-4 is provided on pipe 1-3, i.e. material channel is in horizontally disposed, and spout hole 1-4 has certain altitude apart from tower tray 2
Difference, thus material can form the liquid layer with certain depth on tower tray 2, even if 2 levelness of tower tray there are deviation, still can ensure that
Each distributor 1 is with the presence of liquid phase.Since 1 quantity of distributor is more, it is ensured that catalyst in reactor bed face is arbitrary
One point has a certain number of distributors 1 to work so that 1 uniformity of distributor is protected.Expects pipe 1-3 tube walls drop in fluid certainly
On the spout hole 1-4 that opens up flow into reactor on top distribution plate, realize the preliminary distribution of material.Due to passing through grating type
Subtract the material after rushing equal flow table and have been converted into vertical fluidised form when being assigned on the distribution plate of top, and kinetic energy disappears, therefore it is right
Liquid layer on the distribution plate tray surface of top eliminates material and " the pushing away wave " of liquid layer on distribution plate is acted on, give there is no thrust
Top distribution plate provides friendly, steady, uniform entry condition, and material is realized together with the distribution plate of top in catalyst bed
Being uniformly distributed on layer.
When the less operating mode of liquid phase material amount or when protective agent is loaded on catalyst bed top, grating type of the invention subtracts
Equal flow table is rushed, may replace the top distribution plate in reactor, realization subtracts punching, flows and distributes integration, anti-so as to greatly simplify
It answers device internal structure, reduce investment.
Illustrate the reaction effect of the present invention, but the protection domain being not intended to limit the present invention with reference to embodiment.
Comparative example 1
A hydrofining reactor in certain refinery gasoline hydro-refining unit, the reactor diameter be 3.0m, upper envelope
It leaves unused in head, top layer's catalyst bed inlet is provided with top distribution plate, and the ERI types of this field routine are used in the distribution plate of top
Bubble cap formula gas-liquid allotter, hydrogenating materials are gasoline fraction, and catalyst is the FGH-21 types of Fushun Petrochemical Research Institute's production
Hydrobon catalyst, the process conditions of the reactor are：Operating pressure 1.85MPa, volume space velocity 2.5h-1, hydrogen oil volume
Than for 355:1,285 DEG C of reactor inlet temperature, catalyst bed radial temperature and the temperature difference are shown in Table 1.
Embodiment 1
Compared with comparative example 1, the grating type that the embodiment of the present invention 1 is provided with the present invention in the upper cover of hydrogenation reactor subtracts punching
Equal flow table is subtracted using grating type as shown in Figure 1 and rushes equal flow table and be applied in combination with common ERI type bubble cap formula gas-liquid allotters.
The grating type subtract rush equal flow table parameter it is as follows：The grid is identical with drop expects pipe quantity, and grid is with drop expects pipe in knot up and down
Structure is arranged.There are space between the lower surface of the grid and the most upper edge for dropping expects pipe, the spatial altitude is 50mm.The lattice
Grid include flase floor and flase floor connecting rod, and 6 pieces of flase floors are linked together by 1 flase floor connecting rod forms grid, described 6 pieces
Flase floor parallel arrangement, and flase floor is obliquely installed in the horizontal direction, inclination angle are 30 °.Flase floor width is 100mm；It is adjacent
Spacing between grid is 100mm, and grille-like is quadrangle.The drop expects pipe height is 120mm, and drop expects pipe is in the horizontal direction
2 circular spout holes are set, and the total sectional area of spout hole is the 30% of drop expects pipe sectional area；Overflow centerline hole is away from tower tray upper table
Face 50mm.For the ragged edge of tower tray along setting with the upward flanging in direction, flanging height is 50mm.The tower tray is by 9 pieces of trourelles
Disk assembles, and 2 grating types are both provided on every piece small tower tray subtract and rush equal flow table.Distributor cloth triangular in shape on tower tray
It puts.Catalyst bed radial temperature and the temperature difference are shown in Table 1.
Embodiment 2
It is same as Example 1, the difference is that eliminating the ERI types gas-liquid distribution of this field routine in former hydrogenation reactor
Device only remains the grating type provided in the present invention and subtracts and rushes equal flow table, and bed radial temperature and the temperature difference are shown in Table 1.
Table 1 applies result
The embodiment of the present invention provides for the sake of example and description, and is not exhaustively or by the present invention to limit
In disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selection and
Description embodiment is to more preferably illustrate the principle of the present invention and practical application, and enables those of ordinary skill in the art
The present invention is understood so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (20)
1. a kind of grating type, which subtracts, rushes equal flow table, it is characterised in that：The grating type, which subtracts, to be rushed equal flow table including tower tray and is arranged at tower
Distributor on disk；The distributor includes equal grid, drop expects pipe and connecting rod, and grid is arranged above drop expects pipe, grid and drop
Expects pipe is connected by connecting rod.
2. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, the grid includes flase floor and flase floor connects
Bar, several pieces of flase floors are linked together by flase floor connecting rod.
3. grating type described in accordance with the claim 2, which subtracts, rushes equal flow table, wherein, several pieces of flase floors are put down in the horizontal direction
Row arrangement.
4. grating type described in accordance with the claim 3, which subtracts, rushes equal flow table, wherein, the folder between the flase floor and flase floor connecting rod
Angle is 10 °~170 °, is preferably 20 °~45 °.
5. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, the flase floor width is 10~200mm, preferably
For 50~120mm.
6. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, spacing between the adjacent grid plate for 10~
300mm is preferably 50~150mm.
7. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, the grid is identical with drop expects pipe quantity or not
Together, it is preferably identical.
8. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, offer spout hole in the drop expects pipe.
9. subtract according to the grating type described in claim 7 and rush equal flow table, wherein, the spout hole quantity is 1~6, is preferably 1
~ 2.
10. subtract according to the grating type described in claim 7 and rush equal flow table, wherein, the total sectional area of the spout hole is drop expects pipe
The 10% ~ 100% of sectional area is preferably 30% ~ 50%.
11. subtract according to the grating type described in claim 7 and rush equal flow table, wherein, the shape of the spout hole is polygon, specifically
It is triangle, quadrangle or circle, it is preferably circular.
12. subtract according to the grating type described in claim 7 and rush equal flow table, wherein, the overflow centerline hole is away from tower tray upper surface 5
~ 100mm is preferably 30 ~ 50mm.
13. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, the most lower edge of the grid is with dropping expects pipe most
There are spaces, the space between upper edge to form the flow channel of gaseous phase materials.
14. subtract according to the grating type described in claim 12 and rush equal flow table, wherein, the spatial altitude is 5 ~ 200mm, is preferably
10~50mm。
15. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, the ragged edge of the tower tray has side along setting
To the flanging flipped up.
16. grating type according to claim 14, which subtracts, rushes equal flow table, wherein, the flanging height is 5 ~ 80mm, is preferably
30~50mm。
17. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, the distributor is triangular in shape on tower tray, four
Side shape, diamond shape or circular arrangement.
18. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, the distributor is with tower tray using welding, bolt
Connection, screw connection snap connection, and are preferably bolted.
19. grating type described in accordance with the claim 1, which subtracts, rushes equal flow table, wherein, the grating type, which subtracts, to be rushed equal flow table and is arranged at instead
Answer in the upper cover of device or be arranged at reactor shell upper end.
20. subtract according to the grating type described in claim 18 and rush equal flow table, wherein, it rushes equal flow table when the grating type subtracts and is arranged at
During reactor shell upper end, the top of top distribution plate in reactor is arranged at.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052869.6A CN108097179B (en) | 2016-11-25 | 2016-11-25 | Grid type impact-reducing flow-equalizing disc |
| GB1719542.1A GB2560066B (en) | 2016-11-25 | 2017-11-24 | Impact-reducing uniform-flowing disc and reactor |
| RU2017140962A RU2672742C1 (en) | 2016-11-25 | 2017-11-24 | Disc having impact absorbing action and creating uniform flow and reactor |
| SG10201709746QA SG10201709746QA (en) | 2016-11-25 | 2017-11-24 | Impact-Reducing Uniform-Flowing Disc and Reactor |
| KR1020170158615A KR101989328B1 (en) | 2016-11-25 | 2017-11-24 | Impact-Reducing Uniform-Flowing Disc and Reactor |
| TW106140943A TWI664021B (en) | 2016-11-25 | 2017-11-24 | Underflow equalizing plate and reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052869.6A CN108097179B (en) | 2016-11-25 | 2016-11-25 | Grid type impact-reducing flow-equalizing disc |
Publications (2)
| Publication Number | Publication Date |
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| CN108097179A true CN108097179A (en) | 2018-06-01 |
| CN108097179B CN108097179B (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611052869.6A Active CN108097179B (en) | 2016-11-25 | 2016-11-25 | Grid type impact-reducing flow-equalizing disc |
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| Country | Link |
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| CN (1) | CN108097179B (en) |
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|---|---|
| CN108097179B (en) | 2021-12-07 |
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