CN109529732A - A kind of fluidization treatment system - Google Patents
A kind of fluidization treatment system Download PDFInfo
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- CN109529732A CN109529732A CN201811582088.7A CN201811582088A CN109529732A CN 109529732 A CN109529732 A CN 109529732A CN 201811582088 A CN201811582088 A CN 201811582088A CN 109529732 A CN109529732 A CN 109529732A
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- 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
- B01J8/26—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 with two or more fluidised beds, e.g. reactor and regeneration installations
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Abstract
The invention discloses a kind of fluidization treatment system, including main fluidized-bed and level-one pair fluidized bed, main fluidized-bed upper and lower ends are respectively arranged with main offgas duct and main reaction gas air inlet, are provided with main feedback outlet and solid particle feeding port in main fluidized-bed middle part of sliding channel；Level-one pair fluidized bed upper end is provided with level-one offgas duct, and level-one pair fluidized bed lower end is provided with first order reaction gas air inlet and level-one feed inlet, and level-one discharge port and level-one discharging blow valve port are relatively set on level-one pair fluidized bed lower sides；Main reaction gas air inlet, first order reaction gas air inlet, level-one discharging blow valve port pass through pipeline and connect with reaction gas air inlet main pipeline, main offgas duct is connect with level-one feed inlet, level-one offgas duct rear portion is provided with device for recovering tail gas, and level-one discharge port is connect with main feedback outlet.By the concatenated fluidization treatment of at least two-step fluidized bed, the fluidized state in fluidized beds at different levels is different, realizes making full use of for material, avoids the blocking of exhaust pipe.
Description
Technical field
The present invention relates to crystalline silicon preparation technical field more particularly to a kind of fluidization treatment systems.
Background technique
Improved Siemens are the mainstream technologys for producing polysilicon, and multiple key links of production will use fluidized bed
To be reacted.The reaction carried out in fluidized bed is gas-solid reaction, drives solid particle to form fluidisation by gas flow at high rates
State, gas-particle two-phase are reacted on surface.Since solid particle itself granularity initially to feed intake is different, particle is in fluid mapper process
The reasons such as fragmentation, particle surface reaction rate difference are collided, is resulted in and is whether carried out deposition reaction in fluidized bed or divide
Solution is reacted, and solid particle granularity is different in fluidized bed, and little particle can cause material waste with tail gas outlet in fluid mapper process,
Or particle easily deposits in the duct, result in blockage pipeline, influences to produce.
Summary of the invention
The present invention is intended to provide a kind of fluidization treatment system, the very good solution above problem passes through at least two-stage stream
Change the concatenated fluidization treatment of bed, the fluidized state in fluidized beds at different levels is different, realizes making full use of for material, avoids tail gas
The blocking of pipeline.
The technical scheme is that a kind of fluidization treatment system, it is characterised in that: including main fluidized-bed and level-one pair stream
Change bed, the main fluidized-bed upper and lower ends are respectively arranged with main offgas duct and main reaction gas air inlet, the main fluidized-bed middle part
Main feedback outlet and solid particle feeding port are provided on side wall；The level-one pair fluidized bed upper end is provided with level-one offgas duct, institute
It states level-one pair fluidized bed lower end and is provided with first order reaction gas air inlet and level-one feed inlet, the level-one pair fluidized bed lower sides
It is respectively arranged with level-one discharge port and the level-one being oppositely arranged with level-one discharge port discharging blow valve port；The main reaction gas air inlet
Mouth, first order reaction gas air inlet, level-one discharging blow valve port pass through pipeline and connect with reaction gas air inlet main pipeline, the main tail gas
Pipe is connect with level-one feed inlet, and level-one offgas duct rear portion is provided with device for recovering tail gas, the level-one discharge port with lead back
Material mouth connection.
Further, the solid particle feeding port is connected with threeway feed opening one end, the threeway feed opening other two
End is separately connected solid particle tank and scavenging conduit, and the scavenging conduit is connect with reaction gas air inlet main pipeline.
Further, the feeding mode of the solid particle feeding port is brought into for gas purging and feeds intake, the solid particle
The feed way of tank is that interval feeds.
Further,
The main fluidized-bed include mainstreaming cylinder and the main tail gas end socket for being mounted on mainstreaming cylinder upper and lower ends, it is main into
Sealing gland head, the main tail gas end socket, main air inlet end enclosure structure are one of hemispherical, cone or end seal cylindrical shape, described
Main offgas duct is arranged on main tail gas end socket, and the main reaction gas air inlet is arranged on main air inlet end socket, the main air inlet envelope
Main gas distribution grid is provided between head and mainstreaming cylinder, the main feedback outlet and solid particle feeding port are located at main gas point
Above fabric swatch；The level-one fluidized bed includes level-one fluidisation cylinder and the level-one tail gas for being mounted on level-one fluidisation cylinder upper and lower ends
End socket, level-one air inlet end socket, the level-one tail gas end socket, level-one air inlet end enclosure structure are hemispherical, cone or end seal cylinder
One of shape, the level-one offgas duct are arranged on level-one tail gas end socket, and the first order reaction gas air inlet is arranged in level-one
On air inlet end socket, it is provided with level-one gas distribution grid between the level-one air inlet end socket and level-one fluidisation cylinder, the level-one goes out
Material mouth and level-one discharging blow valve port are located above level-one gas distribution grid.
Further, second level pair fluidized bed is additionally provided between the level-one pair fluidized bed and device for recovering tail gas, it is described
Level-one pair fluidized bed middle part of sliding channel is provided with level-one feedback outlet, and the second level pair fluidized bed upper end is provided with second level offgas duct, institute
It states second level fluidized bed lower end and is provided with second order reaction gas air inlet and second level feed inlet, the second level pair fluidized bed lower sides are set
It is equipped with secondary discharge port and the second level being oppositely arranged with secondary discharge port discharging blow valve port, the second order reaction gas air inlet, two
Grade discharging blow valve port passes through pipeline and connect with reaction gas air inlet main pipeline, and the level-one offgas duct is connect with second level feed inlet,
The device for recovering tail gas is arranged at second level offgas duct rear portion, and the secondary discharge port is connect with level-one feedback outlet.
Further, N number of secondary fluidized bed, N >=1 are in series between the second level pair fluidized bed and device for recovering tail gas.
Further, the main fluidized-bed, level-one pair fluidized bed, be provided with heating device on second level pair fluidized bed, institute
Stating heating device is one of the heating of cylinder heat transfer, solid particle induction heating.
Further, the second level fluidized bed includes that second level fluidizes cylinder and is mounted on second level fluidisation cylinder upper and lower ends
Second level tail gas end socket, secondary inlet end socket, the second level offgas duct are arranged on second level tail gas end socket, the second order reaction gas into
Port is arranged on secondary inlet end socket, is provided with secondary gas distribution between the secondary inlet end socket and second level fluidisation cylinder
Plate, the secondary discharge port and second level discharging blow valve port are located above secondary gas distribution grid.
Further, the main fluidized-bed, level-one pair fluidized bed, second level pair fluidized bed are cylinder-shaped vertical structure.
Further, the level-one discharge port, level-one discharging blow valve port working method are intermittent take-off, the second level discharging
Mouth, second level discharging blow valve port working method are intermittent take-off.
The beneficial effects of the present invention are:
1. the present invention is realized by the adjustment of the fluidized state in the series connection of at least second level fluidized bed and different fluidized beds
The making full use of of material, avoids the deposition blocking exhaust pipe of granule materials, while reducing the difficulty of tail gas recycle separation
Degree；
2. handling simultaneously by multi-stage fluidized, the yield of product is greatly improved, reduces product screening and causes product
Pollution and screening fines pour the risk of the material pollution that system may cause；
3. present system simple process, it is easy to accomplish, the quality of product is effectively raised, production cost is reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of the invention；
Fig. 2 is the structural schematic diagram of second of embodiment of the invention；
In figure: 1. main fluidized-beds, 101. mainstreaming cylinders, 102. main tail gas end sockets, 103. main air inlet end sockets, 104. main gas
Body distribution grid, 11. main offgas ducts, 12. main reaction gas air inlets, 13. main feedback outlets, 14. solid particle feeding ports, 15. threeways
Feed opening, 16. solid particle tanks, 17. scavenging conduits, 2. level-one pair fluidized beds, 201. level-ones fluidize cylinder, 202. level-one stern seals
Head, 203. level-one air inlet end sockets, 204. level-one gas distribution grids, 21. level-one offgas ducts, 22. first order reaction gas air inlets, 23.
Level-one feed inlet, 24. level-one discharge ports, 25. level-ones discharging blow valve port, 26. level-one feedback outlets, 3. second level pair fluidized beds, 301.
Second level fluidizes cylinder, 302. second level tail gas end sockets, 303. secondary inlet end sockets, 304. secondary gas distribution grids, 31. second level tail gas
Pipe, 32. second order reaction gas air inlets, 33. second level feed inlets, 34. secondary discharge ports, 35. second levels discharging blow valve port, 36. tail gas
Recyclable device, the connection of 100. reaction gas air inlet main pipelines.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation or
Person is constructed and operated in a specific orientation, therefore it is not considered as limiting the invention.In addition, term " first ", " the
Two ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；When
Right, it can also be mechanical connection, be also possible to be electrically connected；In addition, it can also be and be connected directly, be also possible to pass through centre
Medium is indirectly connected, or can be the connection inside two elements.For the ordinary skill in the art, Ke Yigen
The concrete meaning of above-mentioned term in the present invention is understood according to concrete condition.
Embodiment one can be used for carrying out deposition reaction as shown in Figure 1: the present invention provides a kind of fluidization treatment system.
It includes main fluidized-bed 1, level-one pair fluidized bed 2, and 1 upper and lower ends of main fluidized-bed are respectively arranged with main offgas duct 11 and master is anti-
Should gas air inlet 12, be provided with main feedback outlet 13 and solid particle feeding port 14 in 1 middle part of sliding channel of main fluidized-bed；Described one
2 upper end of the secondary fluidized bed of grade is provided with level-one offgas duct 21, and 2 lower end of level-one pair fluidized bed is provided with first order reaction gas air inlet
22 and level-one feed inlet 23,2 lower sides of level-one pair fluidized bed are respectively arranged with level-one discharge port 24 and discharge with level-one
The level-ones discharging blow valve ports 25 that mouth 24 is oppositely arranged；The main reaction gas air inlet 12, first order reaction gas air inlet 22, level-one go out
Material blow valve port 25 is connect by pipeline with reaction gas air inlet main pipeline 100, and the main offgas duct 11 connects with level-one feed inlet 23
It connects, 21 rear portion of level-one offgas duct is provided with device for recovering tail gas 36, and the level-one discharge port 24 is connect with main feedback outlet 13.
Arrow direction is the flow direction of material or reaction gas in figure.
The solid particle feeding port 14 is connected with 15 one end of threeway feed opening, the other both ends of the threeway feed opening 15 point
Not Lian Jie solid particle tank 16 and scavenging conduit 17, the scavenging conduit 17 connect with reaction gas air inlet main pipeline 100.The solid
The biggish mouth of angle connect purging between solid particle feeding port 14 in the threeway feed opening 15 that grain feeding port 14 connects
Pipe 17, the lesser mouth of angle connect solid particle tank 16 between solid particle feeding port 14.Preferably, scavenging conduit 17 and solid
Particle feeding port 14 is in 180 °, and solid particle tank 16 is located at 14 top of solid particle feeding port, solid particle tank 16 and solid
Angle between grain feeding port 14 is 90 °, and material particles can be with vertical drop, and scavenging conduit 17 can lead directly to and blow material particles
Enter into main fluidized-bed 1.
The feeding mode of the solid particle feeding port 14 is brought into for gas purging and feeds intake, and the solid particle tank 16 adds
Material mode is that interval feeds.Solid particle tank 16 is according to the response situation in main fluidized-bed 1, intermittent charging, when charging, Gu
It is fallen in threeway feed opening 15 under material particles in body particle tank 16, scavenging conduit 17 in threeway feed opening 15 to blowing at this time
Gas, material particles enter in main fluidized-bed 1 under the purging of gas from solid particle feeding port 14.
The main fluidized-bed 1 includes mainstreaming cylinder 101 and the main stern seal for being mounted on 101 upper and lower ends of mainstreaming cylinder
First 102, main air inlet end socket 103, the main offgas duct 11 are arranged on main tail gas end socket 102, the main reaction gas air inlet 12
It is arranged on main air inlet end socket 103, is provided with main gas distribution grid between the main air inlet end socket 103 and mainstreaming cylinder 101
104, the main feedback outlet 13 and solid particle feeding port 14 are located at main 104 top of gas distribution grid.
The level-one fluidized bed 2 includes that level-one fluidizes cylinder 201 and is mounted on the one of level-one fluidisation 201 upper and lower ends of cylinder
Grade tail gas end socket 202, level-one air inlet end socket 203, the level-one offgas duct 21 are arranged on level-one tail gas end socket 202, and described one
Order reaction gas air inlet 22 is arranged on level-one air inlet end socket 203, and the level-one air inlet end socket 203 fluidizes cylinder 201 with level-one
Between be provided with level-one gas distribution grid 204, the level-one discharge port 24 and level-one discharging blow valve port 25 are located at level-one gas and divide
204 top of fabric swatch.
In use, this fluidization treatment system crystal seed for deposition reaction is thrown by solid particle tank 16 via solid particle
Material mouth 14 enters main fluidized-bed 1 by reactant purge gas, carries out gas-solid deposition reaction, tail gas with reaction gas in main fluidized-bed 1
Entrainment portions fine particle enters level-one pair fluidized bed 2.Tail gas carry little particle as level-one pair fluidized bed 2 crystal seed one
Carry out gas-solid deposition reaction in the secondary fluidized bed 2 of grade with reaction gas, after reactive deposition to certain particle size through by level-one discharge port 24 into
Enter crystal seed of the main fluidized-bed 1 as main fluidized-bed 1, more tiny particle enters tail gas recycle with 2 tail gas of level-one pair fluidized bed and fills
36 are set to be handled.
Embodiment two, as shown in Fig. 2, on the basis of example 1, the level-one pair fluidized bed 2 and device for recovering tail gas
Second level pair fluidized bed 3 is additionally provided between 36,2 middle part of sliding channel of level-one pair fluidized bed is provided with level-one feedback outlet 26, described
3 upper end of second level pair fluidized bed is provided with second level offgas duct 31, and 3 lower end of second level fluidized bed is provided with second order reaction gas air inlet
32 and second level feed inlet 33,3 lower sides of second level pair fluidized bed be provided with secondary discharge port 34 and with secondary discharge port 34
The second level discharging blow valve port 35 being oppositely arranged, the second order reaction gas air inlet 32, second level discharging blow valve port 35 pass through pipeline
It is connect with reaction gas air inlet main pipeline 100, the level-one offgas duct 21 is connect with second level feed inlet 33, the device for recovering tail gas
36 are arranged at 31 rear portion of second level offgas duct, and the secondary discharge port 34 is connect with level-one feedback outlet 26.
The main fluidized-bed 1, level-one pair fluidized bed 2 are provided with heating device, the heating on second level pair fluidized bed 3
Device is one of the heating of cylinder heat transfer, solid particle induction heating.Heating device is the technology of existing maturation, is added
It is hot rapid, efficiently.
The second level fluidized bed 3 includes that second level fluidizes cylinder 301 and is mounted on the two of second level fluidisation 301 upper and lower ends of cylinder
Grade tail gas end socket 302, secondary inlet end socket 303, the second level offgas duct 31 are arranged on second level tail gas end socket 302, and described two
Order reaction gas air inlet 32 is arranged on secondary inlet end socket 303, and the secondary inlet end socket 303 fluidizes cylinder 301 with second level
Between be provided with secondary gas distribution grid 304, the secondary discharge port 34 and second level discharging blow valve port 35 are positioned at secondary gas point
304 top of fabric swatch.
The mainstreaming cylinder 101 and main air inlet end socket 103, main tail gas end socket 102, the level-one fluidisation cylinder 201 with
Level-one air inlet end socket 203, level-one tail gas end socket 202, the second level fluidisation cylinder 301 and secondary inlet end socket 303, second level tail gas
The connection type of end socket 302 can be connected, be snapped connection for flange bolt, magnetic force links etc..
The main fluidized-bed 1, level-one pair fluidized bed 2, second level pair fluidized bed 3 are cylinder-shaped vertical structure.And main air inlet envelope
First 103, main tail gas end socket 102, level-one air inlet end socket 203, level-one tail gas end socket 202, secondary inlet end socket 303, second level tail gas
End socket 302 can be one or more structures in end seal cylinder, cone, hemispherical.
The level-one discharge port 24, level-one discharging 25 working method of blow valve port be intermittent take-off, the secondary discharge port 34,
Second level discharges 45 working method of blow valve port as intermittent take-off.The efficiency of discharging can be improved in intermittent take-off, energy consumption is reduced, when in it
After portion has gathered a certain number of solid particles, then discharging purging is carried out, made it into the fluidized bed of previous stage.
In use, this fluidization treatment system crystal seed for deposition reaction is thrown by solid particle tank 16 via solid particle
Material mouth 14 enters main fluidized-bed 1 by reactant purge gas, carries out gas-solid deposition reaction, tail gas with reaction gas in main fluidized-bed 1
Entrainment portions fine particle enters level-one pair fluidized bed 2.Tail gas carry little particle as level-one pair fluidized bed 2 crystal seed one
Carry out gas-solid deposition reaction in the secondary fluidized bed 2 of grade with reaction gas, after reactive deposition to certain particle size through by level-one discharge port 24 into
Enter crystal seed of the main fluidized-bed 1 as main fluidized-bed 1, more tiny particle enters second level pair with 2 tail gas of level-one pair fluidized bed and fluidizes
Bed 3.With 2 tail gas of level-one pair fluidized bed enter the fine particle of second level pair fluidized bed 3 as in second level pair fluidized bed 3 crystal seed with
Reaction gas carries out gas-solid deposition reaction, deposits to after certain partial size through entering 2 conduct of level-one pair fluidized bed by secondary discharge port 33
Crystal seed.
Embodiment three, fluidization treatment system of the invention can also be applied to decomposition reaction.Its specific structure and implementation
Example two is similar.
In use, this passes through solid particle tank 16 via solid for the fluidization treatment system solid reactant of decomposition reaction
Body particle feeding port 14 enters main fluidized-bed 1 by reactant purge gas, carries out decomposition reaction with reaction gas in main fluidized-bed 1,
Tail gas entrainment portions fine particle enters level-one pair fluidized bed 2.Solid of the little particle that tail gas carries as level-one pair fluidized bed 2
Material carries out decomposition reaction in level-one pair fluidized bed 2 with reaction gas, and more tiny particle enters with 2 tail gas of level-one pair fluidized bed
Second level pair fluidized bed 3.Enter the fine particle of second level pair fluidized bed 3 as second level pair fluidized bed 3 with 2 tail gas of level-one pair fluidized bed
Interior solid material and reaction gas carries out decomposition reaction, and final gaseous reaction product is returned by device for recovering tail gas 36
It receives.
Example IV, on the basis of embodiment one, two or three, between the second level pair fluidized bed and device for recovering tail gas
It is in series with N number of secondary fluidized bed, N >=1.Fluidization treatment system i.e. of the present invention can be according to feelings such as processing capacity, material particles sizes
The needs of condition, are extended, and multiple fluidized beds are arranged, and are not limited solely to three-level fluidized bed, second level pair fluidized bed rear
The structure of fluidized bed and the structure of connection relationship, process operation situation and level-one pair fluidized bed and second level pair fluidized bed and
Connection relationship is identical.
The present invention is realized by the adjustment of the fluidized state in the series connection of at least second level fluidized bed and different fluidized beds
Material makes full use of, and avoids the deposition blocking exhaust pipe of granule materials, while reducing the difficulty of tail gas recycle separation；
Simultaneously by multi-stage fluidized handle, greatly improve the yield of product, reduce product sieve cause product pollution and
Screening fines pours the risk for the material pollution that system may cause；Present system simple process, it is easy to accomplish, effectively mention
The high quality of product, reduces production cost.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
Various corresponding changes and modifications, but these corresponding changes and modifications can be made according to the present invention by knowing those skilled in the art
All it should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of fluidization treatment system, it is characterised in that: including main fluidized-bed and level-one pair fluidized bed, above and below the main fluidized-bed
Both ends are respectively arranged with main offgas duct and main reaction gas air inlet, be provided in the main fluidized-bed middle part of sliding channel main feedback outlet and
Solid particle feeding port；The level-one pair fluidized bed upper end is provided with level-one offgas duct, the level-one pair fluidized bed lower end setting
Have a first order reaction gas air inlet and level-one feed inlet, the level-one pair fluidized bed lower sides be respectively arranged with level-one discharge port and
The level-one discharging blow valve port being oppositely arranged with level-one discharge port；The main reaction gas air inlet, first order reaction gas air inlet, level-one
Discharging blow valve port passes through pipeline and connect with reaction gas air inlet main pipeline, and the main offgas duct is connect with level-one feed inlet, described
Level-one offgas duct rear portion is provided with device for recovering tail gas, and the level-one discharge port is connect with main feedback outlet.
2. fluidization treatment system according to claim 1, it is characterised in that: the solid particle feeding port is connected with threeway
Feed opening one end, the other both ends of threeway feed opening are separately connected solid particle tank and scavenging conduit, the scavenging conduit with react
The connection of gas air inlet main pipeline.
3. fluidization treatment system according to claim 2, it is characterised in that: the feeding mode of the solid particle feeding port
It brings into and feeds intake for gas purging, the feed way of the solid particle tank is that interval feeds.
4. fluidization treatment system according to claim 1, it is characterised in that: the main fluidized-bed include mainstreaming cylinder and
It is mounted on main tail gas end socket, the main air inlet end socket of mainstreaming cylinder upper and lower ends, the main tail gas end socket, main air inlet end enclosure structure
For one of hemispherical, cone or end seal cylindrical shape, the main offgas duct is arranged on main tail gas end socket, the main reaction
Gas air inlet is arranged on main air inlet end socket, is provided with main gas distribution grid between the main air inlet end socket and mainstreaming cylinder,
The main feedback outlet and solid particle feeding port are located above main gas distribution grid；The level-one fluidized bed includes level-one fluidisation cylinder
Body and level-one tail gas end socket, the level-one air inlet end socket for being mounted on level-one fluidisation cylinder upper and lower ends, the level-one tail gas end socket, one
Grading sealing gland header structure is one of hemispherical, cone or end seal cylindrical shape, and the level-one offgas duct is arranged in level-one tail
On sealing gland head, the first order reaction gas air inlet is arranged on level-one air inlet end socket, and the level-one air inlet end socket and level-one fluidize
Level-one gas distribution grid is provided between cylinder, the level-one discharge port and level-one discharging blow valve port are located at level-one gas distribution grid
Top.
5. fluidization treatment system according to claim 1, it is characterised in that: the level-one pair fluidized bed and tail gas recycle fill
Second level pair fluidized bed is additionally provided between setting, the level-one pair fluidized bed middle part of sliding channel is provided with level-one feedback outlet, the second level
Secondary fluidized bed upper end is provided with second level offgas duct, and second level fluidized bed lower end is provided with second order reaction gas air inlet and two grading
Material mouth, the second level that the second level pair fluidized bed lower sides are provided with secondary discharge port and are oppositely arranged with secondary discharge port discharge
Blow valve port, the second order reaction gas air inlet, second level discharging blow valve port pass through pipeline and connect with reaction gas air inlet main pipeline, institute
It states level-one offgas duct to connect with second level feed inlet, the device for recovering tail gas is arranged at second level offgas duct rear portion, and the second level goes out
Material mouth is connect with level-one feedback outlet.
6. fluidization treatment system according to claim 5, it is characterised in that: the second level pair fluidized bed and tail gas recycle fill
N number of secondary fluidized bed, N >=1 are in series between setting.
7. fluidization treatment system according to claim 5, it is characterised in that: the main fluidized-bed, level-one pair fluidized bed, two
Heating device is provided on the secondary fluidized bed of grade, the heating device is that cylinder heat transfer heats, in solid particle induction heating
One kind.
8. fluidization treatment system according to claim 5, it is characterised in that: the second level fluidized bed includes second level fluidisation cylinder
Body and second level tail gas end socket, the secondary inlet end socket for being mounted on second level fluidisation cylinder upper and lower ends, the second level offgas duct setting
On second level tail gas end socket, the second order reaction gas air inlet is arranged on secondary inlet end socket, the secondary inlet end socket with
Secondary gas distribution grid is provided between second level fluidisation cylinder, the secondary discharge port and second level discharging blow valve port are located at second level gas
Above body distribution grid.
9. fluidization treatment system according to claim 5, it is characterised in that: the main fluidized-bed, level-one pair fluidized bed, two
The secondary fluidized bed of grade is cylinder-shaped vertical structure.
10. fluidization treatment system according to claim 5, it is characterised in that: the level-one discharge port, level-one discharging purging
Mouth working method is intermittent take-off, and the secondary discharge port, second level discharging blow valve port working method are intermittent take-off.
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| （美）L.-S.范: "《气液固流态化工程》", 30 September 1993, 中国石化出版社 * |
| 潘孝良: "《硅酸盐工业机械过程及设备 上》", 31 July 1993, 武汉工业大学出版社 * |
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| CN109529732B (en) | 2020-01-10 |
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