CN201512420U - Aluminum hydroxide drying system - Google Patents

Aluminum hydroxide drying system Download PDF

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Publication number
CN201512420U
CN201512420U CN2009201440662U CN200920144066U CN201512420U CN 201512420 U CN201512420 U CN 201512420U CN 2009201440662 U CN2009201440662 U CN 2009201440662U CN 200920144066 U CN200920144066 U CN 200920144066U CN 201512420 U CN201512420 U CN 201512420U
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CN
China
Prior art keywords
aluminum hydroxide
flash dryer
links
drying
aluminium hydroxide
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009201440662U
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Chinese (zh)
Inventor
李锦�
杨晓波
田年益
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Baiyin Zhongtian Chemical Co Ltd
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Baiyin Zhongtian Chemical Co Ltd
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Priority to CN2009201440662U priority Critical patent/CN201512420U/en
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Publication of CN201512420U publication Critical patent/CN201512420U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

Abstract

The utility model discloses an aluminum hydroxide drying system for solving the problems that the process path of drying aluminum hydroxide through air flow is long, the production efficiency is low, the energy consumption is large, and water is difficult to meet the production requirements of dry aluminum hydroxide after aluminum hydroxide is dried. The aluminum hydroxide drying system comprises a blower, a hot air boiler, a flash evaporation drier, a double-cyclone separator, a material bin, a cloth bag deduster and a draught fan, wherein the blower is connected with the hot air boiler, the hot air boiler is connected with a flash evaporation drier, the flash evaporation drier is connected with the double-cyclone separator, the double-cyclone separator is connected with the cloth bag deduster, and the cloth bag deduter is connected with the draught fan. The aluminum hydroxide drying system has the advantages of short process path, full enclosure in the drying process, free foreign matter mixing, high finished product quality, excellent operation environment, high heat efficiency, short drying time and excellent energy-saving effect.

Description

The aluminium hydroxide dehumidification system
Technical field
The utility model relates to a kind of aluminium hydroxide dehumidification system.
Background technology
Aluminium hydroxide is that aluminum fluoride by dry process is produced one of main raw material(s), and its moisture content is 5~10%, and aluminum fluoride by dry process is produced its processing requirement starting material aluminium hydroxide and must be made moisture content can be used for producing less than 0.1% after drying.
The dry usual method of aluminium hydroxide is an air stream drying, heated hot gas flow flow at high speed in pipeline, and wet stock is moved to pipe outlet by high velocity gas stream after entering pipeline; Effect while water vapor owing to the transmission of heat by convection mass transfer in this process is evaporated.Owing to broken up the two thorough mixing by high velocity air after material enters pipeline, carry out the gas-solid two-phase at pipe outlet with cyclonic separator and must separate, waste gas is discharged through exhaust blower.Regardless of the material initial water content, ordinary material moisture is reduced to 0.3%~0.5%, is difficult to obtain the lower drying products of water content.Obviously can not satisfy aluminum fluoride by dry process production, moisture content is less than 0.1% requirement after the aluminium hydroxide drying.In addition, air stream drying must have dynamical dust collecting, otherwise the dust that tail gas carries will cause very big waste, also can be to forming the pollution to environment; To luming, being difficult for the dispersive material, need the good feeding device of performance, also need add crushing process sometimes; The resistance to flow of air stream drying system is fallen bigger, is generally 3000--4000Pa, must select high pressure or middle pressure ventilator for use, and power consumption is bigger.
The utility model content
The purpose of this utility model is to provide a kind of aluminium hydroxide dehumidification system, has to solve air stream drying aluminium hydroxide that operational path is long, production efficiency is low, energy input is big, and moisture is difficult to satisfy the problem of aluminum fluoride by dry process production requirement after the aluminium hydroxide drying.
The utility model comprises gas blower, hotblast stove, flash dryer, bispin fluidized drying machine, cyclonic separator, feed bin, sack cleaner, induced draft fan, gas blower links to each other with hotblast stove, hotblast stove links to each other with flash dryer, flash dryer links to each other with bispin fluidized drying machine, bispin fluidized drying machine links to each other with cyclonic separator, cyclonic separator links to each other with sack cleaner, and sack cleaner links to each other with induced draft fan.
The utlity model has that technical process is short, drying process is totally-enclosed, inclusion-free is sneaked into, final product quality height, good operational environment; The thermo-efficiency height, time of drying is short, the advantage of good energy-conserving effect.Fragmentation, dispersion, fluidized drying, air stream drying, the classification process of collection material are one, operate continuously; Equipment volume is little, and dry tenacity is big, and is simple in structure, reliable, operation, easy to maintenance.Especially the dried moisture of aluminium hydroxide is less than 0.1%, and component satisfies production requirement after production practice aluminium hydroxide drying.
The utility model material time is short, can finish the process of dry materials in 10 seconds.Expansion drying compares Pneumatic drying energy saving.Expansion drying, dry 1 ton of aluminium hydroxide needs coal gas 90m 3, folding standard coal 16.07kg; Air stream drying, dry 1 ton of aluminium hydroxide needs coal gas 115m 3, folding standard coal 20.54kg.Dry 1 ton of aluminium hydroxide, expansion drying is saved standard coal 21.76% than air stream drying.(coal gas signature coefficient is all with 0.1786kg/m 3Meter).
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of flash dryer in the utility model.
Embodiment
Following embodiment can make those skilled in the art more fully understand the utility model, but limits the utility model never in any form.
As shown in Figure 1, the utility model comprises gas blower 1, hotblast stove 2, flash dryer 3, bispin fluidized drying machine 4, cyclonic separator 5, feed bin 6, sack cleaner 7, induced draft fan 8, gas blower 1 links to each other with hotblast stove 2, hotblast stove 2 links to each other with flash dryer 3, flash dryer 3 links to each other with bispin fluidized drying machine 4, bispin fluidized drying machine 4 links to each other with cyclonic separator 5, and cyclonic separator 5 links to each other with sack cleaner 7, and sack cleaner 7 links to each other with induced draft fan 8.
Fig. 2 shows the structure of flash dryer in the utility model, and flash dryer 3 inner bottom part axles 31 are provided with material beater 34, and flash dryer 3 inside are provided with central tube 35.The middle and upper part of central tube 35 is with 120 ° and three point of fixity of uniform distribution, and corresponding with it flash dryer (3) inwall is provided with three point of fixity and cooperates, and fixes with the form of male-female sleeve.Leave the annular space of 200mm between the blade of central tube 35 material beaters 34.Flash dryer 3 bottoms are provided with gas distribution chamber 33, and the bottom surface of gas distribution chamber 33 is taper.Hot blast import summit, gas distribution chamber 33 taper bottom surface 32 height apart from drying machine cylindrical shell baseplane 37 are 100mm.The gas distribution chamber 33 hot blast import annular space height of flash dryer 3 increase to 100mm by 60mm.Be provided with circular baffle plate classifier 36 above the central tube 35 in the flash dryer 3.
The utility model working process is as follows:
A, coal gas by the gas station press through pipe-line transportation to hotblast stove 2, gas pressure is 7~10KPa, being lower than 6KPa can automatically report to the police, air enters from gas blower 1, combustion air pressure is 6Kpa, is lower than 3KPa and reports to the police automatically.
B, coal gas produce high-temperature gas after hotblast stove 2 burnings, the air outlet temperature of hotblast stove is controlled at 350~400 ℃.
C, the aluminium hydroxide that is dried are in feeding device is sent into flash dryer machine drum body 3; under driving, 34 rotations of material beater form strong rotation wind field; high-temperature gas tangentially enters in the gas distribution chamber 33 from the drying machine bottom; material fully contacts with hot blast, is heated, dry and under the intensive centrifugation, run foul of each other, rub and, be in fluidized state by micronize.The dryer section that dried particulate is brought into top by hot blast continues dry in the whirlwind field.One circular baffle plate classifier 36 is arranged at flash dryer 3 tops, be in material larger particles or that water content is bigger for those, because when centrifugal action is thrown toward the moisture eliminator barrel, kept off back dryer section by baffle plate classifier 36, again dry, and reach degree of drying and the less aluminium hydroxide of granularity is taken out of from drying machine top with hot blast.The central tube of establishing in the flash dryer 3 35 makes the interior back material of being broken up of drying machine promote no backup rapidly.Wind speed is 5-6m/s in the flash dryer, top hole pressure is controlled at-1.8~-2.5Kpa.The drying machine power of motor is 30KW.
D, for moisture after guaranteeing the aluminium hydroxide drying less than 0.1%, carry out drying and discharge through bispin fluidized drying machine 4 again from flash dryer 3 aluminium hydroxide that comes out by the top, enter cyclonic separator 5, the exhaust pressure of cyclonic separator 5 is-4~-7Kpa; Temperature is 90~130 ℃, and cyclonic separator 5 expellant gas enter pulsed jet cloth filter 7, the going out atmospheric pressure and be-5 of sack cleaner 7~-8Kpa, through induced draft fan 8 emptyings.
System's interior conduit diameter increases to DN500 by DN300, wind speed 10~20m/s, id-motor power 75KW.
E, the dried back aluminium hydroxide of being collected by cyclonic separator 5 and sack cleaner 7 are pooled to feed bin 6, deliver to subsequent processing through air conveying pump 9 again.

Claims (5)

1. aluminium hydroxide dehumidification system, it is characterized in that: it comprises gas blower (1), hotblast stove (2), flash dryer (3), bispin fluidized drying machine (4), cyclonic separator (5), feed bin (6), sack cleaner (7), induced draft fan (8), gas blower (1) links to each other with hotblast stove (2), hotblast stove (2) links to each other with flash dryer (3), flash dryer (3) links to each other with bispin fluidized drying machine (4), bispin fluidized drying machine (4) links to each other with cyclonic separator (5), cyclonic separator (5) links to each other with sack cleaner (7), and sack cleaner (7) links to each other with induced draft fan (8).
2. aluminium hydroxide dehumidification system according to claim 1 is characterized in that: described flash dryer (3) inner bottom part axle (31) is provided with material beater (34), and flash dryer (3) inside is provided with central tube (35).
3. aluminium hydroxide dehumidification system according to claim 2 is characterized in that: described flash dryer (3) bottom is provided with gas distribution chamber (33), and the bottom surface of gas distribution chamber (33) is taper.
4. according to claim 2 or 3 described aluminium hydroxide dehumidification systems, it is characterized in that: described gas distribution chamber (33) hot blast import summit, taper bottom surface (32) is 100mm apart from the height of drying machine cylindrical shell baseplane (37).
5. aluminium hydroxide dehumidification system according to claim 4 is characterized in that: be provided with circular baffle plate classifier (36) above the central tube (35) in the described flash dryer (3).
CN2009201440662U 2009-09-16 2009-09-16 Aluminum hydroxide drying system Expired - Lifetime CN201512420U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201440662U CN201512420U (en) 2009-09-16 2009-09-16 Aluminum hydroxide drying system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201440662U CN201512420U (en) 2009-09-16 2009-09-16 Aluminum hydroxide drying system

Publications (1)

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CN201512420U true CN201512420U (en) 2010-06-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102249657A (en) * 2011-04-21 2011-11-23 重庆上甲电子股份有限公司 Calcination and flash drying cyclic energy saving technology for intermediate wet carbonate from soft magnetic manganese zinc iron composite material prepared through precipitation method
CN103445065A (en) * 2013-09-02 2013-12-18 河南黄国粮业股份有限公司 Vortex air flow drying method for glutinous rice flour production
CN102020301B (en) * 2009-09-16 2014-03-12 白银中天化工有限责任公司 Aluminium hydroxide drying system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102020301B (en) * 2009-09-16 2014-03-12 白银中天化工有限责任公司 Aluminium hydroxide drying system
CN102249657A (en) * 2011-04-21 2011-11-23 重庆上甲电子股份有限公司 Calcination and flash drying cyclic energy saving technology for intermediate wet carbonate from soft magnetic manganese zinc iron composite material prepared through precipitation method
CN103445065A (en) * 2013-09-02 2013-12-18 河南黄国粮业股份有限公司 Vortex air flow drying method for glutinous rice flour production
CN103445065B (en) * 2013-09-02 2015-03-25 河南黄国粮业股份有限公司 Vortex air flow drying method for glutinous rice

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CX01 Expiry of patent term

Granted publication date: 20100623

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