Storage and transportation system for kaolin

Abstract

The utility model provides a storage and transportation system for kaolin, belongs to the technical field of kaolin storage, and solves the problems that in the prior art, storage can cause environmental pollution, and blocky objects in kaolin can reduce production efficiency and increase personal labor intensity. The device comprises a first vibrating screen and a second vibrating screen which are arranged in a storage bin, a first discharge port and a second discharge port are formed in the storage bin, the first discharge port is connected with a first crusher, the first crusher and the second discharge port are connected with a second crusher, the second crusher is connected with a first elevator, and the first elevator is connected with a second elevator. The storage bin is provided with a first feeding port communicated with the first elevator, and the bottom of the storage bin is communicated with a conveyor. The kaolin is subjected to screening pretreatment in the storage bin, the dust raising problem in manual operation is reduced, the cleanliness of the operation environment is improved, meanwhile, blocky materials are screened out and then crushed, it is ensured that the materials reach the proper particle size, the manual crushing and stirring time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of kaolin storage, in particular to a storage and transportation system for kaolin. Background Art

[0002] Kaolin is a relatively inexpensive and abundant natural mineral resource with a layered structure and excellent thermal and chemical stability. Kaolin is often used as the primary carrier material in catalytic cracking catalyst components. Since catalysts must withstand long-term high temperatures and abrasion in the reactor, kaolin provides the necessary mechanical strength, wear resistance, and thermal stability. Catalytic cracking reactions also place high demands on the catalyst's pore structure. Kaolin's layered structure and plasticity make it a valuable material for adjusting and optimizing the catalyst's pore structure and improving the dispersion of molecular sieves. Furthermore, the pre-cracking of heavy oil macromolecules occurs on a substrate. Modified kaolin can impart certain cracking properties, enhancing substrate cracking activity and improving catalyst conversion. Kaolin also resists heavy metal contamination, extending catalyst life. Kaolin is used extensively in the preparation of catalytic cracking catalysts due to its important role in reducing costs, enhancing carrier functionality, optimizing pore structure, improving stability, and improving physical properties.

[0003] There are some obvious disadvantages in the current use of kaolin storage, mainly reflected in the following: (1) Packaging and storage problems: Using ton bags to pack kaolin takes up a lot of space, and ton bags are prone to aging and damage, resulting in material spillage and environmental pollution; when stacking in the material yard, a large amount of dust will be generated, and it is difficult to control the unorganized emission of dust. (2) Safety and operation risks: There are safety risks in the process of lifting, unpacking and feeding ton bags of kaolin. (3) Usage and production efficiency problems: Kaolin often contains large lumps. In the preparation of catalysts, they need to be screened out and manually crushed. In addition, the lumps need to be stirred for several hours in the pulping process to reach the required particle size and dispersion. The stirring motor has high power and energy consumption. The lumps are also easy to clog the discharge valve at the bottom of the pulping tank and the material transfer pipeline, requiring frequent shutdowns for cleaning, which reduces production efficiency and increases personal labor intensity.

[0004] In order to overcome the above problems, more effective technical measures need to be introduced during the storage and use of kaolin to improve the efficiency and safety of kaolin in the preparation of catalytic cracking catalysts. Utility Model Content

[0005] In response to the above problems, the purpose of the utility model is to provide a storage and transportation system for kaolin, in which the storage silo stores the kaolin, and the conveyor at the bottom of the storage silo can transport the kaolin to a designated location, thereby maintaining the safety of transportation; the kaolin transported into the storage silo is also screened and pre-treated in the storage silo, thereby reducing the dust problem in manual operation and improving the cleanliness of the operating environment. At the same time, the lumps are screened out and then crushed to ensure that the material reaches the appropriate particle size, reducing the time for manual crushing and mixing, avoiding blockage, and improving production efficiency.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A storage and transportation system for kaolin includes a storage silo, in which a first vibrating screen and a second vibrating screen are arranged obliquely from top to bottom in sequence, the sieve aperture of the first vibrating screen being larger than the sieve aperture of the second vibrating screen, the storage silo is provided with a first discharge port communicating with the discharge end of the first vibrating screen and a second discharge port communicating with the discharge end of the second vibrating screen, the first discharge port is connected to a first crusher via a pipeline, the first crusher and the second discharge port are connected to a second crusher via a pipeline, the second crusher is connected to a first elevator via a pipeline, the storage silo is provided with a first feeding port located between the first vibrating screen and the second vibrating screen and communicated with the first elevator, and the bottom of the storage silo is connected to a conveyor.

[0008] Preferably, a coil is provided on the outer wall of the storage silo, the coil is connected to a compressor for conveying hot gas through a pipeline, and a first regulating valve is provided on the pipeline connecting the coil and the compressor.

[0009] Preferably, the outlet of the compressor is connected to an anti-arch air inlet arranged at the bottom of the storage silo through a pipeline, and a second regulating valve is provided on the pipeline between the anti-arch air inlet and the compressor.

[0010] Preferably, the end of the conveyor is connected to a feed pipe, the outlet of the compressor is connected to the feed pipe through a pipeline, and a third regulating valve is provided on the pipeline between the feed pipe and the compressor.

[0011] Preferably, the bottom of the storage silo is a conical structure, and a plurality of air hammers are provided at the bottom of the storage silo.

[0012] Preferably, a temperature monitoring device is provided on the side wall of the storage silo.

[0013] Preferably, a first viewing window is provided on the top of the storage silo, and a plurality of second viewing windows are provided on the bottom of the storage silo.

[0014] Preferably, a first manhole is provided on the top of the storage silo, and a second manhole is provided on the side wall of the storage silo.

[0015] Preferably, a second feeding port is provided on the top of the storage silo, and the second feeding port is connected to a second elevator through a pipeline.

[0016] Preferably, the first crusher is a jaw crusher, and the second crusher is a wheel crusher.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] The storage silo stores kaolin, and the conveyor at the bottom of the storage silo can transport the kaolin to the designated location, ensuring the safety of transportation. The kaolin transported into the storage silo is also screened and pre-treated in the storage silo, reducing the dust problem during manual operation and improving the cleanliness of the operating environment. At the same time, the lumps are screened out and then crushed to ensure that the material reaches the appropriate particle size, reducing the time for manual crushing and mixing, avoiding blockage, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of a process flow provided for an embodiment of the present utility model.

[0021] Figure markings: 1-second elevator; 2-storage silo; 201-second feeding port; 202-first vibrating screen; 203-second vibrating screen; 204-first discharge port; 205-second discharge port; 206-first manhole; 207-first feeding port; 208-coil; 209-temperature monitoring device; 210-air hammer; 211-anti-arch air inlet; 212-first window; 213-second window; 214-second manhole; 3-conveyor; 4-first crusher; 5-second crusher; 6-first elevator; 7-compressor; 701-first regulating valve; 702-second regulating valve; 703-third regulating valve; 8-feeding pipe. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0025] The following combination Figure 1 The utility model is described in detail.

[0026] Example

[0027] A storage and transportation system for kaolin includes a storage silo 2, in which a first vibrating screen 202 and a second vibrating screen 203 are arranged obliquely from top to bottom. The sieve aperture of the first vibrating screen 202 is larger than the sieve aperture of the second vibrating screen 203. The storage silo 2 is provided with a first discharge port 204 communicating with the discharge end of the first vibrating screen 202 and a second discharge port 205 communicating with the discharge end of the second vibrating screen 203. The first discharge port 204 is connected to a first crusher 4 via a pipeline, the first crusher 4 and the second discharge port 205 are connected to a second crusher 5 via a pipeline, the second crusher 5 is connected to a first elevator 6 via a pipeline, the storage silo 2 is provided with a first feeding port 207 located between the first vibrating screen 202 and the second vibrating screen 203 and communicated with the first elevator 6, and the bottom of the storage silo 2 is connected to a conveyor 3.

[0028] The storage silo 2 stores kaolin, and the conveyor 3 at the bottom of the storage silo 2 can transport the kaolin to a designated location, ensuring the safety of transportation; the first vibrating screen 202 and the second vibrating screen 203 in the storage silo 2 also screen and pre-treat the kaolin transported into the storage silo 2, and at the same time screen out the lumps which are then crushed by the first crusher 4 and the second crusher 5 to ensure that the material reaches a suitable particle size.

[0029] The outer wall of the storage silo 2 is provided with a coil 208, which is connected to a compressor 7 for conveying hot gas through a pipeline. A first regulating valve 701 is provided on the pipeline connecting the coil 208 and the compressor 7. The coil 208 is provided with an air inlet and an air outlet (not shown in the figure). The air outlet is connected to the downstream waste heat recovery system, and the air inlet is connected to the outlet of the compressor 7. The inlet of the compressor 7 is connected to the upstream molecular sieve and / or catalyst roasting furnace flue exhaust system. The exhaust gas with heat is conveyed by the compressor 7 to the coil 208 to heat the storage silo 2, so that the kaolin in the storage silo 2 remains dry, preventing the kaolin from agglomerating during storage, and ensuring the long-term stability of the material. The first regulating valve 701 can adjust the flow rate of the hot gas according to demand.

[0030] The outlet of compressor 7 is connected via a pipe to an anti-arching air inlet 211 at the bottom of storage silo 2. A second regulating valve 702 is installed on the pipe between anti-arching air inlet 211 and compressor 7. The hot air output from compressor 7 enters the kaolin clay, preventing and breaking arches and further enhancing the drying effect. The second regulating valve 702 adjusts the flow of the hot air based on demand.

[0031] The end of conveyor 3 is connected to a feed pipe 8, which is connected to the outlet of compressor 7 via a pipe. A third regulating valve 703 is installed in the pipeline between feed pipe 8 and compressor 7. Feed pipe 8 is connected to the downstream catalyst preparation system. Conveyor 3 transfers kaolin from storage silo 2 into feed pipe 8, and the gas output from compressor 7 assists in transporting the kaolin to the downstream catalyst preparation system. The third regulating valve 703 adjusts the flow rate of hot gas according to demand. Conveyor 3 is a screw conveyor.

[0032] The bottom of the storage silo 2 is a conical structure, and a plurality of air hammers 210 are provided at the bottom of the storage silo 2. The air hammers 210 vibrate the silo wall to destroy the equilibrium condition of the material arching, so that the material does not arch or collapses the arched material and helps the material slide down and gather at the bottom of the storage silo 2.

[0033] The side wall of the storage silo 2 is provided with a temperature monitoring device 209. The temperature monitoring device 209 monitors the temperature of the material in the silo to keep the material at a suitable storage temperature.

[0034] A first viewing window 212 is provided on the top of the storage silo 2, and several second viewing windows 213 are provided on the bottom of the storage silo 2. The first viewing window 212 allows observation of the storage silo 2 and the first vibrating screen 202; the second viewing windows 213 are used to check the quality of the kaolin powder.

[0035] A first manhole 206 is provided on the top of the storage silo 2, and a second manhole 214 is provided on the side wall of the storage silo 2. The first manhole 206 is used for maintenance, and the second manhole 214 is used for artificial arch breaking.

[0036] The top of the storage silo 2 is provided with a second feeding port 201, which is connected to a second elevator 1 via a pipeline. Kaolin from outside is transported into the storage silo 2 via the second elevator 1, which is convenient and fast. Both the first elevator 6 and the second elevator 1 are conventional technologies.

[0037] The first crusher 4 is a jaw crusher, and the second crusher 5 is a wheel crusher. The jaw crusher can crush large particles, and the wheel crusher can further reduce the particle size.

[0038] The storage and transportation system usage process of this application:

[0039] The kaolin raw material enters the storage silo 2 from the second feeding port 201 through the second elevator 1, and first passes through the first vibrating screen 202 located at the upper part of the storage silo 2. The aperture of the vibrating screen is relatively large and is used for preliminary screening to remove larger lumps. The large lumps are discharged from the first discharge port 204 and enter the first crusher 4 for further crushing. The undersize products of the first vibrating screen 202 fall by gravity into the second vibrating screen 203. The aperture of the screen is relatively small and is used for further fine screening to ensure that the material reaches the required particle size standard. The smaller lumps screened out are discharged through the second discharge port 205 and enter the second crusher 5 together with the crushed materials of the first crusher 4 for crushing and processing. The crushed materials of the second crusher 5 are sent to the second vibrating screen 203 from the second feeding port 207 through the first elevator 6 for further screening. The undersize products of the second vibrating screen 203 fall by gravity to the bottom of the storage silo 2 and are sent to the conveying pipe 8 under the action of the conveyor 3. In addition, the upstream molecules The flue gas exhaust of the screen or / and the catalyst roasting furnace obtains compressed hot gas after passing through the compressor 7. Part of it is connected to the feed pipe 8 through the third regulating valve 703 for pneumatically conveying the material to the downstream catalyst preparation system, and part of it is connected to the coil 208 through the first regulating valve 701 for heating and drying the material in the storage silo 2. The hot gas enters from the air inlet of the coil 208 and is discharged from the air outlet of the coil 208, and then connected to the downstream waste heat recovery system. Part of it is connected to the anti-arching air inlet 211 through the second regulating valve 702; during the operation of the system, the conditions of the silo 2 and the first vibrating screen 202 are observed through the first window 212, and the quality of the kaolin powder is checked through the second window 213. The first manhole 214 is used for maintenance, and the second manhole 214 is used for artificial arch breaking. The air hammer 210 is used to vibrate the silo wall to destroy the equilibrium condition of the material arching, so that the material does not arch or the arched material collapses and helps the material slide down. The temperature of the material in the silo is monitored by the temperature measuring device 217. The water content of the kaolin stored in the storage silo 2 is below 15% and the maximum particle size is below 5 mm.

[0040] Advantages of using storage and transportation system:

[0041] (1) Efficient processing and reduction of dust: By setting up elevators, vibrating screens and crushers, efficient pretreatment of kaolin is achieved, which reduces the dust problem in manual operation and improves the cleanliness of the operating environment.

[0042] (2) Efficient screening and crushing: The system is equipped with a double-layer vibrating screen and a two-stage crusher, which can effectively screen and crush large pieces of kaolin, ensuring that the material reaches the appropriate particle size, reducing manual crushing and mixing time, avoiding blockage, and improving production efficiency.

[0043] (3) Optimizing storage and transportation: Kaolin is transported using elevators, conveyors 3 and auxiliary pneumatic conveying, which achieves efficient storage and transportation of materials, reduces floor space, and reduces safety risks during use.

[0044] (4) Preventing material agglomeration: By arranging a coil 208 on the outer wall of the storage silo 2 and connecting it to the compressor 7 of the roasting flue gas, the kaolin can be dried by heating, thereby preventing the kaolin from agglomerating during storage and ensuring the long-term stability of the material.

[0045] (5) Systematic design and safety improvement: The various parts of the entire system are rationally configured and interconnected to form an integrated storage and transportation system, which greatly reduces safety hazards in operation and improves the overall safety and efficiency of the kaolin use process.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A storage and transportation system for kaolin, comprising a storage silo (2), characterized in that: The storage silo (2) is provided with a first vibrating screen (202) and a second vibrating screen (203) arranged in an inclined manner from top to bottom. The sieve aperture of the first vibrating screen (202) is larger than the sieve aperture of the second vibrating screen (203). The storage silo (2) is provided with a first discharge port (204) communicating with the discharge end of the first vibrating screen (202) and a second discharge port (205) communicating with the discharge end of the second vibrating screen (203). The first discharge port (204) is connected to a first crusher (4) via a pipeline. The first crusher (4) and the second discharge port (205) are connected to a second crusher (5) via a pipeline. The second crusher (5) is connected to a first elevator (6) via a pipeline. The storage silo (2) is provided with a first feeding port (207) located between the first vibrating screen (202) and the second vibrating screen (203) and communicating with the first elevator (6). The bottom of the storage silo (2) is connected to a conveyor (3).

2. A storage and transportation system for kaolin according to claim 1, characterized in that: The outer wall of the storage silo (2) is provided with a coil (208), the coil (208) is connected to a compressor (7) for conveying hot gas through a pipeline, and a first regulating valve (701) is provided on the pipeline connecting the coil (208) and the compressor (7).

3. A storage and transportation system for kaolin according to claim 2, characterized in that: The outlet of the compressor (7) is connected to an anti-arching air inlet (211) arranged at the bottom of the storage silo (2) through a pipeline, and a second regulating valve (702) is provided on the pipeline between the anti-arching air inlet (211) and the compressor (7).

4. A storage and transportation system for kaolin according to claim 2, characterized in that: The end of the conveyor (3) is connected to a feed pipe (8), the outlet of the compressor (7) is communicated with the feed pipe (8) through a pipeline, and a third regulating valve (703) is provided on the pipeline between the feed pipe (8) and the compressor (7).

5. The storage and transportation system for kaolin according to claim 1, characterized in that: The bottom of the storage silo (2) is a conical structure, and a plurality of air hammers (210) are provided at the bottom of the storage silo (2).

6. The storage and transportation system for kaolin according to claim 1, characterized in that: A temperature monitoring device (209) is provided on the side wall of the storage silo (2).

7. The storage and transportation system for kaolin according to claim 1, characterized in that: The top of the storage silo (2) is provided with a first viewing window (212), and the bottom of the storage silo (2) is provided with a plurality of second viewing windows (213).

8. The storage and transportation system for kaolin according to claim 1, characterized in that: The top of the storage silo (2) is provided with a first manhole (206), and the side wall of the storage silo (2) is provided with a second manhole (214).

9. The storage and transportation system for kaolin according to claim 1, characterized in that: A second feeding port (201) is provided on the top of the storage silo (2), and the second feeding port (201) is connected to a second elevator (1) via a pipeline.

10. The storage and transportation system for kaolin according to claim 1, characterized in that: The first crusher (4) is a jaw crusher, and the second crusher (5) is a wheel crusher.

Images