CN109675505A - A kind of fluidized-bed reactor tedge of pantograph structure - Google Patents
A kind of fluidized-bed reactor tedge of pantograph structure Download PDFInfo
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- CN109675505A CN109675505A CN201910134861.1A CN201910134861A CN109675505A CN 109675505 A CN109675505 A CN 109675505A CN 201910134861 A CN201910134861 A CN 201910134861A CN 109675505 A CN109675505 A CN 109675505A
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- solid
- tedge
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- fluidized
- 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
- 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
Abstract
The invention discloses a kind of fluidized-bed reactor tedges of pantograph structure, it includes gas distributor, reactor rises tube cylinder, gas-solid top exit and solid bottom entrance, reactor tedge uses unconventional continuously zooming structure, rising bottom of the tube design has gas distributor, solid particle in device can move upwards under the influence of gas, through gas-solid effect after a period of time, adherent high concentrated, solid ramps up tube hub flowing up to the junction of adjacent segment under the guidance of contraction section, cut the air pocket for rising tube hub broken, then solid is constantly enriched with to wall surface in next segment, in cycles, final gas-particle two-phase is flowed out from tedge top exit.A kind of fluidized-bed reactor structure of pantograph structure proposed by the present invention is simple, without adding inner member, the near-wall air curtain of solid particle can be substantially reduced, alleviates the generation of channel and " ring core " structure, make radial distribution of the particle in reactor tedge more evenly, reaction effect is more preferable.
Description
Technical field
The present invention relates to gas solid reactor fields, specifically a kind of fluidized-bed reactor tedge of pantograph structure.
Background technique
Fluidization refers to using solid particle that under action of a fluid suspension is moved up and down in a fluid or flowed with fluid
The phenomenon that.It is fully dispersed in a fluid that this phenomenon is conducive to solid particle, so that gas-solid contact area is big, bed temperature is equal
It is even, while heat and mass is high-efficient, therefore gas-solid fluidized bed is widely used one kind reactor in chemical industry, as catalysis is split
Change reactor, circulating fluidized bed boiler etc..
Distribution of particles situation in fluidized-bed reactor tedge is worth always research, and common phenomenon is, traditional
In fluidized-bed reactor tedge, particle can all have a kind of adherent effect, i.e., closer to wall surface, the concentration of solid particle is got over
Greatly, especially under high gas velocity and low granule density, this granule density is just more obvious with the phenomenon that radial U-shaped distribution, even
Form obvious " ring core " structure.The inhomogeneities of the inhomogeneities of solid particulate distributions especially radially certainly will cause
Fluidized-bed reactor is centrally formed biggish no particle bubble area, and the Opportunity formation that part bubble is preferentially grown up is stablized
Air pocket, this air pocket both increases resistance to mass tranfer, also due to its higher rate of climb reduces the residence time, thus
Lead in reactor tedge local location overheat in the difference of each region reaction rate or even reactor, increases by-product
It generates, seriously affects product yield, inconvenience is also brought to subsequent purifying technique.
Particle is uniformly distributed being uniformly distributed and be more advantageous to raising reaction efficiency especially radially, reduces the hair of side reaction
It is raw.And it is distributed more uniformly across solid particle in a fluidized bed reactor, it is always the project for being worth research.Some grind
The person of studying carefully proposes the method for increase inner member to promote the uniformity of solid particle, if Authorization Notice No. is 103463964 B of CN
Patent propose a kind of inner member of " fin " formula, make solid particle in reactor radial distribution by the guide functions of fin
It is more uniform, to optimize flow field.Authorization Notice No. is that the patent of 100534602 C of CN proposes a kind of HORIZONTAL PLAID grating
Inner member, every layer of horizontal grate are made of multiple flow regions, and a series of guide vanes of setting, make gas-solid in each flow region
Two-phase forms "the" shape flowing, to reduce the axial backmixing of Gas and particles, make its radial distribution more evenly.So
And since tedge of the usual fluidized bed under high gas velocity operating condition is thinner, the presence of inner member makes fluidized bed tedge
Build, operation and maintenance it is all more complicated, space limitation makes the installation of complicated inner member in many cases not have realizability,
Operating cost is also higher.The present invention is directed to propose on a kind of fluidized-bed reactor without adding the pantograph structure of inner member
Riser, the reactor riser structural is simple, easy to design and install and operation.
Summary of the invention
It is an object of the invention to weaken the wall effect of particle in gas-solid fluidized bed reactor, by the water conservancy diversion of wall,
" ring core " structure common in fluidized bed is destroyed, keeps the radial distribution of solid particle in the reactor more uniform, is reduced secondary anti-
The generation answered improves productivity.
A kind of fluidized-bed reactor tedge of pantograph structure, which is characterized in that rise including gas distributor, reactor
Tube cylinder, gas-solid top exit and solid bottom entrance, reactor rise tube cylinder and use unconventional continuously zooming rotary table knot
Structure, reactor bottom design have a gas distributor, and gas-solid outlet arranged at top, and solid inlet arranged at bottom, in reactor tedge
Solid particle can move upwards under the influence of gas, and due to the presence of continuously zooming frustum cone structure, solid particle be made to exist
Radial direction in reactor tedge moves back and forth, and is more evenly distributed, and final gas-solid is flowed out from top.
Further, the reactor rises tube cylinder height and is adjusted by the rotary table of multiple fixed heights.
Further, the wall of the reactor tedge rotary table cylinder and horizontal angle are 45 ° -89 °.
Further, each rotary table cylinder of the reactor tedge presses big bottom surface, small bottom surface, big bottom surface, small from top to bottom
Bottom surface periodic arrangement.
Further, each section of the reactor tedge rotary table cylinder identical underrun welding or flange are connected.
The present invention is compared with conventional gas-solid fluidized bed reactor tedge, in the ascending motion of solid particle, rotary table
Type scaling wall can give trend of the particle to reactor tedge intermediary movements, and traditional gas-solid fluidized bed reactor tedge
Particle will be weakened in the fluidized-bed reactor tedge of pantograph structure of the invention, make in radial U-shaped distribution, the phenomenon
Particle is more uniform in the distribution of reactor radial direction, is conducive to the generation of product, reduces the generation of side reaction.Meanwhile in gas-solid
In fluidized bed, the case where aggregative fluidization phenomenon is obvious, slugging, occurs frequently, the scaler of the fluidized-bed reactor of this pantograph structure
Wall will also be hindered air flue or atmosphere puff or segmentation acts on, and reduces the generation of channel, more disperses with making two phase gas-solid distribution,
Increase two-phase contact area, reaction is promoted to carry out.Moreover, a kind of fluidized-bed reactor of pantograph structure proposed by the present invention rises
Pipe is not added with any inner member, and structure is simple, facilitates construction.
Detailed description of the invention
Fig. 1 is a kind of fluidized-bed reactor tedge for pantograph structure that wall angle with horizontal plane is 45 °.
Fig. 2 is a kind of fluidized-bed reactor tedge for pantograph structure that wall angle with horizontal plane is 60 °.
Fig. 3 is a kind of fluidized-bed reactor tedge for pantograph structure that wall angle with horizontal plane is 89 °.
Wherein, 1 wall is scaled for circular platform type, 2 be gas distributor, and 3 export for gas-solid, and 4 be solid inlet.
Specific embodiment
Embodiment one
A kind of gas-solid fluidized bed reactor tedge of pantograph structure is stacked by 300 rotary tables, and stack manner is according to outsole
Face, small bottom surface, big bottom surface, small bottom surface periodic arrangement, wherein the big basal diameter of rotary table is 0.2 m, and small basal diameter is 0.1
M uses flanged joint between each rotary table, and the angle between the circular platform type scaling wall 1 and big bottom surface of tedge is 45 °, such as Fig. 1
It is shown.A height of 0.05 m of each rotary table, a kind of total height of the gas-solid fluidized bed reactor tedge of pantograph structure are 15
m.Reaction gas is entered in fluidized-bed reactor tedge by gas distributor 2, solid by solid inlet 4, and gas velocity increases to
When minimum fluidizing velocity, solid particle will be moved upwardly together with gas, and it is single to be transported to next processing finally by gas-solid outlet 3
Member.During the motion, due to the presence of circular platform type scaling wall 1, effect of the fraction solids particle in circular platform type scaling wall 1
Under, it will be moved to the middle position of reactor tedge, granule density low situation in reactor tedge middle position is changed
It is kind, keep radial distribution more uniform, effectively prevents the formation of " annular-core structure ".Meanwhile gas-particle two-phase is moving upwards
In process, since circular platform type scaling wall 1 is to the inhibition of the air pocket of vertical ascent, air pocket is divided into stingy
Bubble, bulk gas rise by shrinking channel then by amplification channel, and gas channel is blocked, to enhance gas solid transfer effect
Rate.
Embodiment two
A kind of gas-solid fluidized bed reactor tedge of pantograph structure is stacked by 375 rotary tables, and stack manner is according to outsole
Face, small bottom surface, big bottom surface, small bottom surface periodic arrangement, wherein the big basal diameter of rotary table is 0.10 m, and small basal diameter is 0.04
M is connected with welding manner between each rotary table, and the angle between the circular platform type scaling wall 1 and big bottom surface of tedge is 60 °,
As shown in Figure 2.A height of 0.052 m of each rotary table, a kind of total height of the gas-solid fluidized bed tedge of pantograph structure are
19.50 m.Reaction gas is entered in fluidized-bed reactor tedge by gas distributor 2, solid by solid inlet 4, gas velocity
When increasing to minimum fluidizing velocity, solid particle will be moved upwardly together with gas, be transported to finally by gas-solid outlet 3 next
Processing unit.During the motion, due to the presence of circular platform type scaling wall 1, fraction solids particle scales wall 1 in circular platform type
Under the action of, it will be moved to the middle position of reactor tedge, the feelings for keeping reactor tedge middle position granule density low
Condition is improved, and radial distribution is more uniform, effectively prevents the formation of " annular-core structure ".Meanwhile gas-particle two-phase is upward
In the process of movement, since circular platform type scaling wall 1 is to the inhibition of the air pocket of vertical ascent, air pocket is divided into
Minute bubbles, bulk gas rise by shrinking channel then by amplification channel, and gas channel is blocked, to enhance gas-solid biography
Matter efficiency.
Embodiment three
A kind of gas-solid fluidized bed reactor tedge of pantograph structure is stacked by 60 rotary tables, and stack manner is according to outsole
Face, small bottom surface, big bottom surface, small bottom surface periodic arrangement, wherein the big basal diameter of rotary table is 0.05 m, and small basal diameter is 0.04
M uses flanged joint between each rotary table, and the angle between the circular platform type scaling wall 1 and big bottom surface of tedge is 89 °, such as Fig. 3
It is shown.A height of 0.286 m of each rotary table, a kind of total height of the gas-solid fluidized bed tedge of pantograph structure are 14.3 m.
Reaction gas is entered in fluidized-bed reactor tedge by gas distributor 2, solid by solid inlet 4, and gas velocity has increased to
When beginning fluidizing velocity, solid particle will be moved upwardly together with gas, and it is single to be transported to next processing finally by gas-solid outlet 3
Member.During the motion, due to the presence of circular platform type scaling wall 1, effect of the fraction solids particle in circular platform type scaling wall 1
Under, it will be moved to the middle position of reactor tedge, the situation for keeping reactor tedge middle position granule density low obtains
Improve, radial distribution is more uniform, effectively prevents the formation of " annular-core structure ".Meanwhile gas-particle two-phase is moving upwards
In process, since circular platform type scaling wall 1 is to the inhibition of the air pocket of vertical ascent, air pocket is divided into stingy
Bubble, bulk gas rise by shrinking channel then by amplification channel, and gas channel is blocked, to enhance gas solid transfer effect
Rate.
The foregoing is merely a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope of the claim.
Claims (5)
1. a kind of fluidized-bed reactor tedge of pantograph structure, which is characterized in that including gas distributor, reactor tedge
Cylinder, gas-solid top exit and solid bottom entrance, reactor rise tube cylinder and use unconventional continuously zooming frustum cone structure,
Reactor bottom design has gas distributor, and gas-solid outlet is arranged at top, and solid inlet, the solid in reactor tedge are arranged at bottom
Particle can move upwards under the influence of gas, and due to the presence of continuously zooming frustum cone structure, react solid particle
Radial direction in device tedge moves back and forth, and is more evenly distributed, and final gas-solid is flowed out from top.
2. a kind of fluidized-bed reactor tedge of pantograph structure according to claim 1, which is characterized in that the reaction
Device rises tube cylinder height and is adjusted by the rotary table of multiple fixed heights.
3. a kind of fluidized-bed reactor tedge of pantograph structure according to claim 1, which is characterized in that the reaction
The wall and horizontal angle of device tedge rotary table cylinder are 45 ° -89 °.
4. a kind of fluidized-bed reactor tedge of pantograph structure according to claim 1, which is characterized in that the reaction
Each rotary table cylinder of device tedge presses big bottom surface, small bottom surface, big bottom surface, small bottom surface periodic arrangement from top to bottom.
5. a kind of fluidized-bed reactor tedge of pantograph structure according to claim 1, which is characterized in that the reaction
Each section of the rotary table cylinder identical underrun welding of device tedge or flange are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910134861.1A CN109675505A (en) | 2019-02-24 | 2019-02-24 | A kind of fluidized-bed reactor tedge of pantograph structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910134861.1A CN109675505A (en) | 2019-02-24 | 2019-02-24 | A kind of fluidized-bed reactor tedge of pantograph structure |
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| CN109675505A true CN109675505A (en) | 2019-04-26 |
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| CN201910134861.1A Pending CN109675505A (en) | 2019-02-24 | 2019-02-24 | A kind of fluidized-bed reactor tedge of pantograph structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694841A (en) * | 2021-09-30 | 2021-11-26 | 江苏航运职业技术学院 | Gas-solid fluidized bed reactor with uniformly distributed gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093031U (en) * | 1991-06-17 | 1992-01-15 | 中国科学院化工冶金研究所 | Recirculating fluidized bed reactor with uniform flow field and free from wall effect |
| CA2095480A1 (en) * | 1993-05-04 | 1994-11-05 | Paulo Goes Koeberle | Multistage Turbulent Circulating Fluidized Bed Reactor |
| CN1820835A (en) * | 2006-01-20 | 2006-08-23 | 哈尔滨工业大学 | Conical wall-less effect reactor |
| CN101219356A (en) * | 2007-10-09 | 2008-07-16 | 褚开维 | S-type fluid bed |
| CN101270298A (en) * | 2008-01-07 | 2008-09-24 | 中国石油大学(北京) | Lift pipe reactor |
| CN204224537U (en) * | 2014-11-07 | 2015-03-25 | 洛阳瑞铭石化技术有限公司 | A kind of riser tube reaction unit promoting oil-gas transportation speed |
-
2019
- 2019-02-24 CN CN201910134861.1A patent/CN109675505A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093031U (en) * | 1991-06-17 | 1992-01-15 | 中国科学院化工冶金研究所 | Recirculating fluidized bed reactor with uniform flow field and free from wall effect |
| CA2095480A1 (en) * | 1993-05-04 | 1994-11-05 | Paulo Goes Koeberle | Multistage Turbulent Circulating Fluidized Bed Reactor |
| CN1820835A (en) * | 2006-01-20 | 2006-08-23 | 哈尔滨工业大学 | Conical wall-less effect reactor |
| CN101219356A (en) * | 2007-10-09 | 2008-07-16 | 褚开维 | S-type fluid bed |
| CN101270298A (en) * | 2008-01-07 | 2008-09-24 | 中国石油大学(北京) | Lift pipe reactor |
| CN204224537U (en) * | 2014-11-07 | 2015-03-25 | 洛阳瑞铭石化技术有限公司 | A kind of riser tube reaction unit promoting oil-gas transportation speed |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694841A (en) * | 2021-09-30 | 2021-11-26 | 江苏航运职业技术学院 | Gas-solid fluidized bed reactor with uniformly distributed gas |
| CN113694841B (en) * | 2021-09-30 | 2023-11-10 | 江苏航运职业技术学院 | Gas-solid fluidized bed reactor with uniformly distributed gas |
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Application publication date: 20190426 |