CN109210870A - A kind of back-shaped inert particles fluidized bed drying equipment and its drying means - Google Patents
A kind of back-shaped inert particles fluidized bed drying equipment and its drying means Download PDFInfo
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- CN109210870A CN109210870A CN201811037913.5A CN201811037913A CN109210870A CN 109210870 A CN109210870 A CN 109210870A CN 201811037913 A CN201811037913 A CN 201811037913A CN 109210870 A CN109210870 A CN 109210870A
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- 238000001035 drying Methods 0.000 title claims abstract description 130
- 239000002245 particle Substances 0.000 title claims abstract description 118
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000005192 partition Methods 0.000 claims abstract description 25
- 238000009826 distribution Methods 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 2
- 238000005243 fluidization Methods 0.000 claims description 2
- 239000006071 cream Substances 0.000 abstract description 2
- 235000011837 pasties Nutrition 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The present invention provides a kind of back-shaped inert particles fluidized bed drying equipment and its drying means, the equipment includes drying box, feeding device, heater, air blower, inert particle conveying device, gas-solid separating device and gas distribution grid, and drying box is divided into several hothouses by setting partition on gas distribution grid；Wet stock drying means is by one or more groups of heaters and air blower, the gas of identical or different temperature is passed through into drying box respectively, feeding device is passed through wet stock into the first hothouse, the inert particle for being stained with wet stock successively flows into next hothouse under material position difference motive force, process that completion is dried and product falls off, inert particle in final drying compartment is delivered in the first hothouse by inert particle conveying device, to form circulation of the inert particle in drying box.Equipment of the invention can optimize the drying process of cream paste, pasty material, improve entire drying process reliability of operation.
Description
Technical field
The invention belongs to drying equipment technical fields, and in particular to a kind of back-shaped inert particles fluidized bed drying equipment and its
Drying means.
Background technique
Inert particle fluidized drying is that certain a certain amount of inert particle is added in drier, and material is transported to bed
It is interior and be uniformly attached on inert particle surface, it follows particle to fluidize together, carries out part caloic by contacting with thermal current phase border
Transmitting, while the heat of inside particles storage is also passed to material, completes part Mass and heat transfer process, reaches material dehumidifying mesh
's.After material is dry in bed, material film is become to play brittleness by elastoplasticity, and under the collision of particle from particle surface in the form of sheets
Or powdery falls off, and leaves fluidized bed with air-flow.
In the drying process, the sticking, dry of material, the three phases that fall off are same to current inert particles fluidized bed
What position carried out, inert particle surface dry material sticks wet stock again after falling off or when dry material is not completely fallen off just has sticked
Attached wet stock, when wet stock inlet amount is larger or wet stock is sticky larger, inert particle easily assembles agglomerating, generation with wet stock
Dead bed phenomenon.
Chinese patent CN2849609Y proposes a kind of Inert Particle Fluidized-bed Dryer, including air filter, send
Blower, radiator, heater, screw pump, feeder, fluidizer, cyclone separator, material storage barrel, bag filter and air inducing
Machine, the device are suitable for the drying of the materials such as cream paste, pulpous state and liquid, but the problem is that in drying box material it is glutinous
Attached, dry, removing three phases can influence each other, when wet stock inlet amount is larger or material is sticky larger, it may occur that dead bed
Phenomenon, and the heat-transfer effect between inert particle and wet stock is bad.
Summary of the invention
For above-mentioned technical problem of the existing technology, the purpose of the present invention is to provide a kind of back-shaped inert particle streams
Change bed drying equipment and its drying means, device and method through the invention, material sticks, dries, taking off in drying process
Except three phases carry out at the different location of hothouse respectively, interfering with each other for three phases is effectively prevented, is improved wet
The drying efficiency of material.
A kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that defeated including drying box, inert particle
Send device, feeding device, at the top of drying box by exhaust outlet successively with gas-solid separating device, air-introduced machine piping connection, drying box
Bottom connects air blower by heater line, and gas distribution grid is equipped with inside drying box, is vertically installed on gas distribution grid
Drying box is divided into several hothouses, fills inert particle in each hothouse by several partitions, partition；First hothouse side
Portion's feed inlet and feeding device piping connection, each indoor inert particle of drying is under the action of material position difference successively to adjacent
Next dry indoor moveable；Final drying compartment is equipped with inert particle conveying device, for by the inertia grain in final drying compartment
Son is conveyed into the first hothouse, to form inert particle in the indoor circulation of drying.
A kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that it further include dehumidifier, the air inducing
The escape pipe of machine passes through the air inlet pipe piping connection of dehumidifier and air blower, so that passing through dehumidifier by the gas that air-introduced machine is drawn
Enter air blower after being dehumidified, with the heat in secondary use tail gas.
A kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that one piece is provided on gas distribution grid
Longitudinal baffle and several lateral partitions, the longitudinal baffle to two dry sections are divided into, distinguish drying box on two dry sections
The feeding device and inert particle conveying device are set；Several lateral partitions are connect with longitudinal baffle square crossing, by two
Dry section is divided into several hothouses respectively.
A kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that heater include primary heater and
Secondary heater, air blower include the first air blower and the second air blower；Two dry section bottoms are respectively equipped with inlet plenum, are equipped with
The inlet plenum of the dry section bottom of feeding device is equipped with inert particle and is conveyed by the first air blower of primary heater piping connection
The inlet plenum of the dry section bottom of device passes through the second air blower of secondary heater piping connection.
A kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that from the first air blower to equipped with charging
The gas temperature being passed through in the dry section of device is 90 ~ 200 DEG C, preferably 120~130 DEG C；It is lazy from the second air blower to being equipped with
Property particle conveying device dry section in the gas temperature that is passed through be less than or equal to the gas temperature that the first air blower is sent into.
A kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that one end of longitudinal baffle and drying box
Between inner wall be equipped with gap, formed between two dry sections for inert particle circulation channel, the longitudinal baffle it is another
One end is fixedly connected with dry chamber interior wall.
A kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that the height at the top of longitudinal baffle is greater than
Height at the top of lateral partitions, in case the inert particle of longitudinal baffle two sides is mutually mixed without circulating lower；Lateral partitions
The connection of the inner wall of both ends and drying box, is equipped with gap between bottom end and gas distribution grid.
A kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that feeding device be feed screw or
Liquid dispersion device, the liquid dispersion device include pump and distributor；Gas-solid separating device is cyclone separator or cloth bag
Deduster；Inert particle conveying device is feed screw.
The drying means of the wet stock of the back-shaped inert particles fluidized bed drying equipment, it is characterised in that by the first drum
The gas of blower input is passed through the air inlet of the dry section bottom equipped with feeding device after primary heater is preheated to 90 ~ 200 DEG C
It is indoor；By the gas of the second air blower input after secondary heater is preheated to 20 ~ 200 DEG C, it is passed through and is conveyed equipped with inert particle
In the inlet plenum of the dry section bottom of device；The gas being passed through make the indoor inert particle of each drying in fluidisation state after, by into
Material device is passed through wet stock into the first hothouse, and the inert particle for being stained with wet stock successively flows under material position difference motive force
Adjacent next hothouse, finally flows into final drying compartment, and inert particle conveying device is by the inertia grain in final drying compartment
Son is delivered in the first hothouse, to form inert particle in the indoor circulation of drying；Wet stock is successively adhered to, is done
It is dry, fall off process, the material after falling off through being passed through gas entrainment, pass through exhaust outlet flow into gas-solid separating device, carry out material
The continuous drying recycling of wet stock is completed in recycling；Entire drying system is open system or closed system, and open system is served as reasons
The wind that air-introduced machine is drawn is directly discharged in environment, and what air blower blasted is the gas in environment；Closed system is by air-introduced machine
The gas of extraction enters air blower after being dehumidified by dehumidifier, so that the heat in tail gas can be with secondary use, enclosed system
The escape pipe of the dehumidifier of system is divided into two-way, two-way escape pipe respectively with the first air blower and the second air blower piping connection.
Compared with the existing technology, the beneficial effect that the present invention obtains is:
(1) present invention is back-shaped inert particle channel will to be designed to inside inert particle drier, overcomes existing inertia grain
The shortcomings that material is easy to be bonded together in sub- fluidized bed drying process, and dead bed phenomenon occurs；In drying process, inert particle exists
Circumferentially circulation in hothouse, the sticking, dry of material, remove three phases respectively at the different location of hothouse into
Row, effectively prevents interfering with each other for three phases, improves the drying efficiency of wet stock；It by means of the present invention, can be excellent
The drying process of dampness elimination material reduces production cost；
(2) device structure of the invention is simple, and occupied area is small, is suitable for industry's enlarging production.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of open system of the present invention；
The cross sectional plan view of Fig. 2 the embodiment of the present invention；
Fig. 3 is present device left view；
Fig. 4 is the schematic diagram of the section structure of closed system of the present invention；
In figure, 1- drying box, the channel 100-, 2- longitudinal baffle, 3- lateral partitions, 4- gas distribution grid, 5- inlet plenum, 6- heating
Device, 601- primary heater, 602- secondary heater, 7- air blower, the first air blower of 701-, the second air blower of 702-, 8- are lazy
Property particle conveying device, 9- feeding device, 10- exhaust outlet, 11- gas-solid separating device, 12- air-introduced machine, 13- dehumidifier, A-
One hothouse, the secondary drying chamber C-, B- final drying compartment.
Specific embodiment
The present invention is further explained in the light of specific embodiments, but the scope of protection of the present invention is not limited thereto.
Embodiment:
A kind of back-shaped inert particles fluidized bed drying equipment, including drying box 1, top by the exhaust outlet 10 that is equipped with successively with
12 piping connection of gas-solid separating device 11 and air-introduced machine, is equipped with gas distribution grid 4 inside drying box 1,1 bottom of drying box by plus
Drying box 1 is divided into several dryings by hot 6 piping connection air blower 7 of device, several partitions being vertically installed on gas distribution grid 4
Inert particle is filled in each hothouse in room.First hothouse A side feed inlet and 9 piping connection of feeding device, finally do
Dry room B is equipped with inert particle conveying device 8, for the inert particle in final drying compartment B is defeated into the first hothouse A
It send, to form inert particle in the indoor circulation of drying.
Above-mentioned feeding device 9 can be feed screw or liquid dispersion device, the liquid dispersion device include pump and
Distributor；Gas-solid separating device 11 can be cyclone separator or bag filter；Inert particle conveying device 8 can be spiral shell
Revolve charger.
The above-mentioned partition being vertically installed on gas distribution grid 4, can be one piece of longitudinal baffle 2 and several lateral partitions 3,
Drying box 1 is divided into several hothouses.
The longitudinal baffle 2 is vertically installed on gas distribution grid 4, and by drying box 1 to two dry sections are divided into, two dry
The feeding device 9 and inert particle conveying device 8(i.e. feeding device 9 and inert particle conveying device 8 are respectively set in dry area
It is respectively arranged on the two sides of longitudinal baffle 2)；Several lateral partitions 3 are connect with 2 square crossing of longitudinal baffle, by two dry differentiations
Not being divided into several hothouses, (in the present embodiment, hothouse forms an end to end form, lazy in the first hothouse A
Property particle is successively flowed into next hothouse, is finally flowed into final drying compartment B, inert particle conveying device 8 again will be last
Inert particle in hothouse B is delivered in the first hothouse A, i.e., as in Fig. 2, inert particle is right-hand circular flowing).
Heater 6 includes primary heater 601 and secondary heater 602, and air blower 7 includes the first air blower 701 and the
Two air blowers 702；Two dry section bottoms are respectively equipped with inlet plenum 5, the inlet plenum 5 of the dry section bottom equipped with feeding device 9
By 601 the first air blower of piping connection 701 of primary heater, intake air temperature is 90 ~ 200 DEG C, preferably 120~130 DEG C；If
There is the inlet plenum 5 of the dry section bottom of inert particle conveying device 8 to pass through 602 the second air blower of piping connection of secondary heater
702, intake air temperature is less than or equal to the gas temperature that the first air blower 701 is sent into.
It can thus be seen that the purpose that drying box 1 separates is by longitudinal baffle 2: being stained with the inert particle of wet stock
It is successively mobile to adjacent next hothouse from the first hothouse A or secondary drying chamber C, the wet object newly entered can be effectively prevented
Material is attached on the surface of material not being completely dried also, and causes uneven drying or dead bed phenomenon, and can also enhance heat transfer；
When being dried in drying box, material is become to play brittleness by elastoplasticity, since inert particle is irregularly transported under fluidized state
It is dynamic, it collides between particle and particle, particle and wall, so that the dry material on inert particle surface is in the form of sheets or powdery falls off
It is carried secretly afterwards by gas, gas-solid separating device 11 is flowed by exhaust outlet 10, carries out material recycle.
Above-mentioned lateral partitions 3 are connect with 2 square crossing of longitudinal baffle, and drying box 1 is divided into several hothouses, Ruo Gangan
Dry room forms an end to end form in drying box 1.In wet stock drying process, wet stock flows into the first hothouse
In A (wet stock can also be also passed into the secondary drying chamber C adjacent with the first hothouse A, be also provided on secondary drying chamber C into
Expect device 9), the inert particle for being stained with wet stock successively flows into adjacent next hothouse under material position difference motive force, finally
It flows into final drying compartment B, the inert particle in final drying compartment B is delivered to the first hothouse A by inert particle conveying device 8
It is interior, route is circulated with form inert particle.
The height at above-mentioned 2 top of longitudinal baffle is greater than the height at 3 top of lateral partitions, in case 2 two sides of longitudinal baffle is lazy
Property particle be mutually mixed without circulating lower, to cause that circulating for inert particle cannot be formed；In Fig. 2, it is stained with wet
The inert particle of material, along longitudinal baffle 2, successively flows into adjacent next hothouse under material position difference motive force.
In above-mentioned inert particle flow process, the channel 100 for being equipped with circulation inert particle is needed between two dry sections, can be pressed
Following manner: gap, institute are equipped between one end of longitudinal baffle 2 and the connection of 1 inner wall of drying box, 1 inner wall of the other end and drying box
If gap is the channel 100 between two dry sections, i.e., as in Fig. 2, inert particle is in the dry section for being equipped with feeding device 9
It flows to the right along longitudinal baffle 2, turns back in the dry section for entering and being equipped with inert particle conveying device 8 through channel 100, inertia grain
Son flows to the left further along longitudinal baffle 2, formed an end to end inert particle circulate route (i.e. as in Fig. 2, the
One hothouse A and final drying compartment B connect, and convey the inert particle in final drying compartment B conducive to inert particle conveying device 8
Enter in the first hothouse A, form circulating for inert particle).
Above-mentioned entire drying system is open system or closed system, and open system is direct for the wind drawn by air-introduced machine 12
It is discharged into environment, what air blower 7 blasted is the gas in environment；Closed system is the gas drawn by air-introduced machine 12 by removing
Wet device 13 enters air blower 7 after being dehumidified so that heat in tail gas can with secondary use, the dehumidifier 13 of closed system
Escape pipe is divided into two-way, two-way escape pipe respectively with 702 piping connection of the first air blower 701 and the second air blower.
The drying means of the wet stock of the present embodiment are as follows:
A length of 0.4 m of drying box 1 that uses, concentrated phase area width for 0.2 m, expanding reach width are 0.44 m, total height is 1 m, dry
Gas distribution grid 4 is set in case 1, the longitudinal baffle 2 of one piece of a height of 0.32m, a length of 0.35m are vertically arranged on gas distribution grid 4,
Longitudinal baffle 2 by drying box 1 to point；
2 one end of longitudinal baffle is connect with 1 inner wall of drying box, the other end is equipped with the gap apart from 1 inner wall 0.05m of drying box, described
Gap is channel 100；
The lateral partitions 3 of three pieces of a height of 0.24 m of setting in drier 1, wherein lateral partitions 3 are 0.02 apart from gas distribution grid 4
M, lateral partitions 3 are connect with 2 square crossing of longitudinal baffle, and 3 both ends of lateral partitions are fixedly connected with 1 inner wall of drier；It is longitudinal every
Plate 2 and lateral partitions 3 are divided into drying box 1 hothouse that the big length and width such as 8 are all 0.1 m.
Gas distribution grid 4, which is equipped with, opens sieve pore, and percent opening 14%, the aperture in each hole is 1.5 mm, each hothouse
Inside uniformly spread quiet 80 mm Ceramic Balls inert particle of the height of bed.
It is 780 m by the first air blower 701 input air quantity3The air of/h, after primary heater 601 is preheated to 125 DEG C,
It is passed through in the inlet plenum 5 of the dry section bottom equipped with feeding device 9；It is 780 m by the second air blower 702 input air quantity3/ h's
Normal temperature air is passed directly into the inlet plenum 5 of the dry section bottom equipped with inert particle conveying device 8；Entire drying system is adopted
Use open system；
Inert particle in drying box 1 is in be passed through wet stock into the first hothouse A from feeding device 9 after fluidizing state and (select wet
The jinggangmeisu solution that base water content is 70%, is fed with the inlet amount of 20 kg/h by peristaltic pump, which belongs to cold brittleness
Material, 102 DEG C of whens, soften), be stained with wet stock inert particle successively flowed under material position difference motive force it is adjacent next dry
Dry room, inert particle conveying device 8(are feed screw) inert particle in final drying compartment B is delivered to the first hothouse
In A, to form inert particle in the indoor circulation of drying；Wet stock successively through adherency, drying, fall off process, after falling off
Material through gas entrainment by exhaust outlet 10 flow into gas-solid separating device 11(be cyclone separator), carry out material recycle, i.e.,
Complete the continuous drying recycling of wet stock；The drying effect of the present embodiment wet stock is good, and product is collected in cyclone separator,
Measurement product be averaged wet basis moisture content be 0.5%.
Content described in this specification is only to enumerate to inventive concept way of realization, and protection scope of the present invention is not answered
When the concrete form for being seen as limited by embodiment and being stated, protection scope of the present invention is also only in those skilled in the art's root
According to present inventive concept it is conceivable that equivalent technologies mean.
Claims (9)
1. a kind of back-shaped inert particles fluidized bed drying equipment, it is characterised in that including drying box (1), inert particle conveying device
(8), feeding device (9), at the top of drying box (1) by exhaust outlet (10) successively with gas-solid separating device (11) and air-introduced machine (12)
Piping connection, by heater (6) piping connection air blower (7), drying box (1) is internal equipped with gas point for drying box (1) bottom
Fabric swatch (4) is vertically installed with several partitions on gas distribution grid (4), and drying box (1) is divided into several hothouses by partition, often
Inert particle is filled in a hothouse；
First hothouse (A) side feed inlet and feeding device (9) piping connection, each indoor inert particle of drying is in material position
Successively to adjacent next dry indoor moveable under the action of difference；Final drying compartment (B) is equipped with inert particle conveying device
(8), for the conveying into the first hothouse (A) by the inert particle in final drying compartment (B), to form inert particle in drying
Indoor circulation.
2. a kind of back-shaped inert particles fluidized bed drying equipment according to claim 1, it is characterised in that further include dehumidifying
Device (13), the escape pipe of the air-introduced machine (12) pass through the air inlet pipe piping connection of dehumidifier (13) and air blower (7), so that by
The gas that air-introduced machine (12) is drawn enters air blower (7) after being dehumidified by dehumidifier (13), in secondary use tail gas
Heat.
3. a kind of back-shaped inert particles fluidized bed drying equipment according to claim 1 or 2, it is characterised in that gas distribution
Be provided with one piece of longitudinal baffle (2) and several lateral partitions (3) on plate (4), the longitudinal baffle (2) by drying box (1) to point
At two dry sections, the feeding device (9) and inert particle conveying device (8) are respectively set on two dry sections；Several cross
It is connect to partition (3) with longitudinal baffle (2) square crossing, two dry sections is divided into several hothouses respectively.
4. a kind of back-shaped inert particles fluidized bed drying equipment according to claim 3, it is characterised in that heater (6) packet
Primary heater (601) and secondary heater (602) are included, air blower (7) includes the first air blower (701) and the second air blower
(702)；Two dry section bottoms are respectively equipped with inlet plenum (5), are equipped with the inlet plenum (5) of the dry section bottom of feeding device (9)
By primary heater (601) the first air blower of piping connection (701), it is equipped with the dry section bottom of inert particle conveying device (8)
The inlet plenum (5) in portion passes through secondary heater (602) second air blower of piping connection (702).
5. a kind of back-shaped inert particles fluidized bed drying equipment according to claim 4, it is characterised in that by the first air blast
The gas temperature that machine (701) is passed through into the dry section for being equipped with feeding device (9) is 90 ~ 200 DEG C, preferably 120~130 DEG C；
The gas temperature being sent by the second air blower (702) is less than or equal to the gas temperature being sent by the first air blower (701).
6. a kind of back-shaped inert particles fluidized bed drying equipment according to claim 3, it is characterised in that longitudinal baffle (2)
One end and drying box (1) inner wall between be equipped with gap, formed between two dry sections for inert particle circulation channel
(100), the other end of the longitudinal baffle (2) is fixedly connected with drying box (1) inner wall.
7. a kind of back-shaped inert particles fluidized bed drying equipment according to claim 3, it is characterised in that longitudinal baffle (2)
The height at top is greater than the height at the top of lateral partitions (3), so as not to the inert particle of longitudinal baffle (2) two sides without circulate it is lower and
It is mutually mixed；The both ends of lateral partitions (3) are connect with the inner wall of drying box (1), and sky is equipped between bottom end and gas distribution grid (4)
Gap.
8. a kind of back-shaped inert particles fluidized bed drying equipment according to claim 1, it is characterised in that feeding device (9)
For feed screw or liquid dispersion device, the liquid dispersion device includes pump and distributor；Gas-solid separating device (11) is
Cyclone separator or bag filter；Inert particle conveying device (8) is feed screw.
9. a kind of drying means of the wet stock based on back-shaped inert particles fluidized bed drying equipment described in claim 1,
It is characterized in that the gas inputted by the first air blower (701) after primary heater (601) is preheated to 90 ~ 200 DEG C, is passed through and is equipped with
In the inlet plenum (5) of the dry section bottom of feeding device (9)；By the gas of the second air blower (702) input through secondary heater
(602) it after being preheated to 20 ~ 200 DEG C, is passed through in the inlet plenum (5) of the dry section bottom equipped with inert particle conveying device (8)；
The gas being passed through make the indoor inert particle of each drying in fluidisation state after, from feeding device (9) to the first hothouse (A)
It is inside passed through wet stock, the inert particle for being stained with wet stock successively flows into adjacent next hothouse under material position difference motive force,
It finally flows into final drying compartment (B), the inert particle in final drying compartment (B) is delivered to by inert particle conveying device (8)
In first hothouse (A), to form inert particle in the indoor circulation of drying；Wet stock successively through adherency, drying, fall off
Process, gas entrainment of the material through being passed through after falling off, flows into gas-solid separating device (11) by exhaust outlet (10), carries out material
The continuous drying recycling of wet stock is completed in recycling；
Entire drying system is open system or closed system, and open system is to be directly discharged to by the wind that air-introduced machine (12) are drawn
In environment, what air blower (7) blasted is the gas in environment；Closed system is that the gas drawn by air-introduced machine (12) passes through dehumidifying
Device (13) enters air blower (7) after being dehumidified, so that the heat in tail gas can be with secondary use, the dehumidifier of closed system
(13) escape pipe is divided into two-way, and two-way escape pipe connects with the first air blower (701) and the second air blower (702) pipeline respectively
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037913.5A CN109210870B (en) | 2018-09-06 | 2018-09-06 | Drying equipment and drying method for annular inert particle fluidized bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023704A (en) * | 2019-12-23 | 2020-04-17 | 济南岳丰能源科技有限公司 | Drying system and process for high chlorinated polyethylene resin |
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| CN111023704B (en) * | 2019-12-23 | 2021-05-07 | 济南岳丰能源科技有限公司 | Drying system and process for high chlorinated polyethylene resin |
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