CN106040109A - Gas flow distribution plate and reactor with same - Google Patents
Gas flow distribution plate and reactor with same Download PDFInfo
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- CN106040109A CN106040109A CN201610516252.9A CN201610516252A CN106040109A CN 106040109 A CN106040109 A CN 106040109A CN 201610516252 A CN201610516252 A CN 201610516252A CN 106040109 A CN106040109 A CN 106040109A
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- distribution
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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
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
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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
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/1818—Feeding of the fluidising gas
- B01J8/1827—Feeding of the fluidising gas the fluidising gas being a reactant
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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
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/1872—Details of the fluidised bed reactor
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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
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00796—Details of the reactor or of the particulate material
- B01J2208/00938—Flow distribution elements
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a gas flow distribution plate and a reactor with the same. A panel-shaped gas flow distribution plate is modified to form the gas flow distribution plate. The gas flow distribution plate comprises a protrusion structure and a distribution plate body structure. The protrusion structure is upwardly protruded along the central axis of the distribution plate, and the distribution plate body structure downwardly extends along the peripheral edge of the protrusion structure to reach the inner wall of a barrel of the reactor. The gas flow distribution plate and the reactor have the advantages that the distribution plate and a lower seal head are in a mouth-to-mouth enclosed large space relationship with each other, overlapped nested narrow gap structures formed when the original funnel-shaped distribution plate deeply penetrates into an existing lower seal head can be eliminated, flow states of process gas can be improved after the process gas from the bottom of the reactor flows into large spaces, the flow velocity can be reduced, pressures can be balanced, impact vibration can be prevented, then the process gas can flow out from gas flow holes, and accordingly balanced fluidized beds can be formed by materials which move down from the upper portion of the reactor; the gas flow balance, the flowability of granular products and the fatigue resistance of internal structures are taken into accounts, the gas flow distribution plate and the reactor are simple in combination structure and convenient to mount and maintain, the reactor is high in operational flexibility, reaction heat can be quickly evacuated, the safety of shell walls can be protected, and the service lives of the gas flow distribution plate and the reactor can be prolonged.
Description
Technical field
The application relates to each with chemical industry, Coal Chemical Industry, chemical fertilizer industry and other various chemical equipments of petroleum refining
Kind of large-scale high-grade reactor technology field, such as, fluidized-bed polymerization reactor, carries out the hydrogenation reaction reacted by catalyst
Device or desulfurization reactor etc., particularly relate to a kind of airflow-distribution board and reactor thereof.
Background technology
Chemical reactor, include include cylinder, be arranged at cylinder two ends end socket, be arranged at end socket material turnover
Mouthful, the airflow-distribution board that is arranged in cylinder and for supporting the inner supporting structure of airflow-distribution board, or cylinder inner catalyst
Supporting structure, have also includes pressure vessel inside surfacing applied corrosion resistant lining.
Developing towards the direction of scale recently as petrochemical plant, it is increasing that the volume of reactor becomes,
Not only floor space is big, and tall and big device structure brings a series of problem to design, manufacture, transportation, installation, maintenance.
Another kind of problem is that course of reaction logistics capacity is big, gas velocity causes vibration soon and easily, difficult in maintenance.
Additionally, along with social economy's demand to new grades reactor, use traditional reactor can not meet technique need
Ask.New technology is simple, operating condition is gentle, simplifies operation, and therefore, yield is high, and raw material, energy expenditure ratio are low, fluidisation
One of bed reactor then development trend representing state-of-the-art technology, its structure and the technique that it is critical only that inside reactor of technology
Edema caused by disorder of QI fabric swatch.
In fluid bed production technology, gas distribution grid is to ensure that gas-solid fluidized bed have good and stable fluidized state
Important component, directly affect the endocorpuscular flow pattern of fluid bed and fluidization uniformity, be that fluidized bed reactor designs is musted
The critical component that need to consider.Gas distribution grid determines generation frequency and the original state of gas-solid contact, the internals of bubble
Then directly affect whole fluidised form.
In prior art, the gas-solid fluidized bed distribution grid of inside reactor is circle flat structure, circular platform type distribution grid
With structures such as funnelform turbinations, more or less also exist that anti-deposit is indifferent, stability is the highest, easily by active substance
The defects such as blocking, there is also the problems such as original distributing plate structure function adaptability after reactor shell structure large-scale.
Wherein the instability problem of fluidizing gas bed can be divided into the two big classes such as primary unstability and secondary unstability.
Distribution grid is that the flat structure of circle is deposited subject matter both ways and is: one is that production capacity is restricted, be same
Design two kinds of through holes on block flat board, the air-flow under flat board through through hole toward while stablizing upstream, allow washer
Granule product is through through hole swimmingly toward dirty, and along with the lifting of production capacity, the two passes of raising and lowering can occur blocking at random；
Two is that the lateral forces relatively housing of circle flat board is poor, is easily deformed, and structure and air-flow deviate original design.But plate distribution
Plate is due to its simple in construction, easily manufactured, and is widely used.But this structure has one in fluid-bed granulation
Fixed defect, on the basis of analyzing plate distribution grid deficiency, circular platform type distribution grid and funnel conical structure are changed
Enter.The outlet that product particle collects from funnel central bottom is sent, and process gas then passes through the air-flow of circumferentially opening on distribution grid
Hole is flowed out.
Distribution grid is that funnelform turbination structure exists three aspect subject matters:
One is the three-dimensional non-equilibrium of process gas fluid bed, and process gas forms spiralling air-flow in distribution grid funnel, rotation
Stream causes circumference fluidised form and axial fluidised form the most unbalanced in ascending motion because of energy dissipation so that material from top to down exists
Reaction progressively generates granule, the peritropous shell wall of granule stream thick under the centrifugal action of eddy flow, easily causes radial flow
State is unbalanced.Second, it is the stream pressure regulation and control difficulty at distribution grid upper shed, this is due to funnelform turbination structure
Distribution grid space below is gradually expanded during rising, and the process gas below distribution grid is in the process risen
In, make the process gas total amount below distribution grid gradually decrease because part flows out from radial opening, thus air pressure substantially reduces.
3rd, it is that distribution grid funnel gos deep into being formed in low head overlapping nested relationship, the process gas come in from end socket limits because of space
Bottom strong erosion funnel, cause the strong variations of air flow press molding and the vibration of funnel, connection loosing that vibrating fatigue causes or
Cracking produces again the process gas runner that some are additional, upsets original design of Fluidized bed, enters structure and technique vicious cycle.This
Outward, distribution grid originally there is also some other problemses being not easy to mounting and adjusting.
Analyze the reason of the problems referred to above, be distributing plate structure design mainly to highlight infundibulate for collecting product particle
Function, and despised its impact on air-flow, have ignored the effect of process from the visual angle emphasizing result.Analysis is had to refer to
Going out, two dimensional fluidized bed is owing to being affected by wall effect, and its fluidal texture and three-dimensional fluidized bed exist bigger difference, and gas eddy is only
Can develop at two-dimensional space, in bed, be easier to that the flat gas eddy of large scale occurs.Therefore, in two-dimensional bed, easily form joint gush etc. no
Stabilization fluid situation, and the overall circulation of similar three-dimensional bed can not be formed.Also point out after having comprehensive study analysis, strengthen distribution
The gas speed of plate central area is crucial.
In addition to distributing plate structure, the pore on distribution grid is also the key affecting fluidized bed state.In each uneven cloth hole
In fluid bed, the gas eddy produced in big hole separation arrangement air distribution plate fluid bed is relatively small and dispersibility preferable, gas phase velocity
Vector distribution is relatively decentralized homogeneous, and fluid effect is best.
Therefore, for the problems referred to above defect, a kind of airflow-distribution board of research and development, it is possible to make process gas in barrel type reactor
Equiblibrium mass distribution flows up, and makes the grain products of generation be collected by distribution grid simultaneously and discharges from bottom, moreover it is possible to opposing logistics capacity
Greatly, gas velocity is fast and the vibrating fatigue that causes, will meet pressure drop stability and the good anti-deposit distribution grid of fluidization quality, application
In petrochemical industry reactor, steady production and economic benefit had important engineering significance.
Summary of the invention
One of purpose of the application is to avoid weak point of the prior art to provide a kind of airflow-distribution board, it is possible to
Make process gas equiblibrium mass distribution in reactor flow up, make the material particles product of generation be converged by this airflow-distribution board simultaneously
Collect and discharge from bottom, moreover it is possible to the vibrating fatigue that opposing logistics capacity is big, gas velocity causes soon, it is for meeting pressure drop stability and stream
Change the second best in quality anti-deposit distribution grid.
The two of the purpose of the application are to avoid weak point of the prior art to provide one to have said flow and divide
The reactor of fabric swatch, it can have concurrently simultaneously, and air-flow harmony is good, grain products good fluidity and internal structure fatigue durability good.
One of purpose of the application is achieved through the following technical solutions:
Providing a kind of airflow-distribution board, plate shaped airflow-distribution board improve being formed, wherein, described airflow-distribution board includes edge
Bulge-structure that the axis of described airflow-distribution board raises up and anti-along extending downward along the week of described bulge-structure
Answer the distribution grid body construction of the cylinder inboard wall of device.
Wherein, described bulge-structure is domes.
Wherein, described distribution grid body construction is the hyperboloid structure of epirelief, recessed hyperboloid structure and taper seat knot
Any one in structure or several combination.
Wherein, the angle between described distribution grid body construction and horizontal plane is set to 20 ° to 30 °.
Wherein, described airflow-distribution board is provided with the airflow hole radially arranged.
Wherein, described airflow-distribution board includes being positioned at the pole plate of middle setting and along week of described pole plate along extended
Distribution grid body construction, this distribution grid body construction be by several flanging tiles splicing connect arrange distribution grid bulk junction
Structure.
Wherein, all sides of described flanging tile offer material guide hole.
The two of the purpose of the application are achieved through the following technical solutions:
Provide a kind of reactor, the end socket including cylinder, being arranged at cylinder two ends, the material import and export being arranged at end socket, if
The airflow-distribution board that is placed in cylinder and for supporting the inner supporting structure of airflow-distribution board, wherein, described airflow-distribution board is
A kind of airflow-distribution board described above.
Wherein, described inner supporting structure includes being arranged at the support ring of the inwall of described cylinder, for carrying described air-flow
The grid frame supported of distribution grid and be arranged at the sealing supporting material guide structure above described grid frame supported.
Wherein, described hopper weir plate that supporting material guide structure includes that L-shaped arranges is sealed and from the inclination of described hopper weir plate
To the guide body of described airflow-distribution board, described hopper weir plate is sealedly attached to the inwall of described cylinder.
The beneficial effect of the application: a kind of airflow-distribution board of the application, is improved by plate shaped airflow-distribution board and is formed, its
In, described airflow-distribution board includes the bulge-structure raised up along the axis of described airflow-distribution board and along described projection
The week of structure is along the distribution grid body construction of the cylinder inboard wall extending downward reactor.The airflow-distribution board of the application and lower envelope
Capitiform becomes mouth-to-mouth and encloses large space relation, eliminates in original infundibulate distribution grid gos deep into low head and forms overlapping suit
The structure of narrow gap relationships, improves the fluidised form after the process gas come in from reactor bottom enters large space, reduced velocity flow,
Pressure equalizes, it is to avoid impact shock, is flowed out by the radial opening on airflow-distribution board, makes to get off from reactor top
Material formed equilibrium fluid bed.The air flow method board space of the application gradually tapers up during rising, for keeping steady
Fixed air pressure provides structure and ensures, and original funnelform turbination structure contrast, below airflow-distribution board
Space gradually expands during rising, and is difficult to regulation and control air pressure.By contrast, this technology is very beneficial for radial opening outflow
Process gas and distribution grid above process gas maintain metastable air pressure operating mode, in addition, this airflow-distribution board
Take into account that air-flow is harmonious simultaneously, grain products mobility and internal structure fatigue durability, have that anti-deposit ability is strong, goods fluid
Fully, substantially there is no dead band, produce the advantages such as stable, flexible operation and production cycle length, and combinative structure is simple, installs and ties up
Protecting conveniently, its supporting member stress is more reasonable, and stability is high, and space layout is more safe and scientific so that have this airflow-distribution board
The elasticity of operation of reactor bigger, product particle size and composition greater homogeneity, and reaction heat can be withdrawn from more promptly, protect
Protective case wall safety, increases the service life.
Accompanying drawing explanation
Utilize accompanying drawing that the application is described further, but the embodiment in accompanying drawing does not constitute any limit to the application
System, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to the following drawings
Other accompanying drawing.
Fig. 1 is the one of which structural representation of a kind of airflow-distribution board of the application.
Fig. 2 is the one of which structural representation of a kind of airflow-distribution board of the application.
Fig. 3 is that the inner supporting structure circumferentially A of a kind of airflow-distribution board of the application is to the structural representation at visual angle.
Fig. 4 is that the inner supporting structure of a kind of airflow-distribution board of the application is along overlooking the B structural representation to visual angle.
Fig. 5 is the one of which structural representation of a kind of airflow-distribution board of the application.
Fig. 6 is the one of which structural representation of a kind of airflow-distribution board of the application.
Fig. 7 is the one of which structural representation of a kind of reactor of the application.
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7 include:
Cylinder 1, upper cover 2, spherical low head 3, upper shed 4, under shed 5, bearing 6, support ring 7, process gas import 8, air-flow
Distribution grid 9, bulge-structure 91, distribution grid body construction 92, grid frame supported 11, hopper weir plate 12, guide body 13, flanging tile
14, airflow hole 15, material guide hole 16, lattice 17, ellipsoidal head 18, cone end socket 19.
A is the supporting structure circumferential direction of airflow-distribution board, and B is the vertical view direction of the supporting structure of airflow-distribution board, and C is
Product particle is at the moving direction of airflow-distribution board upper surface.
Detailed description of the invention
With the following Examples the application is described in further detail.
Embodiment 1.
One of detailed description of the invention of a kind of airflow-distribution board of the application, with reference to shown in Fig. 1, its structure is by plate shaped gas
Flow point fabric swatch improves and is formed, and the innovation of the application is, described airflow-distribution board includes along described airflow-distribution board
Bulge-structure 91 that axis raises up and along week of described bulge-structure 91 along cylinder 1 inwall extending downward reactor
Distribution grid body construction 92.Airflow-distribution board and the low head of the application innovation are formed and mouth-to-mouth enclose large space relation,
Eliminate in original infundibulate distribution grid gos deep into low head and form the overlapping structure being set with narrow gap relationships, improve from instead
Fluidised form after answering the process gas come in bottom device to enter large space, reduced velocity flow, pressure equalizes, it is to avoid impact shock, the most again
Flowed out by the radial opening on airflow-distribution board, make the material got off from reactor top form the fluid bed of equilibrium.This Shen
Air flow method board space please gradually tapers up during rising, and ensures for keeping stable air pressure to provide structure, and former
The funnelform turbination structure contrast come, airflow-distribution board space below gradually expands during rising,
It is difficult to regulation and control air pressure.By contrast, this technology be very beneficial for radial opening flow out process gas and distribution grid above work
Skill gas maintains the operating mode of metastable air pressure, and in addition, this airflow-distribution board takes into account air-flow harmony, grain products simultaneously
Mobility and internal structure fatigue durability, have that anti-deposit ability is strong, goods fluid does not has dead band fully, substantially, it is stable to produce,
The advantages such as flexible operation and production cycle length, and combinative structure is simple, installs and easy to maintenance, its supporting member stress is more reasonable,
Stability is high, and space layout is more safe and scientific so that the elasticity of the operation with the reactor of this airflow-distribution board is bigger, produces
Product granular size and composition greater homogeneity, and reaction heat can be withdrawn from more promptly, protect shell wall safety, increase the service life.
Concrete, described bulge-structure 91 is domes.There is pinnacle and towering conical distribution grid can cause
Fluid bed wind speed profile is uneven, and its bad performance is in high wind speed district, and high velocity air carries solid particle with gas eddy form certainly
Lower and upper motion, in low wind speed district, solid particle slowly declines under self gravitation effect, thus forms shuttling movement.Difference
In prior art, the application uses the structure on arch top, it is to avoid the problem defect of above-mentioned record.
Concrete, with reference to shown in Fig. 1, Fig. 5 and Fig. 6, described distribution grid body construction 92 is part pyramid like configuration.The application creates
The new conical structure with arch top and low head are formed and mouth-to-mouth enclose large space relation, eliminate original infundibulate and divide
Fabric swatch forms the overlapping structure being set with narrow gap relationships in going deep into low head, improve the technique come in from reactor bottom
Gas enters the fluidised form after large space, reduced velocity flow, and pressure equalizes, it is to avoid impact shock, the most again by airflow-distribution board
Radial opening flows out, and makes the material got off from reactor top form the fluid bed of equilibrium.
Concrete, the angle between described distribution grid body construction 92 and horizontal plane is set to 20 ° to 30 °.There is pinnacle
And towering conical distribution grid can cause fluid bed wind speed profile uneven, its bad performance is in high wind speed district, at a high speed
Air-flow carries solid particle and moves the most from bottom to top, and in low wind speed district, solid particle is slow under self gravitation effect
Slow decline, thus form shuttling movement.Consider solid particle volume fraction and speed, be preferably designed as short and small hillside knot
The distribution grid of structure, selects distribution grid angle of inclination the most suitable between 20 ~ 30 °.
Concrete, with reference to shown in Fig. 2, described airflow-distribution board is provided with the airflow hole 15 radially arranged.Radially arrangement
Airflow hole 15 can include positive radial opening and negative radial opening, horizontal radial opening, updip radial opening and have a down dip radially
Opening, or the combination of these openings.The setting of above-mentioned opening can be in the way of considering mutually to stagger, it is simple to being in operation can phase
Offset fraction active force mutually, be substantially reduced the probability of vibration.Process gas passes through air flow method after entering reactor bottom
The above-mentioned airflow hole 15 being radially arranged on plate sprays, and makes the material got off from reactor top and the process gas risen from below
Form equilibrium and the product fluidized bed state being fully contacted.
Concrete, with reference to shown in Fig. 2, Fig. 3 and Fig. 4, pole plate that described airflow-distribution board includes being positioned at middle setting and
Along week of described pole plate along extended distribution grid body construction 92, this distribution grid body construction 92 is by several flangings watt
Sheet 14 splicing connects the distribution grid body construction 92 arranged.As in figure 2 it is shown, improve gas distribution by changing gas distribution grid shape
Mode, devises inner circle-outer shroud two-way of the same area various inlet mode, and the pole plate of middle higher domed structure makes it
Having self-stability, flanging tile 14 facilitates grain products to flow to periphery under Gravitative Loads, also allows for grain products and gas divides
Stream.
Separately, the opening size in said flow hole 15 has different optimization according to flanging tile 14 place radial position.Close
The air pressure of the airflow hole 15 being radially arranged of cylinder 1 inwall of reactor and the airflow hole being radially arranged in the middle of reactor
The air pressure of 15 slightly difference, needs the size by opening size to regulate its air pressure and flow velocity, makes more than airflow-distribution board
Fluid bed operating mode equalizes.
Separately, the opening shape in said flow hole 15 has different optimization according to flanging tile 14 place radial position.Also it is
In order to make the fluid bed operating mode on airflow-distribution board equalize, opening shape can be falcate, tongue shape, crack, circle, oblate
Shape, triangle, strip, rectangle, also include the combination of these openings, etc..
Separately, the thickness of described gas distribution grid flanging tile 14 has different optimization according to the radial position of tile place.Lean on
The flanging tile 14 of proximal response device shell wall bears the weight effect of the tile in the middle of reactor, is also subjected to more product weight and makees
With, need higher thickness.
Concrete, with reference to shown in Fig. 3, all sides of described flanging tile 14 offer material guide hole 16.Its effect is guiding
Grain downslide flows to reactor lower part mouthpiece bottom end socket and goes out.
Embodiment 2.
The two of the detailed description of the invention of a kind of airflow-distribution board of the application, the main technical schemes of the present embodiment and enforcement
Example 1 is identical, the most unaccounted feature, uses the explanation in embodiment 1, no longer repeats at this.This enforcement
Example is with the difference of embodiment 1, with reference to shown in the airflow-distribution board in Fig. 7 structure of reactor, wherein, and described distribution grid body
Structure 92 is the hyperboloid structure of epirelief.
Embodiment 3.
The three of the detailed description of the invention of a kind of airflow-distribution board of the application, the main technical schemes of the present embodiment and enforcement
Example 1 is identical, the most unaccounted feature, uses the explanation in embodiment 1, no longer repeats at this.This enforcement
Example is with the difference of embodiment 1, and wherein, described distribution grid body construction 92 is recessed hyperboloid structure.
Embodiment 4.
One of detailed description of the invention of a kind of reactor of the application, with reference to shown in Fig. 7, including cylinder 1, is arranged at cylinder
The upper cover 2 at 1 two ends and spherical low head 3, it is arranged at the upper shed 4 of upper cover 2, is arranged at the under shed of spherical low head 3
5, upper shed 4 is material inlet, and under shed 5 is material outlet, is arranged at the airflow-distribution board in cylinder 1 and for supporting air-flow
The inner supporting structure of distribution grid 9, above-mentioned technical pattern feature is essentially identical with the structure of reactor of the prior art, and this Shen
A kind of reactor please also possesses other basic structure of reactor of the prior art.
The innovation of the application is, described airflow-distribution board 9 is a kind of airflow-distribution board described in above-described embodiment 1
9.Certainly any one airflow-distribution board 9 structure in above-described embodiment 2 and embodiment 3 can also be selected.
Concrete, described inner supporting structure includes being arranged at the support ring 7 of the inwall of described cylinder 1, described for carrying
The grid frame supported 11 of airflow-distribution board 9 and be arranged at the sealing supporting material guide structure above described grid frame supported 11.Wherein, prop up
Carrier ring 7 can be the domain, it is also possible to be segmentation, but retention gap is not wanted in the end of section and section, typically can be welded on
On the inwall of reactor shell 1；Grid frame supported 11 is then placed in support ring 7, and bearing contact face between the two can be radially
Slide, but can not circumferentially rotate, slide to arrange and grid frame supported 11 can be avoided to be caused distortion by the deformation displacement of reactor
Deformation.
This gas distribution grid is by middle pole plate and the combinative structure of the flanging tile 14 of periphery, described airflow-distribution board
The arch web frame that the pole plate of 9 and the supporting structure of tile are made up of beam, pole plate and tile are fastened by bolts beneath supporting
On rack 11.It is also possible that the supporting structure of described gas distribution grid pole plate and tile is post and the truss structure of beam composition,
Hold truss 17 to be fixed on cylinder 1 internal face of reactor by welding or other modes.As shown in Figure 6, then lattice 17
It is fixed on the internal face of cylinder 1 of reactor.
As it is shown in figure 1, improve gas distribution mode by changing gas distribution grid shape, devise inner circle-outer shroud identical faces
Long-pending two-way various inlet mode, the pole plate of middle higher domed structure makes it have self-stability, and tile facilitates granule to produce
Product flow to periphery under Gravitative Loads, also allow for grain products and gas distribution, near the taper seat inclination angle of reactor shell wall
Can be different from the taper seat inclination angle in the middle of reactor, in order to reduce the height of whole arch, expand space, reaction zone, circular cone
The big I at inclination angle, face is measured by the Self-locking angle of product particle, as long as taper seat inclined plane makes product particle to stagnate by heap
Stay.Grid frame supported 11 is bearing in support ring 7, and bearing contact face between the two can radially slide, in order to avoid support mesh
Frame 11 is then welded on the internal face of reactor by the deformation displacement torsional deformation of reactor, support ring 7.
Concrete, described seal hopper weir plate 12 that supporting material guide structure includes that L-shaped arranges and from described hopper weir plate
The 12 guide bodies 13 tilting to described airflow-distribution board 9, described hopper weir plate 12 is sealedly attached to the inwall of described cylinder 1.As
Shown in Fig. 5, wherein the L shape of hopper weir plate 12 makes have elasticity with the contact internal walls of reactor shell 1, all the time with cylinder 1
Contact internal walls, very close to each other, it is to avoid process gas along cylinder 1 inwall short circuit rise.The effect of guide body 13 is to guide to glide
The granule of deflector chute to periphery focuses on the material mouth of tile further, flows to reactor lower part mouthpiece bottom end socket
Go out.
The peripheral structure that this sealing supporting material guide structure is supporting with airflow-distribution board 9, the airflow-distribution board of reference Fig. 29 weeks
Side supporting structural perspective, the view of the airflow-distribution board 9 periphery supporting structure circumferentially A of Fig. 3, the airflow-distribution board of Fig. 49 weeks
Side supporting structure along overlook B to view, wherein the L shape of hopper weir plate 12 makes cylinder 1 contact internal walls with reactor have
Flexible, hopper weir plate 12 should flanging tile 14 installation check in airflow-distribution board 9 errorless after, could install, pass through spiral shell
Bolt is fastened on grid frame supported 11 or flanging tile 14, notes adjusting the L shape of hopper weir plate 12 so that it is tightened rear and shell
Internal wall has certain elastic compression to contact, very close to each other, it is to avoid process gas rises along the inwall short circuit of reactor shell 1.Lead
Material body 13 is then welded to hopper weir plate 12 by the welding of small parameter, it is noted that eliminate gap in assembly welding, it is to avoid product particle leads to
Cross gap to conceal.
Therefore, by contrast, this technology is very beneficial for above process gas and the airflow-distribution board 9 of radial opening outflow
Process gas maintain the operating mode of metastable air pressure, there is the reactor of said flow distribution grid 9 and take into account air-flow equilibrium simultaneously
Property, grain products mobility and internal structure fatigue durability, combinative structure is simple, installs and easy to maintenance, its supporting member stress
More reasonable, stability is high, and space layout is more safe and scientific, and the operating flexibility of reactor is bigger, product particle size and composition
Greater homogeneity, and reaction heat can be withdrawn from more promptly, protect shell wall safety, increase the service life.
The building course of said flow distribution grid 9 includes: (1) by the structural parameters of reactor and product particle size, just
The inclination angle of step design airflow-distribution board 9 and other size of main body, and according to airflow-distribution board 9 size Preliminary design supporting structure
Size；(2) technological parameter and production capacity according to reactor determine process gas flow and elastic range thereof, estimate process gas further
Flow is along the distribution of airflow-distribution board 9；(3) airflow hole 15 on design airflow-distribution board 9, the numerical simulation carrying out fluidised form is divided
Analysis, and adjusting and optimizing structure；(4) design material guide hole 16；(5) its grid frame supported 11 He is designed according to the distributing plate structure determined
Support ring 7；(6) punching press distribution grid tile, its overall package of pre-assembled detection；(7) assembly welding support ring 7, it is to avoid excessive weldering
Connect residual stress, eliminate welding residual stress as necessary by heat treatment, and the bearing-surface of reconditioning support ring 7 is smooth；(8) same
Parameter assembly welding grid frame supported 11 at the bottom of Shi Caiyong, it is to avoid excessive welding residual stress；(9) interim fixed bearing rack 11 is to supporting
On ring 7, after distribution grid tile and pole plate are installed, then hopper weir plate 12 and guide body 13 are installed；(10) packaging and transport is provided to say
Bright book, causes distribution grid to loosen or deformation in prevention transhipment；(11) providing instruction for mounting, reactor feeds intake before running and pulls down tightly
Gu grid frame supported 11 and the bolt of support ring 7, both are made relatively to slide.
Separately, when reactor diameter is bigger, it is positioned at the spherical low head 3 of cylinder 1 bottom or oval low head 18(reference
Shown in Fig. 6) cone low head 19(can be used with reference to shown in Fig. 7) structure, functionally, compared to the former, be conducive to
Product particle is assembled in the lower section of airflow-distribution board 9, is conducive to Simplified flowsheet technology in device fabrication.
Last it should be noted that, above example is only in order to illustrate the technical scheme of the application, rather than the application is protected
Protecting the restriction of scope, although having made to explain to the application with reference to preferred embodiment, those of ordinary skill in the art should
Work as understanding, the technical scheme of the application can be modified or equivalent, without deviating from the reality of technical scheme
Matter and scope.
Claims (10)
1. an airflow-distribution board, is improved by plate shaped airflow-distribution board and is formed, it is characterised in that: described airflow-distribution board includes
The bulge-structure that raises up along the axis of described airflow-distribution board and along week of described bulge-structure along extending downward
The distribution grid body construction of the cylinder inboard wall of reactor.
A kind of airflow-distribution board the most according to claim 1, it is characterised in that: described bulge-structure is domes.
A kind of airflow-distribution board the most according to claim 1, it is characterised in that: described distribution grid body construction is epirelief
Any one in hyperboloid structure, recessed hyperboloid structure and part pyramid like configuration or several combination.
A kind of airflow-distribution board the most according to claim 1, it is characterised in that: described distribution grid body construction and horizontal plane
Between angle be set to 20 ° to 30 °.
A kind of airflow-distribution board the most according to claim 1, it is characterised in that: described airflow-distribution board is provided with radially
The airflow hole of arrangement.
A kind of airflow-distribution board the most according to claim 1, it is characterised in that: described airflow-distribution board includes being positioned at centre
The pole plate that arranges and along week of described pole plate along extended distribution grid body construction, if this distribution grid body construction be by
Dry flanging tile splicing connects the distribution grid body construction arranged.
A kind of airflow-distribution board the most according to claim 6, it is characterised in that: all sides of described flanging tile offer leads
Material hole.
8. a reactor, the end socket including cylinder, being arranged at cylinder two ends, the material import and export being arranged at end socket, it is arranged at
Airflow-distribution board in cylinder and for supporting the inner supporting structure of airflow-distribution board, it is characterised in that: described airflow-distribution board
A kind of airflow-distribution board according to any one of the claims 1 to 7.
A kind of reactor the most according to claim 8, it is characterised in that: described inner supporting structure includes being arranged at described cylinder
The support ring of the inwall of body, for carrying the grid frame supported of described airflow-distribution board and being arranged at above described grid frame supported
Seal supporting material guide structure.
A kind of reactor the most according to claim 9, it is characterised in that: the described supporting material guide structure that seals includes that L-shaped sets
The hopper weir plate put and the guide body tilting to described airflow-distribution board from described hopper weir plate, described hopper weir plate seals even
It is connected to the inwall of described cylinder.
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| CN201610516252.9A CN106040109B (en) | 2016-07-04 | 2016-07-04 | A kind of airflow-distribution board and its reactor |
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| CN201610516252.9A CN106040109B (en) | 2016-07-04 | 2016-07-04 | A kind of airflow-distribution board and its reactor |
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| CN107042046A (en) * | 2017-02-09 | 2017-08-15 | 河北宏达环境工程有限公司 | A kind of airflow distribution device of electrostatic fabric filter |
| TWI717123B (en) * | 2019-11-27 | 2021-01-21 | 國立成功大學 | Air distributor for use in a fluidized bed |
| CN113059197A (en) * | 2021-03-04 | 2021-07-02 | 北京科技大学 | Large-breadth 3D printing forming bin structure |
| CN113648939A (en) * | 2021-09-09 | 2021-11-16 | 昆明理工大学 | Methyl chlorosilane gas distribution plate of fluidized bed reactor for synthesizing organic silicon monomer and design method thereof |
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| CN113648939A (en) * | 2021-09-09 | 2021-11-16 | 昆明理工大学 | Methyl chlorosilane gas distribution plate of fluidized bed reactor for synthesizing organic silicon monomer and design method thereof |
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| CN106040109B (en) | 2019-03-26 |
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