CN212594084U - Concentration kettle - Google Patents
Concentration kettle Download PDFInfo
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- CN212594084U CN212594084U CN202021374069.8U CN202021374069U CN212594084U CN 212594084 U CN212594084 U CN 212594084U CN 202021374069 U CN202021374069 U CN 202021374069U CN 212594084 U CN212594084 U CN 212594084U
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- heating
- crystallization
- conical top
- evaporation
- inner cavity
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- 238000010438 heat treatment Methods 0.000 claims abstract description 101
- 230000008020 evaporation Effects 0.000 claims abstract description 33
- 238000001704 evaporation Methods 0.000 claims abstract description 33
- 238000002425 crystallisation Methods 0.000 claims abstract description 31
- 230000008025 crystallization Effects 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims description 14
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract description 52
- 239000013078 crystal Substances 0.000 abstract description 27
- 235000010265 sodium sulphite Nutrition 0.000 abstract description 25
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 4
- 229940001482 sodium sulfite Drugs 0.000 description 23
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 229940101006 anhydrous sodium sulfite Drugs 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a concentration kettle, which comprises an evaporation part, a heating part and a crystallization part; one end of the heating part is communicated with the evaporation part, and the other end of the heating part is communicated with the crystallization part; a plurality of heating pipes are arranged in the inner cavity wall of the heating part, and the axial directions of the heating pipes and the concentrating kettle are in the same direction; the cross section area of the inner cavity wall is 50-70% of that of the heating part; the crystallization part comprises a conical top part, the conical top of the conical top part is back to the heating part, and a discharge hole is formed in the conical top of the conical top part. The application provides a mode of concentrated cauldron through set up many heating pipes in the inner chamber of heating portion, evenly cut apart into a plurality of relatively independent tiny inner chambers with heating portion inner chamber wall, can make heating portion obtain more abundant even heating, make reaction solution fully flow in concentrated cauldron, produce the great sodium sulfite crystal of crystalline grain size and can sink the output, effectively promote the preparation efficiency of big crystalline grain sodium sulfite crystal and reduce the production energy consumption.
Description
Technical Field
The utility model relates to a concentrated mechanical equipment field especially relates to a concentrated cauldron.
Background
The anhydrous sodium sulfite is usually obtained by evaporative crystallization, but because the crystal growth is influenced by operations such as stirring of raw materials and transportation during evaporative crystallization, the crystal particle size of the final product can be small, even in powder form, which cannot meet the needs of customers, for example, the fine-grained sodium sulfite is easy to dust and is easy to adhere to production equipment, which has a great adverse effect on the production environment.
At present, most manufacturers want to produce large-particle sodium sulfite products by adopting a single-effect concentration kettle as production equipment and by adopting the process modes of increasing concentration time, reducing stirring speed and the like, the method can obtain better crystal particles to a certain extent, but greatly influences the yield of the products and has high comprehensive energy consumption.
SUMMERY OF THE UTILITY MODEL
This application is directed against the shortcoming of current mode, provides a concentrated cauldron for solve the unable large granule sodium sulfite product of producing of the ordinary single-effect concentrated cauldron of adoption that prior art exists, perhaps influence the technical problem of product output and energy consumption.
In a first aspect, embodiments of the present invention provide a concentration kettle, including an evaporation section, a heating section, and a crystallization section;
one end of the heating part is communicated with the evaporation part, and the other end of the heating part is communicated with the crystallization part;
a plurality of heating pipes are arranged in the inner cavity wall of the heating part, and the axial directions of the heating pipes and the concentrating kettle are in the same direction; the cross sectional area of the inner cavity wall is 50% -70% of the cross sectional area of the heating part;
the crystallization part comprises a conical top part, the conical top of the conical top part faces back to the heating part, and a discharge hole is formed in the conical top of the conical top part.
In certain implementations of the first aspect, the length of the evaporation part in the axial direction of the concentration tank is 15% to 25% of the length of the concentration tank.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the heating section is cylindrical and the evaporation section is cylindrical; the ratio of the maximum diameter of the inner cavity of the evaporation part to the diameter of the inner cavity of the heating part is 1.5-2: 1.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the length of the heating portion in the axial direction of the concentrating tank is 35% to 45% of the length of the concentrating tank.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the crystallization portion further includes a cylindrical portion, one end of the cylindrical portion is connected to the heating portion, and the other end of the cylindrical portion is connected to the conical top portion; the length of the cylindrical part in the axial direction of the concentration kettle is 20-30% of the length of the heating part.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the heating pipe includes several rows of hollow pipes uniformly distributed in the heating part inner cavity; the included angle of any two adjacent rows of heating pipes is the same, and the distance between two adjacent hollow pipes on each row of heating pipes is the same.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the concentration tank further includes an automatic feeding device, and the automatic feeding device is communicated with the evaporation part through a pipeline.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the concentration tank further includes a stirring device; the stirring device comprises a motor, a connecting rod and a stirring paddle; the motor sets up outside the evaporation department and dorsad heating portion one side, the connecting rod extends to in the inner chamber of crystallization portion, the stirring rake is connected the top of connecting rod just is located in the inner chamber of crystallization portion.
In a second aspect, the present application also provides a process for the preparation of sodium sulfite crystals using a concentrating kettle as provided in any one of the examples of the first aspect of the present application to produce sodium sulfite crystals.
The technical scheme provided in the embodiment of the application has the following beneficial technical effects:
the application provides a mode of concentrated cauldron through set up many heating pipes in the inner chamber of heating portion, evenly cut apart into a plurality of relatively independent tiny inner chambers with the heating portion inner chamber, can make the heating portion obtain more abundant heating, make reaction solution fully flow in concentrated cauldron, and the sodium sulfite crystal of the jumbo size crystalline grain of production then can sink in the crystallization portion, make the sodium sulfite crystal of tiny crystalline grain fully flow and constantly grow up in the heating portion inner cavity, consequently, can produce the bigger sodium sulfite crystal of crystalline grain size, effectively promote the preparation efficiency of big crystalline grain sodium sulfite crystal and reduce the production energy consumption.
Additional aspects and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic plan view of a thickener in an embodiment of the present invention;
fig. 2 is a schematic sectional view of a heating portion of a concentration kettle according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Possible embodiments of the invention are given in the figures. The invention may, however, be embodied in many different forms and is not limited to the embodiments described herein by way of example only and with reference to the accompanying drawings. The embodiments described herein with reference to the drawings are illustrative for the purpose of providing a more thorough understanding of the present disclosure and are not to be construed as limiting the present disclosure. Furthermore, if a detailed description of known technologies is not necessary for illustrating the features of the present invention, such technical details may be omitted.
It will be understood by those within the relevant art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.
In a first aspect, embodiments of the present invention provide a concentration kettle, as shown in fig. 1, which includes an evaporation section 100, a heating section 200, and a crystallization section 300. One end of the heating unit 200 is connected to the evaporation unit 100, and the other end of the heating unit 200 is connected to the crystallization unit 300; a plurality of heating pipes 210 are arranged in the inner cavity wall of the heating part 200, and the axial directions of the heating pipes 210 and the axial direction of the concentration kettle are in the same direction; the cross-sectional area of the inner cavity wall is 50-70% of the cross-sectional area of the heating part 200; the crystallization part 300 includes a conical tapered portion 320, the tapered portion 320 faces away from the heating part 200, and a discharge port 330 is provided at a top end of the tapered portion 320.
In fact, the concentration tank is a complete sealed whole and is divided into different parts according to the different functions of each part in the process of producing sodium sulfite crystals. The concentration kettle naturally has other auxiliary devices of the reaction kettle used for concentration in the field, and the auxiliary devices are known to those skilled in the art, so that the detailed description is not provided, but the structure of the concentration kettle provided by the application cannot be judged as incomplete. In the case where the lower side is the direction of gravity and the opposite side is the upper side, the evaporation part 100 of the concentration reactor may be regarded as a structural part disposed at the upper part or the top part of the concentration reactor, and the crystallization part 300 may be regarded as a structural part disposed at the lower part or the bottom part of the concentration reactor.
The evaporation part 100 is used for allowing the water vapor in the concentration kettle to be formed and discharged in the part, so that a vapor release channel is arranged on the evaporation part 100, and can be realized by adopting a controllable valve. And the heating zone is a part for heating the reaction solution in the concentration kettle, and a device capable of heating, such as an electric heating device, an induction heating device and the like, is arranged in the heating zone and is specifically arranged according to the actual production requirement. In this application, high-temperature steam is used as a heating medium, a steam input pipe 220 is connected to a certain position of the heating part 200, and the high-temperature steam is continuously input through the steam input pipe 220 to provide heat for the reaction solution in the heating part 200. Because the top of evaporation plant 100 is the outside of concentrated cauldron, the radiating efficiency is higher, and the temperature is lower, probably produces the condensate liquid in the middle of the concentrated cauldron, and these condensate liquid can flow back in the concentrated cauldron, and heating unit 200 is particularly probably flowed back to when, for avoiding producing adverse effect to the heating efficiency of heating unit 200, need in time discharge the concentrated cauldron with these condensate liquid, consequently be provided with steam condensate discharge port in the outside of heating unit 200.
The crystallization part 300 is located at the bottom end of the concentration kettle, sodium sulfite crystals are easily generated at the bottom end of the heating part 200 and the top end of the crystallization part 300, and the crystals naturally sink due to the fact that the density of the crystals is larger than that of the reaction solution, and are continuously gathered in the conical crystallization part 300, and then the sodium sulfite crystals are output through the discharge port 330 arranged at the conical top part 320. Of course, part of the reaction solution in the concentration tank is also discharged from the discharge port 330, and the sodium sulfite crystals can be separated from the reaction solution by the subsequent separation process.
The application provides a mode of concentrated cauldron through set up many heating pipes in the inner chamber of heating portion, evenly cut apart into a plurality of relatively independent tiny inner chambers with the heating portion inner chamber, can make the heating portion obtain more abundant heating, make reaction solution fully flow in concentrated cauldron, and the sodium sulfite crystal of the jumbo size crystalline grain of production then can sink in the crystallization portion, make the sodium sulfite crystal of tiny crystalline grain fully flow and constantly grow up in the heating portion inner cavity, consequently, can produce the bigger sodium sulfite crystal of crystalline grain size, effectively promote the preparation efficiency of big crystalline grain sodium sulfite crystal and reduce the production energy consumption.
Optionally, in certain implementations of the first aspect of the present disclosure, the length of the evaporation portion 100 in the axial direction of the concentration kettle is 15% to 25% of the length of the concentration kettle.
In addition, optionally, the heating part 200 is cylindrical, and the evaporation part 100 is cylindrical; the ratio of the maximum diameter of the inner cavity of the evaporation part 100 to the diameter of the inner cavity of the heating part 200 is 1.5-2: 1. That is, the inner cavity of the evaporation part 100 has a part with a diameter larger than that of the inner cavity of the heating part 200, the evaporation part 100 has a dome with a larger diameter, and the maximum diameter of the inner cavity of the evaporation part 100 is set to be 1.5-2 times of the diameter of the inner cavity of the heating part 200, so that the condensed liquid formed in the evaporation part 100 can flow into the heating part 200 along the wall of the inner cavity of the evaporation part 100 without affecting the reaction solution which is normally heated and evaporated in the concentration kettle.
Optionally, the length of the heating part 200 in the axial direction of the concentration kettle is 35% to 45% of the length of the concentration kettle. In addition, optionally, the crystallization part 300 further includes a cylindrical part 310, one end of the cylindrical part 310 is connected to the heating part 200, and the other end is connected to the conical top part 320; the length of the cylindrical part 310 in the axial direction of the concentration vessel is 20% to 30% of the length of the heating part 200. The crystallization section 300 is not completely conical but includes a cylindrical transition section, enabling sodium sulfite crystals to continue to grow in the section without changing the crystal growth direction due to the change in the shape of the container.
Alternatively, as shown in fig. 2, the heating tube 210 includes several rows of hollow tubes uniformly distributed in the inner cavity of the heating part 200; the included angles of any two adjacent rows of heating pipes 210 are the same, and the distance between two adjacent hollow pipes on each row of heating pipes 210 is the same. The heating pipes 210 are uniformly disposed in the inner cavity of the heating part 200, and divide the inner cavity of the heating part 200 into a plurality of relatively independent sub-spaces, and both ends of the sub-spaces are open and are communicated with each other. Specifically, the pipes in the concentrating tank are hollow vertical pipes, which can be called vertical pipes. The vertical pipes are distributed in the concentrating kettle and are vertical to the ground level, and the distance between every two rows of vertical pipes needs to be evenly distributed, so that the liquid can be uniformly heated, and the number of crystal nuclei generated at the same time is uniform. In plan view it can be seen that the region in which the standpipe is located is 50-70% of the cross-sectional area of the thickening tank, which can be considered as the inner chamber wall of the thickening tank, which is a component with a large wall thickness. That is, the riser is not provided in the middle region of the concentrating tank, and the cross-sectional area of the middle region accounts for about 30% -50% of the cross-sectional area of the concentrating tank. The specific region where the standpipe is disposed can be specifically adjusted according to the concentration of the reaction solution and the temperature of the steam.
Because the heating pipes are uniformly distributed in the wall of the inner cavity of the concentration kettle, the temperature control in the concentration kettle is more accurate and uniform, the temperature of the reaction solution in the inner cavity of the heating part of the concentration kettle and the generated sodium sulfite crystal close to the wall of the inner cavity of the concentration kettle is higher, and the temperature of the central area is lower, so that heat flow is formed, the sodium sulfite reaction solution continuously flows, sodium sulfite grains continuously grow, and the sodium sulfite grains can sink into a crystallization part and further accumulate near a discharge port when exceeding the heat flow thrust in liquid under the conditions of larger grain size and larger mass. Therefore, the size of the produced sodium sulfite crystal grains can be controlled by controlling the cross-sectional area ratio of the middle position area, and the large-grain anhydrous sodium sulfite crystal can be better produced.
Optionally, the concentration kettle further comprises an automatic feeding device 400, and the automatic feeding device 400 is communicated with the evaporation part 100 through a pipeline. The automatic feeding device 400 can realize automatic feeding of materials. Automatic feed device 400 and concentrated cauldron intercommunicate, and under the condition of the material reduction in the concentrated cauldron, automatic feed device 400 detected this condition, put into concentrated cauldron with reaction raw materials to specifically go out to get into through evaporation plant 100. Of course, the connection position of the automatic feeding device 400 and the concentration kettle can be specifically set according to actual needs. Specifically, the automatic feeding device 400 may include a ball 410 and a valve connected to the ball 410, the automatic feeding device 400 is connected to the concentration tank through a connector, when the liquid level in the concentration tank drops, the liquid level in the automatic feeding device 400 drops synchronously, and the position of the ball 410 changes, which is sensed by the valve, and the valve is opened to feed the reaction solution in the automatic feeding device 400 or connected to the automatic feeding device 400 into the concentration tank.
Optionally, in some implementations of embodiments of the first aspect of the present application, the concentration tank further includes a stirring device 500; the stirring device 500 comprises a motor, a connecting rod 510 and a stirring paddle 520; the motor is disposed outside the evaporation part 100 and opposite to the heating part 200, the connecting rod 510 extends into the inner cavity of the crystallization part 300, and the stirring paddle 520 is connected to the top end of the connecting rod 510 and located in the inner cavity of the crystallization part 300.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (8)
1. A concentration kettle is characterized by comprising an evaporation part, a heating part and a crystallization part;
one end of the heating part is communicated with the evaporation part, and the other end of the heating part is communicated with the crystallization part;
a plurality of heating pipes are arranged in the inner cavity wall of the heating part, and the axial directions of the heating pipes and the concentrating kettle are in the same direction; the cross sectional area of the inner cavity wall is 50% -70% of the cross sectional area of the heating part;
the crystallization part comprises a conical top part, the conical top of the conical top part faces back to the heating part, and a discharge hole is formed in the conical top of the conical top part.
2. The concentrating still according to claim 1, wherein the length of the evaporation part in the axial direction of the concentrating still is 15% to 25% of the length of the concentrating still.
3. The concentrating still according to claim 1, wherein the heating part is cylindrical and the evaporation part is cylindrical; the ratio of the maximum diameter of the inner cavity of the evaporation part to the diameter of the inner cavity of the heating part is 1.5-2: 1.
4. The concentrating still according to claim 1, wherein the length of the heating part in the axial direction of the concentrating still is 35% to 45% of the length of the concentrating still.
5. The concentration kettle according to claim 1, wherein the crystallization part further comprises a cylindrical part, one end of the cylindrical part is connected with the heating part, and the other end of the cylindrical part is connected with the conical top part; the length of the cylindrical part in the axial direction of the concentration kettle is 20-30% of the length of the heating part.
6. The concentrator bowl of claim 1, wherein the heating tube comprises a plurality of rows of hollow tubes uniformly distributed in the heating portion lumen; the included angle of any two adjacent rows of heating pipes is the same, and the distance between two adjacent hollow pipes on each row of heating pipes is the same.
7. The concentrating still according to claim 1, further comprising an automatic feeding device, wherein the automatic feeding device is communicated with the evaporation part through a pipeline.
8. The concentrator still of claim 1, further comprising a stirring device; the stirring device comprises a motor, a connecting rod and a stirring paddle; the motor sets up outside the evaporation department and dorsad heating portion one side, the connecting rod extends to in the inner chamber of crystallization portion, the stirring rake is connected the top of connecting rod just is located in the inner chamber of crystallization portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021374069.8U CN212594084U (en) | 2020-07-13 | 2020-07-13 | Concentration kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021374069.8U CN212594084U (en) | 2020-07-13 | 2020-07-13 | Concentration kettle |
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| Publication Number | Publication Date |
|---|---|
| CN212594084U true CN212594084U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021374069.8U Expired - Fee Related CN212594084U (en) | 2020-07-13 | 2020-07-13 | Concentration kettle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672153A (en) * | 2020-07-13 | 2020-09-18 | 黄石加柯环保科技有限公司 | Concentration kettle and preparation method of sodium sulfite crystal |
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2020
- 2020-07-13 CN CN202021374069.8U patent/CN212594084U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672153A (en) * | 2020-07-13 | 2020-09-18 | 黄石加柯环保科技有限公司 | Concentration kettle and preparation method of sodium sulfite crystal |
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