CN108097178A - A kind of tooth weir formula, which subtracts, rushes equal flow table - Google Patents
A kind of tooth weir formula, which subtracts, rushes equal flow table Download PDFInfo
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- CN108097178A CN108097178A CN201611052855.4A CN201611052855A CN108097178A CN 108097178 A CN108097178 A CN 108097178A CN 201611052855 A CN201611052855 A CN 201611052855A CN 108097178 A CN108097178 A CN 108097178A
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- flow table
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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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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
- C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Subtract the invention discloses a kind of tooth weir formula and rush equal flow table, belong to field of chemical equipment.Tooth weir formula, which subtracts, rushes equal flow table and includes tower tray and the distributor that is arranged on tower tray；The distributor includes equal flow table, drop expects pipe and connecting rod, and equal flow table is arranged above drop expects pipe, and equal flow table is connected with drop expects pipe by connecting rod.Tooth weir formula, 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 present invention offer tooth weir formula, which subtracts, rushes equal flow table, and it is equal that tooth weir formula subtracts punching
Flow table, which has the characteristics that subtract, rushes flow equalizing function and distributed effect is good, the requirement of small, installation accuracy is low.
Subtract the invention discloses a kind of tooth weir formula and rush equal flow table, tooth weir formula, which subtracts, rushes equal flow table including tower tray and be arranged at
Distributor on tower tray；The distributor includes equal flow table, drop expects pipe and connecting rod, and equal flow table is arranged above drop expects pipe, flows
Disk is connected with drop expects pipe by connecting rod.
Tooth weir of the present invention formula, which subtracts, rushes in equal flow table, is deposited between the most lower edge of the equal flow table and the most upper edge for dropping expects pipe
In space, the space forms the flow channel of gaseous phase materials.
Tooth weir of the present invention formula, which subtracts, rushes 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 assemble integral tower tray.
Tooth weir of the present invention formula, which subtracts, rushes in equal flow table, the distributor is triangular in shape on tower tray, quadrangle, diamond shape or
Circular arrangement.
Tooth weir of the present invention formula, which subtracts, rushes in equal flow table, the distributor by drop expects pipe and tower tray may be employed welding,
It is bolted, screw connection or snaps connection, it is preferred to use be bolted.
Tooth weir of the present invention formula, which subtracts, rushes in equal flow table, and the equal flow table and drop expects pipe quantity are identical or different, preferably phase
Together.
Tooth weir of the present invention formula, which subtracts, rushes in equal flow table, the center line of the equal flow table overlap with dropping the center line of expects pipe or
It is misaligned, preferably overlap.
Tooth weir of the present invention formula, which subtracts, rushes in equal flow table, and the equal flow table is polygonized structure, is specifically as follows disc
Structure, triangle disk-shaped structure, diamond shape disk-shaped structure, square disk-shaped structure or trapezoidal disk-shaped structure are preferably disc-shaped structure.
Tooth weir of the present invention formula, which subtracts, rushes in equal flow table, and the ragged edge of the equal flow table is flipped up along setting with direction
Flanging, flanging has certain altitude, sets the tooth socket with certain altitude on flanging, the shape of the tooth socket is triangle,
Quadrangle is arc-shaped, is preferably triangle.
Tooth weir of the present invention formula, which subtracts, rushes 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.
Tooth weir of the present invention formula, which subtracts, rushes in equal flow table, and tooth weir formula, 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, tooth weir of the present invention formula, which subtracts, rushes equal flow table and has the following advantages that：
1st, present invention firstly provides tooth weir formula is set to subtract in reactor to rush the structure of this novel reactor inner member of equal flow table
Think, tooth weir formula 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 tooth weir
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 but also with distributed effect is good, small, installation accuracy requirement is low.
2nd, tooth weir of the present invention formula, 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 tooth weir rushed
Formula, which subtracts, rushes equal flow table, and alternative existing top distribution plate, that realizes material evenly distributes function.
3rd, tooth weir formula 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, tooth weir formula 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, tooth weir formula 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, since radial temperature difference reflects the distributed effect of fluid, also froms the perspective of from side
Understand the equal flow table of tooth weir of the present invention formula it is preferable to the distribution of reaction feed logistics and gas-liquid mixed effect, to catalytic reaction process with
Catalyst coking control has certain booster action.
6th, compared with prior art, the tooth weir equal flow table of formula of the invention is simple in structure, and easy for installation, operating flexibility is big, can
To be installed in reactor upper cover or be arranged on top distribution plate of reactor shell upper end the upper surface of, reaction can be improved
The space availability ratio of device, convenient for loaded in reactor more catalyst and other equipment or reduce reactor scale.Improve anti-
Device top is answered to divide material inlet condition, the radial distribution effect for improving reactor feed, effectively eliminate reactor radial temperature difference, is eliminated
Catalyst bed heat spot caused by material is unevenly distributed, for the effective using providing excellent to enter of catalyst reactor
Pig's tongue part reduces catalyst skimming or changes agent number, extend the on-stream time of device, improve technological effect, has good warp
Ji benefit.
Description of the drawings
Fig. 1 is that tooth weir of the present invention formula subtracts and rushes equal flow table schematic diagram.
Fig. 2 is that tooth weir of the present invention formula subtracts the distributor schematic diagram for rushing equal flow table.
Fig. 3 is that tooth weir of the present invention formula subtracts the equal flow table schematic diagram for rushing equal flow table.
Fig. 4 is that tooth weir of the present invention formula 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 tooth weir formula and rush equal flow table, tooth weir formula, which subtracts, rushes equal flow table
Including tower tray 2 and the distributor 1 being arranged on tower tray；The distributor 1 includes equal flow table 1-1, connecting rod 1-2 and drop expects pipe 1-3,
The equal flow table 1-1 is arranged above drop expects pipe 1-3, and equal flow table 1-1 is connected with drop expects pipe 1-3 by connecting rod 1-2.It is described to flow
Disk 1-1 is identical with drop expects pipe 1-3 quantity, and equal flow table 1-1 and drop expects pipe 1-3 is arranged in up-down structure, and flow table 1-1 center lines
It is overlapped with drop expects pipe 1-3 center lines；The sectional area of the equal flow table 1-1 is drop expects pipe 1-3 sectional areas 1 ~ 10 times, preferably 2 ~
5 times.The equal flow table 1-1 be polygonized structure, be specifically as follows disc-shaped structure, diamond shape disk-shaped structure, triangle disk-shaped structure,
Square structure or trapezoidal disk-shaped structure are preferably disc-shaped structure.The most lower edge of the equal flow table 1-1 is with drop expects pipe 1-3's
There are space between most upper edge, the spatial altitude is 5 ~ 200mm, is preferably 10 ~ 50mm, and the space forms gaseous phase materials
Flow channel.A diameter of 40 ~ 300mm of the equal flow table 1-1 is preferably 60 ~ 120mm；Its most outer sets flanging 1-5, folding
The height of side 1-5 is 5 ~ 80mm, preferably 30 ~ 50mm；Tooth socket 1-6 is set on the flanging 1-5, and the shape of tooth socket 1-6 is triangle
Shape, quadrangle or arc-shaped are preferably triangle.The height of tooth socket 1-6 is the 5% ~ 100% of flanging height, preferably 30% ~
60%.The drop expects pipe 1-3 height is 20 ~ 300mm, is preferably 50 ~ 120mm.Drop expects pipe 1-3 sets 1 ~ 6 to overflow in the horizontal direction
Discharge orifice 1-4 is preferably 1 ~ 2.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%.The shape for the spout hole 1-4 that drop expects pipe 1-3 is opened up is polygon, can be specifically triangle, quadrangle or circle
Shape, it is preferably circular.The spout hole 1-4 center lines set on drop expects pipe 1-3 away from 25 ~ 100mm of upper surface of tower tray, be preferably 30 ~
50mm.For the ragged edge of the tower tray 2 along setting with the upward flanging 2-1 in direction, flanging 2-1 height is 5 ~ 80mm, is preferably
30~50mm；The tower tray 2 includes being several pieces of small tower trays, and several pieces of small tower trays are through 4 fixation group of supporting beam 3 and tower tray connector
Dress up tower tray 2.The distributor 1 triangular in shape, quadrangle, diamond shape or circular arrangement on tower tray 2.The distributor 1 and tower
Disk 2 may be employed using welding, being bolted, screw connection or snapping connection, and is preferably bolted and is attached.The tooth
Weir formula, which subtracts, rushes equal flow table and is arranged in the upper cover of reactor or is arranged at reactor shell upper end；When being arranged at reactor
During cylinder upper end, the top of top distribution plate in reactor is preferably disposed on.
Tooth weir formula 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 tooth
Weir formula 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 tooth provided by the invention in reactor
Weir formula subtracts rush equal flow table after, fluid is struck first on the equal flow table 1-1 of distributor 1, and equal flow table 1-1 can effectively stop in oblique line
The fluid mechanics of fluidised form injection, its impact force is cut down, since the most outer setting of equal flow table 1-1 is upward with direction
Flanging, and flanging have certain altitude, it is ensured that fluid is formed on equal flow table 1-1 have certain altitude liquid layer, when
When the height of liquid layer is more than the height of equal flow table 1-1 upper hems, the tooth socket that fluid is opened up along on the flanging of equal flow table 1-1 is realized
Overflow, naturally perpendicular fluidised form are fallen onto tower tray 2.By the way that equal flow table 1-1 is set to be changed the fluidised form of material, fluid
Be blocked, lose after kinetic energy under gravity, the perpendicular fluidised form of tooth socket opened up along on the flanging of equal flow table fall to
On tower tray.Due to being provided with spout hole 1-4 on drop expects pipe 1-3, i.e., material channel is in horizontally disposed, and spout hole 1-4 is apart from tower
Disk 2 is poor with certain altitude, thus material can form the liquid layer with certain depth on tower tray 2, even if 2 levelness of tower tray is deposited
In deviation, it still can ensure that each distributor 1 with the presence of liquid phase.Since 1 quantity of distributor is more, it is ensured that catalysis in reactor
Any one point of agent bed face has a certain number of distributors 1 to work so that 1 uniformity of distributor is protected.Fluid
In the spout hole 1-4 inflow reactors opened up from drop expects pipe 1-3 tube walls on top distribution plate, realize that the preliminary of material is divided
Match somebody with somebody.Vertical fluidised form is had been converted into due to subtracting by tooth weir formula when the material after rushing equal flow table is being assigned on the distribution plate of top,
And kinetic energy disappears, therefore material is eliminated to distribution plate upper liquid there is no thrust to the liquid layer on the distribution plate tray surface of top
" pushing away wave " effect of layer, friendly, steady, uniform entry condition is provided to top distribution plate, real together with the distribution plate of top
Material being uniformly distributed on catalyst bed is showed.
When the less operating mode of liquid phase material amount or when protective agent is loaded on catalyst bed top, tooth weir formula of the invention subtracts
Equal flow table is rushed, may replace the top distribution plate in reactor, realization subtracts punching, flows and distributes integration.
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 hydrogenation reactor in certain Refinery Coking Gasoline hydrofining unit, the reactor diameter be 3.2m, 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 coker naphtha, and catalyst is the FGH- of Fushun Petrochemical Research Institute's production
21 type Hydrobon catalysts, the process conditions of the reactor are：Hydrogen partial pressure 2.0MPa, volume space velocity 2.0h-1, hydrogen oil volume
Than for 300:1,280 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 tooth weir formula 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 tooth weir formula 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.
Tooth weir formula, which subtracts, rushes the parameter of equal flow table and is：The equal flow table be disc-shaped structure, a diameter of 120mm；Its outer flanging is high
It spends for 30mm；Lance tooth slot structure is opened up on flanging, the height of tooth socket is the 30% of flanging height.Expect along with drop at equal flow table bottom
Spatial altitude is 40mm between on pipe；The equal flow table is identical with drop expects pipe quantity, and equal flow table is in up-down structure with drop expects pipe
Arrangement, and flow table center line is overlapped with drop expects pipe center line, the sectional area of equal flow table is 2 times of drop expects pipe sectional area.Drop material
Pipe height is 120mm；On drop expects pipe tube wall, 2 circular spout holes are set in horizontal direction, and the total sectional area of spout hole is drop
The 30% of expects pipe sectional area；The overflow centerline hole set on drop expects pipe tube wall is away from tower tray upper surface 50mm.The ragged edge edge of tower tray
It sets with the upward flanging in direction, flanging height is 50mm.The tower tray is assembled by 9 pieces of small tower trays, every piece small tower tray
On be both provided with 2 tooth weir formulas and subtract and rush equal flow table.Distributor is triangularly arranged on tower tray.Catalyst bed radial temperature and
The temperature difference is 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 tooth weir formula 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 (22)
1. a kind of tooth weir formula, which subtracts, rushes equal flow table, it is characterised in that：Tooth weir formula, which subtracts, rushes equal flow table including tower tray and is arranged at tower
Distributor on disk；The distributor includes equal flow table, drop expects pipe and connecting rod, and equal flow table is arranged above drop expects pipe, equal flow table
It is connected with drop expects pipe by connecting rod.
2. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, the equal flow table is polygonized structure.
3. tooth weir described in accordance with the claim 2 formula, which subtracts, rushes equal flow table, wherein, the equal flow table is disc-shaped structure, triangular plate
Shape structure, diamond shape disk-shaped structure, square disk-shaped structure or trapezoidal disk-shaped structure are preferably disc-shaped structure.
4. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, the ragged edge of the equal flow table has side along setting
To the flanging flipped up.
5. subtract according to the tooth weir formula described in claim 4 and rush equal flow table, wherein, tooth socket is set on the flanging, the tooth socket
Shape is triangle, quadrangle or arc-shaped, is preferably triangle.
6. subtract according to the tooth weir formula described in claim 5 and rush equal flow table, wherein, the height of the tooth socket for flanging height 5% ~
100%, it is preferably 30% ~ 60%.
7. subtract according to the tooth weir formula described in claim 4 and rush equal flow table, wherein, the flanging height is 5 ~ 80mm, preferably 30 ~
50mm。
8. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, the sectional area of the equal flow table is drop expects pipe section
Long-pending 1 ~ 10 times is preferably 2 ~ 5 times.
9. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, offer spout hole in the drop expects pipe.
10. subtract according to the tooth weir formula described in claim 9 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 tooth weir formula described in claim 9 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 tooth weir formula described in claim 9 and rush equal flow table, wherein, the overflow centerline hole is away from tower tray upper surface 5
~ 100mm is preferably 30 ~ 50mm.
13. subtract according to the tooth weir formula described in claim 9 and rush equal flow table, wherein, the spout hole quantity is 1~6, is preferably
1 ~ 2.
14. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, most lower edge and the drop expects pipe of the equal flow table
There are spaces, the space between most upper edge to form the flow channel of gaseous phase materials.
15. tooth weir according to claim 14 formula, which subtracts, rushes equal flow table, wherein, the spatial altitude is 5 ~ 200mm, is preferably
10~50mm。
16. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, the ragged edge of the tower tray has side along setting
To upward flanging.
17. subtract according to the tooth weir formula described in claim 16 and rush equal flow table, wherein, the flanging height is 5 ~ 80mm, is preferably
30~50mm。
18. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, the distributor is triangular in shape on tower tray, four
Side shape, diamond shape or circular arrangement.
19. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, the equal flow table it is identical with drop expects pipe quantity or
Difference is preferably identical.
20. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, center line and the drop expects pipe of the equal flow table
Center line coincidence or misaligned, preferably overlaps.
21. tooth weir described in accordance with the claim 1 formula, which subtracts, rushes equal flow table, wherein, tooth weir formula, which subtracts, rushes equal flow table and is arranged at instead
Answer in the upper cover of device or be arranged at reactor shell upper end.
22. subtract according to the tooth weir formula described in claim 21 and rush equal flow table, wherein, when tooth weir, formula, which subtracts, rushes equal flow table and is arranged at reaction
During device cylinder upper end, the top of top distribution plate in reactor is arranged at.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052855.4A CN108097178B (en) | 2016-11-25 | 2016-11-25 | Tooth weir type impact reduction and flow equalization disc |
| KR1020170158615A KR101989328B1 (en) | 2016-11-25 | 2017-11-24 | Impact-Reducing Uniform-Flowing Disc and Reactor |
| 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 |
| 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 |
|---|---|---|---|
| CN201611052855.4A CN108097178B (en) | 2016-11-25 | 2016-11-25 | Tooth weir type impact reduction and flow equalization disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108097178A true CN108097178A (en) | 2018-06-01 |
| CN108097178B CN108097178B (en) | 2021-06-04 |
Family
ID=62205037
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611052855.4A Active CN108097178B (en) | 2016-11-25 | 2016-11-25 | Tooth weir type impact reduction and flow equalization disc |
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| Country | Link |
|---|---|
| CN (1) | CN108097178B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109200952A (en) * | 2018-11-15 | 2019-01-15 | 中石化炼化工程（集团）股份有限公司 | A kind of gas-liquid mixed component and the catalyst bed structure for reactor |
| CN113490637A (en) * | 2019-02-22 | 2021-10-08 | 亚拉国际有限公司 | Bleaching tower and method for nitric acid production |
| CN113842840A (en) * | 2021-10-26 | 2021-12-28 | 中国石油化工股份有限公司 | Tubular gas-liquid distributor |
| CN115335323A (en) * | 2020-04-29 | 2022-11-11 | 雅苒国际集团 | Absorption column and process for producing nitric acid comprising a feed box with a serrated weir and a structured packing |
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