CN104338493B - Gas-liquid distributor for fluidized bed reactor - Google Patents
Gas-liquid distributor for fluidized bed reactor Download PDFInfo
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- CN104338493B CN104338493B CN201310346834.3A CN201310346834A CN104338493B CN 104338493 B CN104338493 B CN 104338493B CN 201310346834 A CN201310346834 A CN 201310346834A CN 104338493 B CN104338493 B CN 104338493B
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- central tube
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- valve seat
- liquid
- bubble cap
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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
- B01J8/20—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium
- B01J8/22—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid
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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
- B01J2208/00893—Feeding means for the reactants
- B01J2208/00911—Sparger-type feeding elements
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a kind of gas-liquid distributor for fluidized bed reactor, be mainly made up of central tube, bubble cap, float valve and valve seat；Having material outlet on the tube wall of central tube epimere end, central tube hypomere has material inlet, and bubble cap is the hood-like thing of open at one end, covers on central tube epimere end, and the cecum of bubble cap is fixing with central tube epimere end to be connected；The cirque structure of band valve seat orifice centered by valve seat, valve seat is located at the lower section of material outlet in central tube；Float valve is circular plate-like shape structure, is placed on above valve seat and can be along center pipe axle to moving up and down；Central tube stage casing is provided with a Venturi throat in the central tube of valve seat.The present invention both can ensure that gas was broken for continuous print microbubble in a liquid, can efficiently solve or alleviate again the adverse current blockage problem of the material carrying catalyst when gas-liquid pressure is unstable or gas-liquid feeds and interrupts suddenly, eliminating distributor internal flow dead band, pressure drop is less simultaneously.
Description
Technical field
The present invention relates to the inner member of reactor, particularly relate to a kind of gas-liquid for fluidized bed reactor and be distributed
Device.
Background technology
Gas-liquid-solid three-phase fluidized bed reactor is widely applied during industrial reaction, for reaction heat
The biggest course of reaction, uses three-phase fluidized bed reactor can effectively remove reaction heat, it is achieved reactor
Isothermal operation, it is ensured that reactor properly functioning.In three-phase fluidized bed reactor, gas-liquid distributor is
Ensure gas equally distributed important inner member in bed, directly affect even running and the reaction of reactor
Efficiency.
In the most domestic and international publication, ebullated bed gas-liquid distributor divides according to functional characteristic two big classes: dam
Type (such as US4874583,200910012453.5 and 201020636320.3 etc.) and non-type (example of damming
Such as 200910012498.2), existing document shows and substantially have employed U.S. Texaco on current commercial plant
The bubble cap formula gas-liquid distributor US4874583 of the band reverse stopping ball of company, middle petrochemical industry Fu Yan institute utilizes catalyst buildup
Non-section of flow-type gas-liquid distributor of the feature development at angle, is possible to prevent a large amount of adverse currents of catalyst, but cannot
Avoid the adverse current of logistics above dividing plate completely, be susceptible to air admission hole blocking.
When in fluidized bed reactor, liquid phase gas holdup is identical, bubble diameter is the least, then gas liquid film is long-pending more
Greatly, mass transfer rate is the fastest, is conducive to improving reaction effect and utilization rate.Air pocket in the liquid phase upper simultaneously
Lifting speed is higher than minute bubbles, will also result in gas shorter residence time in the reactor, or it may be said that big
Bubble makes portion gas not have and liquid phase contact mass transfer in the reactor, forms short circuit to a certain extent.This
A bit all can affect the mass transfer effect between reactant, and reduce the conversion ratio of reaction.Therefore present stage academia
How major concern gas-liquid distributor makes gas be evenly distributed, and produces more less bubble, should have simultaneously
There is adverse current in the standby logistics preventing reactor dividing plate upper belt catalyst.Gas-solid-liquid three phase materials is in reactor
The most uniformly mixing, mass-transfer efficiency and operating flexibility are the important performance indexes of fluidized bed reactor, therefore,
The gas-liquid distributor of excellent performance is the crucial inner member of fluidized bed reactor.
Patent US4874583 of Texaco company of the U.S. describes a kind of gas-liquid for fluidized bed reactor and divides
Cloth device, for bubble cap distributor, is mainly made up of parts such as bubble cap, tedge, reverse stopping ball and spools.Bubble cap
The bottom of cylinder is provided with bar seam, is provided with fluid issuing in the middle part of tedge top and spool, and spool bottom is provided with valve
Seat.The bottom of tedge is that the gas-liquid with air inlet duct (bar seam) is pre-mixed structure, is provided with use in tedge
Orifice mixer in gas-liquid mixed.Multiple bubble cap distributors are evenly arranged on distribution grid.This gas-liquid
Distributor is in use primarily present following problem: (1) although gas-liquid mixed structure energy described in Cai Yonging
Play certain gas-liquid mixed effect, but disconnected plug flow and Pulsating Flow easily occurs in gas-liquid.Further, in spool
The top in chamber is to close, and enters into above the reverse stopping ball floated, the gas-liquid of valve core cavity top dead can shape
Become swirling flow (the downward swirling flow of gas-liquid).Therefore, reverse stopping ball can in gas-liquid logistics bob, make
Become reverse stopping ball and the collsion damage of spool.(2) all there is the dead of logistics in tedge top and bubble cap annular space
District, produces more vortex in running, causes gas-liquid charging shakiness, and bed fluctuation is relatively big, the same to current political situation
Portion's resistance causes distributor pressure drop bigger.(3) gas is only sewed on end by tedge bar and is entered tedge, this
Place's gas-liquid suction mixing, easily causes pulsation to block, and flow resistance is relatively big, the internal orifice mixer of tedge
The effect of gas-liquid mixed can be strengthened to a certain extent, but resistance is relatively large.
The structure that the patent 200910012453.5 of middle petrochemical industry Fu Yan institute is introduced has been done greatly in gas-liquid mixed structure
Amount is improved, and gas-liquid mixed charging is steadily.But the oblique top of top perforate, does not has the folding of bubble cap structure simultaneously
Stream, catalyst easily deposits above dividing plate, is likely to result in fluidized bed reactor over-heat at the bottom and burns out catalysis
Agent, owing to lacking the broken of bubble cap and diffusion bubble effect, gas range of scatter is less, and bubble is relatively big, by
Do not have the baffling barrier effect of bubble cap in export distributor, time countercurrently, logistics is by moment adverse current, central feed tube
Flow velocity is relatively big, and reverse stopping ball is difficult to rapid return, needs an of short duration return process.
The patent 201020636320.3 of Firing Shenhua Coal liquefaction company application has conical bubble-cap, this circular cone bubble-cap
It is connected with this distribution plate by multiple angle square supporting legs.The feature of this structure has been made by the characteristic structure of float valve
Simply, it is easy to operation, sealing closely, when fluid flow is zero, cone completely covers the perforate of distribution plate,
Completely cut off the material on distribution plate to enter under distribution plate.The problem that this gas-liquid distributor in use exists:
(1) lacking gas-liquid mixed structure, the logistics below distribution plate enters bed when bubble cap floats, and bubble is relatively big,
Bubble wake coverage is relatively big, directly results in and fluctuates relatively greatly bottom bed, distribution inequality；(2) bubble-cap leads to
Cross angle square supporting leg to be connected with this distribution plate, can freely move up and down, exist in running simultaneously and rotate,
Rotary motion is in bubble crushing and prevents catalyst from depositing certain effect on bubble-cap, but revolves for a long time
Turning the abrasion easily causing angle square supporting leg with distribution plate perforate, reliability reduces, affects equipment long period safety
Operating, therefore bubble cap should not rotate freely.
Summary of the invention
The disconnected plug flow of easily appearance and Pulsating Flow, reverse stopping ball disturbance in order to solve prior art existence are relatively big and distribute
The technical problem of dish perforate abrasion, the invention provides a kind of gas-liquid distributor for fluidized bed reactor,
This gas-liquid distributor can strengthen gas-liquid mixed, it is achieved the continuous homogeneous state of gas-liquid feeds, and there is not stream inside distributor
Dynamic dead band, eddy flow and pressure drop are relatively small.
The present invention provide the gas-liquid distributor for fluidized bed reactor mainly by central tube, bubble cap, float valve and
Valve seat forms；Having material outlet on the tube wall of central tube epimere end, central tube hypomere has material inlet,
Bubble cap is the hood-like thing of open at one end, covers on central tube epimere end, the cecum of bubble cap and central tube epimere end
Portion is fixing to be connected；The cirque structure of band valve seat orifice centered by valve seat, valve seat is located at material outlet in central tube
Lower section；Float valve is circular plate-like shape structure, is placed on above valve seat and can be along center pipe axle to moving up and down；In
Heart pipe stage casing is provided with a Venturi throat in the central tube of valve seat.
When normally working, gas-liquid material enters central tube inner chamber and to upstream from the material inlet of central tube hypomere
Dynamic, at the Venturi throat of central tube stage casing, after suction mixing further, continue up flowing, flow through
During valve seat orifice, under material impact effect, float valve floats, in material entrance valve seat upper center tube cavity also
Enter in the circular passage that bubble cap inwall and central tube outer wall are formed from material outlet, from lower end, circular passage to
On be deflected into ebullated bed.
When float valve is in levitated position, if entering the charging of central tube inner chamber from central tube hypomere material inlet
Disconnected, the slurries in ebullated bed can enter in circular passage from the lower end adverse current of circular passage.Float valve is at gravity
Falling back to rapidly on valve seat under effect, the lower surface of float valve and valve seat upper surface form face and seal, and prevent
Or alleviation slurries continue to flow downwardly in counter current flow through valve seat orifice.Central tube inner chamber is entered from the material inlet of central tube hypomere
Gas feed flow bigger time, the levitated position of float valve is higher, otherwise the position that float valve floats is relatively low.
Using the present invention, have following beneficial effect: (1) float valve is circular plate-like shape structure, valve seat is disk
Shape structure, the two can realize face and seal, well prevent the generation of adverse current；(2) literary composition is increased in central tube
Trunnion in mound, by Venturi effect, strengthening gas-liquid charging mixing, plays swabbing action to gas simultaneously.
As further improved plan, described bubble cap is a cup-shaped tubular article, and i.e. bottom bubble cap, (bubble cap is blind
End) it is circular flat, it is rounding transition with barrel junction bottom bubble cap, on the barrel of bubble cap opening end
Have the bar seam axially penetrating through end along bubble cap.Bubble cap uses said structure, the most easy for installation, second takes
Disappeared central tube and bubble cap upper flow dead band, reduces the generation of eddy current, flows smooth and easy, and pressure drop is less, then
If then during gas-liquid feed break, countercurrently material promotes float valve to drop back into rapidly sealing station after bubble cap chamfering baffling,
Float valve lower surface and valve seat upper surface is made to realize sealing.The bar seam of bubble cap opening end can aggravate gas-liquid to be mixed
The mixing of compound, beneficially gas form minute bubbles or microbubble, make gas-liquid mixed more uniform.
As further improved plan, the material outlet of described central tube epimere end is along central tube
Axially penetrating through the line of rabbet joint of epimere end, the bottom of the line of rabbet joint is ring plain, the central tube between the two adjacent lines of rabbet joint
Remainder forms groove tooth, and groove tooth is connected as brace rod is fixing with bottom bubble cap；Valve seat is located in central tube
The root of groove tooth, the upper surface of valve seat overlaps with the ring plain bottom the line of rabbet joint.Material outlet is set to the line of rabbet joint,
Being conducive to material to discharge smoothly, flow smooth and easy, pressure drop is less.
As further walking improved plan, described float valve is made up of valve top board, banking stop and current stabilization leg, limit
Bit slice is positioned at valve top board periphery, and current stabilization leg is fixed on below valve top board, and current stabilization leg makes valve through valve seat orifice
Top board is placed on the top of valve seat, and banking stop is embedded in the material outlet line of rabbet joint and float valve can be made to move up and down along the line of rabbet joint.
Float valve is with current stabilization leg and banking stop, and current stabilization leg, below banking stop, can reduce banking stop entirety center of gravity,
Making float valve work more stable, on the one hand banking stop can ensure that float valve is upper and lower in the central tube material outlet line of rabbet joint
Mobile, circumferentially rotating of float valve can be limited simultaneously, beneficially gas-liquid charging is stable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the gas-liquid distributor for fluidized bed reactor of the present invention；
Fig. 2 is the top view of bubble cap；
Fig. 3 is the structural representation of float valve；
Fig. 4 is the A direction view of Fig. 3.
In figure, 1-bubble cap, 11-bubble cap hole, 12-bar stitches, 2-central tube, 21-groove tooth, the 22-line of rabbet joint, 23-
Circular hole, 24-bar hole, 25-Venturi throat, 3-float valve, 31-current stabilization leg, 32-banking stop, 33-valve top
Plate, 4-valve seat, 41-valve seat orifice, 5-circular passage, 6-distribution grid.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the accompanying drawings.
As it is shown in figure 1, the gas-liquid distributor for fluidized bed reactor that the present invention provides is mainly by central tube
2, bubble cap 1, float valve 3 and valve seat 4 form；Bottom bubble cap 1, (i.e. the cecum of bubble cap) is circular flat,
It is rounding transition with barrel junction bottom bubble cap, the barrel of bubble cap 1 opening end has along bubble cap 1 axle
Stitching 12 to the bar running through end, bubble cap 1 covers in central tube 2 epimere end, the inner tube wall of bubble cap 1 and center
Form circular passage 5 between the outer wall of pipe 2, bottom bubble cap 1, have bubble cap hole 11 (as shown in Figure 2)；In
Heart pipe 2 is fixed on distribution grid 6 through the installing hole on distribution grid 6 by central tube stage casing, central tube 2
The material outlet of epimere end is the line of rabbet joint 22 axially penetrating through epimere end along central tube, and the bottom of the line of rabbet joint 22 is
Ring plain, the central tube remainder between the two adjacent lines of rabbet joint 22 forms groove tooth 21, and groove tooth 21 is as propping up
Support muscle inserts in the bubble cap hole 11 bottom bubble cap 1, is fixed together bottom bubble cap；During valve seat 4 is
The cirque structure of its central band valve seat orifice 41, is located at the root of central tube inside groove tooth 21, the upper surface of valve seat 4
Overlap with the ring plain bottom the line of rabbet joint 22；Central tube 2 stage casing is venturi in the central tube of valve seat 4
Trunnion 25.
As shown in Figure 3 and Figure 4, float valve 3 is circular plate-like shape structure, by valve top board 33, banking stop 32 and steady
Stream leg 31 forms, and banking stop 32 is positioned at valve top board 33 periphery, and current stabilization leg 31 is fixed on valve top board 33
Lower section, current stabilization leg 31 makes valve top board 33 be placed on the top of valve seat 4 through valve seat orifice 41, and banking stop 32 is embedding
In the line of rabbet joint 22 of material outlet and float valve 3 can be made to move up and down along the line of rabbet joint 22.
As it is shown in figure 1, the hypomere end of central tube 2 has the bar shaped axially penetrating through hypomere end along central tube
Hole 24, the central tube tube wall between bar hole 24 and Venturi throat 25 has circular hole 23, bar hole
24, the mouth of pipe of circular hole 23 and hypomere end central tube is material inlet.
The line of rabbet joint 22 of central tube 2 epimere end generally vertical rectangle (described shape refer to the line of rabbet joint 22 with
The shape of projection on the vertical plane that the line of rabbet joint 22 faces), width is generally 5～20 millimeters, the most typically
Being 15～50 millimeters, the line of rabbet joint 22 generally arranges 2～8, is preferably provided 6, equal along central tube circumference
Even distribution.
The impact of the height of the range acceptor center pipe 2 epimere end line of rabbet joint 22 of float valve 3, makes at float valve 3
When the highest levitated position, valve top board 33 is positioned at the top of the line of rabbet joint 22 height.The diameter of valve top board 33 typically than
Central tube 2 internal diameter is little 1～5 millimeter, and valve seat orifice 41 internal diameter is typically little than central tube 2 internal diameter 10～40 millimeters；
So, when float valve 3 is in sealing station, the lower surface of valve top board 31 and the upper surface of valve seat 4,
Face can be formed seal.Float valve 3 is typically uniformly arranged 3～6 current stabilization legs 31, is provided that 3 shown in Fig. 2
Bar current stabilization leg 31.The thickness of valve top board 33 and current stabilization leg 31 is 1～5 millimeter.The width of current stabilization leg 31
Generally 2～6 millimeters, length is typically long 5～20 millimeters than the height of the central tube 2 epimere end line of rabbet joint 22.
Float valve 3 is typically uniformly arranged 2～8 banking stops 32, and the width of banking stop 32 is typically than the width of the line of rabbet joint 22
Little 1～3 millimeter, banking stop 32 just embeds in the line of rabbet joint 22, it is ensured that will not rotate in a circumferential direction when float valve floats.
The size of float valve and material one timing, can be by changing the thickness regulation float valve weight of current stabilization leg.Float valve is
Geometrically symmetric structure, thus float valve beating in the gas flow can also be alleviated.Float valve can with stamped, than
Simpler.
Reverse stopping ball described in US4874583 is sphere, the gas flow rate flowed up by the valve seat orifice on valve seat
Reverse stopping ball just can be made time higher to float, and therefore the diameter of valve seat orifice is less, reduces the circulation area of gas.
The valve top board 33 of the present invention is plane, and the gas flow rate flowed up by the valve seat orifice 41 on valve seat 4 is relatively
Float valve 3 just can be made time low to float, and therefore the diameter of valve seat orifice 41 can be relatively big, makes the circulation area of gas relatively
Greatly.
The bar seam 12 of bubble cap 1 opening end generally 6～30, arranges along bubble cap cylinder even circumferential, bar stitches
The width of 12 is typically 1～5 millimeter, preferably 1～2 millimeter.
The diameter of the Venturi throat 25 that central tube 2 stage casing is arranged is generally the 1/3～2/3 of inner diameter of centerpipe,
The length of Venturi throat 25 is generally the 1/2～2/3 of inner diameter of centerpipe.The main work of Venturi throat 25
With being to utilize Venturi effect, strengthen gas-liquid mixed effect, make gas-liquid mix further, it is to avoid charging
During disconnected plug flow and the Pulsating Flow effect of biphase gas and liquid flow occur, it is ensured that charging is steadily.On the other hand gas-liquid
Accelerate at trunnion, contribute to the gas feed at circular hole 23.
The circular hole 23 of central tube hypomere is hole obliquely, and angle of inclination e is generally 30～45 degree, tilts
Direction is to be tilted by central tube outer wall inward wall.Circular hole 23 along the circumferential direction storied placement, be traditionally arranged to be 1～
4 layers, each layer is 4～8 circular holes, and circular hole 23 diameter is generally 2～4 millimeters.Circular hole 23 is mainly used in
The charging aperture of the gas assembled below distribution grid 6.
The bar hole 24 of central tube hypomere generally 2～8, uniform along central tube circumferencial direction, preferably 4～
Article 6, bar hole width is 2～5 millimeters, and length is generally 30～60 millimeters.Bar hole 24 is mainly used in
The charging of gas.
The material of each parts of gas-liquid gas distributor of the present invention is generally metal, such as stainless steel.
The gas-liquid distributor of multiple present invention can use various conventional method, as by equilateral triangle or pros
Shape grid arrangement mode is fixed on distribution grid 6.Shown in Fig. 1, it is the stage casing of central tube 2 to be inserted into point
In installing hole on fabric swatch 6；The stage casing of central tube 2 is welded on distribution grid 6, or is fixed by snap ring
On distribution grid.
Certainly, the present invention can also have other to select: as the line of rabbet joint 22 as material outlet can also be for other
Shape, such as circular hole, square hole, delthyrium etc., now float valve 3 is just not required to banking stop, and only by valve top board
33 and current stabilization leg 31 form, the diameter of valve top board 33 only need to be more slightly smaller than central tube 2 internal diameter；Bubble cap 2
Except can be in addition to cup-shaped tubular article, it would however also be possible to employ other shapes, as generally cone or cecum are circle
The tubular article of taper, but, now, the range of float valve 3 is except the acceptor center pipe 2 epimere end line of rabbet joint
Outside the impact of the height of 22, whether also suffer from the impact of float valve structure, i.e. float valve with prominent banking stop.
The operation principle of the gas-liquid distributor of the present invention is described below in conjunction with Fig. 1.When normally working, liquid enters
Expect enter the inner chamber of central tube 2 from the central tube 2 hypomere end central tube mouth of pipe and flow up；Gas feed
A part enters central tube by bar hole 24, a part by circular hole 23, and gas is same from circular hole and bar hole
Time enter, it is ensured that gas-liquid charging is stable, it is to avoid slug flow and Pulsating Flow in fill process, resistance is less；
Liquid feedstock and gas feed at Venturi throat 25 through suction mixing after, mix, continue to
Upper flowing, when flowing through valve seat orifice 41, under airflow function, the valve top board 33 of float valve 3 floats, and gas-liquid is entered
Material enters in valve seat 4 upper center pipe 2 inner chamber, the gas-liquid charging material outlet line of rabbet joint below valve top board 33
22 enter circular passage 5.
Gas-liquid mixture stream, through the chamfering baffling of bubble cap 1, flows directly into the lower end of circular passage 5, through bubble
The bar seam 12 of cap 1 cylinder opening end is broken, form minute bubbles or microbubble backward on be deflected into ebullated bed.
Above-mentioned flowing, the solid catalyst particle being possible to prevent in ebullated bed distribution grid 6 upper surface deposit,
Form high temperature dead band, it is ensured that fluidized bed reactor safe operation.In Fig. 1, illustrate not noting the arrow of mark
The flow direction of charging.
When float valve 3 is in levitated position, if enter the charging of central tube 2 inner chamber from central tube 2 hypomere end
Interrupting, the slurries in ebullated bed can enter in circular passage 5 from the lower end adverse current of circular passage 5.Float valve 3
Sealing station (valve top board 33 contacts with valve seat 4) can be dropped back into rapidly under gravity, it is achieved face seals,
Prevent from or alleviate slurries continuing to flow downwardly in counter current flow through valve seat orifice 41.
From the bar hole 24 of central tube 2 hypomere and enter the gas feed stream of central tube 2 inner chamber with circular hole 23
When measuring bigger, the levitated position of float valve 3 is higher, otherwise the position that float valve 3 floats is relatively low.On central tube 2
The height limitation of the section end line of rabbet joint 22 the highest levitated position of float valve 3.
The anchor ring that is sealed between valve top board 33 lower surface and valve seat 4 upper surface seals.Float valve 3 is in close
During envelope position, the upper surface of valve top board 33 is normally at the line of rabbet joint 22 bottom.
The present invention combines the characteristic of the technological process of ebullated bed, gas-liquid mixed and biphase gas and liquid flow, it is provided that a kind of
Simple and reasonable, safe and reliable, the gas-liquid distributor of the three-phase fluidized bed reactor that pressure drop is less, both may be used
To ensure that gas is broken for continuous print microbubble in a liquid, it is uniformly distributed, can efficiently solve or alleviate again
The adverse current blockage problem of the material of catalyst is carried when gas-liquid pressure is unstable or gas-liquid feeds and interrupts suddenly, with
Time eliminate distributor internal flow dead band, pressure drop is less.
Claims (17)
1. for a gas-liquid distributor for fluidized bed reactor, mainly by central tube, bubble cap, float valve and valve
Seat composition；Having material outlet on the tube wall of central tube epimere end, central tube hypomere has material inlet,
Bubble cap is the hood-like thing of open at one end, covers on central tube epimere end, the cecum of bubble cap and central tube epimere end
Portion is fixing to be connected；It is characterized in that: the cirque structure of band valve seat orifice centered by valve seat, valve seat is located at center
The lower section of material outlet in pipe；Float valve is circular plate-like shape structure, be placed on above valve seat and can along center pipe axle to
Move up and down；Central tube stage casing is provided with a Venturi throat in the central tube of valve seat；Described central tube
The material outlet of epimere end is the line of rabbet joint axially penetrating through epimere end along central tube, and the bottom of the line of rabbet joint is ring-type
Plane, the central tube remainder between the two adjacent lines of rabbet joint forms groove tooth, and groove tooth is as at the bottom of brace rod and bubble cap
Portion is fixing to be connected；Valve seat is located at the root of central tube inside groove tooth, ring-type bottom the upper surface of valve seat and the line of rabbet joint
Planes overlapping.
Gas-liquid distributor the most according to claim 1, it is characterised in that: described bubble cap is a cup-shaped cylinder
Shape thing, is rounding transition with barrel junction bottom bubble cap, the barrel of bubble cap opening end has along bubble cap
Axially penetrate through the bar seam of end.
Arbitrary gas-liquid distributor the most according to claims 1 to 2, it is characterised in that: described float valve
Being made up of valve top board, banking stop and current stabilization leg, banking stop is positioned at valve top board periphery, and current stabilization leg is fixed on
Below valve top board, current stabilization leg makes valve top board be placed on the top of valve seat through valve seat orifice, and banking stop is embedded in material and goes out
The mouth line of rabbet joint can make float valve move up and down along the line of rabbet joint.
Arbitrary gas-liquid distributor the most according to claims 1 to 2, it is characterised in that: described center
The hypomere end of pipe has the bar hole axially penetrating through hypomere end along central tube.
Gas-liquid distributor the most according to claim 4, it is characterised in that: at described bar hole and literary composition
Circular hole is had on central tube tube wall between trunnion in mound.
Gas-liquid distributor the most according to claim 3, it is characterised in that: the hypomere of described central tube
End has the bar hole axially penetrating through hypomere end along central tube.
Gas-liquid distributor the most according to claim 6, it is characterised in that: at described bar hole and literary composition
Circular hole is had on central tube tube wall between trunnion in mound.
Gas-liquid distributor the most according to claim 3, it is characterised in that: the diameter of described valve top board
Less 1～5 millimeter than inner diameter of centerpipe, valve seat orifice internal diameter is less 10～40 millimeters than inner diameter of centerpipe, current stabilization leg
Length longer 5～20 millimeters than the height of the central tube epimere end line of rabbet joint.
Arbitrary gas-liquid distributor the most according to claims 1 to 2, it is characterised in that: described civilian mound
In trunnion a diameter of inner diameter of centerpipe 1/3～2/3, a length of inner diameter of centerpipe of Venturi throat
1/2～2/3.
Gas-liquid distributor the most according to claim 5, it is characterised in that: described circular hole is oblique
On hole, angle of inclination is 30～45 degree, incline direction be by central tube outer wall inward wall tilt.
11. gas-liquid distributors according to claim 7, it is characterised in that: described circular hole is oblique
On hole, angle of inclination is 30～45 degree, incline direction be by central tube outer wall inward wall tilt.
12. arbitrary gas-liquid distributors according to claims 1 to 2, it is characterised in that: the described line of rabbet joint
For vertical rectangle, quantity is 2～8, is distributed along central tube even circumferential.
13. gas-liquid distributors according to claim 2, it is characterised in that: described bar seam is 6～30
Individual, arrange along bubble cap cylinder even circumferential.
14. gas-liquid distributors according to claim 4, it is characterised in that: described bar hole be 2～
Article 8, uniform along central tube circumferencial direction.
15. gas-liquid distributors according to claim 3, it is characterised in that: described current stabilization leg be 3～
Article 6, banking stop is 4～8, is uniformly arranged, and the width of the width ratio line of rabbet joint of banking stop is little 1～3 millimeter.
16. gas-liquid distributors according to claim 10, it is characterised in that: described circular hole is circumferentially
Direction storied placement, is set to 1～4 layer, and each layer is 4～8 circular holes.
17. gas-liquid distributors according to claim 11, it is characterised in that: described circular hole is circumferentially
Direction storied placement, is set to 1～4 layer, and each layer is 4～8 circular holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310346834.3A CN104338493B (en) | 2013-08-03 | 2013-08-03 | Gas-liquid distributor for fluidized bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310346834.3A CN104338493B (en) | 2013-08-03 | 2013-08-03 | Gas-liquid distributor for fluidized bed reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104338493A CN104338493A (en) | 2015-02-11 |
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| CN106955648A (en) * | 2017-05-23 | 2017-07-18 | 上海蓝科石化环保科技股份有限公司 | Tubular reaction system for gas-solid-liquid three-phase highly exothermic reaction |
| CN107661735B (en) * | 2017-09-30 | 2019-01-18 | 北京中科诚毅科技发展有限公司 | A kind of hydrogenator feed distributor and its feeding process, design method and purposes |
| CN114130051B (en) * | 2021-12-08 | 2022-10-21 | 常州大学 | Floating valve mass transfer element |
| CN114196433B (en) * | 2021-12-29 | 2023-04-11 | 华东理工大学 | Hydrocracking reaction process and fluidized bed reactor for hydrocracking |
| CN115093880B (en) * | 2022-07-31 | 2024-03-19 | 中国石油化工股份有限公司 | Mixed bubble flow ebullated bed residual oil hydrogenation process and device |
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| US4715996A (en) * | 1986-10-31 | 1987-12-29 | Amoco Corporation | Bubble cap assembly |
| JPS63252540A (en) * | 1987-04-09 | 1988-10-19 | Res Assoc Petroleum Alternat Dev<Rapad> | Three-phase fluidized reaction apparatus |
| CN2111789U (en) * | 1992-01-25 | 1992-08-05 | 机械电子工业部兰州石油机械研究所 | Suction-breaking flow-type gas-liquid distributor |
| CN202478907U (en) * | 2012-02-03 | 2012-10-10 | 中国石油化工股份有限公司 | Gas-liquid distributing device applied to boiling bed reactor |
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