CN213133162U - Purifier of diatomaceous earth is used in vanadium catalyst preparation - Google Patents
Purifier of diatomaceous earth is used in vanadium catalyst preparation Download PDFInfo
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- CN213133162U CN213133162U CN202021512680.2U CN202021512680U CN213133162U CN 213133162 U CN213133162 U CN 213133162U CN 202021512680 U CN202021512680 U CN 202021512680U CN 213133162 U CN213133162 U CN 213133162U
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Abstract
The utility model discloses a diatomite purification device for vanadium catalyst preparation, which comprises a dispersing agent adding groove, an acid adding groove, a reaction kettle, a filtering device, a buffer tank, a first pulping pump, a second pulping pump, a centrifugal pump, a first belt conveyer, a drying device, a second belt conveyer and a storage tank; the dispersing agent adding tank and the acid adding tank are both positioned above the reaction kettle and are both communicated with the top of the reaction kettle; the top of the side wall of the reaction kettle is provided with a feeding port, and the bottom of the reaction kettle is provided with a first discharge port and a second discharge port; the filtering device comprises a connecting pipe, a filter screen is arranged on the inner side of the connecting pipe, the top of the connecting pipe is in threaded connection with the first discharge hole, and the bottom of the connecting pipe is communicated with the top of the buffer tank; the bottom of the buffer tank is communicated with the top of the side wall of the reaction kettle; a second discharge hole at the bottom of the reaction kettle is communicated with a feed inlet of the centrifugal pump; the discharge port of the centrifugal pump, the first belt conveyor, the drying device, the second belt conveyor and the storage tank are connected in sequence. The device can effectively remove impurities such as sand grains, oxides and the like in the diatomite.
Description
Technical Field
The utility model relates to a purifier of diatomaceous earth is used in vanadium catalyst preparation belongs to diatomaceous earth field for the vanadium catalyst preparation.
Background
Diatomite is widely used as a raw material for producing the vanadium catalyst in the production process. The main component of the diatomite is SiO2In addition, certain amount of impurities such as alumina, magnesia, calcium oxide, alumina and the like are contained, because the body shell of the diatomite is of a porous structure, the impurities cover the body shell of the diatomite, and the porosity of the diatomite is influenced by the impurities. In the process of preparing the vanadium catalyst, the active components can not be uniformly distributed on the diatomite due to the existence of impurities, the condition is particularly obvious in the process of preparing the rare earth catalyst, and the rare earth catalyst has higher requirements on the purity and the porosity of the carrier due to higher value.
SUMMERY OF THE UTILITY MODEL
The utility model provides a purifier of diatomaceous earth is used in vanadium catalyst preparation can effectively get rid of impurity such as sand grain and oxide in the diatomaceous earth, has improved SiO2The content increases the specific surface area and pore volume, enhances the permeability and can ensure the uniformity of the distribution of active substances during the preparation of the catalyst; and after acid washing, operations such as water washing and the like are not needed.
For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:
a diatomite purification device for vanadium catalyst preparation comprises a dispersing agent adding tank, an acid adding tank, a reaction kettle, a filtering device, a buffer tank, a first pulping pump, a second pulping pump, a centrifugal pump, a first belt conveyor, a drying device, a second belt conveyor and a storage tank;
the dispersing agent adding groove and the acid adding groove are both positioned at the top of the reaction kettle, the bottom of the dispersing agent adding groove is communicated with the top of the reaction kettle through a first pipeline, the bottom of the acid adding groove is communicated with the top of the reaction kettle through a second pipeline, a first control valve is arranged on the first pipeline, and a second control valve is arranged on the second pipeline;
a first stirring rod is arranged in the reaction kettle, a solid feeding port and a liquid feeding port are arranged at the top of the side wall of the reaction kettle, a first discharging port and a second discharging port are arranged at the bottom of the reaction kettle, and the inner diameter of the first discharging port is larger than that of the second discharging port; the filtering device comprises a connecting pipe, a filter screen arranged along the cross section is arranged on the inner side of the connecting pipe, and the top of the connecting pipe is in threaded connection with the first discharge hole;
the bottom of the connecting pipe is communicated with the top of the buffer tank through a third pipeline, and a third control valve is arranged on the third pipeline; the bottom of the buffer tank is communicated with the top of the side wall of the reaction kettle through a fourth pipeline, a fourth control valve is arranged on the fourth pipeline, and a first pulping pump is arranged on the fourth pipeline;
a second discharge hole at the bottom of the reaction kettle is communicated with a feed inlet of the centrifugal pump through a fifth pipeline, the fifth pipeline is provided with a fifth control valve, and a second pulping pump is arranged on the fifth pipeline;
the discharge port of the centrifugal pump, the first belt conveyor, the drying device, the second belt conveyor and the storage tank are connected in sequence.
By adopting the device, the steps for purifying the diatomite are as follows:
1) adding diatomite from a solid feeding port of the reaction kettle, adding hot water with the temperature of about 80 ℃ from a liquid feeding port, repeatedly stirring, opening a third control valve when the diatomite is in a flowing state, filtering the material by a filter screen on a filtering device, then enabling the material to flow out of a first discharge port, entering a buffer tank along a third pipeline, and leaving impurities such as gravel in the diatomite on the filter screen;
2) the connecting pipe is disassembled, impurities such as gravel and the like on the filter screen are removed, and then the connecting pipe is assembled;
3) closing the third control valve, opening the first pulping pump and the fourth control valve, circularly pumping the materials in the buffer tank into the reaction kettle, and closing the first pulping pump and the fourth control valve after the pumping is finished;
4) continuously adding hot water with excess amount at about 80 ℃ from a liquid feeding port, uniformly stirring to enable diatomite to be in a flowing state, adding sodium pyrophosphate solution with the mass concentration of 1.5-3.5% into a reaction kettle from a dispersing agent feeding tank, stirring to be uniform, adding sulfuric acid with the mass concentration of 20-30% into the reaction kettle from an acid adding tank, keeping the temperature at about 80 ℃, stirring for half an hour to generate sulfate which is easy to dissolve in water, (because the sulfate in the diatomite is not required to be removed for preparing a vanadium catalyst), pumping diatomite mud in the reaction kettle into a horizontal chamber centrifuge through a second slurry pump, spin-drying the water on the surface of the diatomite mud, conveying the diatomite which is spin-dried through a first belt conveyor to a drying device, drying at about 100 ℃, and conveying the diatomite to a storage tank through a second belt.
Because the acid for preparing the vanadium catalyst is sulfuric acid, the sulfuric acid remained in the diatomite does not influence the preparation of the vanadium catalyst when the diatomite is treated.
In order to improve the dispersion and stability of stirring, the first stirring rod is of an inverted umbrella-shaped structure.
As an implementation scheme of the application, the first stirring rod comprises a rod body and more than two stirring blades, the stirring blades are of the same structure, the stirring blades are of C-shaped structures with upward openings, all the stirring blades are mutually crossed and are connected into a whole at a central point to form a connecting point, and the bottom of the rod body is connected with the connecting point to form an inverted umbrella-shaped structure.
In order to further improve the stability of the stirring rod, the two ends of each stirring blade are connected with the side wall of the rod body through reinforcing rods.
In order to facilitate the circulation of the materials and improve the dispersibility in the pickling stage, a second stirring rod is arranged in the buffer tank.
The structure of the second stirring rod can be the same as that of the first stirring rod. Thus, even if the stirring device is assembled with equipment, the stirring and the dispersion are convenient.
In order to facilitate accurate control of the addition amount and the addition speed of the dispersing agent and the sulfuric acid, a first flowmeter is arranged on the first pipeline; the second pipeline is provided with a second flowmeter.
In order to control the outflow speed of the materials conveniently, a third flowmeter is arranged on the third pipeline; and a fourth flowmeter is arranged on the fifth pipeline.
In order to save space, the diatomite purification device for vanadium catalyst preparation further comprises a support platform, wherein the support platform comprises a main support and three layers of support platforms arranged on the main support, the three layers of support platforms are a first support platform, a second support platform and a third support platform from bottom to top in sequence, the third support platform is provided with a first mounting hole and a second mounting hole, the bottom of a dispersing agent adding groove penetrates out of the first mounting hole, and the side wall of the dispersing agent adding groove is mounted on the first mounting hole through a mounting flange; the bottom of the acid adding groove penetrates out of the second mounting hole, and the side wall of the acid adding groove is mounted on the second mounting hole through a mounting flange; the reaction kettle is arranged on a second support table through a first support, and a through hole for the third pipeline and the fourth pipeline to pass through is formed in the second support table; buffer tank, first beating pump, second beating pump, centrifugal pump, first belt conveyer, drying device, second belt conveyer and stock chest all establish on first supporting bench, and the buffer tank passes through the installation of second support.
In order to facilitate maintenance and operation, a first channel ladder and a second channel ladder are arranged on the support platform; one end of the first channel ladder is connected with the first supporting platform, and the other end of the first channel ladder is connected with the second supporting platform; one end of the second channel ladder is connected with the second supporting platform, and the other end of the second channel ladder is connected with the third supporting platform. That is, the first channel ladder may be routed from the first support table to the second support table, and the second channel ladder may be routed from the second support table to the third support table.
The technology not mentioned in the present invention refers to the prior art.
The utility model discloses vanadium catalyst preparation is with purifier of diatomaceous earth can effectively get rid of impurity such as sand grain and oxide in the diatomaceous earth, has improved SiO2The content increases the specific surface area and the pore volume, enhances the permeability and can ensure the uniformity of the distribution of active substances during the preparation of the catalyst; after acid washing, operations such as water washing and the like are not needed, the operation is simple, and the cost is low; furthermore, the structure of the stirring rod is improved, so that the dispersity and the stability of stirring are improved; through each equipment of rational overall arrangement, saved the space, practiced thrift the cost.
Drawings
FIG. 1 is a schematic structural view of a diatomite purification device for vanadium catalyst preparation according to the present invention;
fig. 2 is a schematic structural view of a first stirring rod in embodiment 2 of the present invention;
in the figure, 1 is a dispersing agent feeding groove, 2 is an acid feeding groove, 3 is a reaction kettle 4 which is a filtering device, 5 which is a buffer tank, 6 which is a first pulping pump, 7 which is a second pulping pump, 8 which is a centrifugal pump, 9 which is a first belt conveyer, 10 which is a drying device, 11 which is a second belt conveyer, 12 which is a storage tank, 13 which is a first supporting platform, 14 which is a second supporting platform, 15 which is a third supporting platform, 16 which is a first channel ladder, 17 which is a second channel ladder, 18 which is a first support, 19 which is a second support, 20 which is a rod body, 21 which is a stirring blade, and 22 which is a reinforcing rod.
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, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be considered as limiting the present application.
Example 1
As shown in fig. 1, a diatomite purification device for vanadium catalyst preparation comprises a dispersant adding tank, an acid adding tank, a reaction kettle, a filtering device, a buffer tank, a first pulping pump, a second pulping pump, a centrifugal pump, a first belt conveyor, a drying device, a second belt conveyor and a storage tank;
the dispersing agent adding groove and the acid adding groove are both positioned at the top of the reaction kettle, the bottom of the dispersing agent adding groove is communicated with the top of the reaction kettle through a first pipeline, the bottom of the acid adding groove is communicated with the top of the reaction kettle through a second pipeline, a first control valve is arranged on the first pipeline, and a second control valve is arranged on the second pipeline;
a first stirring rod is arranged in the reaction kettle, a solid feeding port and a liquid feeding port are arranged at the top of the side wall of the reaction kettle, a first discharging port and a second discharging port are arranged at the bottom of the reaction kettle, and the inner diameter of the first discharging port is larger than that of the second discharging port; the filtering device comprises a connecting pipe, a filter screen arranged along the cross section is arranged on the inner side of the connecting pipe, and the top of the connecting pipe is in threaded connection with the first discharge hole;
the bottom of the connecting pipe is communicated with the top of the buffer tank through a third pipeline, and a third control valve is arranged on the third pipeline; the bottom of the buffer tank is communicated with the top of the side wall of the reaction kettle through a fourth pipeline, a fourth control valve is arranged on the fourth pipeline, and a first pulping pump is arranged on the fourth pipeline;
a second discharge hole at the bottom of the reaction kettle is communicated with a feed inlet of the centrifugal pump through a fifth pipeline, the fifth pipeline is provided with a fifth control valve, and a second pulping pump is arranged on the fifth pipeline;
the discharge port of the centrifugal pump, the first belt conveyor, the drying device, the second belt conveyor and the storage tank are connected in sequence.
By adopting the device, the steps for purifying the diatomite are as follows:
1) adding diatomite from a solid feeding port of the reaction kettle, adding hot water with the temperature of about 80 ℃ from a liquid feeding port, repeatedly stirring, opening a third control valve when the diatomite is in a flowing state, filtering the material by a filter screen on a filtering device, then enabling the material to flow out of a first discharge port, entering a buffer tank along a third pipeline, and leaving impurities such as gravel in the diatomite on the filter screen;
2) the connecting pipe is disassembled, impurities such as gravel and the like on the filter screen are removed, and then the connecting pipe is assembled;
3) closing the third control valve, opening the first pulping pump and the fourth control valve, circularly pumping the materials in the buffer tank into the reaction kettle, and closing the first pulping pump and the fourth control valve after the pumping is finished;
4) continuously adding hot water with excess amount of about 80 ℃ from a liquid feeding port, uniformly stirring to enable diatomite to be in a flowing state, adding 3% of sodium pyrophosphate solution (the amount of the sodium pyrophosphate solution is 10% of the mass of the diatomite) into a reaction kettle from a dispersing agent feeding tank, uniformly stirring, adding 25% of sulfuric acid (the amount of the sulfuric acid solution is 8% of the mass of the diatomite) into the reaction kettle from an acid adding tank, keeping the temperature at about 80 ℃ for stirring for half an hour to generate sulfate which is easy to dissolve in water (sulfate in the diatomite does not need to be removed because of the diatomite prepared for preparing a vanadium catalyst), pumping the diatomite mud in the reaction kettle into a horizontal chamber centrifuge through a second pump, drying the water on the surface of the diatomite by spin-drying, conveying the dried diatomite to a drying device through a first belt conveyor, drying at about 100 ℃, and then conveyed to a storage tank through a second belt. Practice shows that when the purified diatomite is used for preparing the vanadium catalyst, active components (including rare earth metals) can be uniformly attached, and the uniformity reaches more than 98.6%.
Example 2
On the basis of the embodiment 1, the following improvements are further made: in order to improve the dispersibility and stability of stirring, the first stirring rod is of an inverted umbrella-shaped structure, the first stirring rod comprises a rod body and two stirring blades, the two stirring blades are of the same structure, the stirring blades are of a C-shaped structure with upward openings, all the stirring blades are mutually crossed and are connected into a whole at a central point to form a connecting point, and the bottom of the rod body is connected with the connecting point to form the inverted umbrella-shaped structure. In order to further improve the stability of the stirring rod, the two ends of each stirring blade are connected with the side wall of the rod body through reinforcing rods. Compared with the existing stirring rod, the stirring rod with the structure has the advantages that the service life is prolonged by more than 3 times, and the dispersibility is obviously improved.
Example 3
On the basis of the embodiment 2, the following improvements are further made: in order to facilitate the circulation of the materials to enter and exit and improve the dispersibility in the pickling stage, a second stirring rod is arranged in the buffer tank, and the structure of the second stirring rod is the same as that of the first stirring rod.
Example 4
On the basis of the embodiment 3, the following improvements are further made: in order to facilitate accurate control of the addition amount and the addition speed of the dispersing agent and the sulfuric acid, a first flowmeter is arranged on the first pipeline; the second pipeline is provided with a second flowmeter. In order to control the outflow speed of the materials conveniently, a third flowmeter is arranged on the third pipeline; and a fourth flowmeter is arranged on the fifth pipeline.
Example 5
On the basis of the embodiment 4, the following improvements are further made: in order to save space, the diatomite purification device for vanadium catalyst preparation further comprises a support platform, wherein the support platform comprises a main support and three layers of support platforms arranged on the main support, the three layers of support platforms are a first support platform, a second support platform and a third support platform from bottom to top in sequence, the third support platform is provided with a first mounting hole and a second mounting hole, the bottom of a dispersing agent adding groove penetrates out of the first mounting hole, and the side wall of the dispersing agent adding groove is mounted on the first mounting hole through a mounting flange; the bottom of the acid adding groove penetrates out of the second mounting hole, and the side wall of the acid adding groove is mounted on the second mounting hole through a mounting flange; the reaction kettle is arranged on a second support table through a first support, and a through hole for the third pipeline and the fourth pipeline to pass through is formed in the second support table; buffer tank, first beating pump, second beating pump, centrifugal pump, first belt conveyer, drying device, second belt conveyer and stock chest all establish on first supporting bench, and the buffer tank passes through the installation of second support. In order to facilitate maintenance and operation, a first channel ladder and a second channel ladder are arranged on the support platform; one end of the first channel ladder is connected with the first supporting platform, and the other end of the first channel ladder is connected with the second supporting platform; one end of the second channel ladder is connected with the second supporting platform, and the other end of the second channel ladder is connected with the third supporting platform. That is, the first channel ladder may be routed from the first support table to the second support table, and the second channel ladder may be routed from the second support table to the third support table.
Practice proves that the diatomite purification device for preparing the vanadium catalyst can effectively remove sand particles, oxides and other impurities in the diatomite and improve SiO2The content increases the specific surface area and the pore volume, enhances the permeability and can ensure the uniformity of the distribution of active substances during the preparation of the catalyst; after acid washing, operations such as water washing and the like are not needed; furthermore, the structure of the stirring rod is improved, so that the dispersity and the stability of stirring are improved; through each equipment of rational overall arrangement, saved the space, practiced thrift the cost.
Claims (10)
1. The utility model provides a purifier of diatomaceous earth is used in vanadium catalyst preparation which characterized in that: the device comprises a dispersing agent feeding tank, an acid feeding tank, a reaction kettle, a filtering device, a buffer tank, a first pulping pump, a second pulping pump, a centrifugal pump, a first belt conveyor, a drying device, a second belt conveyor and a storage tank;
the dispersing agent adding groove and the acid adding groove are both positioned at the top of the reaction kettle, the bottom of the dispersing agent adding groove is communicated with the top of the reaction kettle through a first pipeline, the bottom of the acid adding groove is communicated with the top of the reaction kettle through a second pipeline, a first control valve is arranged on the first pipeline, and a second control valve is arranged on the second pipeline;
a first stirring rod is arranged in the reaction kettle, a solid feeding port and a liquid feeding port are arranged at the top of the side wall of the reaction kettle, a first discharging port and a second discharging port are arranged at the bottom of the reaction kettle, and the inner diameter of the first discharging port is larger than that of the second discharging port; the filtering device comprises a connecting pipe, a filter screen arranged along the cross section is arranged on the inner side of the connecting pipe, and the top of the connecting pipe is in threaded connection with the first discharge hole;
the bottom of the connecting pipe is communicated with the top of the buffer tank through a third pipeline, and a third control valve is arranged on the third pipeline; the bottom of the buffer tank is communicated with the top of the side wall of the reaction kettle through a fourth pipeline, a fourth control valve is arranged on the fourth pipeline, and a first pulping pump is arranged on the fourth pipeline;
a second discharge hole at the bottom of the reaction kettle is communicated with a feed inlet of the centrifugal pump through a fifth pipeline, the fifth pipeline is provided with a fifth control valve, and a second pulping pump is arranged on the fifth pipeline;
the discharge port of the centrifugal pump, the first belt conveyor, the drying device, the second belt conveyor and the storage tank are connected in sequence.
2. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to claim 1, wherein: the first stirring rod is of an inverted umbrella-shaped structure.
3. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to claim 2, wherein: the first stirring rod comprises a rod body and more than two stirring blades, the stirring blades are of C-shaped structures with upward openings, all the stirring blades are mutually crossed and connected at the central point to form a connecting point integrally, and the bottom of the rod body is connected with the connecting point to form an inverted umbrella-shaped structure.
4. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to claim 3, wherein: the two ends of each stirring blade are connected with the side wall of the rod body through reinforcing rods.
5. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to any one of claims 1 to 4, wherein: a second stirring rod is arranged in the buffer tank.
6. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to any one of claims 1 to 4, wherein: the first stirring rod and the second stirring rod have the same structure.
7. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to any one of claims 1 to 4, wherein: a first flowmeter is arranged on the first pipeline; the second pipeline is provided with a second flowmeter.
8. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to any one of claims 1 to 4, wherein: a third flow meter is arranged on the third pipeline; and a fourth flowmeter is arranged on the fifth pipeline.
9. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to any one of claims 1 to 4, wherein: the dispersing agent feeding groove is characterized by further comprising a support table, wherein the support table comprises a main support and three layers of support tables arranged on the main support, the three layers of support tables are a first support table, a second support table and a third support table from bottom to top in sequence, a first mounting hole and a second mounting hole are formed in the third support table, the bottom of the dispersing agent feeding groove penetrates out of the first mounting hole, and the side wall of the dispersing agent feeding groove is mounted on the first mounting hole through a mounting flange; the bottom of the acid adding groove penetrates out of the second mounting hole, and the side wall of the acid adding groove is mounted on the second mounting hole through a mounting flange; the reaction kettle is arranged on a second support table through a first support, and a through hole for the third pipeline and the fourth pipeline to pass through is formed in the second support table; buffer tank, first beating pump, second beating pump, centrifugal pump, first belt conveyer, drying device, second belt conveyer and stock chest all establish on first supporting bench.
10. The purification apparatus of diatomaceous earth for vanadium catalyst preparation according to claim 9, wherein: a first channel ladder and a second channel ladder are arranged on the support platform; one end of the first channel ladder is connected with the first supporting platform, and the other end of the first channel ladder is connected with the second supporting platform; one end of the second channel ladder is connected with the second supporting platform, and the other end of the second channel ladder is connected with the third supporting platform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021512680.2U CN213133162U (en) | 2020-07-28 | 2020-07-28 | Purifier of diatomaceous earth is used in vanadium catalyst preparation |
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| CN202021512680.2U CN213133162U (en) | 2020-07-28 | 2020-07-28 | Purifier of diatomaceous earth is used in vanadium catalyst preparation |
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