CN202752019U - Precipitation reactor for producing silica - Google Patents
Precipitation reactor for producing silica Download PDFInfo
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- CN202752019U CN202752019U CN 201220391123 CN201220391123U CN202752019U CN 202752019 U CN202752019 U CN 202752019U CN 201220391123 CN201220391123 CN 201220391123 CN 201220391123 U CN201220391123 U CN 201220391123U CN 202752019 U CN202752019 U CN 202752019U
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- stirrer paddle
- precipitation reactor
- kettle
- silica
- stirring
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Abstract
The utility model belongs to the field of synthetic reaction technology and discloses a precipitation reactor for producing silica. The precipitation reactor comprises a kettle body and a stirrer. The stirrer comprises a stirring rod and a plurality of sets of stirring paddles, and the stirring paddles are arranged on the sidewall of the stirring rod and used for stirring reaction media. Each set of stirring paddles comprise first stirring paddles and second stirring paddles, the first stirring paddles are fixedly connected with the stirring rod, and the second stirring paddles are fixedly connected with the first stirring paddles. The width of the first stirring paddles is different from that of the second stirring paddles. According to the precipitation reactor for producing the silica, an original stirring paddle is changed from one piece to two pieces with different widths so that eddy current can be formed between the two pieces of the stirring paddles and the reaction media can be stirred more fully and evenly. The reaction time of the reaction media in the precipitation reactor is shortened, reaction efficiency is improved, and energy consumption is low. Therefore, large-scale production of the silica can be achieved.
Description
Technical field
The utility model relates to the synthetic reaction technical field, particularly relates to a kind of precipitation reactor of producing silica.
Background technology
Hydrated SiO 2 claims again white carbon, and its chemical formula is SiO
2NH
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, the sulfuric acid precipitation method take waterglass as raw material, the 2nd, the vapor phase method take silicon tetrachloride as raw material.Figure 1 shows that the flow chart of precipitation method production silica, the technical characteristics of sulfuric acid precipitation method is: in precipitation reactor, segmentation adds the certain density concentrated sulfuric acid in the certain density waterglass, and controls the pH value in the whole course of reaction, and reaction equation is:
Na
2O·mSiO
2+H
2SO
4+nH
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 processed through the pulp tank and are obtained dense silica slurry, carry out drying by drier again and realize Separation of Solid and Liquid, finally make the product white carbon.
Although it is simple that the precipitation method prepare silica technique, because waterglass and sulfuric acid mix inhomogeneously in precipitation reactor, the reaction time that generates silica is oversize, and production efficiency is low, and energy consumption is large, is difficult to accomplish scale production.
The utility model content
The technical problem that (one) will solve
The purpose of this utility model provides a kind of precipitation reactor of producing silica, and 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 above-mentioned utility model purpose, the utility model provides a kind of precipitation reactor of producing silica, comprise kettle and be arranged on the inner agitator that is used for stirring described kettle internal reaction medium of described kettle, wherein, described agitator comprises puddler and the many groups of stirrer paddles that are used for the stirring reaction medium that are arranged on the described puddler sidewall, described every group of stirrer paddle comprises the first stirrer paddle that is fixedly connected with described puddler and the second stirrer paddle that is fixedly connected with described the first stirrer paddle, and described the first stirrer paddle is different with the width of the second stirrer paddle.
The precipitation reactor of aforesaid production silica, preferably, the width of described the first stirrer paddle is greater than the width of described the second stirrer paddle.
The precipitation reactor of aforesaid production silica, preferably, described every group of stirrer paddle comprises that also described jockey is for can regulate the device of distance between described the first stirrer paddle and the second stirrer paddle be used to the jockey that connects described the first stirrer paddle and the second stirrer paddle.
The precipitation reactor of aforesaid production silica, preferably, described jockey is steel plate, laterally uniformly-spaced be provided with a plurality of holes on the described steel plate, wherein, described the first stirrer paddle is fixedly connected with by the screw that cooperates with described hole with an end of described steel plate, and described the second stirrer paddle is fixedly connected with by the screw that cooperates with described hole with the other end of described steel plate.
The precipitation reactor of aforesaid production silica, preferably, described many group stirrer paddles uniformly-spaced are arranged on the same cross section of described puddler, and the bottom of close described kettle.
The precipitation reactor of aforesaid production silica preferably, is fixedly installed propeller hub on the described puddler, and described the first stirrer paddle is connected with described puddler by described propeller hub.
The precipitation reactor of aforesaid production silica, preferably, described 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 described autoclave body bottom is provided with for the tremie pipe of discharging silica oar liquid.
The precipitation reactor of aforesaid production silica, preferably, the sidewall of described kettle is provided with for the steam inlet pipe that passes into water vapour to described kettle inside;
Described kettle top also is provided with the gland steam exhauster of the acid vapor that produces for discharge reaction medium course of reaction.
The precipitation reactor of aforesaid production silica, preferably, the material of described kettle is stainless steel.
The precipitation reactor of aforesaid production silica, preferably, the volume of described kettle is 45 ~ 130m
3
The precipitation reactor of aforesaid production silica, preferably, the slewing rate of described puddler is 25 ~ 100 rev/mins.
(3) beneficial effect
The precipitation reactor of production silica provided by the utility model is by 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 is the flow chart that the precipitation method are produced silica;
Fig. 2 is the structural representation of producing the precipitation reactor of silica among the utility model embodiment;
Fig. 3 is the structural representation of agitator among the utility model embodiment;
Fig. 4 is the front view of the utility model embodiment 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 drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
Figure 2 shows that the structural representation of producing the precipitation reactor of silica among the utility model embodiment.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 kettle 5 inner agitators 8 that are used for stirring kettle 5 internal reaction media, the position relationship that is provided with acid inlet tube 3 and water inlet glass tube 6(acid inlet tube 3 and water inlet glass tube 6 in the present embodiment on the kettle 5 is not limited to position relationship shown in the accompanying drawing 2), reaction medium in the kettle 5 is the sulfuric acid that is entered precipitation reactor by acid inlet tube 3 and the waterglass that is entered precipitation reactor by water inlet glass tube 6, wherein, agitator 8 comprises puddler 9 and the many groups of stirrer paddles 10 that are used for the stirring reaction medium that are arranged on puddler 9 sidewalls, in the present embodiment be two groups, as shown in Figure 3, every group of stirrer paddle 10 comprises the first stirrer paddle 11 that is fixedly connected with puddler 9 and the second stirrer paddle 12 that is fixedly connected with the first stirrer paddle 11, and the first stirrer paddle 11 is different with the width of the second stirrer paddle 12, in whipping process, can between the first stirrer paddle 11 and the second stirrer paddle 12, form eddy current, so that more full and uniform to the stirring of reaction medium, Reaction time shorten, energy consumes little.
The width of preferred the 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 the second stirrer paddle 12.
For so that mixing effect is better, two groups of stirrer paddles 10 uniformly-spaced are arranged on the same cross section of puddler 9 in the present embodiment, and the bottom near kettle 5, because waterglass can accumulate in the bottom of kettle 5 under Action of Gravity Field, two groups of stirrer paddles 10 are set on the same cross section, so that the stirring dynamics is stronger, the reaction medium of stirring is more even.
For power resources being 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 for rotating 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 the steadiness at whipping process puddler 9, the fixture 15 that can realize this function in the prior art has a lot, does not repeat them here.
Wherein, also be provided with steam inlet pipe 22 on the sidewall of kettle 5, be used for passing into water vapour in course of reaction to kettle 5 inside, keeping the temperature in the kettle 5 is 50 ~ 100 ℃, satisfy the reaction condition of reaction medium, simultaneously because temperature is higher, in course of reaction, can produce a small amount of acid vapor, preferably at kettle 5 tops gland steam exhauster 22 is set, is used for discharging acid vapor.
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 enter 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 pH value in the course of reaction by the flow rate of control sulfuric acid, pass into steam heating by steam inlet pipe 22 in precipitation reactor simultaneously, a small amount 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 has inclined angle alpha for cylinder-like structure and bottom, tremie pipe 7 is arranged on inclined angle alpha one side, is conducive to the silica slurry emptying in the precipitation reactor.
Among the utility model embodiment by 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, the first stirrer paddle 11 can be fixedly connected with puddler 9 by welding manner, also can realize and being fixedly connected with of puddler 9 by the propeller hub (not shown), so that the dismounting of agitator 8 is more flexible.
Need to be fixedly connected with between the first stirrer paddle 11 of stirrer paddle 10 and the second stirrer paddle 12, thereby realization synchronous rotary, while stirring reaction medium, jockey 13 can be set in the present embodiment connect the first stirrer paddle 11 and the second stirrer paddle 12, simultaneously can regulate distance between the first stirrer paddle 11 and the second stirrer paddle 12 by jockey 13 according to the diameter of kettle 5, usually the length of stirrer paddle 10 is 1/3 of kettle 5 diameters, is conducive to 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 the first stirrer paddle 11 and the second stirrer paddle 12 respectively, realize that the first stirrer paddle 11 and the second stirrer paddle 12 synchronous rotaries stir, when needs regulate between the first stirrer paddle 11 and the second stirrer paddle 12 apart from the time, can realize by the steel plate of changing different length.
But the connected mode of welding can cause being inconvenient to regulate the distance between the first stirrer paddle 11 and the 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, the first stirrer paddle 11 is fixedly connected with by the screw that cooperates with hole 14 with an end of steel plate, the second stirrer paddle 12 is fixedly connected with by the screw that cooperates with hole 14 with the other end of steel pipe, can regulate distance between the first stirrer paddle 11 and the second stirrer paddle 12 by the position of adjusting screw.
Certainly also have other to adjust the mode of distance between the first stirrer paddle 11 and the second stirrer paddle 12, repeat no more, it all belongs to protection domain of the present utility model.
For the ease of the fixing of kettle 5 with safeguard, on kettle 5, also be provided with two ear seats 1 and manhole 2 for fixing precipitation reactor, the people can pass in and out precipitation reactors by manhole 2, carry out cleaning and the maintenance of equipment.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 finished reaction by precipitation reactor provided by the utility model 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 utility model also is applicable to other mixed reaction medias with certain viscosity liquid needs well-beaten situation in course of reaction, be not limited to waterglass and sulfuric acid among the utility model embodiment, and it also belongs to protection domain of the present utility model.
The above only is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (12)
1. precipitation reactor of producing silica, comprise kettle and be arranged on the inner agitator that is used for stirring described kettle internal reaction medium of described kettle, it is characterized in that, described agitator comprises puddler and the many groups of stirrer paddles that are used for the stirring reaction medium that are arranged on the described puddler sidewall, described every group of stirrer paddle comprises the first stirrer paddle that is fixedly connected with described puddler and the second stirrer paddle that is fixedly connected with described the first stirrer paddle, and described the first stirrer paddle is different with the width of the second stirrer paddle.
2. the precipitation reactor of production silica according to claim 1 is characterized in that, the width of described the first stirrer paddle is greater than the width of described the second stirrer paddle.
3. the precipitation reactor of production silica according to claim 1, it is characterized in that, described every group of stirrer paddle comprises that also described jockey is for can regulate the device of distance between described the first stirrer paddle and the second stirrer paddle be used to the jockey that connects described the first stirrer paddle and the second stirrer paddle.
4. the precipitation reactor of production silica according to claim 3, it is characterized in that, described jockey is steel plate, laterally uniformly-spaced be provided with a plurality of holes on the described steel plate, wherein, described the first stirrer paddle is fixedly connected with by the screw that cooperates with described hole with an end of described steel plate, and described the second stirrer paddle is fixedly connected with by the screw that cooperates with described hole with the other end of described steel plate.
5. the precipitation reactor of production silica according to claim 1 is characterized in that, described many group stirrer paddles uniformly-spaced are arranged on the same cross section of described puddler, and the bottom of close described kettle.
6. the precipitation reactor of production silica according to claim 1 is characterized in that, is fixedly installed propeller hub on the described puddler, and described the first stirrer paddle is connected with described puddler by described propeller hub.
7. the precipitation reactor of arbitrary described production silica is characterized in that according to claim 1-6, and described 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 described autoclave body bottom is provided with for the tremie pipe of discharging silica slurry.
9. the precipitation reactor of arbitrary described production silica is characterized in that according to claim 1-6, and the sidewall of described kettle is provided with for the steam inlet pipe that passes into water vapour to described kettle inside;
Described kettle top also is provided with the gland steam exhauster of the acid vapor that produces for discharge reaction medium course of reaction.
10. the precipitation reactor of arbitrary described production silica is characterized in that according to claim 1-6, and the material of described kettle is stainless steel.
11. the precipitation reactor of arbitrary described production silica is characterized in that according to claim 1-6, the volume of described kettle is 45 ~ 130m
3
12. the precipitation reactor of arbitrary described production silica is characterized in that according to claim 1-6, the slewing rate of described puddler is 25 ~ 100 rev/mins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391123 CN202752019U (en) | 2012-08-08 | 2012-08-08 | Precipitation reactor for producing silica |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391123 CN202752019U (en) | 2012-08-08 | 2012-08-08 | Precipitation reactor for producing silica |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202752019U true CN202752019U (en) | 2013-02-27 |
Family
ID=47731215
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220391123 Expired - Lifetime CN202752019U (en) | 2012-08-08 | 2012-08-08 | Precipitation reactor for producing silica |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202752019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764624A (en) * | 2012-08-08 | 2012-11-07 | 确成硅化学股份有限公司 | Precipitation reactor for producing silica |
-
2012
- 2012-08-08 CN CN 201220391123 patent/CN202752019U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764624A (en) * | 2012-08-08 | 2012-11-07 | 确成硅化学股份有限公司 | Precipitation reactor for producing silica |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
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| CX01 | Expiry of patent term |