CN105523574A - Compact agitated precipitator - Google Patents
Compact agitated precipitator Download PDFInfo
- Publication number
- CN105523574A CN105523574A CN201410517149.7A CN201410517149A CN105523574A CN 105523574 A CN105523574 A CN 105523574A CN 201410517149 A CN201410517149 A CN 201410517149A CN 105523574 A CN105523574 A CN 105523574A
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- CN
- China
- Prior art keywords
- blade
- decomposer
- compact
- cell body
- stirring
- Prior art date
- 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.)
- Pending
Links
- 239000012716 precipitator Substances 0.000 title abstract 7
- 238000003756 stirring Methods 0.000 claims description 39
- 210000005056 cell body Anatomy 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 15
- 238000001556 precipitation Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000013019 agitation Methods 0.000 abstract 4
- 238000000034 method Methods 0.000 description 4
- 206010039509 Scab Diseases 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010205 computational analysis Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a compact agitated precipitator with three layers of paddles. The compact agitated precipitator comprises a tank body (1), agitation shafts (2), blades (3), chargingpipes (4) and baffles (5). The compact agitated precipitator is characterized in that a plurality of agitation shafts (2) are arranged in the tank body (1); and three layers of blades (3) are arranged on each agitation shaft (2). According to the compact agitated precipitator, a low-speed region is prevented from forming in the precipitator, precipitation and scaling of seed crystal can be avoided, over agitation can be reduced, and broken seed crystal can be reduced. The compact agitated precipitator has a relatively good popularization effect and wide market prospect.
Description
Technical field
The present invention relates to one and simplify stirring decomposer, belong to aluminum oxide production device technical field.
Background technology
Decomposition of crystal seed is one of master operation of alumina producing, and mainly adopt decomposer (or claiming seed precipitation tank) to produce, the decomposer adopted at present is mainly Φ 14mx33 ~ 37m specification.Its primary process is exactly lowered the temperature by sodium aluminate solution, increases its degree of supersaturation, then adds aluminium hydroxide as crystal seed, and stir, by the agglomeration of crystal seed, grow up, produce product aluminium hydroxide.
Decomposer, the need of stirring, is the topic of arguing in the industry always.Early stage decomposition of crystal seed groove is all crystal seed in solution is evenly distributed by stirring to reach, does not produce the object of precipitation, and crystal seed can reach the sufficiently long residence time in groove and solution in groove between any two points is less than 3 ~ 5% containing difference admittedly.Alr mode once adopted the device such as guide shell, multi-layer oar blade agitator, substantially all unified at present for multilayer whipping appts (as shown in Figure 1).Patent of invention CN102806036A, CN102527275A, CN103663515, CN103936042A are all typical multilayer alr modes.Stir the number of plies generally even more at 5 layers, a common Φ 14x37m, the blade number of plies even may reach 8 layers.The decomposer mixing effect of this mode is good, admittedly can be low to moderate within 3 ~ 5% containing difference in groove between arbitrfary point.But there are many scholars in the industry to query this alr mode, think that too much stirring is not only consumed energy, and make die break, reduce the quality of aluminum hydroxide product on the contrary.
For these reasons, create non-stirring decomposer, being method aluminium (be called Pi Qini Aluminum at that time, existing genus make every effort to open up/add aluminium) patent of invention CN85108251A and be in recent years called as the scheme CN101628726A of " plug flow " the decomposer eighties the earliest, is all these type of.Do not establish whipping appts in program decomposer, crystal seed moves downward the extraction pipe mouth of pipe after being dropped into by groove top naturally, only passes to air and prevents its precipitation, scabs.Although this type of decomposer solves the problem of crystal seed fragmentation, solid comparatively large containing difference in groove, precipitation scabs obviously.Therefore in actual applications, one deck blade stirring has all been installed again additional at groove inner bottom part in each enterprise, precipitates in order to prevent bottom land.But from actual effect, sedimentation problem is still quite obvious.
In non-stirring decomposer groove as shown in Figure 2, there is the low regime of solution and crystal seed in velocity field distribution in groove, very easily produce precipitation and scab.Even if change the charging and discharging mode of decomposer slip, whole mass transfer process does not have the change of essence yet, the still existence in various degree of a large amount of low regime.
Only at the groove internal upper part of decomposer, one deck blade is respectively set close to the position of opening for feed and bottom and just may completes the effect stirring evenly import slip and stop bottom land precipitation.And blade interfloor distance so far away it also avoid the breakage that in groove, crystal seed produces because of collision, shearing etc.
Summary of the invention
The object of the invention is to, by analyzing the mass transfer process of solution in decomposer and seed particles, finding out its crystal seed laws of motion.Draw multilayer alr mode admittedly containing little and low in energy consumption without alr mode, the damaged few advantage of crystal seed of difference.Invent a kind of decomposer of the less blade number of plies.
Technical scheme of the present invention: comprise cell body (1), groove lid (2), drive-motor (3), stir shaft (4), blade (5), extraction pipe (6), baffle plate (7).It is characterized in that: arrange on many stir shafts (4) in cell body (1), blade (5) configuration 2 ~ 3 layers on every root stir shaft (4).
The object of the invention is to the stirring action weakening multi-layer oar blade, only adopt two-layer blade in theory.But according to the practical situation of existing decomposer, found by computational analysis: consolidating containing difference reasonable layout in decomposer be ensured, must ensure that the blade number of plies is carefully relevant than (i.e. the actual depth of water and groove diameter ratio) to the height of decomposer.Common Φ 12mx30m, Φ 14mx33m, Φ 14mx37m, the Φ 16mx40m more jumbo decomposer even from now on developed, as long as it is highly carefully no more than 3 than change, all should adopt the whipping appts of the blade that only haves three layers.Crystal seed can be reduced like this be subject to transition and stir and the breakage that produces, in turn ensure that each point in groove has less solid containing poor, and comparatively energy-conservation.
accompanying drawing explanation
Fig. 1 is that traditional multi-layer oar blade stirs decomposer schematic diagram.
Fig. 2 is velocity field distribution plan in non-stirring decomposer groove.
Fig. 3 is that single shaft of the present invention three layers of blade simplify stirring decomposer schematic diagram.
Fig. 4 is that multiaxis of the present invention three layers of blade simplify stirring decomposer schematic diagram.
Embodiment
Embodiment 1: as shown in Figure 3, single shaft of the present invention three layers of blade simplify stirring decomposer, establish a stir shaft in decomposer, axle are established three layers of blade, and wherein middle layer blade and other faults open 90 °.According to calculating such configuration mixing effect better, solid less containing difference in groove, power of agitator is about about 40% of conventional multilayer stirring.
Embodiment 2: as shown in Figure 4, the present invention three axle three layers of blade simplify stirring decomposer, evenly arrange 3 stir shafts in decomposer, and every axle establishes three layers of blade, and bottom blade at grade.The blade of remainder layer can according to calculation result with layer configuration or interconnected.Total power of agitator is lower than single shaft three layers of mode.But trouble spot is more.
Claims (7)
1. simplify stirring decomposer for one kind, it comprises cell body (1), stir shaft (2), blade (3), extraction pipe (4), baffle plate (5), it is characterized in that: arrange on many stir shafts (2) in cell body (1), blade (5) configuration 3 layers on every root stir shaft (4).
2. the one as requested described in 1 simplifies stirring decomposer, it is characterized in that: the stir shaft (4) arranged in cell body (1) can be 1 (being arranged at groove geometric centre), also can be many (dispersed layouts).
3. the one as requested described in 1 simplifies stirring decomposer, it is characterized in that: every layer of blade (5) diameter on stir shaft (4) is less than barrel diameter and deducts baffle plate (7) width.
4. the one as requested described in 1 simplifies stirring decomposer, it is characterized in that: decomposer tank (1) inwall should be provided with baffle plate (7).
5. the one as requested described in 1 simplifies stirring decomposer, it is characterized in that: when only there being 1 stir shaft (4) in cell body (1), its blade (5) orlop diameter should be more than or equal to the diameter of other layer of blade.
6. the one as requested described in 1 simplifies stirring decomposer, it is characterized in that: when there being many stir shafts (4) in cell body (1), and each axle blade (5) orlop should be arranged in sustained height.
7. the one as requested described in 1 simplifies stirring decomposer, it is characterized in that: the adjacent layers space projection position shape angle in 90 ° of blade (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410517149.7A CN105523574A (en) | 2014-09-30 | 2014-09-30 | Compact agitated precipitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410517149.7A CN105523574A (en) | 2014-09-30 | 2014-09-30 | Compact agitated precipitator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105523574A true CN105523574A (en) | 2016-04-27 |
Family
ID=55766157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410517149.7A Pending CN105523574A (en) | 2014-09-30 | 2014-09-30 | Compact agitated precipitator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105523574A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645444A (en) * | 2014-11-12 | 2016-06-08 | 贵阳铝镁设计研究院有限公司 | Simplified stirring decomposition tank with three layers of blades |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2084275C1 (en) * | 1993-02-01 | 1997-07-20 | Акционерное общество "Богословский алюминиевый завод" | Decomposer |
| CN203582514U (en) * | 2013-11-15 | 2014-05-07 | 中国铝业股份有限公司 | Aluminum oxide seed precipitation decomposition tank |
| CN203683113U (en) * | 2014-01-17 | 2014-07-02 | 贵州省新材料研究开发基地 | Aluminium oxide mechanical stirring decomposing tank |
| CN203710947U (en) * | 2013-12-31 | 2014-07-16 | 郑州九冶三维化工机械有限公司 | Aluminum oxide decomposer mixer |
-
2014
- 2014-09-30 CN CN201410517149.7A patent/CN105523574A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2084275C1 (en) * | 1993-02-01 | 1997-07-20 | Акционерное общество "Богословский алюминиевый завод" | Decomposer |
| CN203582514U (en) * | 2013-11-15 | 2014-05-07 | 中国铝业股份有限公司 | Aluminum oxide seed precipitation decomposition tank |
| CN203710947U (en) * | 2013-12-31 | 2014-07-16 | 郑州九冶三维化工机械有限公司 | Aluminum oxide decomposer mixer |
| CN203683113U (en) * | 2014-01-17 | 2014-07-02 | 贵州省新材料研究开发基地 | Aluminium oxide mechanical stirring decomposing tank |
Non-Patent Citations (2)
| Title |
|---|
| 任红艳等: "大型分解槽多轴搅拌数值模拟分析", 《第十五届中国科协年会论文集》 * |
| 高慧民等: "碳酸化分解槽机械搅拌的改造", 《有色设备》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645444A (en) * | 2014-11-12 | 2016-06-08 | 贵阳铝镁设计研究院有限公司 | Simplified stirring decomposition tank with three layers of blades |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Yi Inventor after: Chen Cairong Inventor after: Yang Zhenrong Inventor after: Wang You Inventor before: Ji Xuanming Inventor before: Yang Li |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170428 Address after: 550081 Guizhou Province, Guiyang City Lake District Jin Zhu Road No. 2 Applicant after: Guiyang Aluminum & Magnesium Design Institute Co., Ltd. Address before: 550001 Guizhou, Guiyang, Tengda Plaza, building A, building No. 17, No. 3 Applicant before: Ji Xuanming |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160427 |
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| RJ01 | Rejection of invention patent application after publication |