CN202379751U - Agitator for carbonation reaction for nano calcium carbonate - Google Patents
Agitator for carbonation reaction for nano calcium carbonate Download PDFInfo
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- CN202379751U CN202379751U CN2011205341432U CN201120534143U CN202379751U CN 202379751 U CN202379751 U CN 202379751U CN 2011205341432 U CN2011205341432 U CN 2011205341432U CN 201120534143 U CN201120534143 U CN 201120534143U CN 202379751 U CN202379751 U CN 202379751U
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- hollow disk
- calcium carbonate
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- carbonation reaction
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Abstract
The utility model relates to an agitator for carbonation reaction for nano calcium carbonates, which mainly comprises a rotary shaft, a reinforcing rotary shaft, more than two agitating blades, more than two hollow disk blades and a hollow disk. The upper end of the rotary shaft is connected with an intermediate transmission device at the top of a carbonation reactor. The lower end of the rotary shaft is welded to the upper end face of the reinforcing rotary shaft. The agitating blades and the hollow disk blades are evenly and radially disposed on the hollow disk. The lateral side of the large end of each agitating blade is welded to the reinforcing rotary shaft. The bottom lateral side of each agitating blade is welded to the hollow disk. The bottom lateral side of each hollow disk blade is welded to the hollow disk. The hollow disk of the agitator allows for easy formation of swirl from top to bottom and provides high shearing force for pulp and gas in the reactor so as to fully disperse and transfer mass for reaction mixed gases, so that utilization rate of carbon dioxide is increased, consumption of the carbon dioxide is reduced by 30%, efficiency is high, the time for carbonation reaction is shortened by 16-30%, product stability is stable, and the agitator is simple in design, low in manufacturing cost and high in economic benefit.
Description
Technical field
The utility model relates to a kind of chemical plant, relates in particular to a kind of whisking appliance that is used for nano-calcium carbonate carbonating building-up reactions.
Technical background
Nano-calcium carbonate is a kind of important Inorganic Chemicals, and along with national economy is fast-developing, China's nano-calcium carbonate industrial technology level and industrial scale are advanced by leaps and bounds in recent years.The carbonation reaction still is the key equipment that restricts nano-calcium carbonate size and other key properties in the production process.At present, the carbonation apparatus that is used for the nano-calcium carbonate chemosynthesis mainly contains several kinds:
(1) hypergravity synthesizer
Chinese invention patent CN95107423 discloses a kind of extra gravity field device of cross current rotary bed that can be used for the preparation of nano-calcium carbonate carbonating.This is the overweight force method synthesis reactor with leading level in the world that Beijing University of Chemical Technology developed at the beginning of 21 century, can prepare the nanometer grade calcium carbonate of particle diameter between 15～30nm.This DESIGN OF REACTOR is mainly theoretical based on molecular mixing and reactive crystallization; It is a high speed rotating bed; Lime white can obtain the centrifugal speed than big 2～3 one magnitude of universal gravity constant after rotating bed quickens; Greatly increase the gas-to-liquid contact face, strengthened mass transfer process, improved carbonation reaction speed greatly.Simultaneously,, limited growing up of crystal grain, utilized this equipment can prepare the minimum high quality nano precipitated chalk of particle diameter easily because reaction mixture obtains high dispersing in rotating bed.Shortcomings such as but the hypergravity synthesizer has complex design, and facility investment is big, and running cost is high, and the reactant gases utilization ratio is low, this big limitations its industrial application.
(2) emulsion reactor
China utility model patent CN247424 discloses a kind of nano-calcium carbonate carbonating synthesizer.This synthesizer biggest advantage is incorporated into mulser in the nano-calcium carbonate carbonating synthesizer exactly, makes whisking appliance have to stir, high-shear but intensity is suitable, can obviously strengthen solution-air, gas-solid mass transfer process.This device is furnished with the gas microbubbles producer, makes the entering synthesis reactor that gas can be even, stable.This device also is furnished with the epigranular device, makes that the dispersion of milk of lime is more even.The several means purpose that more than increases all be make product help super-refinement, size-grade distribution is narrower.The maximum characteristics of this carbonator are the application of mulser; But this also can significantly increase nano-calcium carbonate production energy consumption and equipment maintenance cost; And non-reaction produces heat effect and can compare significantly, is unfavorable for slurry mixture temperature controlling in the carbonation.
(3) gas stripping type reactor drum
The gas stripping type reactor drum is exactly cylinder of addition in common bubbling reactor; Carbon dioxide containing gas can be introduced by the cylinder inside/outside; Gas is down advanced from cylinder is outer/inner again after arriving reactor head; Thereby the slurries in the drive reactor drum form circulation inside and outside cylinder, the effect that Here it is " gas is carried ", and it is not having to play the effect that certain circulation is stirred under the situation of whisking appliance.China utility model patent CN03273383 discloses a kind of design of gas stripping type carbonation reactor, and this technology has been used comparatively generally at home.This reactor drum has simplicity of design, easy handling, advantage such as production energy consumption is low.But because of intensity of circulation is not enough, the gas stripping type reactor drum still can not effectively improve the mass transfer problem in the nano-sized carbon acidifying process, especially is in macroscopical stationary state basically in the great gelation stage whole reaction system of viscosity.So the general size distribution broad of the nano-calcium carbonate calcium product of this device fabrication, pattern is various, and the quality product fluctuation problem is serious.
(4) shell and tube reactor
China utility model patent CN200520023587.4 discloses a kind of nano-calcium carbonate synthetic shell and tube reactor that is used for.The primary structure of shell and tube reactor is the many tubulations that distribute uniformly in the reaction tower, hundreds of the micropores that distributing on the every tubulation, CO
2Gas is ejected at a high speed in the reactor drum through the tubulation micropore and forms three-dimensional aerodynamic-laid web, thereby realizes solution-air, gas-solid uniform contact, the final effective control that realizes product fineness and uniformity coefficient.But the carbonating slurries of gelation are difficult for passing through the micropore on the tubulation smoothly, even stop up tubulation.And the difficult cleaning of this reactor drum, the production cycle is longer, is unfavorable for the control of nano-calcium carbonate production cost.
(5) film reaction synthesizer
People such as Tsing-Hua University's wangkai have developed nano-calcium carbonate film reaction technology of preparing; Its principle of work is: dioxide containing gas is broken up into micron-sized bubble through microporous membrane, mixes the generation carbonation reaction then with the lime white that circulates and obtains nano-calcium carbonate.Use membrane reactor synthesis of nano lime carbonate, need under elevated pressures, to realize dioxide containing gas through microporous membrane, micropore is little, and resistance is big, and production energy consumption is higher, and efficient is low.And the maintenance of microporous membrane also is than distinct issues in this technology.
(6) emulsification cyclic carbon acidification reactor
To the synthetic CaCO of Bubbling method
3Existence is such as long reaction time, and production process is difficult to regulation and control, generates shortcomings such as goods dispersiveness and poor repeatability, and Chinese invention patent CN200610144016 discloses a kind of precipitated chalk synthesis flow: shear in the circulation line and introduce CO
2The carbonation reaction technology of gas, dioxide containing gas are sheared dispersion through emulsification pump with the carbonation reaction slurries after introducing circulation tube together.Such design has strengthened the dispersion and the mass transfer effect of gas and slurries.But emulsification pump is not remarkable to the dispersion effect of gas, has also influenced the emulsifying effectiveness of slurries.The prematurity still of this technology does not have examples of industrial application.
The utility model content
The purpose of the utility model: for overcoming the deficiency of existing nano-calcium carbonate carbonation reaction still or reactor assembly, the purpose of the utility model is to design a kind of improve carbon dioxide containing gas and slurries blending dispersion effect whisking appliance in the nano-calcium carbonate carbonation reaction.
The utility model is achieved in that
A kind of nano-calcium carbonate carbonation reaction whisking appliance, its structure mainly are made up of rotating shaft, reinforcement rotating shaft, agitating vane, hollow disk blade and hollow disk; The rotating shaft upper end is connected with carbonation reaction still crown center transmission mechanism; Rotating shaft lower end and reinforcement rotating shaft upper surface welding; The big end side surface of agitating vane is welded with strengthening rotating shaft, agitating vane bottom side and the welding of hollow disk, the bottom side of hollow disk blade and the welding of hollow disk.
Above-described agitating vane is provided with more than 2, and is the radial hollow disk that is uniformly distributed in.
Above-described hollow disk blade is provided with more than 2, and is the radial hollow disk that is uniformly distributed in.
Above-described agitating vane and hollow disk blade are provided with the sheet number and equate, and are the radial hollow disk that is uniformly distributed in.
The principle of work of nano-calcium carbonate carbonation reaction whisking appliance:
During the nano-calcium carbonate carbonation reaction; Agitator; Dioxide gas is introduced over against the below of whisking appliance by the reaction kettle bottom; Gas is broken through open circles disk center with nano-calcium carbonate, be stirred after the rising blade smash disperse and to around diffusion, hollow disk blade continue with nano-calcium carbonate smash disperse and to around diffusion.Agitating vane is that interior nano-calcium carbonate slurries of reaction kettle and dioxide gas provide high shear, and hollow disk blade also has the effect of similar agitating vane.Because agitating vane and hollow disk blade stir the nano-calcium carbonate slurries, the nano-calcium carbonate slurries flow in the circumference outside of whisking appliance at reaction kettle intermediate formation whirlpool from top to bottom from the bottom to top, form the macroscopic view circulation with the middle part whirlpool.Stir effect through changing agitating vane length, area and tilt adjustable joint.
The utlity model has following outstanding feature:
1, the agitator blades of high speed rotating is that the gentle body of slurries provides high shear in the reaction kettle, and reaction mixture is played abundant dispersion and effect of mass transmitting.
2, since fixedly the disk of agitating vane be hollow existence, be easy to form whirlpool from top to bottom, thereby reduced the effusion of carbon dioxide containing gas, improved the carbon dioxide gas utilization ratio.
3, the utility model simplicity of design, cost is low.
4, use the utility model and produce nano-calcium carbonate energy consumption reduction by 30%, efficient is high.
5, use the utility model and produce nano-calcium carbonate, can effectively shorten the carbonation reaction time, can shorten carbonation reaction time 16-30%.
6, use the utility model can prepare quality evenly, stabilized nano lime carbonate.
Description of drawings
The cross-sectional schematic of Fig. 1 the utility model whisking appliance.
Synoptic diagram is looked at the mansion of Fig. 2 the utility model whisking appliance.
Identify among the figure: the 1-rotating shaft; 2-strengthens rotating shaft; The 3-agitating vane; The hollow disk blade of 4-; The hollow disk of 5-.
Embodiment
Embodiment 1
Like Fig. 1 and Fig. 2, nano-calcium carbonate carbonation reaction whisking appliance is made up of rotating shaft 1, reinforcement rotating shaft 2, agitating vane 3, hollow disk blade 4 and hollow disk 5.Rotating shaft 1 upper end is connected with carbonation reaction still crown center transmission mechanism, and weld with strengthening rotating shaft 2 upper surfaces rotating shaft 1 lower end, and agitating vane 3 is provided with 4; Being radial is uniformly distributed on the hollow disk 5; The big end side surface of agitating vane 3 is welded with strengthening rotating shaft 2, agitating vane 3 bottom sides and 5 welding of hollow disk, and hollow disk blade 4 is provided with 4; Be radial and be uniformly distributed on the hollow disk 5, the bottom side of hollow disk blade 4 and 5 welding of hollow disk.
With CaCO
3Content got unslaked lime greater than 98.5% Wingdale in 3 hours at 1050 ℃ of temperature lower calcinations; Unslaked lime and water by mass ratio under 90 ± 5 ℃ temperature fully digest at 1: 4 slaked lime slurry; Lime white is through the screening slagging-off, and thin up is to Ca (OH)
2Solid content 8.5 ± 0.5%; Slurries are introduced the reaction kettle of being with the utility model, regulate 20 ℃ of slurry temperatures; Start stirring, feed CO
2Volumetric concentration is that 30 ± 2% lime-kiln gas makes the nano-calcium carbonate slurries until system pH＜8.5.The used nano-calcium carbonate slurry dried of present embodiment powder specific surface area is 24.3m
2/ g, the about 80nm of size of microcrystal, type of being cube regular morphology, powder good dispersion.Prepare nano-calcium carbonate with traditional bubbling carbonation reaction method and compare, use the utility model and can shorten the carbonation reaction time 30%, products obtained therefrom is more even.Stir carbonating process with normal tape and compare, use the utility model and can shorten the carbonation reaction time 16%, stir energy consumption and reduce by 30%.
Embodiment 2
Nano-calcium carbonate carbonation reaction whisking appliance is made up of rotating shaft 1, reinforcement rotating shaft 2, agitating vane 3, hollow disk blade 4 and hollow disk 5.Rotating shaft 1 upper end is connected with carbonation reaction still crown center transmission mechanism, and weld with strengthening rotating shaft 2 upper surfaces rotating shaft 1 lower end, and agitating vane 3 is provided with 3; Being radial is uniformly distributed on the hollow disk 5; The big end side surface of agitating vane 3 is welded with strengthening rotating shaft 2, agitating vane 3 bottom sides and 5 welding of hollow disk, and hollow disk blade 4 is provided with 3; Be radial and be uniformly distributed on the hollow disk 5, the bottom side of hollow disk blade 4 and 5 welding of hollow disk.
With CaCO
3Content got unslaked lime greater than 98.5% Wingdale in 3 hours at 1050 ℃ of temperature lower calcinations; Unslaked lime and water by mass ratio under 90 ± 5 ℃ temperature fully digest at 1: 4 slaked lime slurry; Lime white is through the screening slagging-off, and thin up is to Ca (OH)
2Solid content 8.5 ± 0.5%; Slurries are introduced the reaction kettle of being with the utility model, regulate 20 ℃ of slurry temperatures; Start stirring, feed CO
2Volumetric concentration is that 30 ± 2% lime-kiln gas makes the nano-calcium carbonate slurries until system pH＜8.5.The used nano-calcium carbonate slurry dried of present embodiment powder specific surface area is 24.3m
2/ g, the about 80nm of size of microcrystal, type of being cube regular morphology, powder good dispersion.Prepare nano-calcium carbonate with traditional bubbling carbonation reaction method and compare, use the utility model whisking appliance and can shorten the carbonation reaction time 30%, products obtained therefrom is more even.Stir carbonating process with normal tape and compare, this whisking appliance can shorten the carbonation reaction time 16%, stirs energy consumption and reduces by 30%.
Embodiment 3
Nano-calcium carbonate carbonation reaction whisking appliance is made up of rotating shaft 1, reinforcement rotating shaft 2, agitating vane 3, hollow disk blade 4 and hollow disk 5.Rotating shaft 1 upper end is connected with carbonation reaction still crown center transmission mechanism, and weld with strengthening rotating shaft 2 upper surfaces rotating shaft 1 lower end, and agitating vane 3 is provided with 2; Being radial is uniformly distributed on the hollow disk 5; The big end side surface of agitating vane 3 is welded with strengthening rotating shaft 2, agitating vane 3 bottom sides and 5 welding of hollow disk, and hollow disk blade 4 is provided with 2; Be radial and be uniformly distributed on the hollow disk 5, the bottom side of hollow disk blade 4 and 5 welding of hollow disk.
With CaCO
3Content got unslaked lime greater than 98.5% Wingdale in 3 hours at 1050 ℃ of temperature lower calcinations; Unslaked lime and water by mass ratio under 90 ± 5 ℃ temperature fully digest at 1: 4 slaked lime slurry; Lime white is through the screening slagging-off, and thin up is to Ca (OH)
2Solid content 8.5 ± 0.5%; Slurries are introduced the reaction kettle of being with the utility model, regulate 20 ℃ of slurry temperatures; Start stirring, feed CO
2Volumetric concentration is that 30 ± 2% lime-kiln gas makes the nano-calcium carbonate slurries until system pH＜8.5.The used nano-calcium carbonate slurry dried of present embodiment powder specific surface area is 24.3m
2/ g, the about 80nm of size of microcrystal, type of being cube regular morphology, powder good dispersion.Prepare nano-calcium carbonate with traditional bubbling carbonation reaction method and compare, use the utility model whisking appliance and can shorten the carbonation reaction time 30%, products obtained therefrom is more even.Stir carbonating process with normal tape and compare, this whisking appliance can shorten the carbonation reaction time 16%, stirs energy consumption and reduces by 30%.
Claims (4)
1. a nano-calcium carbonate carbonation reaction whisking appliance is characterized in that: be made up of rotating shaft (1), reinforcement rotating shaft (2), agitating vane (3), hollow disk blade (4) and hollow disk (5); Rotating shaft (1) upper end is connected with carbonation reaction still crown center transmission mechanism; Rotating shaft (1) lower end and reinforcement rotating shaft (2) upper surface welding; Big end side surface of agitating vane (3) and reinforcement rotating shaft (2) welding; Agitating vane (3) bottom side and hollow disk (5) welding, the bottom side of hollow disk blade (4) and hollow disk (5) welding.
2. nano-calcium carbonate carbonation reaction whisking appliance according to claim 1 is characterized in that: described agitating vane (3) is provided with more than 2, and is the radial hollow disk (5) that is uniformly distributed in.
3. nano-calcium carbonate carbonation reaction whisking appliance according to claim 1 is characterized in that: described hollow disk blade (4) is provided with more than 2, and is the radial hollow disk (5) that is uniformly distributed in.
4. nano-calcium carbonate carbonation reaction whisking appliance according to claim 1 is characterized in that: described agitating vane (3) and hollow disk blade (4) are provided with the sheet number and equate, and are the radial hollow disk (5) that is uniformly distributed in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205341432U CN202379751U (en) | 2011-12-20 | 2011-12-20 | Agitator for carbonation reaction for nano calcium carbonate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205341432U CN202379751U (en) | 2011-12-20 | 2011-12-20 | Agitator for carbonation reaction for nano calcium carbonate |
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| Publication Number | Publication Date |
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| CN202379751U true CN202379751U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205341432U Expired - Fee Related CN202379751U (en) | 2011-12-20 | 2011-12-20 | Agitator for carbonation reaction for nano calcium carbonate |
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| CN (1) | CN202379751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491399A (en) * | 2011-12-20 | 2012-06-13 | 广西华纳新材料科技有限公司 | Nano calcium carbonate carbonation reaction stirrer |
-
2011
- 2011-12-20 CN CN2011205341432U patent/CN202379751U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491399A (en) * | 2011-12-20 | 2012-06-13 | 广西华纳新材料科技有限公司 | Nano calcium carbonate carbonation reaction stirrer |
| CN102491399B (en) * | 2011-12-20 | 2013-12-25 | 广西华纳新材料科技有限公司 | Nano calcium carbonate carbonation reaction stirrer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Nano calcium carbonate carbonation reaction stirrer Effective date of registration: 20150826 Granted publication date: 20120815 Pledgee: Bank of Communications Ltd the Guangxi Zhuang Autonomous Region branch Pledgor: Guangxi Huana New Materials Science & Technology Co., Ltd. Registration number: 2015990000720 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190322 Granted publication date: 20120815 Pledgee: Bank of Communications Ltd the Guangxi Zhuang Autonomous Region branch Pledgor: Guangxi Huana New Materials Science & Technology Co., Ltd. Registration number: 2015990000720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20191220 |