A multifunctional feeding station suitable for catalyst loading and unloading

Abstract

The present invention provides a multifunctional feeding station suitable for catalyst loading and unloading, comprising: a feeding box; a filtering device, the filtering device is installed on the top of the feeding box; a fan, the fan is fixedly installed on the top of the filtering device, and the input end of the fan is connected to the output of the filtering device; a buffer bin, the buffer bin is installed on the bottom of the feeding box, a vibrating screen plate is installed inside the buffer bin, one side of the vibrating screen plate is fixedly connected with a connecting plate, the connecting plate extends through and extends to the outside of the buffer bin, and a vibration motor is fixedly installed at one end of the connecting plate located outside the buffer bin. The multifunctional feeding station suitable for catalyst loading and unloading provided by the present invention can filter and screen catalysts, adsorb iron ions and iron filings, can prevent material dust from flying everywhere, improve the working environment, ensure the occupational health of operators, improve working efficiency, and reduce safety accidents.

Description

Technical Field

[0001] The invention relates to the field of catalyst loading and unloading, and in particular to a multifunctional feeding station suitable for catalyst loading and unloading. Background Art

[0002] A feeding station is required during the catalyst loading and unloading process, for example: loading and unloading of palladium in the hydrogenation tower of a hydrogen peroxide unit, loading and unloading of catalyst in a shell-and-tube reactor of a propylene oxide unit. The reactors of the above two units have very high requirements for the control of iron filings, iron ions, and dust. If you are not careful, iron ions may react with hydrogen peroxide to cause an oxidation reaction, which may cause the reactor temperature to rise sharply and cause an explosion.

[0003] Too much dust may cause different pressure drops in the reactor, different porosity of the bed, reactor deviation, under-reaction of some materials, over-reaction of some materials, decreased production selectivity and conversion rate, and poor production efficiency. Severe reaction deviation may cause premature failure of the catalyst and inability to carry out production.

[0004] The process using shell-and-tube reactors often has very high requirements for the uniform distribution of reactor materials and heat extraction. Therefore, the uniformity of catalyst loading has a significant impact on the reaction efficiency. Before loading the catalyst, the integrity, strength, and dust content of the catalyst should be checked.

[0005] The feeding stations currently used in the catalyst loading and unloading process are prone to generate a large amount of dust when feeding the catalyst, and lack the function of removing iron filings in the catalyst.

[0006] Therefore, it is necessary to provide a multifunctional feeding station suitable for catalyst loading and unloading to solve the above technical problems. Summary of the invention

[0007] The invention provides a multifunctional feeding station suitable for loading and unloading catalysts, which solves the problem that the current catalyst feeding equipment is prone to generate a large amount of dust when feeding the catalyst.

[0008] In order to solve the above technical problems, the present invention provides a multifunctional feeding station suitable for catalyst loading and unloading, comprising:

[0009] Feed box;

[0010] A filtering device, wherein the filtering device is installed on the top of the feeding box;

[0011] A fan, the fan is fixedly mounted on the top of the filter device, and the input end of the fan is connected to the output end of the filter device;

[0012] A buffer bin, the buffer bin is installed at the bottom of the feeding box, a vibrating screen plate is installed inside the buffer bin, a connecting plate is fixedly connected to one side of the vibrating screen plate, the connecting plate extends through to the outside of the buffer bin, and a vibrating motor is fixedly installed at one end of the connecting plate located outside the buffer bin;

[0013] A discharge bin, the discharge bin is installed at the bottom of the buffer bin, a plurality of magnets are installed on the buffer bin, and the plurality of magnets are distributed through the magnetic lines of force of the S and N poles;

[0014] A suction machine connecting pipe, one end of which is connected to the unloading bin.

[0015] Preferably, a pulse recoil device is installed on the filtering device.

[0016] Preferably, the filtering device comprises a mounting cylinder and a filter cartridge, and the filter cartridge is mounted inside the mounting cylinder.

[0017] Preferably, a feeding port is provided on one side of the feeding box, a door is hinged on one side of the feeding box at a position corresponding to the feeding port, and the inner side of the door is connected to the feeding box via a gas spring.

[0018] Preferably, a filtering and collecting mechanism is installed inside the mounting cylinder, and the filtering and collecting mechanism includes a connecting box, a connecting pipe, a collecting cylinder, a first air inlet pipe and a filter screen. The output end of the connecting box is connected to the input end of the fan, the connecting pipe is fixed to the bottom air inlet end of the connecting box, the filter screen is fixedly installed at the bottom air inlet of the connecting box, and the first air inlet pipe is installed on one side of the connecting pipe.

[0019] Preferably, the collecting tube is threadably connected to the bottom end of the connecting tube.

[0020] Preferably, the output end of the fan is connected to an exhaust pipe, the exhaust pipe is connected to a branch pipe, the branch pipe and the exhaust pipe are both equipped with a first valve and a second valve, and one end of the branch pipe passes through the mounting tube and extends to the interior of the mounting tube.

[0021] Preferably, a cleaning mechanism is provided inside the mounting tube, and the cleaning mechanism includes a second air intake pipe, one end of the second air intake pipe is connected to one end of the branch pipe located inside the mounting tube, the other end of the second air intake pipe is connected to an L-shaped air guide box, the end of the L-shaped air guide box away from the second air intake pipe is connected to a telescopic tube, the telescopic tube is connected to an air guide plate, one end of the air guide plate passes through and extends to the interior of the connecting tube, and the exhaust port of the air guide plate faces the filter.

[0022] Preferably, a driving mechanism is provided at the bottom of the L-shaped air guide box, and the driving mechanism includes a mounting box, a main shaft and a driving impeller. The mounting box is arranged at the bottom of the L-shaped air guide box, the main shaft is rotatably connected to the mounting box, the driving impeller is fixed on the main shaft and is located inside the mounting box, and the upper side of the driving impeller extends to the inside of the L-shaped air guide box.

[0023] Preferably, a reciprocating mechanism is installed inside the mounting tube, and the reciprocating mechanism includes a fixed plate, a reciprocating screw, a nut and a driving arm. The fixed plate is fixed to the inside of the mounting tube, the screw is rotatably connected to the fixed plate, the nut is threadedly connected to the reciprocating screw, the nut is fixedly connected to the air guide plate through the driving arm, and the reciprocating screw is transmission-connected to the main shaft through a transmission member.

[0024] Compared with the related art, the multifunctional feeding station suitable for catalyst loading and unloading provided by the present invention has the following beneficial effects:

[0025] The invention provides a multifunctional feeding station suitable for catalyst loading and unloading, which can filter and screen catalysts, adsorb iron ions and iron filings, avoid material dust flying everywhere, improve the working environment, ensure the occupational health of operators, improve working efficiency, and reduce safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a first embodiment of a multifunctional feeding station suitable for catalyst loading and unloading provided by the present invention;

[0027] Figure 2 for Figure 1 A partial cross-sectional view of the side of the whole shown;

[0028] Figure 3 A schematic structural diagram of a second embodiment of a multifunctional feeding station suitable for catalyst loading and unloading provided by the present invention;

[0029] Figure 4 for Figure 3 An enlarged schematic diagram of part A is shown;

[0030] Figure 5 for Figure 4 The structural schematic diagram of the cleaning mechanism shown;

[0031] Figure 6 for Figure 4 A sectional view of the driving mechanism shown.

[0032] Numbers in the figure:

[0033] 1. Feeding box,

[0034] 101. Bin door, 102. Gas spring, 103. Feeding port,

[0035] 2. Filtration device,

[0036] 3. Fan,

[0037] 4. Cache warehouse,

[0038] 51. Vibration motor, 52. Vibration screen plate,

[0039] 6. Unloading silo,

[0040] 7. Magnets,

[0041] 8. Suction machine connecting pipe,

[0042] 30. Pulse recoil device,

[0043] 9. Filtering and collecting mechanism, 91. Connecting box, 92. Connecting pipe, 93. Collecting cylinder, 94. First air inlet pipe, 95. Filter screen,

[0044] 10. Exhaust pipe,

[0045] 11. Branch pipe,

[0046] 12. First valve, 13. Second valve,

[0047] 14. Cleaning mechanism, 141. Second air inlet pipe, 142. L-shaped air guide box, 143. Telescopic tube, 144. Air guide plate,

[0048] 15. Driving mechanism, 151. Mounting box, 152. Main shaft, 153. Driving impeller,

[0049] 16. Reciprocating mechanism, 161. Fixed plate, 162. Reciprocating screw rod, 163. Nut, 164. Driving arm,

[0050] 17. Transmission parts. DETAILED DESCRIPTION

[0051] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes. Example

[0052] Please refer to Figure 1 and Figure 2 ,in, Figure 1 A schematic structural diagram of a first embodiment of a multifunctional feeding station suitable for catalyst loading and unloading provided by the present invention; Figure 2 for Figure 1 A partial cross-sectional view of the side of the whole is shown. A multifunctional feeding station suitable for catalyst loading and unloading, comprising:

[0053] Feed box 1;

[0054] A filter device 2, wherein the filter device 2 is installed on the top of the feeding box 1;

[0055] A fan 3, wherein the fan 3 is fixedly mounted on the top of the filter device 2, and an input end of the fan 3 is connected to an output end of the filter device 2;

[0056] A buffer bin 4, the buffer bin 4 is installed at the bottom of the feeding box 1, a vibrating screen plate 52 is installed inside the buffer bin 4, a connecting plate is fixedly connected to one side of the vibrating screen plate 52, the connecting plate extends through to the outside of the buffer bin 4, and a vibrating motor 51 is fixedly installed at one end of the connecting plate located outside the buffer bin 4;

[0057] A discharge bin 6, the discharge bin 6 is installed at the bottom of the buffer bin 4, and a plurality of magnets 7 are installed on the buffer bin 4, and the plurality of magnets are distributed through the magnetic lines of force of the S and N poles;

[0058] The magnets 7 are preferably provided in three pieces, and other numbers can be provided as required;

[0059] A suction machine connecting pipe 8 , one end of which is connected to the discharge bin 6 .

[0060] Preferably, three suction machine connecting pipes 8 are provided.

[0061] The filter device 2 is provided with a pulse recoil device 30 .

[0062] The back of the cache bin 4 is provided with an assembly hole, through which the connecting plate extends to the outside of the cache bin 4, and the size of the assembly hole cavity is larger than the connecting plate, and the position of the vibration screen plate 52 corresponding to the assembly hole is connected to the inner wall of the cache bin 4 through a connecting cloth cover, so as to prevent dust from being discharged through the assembly hole and meet the space requirements required during vibration;

[0063] The vibrating screen plate 52 selects the mesh number according to the material size;

[0064] The pulse recoil device 2 is used to adjust the pressure of the compressed air in the air bag to 0.4~0.6Mpa by adjusting the knob on the filter pressure reducing valve. The compressed air is mainly used for pulse back-blowing cleaning of the filter in the dust collector, that is, the compressed air is blown onto the filter cartridge 22 to blow off the dust on its surface to prevent clogging.

[0065] The filtering device 2 includes a mounting cylinder 21 and a filter cartridge 22 , and the filter cartridge 22 is mounted inside the mounting cylinder 21 .

[0066] The input end of the fan 3 is connected to the input end of the mounting tube 21 .

[0067] A feeding port 103 is provided on one side of the feeding box 1, and a door 101 is hinged on one side of the feeding box 1 at a position corresponding to the feeding port 103. The inner side of the door 101 is connected to the feeding box 1 through a gas spring 102, wherein two gas springs 102 are preferably provided, symmetrically arranged on both sides of the feeding port 103.

[0068] The feeding bin door 101 is provided with a gas spring steam opener, which is convenient for the operator to open, and sealing strips are embedded around the bin door 101 to prevent dust from flying out.

[0069] A touch control panel is also provided. When the on / off button on the control panel is touched, the fan 3 and the vibration motor 51 on the vibrating screen 52 are started simultaneously. At this time, it is necessary to observe whether the rotation direction of the fan 3 is correct. When the rotation direction is correct, a large amount of air should be discharged from the exhaust port of the fan 3; if the air volume at the exhaust port of the fan 3 is not large, it means that the rotation direction of the fan 3 is wrong, and the fan 3 should be stopped and the wiring of the motor of the fan 3 should be readjusted.

[0070] The pressure of the pulse recoil device is adjusted according to the particle size and pulverization degree of different catalysts.

[0071] The vibration force of the vibration motor 51 should be adjusted according to the strength of the catalyst. Too much pressure will shatter the catalyst.

[0072] The working principle of the multifunctional feeding station suitable for catalyst loading and unloading provided by the present invention is as follows:

[0073] The suction machine connecting pipe 8 is connected to the suction machine input end for dust removal;

[0074] The door 101 is opened to feed the catalyst through the feeding port 103 , and then the door 101 is closed.

[0075] Turn on the fan 3 on the top of the equipment. When the fan 3 for dust removal is in the exhaust working state, a certain negative pressure is obtained in the inner cavity of the equipment, and the dust generated during feeding is sucked into the filter cylinder of the filter device 2 to prevent leakage outside the box; thereby effectively preventing the operator from direct contact with the flying dust of the material and protecting the operator's health.

[0076] The catalyst falls downward onto the vibrating screen plate 52, which is located inside the buffer bin 4. The vibrating motor 51 drives the vibrating screen plate 52 to vibrate, which can intercept large pieces of materials and foreign matter, vibrate the agglomerated catalyst, and make the catalyst particles loaded into the reactor uniform.

[0077] The dust generated when the vibrating screen plate is working is concentrated inside the buffer bin 4 and is sucked away for secondary dust removal through a suction machine in conjunction with a suction machine connecting pipe 8 .

[0078] The strong magnet 7 located outside the discharge bin 6 is provided with a strong magnet to absorb the iron ions and iron filings in the material.

[0079] The material is finally discharged through the output port of the discharge bin 6;

[0080] Compared with the related art, the multifunctional feeding station suitable for catalyst loading and unloading provided by the present invention has the following beneficial effects:

[0081] The equipment can filter and screen catalysts, adsorb iron ions and iron filings, prevent material dust from flying everywhere, improve the working environment, ensure the occupational health of operators, improve working efficiency and reduce safety accidents. Example

[0082] Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 Based on the multifunctional feeding station suitable for catalyst loading and unloading provided in the first embodiment of the present application, the second embodiment of the present application proposes another multifunctional feeding station suitable for catalyst loading and unloading. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0083] Specifically, the multifunctional feeding station suitable for catalyst loading and unloading provided in the second embodiment of the present application is different in that:

[0084] Please see attached Figure 3 A filter collecting mechanism 9 is installed inside the installation cylinder 21, and the filter collecting mechanism 9 replaces the filter device 2. The filter collecting mechanism 9 includes a connecting box 91, a connecting pipe 92, a collecting cylinder 93, a first air inlet pipe 94 and a filter screen 95. The output end of the connecting box 91 is connected to the input end of the fan 3, the connecting pipe 92 is fixed to the bottom air inlet end of the connecting box 91, and the filter screen 95 is fixedly installed at the bottom air inlet of the connecting box 91. A first air inlet pipe 94 is installed on one side of the connecting pipe 92.

[0085] The lower side of the surface of the collecting tube 93 is provided with an internal thread.

[0086] The collecting tube 93 is threadedly connected to the bottom end of the connecting tube 92 .

[0087] The upper side of the surface of the collecting tube 93 is provided with an external thread opposite to the internal thread, and the surface of the collecting tube 93 is provided with a plurality of driving ears.

[0088] When the catalyst is added, the fan 3 starts working and the first valve 12 is opened, the airflow sucks the dust through the first air inlet pipe 94 and enters the connecting pipe 92, and then the dust carried in the airflow is filtered through the filter screen 95, and the filtered airflow is discharged through the exhaust pipe 10;

[0089] When the equipment is finished working, the dust falls into the collection tube 93. After opening the door 101, the collection tube 93 can be unscrewed from the connecting pipe 92 to clean the dust, which is convenient for collecting and cleaning the dust.

[0090] Please refer to the attached Figure 3-6 The output end of the fan 3 is connected to an exhaust pipe 10, and the exhaust pipe 10 is connected to a branch pipe 11. The branch pipe 11 and the exhaust pipe 10 are both installed with a first valve 12 and a second valve 13. One end of the branch pipe 11 passes through the installation tube 21 and extends to the inside of the installation tube 21.

[0091] The penetration point between the branch pipe 11 and the installation cylinder 21 is sealed, and the first valve 12 and the second valve 13 are preferably solenoid valves that can be automatically controlled to open and close.

[0092] A cleaning mechanism 14 is provided inside the mounting tube 21, and the cleaning mechanism 14 includes a second air intake pipe 141, one end of the second air intake pipe 141 is connected to one end of the branch pipe 11 located inside the mounting tube 2, and the other end of the second air intake pipe 141 is connected to an L-shaped air guide box 142, and the end of the L-shaped air guide box 142 away from the second air intake pipe 141 is connected to a telescopic tube 143, and the telescopic tube 143 is connected to an air guide plate 144, one end of the air guide plate 144 passes through and extends to the inside of the connecting tube 92, and the exhaust port of the air guide plate 144 faces the filter 95.

[0093] The telescopic tube 143 is staggered with concave folded cross sections and convex folded cross sections. The telescopic tube 143 is preferably made of plastic material and can be telescoped along the concave folded cross sections and the convex folded cross sections. The width of the air guide plate 144 is preferably the same as the width of the filter screen 95.

[0094] A driving mechanism 15 is provided at the bottom of the L-shaped air guide box 142, and the driving mechanism 15 includes a mounting box 151, a main shaft 152 and a driving impeller 153. The mounting box 151 is provided at the bottom of the L-shaped air guide box 142, and the main shaft 152 is rotatably connected to the mounting box 151. The driving impeller 153 is fixed on the main shaft 152 and is located inside the mounting box 151. The upper side of the driving impeller 153 extends to the inside of the L-shaped air guide box 142.

[0095] When the airflow enters the interior of the L-shaped air guide box 142 , the airflow can drive the impeller 153 to rotate, thereby driving the main shaft 152 to rotate, and the main shaft 152 drives the reciprocating screw 162 to rotate through the transmission member 17 .

[0096] A reciprocating mechanism 16 is installed inside the mounting tube 21, and the reciprocating mechanism 16 includes a fixed plate 161, a reciprocating screw rod 162, a nut 163 and a driving arm 164. The fixed plate 161 is fixed to the inside of the mounting tube 21, the screw rod 162 is rotatably connected to the fixed plate 161, the nut 163 is threadedly connected to the reciprocating screw rod 162, the nut 163 is fixedly connected to the air guide plate 144 through the driving arm 164, and the reciprocating screw rod 162 is transmission-connected to the main shaft 152 through the transmission member 17.

[0097] The length of the nut 163 formed by the reciprocating transverse movement along the surface of the reciprocating screw rod 162 corresponds to the same length as the filter screen 95.

[0098] A support arm is provided at the bottom of the connection box 91 , and the driving arm 164 passes through the support arm, and the support arm supports the driving arm 164 .

[0099] The transmission member 17 may be a combination of a gear and a toothed belt, a chain and a sprocket, or a belt and a pulley;

[0100] When the filter screen 95 needs to be cleaned, the first valve 12 is closed, the second valve 13 is opened, and the fan 3 is turned on. The fan 3 guides the airflow into the interior of the L-shaped air guide box 142 through the branch pipe 11, thereby driving the impeller 153 to rotate, driving the impeller 153 to drive the main shaft 152 to rotate, and the main shaft 152 drives the reciprocating screw rod 162 to rotate through the transmission member 17;

[0101] The reciprocating screw rod 162 rotates and drives the nut 163 to move back and forth along its surface, and the nut 163 drives the air guide plate 144 to move back and forth horizontally. When the air guide plate 144 moves back and forth horizontally, it drives the telescopic tube 143 to contract along the concave folding horizontal and the convex folding horizontal;

[0102] At the same time, the airflow passes through the L-shaped air guide box and then enters the air guide plate 144 through the telescopic tube 143, and is sprayed to the lower side of the filter 95 through the air guide plate 144 to clean the dust attached to the lower side of the filter 95, thereby avoiding clogging the filter 95 and extending the service life of the filter 95.

[0103] Furthermore, the driving mechanism 15 cooperates with the reciprocating mechanism 16 to drive the air guide plate to move back and forth 144, so as to clean the filter screen 95 more thoroughly;

[0104] Furthermore, the airflow generated by the fan 3 is used as the power to drive the air guide plate 144 to move back and forth horizontally, and no additional power is required, which is more energy-saving and environmentally friendly.

[0105] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multifunctional feeding station suitable for catalyst loading and unloading, characterized in that: include: Feed box; A filtering device, wherein the filtering device is installed on the top of the feeding box; A fan, the fan is fixedly mounted on the top of the filter device, and the input end of the fan is connected to the output end of the filter device; A buffer bin, the buffer bin is installed at the bottom of the feeding box, a vibrating screen plate is installed inside the buffer bin, a connecting plate is fixedly connected to one side of the vibrating screen plate, the connecting plate extends through to the outside of the buffer bin, and a vibrating motor is fixedly installed at one end of the connecting plate located outside the buffer bin; A discharge bin, the discharge bin is installed at the bottom of the buffer bin, a plurality of magnets are installed on the buffer bin, and the plurality of magnets are distributed through the magnetic lines of force of the S and N poles; A suction machine connecting pipe, one end of which is connected to the buffer bin; The filtering device comprises a mounting cylinder and a filter cartridge, wherein the filter cartridge is mounted inside the mounting cylinder; A filter collection mechanism is installed inside the installation cylinder, and the filter collection mechanism includes a connection box, a connection pipe, a collection cylinder, a first air inlet pipe and a filter screen. The output end of the connection box is connected to the input end of the fan, the connection pipe is fixed to the bottom air inlet end of the connection box, the filter screen is fixedly installed at the bottom air inlet of the connection box, and the first air inlet pipe is installed on one side of the connection pipe; The output end of the fan is connected to an exhaust pipe, the exhaust pipe is connected to a branch pipe, the branch pipe and the exhaust pipe are both installed with a first valve and a second valve, and one end of the branch pipe passes through the installation tube and extends to the inside of the installation tube; A cleaning mechanism is provided inside the mounting tube, and the cleaning mechanism includes a second air intake pipe, one end of the second air intake pipe is connected to one end of the branch pipe located inside the mounting tube, the other end of the second air intake pipe is connected to an L-shaped air guide box, an end of the L-shaped air guide box away from the second air intake pipe is connected to a telescopic tube, an air guide plate is connected to the telescopic tube, one end of the air guide plate passes through and extends to the interior of the connecting tube, and the exhaust port of the air guide plate faces the filter.

2. The multifunctional feeding station suitable for catalyst loading and unloading according to claim 1, characterized in that: A pulse recoil device is installed on the filtering device.

3. The multifunctional feeding station suitable for catalyst loading and unloading according to claim 1, characterized in that: A feeding port is provided on one side of the feeding box, and a warehouse door is hinged on one side of the feeding box at a position corresponding to the feeding port, and the inner side of the warehouse door is connected to the feeding box through a gas spring.

4. The multifunctional feeding station suitable for catalyst loading and unloading according to claim 1, characterized in that: The collecting tube is threadably connected to the bottom end of the connecting tube.

5. The multifunctional feeding station suitable for catalyst loading and unloading according to claim 1, characterized in that: A driving mechanism is provided at the bottom of the L-shaped air guide box, and the driving mechanism includes a mounting box, a main shaft and a driving impeller. The mounting box is provided at the bottom of the L-shaped air guide box, the main shaft is rotatably connected to the mounting box, the driving impeller is fixed on the main shaft and is located inside the mounting box, and the upper side of the driving impeller extends to the inside of the L-shaped air guide box.

6. The multifunctional feeding station suitable for catalyst loading and unloading according to claim 5, characterized in that: A reciprocating mechanism is installed inside the mounting tube, and the reciprocating mechanism includes a fixed plate, a reciprocating screw, a nut and a driving arm. The fixed plate is fixed inside the mounting tube, the screw is rotatably connected to the fixed plate, the nut is threadedly connected to the reciprocating screw, the nut is fixedly connected to the air guide plate through the driving arm, and the reciprocating screw is transmission-connected to the main shaft through a transmission member.

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