CN208786367U - Fluidization system for producing aluminum fluoride - Google Patents
Fluidization system for producing aluminum fluoride Download PDFInfo
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- CN208786367U CN208786367U CN201821222472.1U CN201821222472U CN208786367U CN 208786367 U CN208786367 U CN 208786367U CN 201821222472 U CN201821222472 U CN 201821222472U CN 208786367 U CN208786367 U CN 208786367U
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- dust
- reaction chamber
- tank
- cup
- extraction unit
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- 238000005243 fluidization Methods 0.000 title claims abstract description 50
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 title claims abstract description 43
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 89
- 239000000843 powder Substances 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 239000000428 dust Substances 0.000 claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 9
- 230000007704 transition Effects 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims description 41
- 239000007789 gas Substances 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 20
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 14
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 14
- 238000004064 recycling Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 238000003682 fluorination reaction Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000009835 boiling Methods 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 241000405070 Percophidae Species 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000002431 hydrogen Chemical group 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
A fluidization system for producing aluminum fluoride comprises a sealed tank body, a dust removal recovery device and a multi-point cooling device which are arranged outside the tank body, the bottom bed and the top bed are arranged in the tank body, the bottom bed comprises a bottom plate and a plurality of air hoods arranged on the bottom plate, each air hood comprises a body and a cap top, the lower end of the body is open, the cap top is arranged at the upper end opening of the body, and a powder transition device is also arranged in the upper reaction cavity. And the wind hole on the hood is the inclined hole that leans out, forms the flow direction that the slope blew off to the bottom plate, has lengthened the route that the gas flows, has increased the contact time of gas and powder, has increased the area of contact of gas and the powder on the bottom plate for the powder has sufficient time and energy and is blown up the boiling.
Description
Technical field
The utility model relates to aluminum fluoride production equipment technology more particularly to a kind of production aluminum fluoride fluidisation systems
System.
Background technique
When dry production aluminum fluoride, the boiling device in fluidized bed generallys use blast cap, but the structure of blast cap is different, deposits
In problems, such as the top of blast cap is Duckbill type, after long-time service, corrosivity hydrogen fluoride gas and its there is a level pressure
Power is washed away and is corroded to Duckbill type seam crossing at the top of blast cap, so that being easy to cracking gas leakage herein, there are also the wind of other shapes
Cap, such as it is individually for blast cap setting crown, there is also the seams of large area, also become weak section, and very appearance is fluorinated hydrogen and washes away
Corrosion is extremely cracked.
Summary of the invention
It is necessary to propose a kind of production aluminum fluoride fluidization system.
A kind of production aluminum fluoride fluidization system, tank body including sealing and the dust-removing recovery device being set to outside tank body
The top and bottom of the cylindrical tank being vertically arranged with multiple spot cooling device, the tank body, tank body are taper, in tank body
Bottom and top bed is arranged in portion, and bottom is set to the lower section of tank interior, and top bed is set to the top of tank interior, to pass through bottom
Tank interior is divided into bottom cavity, lower reaction chamber, upper reaction chamber, top chamber with top bed, hydrogen fluoride air inlet is set on the side wall of bottom cavity
Mouthful, on top, offgas outlet is arranged in the top of chamber, aluminum fluoride discharge port is arranged on the side wall of the lower reaction chamber above bottom, upper
The means of communication of setting conveying material, is delivered to lower reaction chamber for the material in upper reaction chamber between reaction chamber and lower reaction chamber
It is inside reacted, the bottom and top bed accessory have identical structure, if the bottom includes bottom plate and the dry-air blast that is set on bottom plate
Cap, bottom plate and inner tank wall fixed seal connection, open up the through-hole of several perforations, several blast caps and through-hole on the surface of bottom plate
It corresponds, blast cap is inserted into through-hole, and is seamlessly connected between blast cap and through-hole, and the blast cap includes ontology and crown, sheet
Body is hollow cylinder, the lower ending opening of ontology, and crown is set at the upper end opening of ontology, and seamless between crown and ontology
Connection, crown are that several air holes are opened up on the side wall of ontology at the top of arc, and air holes is arranged close to crown, and air holes is from introversion
The ontology of the inclined hole tilted down outside, blast cap is fixedly connected with the through-hole on bottom plate, below the lower ending opening and bottom plate of ontology
Bottom cavity connection, also inside upper reaction chamber be arranged powder transition apparatus, the powder transition apparatus include fluidisation cup, air inlet pipe,
Feed pipe, the side wall for fluidizing cup are fixedly connected with the inner tank wall above the bed of top, and fluidisation cup is hollow cylinder, fluidizes the top of cup
Portion's opening, bottom block, and through-hole are arranged in the bottom of fluidisation cup, one end of air inlet pipe is connect with the through-hole in fluidisation bottom of a cup portion, separately
One end is stretched out from tank wall, and to connecting with external air supply system, one end of feed pipe, which stretches to, to be fluidized inside cup, the other end from
Tank wall stretches out, until connecting with outside supply aluminium hydroxide powder system, dust-removing recovery device includes first be connected in series
The blast pipe of dust-extraction unit and the second dust-extraction unit, the first dust-extraction unit is connect with the offgas outlet of tank body top top of chamber, and first
Discharge pipe at the top of dust-extraction unit is connect with the second dust-extraction unit, to enter the first powder of the first dust-extraction unit of two-stage dust removal bottom
Dirt outlet is connect for exporting the dust of recycling, the blast pipe of the second dust-extraction unit with the discharge pipe at the top of the first dust-extraction unit,
Discharge pipe at the top of second dust-extraction unit sends out the hydrogen fluoride gas after dedusting, and the second dust of the second dust-extraction unit bottom goes out
Mouthful for export the dust recycled, the second dust of the first dust outlet of the first dust-extraction unit and the second dust-extraction unit bottom goes out
Mouth is connected to inside lower reaction chamber, and the powder after collecting is fed through progress circular response utilization in tank body, multiple spot cooling
Device includes returning charge auger conveyor, the first auger conveyor, the second auger conveyor, returning charge auger conveyor it is high-end with it is upper
Reaction chamber connection, low side are connected to lower reaction chamber, to form the means of communication that powder is delivered to lower reaction chamber from upper reaction chamber,
Third feed pipe also is set on the pipeline that material auger conveyor is connected to lower reaction chamber, the low side of the first auger conveyor is used for
External aluminum fluoride cold burden is inputted, high-end to be connected to lower reaction chamber inside, the low side of the second auger conveyor is for inputting outer fluorine
Change aluminium cold burden, high-end to be connected to lower reaction chamber inside, the first auger conveyor, the second auger conveyor, returning charge auger conveyor
Low side be distributed on the side wall of lower reaction chamber, it is uniform with the aluminum fluoride cold burden for being used in cooling and in the same horizontal plane
Into inside lower reaction chamber.
Preferably, the aperture height of the adjacent air holes of the blast cap is different.
Preferably, the inclined degree of the adjacent air holes of the blast cap is different.
Preferably, the opening diameter of the air holes successively decreases from inside to outside, to increase pressure when gas sprays ontology.
Preferably, the bottom of the fluidisation cup is curved bottom, and the center with curved bottom is arranged in air inlet pipe, so that
The powder of entrance is moved to curved bottom center, to be blown afloat by the gas in air inlet pipe.
Preferably, the inner wall of the side wall of one end of the feed pipe and fluidisation cup is close to setting, and the feed end of feed pipe
Port distance fluidisation rim of a cup portion height be less than fluidisation cup height 1/4.
Preferably, the oral area of cup is fluidized as inclination port, the inclined direction of oral area is to tilt down to tank body center,
Blocking surface suffered by cup is fluidized to reduce to fly out when powder is blown afloat.
Preferably, dust-removing recovery device further include send out pipeline, send out pipeline with the first dust of the first dust-extraction unit
Outlet is connected with the second dust outlet of the second dust-extraction unit bottom, and control valve is arranged on sending out pipeline, after being collected with control
Powder outlet or be sent into tank body in recycle.
Preferably, production aluminum fluoride fluidization system further includes condensate recycling device, and condensate recycling device includes that series connection connects
The first cooling tank and the second cooling tank connect, the first cooling tank top inlet are connected to tank base, the bottom of the first cooling tank
Portion's liquid outlet is connect with inlet at the top of the second cooling tank, and the second cooling pot bottom liquid outlet collects the fluorination of condensation for outlet
The first control valve is arranged in hydrogen between the first cooling tank and the second cooling tank, in the second control of the second cooling tank outlet at bottom setting
Valve processed works alternatively between first control valve and the second control valve, to realize the sealing outlet of condensation hydrogen fluoride.
In the utility model, the structure of blast cap is improved, not only with the overall structure of disposal molding, there is no welderings
Seam solves the problems, such as cracking gas leakage, and the air holes on blast cap is to be inclined outwardly inclined hole, and the gas into ontology is blown from air holes
It is directed to when out, forms the flow direction for being tilted towards bottom plate blowout, elongated the route of gas flowing, increased gas and powder
Time of contact, the contact area of the powder on gas and bottom plate is increased, so that powder has time enough and energy quilt
Blow afloat boiling.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for producing aluminum fluoride fluidization system.
Fig. 2 is the main view for producing aluminum fluoride fluidization system.
Fig. 3 is the top view for producing the tower body in aluminum fluoride fluidization system.
Fig. 4 is the partial sectional view for producing the tower body in aluminum fluoride fluidization system.
Fig. 5 is the structural schematic diagram of bottom.
Fig. 6 is the structural schematic diagram of blast cap.
Fig. 7 is the cross-sectional view of blast cap.
Fig. 8 is the cross-sectional view of the blast cap of another preferred embodiment.
Fig. 9 is the structural schematic diagram that powder transition apparatus is arranged.
In figure: production aluminum fluoride fluidization system 30, bottom 31, bottom plate 311, blast cap 312, ontology 3121, crown 3122,
Air holes 3123, top bed 32, bottom cavity 33, hydrogen fluoride air inlet 331, lower reaction chamber 34, aluminum fluoride discharge port 341, upper reaction chamber 35,
Powder transition apparatus 351, fluidisation cup 3511, air inlet pipe 3512, feed pipe 3513, top chamber 36, offgas outlet 361, first are set
Dust-extraction unit 41, the second dust-extraction unit 42, the first cooling tank 51, the second cooling tank 52, multiple spot cooling device 61, returning charge spiral transferring
Send device 611, the first auger conveyor 612, the second auger conveyor 613, third feed pipe 614.
Specific embodiment
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Referring to Fig. 1 to Fig. 9, the utility model embodiment provides a kind of production aluminum fluoride fluidization system 30, including close
The tank body of envelope and the dust-removing recovery device being set to outside tank body and multiple spot cooling device, the cylinder that the tank body is vertically arranged
Shape tank body, the top and bottom of tank body are taper, and in tank interior setting bottom 31 and top bed 32, bottom 31 is set in tank body
The lower section in portion, top bed 32 are set to the top of tank interior, with by bottom 31 and push up bed 32 by tank interior be divided into bottom cavity 33,
Lower reaction chamber 34, upper reaction chamber 35, top chamber 36, are arranged hydrogen fluoride air inlet 331, on the top of top chamber 36 on the side wall of bottom cavity 33
Offgas outlet 361 is arranged in portion, and aluminum fluoride discharge port 341 is arranged on the side wall of the lower reaction chamber 34 above bottom 31, upper anti-
The means of communication for answering setting conveying material between chamber and lower reaction chamber, the material in upper reaction chamber is delivered in lower reaction chamber
It is reacted, the bottom 31 and top bed 32 have identical structure, and the bottom 31 includes bottom plate 311 and is set to bottom plate 311
On several blast caps 312, bottom plate 311 and inner tank wall fixed seal connection open up several perforations on the surface of bottom plate 311
Through-hole, several blast caps 312 are corresponded with through-hole, and blast cap 312 is inserted into through-hole, and seamless company between blast cap 312 and through-hole
Connect, the blast cap 312 include ontology 3121 and crown 3122, ontology 3121 be hollow cylinder, the lower ending opening of ontology 3121,
Crown 3122 is set at the upper end opening of ontology 3121, and is seamlessly connected between crown 3122 and ontology 3121, crown 3122
At the top of arc, to open up several air holes 3123 on the side wall of ontology 3121, air holes 3123 is arranged close to crown 3122, air holes
3123 be the inclined hole tilted down from inside to outside, and the ontology 3121 of blast cap 312 is fixedly connected with the through-hole on bottom plate 311, ontology
3121 lower ending opening is connected to the bottom cavity 33 of 311 lower section of bottom plate, and powder transition apparatus is arranged also inside upper reaction chamber 35
351, the powder transition apparatus includes fluidisation cup 3511, air inlet pipe 3512, feed pipe 3513, fluidizes side wall and the top of cup 3511
The inner tank wall of 32 top of bed is fixedly connected, and fluidisation cup 3511 is hollow cylinder, fluidizes the top opening of cup 3511, bottom envelope
It is stifled, through-hole is set in the bottom of fluidisation cup 3511, one end of air inlet pipe 3512 is connect with the through-hole of fluidisation 3511 bottom of cup, another
End is stretched out from tank wall, until connecting with external air supply system, one end of feed pipe 3513 is stretched to inside fluidisation cup 3511, separately
One end is stretched out from tank wall, until connecting with outside supply aluminium hydroxide powder system, dust-removing recovery device includes being connected in series
The first dust-extraction unit 41 and the second dust-extraction unit 42, the tail gas of the blast pipe and tank body top top of chamber of the first dust-extraction unit 41 goes out
The discharge pipe of mouth connection, 41 top of the first dust-extraction unit is connect with the second dust-extraction unit 42, to enter the first dedusting of two-stage dust removal
First dust outlet of 41 bottom of device is used to export the dust of recycling, and the blast pipe of the second dust-extraction unit 42 and the first dedusting fill
The discharge pipe connection at 41 tops is set, the discharge pipe at 42 top of the second dust-extraction unit sends out the hydrogen fluoride gas after dedusting, and second
Second dust outlet of 42 bottom of dust-extraction unit be used for export recycling dust, the first dust outlet of the first dust-extraction unit 41 with
Second dust outlet of 42 bottom of the second dust-extraction unit is connected to inside lower reaction chamber, and the powder after collecting is fed through tank
Circular response utilization is carried out in vivo.
Multiple spot cooling device 61 includes returning charge auger conveyor 611, the first auger conveyor 612, the second auger conveyor
613, the high-end of returning charge auger conveyor 611 connect with upper reaction chamber, and low side is connected to lower reaction chamber, to be formed powder from upper
Reaction chamber is delivered to the means of communication of lower reaction chamber, and third also is arranged on the pipeline that material auger conveyor is connected to lower reaction chamber
Feed pipe 614, the low side of the first auger conveyor 612 for inputting external aluminum fluoride cold burden, it is high-end with connect inside lower reaction chamber
Logical, the low side of the second auger conveyor 613 is high-end to be connected to lower reaction chamber inside for inputting external aluminum fluoride cold burden, and first
Auger conveyor 612, the second auger conveyor 613, returning charge auger conveyor 611 low side be distributed in the side wall of lower reaction chamber
On, and in the same horizontal plane, be used in the aluminum fluoride cold burden of cooling even into lower reaction chamber inside.
Reacting in lower reaction chamber is exothermic reaction, and temperature maintains between 580-620 °, and excessively high temperature can be powder
Burn it is hardened blocking, so control the temperature in lower reaction chamber be it is critically important, the reaction in upper reaction chamber is the endothermic reaction, instead
Answer temperature control at 280-450 °, and the temperature in upper reaction chamber is provided by the temperature in lower reaction chamber.
In lower reaction chamber when the temperature is excessively high, pass through the first auger conveyor 612, the second auger conveyor 613, third
The aluminum fluoride that cold conditions is sent into the downward reaction chamber of feed pipe 614 carries out temperature control, and not only the aluminum fluoride temperature of cold conditions is lower, and
And the addition of aluminum fluoride, it pushes the chemical reaction in lower reaction chamber inversely to carry out, reduces the release of heat, realize fast cooling,
In addition, the first auger conveyor 612, the second auger conveyor 613, third feed pipe 614 are evenly arranged in inside lower reaction chamber,
Uniform balance cooling is realized, the excessively high problem of some areas temperature is avoided.
Further, the aperture height of the adjacent air holes 3123 of the blast cap 312 is different.
Further, the inclined degree of the adjacent air holes 3123 of the blast cap 312 is different.
Air holes 3123 be set as aperture height it is identical, when inclined degree is identical, the fluorination that is blown out along several air holes 3123
Hydrogen airflow direction is consistent, and the wind face covering surface of formation is along the circle wind face around ontology 3121, but within wind face
Or position in addition cannot directly be contacted with wind face, then this powder at two can not directly be blown afloat, and can only be by neighbouring
Return air is blown afloat.
So by the aperture of air holes 3123 height to set different, inclined degree also different for this programme, to increase outlet air
The coverage area in wind face is directly blown afloat so that the powder around blast cap 312 is all directly contacted with wind face.
Further, the opening diameter of the air holes 3123 successively decreases from inside to outside, with increase gas spray ontology 3121 when
Pressure.
Further, the bottom of the fluidisation cup 3511 is curved bottom, the center of air inlet pipe 3512 setting and curved bottom
Position, so that the powder entered is moved to curved bottom center, to be blown afloat by the gas in air inlet pipe 3512.Arcuate bottom
The setting in portion not only promotes powder mobile to center, and avoid bottom four corners save bit by bit or remain powder cannot be by gas
Body is blown afloat.
Further, the inner wall of the side wall of one end of the feed pipe 3513 and fluidisation cup 3511 is close to setting, and feed pipe
The height of port distance fluidisation 3511 oral area of cup of 3513 feed end is less than the 1/4 of fluidisation 3511 height of cup.
Further, the oral area for fluidizing cup 3511 is inclination port, and the inclined direction of oral area is downward to tank body center
Inclination, fluidizes blocking surface suffered by cup 3511 to reduce to fly out when powder is blown afloat.
Further, dust-removing recovery device further includes sending out pipeline, sends out first powder of the pipeline with the first dust-extraction unit 41
Dirt outlet is connected with the second dust outlet of 42 bottom of the second dust-extraction unit, and control valve is arranged on sending out pipeline, is received with controlling
It is recycled in powder outlet or feeding tank body after collection.
The main reaction of dry production aluminum fluoride is Al (OH)3 + 3HF = AlF3 + 3H2O+Q,
The reaction mainly occurred in upper reaction chamber are as follows: 2Al (OH)3 = Al2O3 + 3H2O-Q, the reaction are that heat absorption is anti-
It answers,
The reaction mainly occurred in lower reaction chamber are as follows: Al2O3 + 6HF = 2AlF3 + 3H2O+Q, the reaction are to put
Thermal response,
The above reaction is reversible reaction, so aluminium hydroxide is decomposed into aluminium oxide, alumina powder in upper reaction chamber
Reaction generates aluminium oxide to particle in reaction chamber under entrance, and also has partial oxidation aluminium powder and hydrogen fluoride gas removing by top
Dirt recyclable device absorbs, and after being recovered by filtration, partially by outlet, is partially sent into reaction in lower reaction chamber as reaction raw materials,
The recycling of material is so not only accomplished, has improved conversion ratio, and the aluminium oxide temperature being recovered by filtration is very low, has been sent into
The temperature of reaction material can be reduced in lower reaction chamber, control reaction temperature and reaction process in lower reaction chamber.
Further, production aluminum fluoride fluidization system further includes condensate recycling device, and condensate recycling device includes that series connection connects
The first cooling tank 51 and the second cooling tank 52 connect, 51 top inlet of the first cooling tank are connected to tank base, and first is cooling
The bottom liquid outlet of tank 51 is connect with 52 top inlet of the second cooling tank, and 52 bottom liquid outlet of the second cooling tank is received for outlet
The hydrogen fluoride for collecting condensation, is arranged the first control valve between the first cooling tank 51 and the second cooling tank 52, in the second cooling tank 52
The second control valve is arranged in outlet at bottom, works alternatively between the first control valve and the second control valve, to realize condensation hydrogen fluoride
Seal outlet.
Module or unit in the utility model embodiment device can be merged according to actual needs, divide and be deleted
Subtract.
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to this reality
The equivalent variations made by novel claim, still falls within the scope of the utility model.
Claims (9)
1. a kind of production aluminum fluoride fluidization system, it is characterised in that: tank body including sealing and be set to removing outside tank body
Dirt recyclable device and multiple spot cooling device, the cylindrical tank that the tank body is vertically arranged, the top and bottom of tank body are cone
Shape, in tank interior setting bottom and top bed, bottom is set to the lower section of tank interior, and top bed is set to the upper of tank interior
Side is set on the side wall of bottom cavity so that tank interior is divided into bottom cavity, lower reaction chamber, upper reaction chamber, top chamber by bottom and top bed
Hydrogen fluoride air inlet is set, offgas outlet is arranged in the top of chamber on top, and fluorination is arranged on the side wall of the lower reaction chamber above bottom
Aluminium discharge port, the means of communication of setting conveying material between upper reaction chamber and lower reaction chamber, by the material in upper reaction chamber
It is delivered in lower reaction chamber and is reacted, the bottom and top bed accessory have identical structure, and the bottom includes bottom plate and is set to
Several blast caps on bottom plate, bottom plate and inner tank wall fixed seal connection, open up the through-hole of several perforations on the surface of bottom plate,
Several blast caps and through-hole correspond, and blast cap is inserted into through-hole, and is seamlessly connected between blast cap and through-hole, and the blast cap includes
Ontology and crown, ontology are hollow cylinder, and the lower ending opening of ontology, crown is set at the upper end opening of ontology, and crown
It is seamlessly connected between ontology, crown is several air holes to be opened up on the side wall of ontology, air holes is set close to crown at the top of arc
It sets, air holes is the inclined hole tilted down from inside to outside, and the ontology of blast cap is fixedly connected with the through-hole on bottom plate, and the lower end of ontology is opened
Mouth is connected to the bottom cavity below bottom plate, and powder transition apparatus is arranged also inside upper reaction chamber, and the powder transition apparatus includes
Cup, air inlet pipe, feed pipe are fluidized, the side wall for fluidizing cup is fixedly connected with the inner tank wall above the bed of top, and fluidisation cup is open circles
Cylinder fluidizes the top opening of cup, and bottom blocks, and through-hole, one end of air inlet pipe and fluidisation bottom of a cup is arranged in the bottom of fluidisation cup
The through-hole in portion connects, and the other end is stretched out from tank wall, until connecting with external air supply system, one end of feed pipe stretches to fluidisation
Cup is internal, and the other end is stretched out from tank wall, until connecting with outside supply aluminium hydroxide powder system, dust-removing recovery device includes
The first dust-extraction unit and the second dust-extraction unit being connected in series, the blast pipe of the first dust-extraction unit and the tail gas of tank body top top of chamber
Outlet connects, and the discharge pipe at the top of the first dust-extraction unit is connect with the second dust-extraction unit, is filled with entering the first dedusting of two-stage dust removal
First dust outlet in bottom set portion is used to export the dust of recycling, the blast pipe of the second dust-extraction unit and the first dust-extraction unit top
Discharge pipe connection, the discharge pipe at the top of the second dust-extraction unit sends out the hydrogen fluoride gas after dedusting, the second dust-extraction unit bottom
Second dust outlet in portion is used to export the dust of recycling, the first dust outlet of the first dust-extraction unit and the second dust-extraction unit bottom
Second dust outlet in portion is connected to inside lower reaction chamber, and the powder after collecting is fed through in tank body and carries out circular response
It utilizes, multiple spot cooling device includes returning charge auger conveyor, the first auger conveyor, the second auger conveyor, returning charge spiral transferring
Send the high-end of device to connect with upper reaction chamber, low side is connected to lower reaction chamber, with formed powder be delivered to from upper reaction chamber it is lower anti-
The means of communication of chamber is answered, third feed pipe, the first spiral also are set on the pipeline that material auger conveyor is connected to lower reaction chamber
The low side of conveyer is high-end to be connected to lower reaction chamber inside for inputting external aluminum fluoride cold burden, the second auger conveyor it is low
End is high-end to be connected to lower reaction chamber inside for inputting external aluminum fluoride cold burden, the first auger conveyor, the second helical feed
Device, returning charge auger conveyor low side be distributed on the side wall of lower reaction chamber, and in the same horizontal plane, to be used in cooling
Aluminum fluoride cold burden even into lower reaction chamber inside.
2. production aluminum fluoride fluidization system as described in claim 1, it is characterised in that: the adjacent air holes of the blast cap is opened
Hole height is different.
3. production aluminum fluoride fluidization system as described in claim 1, it is characterised in that: the adjacent air holes of the blast cap is inclined
Oblique degree is different.
4. production aluminum fluoride fluidization system as described in claim 1, it is characterised in that: the opening diameter of the air holes is from interior
Successively decrease outward, to increase pressure when gas sprays ontology.
5. production aluminum fluoride fluidization system as described in claim 1, it is characterised in that: the bottom of the fluidisation cup is arc
Bottom, the center of air inlet pipe setting and curved bottom, so that the powder entered is moved to curved bottom center, with
It is blown afloat by the gas in air inlet pipe.
6. production aluminum fluoride fluidization system as described in claim 1, it is characterised in that: one end of the feed pipe and fluidisation
The inner wall of the side wall of cup is close to setting, and the height in the port distance fluidisation rim of a cup portion of the feed end of feed pipe is high less than fluidisation cup
The 1/4 of degree.
7. production aluminum fluoride fluidization system as described in claim 1, it is characterised in that: the oral area for fluidizing cup is beveled end
Mouthful, the inclined direction of oral area is to tilt down to tank body center, is fluidized suffered by cup with reducing to fly out when powder is blown afloat
Blocking surface.
8. production aluminum fluoride fluidization system as described in claim 1, it is characterised in that: dust-removing recovery device further includes sending out
Pipeline is sent out pipeline and is connected with the first dust outlet of the first dust-extraction unit and the second dust outlet of the second dust-extraction unit bottom
It connects, control valve is set on sending out pipeline, recycled with controlling the powder outlet after collecting or being sent into tank body.
9. production aluminum fluoride fluidization system as described in claim 1, it is characterised in that: production aluminum fluoride fluidisation system
System further includes condensate recycling device, and condensate recycling device includes the first cooling tank and the second cooling tank being connected in series, and first is cold
But tank top inlet is connected to tank base, and inlet connects at the top of the bottom liquid outlet of the first cooling tank and the second cooling tank
It connects, the second cooling pot bottom liquid outlet collects the hydrogen fluoride of condensation for outlet, between the first cooling tank and the second cooling tank
First control valve is set, the second control valve is set in the second cooling tank outlet at bottom, between the first control valve and the second control valve
It works alternatively, to realize the sealing outlet of condensation hydrogen fluoride.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821222472.1U CN208786367U (en) | 2018-07-31 | 2018-07-31 | Fluidization system for producing aluminum fluoride |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821222472.1U CN208786367U (en) | 2018-07-31 | 2018-07-31 | Fluidization system for producing aluminum fluoride |
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| CN208786367U true CN208786367U (en) | 2019-04-26 |
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