CN213254426U - Stirring rod for vanadium catalyst and reaction kettle comprising same - Google Patents
Stirring rod for vanadium catalyst and reaction kettle comprising same Download PDFInfo
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- CN213254426U CN213254426U CN202021897143.4U CN202021897143U CN213254426U CN 213254426 U CN213254426 U CN 213254426U CN 202021897143 U CN202021897143 U CN 202021897143U CN 213254426 U CN213254426 U CN 213254426U
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Abstract
The utility model discloses a stirring rod for vanadium catalyst and a reaction kettle containing the same, the stirring rod for vanadium catalyst comprises a rod body, a first stirring blade and a second stirring blade; the first stirring blade comprises pocket bottom rods and connecting rods, the pocket bottom rods are of a C-shaped structure with an upward opening, the bottom of the rod body is connected with the center of the bottom of the inner side of the pocket bottom rods, more than four connecting rods are provided, the number of the connecting rods is even, the connecting rods are oppositely arranged on two sides of the rod body in pairs, one end of each connecting rod is connected with the side wall of the rod body, and the other end of each connecting rod is connected with the inner side wall of the pocket bottom rod; the second stirring blade is of a spiral structure and is arranged on the rod body above the first stirring blade. The utility model improves the stirring efficiency, reduces the accumulation of materials and improves the reaction efficiency by improving the structure of the stirring rod; through the improvement of the reaction kettle structure, the stirring efficiency is improved, the path of steam is prolonged, the utilization rate of steam heat is improved, and the energy consumption is reduced; further, the flow of the edge material is better enhanced.
Description
Technical Field
The utility model relates to a stirring rod for vanadium catalyst and contain its reation kettle belongs to vanadium catalyst preparation field.
Background
Sulfuric acid is an important chemical raw material and occupies a very important position in national economy. The vanadium catalyst used in the production of sulfuric acid is produced by taking diatomite as a carrier. When the vanadium catalyst is prepared, firstly, KOH solution and V are required to be firstly mixed2O5Reacting under the condition of stewing to prepare KVO3Mixing the mixed solution with KOH solution, namely vanadium water for short, then mixing the vanadium water, kieselguhr, active components, an auxiliary agent, sulfuric acid and the like for reaction, and finally extruding, calcining, sieving and other procedures on the materials obtained by the reaction to obtain the vanadium catalyst.
The preparation of the vanadium water is completed in a reaction kettle, and the existing stirring device of the reaction kettle only has a single stirring blade, so that the stirring is insufficient, the particle accumulation is easy to form, and the efficiency of the reaction kettle is influenced; and the existing heating steam has short path, poor utilization rate of steam heat and high energy consumption.
SUMMERY OF THE UTILITY MODEL
The utility model provides a stirring rod for vanadium catalyst and a reaction kettle containing the stirring rod, which improves the stirring efficiency, reduces the accumulation of materials and improves the reaction efficiency by improving the structure of the stirring rod; through the improvement to the reation kettle structure, improved stirring efficiency, prolonged the route of steam, improved the thermal utilization ratio of steam, reduced the energy consumption.
For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:
a stirring rod for a vanadium catalyst comprises a rod body, a first stirring blade and a second stirring blade; the first stirring blade comprises pocket bottom rods and connecting rods, the pocket bottom rods are of a C-shaped structure with an upward opening, the bottom of the rod body is connected with the center of the bottom of the inner side of the pocket bottom rods, more than four connecting rods are provided, the number of the connecting rods is even, the connecting rods are oppositely arranged on two sides of the rod body in pairs, one end of each connecting rod is connected with the side wall of the rod body, and the other end of each connecting rod is connected with the inner side wall of the pocket bottom rod; the second stirring blade is of a spiral structure and is arranged on the rod body above the first stirring blade.
The first stirring blade can drive the materials at the bottom of the reaction kettle to be stirred and mixed, so that the accumulation of the materials at the bottom is avoided; the setting of second stirring leaf can drive the stirring of material on the height and mix, and then has improved stirring efficiency, has reduced piling up of material, has improved the sufficiency of reaction efficiency and reaction.
The arrangement of the C-shaped pocket bottom rod with the upward opening can drive the stirring and mixing of materials at the bottom of the reaction kettle and avoid scratching the bottom of the reaction kettle; the arrangement of the connecting rod enhances the structural stability of the first stirring blade on one hand, and can drive more materials to rotate and mix together on the other hand, so that the stirring effect is enhanced; the second stirring blades of the spiral structure improve the stirring continuity of the materials in the height direction, so that the materials can be more fully rotated and mixed.
In order to further improve the stirring effect, the connecting rods positioned on the same side of the rod body are different in height, and the inclination angles of the two adjacent connecting rods on the same side of the rod body are different. This results in better agitation of the material.
As one of the realization schemes, two sides of the bar body are respectively provided with three connecting rods; the connecting rod of the same side of the stick body is sequentially provided with a first connecting rod, a second connecting rod and a third connecting rod from top to bottom, the first connecting rod is horizontally arranged, the second connecting rod inclines upwards from the stick body, and the third connecting rod inclines downwards from the stick body. Preferably, the second connecting rod inclines upwards by 15-25 degrees from the rod body, and the third connecting rod inclines downwards by 15-25 degrees from the rod body. The above-mentioned "from the stick" means a direction from one end connected to the stick to the other end, the upward inclination means that the end connected to the stick is lower than the other end, and the downward inclination means that the end connected to the stick is higher than the other end. The aforementioned angles of inclination upward or downward are all relative to the horizontal plane.
A reaction kettle for vanadium catalyst comprises the stirring rod for vanadium catalyst, a reaction kettle body, an outer shell and a discharge pipe, wherein the reaction kettle body comprises a kettle body and a kettle cover covering the kettle body; the outer shell is arranged on the side wall and the periphery of the bottom of the kettle body, and a closed medium cavity is formed between the outer shell and the kettle body; the outer shell and the kettle body in the medium cavity are provided with flow slowing plates which are alternately arranged from top to bottom, one end of each flow slowing plate is a free end, the other end of each flow slowing plate is a connecting end, the connecting ends of the flow slowing plates are arranged on the outer shell or the kettle body, and the interval between the free ends of the flow slowing plates and the kettle body or the outer shell is larger than zero; the discharging pipe is vertically arranged at the bottom of the outer shell, one end of the discharging pipe is a feeding end, the other end of the discharging pipe is a discharging end, the feeding end of the discharging pipe extends into the kettle body from the bottom of the outer shell, the discharging end of the discharging pipe is positioned on the outer side of the outer shell, and a control valve is arranged on the discharging pipe positioned on the outer side of the outer shell; the stirring rod is vertically arranged in the kettle body, and the top of the stirring rod penetrates out of the top of the kettle cover and is driven to rotate by the motor; the kettle cover is provided with a feed inlet and an exhaust outlet.
When the steam heating kettle is used, steam for heating enters the medium cavity from the steam inlet and flows out from the steam outlet, so that materials in the kettle body are heated, water formed by steam condensation flows out from the condensed water outlet, and the steam needs to pass through all the flow buffering plates on the way from the steam inlet to the steam outlet, so that the path of the steam is prolonged, the utilization rate of steam heat is improved, and the energy consumption is reduced; the materials react in the kettle body under the stirring of the stirring rod, and the improvement of the structure of the stirring rod enables the materials at all heights in the kettle body to be stirred and mixed, thereby improving the stirring efficiency and the stirring effect; after the reaction is finished, the material is discharged from the discharge pipe, and the discharge pipe is arranged at the bottom of the kettle body, so that the residue of the material in the kettle body is reduced.
In order to further improve the mixing effect of materials during reaction, a vertically-installed shear plate is arranged on the inner side wall of the kettle body, and the inclined direction of the shear plate is the same as the rotating direction of the stirring rod. Therefore, the flow of the edge materials can be better driven, the stirring dead angle is reduced and avoided, rotational flow is formed between every two adjacent shearing plates, and the flow of the edge materials is enhanced.
In order to avoid the gathering of comdenstion water, further improve steam heat's utilization ratio simultaneously, the gentle flow board is from the link, the downward sloping. Further preferably, the downward inclination angle of the slow flow plate is 30-60 degrees. The inclination angle is an inclination angle relative to a horizontal position.
In order to facilitate installation, the periphery of the outer shell is provided with an installation flange.
The technology not mentioned in the present invention refers to the prior art.
The utility model is used for the stirring rod of vanadium catalyst, the setting of the C-shaped pocket bottom rod with the upward opening can drive the stirring and mixing of the materials at the bottom of the reaction kettle and can avoid scratching the bottom of the reaction kettle; the arrangement of the connecting rod enhances the structural stability of the first stirring blade on one hand, and can drive more materials to rotate and mix together on the other hand, so that the stirring effect is enhanced; the arrangement of the second stirring blade with the spiral structure improves the stirring continuity of the materials in the height direction, so that the materials can be more fully rotated and mixed; the arrangement of the flow buffering plate in the reaction kettle prolongs the path of steam, improves the utilization rate of steam heat and reduces energy consumption; furthermore, the flow of edge materials is better enhanced through the arrangement of the shear plate in the reaction kettle.
Drawings
FIG. 1 is a schematic structural diagram of a stirring rod for a vanadium catalyst in example 2 of the present invention;
FIG. 2 is a schematic structural diagram of a reaction kettle for vanadium catalyst in example 4 of the present invention;
FIG. 3 is a schematic structural diagram of a reaction kettle for vanadium catalyst in example 5 of the present invention;
fig. 4 is a top view of a shear plate according to embodiment 5 of the present invention;
in the figure, 1 is a stirring rod, 11 is a rod body, 12 is a first stirring blade, 121 is a bottom rod, 122 is a connecting rod, 13 is a second stirring blade, 2 is a reaction kettle body, 21 is a feed inlet, 22 is an exhaust port, 3 is an outer shell, 31 is a mounting flange, 4 is a discharge pipe, 41 is a control valve, 5 is a medium cavity, 51 is a steam inlet, 52 is a steam outlet, 53 is a condensed water outlet, 54 is a slow flow plate, 6 is a motor, 7 is a speed reducer, 8 is a shear plate, and 9 is a stirring direction.
Detailed Description
For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.
The terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used herein in an orientation that is based on the orientation or positional relationship shown in the drawings or in use, and are used for convenience in describing the present application, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Example 1
As shown in fig. 1, a stirring rod for a vanadium catalyst comprises a rod body, a first stirring blade and a second stirring blade; the first stirring blade comprises pocket bottom rods and connecting rods, the pocket bottom rods are of a C-shaped structure with an upward opening, the bottom of the rod body is connected with the center of the bottom of the inner side of the pocket bottom rods, more than four connecting rods are provided, the number of the connecting rods is even, the connecting rods are oppositely arranged on two sides of the rod body in pairs, one end of each connecting rod is connected with the side wall of the rod body, and the other end of each connecting rod is connected with the inner side wall of the pocket bottom rod; the second stirring blade is of a spiral structure and is arranged on the rod body above the first stirring blade.
The arrangement of the C-shaped pocket bottom rod with the upward opening can drive the stirring and mixing of materials at the bottom of the reaction kettle and avoid scratching the bottom of the reaction kettle; the arrangement of the connecting rod enhances the structural stability of the first stirring blade on one hand, and can drive more materials to rotate and mix together on the other hand, so that the stirring effect is enhanced; the spiral structure second stirring leaf has improved the continuity of material direction of height stirring, makes the material rotate the mixture more fully, and then has improved stirring efficiency, has reduced piling up of material, has improved the sufficiency of reaction efficiency and reaction.
Example 2
On the basis of the embodiment 1, the following improvements are further made: as shown in fig. 1, in order to further improve the stirring effect, the connecting rods located on the same side of the bar body have different heights, and the two adjacent connecting rods on the same side of the bar body have different inclination angles. This results in better agitation of the material. As shown in fig. 1, three connecting rods are respectively arranged on two sides of the bar body; the connecting rod of the same side of the rod body is sequentially provided with a first connecting rod, a second connecting rod and a third connecting rod from top to bottom, the first connecting rod is horizontally arranged, the second connecting rod is inclined upwards by 20 degrees from the rod body, and the third connecting rod is inclined downwards by 20 degrees from the rod body.
Example 3
As shown in fig. 2, a reaction kettle for vanadium catalyst comprises the stirring rod for vanadium catalyst and the reaction kettle body in the embodiment 1-2, and further comprises an outer shell and a discharge pipe, wherein the reaction kettle body comprises a kettle body and a kettle cover covering the kettle body; the outer shell is arranged on the side wall and the periphery of the bottom of the kettle body, and a closed medium cavity is formed between the outer shell and the kettle body; the outer shell and the kettle body in the medium cavity are provided with flow slowing plates which are alternately arranged from top to bottom, one end of each flow slowing plate is a free end, the other end of each flow slowing plate is a connecting end, the connecting ends of the flow slowing plates are arranged on the outer shell or the kettle body, the interval between the free ends of the flow slowing plates and the kettle body or the outer shell is larger than zero, namely the two adjacent flow slowing plates are arranged, one flow slowing plate is connected to the kettle body, the other flow slowing plate is connected to the outer shell, the interval between the free ends of the flow slowing plates connected to the kettle body and the outer shell is larger than zero, and the interval between the free ends of the; the discharging pipe is vertically arranged at the bottom of the outer shell, one end of the discharging pipe is a feeding end, the other end of the discharging pipe is a discharging end, the feeding end of the discharging pipe extends into the kettle body from the bottom of the outer shell, the discharging end of the discharging pipe is positioned on the outer side of the outer shell, and a control valve is arranged on the discharging pipe positioned on the outer side of the outer shell; the stirring rod is vertically arranged in the kettle body, and the top of the stirring rod penetrates out of the top of the kettle cover and is driven to rotate by the motor; the kettle cover is provided with a feed inlet and an exhaust outlet.
When the steam heating kettle is used, steam for heating enters the medium cavity from the steam inlet and flows out from the steam outlet, so that materials in the kettle body are heated, water formed by steam condensation flows out from the condensed water outlet, and the steam needs to pass through all the flow buffering plates on the way from the steam inlet to the steam outlet, so that the path of the steam is prolonged, the utilization rate of steam heat is improved, and the energy consumption is reduced; the materials react in the kettle body under the stirring of the stirring rod, and the improvement of the structure of the stirring rod enables the materials at all heights in the kettle body to be stirred and mixed, thereby improving the stirring efficiency and the stirring effect; after the reaction is finished, the material is discharged from the discharge pipe, and the discharge pipe is arranged at the bottom of the kettle body, so that the residue of the material in the kettle body is reduced.
Example 4
On the basis of the embodiment 3, the following improvements are further made: as shown in fig. 2, in order to avoid the accumulation of the condensed water and further improve the utilization rate of the steam heat, the slow flow plate is inclined downwards from the connecting end. Further preferably, the slow flow plate is inclined downward at an angle of 45 °. In order to facilitate installation, the periphery of the outer shell is provided with an installation flange.
Example 5
On the basis of the embodiment 4, the following improvements are further made: as shown in fig. 3-4, in order to further improve the mixing effect of the materials during the reaction, a vertically installed shear plate is arranged on the inner side wall of the kettle body, and the inclined direction of the shear plate is the same as the rotating direction of the stirring rod. Therefore, the flow of the edge materials can be better driven, the stirring dead angle is reduced and avoided, rotational flow is formed between every two adjacent shearing plates, and the flow of the edge materials is enhanced.
Practice shows that the reaction kettles of the above examples improve the utilization rate of the heat of the steam by more than 25%; the uniformity of the obtained reaction materials reaches more than 99.6 percent, so that the materials can react more fully, and the product quality is improved.
Claims (9)
1. A stirring rod for a vanadium catalyst, which is characterized in that: comprises a rod body, a first stirring blade and a second stirring blade; the first stirring blade comprises pocket bottom rods and connecting rods, the pocket bottom rods are of a C-shaped structure with an upward opening, the bottom of the rod body is connected with the center of the bottom of the inner side of the pocket bottom rods, more than four connecting rods are provided, the number of the connecting rods is even, the connecting rods are oppositely arranged on two sides of the rod body in pairs, one end of each connecting rod is connected with the side wall of the rod body, and the other end of each connecting rod is connected with the inner side wall of the pocket bottom rod; the second stirring blade is of a spiral structure and is arranged on the rod body above the first stirring blade.
2. The stirring rod for a vanadium catalyst according to claim 1, wherein: the connecting rods positioned on the same side of the rod body are different in height, and the inclination angles of the two adjacent connecting rods on the same side of the rod body are different.
3. The stirring rod for a vanadium catalyst according to claim 2, wherein: three connecting rods are respectively arranged on two sides of the bar body; the connecting rod of the same side of the stick body is sequentially provided with a first connecting rod, a second connecting rod and a third connecting rod from top to bottom, the first connecting rod is horizontally arranged, the second connecting rod inclines upwards from the stick body, and the third connecting rod inclines downwards from the stick body.
4. The stirring rod for a vanadium catalyst according to claim 3, wherein: the second connecting rod inclines upwards for 15-25 degrees from the rod body, and the third connecting rod inclines downwards for 15-25 degrees from the rod body.
5. A reaction tank for a vanadium catalyst comprising the stirring rod for a vanadium catalyst and the reaction tank body according to any one of claims 1 to 4, characterized in that: the reaction kettle body comprises a kettle body and a kettle cover covered on the kettle body; the outer shell is arranged on the side wall and the periphery of the bottom of the kettle body, and a closed medium cavity is formed between the outer shell and the kettle body; the outer shell and the kettle body in the medium cavity are provided with flow slowing plates which are alternately arranged from top to bottom, one end of each flow slowing plate is a free end, the other end of each flow slowing plate is a connecting end, the connecting ends of the flow slowing plates are arranged on the outer shell or the kettle body, and the interval between the free ends of the flow slowing plates and the kettle body or the outer shell is larger than zero; the discharging pipe is vertically arranged at the bottom of the outer shell, one end of the discharging pipe is a feeding end, the other end of the discharging pipe is a discharging end, the feeding end of the discharging pipe extends into the kettle body from the bottom of the outer shell, and a control valve is arranged on the discharging pipe positioned on the outer side of the outer shell; the stirring rod is vertically arranged in the kettle body, and the top of the stirring rod penetrates out of the top of the kettle cover and is driven to rotate by the motor; the kettle cover is provided with a feed inlet and an exhaust outlet.
6. The reactor for vanadium catalysts according to claim 5, wherein: and a vertically installed shear plate is arranged on the inner side wall of the kettle body, and the inclined direction of the shear plate is the same as the rotating direction of the stirring rod.
7. The reaction kettle for the vanadium catalyst according to claim 5 or 6, wherein: the current-buffering plate is inclined downwards from the connecting end.
8. The reactor for vanadium catalysts according to claim 7, wherein: the downward inclination angle of the buffer plate is 30-60 degrees.
9. The reaction kettle for the vanadium catalyst according to claim 5 or 6, wherein: and a mounting flange is arranged at the periphery of the outer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021897143.4U CN213254426U (en) | 2020-09-03 | 2020-09-03 | Stirring rod for vanadium catalyst and reaction kettle comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021897143.4U CN213254426U (en) | 2020-09-03 | 2020-09-03 | Stirring rod for vanadium catalyst and reaction kettle comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213254426U true CN213254426U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021897143.4U Active CN213254426U (en) | 2020-09-03 | 2020-09-03 | Stirring rod for vanadium catalyst and reaction kettle comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213254426U (en) |
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2020
- 2020-09-03 CN CN202021897143.4U patent/CN213254426U/en active Active
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