CN207324767U - A kind of inverted-cone distribution device in gas-fluid - Google Patents
A kind of inverted-cone distribution device in gas-fluid Download PDFInfo
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- CN207324767U CN207324767U CN201720657690.7U CN201720657690U CN207324767U CN 207324767 U CN207324767 U CN 207324767U CN 201720657690 U CN201720657690 U CN 201720657690U CN 207324767 U CN207324767 U CN 207324767U
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- cone
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- venthole
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Abstract
It the utility model is related to a kind of inverted-cone distribution device in gas-fluid, the base fixed including distribution cone, through distribution cone center and with distribution cone, it is in inverted cone shape to be distributed cone, multiple ventholes are provided with distribution cone, for each venthole in up-narrow and down-wide stepped, base is axially disposed through hole.The cone angle of the utility model distribution cone is 140 150 °, on the one hand increases the quantity of venthole, adds the percent opening of distribution cone, on the other hand reduces difficulty of processing；Silicon powder particle, which has reached, when percent opening is optimal 15.32%, in fluid bed is uniformly distributed, the purpose in no channel and dead band；It is in up-narrow and down-wide stair-stepping venthole to be provided with multiple in distribution cone, prevents silica flour from largely being revealed from distribution grid top along venthole, while avoid the blocking of venthole；Nozzle is provided with venthole, by adjusting jet size, changes size of the reacting gas by gas velocity after venthole.
Description
Technical field
It the utility model is related to a kind of inverted-cone distribution device in gas-fluid.
Background technology
In organosilicon fluidized bed reactor, gas distribution grid is a critical component, and main function is to be uniformly distributed air-flow,
Solid particle material is supported, solid particle material is heated evenly and is in fluidized state.In the distribution grid of existing design, divide
Fabric swatch in plate, is set according to conventional knowhow to the venthole set thereon, without rigorous theoretical foundation,
Percent opening is undesirable so that the reaction effect of gas and silica flour is poor；And venthole is straight hole, is easy to cause airflow direction face
Bed, easily makes bed form channel；Contacted in addition, existing between percent opening and distribution anode drop, so that distribution anode drop
It is undesirable, cause operating difficulties, and yield reduces.
Utility model content
The utility model overcomes the deficiencies in the prior art, there is provided a kind of inverted-cone distribution device in gas-fluid simple in structure.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of inverted-cone distribution device in gas-fluid, including
The base for being distributed cone, being fixed through the distribution cone center and with the distribution cone, the distribution cone is in inverted cone shape,
Multiple ventholes are provided with the distribution cone, each venthole is in up-narrow and down-wide stepped, and the base is along axis
To being provided through hole.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises the distribution cone
The cone angle of body is 140-150 °.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises multiple described logical
Stomata is distributed using the center line of the distribution cone as the center of circle in concentric circles, with being sequentially increased for the circular diameter with one heart, institute
The quantity for stating venthole increases successively.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises the distribution cone
The percent opening of body is 10.23%~15.84%.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises each described logical
Nozzle is provided with stomata.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises each described logical
Stomata includes first through hole and the second through hole, and the aperture of the first through hole is less than the aperture of second through hole, the nozzle
In inverted T-shaped, the nozzle is axially disposed spray orifice, and the upper end of the nozzle is stretched into the first through hole, the nozzle
Lower end is installed in second through hole.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises that described second is logical
Gasket is placed with hole, the upper end of the nozzle is stretched into the first through hole through the gasket, and the lower end of the nozzle leads to
Plug screw is crossed in second through hole.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises the spray orifice bag
Include sequentially connected vertical holes and bellmouth up and down.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises the distribution cone
The top outer of body is fixed with bracing ring.
In one preferred embodiment of the utility model, a kind of inverted-cone distribution device in gas-fluid further comprises the distribution cone
Two lifting lugs are symmetrically arranged with body.
The utility model solves defect present in background technology, and the utility model has the advantages that：
(1) cone angle for being distributed cone is 140-150 °, on the one hand increases the quantity of venthole, adds opening for distribution cone
Porosity, substantially increases the reaction effect of gas and silica flour, on the other hand reduces difficulty of processing, optimum taper angle is 145 °；
(2) it is theoretical according to distribution packing free ratio and pressure drop relationships, the arrangement of venthole is set to be distributed the center line of cone
For the center of circle, it is uniformly distributed in concentric circles, and being incremented by with concentric circular diameter, the increased number of venthole, when percent opening is
Silicon powder particle, which has reached, when optimal 15.32%, in fluid bed is uniformly distributed, the purpose in no channel and dead band；
(3) it is in up-narrow and down-wide stair-stepping venthole to be provided with multiple in distribution cone, prevents silica flour from distribution grid
Portion is largely revealed along venthole, while avoids the blocking of venthole；
(4) nozzle is provided with venthole, by adjusting jet size, can effectively change the size in venthole aperture,
Adjustment flux of the reacting gas unit interval by venthole in real time, changes size of the reacting gas by gas velocity after venthole,
Easy to be applicable in different duty requirements.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the front sectional view of the preferred embodiment of the utility model；
Fig. 2 is the structure diagram that the venthole of the preferred embodiment of the utility model is arranged in distribution cone；
Fig. 3 is the enlarged diagram of I in Fig. 1；
Fig. 4 is the top view of the preferred embodiment of the utility model.
Embodiment
The utility model is described in further detail presently in connection with drawings and examples, these attached drawings are simplified
Schematic diagram, only illustrates the basic structure of the utility model in a schematic way, therefore it only shows the structure related with the utility model
Into.
As shown in Figure 1, Figure 2, Figure 4 shows, a kind of inverted-cone distribution device in gas-fluid, including be distributed cone 2, bored through distribution
2 center of body and the base 4 fixed with distribution cone 2, distribution cone 2 is in inverted cone shape, adds the percent opening of distribution cone 2, greatly
The big reaction effect for improving gas and silica flour, is distributed in cone 2 and is provided with multiple ventholes 6, and each venthole 6 is bored along distribution
The axial setting of body 2, each venthole 6 prevent silica flour from being carried out from distribution grid top along venthole 6 in up-narrow and down-wide stepped
Substantial amounts of leakage, while the blocking of venthole 6 is avoided, base 4 is axially disposed through hole 8, easy to the connection with air inlet pipe.
The cone angle A of the utility model preferred distribution cone 2 is 140-150 °, and the setting of the angle, on the one hand further increases
Add the quantity of venthole 6, added the percent opening of distribution cone 2, substantially increase the reaction effect of gas and silica flour；It is another
Aspect, considers from the angle of manufacture installation, if inclination angle is excessive, is distributed the difficulty of processing increase of venthole 6 in cone 2,
Processing for distribution grid takes time and effort；If inclination angle is too small, the setting of 6 multi-quantity of venthole is not utilized, to gas percent opening
Have a certain impact.The cone angle A of further preferably distribution cone 2 is 145 °, in actual production, can reach maximum perforate
Rate and take time and effort minimum.
The preferably multiple ventholes 6 of the utility model are distributed using the center line for being distributed cone 2 as the center of circle in concentric circles, with same
Circle diameter is sequentially increased, and the quantity of venthole 6 increases successively, is convenient for processing, and gas is distributed in reactor
It is even, while change airflow direction, avoid bed from forming channel.
As shown in Figure 1, Figure 3, nozzle 10 is provided with the preferred venthole 6 of the utility model, nozzle 10 is replaceable, Neng Goutong
The specific size for crossing adjustment nozzle 10 changes flux of the gas by 8 unit interval of nozzle, so as to change gas into dereaction
Gas velocity in device, effective influence pressure drop, plays a crucial role reaction process.Venthole 6 includes first through hole 12
With the second through hole 14, the aperture of first through hole 12 is less than the aperture of the second through hole 14, and nozzle 10 is in inverted T-shaped, and nozzle 10 is vertically
Spray orifice 16 is provided with, the upper end of nozzle 10 is stretched into first through hole 12, and the lower end of nozzle 10 is installed in the second through hole 14, when
When the specific size of nozzle 10 changes, the size of spray orifice 16 also changes correspondingly, so that changing gas passes through 8 unit interval of nozzle
Flux, so as to change the gas velocity that gas is entered in reactor, effective influence pressure drop.Gasket is placed with second through hole 14
18, the upper end of nozzle 10 is stretched into first through hole 12 through gasket 18, and the lower end of nozzle 10 is installed on second by plug screw 20 and leads to
In hole 14, nozzle 10 is stabilized in venthole 6.Venthole 6 further includes third through-hole 21, and the aperture of third through-hole 21 is more than second
The aperture of through hole 14.The top of nozzle 10 is oblique, between the busbar and horizontal line of angle of inclination B and distribution cone 2
Angle is equal, and in the present embodiment, angle of inclination B is 20 °.Spray orifice 16 includes upper and lower sequentially connected vertical holes 22 and bellmouth
24, prevent silica flour from largely being revealed from distribution grid top along spray orifice 16, while avoid the blocking of spray orifice 16.The present embodiment
The cone angle C of middle bellmouth 24 is 90 °.
For the ease of distribution cone 2 is installed in reactor, the top outer of the utility model preferred distribution cone 2 is consolidated
Surely there is bracing ring 26.
For the ease of picking and placeing to distribution cone 2, two lifting lugs are symmetrically arranged with the utility model preferred distribution cone 2
28。
The preferred through hole 8 of the utility model is up big and down small stepped hole, easy to place seal in through hole 8, with
Sealing is formed between air inlet pipe.
It is the flow velocity of hot-air and the major influence factors by distribution grid duct resistance in hole to be distributed packing free ratio, it is counted
Formula is：
U=2umf(2)
(ΔPD)SC=RSC▽PB (4)
RSC=0.01+0.2 [1-exp (- 0.5D/L)] (5)
▽PB=Lmf(1-εmf)(ρs-ρg) (6)
In formula, ω-distribution packing free ratio
ξ-distribution grid resistance coefficient
U-empty tower gas velocity, m/s
(ΔPD)SC- distribution grid critical pressure drop, Pa
umf- minimum fluidization velocity, m/s
L-bed is high, m
D-bed diameter, m
Lmf- reaction solid silicon powder particle material is high, m
εmfPorosity during-minimum fluidization velocity
ρsThe density of-reaction solid silicon powder particle, kg/m3
ρgThe density of-methyl chloride gas, kg/m3
μg- gas phase dynamic viscosity, Pas
Sphericity [Wen C Y, the Yu U H.A generalized method for related with porosity of solid particle
Predicting the inimum fluidization velocity [J] .AICh E Journal, 1966,12 (3):
610-612], relational expression is：
In formula, φsThe sphericity of-solid particle.
The technological requirement reacted according to chloromethanes and silica flour, the inlet temperature of chloromethanes are set as 360 DEG C, and inlet velocity is
1.25m/s, then density is 1.029kg/m3, viscosity is 2.06 × 10- 5Pa·s.Silica flour solid particle average diameter is about 2mm,
Shape is oval, sphericity 0.8, density 1200kg/m3, porosity 40%.It is high by simultaneous formula (1)~(6), material
Lmf=750mm (the material height of silicon powder particle in the reactor is 5-10 meters when static), L=20000mm, D=2200mm, take gas
Distribution grid resistance coefficient ξ is 1.5~2.5, can be calculated the value range of gas distribution grid percent opening ω for 10.23%~
15.32%.Therefore 3 kinds of percent openings (10.23%, 12.54%, 15.32%) are taken to be studied in percent opening value range,
To determine optimal percent opening.Analysis comparison is carried out with 3 kinds of percent openings 10.23%, 12.54%, 15.32%.Determine distribution grid
The number of upper vent hole 6 is respectively 22,28,34,40,46,52,58,64,70,76,82,88,94,100,106,112,118
It is a, amount to 1190, and venthole 6 is to be distributed on concentric circles of 2 center of cone as the center of circle, with 6 number of venthole by
Cumulative big, concentric diameter of a circle gradually increases, and concentric diameter of a circle is followed successively by：
1980, it is as shown in table 1 below：
The arrangement of venthole in the distribution cone of 1 embodiment of table
For the gas distribution grid of 3 kinds of different percent openings (10.23%, 12.54%, 15.32%), in whole fluid bed
The flow velocity of hot-air has carried out numerical simulation analysis, it can be deduced that, percent opening is bigger, the uniform and stable property of VELOCITY DISTRIBUTION of chloromethanes
Better.When percent opening is 10.23% and 12.54%, chloromethanes is during rising, and a large amount of chloromethanes integrated distributions are in bed
Interior central area so that near wall and central area of the chloromethanes flow velocity in bed generate obvious line of demarcation.This master
Caused by if air flow method is uneven when passing through gas distribution grid as chloromethanes, so as to silicon powder particle can be made to be difficult to uniform flow
Change, it may appear that bias current or channeling.But when percent opening is 15.84%, chloromethanes forms in whole uphill process
Full-blown turbulent flow form, reduces difference of the hot-air flow velocity in fluid bed, so as to be formed in whole space opposite
The gas velocity of stable and uniform.This is primarily due to as the increase of gas distribution grid percent opening, the circulation of methyl chloride gas strengthen,
The methyl chloride gas aggregation of regional area is reduced, and reduces the flow dead zone of methyl chloride gas.To sum up analysis is understood, 15.32%
It is the optimum opening porosity of organosilicon fluidized bed reactor gas distribution grid.
The desirable embodiment according to the utility model is enlightenment above, complete by above-mentioned description, related personnel
Various changes and amendments can be carried out in the range of without departing from this item utility model technological thought.This item utility model
Technical scope be not limited to content on specification, it is necessary to determine the technical scope according to the scope of the claims.
Claims (10)
- A kind of 1. inverted-cone distribution device in gas-fluid, it is characterised in that：Including distribution cone, through it is described distribution cone center and with The base that the distribution cone is fixed, the distribution cone is in inverted cone shape, is provided with multiple ventholes in the distribution cone, often For a venthole in up-narrow and down-wide stepped, the base is axially disposed through hole.
- A kind of 2. inverted-cone distribution device in gas-fluid according to claim 1, it is characterised in that：The cone angle of the distribution cone For 140-150 °.
- A kind of 3. inverted-cone distribution device in gas-fluid according to claim 1, it is characterised in that：Multiple ventholes are with institute The center line for stating distribution cone is distributed for the center of circle in concentric circles, with being sequentially increased for the circular diameter with one heart, the venthole Quantity increase successively.
- A kind of 4. inverted-cone distribution device in gas-fluid according to claim 3, it is characterised in that：The perforate of the distribution cone Rate is 10.23%~15.84%.
- A kind of 5. inverted-cone distribution device in gas-fluid according to claim 1, it is characterised in that：Set in each venthole It is equipped with nozzle.
- A kind of 6. inverted-cone distribution device in gas-fluid according to claim 5, it is characterised in that：Each venthole includes First through hole and the second through hole, the aperture of the first through hole are less than the aperture of second through hole, and the nozzle is in inverted T-shaped, The nozzle is axially disposed spray orifice, and the upper end of the nozzle is stretched into the first through hole, the lower end installation of the nozzle In second through hole.
- A kind of 7. inverted-cone distribution device in gas-fluid according to claim 6, it is characterised in that：Placed in second through hole There is gasket, the upper end of the nozzle is stretched into the first through hole through the gasket, and the lower end of the nozzle is pacified by plug screw In second through hole.
- A kind of 8. inverted-cone distribution device in gas-fluid according to claim 6, it is characterised in that：The spray orifice include up and down according to The vertical holes and bellmouth of secondary connection.
- A kind of 9. inverted-cone distribution device in gas-fluid according to claim 1, it is characterised in that：The top of the distribution cone Outside is fixed with bracing ring.
- A kind of 10. inverted-cone distribution device in gas-fluid according to claim 1, it is characterised in that：It is right in the distribution cone Title is provided with two lifting lugs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720657690.7U CN207324767U (en) | 2017-06-06 | 2017-06-06 | A kind of inverted-cone distribution device in gas-fluid |
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| CN201720657690.7U CN207324767U (en) | 2017-06-06 | 2017-06-06 | A kind of inverted-cone distribution device in gas-fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529733A (en) * | 2018-12-04 | 2019-03-29 | 淮阴工学院 | It is a kind of with can oscillatory type baffle plate organosilicon fluidized bed reactor |
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2017
- 2017-06-06 CN CN201720657690.7U patent/CN207324767U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529733A (en) * | 2018-12-04 | 2019-03-29 | 淮阴工学院 | It is a kind of with can oscillatory type baffle plate organosilicon fluidized bed reactor |
| CN109529733B (en) * | 2018-12-04 | 2021-07-02 | 淮阴工学院 | Organosilicon fluidized bed reactor with vibratile baffle plate |
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