CN102764624A - Precipitation reactor for producing silica - Google Patents
Precipitation reactor for producing silica Download PDFInfo
- Publication number
- CN102764624A CN102764624A CN2012102804323A CN201210280432A CN102764624A CN 102764624 A CN102764624 A CN 102764624A CN 2012102804323 A CN2012102804323 A CN 2012102804323A CN 201210280432 A CN201210280432 A CN 201210280432A CN 102764624 A CN102764624 A CN 102764624A
- Authority
- CN
- China
- Prior art keywords
- stirrer paddle
- precipitation reactor
- kettle
- silica
- puddler
- 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
Images
Landscapes
- Silicon Compounds (AREA)
Abstract
The invention belongs to the technical field of synthesis reaction and discloses a precipitation reactor for producing silica, comprising a kettle and a stirrer. The stirrer comprises a stirring rod and a plurality of groups of stirring blades which are arranged on the side wall of the stirring rod and used for stirring the reaction medium; each group of stirring blades comprise a first stirring blade and a second stirring blade, wherein the first stirring blade is fixedly connected with the stirring rod, and the second stirring blade is fixedly connected with the first stirring blade, and the first stirring blade and the second stirring blade have different width. Because the original one stirring blade of the precipitation reactor for producing the silica is changed into two stirring blades with different width, a vortex can be formed between the two stirring blades, the reaction medium can be stirred more adequately and uniformly, the reaction time of the reaction medium in the precipitation reactor can be shortened, the reaction efficiency can be improved, the energy consumption can be reduced, and the large-scale production of the silica can be realized.
Description
Technical field
The present invention relates to the synthetic reaction technical field, particularly relate to a kind of precipitation reactor of producing silica.
Background technology
Hydrated SiO 2 is claimed white carbon again, and its chemical formula is SiO
2N H
2O is a kind of important fine inorganic chemical products, in every field such as rubber, plastics, agricultural chemicals, paint, pharmacy, papermaking, household chemicals extensive use is arranged.
The current technology of producing at present both at home and abroad white carbon has realized industrializedly mainly containing two kinds, and the one, be the sulfuric acid precipitation method of raw material with waterglass, the 2nd, be the vapor phase method of raw material with the silicon tetrachloride.The flow chart of producing silica for the precipitation method shown in Figure 1; The major technique characteristics of sulfuric acid precipitation method are: in precipitation reactor; Segmentation adds the certain density concentrated sulfuric acid in certain density waterglass, and the pH value in the control entire reaction course, and reaction equation is:
Na
2O·mSiO
2+H
2SO
4+n?H
2O→mSiO
2·（n+1）H
2O↓+Na
2SO
4
Rare silica oar liquid of gained is filtered out Na through filter wash
2SO
4Mother liquor, the silica filter cake that obtains are handled through the pulp jar and are obtained dense silica slurry, carry out drying through drier again and realize Separation of Solid and Liquid, finally make the product white carbon.
Though it is simple that the precipitation method prepare silica technology, because waterglass and sulfuric acid mix inhomogeneously in precipitation reactor, the reaction time of generation silica is oversize, and production efficiency is low, and energy consumption is big, is difficult to accomplish scale production.
Summary of the invention
The technical problem that (one) will solve
The purpose of this invention is to provide a kind of precipitation reactor of producing silica, to prepare the silicon dioxde reaction time long in order to solve the existing precipitation method, and production efficiency is low, the problem that energy consumption is high.
(2) technical scheme
For realizing the foregoing invention purpose; The present invention provides a kind of precipitation reactor of producing silica; Comprise kettle and be arranged on the agitator that said kettle inside is used to stir said kettle internal reaction medium; Wherein, Said agitator comprises puddler and is arranged on the many groups of stirrer paddles that are used for the stirring reaction medium on the said puddler sidewall that said every group of stirrer paddle comprises first stirrer paddle that is fixedly connected with said puddler and second stirrer paddle that is fixedly connected with said first stirrer paddle, and said first stirrer paddle is different with the width of second stirrer paddle.
The precipitation reactor of aforesaid production silica, preferably, the width of said first stirrer paddle is greater than the width of said second stirrer paddle.
The precipitation reactor of aforesaid production silica; Preferably; Said every group of stirrer paddle also comprises the jockey that is used to connect said first stirrer paddle and second stirrer paddle, and said jockey is for can regulate the device of distance between said first stirrer paddle and second stirrer paddle.
The precipitation reactor of aforesaid production silica; Preferably; Said jockey is a steel plate, laterally uniformly-spaced is provided with a plurality of holes on the said steel plate, wherein; Said first stirrer paddle is fixedly connected through the screw that cooperates with said hole with an end of said steel plate, and said second stirrer paddle is fixedly connected through the screw that cooperates with said hole with the other end of said steel plate.
The precipitation reactor of aforesaid production silica, preferably, said many group stirrer paddles uniformly-spaced are arranged on the same cross section of said puddler, and near the bottom of said kettle.
The precipitation reactor of aforesaid production silica preferably, is set with propeller hub on the said puddler, and said first stirrer paddle is connected with said puddler through said propeller hub.
The precipitation reactor of aforesaid production silica, preferably, said kettle is that cylinder-like structure and bottom have the inclination angle.
The precipitation reactor of aforesaid production silica, preferably, inclination angle one side of said autoclave body bottom is provided with the tremie pipe that is used to discharge silica oar liquid.
The precipitation reactor of aforesaid production silica, preferably, the sidewall of said kettle is provided with and is used for to the inner steam inlet pipe that feeds water vapour of said kettle;
Said kettle top also is provided with the gland steam exhauster that is used for discharging the acid vapor that the reaction medium course of reaction produces.
The precipitation reactor of aforesaid production silica, preferably, the material of said kettle is a stainless steel.
The precipitation reactor of aforesaid production silica, preferably, the volume of said kettle is 45 ~ 130m
3
The precipitation reactor of aforesaid production silica, preferably, the slewing rate of said puddler is 25 ~ 100 rev/mins.
(3) beneficial effect
The precipitation reactor of production silica provided by the present invention is through the improvement to stirrer paddle; Stirrer paddle is become different two of width by original one, can between two stirrer paddles, form eddy current, make the stirring of reaction medium more full and uniform; Shorten the reaction time of reaction medium in the precipitation reactor; Improved reaction efficiency, and energy consumption is low, can realizes the large-scale production of silica.
Description of drawings
Fig. 1 produces the flow chart of silica for the precipitation method;
Fig. 2 is a structural representation of producing the precipitation reactor of silica in the embodiment of the invention;
Fig. 3 is the structural representation of agitator in the embodiment of the invention;
Fig. 4 is the front view of embodiment of the invention light plate;
Wherein, 1: the ear seat; 2: manhole; 3: acid inlet tube; 4: stirring motor; 5: kettle; 6: the water inlet glass tube; 7: tremie pipe; 8: agitator; 9: puddler; 10: stirrer paddle; 11: the first stirrer paddles; 12: the second stirrer paddles; 13: jockey; 14: the hole; 15: fixture; 21: steam inlet pipe; 22: gland steam exhauster.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Shown in Figure 2 is the structural representation of producing the precipitation reactor of silica in the embodiment of the invention.As shown in Figure 2; The precipitation reactor (being called for short " precipitation reactor ") of producing silica comprises kettle 5 and is arranged on the agitator 8 that kettle 5 inside are used to stir kettle 5 internal reaction media; Kettle 5 is provided with acid inlet tube 3 and water inlet glass tube 6 (the position relation of acid inlet tube 3 and water inlet glass tube 6 is not limited to the relation of position shown in the accompanying drawing 2) in the present embodiment; Reaction mediums in the kettle 5 be to be got into the sulfuric acid of precipitation reactors and got into the waterglass of precipitation reactors by water inlet glass tube 6 by acid inlet tube 3, and wherein, agitator 8 comprises puddler 9 and is arranged on the many groups of stirrer paddles 10 that are used for the stirring reaction medium on puddler 9 sidewalls; In the present embodiment be two groups; As shown in Figure 3, every group of stirrer paddle 10 comprises first stirrer paddle 11 that is fixedly connected with puddler 9 and second stirrer paddle 12 that is fixedly connected with first stirrer paddle 11, and first stirrer paddle 11 is different with the width of second stirrer paddle 12; In whipping process, can between first stirrer paddle 11 and second stirrer paddle 12, form eddy current; Feasible more full and uniform to the stirring of reaction medium, shorten the reaction time, energy consumes little.
The width of preferred first stirrer paddle 11, can also effectively reduce and stir the moment that produces when realizing abundant stirring reaction medium greater than the width of second stirrer paddle 12.
In order to make mixing effect better; Two groups of stirrer paddles 10 uniformly-spaced are arranged on the same cross section of puddler 9 in the present embodiment; And,, two groups of stirrer paddles 10 are set on the same cross section because waterglass can accumulate in the bottom of kettle 5 under the gravity effect near the bottom of kettle 5; Make that the stirring dynamics is stronger, the reaction medium of stirring is more even.
In order power resources to be provided for agitator 8; Can the stirring motor 4 that be connected with puddler 9 one ends be set at the top of kettle 5 in the present embodiment; Be used to rotate puddler 9; Thereby drive stirrer paddle 10 and rotate the reaction medium that stirs in the precipitation reactor, the slewing rate of general puddler 9 is 15 ~ 45 revolutions per seconds.Can also the fixture 15 that be rotatably connected with puddler 9 other ends be set in the bottom of precipitation reactor; Be used for strengthening steadiness at whipping process puddler 9; The fixture 15 that can realize this function in the prior art has a lot, repeats no more at this.
Wherein, also be provided with steam inlet pipe 22 on the sidewall of kettle 5, be used in course of reaction to the kettle 5 inner water vapours that feed; Keeping the temperature in the kettle 5 is 50 ~ 100 ℃; Satisfy the reaction condition of reaction medium,, in course of reaction, can produce a spot of acid vapor simultaneously because temperature is higher; Preferably gland steam exhauster 22 is set, is used to discharge acid vapor at kettle 5 tops.
In order to prevent kettle 5 by corrosion such as sulfuric acid, water vapours, can to select model be the stainless steel of 316L to the material of kettle 5 in the present embodiment.
Produce in the silica process in the precipitation method; Waterglass and sulfuric acid get into precipitation reactor by water inlet glass tube 6 and acid inlet tube 3 respectively according to certain flow rate; Open stirring motor 4, utilize the abundant stirring reaction medium of stirring action of stirrer paddle 10, and control the pH value in the course of reaction through the flow rate of control sulfuric acid; In precipitation reactor, feed the water vapour heating through steam inlet pipe 22 simultaneously, a spot of acid vapor that produces in the course of reaction is discharged from the gland steam exhauster 12 of reactor head.
Bottom at kettle 5 also is provided with tremie pipe 7; After reaction finishes; The silica slurry that generates can be discharged from tremie pipe 7; Preferred kettle 5 is for cylinder-like structure and bottom have inclined angle alpha, and tremie pipe 7 is arranged on inclined angle alpha one side, helps the silica slurry emptying in the precipitation reactor.
In the embodiment of the invention through the stirrer paddle in the existing precipitation reactor of producing silica is improved; Stirrer paddle is become different two of width by original one, can between two stirrer paddles, form eddy current, make the stirring of reaction medium more full and uniform; Shorten the reaction time of reaction medium in the precipitation reactor; Improved reaction efficiency, and energy consumption is low, can realizes the large-scale production of silica.
Wherein, first stirrer paddle 11 can be fixedly connected with puddler 9 through welding manner, also can pass through being fixedly connected of the realization of propeller hub (not shown) and puddler 9, makes that the dismounting of agitator 8 is more flexible.
Need to be fixedly connected between first stirrer paddle 11 of stirrer paddle 10 and second stirrer paddle 12; Thereby realize rotation synchronously; While stirring reaction medium; Jockey 13 can be set in the present embodiment connect first stirrer paddle 11 and second stirrer paddle 12; Simultaneously can regulate the distance between first stirrer paddle 11 and second stirrer paddle 12 through jockey 13 according to the diameter of kettle 5, the length of stirrer paddle 10 is 1/3 of kettle 5 diameters usually, helps the stirring of reaction medium.
The jockey 13 that can realize above-mentioned functions has a variety of; For example: can select steel plate; The two ends of steel plate can weld together with first stirrer paddle 11 and second stirrer paddle 12 respectively; Realize that the rotation synchronously of first stirrer paddle 11 and second stirrer paddle 12 stirs, when needs regulate between first stirrer paddle 11 and second stirrer paddle 12 apart from the time, can realize through the steel plate of changing different length.
But the connected mode of welding can cause being inconvenient to regulate the distance between first stirrer paddle 11 and second stirrer paddle 12; For addressing this problem; Preferably on steel plate, laterally uniformly-spaced be provided with a plurality of holes 14 in the present embodiment; As shown in Figure 4; First stirrer paddle 11 is fixedly connected through the screw that cooperates with hole 14 with an end of steel plate, and second stirrer paddle 12 is fixedly connected through the screw that cooperates with hole 14 with the other end of steel pipe, can regulate the distance between first stirrer paddle 11 and second stirrer paddle 12 through the position of adjustment screw.
Certainly also have other to adjust the mode of distance between first stirrer paddle 11 and second stirrer paddle 12, repeat no more, it all belongs to protection scope of the present invention.
Fixing and maintenance for the ease of kettle 5 also is provided with two the ear seats 1 and manhole 2 that are used for fixing precipitation reactor on kettle 5, the people can carry out the cleaning and the maintenance of equipment through manhole 2 turnover precipitation reactors.Preferred 45 ~ the 130m of the volume of kettle 5 size wherein
3, can satisfy the people and pass in and out kettle 5.
Waterglass and sulfuric acid were accomplished reaction through precipitation reactor provided by the present invention in 90 minutes under 50 ~ 100 ℃ of temperature conditions; Can realize the large-scale production of precipitation method production silica; Effectively raise efficiency of energy utilization, reduced energy consumption, reduced production cost.
Certainly the present invention is applicable to that also other hybrid reaction media with certain viscosity liquid need well-beaten situation in course of reaction, is not limited to waterglass and sulfuric acid in the embodiment of the invention, and it also belongs to protection scope of the present invention.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and replacement, these improvement and replacement also should be regarded as protection scope of the present invention.
Claims (12)
1. precipitation reactor of producing silica; Comprise kettle and be arranged on the agitator that said kettle inside is used to stir said kettle internal reaction medium; It is characterized in that; Said agitator comprises puddler and is arranged on the many groups of stirrer paddles that are used for the stirring reaction medium on the said puddler sidewall; Said every group of stirrer paddle comprises first stirrer paddle that is fixedly connected with said puddler and second stirrer paddle that is fixedly connected with said first stirrer paddle, and said first stirrer paddle is different with the width of second stirrer paddle.
2. the precipitation reactor of production silica according to claim 1 is characterized in that, the width of said first stirrer paddle is greater than the width of said second stirrer paddle.
3. the precipitation reactor of production silica according to claim 1; It is characterized in that; Said every group of stirrer paddle also comprises the jockey that is used to connect said first stirrer paddle and second stirrer paddle, and said jockey is for can regulate the device of distance between said first stirrer paddle and second stirrer paddle.
4. the precipitation reactor of production silica according to claim 3; It is characterized in that; Said jockey is a steel plate, laterally uniformly-spaced is provided with a plurality of holes on the said steel plate, wherein; Said first stirrer paddle is fixedly connected through the screw that cooperates with said hole with an end of said steel plate, and said second stirrer paddle is fixedly connected through the screw that cooperates with said hole with the other end of said steel plate.
5. the precipitation reactor of production silica according to claim 1 is characterized in that, said many group stirrer paddles uniformly-spaced are arranged on the same cross section of said puddler, and near the bottom of said kettle.
6. the precipitation reactor of production silica according to claim 1 is characterized in that, is set with propeller hub on the said puddler, and said first stirrer paddle is connected with said puddler through said propeller hub.
7. according to the precipitation reactor of the arbitrary described production silica of claim 1-6, it is characterized in that said kettle is that cylinder-like structure and bottom have the inclination angle.
8. the precipitation reactor of production silica according to claim 7 is characterized in that, inclination angle one side of said autoclave body bottom is provided with the tremie pipe that is used to discharge silica slurry.
9. according to the precipitation reactor of the arbitrary described production silica of claim 1-6, it is characterized in that the sidewall of said kettle is provided with and is used for to the inner steam inlet pipe that feeds water vapour of said kettle;
Said kettle top also is provided with the gland steam exhauster that is used for discharging the acid vapor that the reaction medium course of reaction produces.
10. according to the precipitation reactor of the arbitrary described production silica of claim 1-6, it is characterized in that the material of said kettle is a stainless steel.
11. the precipitation reactor according to the arbitrary described production silica of claim 1-6 is characterized in that, the volume of said kettle is 45 ~ 130m
3
12. the precipitation reactor according to the arbitrary described production silica of claim 1-6 is characterized in that, the slewing rate of said puddler is 25 ~ 100 rev/mins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102804323A CN102764624A (en) | 2012-08-08 | 2012-08-08 | Precipitation reactor for producing silica |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102804323A CN102764624A (en) | 2012-08-08 | 2012-08-08 | Precipitation reactor for producing silica |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102764624A true CN102764624A (en) | 2012-11-07 |
Family
ID=47092330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102804323A Pending CN102764624A (en) | 2012-08-08 | 2012-08-08 | Precipitation reactor for producing silica |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102764624A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874340A (en) * | 2015-05-27 | 2015-09-02 | 成都易创思生物科技有限公司 | Vertical stirring reaction kettle |
| CN105236435A (en) * | 2015-09-10 | 2016-01-13 | 安徽龙泉硅材料有限公司 | Wet production process of sodium silicate for fast-drying cement |
| CN105236436A (en) * | 2015-09-10 | 2016-01-13 | 安徽龙泉硅材料有限公司 | Wet production process of sodium silicate for washing powder |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4238159A (en) * | 1975-07-15 | 1980-12-09 | Ekato-Werk Erich Karl Todtenhaupt | Apparatus for extracting alumina from bauxite |
| CN86107429A (en) * | 1986-10-27 | 1988-05-11 | 贵州铝厂 | A kind of grader of continuous production coarse aluminium hydroxide |
| CN1608723A (en) * | 2004-07-02 | 2005-04-27 | 江苏牧羊集团有限公司 | Paddle type mixing machine |
| CN201244458Y (en) * | 2008-08-21 | 2009-05-27 | 郑州九冶三维化工机械有限公司 | Agitator with changeable diameter of impeller |
| CN201244459Y (en) * | 2008-08-21 | 2009-05-27 | 郑州九冶三维化工机械有限公司 | Multistage countercurrent agitation valve |
| CN201728108U (en) * | 2010-06-29 | 2011-02-02 | 山东大地盐化集团有限公司 | White carbon black reactor |
| CN201999740U (en) * | 2011-01-04 | 2011-10-05 | 福建正盛无机材料股份有限公司 | White carbon black reaction steam heating device by precipitation method |
| CN202752019U (en) * | 2012-08-08 | 2013-02-27 | 确成硅化学股份有限公司 | Precipitation reactor for producing silica |
-
2012
- 2012-08-08 CN CN2012102804323A patent/CN102764624A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4238159A (en) * | 1975-07-15 | 1980-12-09 | Ekato-Werk Erich Karl Todtenhaupt | Apparatus for extracting alumina from bauxite |
| CN86107429A (en) * | 1986-10-27 | 1988-05-11 | 贵州铝厂 | A kind of grader of continuous production coarse aluminium hydroxide |
| CN1608723A (en) * | 2004-07-02 | 2005-04-27 | 江苏牧羊集团有限公司 | Paddle type mixing machine |
| CN201244458Y (en) * | 2008-08-21 | 2009-05-27 | 郑州九冶三维化工机械有限公司 | Agitator with changeable diameter of impeller |
| CN201244459Y (en) * | 2008-08-21 | 2009-05-27 | 郑州九冶三维化工机械有限公司 | Multistage countercurrent agitation valve |
| CN201728108U (en) * | 2010-06-29 | 2011-02-02 | 山东大地盐化集团有限公司 | White carbon black reactor |
| CN201999740U (en) * | 2011-01-04 | 2011-10-05 | 福建正盛无机材料股份有限公司 | White carbon black reaction steam heating device by precipitation method |
| CN202752019U (en) * | 2012-08-08 | 2013-02-27 | 确成硅化学股份有限公司 | Precipitation reactor for producing silica |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874340A (en) * | 2015-05-27 | 2015-09-02 | 成都易创思生物科技有限公司 | Vertical stirring reaction kettle |
| CN105236435A (en) * | 2015-09-10 | 2016-01-13 | 安徽龙泉硅材料有限公司 | Wet production process of sodium silicate for fast-drying cement |
| CN105236436A (en) * | 2015-09-10 | 2016-01-13 | 安徽龙泉硅材料有限公司 | Wet production process of sodium silicate for washing powder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203030213U (en) | Pulse-type airflow mixing mechanical stirring shaft | |
| CN102897815B (en) | Nano-calcium carbonate carbonization reaction kettle | |
| CN205241697U (en) | High -efficient defoaming formula fermentation tank | |
| CN102764624A (en) | Precipitation reactor for producing silica | |
| CN101955212B (en) | Sodium aluminate solution plug-flow decomposition reactor | |
| CN101407320B (en) | Vertical reaction device for preparing nano carbon fibre in batch | |
| CN201720005U (en) | Kettle type stirrer for composite reactions | |
| CN102765728A (en) | Precipitation reactor for producing highly dispersed silicon dioxide | |
| CN202752019U (en) | Precipitation reactor for producing silica | |
| CN202953834U (en) | Nanometer calcium carbonate carbonation reaction still | |
| CN102583484A (en) | Carbonization kettle and method for preparing nanometer calcium carbonate by using same | |
| CN203754439U (en) | Conic bottom perturbation plug flow aluminum hydroxide crystal reactor | |
| CN104387258B (en) | A kind of production of chloroacetic acid method and chlorination reactor | |
| CN201459004U (en) | Modified polyether polymerization kettle | |
| CN202754808U (en) | Precipitation reactor for producing high-dispersion silica | |
| CN107587368A (en) | A kind of bio-pulping equipment | |
| CN203683113U (en) | Aluminium oxide mechanical stirring decomposing tank | |
| CN206199204U (en) | A kind of aluminum sulfate pressure reaction still | |
| CN202387465U (en) | Large adipic acid reactor | |
| CN206064191U (en) | A kind of sodium silicate solid dissolving apparatus | |
| CN209721610U (en) | A kind of out of stock catalysis titanium white production enrichment facility of environment-friendly type | |
| CN105617962A (en) | Inner-and-outer-circulation-type ultrasonic-microwave stirring reaction kettle | |
| CN206562304U (en) | A kind of two fluid sprays method produces the device of nano silicon | |
| CN214234002U (en) | Modified tank for preparing light calcium carbonate | |
| CN203944318U (en) | A kind of epoxy-based lacquers is disperseed cooling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121107 |