CN106492713B - Fluid distributors and fluidized bed reactors - Google Patents
Fluid distributors and fluidized bed reactors Download PDFInfo
- Publication number
- CN106492713B CN106492713B CN201610913104.0A CN201610913104A CN106492713B CN 106492713 B CN106492713 B CN 106492713B CN 201610913104 A CN201610913104 A CN 201610913104A CN 106492713 B CN106492713 B CN 106492713B
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- Prior art keywords
- branch pipe
- helical blade
- fluid distributor
- fluid
- pipe
- Prior art date
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- 239000012530 fluid Substances 0.000 title claims abstract description 76
- 238000007789 sealing Methods 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 4
- 239000000463 material Substances 0.000 abstract description 17
- 239000002245 particle Substances 0.000 abstract description 10
- 238000005243 fluidization Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
-
- 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
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
-
- 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
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/0045—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor by means of a rotary device in the flow channel
-
- 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
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/10—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles or endless belts
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00164—Controlling or regulating processes controlling the flow
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/0869—Feeding or evacuating the reactor
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a kind of fluid distributor and fluidized-bed reactors, the fluid distributor includes multiple branch pipes (1), diversion rod (2) and band-like helical blade (3) are equipped in the lumen of the branch pipe (1), the diversion rod (2) extends along the central axis of the branch pipe (1), the helical blade (3) extends around the diversion rod (2) along axial screw, and the inner side edge of the helical blade (3) is connected to the periphery wall of the diversion rod (2) and outer side edges fit in the inner wall of the branch pipe (1).Through the above technical solution, the helical blade being arranged in branch pipe forms the fluid channel extended spirally, so that needing to be constantly changing directional velocity by the material or fluid of the fluid channel and rotate, produce velocity gradient, especially the upper surface of helical blade can support and hold material, so as to avoid material particles by the helical blade and further to fluid distributor inside.
Description
Technical field
The present invention relates to fluidized reaction fields, and in particular, to a kind of fluid distributor and fluidized-bed reactor.
Background technique
Fluid distributor belongs to the basic element of character of fluidization equipment, and main function is the fluid made into fluidized bed center
It is uniformly distributed along bed section, avoids occurring the area Si Chuan in bed, while it can also be when stopping operation, material in supporting bed makes
It will not leak into pre-distributor or bellows.Whether the structure design of fluid distributor is suitable, is the key that fluidization operation success or failure.
Fluid distributor includes that supervisor and branch pipe, multiple branch pipes are stretched out from supervisor, so that the gas for being responsible for conveying passes through
Branch pipe sprays, so as to form multiple jet-stream winds (or gas-liquid mixed, gas-solid mixing stream etc.) in the reaction vessel, so that instead
Answer the reactant fluidization in container.However, branch pipe vertically extends, outlet is opened up, the solid in reaction vessel
Material is easy to fall into branch pipe, especially when the bed in reaction vessel stops operation, does not have fluid ejection, material in branch pipe
Grain can be fallen into fluid distributor by the outlet of branch pipe, caused supervisor and branch blockage, needed to pay a large amount of manpower and material resources
It is dredged, brings great inconvenience to production.
Summary of the invention
The object of the present invention is to provide the fluid distributors that one kind can prevent material particles from blocking.
To achieve the goals above, the present invention provides a kind of fluid distributor, which includes multiple branch pipes, should
Diversion rod and band-like helical blade are equipped in the lumen of branch pipe, the diversion rod extends along the central axis of the branch pipe, institute
It states helical blade and extends around the diversion rod along axial screw, the inner side edge of the helical blade is connected to the diversion rod
Periphery wall and outer side edges fit in the inner wall of the branch pipe, logical with the fluid that the axial screw formed along the diversion rod extends
Road.
Preferably, the ratio of the height of the helical blade and diameter be 1:1~1.5:1, the height of the helical blade with
The ratio between spiral spacing is 2:1~3:1.
Preferably, the helical blade is 10~15mm at a distance from the branch outlet.
Preferably, which includes supervisor, and multiple branch pipes are stretched out from the same side of the supervisor.
Preferably, the supervisor is connected with installing pipe, and the installing pipe is in alignment with each other with the lumen of branch pipe and is connected to, the peace
The outlet of tubulature has been removably installed sealing cover, and the diversion rod is inserted into the lumen of the installing pipe and is connected to the sealing
Lid.
Preferably, the sealing cover is threadedly coupled with the installing pipe.
Preferably, the ratio between the branch pipe and the internal diameter of the supervisor are 1:5~1:7.
In addition, the present invention provides a kind of fluidized-bed reactor, including reaction vessel, wherein the fluidized-bed reactor is also
Including the fluid distributor according to above scheme, the branch pipe of the fluid distributor conveys reaction into the reaction vessel
Fluid.
Preferably, the fluid distributor is located at outside the reaction vessel, and the branch pipe is connected to the reaction vessel
Bottom wall.
Preferably, the percent opening of the bottom wall of the reaction vessel is 0.75-1%.
Through the above technical solutions, the helical blade being arranged in branch pipe forms the fluid channel extended spirally, so that through
The material or fluid for crossing the fluid channel need to be constantly changing directional velocity and rotate, and produce velocity gradient, especially spiral shell
The upper surface of vane piece can support and hold material, so as to avoid material particles by the helical blade and further to
Inside fluid distributor.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of the fluid distributor of embodiment according to the present invention.
Fig. 2 is the structural schematic diagram of helical blade and diversion rod.
Description of symbols
1 branch pipe, 2 diversion rod
3 helical blades 4 supervisor
5 sealing cover, 6 installing pipe
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of fluid distributor, which includes multiple branch pipes 1, in the lumen of the branch pipe 1
Equipped with diversion rod 2 and band-like helical blade 3, the diversion rod 2 extends along the central axis of the branch pipe 1, the helical-blade
Piece 3 extends around the diversion rod 2 along axial screw, and the inner side edge of the helical blade 3 is connected to the periphery of the diversion rod 2
Wall and outer side edges fit in the inner wall of the branch pipe 1, logical with the fluid that the axial screw formed along the diversion rod 2 extends
Road.That is, the fluid channel by the outer peripheral surface of diversion rod 2, the inner wall of branch pipe 1, helical blade 3 upper surface and
Lower surface surrounds jointly.Wherein, helical blade 3 can be connected with welding with diversion rod 2, naturally it is also possible to using dismountable fitting
Mode, and the periphery wall of the edge of helical blade 3 and diversion rod 2 is dismountable connection type, the edge of helical blade 3 with
The internal perisporium of branch pipe 1 is removably gluing, sealing, can also be fixedly connected on branch pipe 1.
The fluid distributor can spray injection high-velocity fluid by branch pipe 1 into fluidized-bed reactor, to make anti-
Fluidization in container is answered, multiple branch pipes 1 can connect in the following supervisor 4 being previously mentioned, and provide by supervisor 4 to multiple branch pipes 1
Fluid.By Fig. 1 and Fig. 2 it can be appreciated that helical blade 3 spirally extends, is formed and extended around 2 axial screw of diversion rod
Fluid channel, in the fluid channel, its speed changes constantly when fluid passes through, i.e., there is velocity gradient wherein,
If the solid material particle in reaction vessel enters the fluid channel, particle will carry out screw, and speed is more constantly
It reduces, therefore, the particle with axial direction movement velocity is difficult to pass through the fluid channel, especially spiral shell from the outlet of branch pipe 1
The diameter of vane piece 3 is equal to the internal diameter of branch pipe 1, and upper surface can provide support force to the particle for entering axially into branch pipe 1, from
And material particles are held, avoid material particles by helical blade 3 further into fluid distributor inside.
Specifically, the ratio of the height of the helical blade 3 and diameter is 1:1~1.5:1, the height of the helical blade 3
It is 2:1~3:1 with the ratio between spiral spacing.Wherein, the diameter of the diameter of helical blade 3 and diversion rod 2 can determine institute jointly
State the width dimensions of fluid channel；And spiral spacing is same circumferential position, the minimum range between helical blade determines
It is formed by the height of fluid channel, when the ratio between the height of helical blade 3 and spiral spacing are 2:1, fluid can flow
It is rotated by 360 ° in body channel around diversion rod flowing, if continuing growing the height and spiral spacing ratio of rotating vane 3, fluid
Rotation angle will further increase, velocity attenuation also will increase, this by simultaneously influence export fluid speed and into
Enter the speed of the solid granulates of branch pipe, it is therefore desirable to which the ratio between reasonable design height and spiral spacing, guarantee are ejected from branch pipe 1
Gas keep higher speed, and branch pipe 1 can be blocked to avoid particle.
In addition, the helical blade 3 is 10~15mm at a distance from the branch pipe 1 outlet.The fluid that helical blade 3 is formed
The outlet in channel is roughly parallel to the tangential direction of diversion rod 2, i.e., inconsistent with the axial direction of diversion rod 2, if by spiral
The outlet port of branch pipe 1 is arranged in blade 3, and the fluid ejected from the fluid channel will be lateral from the edge that branch pipe 1 exports
Ground sprays, and helical blade 3 and branch pipe 1 keep suitable distance, and the fluid ejected from the fluid channel can be made to exist
Under the action of 1 outlet section of branch pipe change direction and it is axially injected come out.
Further, which includes supervisor 4, and multiple branch pipes 1 are stretched out from the same side of the supervisor 4.It is main
Pipe 4 can be Straight formula, or bend pipe, multiple branch pipes 1 can be formed as straight tube and stretch out from the same side of supervisor 4,
To which the directional velocity of the fluid ejected by branch pipe 1 is identical, therefore, which can be arranged in fluidized bed
The outside of reactor, multiple branch pipes 1 can connect the bottom wall in reaction vessel and into reaction vessel trandfer fluid.
In addition, the supervisor 4 is connected with installing pipe 6, the installing pipe 6 is in alignment with each other with the lumen of branch pipe 1 to be connected to, described
The outlet of installing pipe 6 has been removably installed sealing cover 5, and the diversion rod 2 is inserted into the lumen of the installing pipe 6 and is connected to institute
State sealing cover 5.As described above, helical blade 3 is detachably connected, structure of the diversion rod 2 as the fluid channel with branch pipe 1
At part, can also play a supporting role, opening sealing cover 5 can take out diversion rod 2 and helical blade from branch pipe 1, when
So, this requires the internal diameter of installing pipe 6 not less than the internal diameter of branch pipe 1.In this structure, installing pipe 6 is diversion rod 2 and helical blade
3 support construction, and exported as their disassembly, therefore according to different fluidized-bed reaction situations, can choose difference
The helical blade structure of type, such as helical-blade of the height from spacing than different helical blades and positioned at axially different position
Piece.
Specifically, the sealing cover 5 is threadedly coupled with the installing pipe 6.It certainly, can also between sealing cover 5 and installing pipe 6
To be fixed by buckle structure connection, or by clip.In the case where sealing cover 5 is threadedly coupled with installing pipe 6, sealing cover
Can be by elastic sealing gasket, particularly between 5 and the annular end face of installing pipe 6, the degree of screwing of sealing cover 5 is adjustable, i.e.,
The axial position for adjusting helical blade, under different swings, sealing cover 5 keeps the sealing with installing pipe 6 by gasket.
In addition, the ratio between the branch pipe 1 and the internal diameter of the supervisor 4 are 1:5~1:7.The internal diameter of supervisor 4 can be greater than branch pipe
1 internal diameter guarantees that the fluid of 4 supply of supervisor can be substantially more supplied in each branch pipe 1, in addition, the quantity of branch pipe 1
Also it may remain in suitable range, the sum of area of section of multiple branch pipes 1 is generally no greater than the area of section of supervisor 4, so
And in the case where introducing helical blade 3, the speed of fluid output is related to the area of section for being formed by fluid channel, because
As long as this guarantees area of section of the sum of the area of section of multiple fluid channels no more than supervisor 4.
In addition, the present invention also provides a kind of fluidized-bed reactor, including reaction vessel, wherein the fluidized-bed reactor
It further include the fluid distributor according to above scheme, the branch pipe 1 of the fluid distributor is conveyed into the reaction vessel
Reacting fluid.The branch pipe 1 of the fluid distributor and supervisor 4 are inserted into the inside of reaction vessel, naturally it is also possible to adopt
With the mounting means being located at outside reaction vessel as described below.
Further, the fluid distributor is preferably located in outside the reaction vessel, and the branch pipe 1 is connected to described
The bottom wall of reaction vessel.Fluid distributor outside the reaction vessel can be not subject to the gravity of reaction bed,
Particularly, when, there are when corrosive materials, the substantially different material contact of the structures such as branch pipe 1 and supervisor 4 can be kept away in reaction vessel
Exempt from fluid distributor described in material corrosion, on the one hand avoid the waste of material, and avoid generating non-targeted product, on the other hand
Can also be corroded damage to avoid the fluid distributor.In addition, hot environment is remained in reaction vessel in some cases,
It can also be against the influence of high temperature, to avoid sealing, dilatancy etc. positioned at external fluid distributor.
In addition, the percent opening of the bottom wall of the reaction vessel is 0.75-1%.Herein, the definition of percent opening is the company of branch pipe 1
The gross area of the venthole of bottom wall formation and the area ratio of bottom wall are passed through, percent opening can influence the fluidised form of reaction vessel interior
Change and input the amount of gas, certainly, due to increasing helical blade 3, the gas output of branch pipe 1 relatively reduces, this factor
Just pay attention to.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913104.0A CN106492713B (en) | 2016-10-20 | 2016-10-20 | Fluid distributors and fluidized bed reactors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913104.0A CN106492713B (en) | 2016-10-20 | 2016-10-20 | Fluid distributors and fluidized bed reactors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106492713A CN106492713A (en) | 2017-03-15 |
| CN106492713B true CN106492713B (en) | 2019-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610913104.0A Active CN106492713B (en) | 2016-10-20 | 2016-10-20 | Fluid distributors and fluidized bed reactors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106492713B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107537410B (en) * | 2017-09-08 | 2020-02-18 | 攀钢集团攀枝花钢铁研究院有限公司 | The flow guide structure of the multi-tubular gas distributor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104415639A (en) * | 2013-08-30 | 2015-03-18 | 刘澈 | Air purification method |
| CN204746023U (en) * | 2015-06-25 | 2015-11-11 | 长春黄金研究院 | Desorption flue gas condensation flue device |
| CN105363391A (en) * | 2015-11-12 | 2016-03-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Diversion structure for fluidized bed reactor multitubular gas distributor |
| CN205287953U (en) * | 2015-08-13 | 2016-06-08 | 北京市中电佳洁环保科技开发有限公司 | Multistage spiral -flow type water -bath deduster |
-
2016
- 2016-10-20 CN CN201610913104.0A patent/CN106492713B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104415639A (en) * | 2013-08-30 | 2015-03-18 | 刘澈 | Air purification method |
| CN204746023U (en) * | 2015-06-25 | 2015-11-11 | 长春黄金研究院 | Desorption flue gas condensation flue device |
| CN205287953U (en) * | 2015-08-13 | 2016-06-08 | 北京市中电佳洁环保科技开发有限公司 | Multistage spiral -flow type water -bath deduster |
| CN105363391A (en) * | 2015-11-12 | 2016-03-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Diversion structure for fluidized bed reactor multitubular gas distributor |
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| Publication number | Publication date |
|---|---|
| CN106492713A (en) | 2017-03-15 |
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