A catalytic cracking system and a catalytic cracking method

Abstract

The present invention discloses a catalytic cracking system and a catalytic cracking method, which relate to the technical field of catalytic cracking, and aim to solve the existing technical problems that it is difficult to adjust the flow rate of the catalyst while improving the steam distribution, and the settler cleaning effect is not good, which affects the quality of oil refining. The system includes a riser, a catalyst interface arranged outside the riser, and a feed oil port. In the process of catalytic cracking reaction, the present invention uses the cooperation of a guide component to allow the raw material gas to react with steam multiple times and evenly, ensuring that the raw material obtains sufficient steam for gasification, thereby reducing the risk of coking. At the same time, the guide component is used to limit the raw material, so that the gas can stably contact with the steam during the circulation process, ensuring the reaction time between the raw material and the steam, further reducing the possibility of the raw material not being gasified and coking, thereby ensuring the quality of the oil refined by the catalytic cracking system and the refining efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of catalytic cracking, and more specifically, to a catalytic cracking system and a catalytic cracking method. Background Art

[0002] Catalytic cracking is one of the oil refining processes. It is a process in which heavy oil undergoes cracking reaction under the action of heat and catalyst to transform into light products such as cracked gas, gasoline and diesel. The system is mainly composed of reactors (including riser reactors), settlers, regenerators, fractionators and absorption stabilization systems. Its core function is to decompose large molecular hydrocarbons in heavy oil products into smaller molecular hydrocarbons to increase the output of light oil products, especially gasoline, and improve the combustion performance of oil products.

[0003] The existing catalytic cracking process is a complex and delicate process that relies on a series of closely connected equipment working together to effectively process oil. In this series of equipment, the reactor plays a vital role, and the riser reactor is the most commonly used type of reactor. The riser reactor plays a core role in the catalytic cracking system with its unique structural design and efficient catalytic cracking performance. When the oil feedstock enters the riser reactor, it will come into violent contact and reaction with the regenerated hot catalyst, and then quickly crack into smaller hydrocarbon molecules under the action of high temperature and catalyst. This process not only increases the output of light oil products, especially gasoline, but also significantly improves the combustion performance and quality of oil products.

[0004] The existing riser reactor has no flow rate for the entire catalyst and the steam distribution effect is single, which easily leads to uneven catalyst flow rate. If the catalyst flow rate is not properly adjusted, it may cause uneven distribution of catalyst inside the reactor. There are too many catalysts in some areas, and too few catalysts in some areas, which will affect the full contact between the raw materials and the catalyst, thereby reducing the reaction efficiency. At the same time, due to the uneven distribution of steam, some raw materials may not get enough steam for gasification, resulting in the raw materials existing in an ungasified form, increasing the risk of coking. Uneven steam distribution may also affect the atomization effect of the nozzle. Nozzles with poor atomization effects cannot evenly and finely disperse the raw materials in the reactor, further increasing the possibility of ungasified and coked raw materials, thereby affecting the quality of petroleum refined by the existing catalytic cracking system and the refining efficiency. In view of this, we propose a catalytic cracking system and a catalytic cracking method. Summary of the invention

[0005] The object of the present invention is to provide a catalytic cracking system and a catalytic cracking method to solve the existing technical problems that it is difficult to adjust the flow rate of the catalyst while improving the steam distribution, and the settler cleaning effect is poor, which affects the quality of petroleum refining.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a catalytic cracking system and a catalytic cracking method, comprising:

[0007] A lifting pipe mechanism, comprising a lifting pipe, a catalyst interface and a feed oil port arranged outside the lifting pipe, an isolation plate, a connecting pipe, a reaction chamber and an injection port arranged outside the reaction chamber, wherein the isolation plate is located inside the lifting pipe, the connecting pipe is located above the lifting pipe, and the top of the connecting pipe is connected to the reaction chamber; and a separation mechanism, comprising a primary cyclone separator, the primary cyclone separator is located below the stripping mechanism and above the reaction chamber; and a stripping mechanism, comprising a shell assembly, an injection assembly arranged outside the shell assembly, a guide shell and a vibration assembly, wherein the guide assembly is located inside the shell assembly, and the vibration assembly is located inside the injection assembly; and a settling mechanism, comprising a conical shell, an air inlet arranged outside the conical shell and a cleaning assembly, wherein the cleaning assembly is arranged inside the conical shell.

[0008] In the process of catalytic cracking reaction, the present invention uses the cooperation of the guide component to enable the raw material gas to react with steam multiple times and evenly, ensuring that the raw material obtains sufficient steam for gasification, thereby reducing the risk of coking. At the same time, the guide component is used to restrict the raw material so that the gas can stably contact with the steam during the circulation process, and the isolation plate can ensure that the gas has a residence space, ensuring the reaction time between the raw material and the steam, further reducing the possibility of raw material non-gasification and coking, thereby ensuring the quality of petroleum refined by the catalytic cracking system and the refining efficiency.

[0009] Preferably, the outer wall of the lifting tube is connected with the catalyst interface and the feed oil port, and the catalyst interface and the feed oil port are both inclined. The other end of the catalyst interface is inclined upward, and the feed oil port is inclined downward. There are several isolation plates, and several isolation plates are staggered and inclined in the lifting tube. The top end of the lifting tube is connected with the bottom end of the connecting tube, and the top end of the connecting tube is connected with the bottom end of the reaction bin. The outer wall below the reaction bin is inclined with several injection ports.

[0010] Preferably, the separation mechanism comprises a primary cyclone separator, the outer wall of the shell assembly is connected to the gas injection assembly, the inner wall of the gas injection assembly is fixedly connected to a plurality of vibration assemblies, and the inner wall of the shell assembly is fixedly connected to the guide assembly;

[0011] The top end of the primary cyclone separator is connected to the shell assembly, the bottom end of the primary cyclone separator is connected to the top end of the reaction bin, and the top end of the shell assembly is connected to the bottom end of the sedimentation assembly.

[0012] Preferably, the settling assembly comprises a conical shell, the outer wall of the conical shell is connected to the air inlet, and the inner wall of the conical shell is fixedly connected to the cleaning assembly;

[0013] The bottom end of the conical shell is communicated with the top of the shell assembly.

[0014] Preferably, the shell assembly comprises a stripping shell, a mounting groove is provided on the top of the stripping shell, a discharge port and a feed port are provided on the top and bottom of the stripping shell respectively, a plurality of isolation plates are fixedly connected in the stripping shell, a spiral plate is fixedly connected in the stripping shell, and the plurality of isolation plates are fixedly connected to the spiral plate;

[0015] The upper part of the spiral plate is mutually engaged with the guide assembly, the upper part of the stripping shell is connected with the bottom end of the conical shell through the discharge port, the feed port below the stripping shell is connected with the upper part of the primary cyclone separator, the gas injection assembly is connected with the stripping shell, and several vibration assemblies are located in the stripping shell.

[0016] Preferably, the gas injection assembly comprises a plurality of annular conduits, and the plurality of annular conduits are connected through two gas injection pipes, and the inner walls of the plurality of annular conduits are respectively connected with a plurality of exhaust pipes;

[0017] The other end of the exhaust pipe passes through the stripping shell and is located outside the guide assembly, and a plurality of vibration assemblies are arranged in a plurality of exhaust pipes.

[0018] Preferably, the guide assembly comprises a spiral shell, an injection valve is arranged above the spiral shell, a discharge valve is arranged below the spiral shell, the spiral shell is hollow, and a plurality of irregular partitions are arranged inside the spiral shell;

[0019] The injection valve is located above the mounting groove, the discharge valve is located below the stripping shell, the spiral shell is clamped on the top of the spiral plate, and the vibration component is overlapped with the spiral shell.

[0020] Preferably, the vibration assembly includes a fixed frame, a sleeve is clamped in the fixed frame, a rotating rod is sleeved in the sleeve, a driving blade is fixedly connected to the outside of the rotating rod, one end of the rotating rod passes through the driving blade and is fixedly connected to one end of a transmission rod, a plurality of sliding sleeves are fixedly connected to the outside of the transmission rod, and a plurality of sliding sleeves are slidably connected to sliding rods, a spring is arranged in the sliding sleeve, two ends of the spring are respectively fixedly connected to the bottom of the inner wall of the sliding sleeve and the bottom end of the sliding rod, and a ball block is fixedly connected to the top of the sliding rod;

[0021] The fixing frame is fixedly connected in the exhaust pipe, and the outer wall of the ball block is overlapped with the spiral shell.

[0022] Preferably, the cleaning assembly comprises a positioning frame, a rotator is clamped inside the positioning frame, the rotator is composed of a bearing and a rotating shaft, a plurality of first reinforcement rods and a plurality of second reinforcement rods are fixedly connected to the outside of the rotator, the other end of the first reinforcement rod is fixedly connected to the push plate, and the other end of the plurality of second reinforcement rods is fixedly connected to the cleaning blade, and the cleaning blade is a spiral blade;

[0023] The cleaning blades are overlapped with the inner wall of the conical shell, the push plate is overlapped in the conical shell, and the positioning frame is fixedly connected with the inner wall of the conical shell.

[0024] A catalytic cracking method of a catalytic cracking system comprises the following steps:

[0025] S1. When in use, the gas to be treated is injected along the bottom of the riser, and then the catalyst is connected to the catalyst interface, the feed oil is connected to the feed oil port, and the steam is connected to the injection port;

[0026] S2. When the gas enters the reaction chamber along the lifting pipe and the connecting pipe and the reaction is completed, the raw gas will move upward under the treatment of the primary cyclone separator and enter the stripping mechanism, and flow along the guide component in the gas shell. During the flow, the steam is continuously injected into the shell component along the gas injection component, so that the raw gas continuously collides with the steam to accelerate the reaction. Then the raw gas will enter the conical shell along the guide component. At this time, the external gas is in the conical shell. When the external gas is injected into the air inlet and enters the conical shell, the cleaning component rotates synchronously to clean the impurities adhering to the inside of the conical shell;

[0027] S2.1. When the gas enters the stripping shell, a large amount of gas will enter the spiral shell due to the obstruction of the spiral plate, and since the spiral shell is filled with porous media, the diffusion and flushing effect of water vapor is enhanced, and the surface of the raw material is modified or coated with the incoming steam and catalyst to improve its adsorption and desorption capacity for oil and gas, thereby accelerating the separation of the raw material and impurities in the raw material. As the raw material flows along the spiral shell and is isolated by the isolation plate, part of the raw material will enter the stripping shell and come into secondary contact with the steam and catalyst discharged from the exhaust pipe again;

[0028] S2.2, when the raw material enters the conical shell along the discharge shell above the stripping shell, the external gas will be discharged along the air inlet, thereby accelerating the rotation of the raw material gas in the conical shell, and through the centrifugal force generated by the rotation of the airflow, when the airflow containing solid particles enters the conical shell in the tangential direction, the airflow forms a rotational motion inside the separator. Due to the action of centrifugal force, the solid particles are thrown to the inner wall of the separator and deposited at the bottom under the action of gravity, while the clean airflow continues to rise to the top and flows out from the outlet. When the gas is discharged into the conical shell, it will drive the push plate to rotate, thereby synchronously driving the cleaning blades to rotate in the conical shell and clean the inside of the conical shell;

[0029] S3. When the porous medium in the spiral shell needs to be replaced or the medium needs to be adjusted according to different raw materials, it is only necessary to open the discharge valve under the spiral shell to discharge the medium, and after the medium is discharged, close the discharge valve and then open the injection valve to inject the appropriate medium;

[0030] S4. When the gas is discharged quickly along the exhaust pipe, the gas will squeeze the driving blades, causing the driving blades to drive the transmission rod and the rotating rod to rotate. At this time, the sliding rod, sliding sleeve and ball block arranged outside the transmission rod will continuously hit the guide shell, making the media of the guide shell fit better under the action of vibration.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention designs a guide component, a cleaning component and a shell component. When the gas enters the reaction chamber along the lifting pipe and the connecting pipe and the reaction is completed, the raw gas will move upward under the treatment of the primary cyclone separator and enter the stripping mechanism, and flow along the guide component in the gas shell. During the flow, the steam is continuously injected into the shell component along the gas injection component, so that the raw gas continuously collides with the steam to accelerate the reaction. Then the raw gas will enter the conical shell along the guide component. At this time, the external gas is in the conical shell. When the external gas is injected into the air inlet and enters the conical shell, the cleaning component rotates synchronously, thereby cleaning the sticky particles inside the conical shell. The attached impurities are cleaned up, so that during the catalytic cracking reaction of the device, the raw material gas can react with the steam multiple times and evenly through the cooperation of the guide component, ensuring that the raw material obtains sufficient steam for gasification, thereby reducing the risk of coking. At the same time, the guide component is used to limit the raw material, so that the gas can stably contact with the steam during the circulation process, and the isolation plate can ensure that the gas has a residence space, ensuring the reaction time between the raw material and the steam, further reducing the possibility of raw material non-gasification and coking, thereby ensuring the quality of the petroleum refined by the catalytic cracking system and the refining efficiency.

[0033] 2. The present invention also designs a guide component and a shell component. When the gas enters the stripping shell, a large amount of gas will enter the spiral shell due to the obstruction of the spiral plate. Since the spiral shell is filled with porous media, the diffusion and flushing effects of water vapor are enhanced. In combination with the entering steam and catalyst, the surface of the raw material is modified or coated to improve its adsorption and desorption capabilities for oil and gas, thereby accelerating the separation of the raw material and impurities in the raw material. As the raw material flows along the spiral shell and is isolated by the isolation plate, part of the raw material will enter the stripping shell and come into secondary contact with the steam and catalyst discharged from the exhaust pipe, so that the steam can be discharged evenly, thereby increasing the atomization effect. The atomization effect is improved and the raw material is homogenized to avoid the possibility of non-gasification and coking of the raw material, thereby ensuring the quality of the petroleum refined by the catalytic cracking system.

[0034] 3. The present invention also designs a cleaning component. When the raw material enters the conical shell along the discharge shell above the stripping shell, the external gas will be discharged along the air inlet, thereby accelerating the rotation of the raw material gas in the conical shell. The centrifugal force generated by the rotation of the airflow, when the airflow containing solid particles enters the conical shell in a tangential direction, the airflow forms a rotational motion inside the separator. Due to the action of the centrifugal force, the solid particles are thrown to the inner wall of the separator and deposited at the bottom under the action of gravity, while the clean airflow continues to rise to the top and flows out from the outlet. When the gas is discharged into the conical shell, it will drive the push plate to rotate, thereby synchronously driving the cleaning blades to rotate in the conical shell and cleaning the inside of the conical shell. On the one hand, the device can ensure the purification effect of the raw material gas, and on the other hand, it can synchronously clean the inside of the conical shell to avoid coking inside the conical shell due to catalyst adhesion and condensation of high-boiling point components. While ensuring the service life of the device, the quality of the accelerated raw material of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the structure of the lifting pipe mechanism of the present invention;

[0037] Figure 3 It is a schematic diagram of the cross-sectional structure of the lifting tube mechanism of the present invention;

[0038] Figure 4 It is a schematic diagram of the cross-sectional structure of the stripping mechanism of the present invention;

[0039] Figure 5 It is a schematic diagram of the cross-sectional structure of the housing assembly of the present invention;

[0040] Figure 6 It is a schematic diagram of the cross-sectional structure of the gas injection assembly of the present invention;

[0041] Figure 7 It is a schematic diagram of the cross-sectional structure of the vibration component of the present invention;

[0042] Figure 8 It is a schematic diagram of the cross-sectional structure of the sedimentation mechanism of the present invention.

[0043] Description of the numbers in the figure:

[0044] 1. Lifting pipe mechanism; 2. Separation mechanism; 3. Stripping mechanism; 4. Sedimentation mechanism;

[0045] 101, lifting pipe; 102, catalyst interface; 103, feed oil port; 104, spacer; 105, connecting pipe; 106, reaction chamber; 107, injection port;

[0046] 201. Primary cyclone separator;

[0047] 301, shell assembly; 302, gas injection assembly; 303, guide assembly; 304, vibration assembly;

[0048] 3011, stripping shell; 3012, mounting groove; 3013, discharge port; 3014, isolation plate; 3015, spiral plate; 3016, feed port;

[0049] 3021, annular conduit; 3022, gas injection pipe; 3023, exhaust pipe;

[0050] 3031, spiral shell; 3032, injection valve; 3033, discharge valve;

[0051] 3041, fixed frame; 3042, sleeve; 3043, rotating rod; 3044, driving blade; 3045, transmission rod; 3046, sliding sleeve; 3047, sliding rod; 3048, spring; 3049, ball block;

[0052] 401, conical shell; 402, air inlet; 403, cleaning assembly;

[0053] 4031, positioning frame; 4032, rotator; 4033, first reinforcement rod; 4034, push plate; 4035, second reinforcement rod; 4036, cleaning blade. DETAILED DESCRIPTION

[0054] like Figures 1 to 8 As shown, the present invention relates to a catalytic cracking system and a catalytic cracking method, comprising:

[0055] A lifting pipe mechanism 1, comprising a lifting pipe 101, a catalyst interface 102 and a feed oil port 103 arranged outside the lifting pipe 101, a spacer 104, a connecting pipe 105, a reaction chamber 106 and a material injection port 107 arranged outside the reaction chamber 106, wherein the spacer 104 is located in the lifting pipe 101, the connecting pipe 105 is located above the lifting pipe 101, and the upper part of the connecting pipe 105 is connected to the reaction chamber 106; and a separation mechanism 2, comprising a primary cyclone separator 201, the primary cyclone separator 201 is located below the stripping mechanism 3 and above the reaction chamber 106; and the stripping mechanism 3, comprising The shell assembly 301, the gas injection assembly 302 arranged outside the shell assembly 301, the guide shell and the vibration assembly 304, wherein the guide assembly 303 is located in the shell assembly 301, and the vibration assembly 304 is located in the gas injection assembly 302; and the sedimentation mechanism 4, including the conical shell 401, the gas inlet 402 and the cleaning assembly 403 arranged outside the conical shell 401, wherein the cleaning assembly 403 is arranged in the conical shell 401. By designing the guide assembly 303, the cleaning assembly 403 and the shell assembly 301, when the gas enters the reaction chamber 106 along the lifting pipe 101 and the connecting pipe 105 after the reaction is completed, the original The raw gas will move upward under the treatment of the primary cyclone separator 201 and enter the stripping mechanism 3, and flow along the guide component 303 in the gas shell. During the flow, steam is continuously injected into the shell component 301 along the gas injection component 302, so that the raw gas continuously collides with the steam to accelerate the reaction. Then the raw gas will enter the conical shell 401 along the guide component 303. At this time, the external gas is in the conical shell 401. When the external gas is injected into the air inlet 402 and enters the conical shell 401, the cleaning component 403 rotates synchronously, thereby cleaning the impurities adhering to the inside of the conical shell 401, so that the conical shell 401 is cleaned. During the catalytic cracking reaction, the guide component 303 cooperates with the raw material gas to react with the steam multiple times and evenly, ensuring that the raw material obtains sufficient steam for gasification, thereby reducing the risk of coking. At the same time, the guide component 303 is used to restrict the raw material so that the gas can stably contact with the steam during the circulation process, and the isolation plate 3014 can ensure that the gas has a residence space to ensure the reaction time between the raw material and the steam, further reducing the possibility of raw material non-gasification and coking, thereby ensuring the quality of the petroleum refined by the catalytic cracking system and the refining efficiency.

[0056] In an embodiment of the present invention, the outer wall of the lifting pipe 101 is connected to the catalyst interface 102 and the feed oil port 103, the catalyst interface 102 and the feed oil port 103 are both inclined, the other end of the catalyst interface 102 is inclined upward, and the feed oil port 103 is inclined downward, the number of the isolation plates 104 is several, and the several isolation plates 104 are staggered and inclined in the lifting pipe 101, the top end of the lifting pipe 101 is connected to the bottom end of the connecting pipe 105, and the top end of the connecting pipe 105 is connected to the bottom end of the reaction chamber 106. The bottom ends are connected, the outer wall below the reaction bin 106 is inclinedly provided with a plurality of injection ports 107, the separation mechanism 2 comprises a primary cyclone separator 201, the outer wall of the shell assembly 301 is connected to the gas injection assembly 302, the inner wall of the gas injection assembly 302 is fixedly connected to a plurality of vibration assemblies 304, the inner wall of the shell assembly 301 is fixedly connected to the guide assembly 303, the top end of the primary cyclone separator 201 is connected to the shell assembly 301, the bottom end of the primary cyclone separator 201 is connected to the top end of the reaction bin 106, The top of the shell component 301 is connected to the bottom of the sedimentation component. By designing the guide component 303 and the shell component 301, when the gas enters the stripping shell 3011, due to the obstruction of the spiral plate 3015, a large amount of gas will enter the spiral shell 3031, and because the spiral shell 3031 is filled with porous media, the diffusion and flushing effect of water vapor is enhanced, and the surface of the raw material is modified or coated with the incoming steam and catalyst to improve its adsorption and desorption ability of oil and gas, thereby accelerating the separation of the raw material and impurities in the raw material. As the raw material flows along the spiral shell 3031 and is isolated by the isolation plate 3014, part of the raw material will enter the stripping shell 3011 and contact the steam and catalyst discharged from the exhaust pipe 3023 again, so that the steam can be discharged evenly, thereby increasing the atomization effect, so that the atomization effect can be improved and the raw material is homogenized to avoid the possibility of ungasified and coked raw materials, thereby ensuring the quality of petroleum refined by the catalytic cracking system.

[0057] In an embodiment of the present invention, the sedimentation assembly includes a conical shell 401, the outer wall of the conical shell 401 is connected to the air inlet 402, the inner wall of the conical shell 401 is fixedly connected to the cleaning assembly 403, the bottom end of the conical shell 401 is connected to the top of the shell assembly 301, and the shell assembly 301 includes a stripping shell 3011, and a mounting groove 3012 is provided on the top of the stripping shell 3011. A discharge port 3013 and a feed port 3016 are respectively provided on the top and bottom of the stripping shell 3011. A plurality of isolation plates 301 are fixedly connected in the stripping shell 3011. 4. A spiral plate 3015 is fixedly connected in the stripping shell 3011, and a plurality of isolation plates 3014 are fixedly connected to the spiral plate 3015. The upper part of the spiral plate 3015 is mutually engaged with the guide assembly 303. The upper part of the stripping shell 3011 is connected to the bottom end of the conical shell 401 through the discharge port 3013. The feed port 3016 below the stripping shell 3011 is connected to the upper part of the primary cyclone separator 201. The gas injection assembly 302 is connected to the stripping shell 3011. A plurality of vibration assemblies 304 are located in the stripping shell 3011. By design, Cleaning assembly 403, when the raw material enters the conical shell 401 along the discharge shell above the stripping shell 3011, the external gas will be discharged along the air inlet 402, thereby accelerating the rotation of the raw material gas in the conical shell 401, so that the centrifugal force generated by the rotation of the air flow, when the air flow containing solid particles enters the conical shell 401 in a tangential direction, the air flow forms a rotating motion inside the separator, and due to the action of centrifugal force, the solid particles are thrown to the inner wall of the separator and deposited at the bottom under the action of gravity, while the clean air flow continues to rise to the top and exits. When the gas flows out of the outlet and is discharged into the conical shell 401, the push plate 4034 will be driven to rotate, thereby synchronously driving the cleaning blade 4036 to rotate in the conical shell 401 and cleaning the inside of the conical shell 401. On the one hand, the device can ensure the purification effect of the raw material gas, and on the other hand, it can synchronously clean the inside of the conical shell 401 to avoid coking inside the conical shell 401 due to catalyst adhesion and condensation of high-boiling point components, thereby ensuring the service life of the device and improving the quality of the accelerated raw materials of the device.

[0058] As another embodiment of the present invention, the gas injection assembly 302 includes a plurality of annular conduits 3021, and the plurality of annular conduits 3021 are connected through two gas injection pipes 3022, the inner walls of the plurality of annular conduits 3021 are respectively connected with a plurality of exhaust pipes 3023, the other ends of the exhaust pipes 3023 pass through the stripping shell 3011 and are located outside the guide assembly 303, the plurality of vibration assemblies 304 are arranged in the plurality of exhaust pipes 3023, the guide assembly 303 includes a spiral shell 3031, an injection valve 3032 is arranged above the spiral shell 3031, a discharge valve 3033 is arranged below the spiral shell 3031, the spiral shell 3031 is hollow, and the spiral shell 3031 There are several irregular partitions arranged inside, the injection valve 3032 is located above the mounting groove 3012, the discharge valve 3033 is located below the stripping shell 3011, the spiral shell 3031 is clamped on the top of the spiral plate 3015, and the vibration component 304 overlaps the spiral shell 3031. When the porous medium in the spiral shell 3031 needs to be replaced or the medium needs to be adjusted according to different raw materials, it is only necessary to open the discharge valve 3033 below the spiral shell 3031 to discharge the medium, and after the medium is discharged, close the discharge valve 3033 and then open the injection valve 3032 to inject the appropriate medium. The device can conveniently select and adjust the medium, thereby ensuring that its use effect is optimal. In addition, by replacing the medium multiple times instead of overall cleaning, the device not only maintains high efficiency, but also effectively avoids the decrease in processing efficiency caused by the cleaning process, and achieves smoother and more efficient operation.

[0059] As another embodiment of the present invention, the vibration assembly 304 includes a fixed frame 3041, a sleeve 3042 is clamped in the fixed frame 3041, a rotating rod 3043 is sleeved in the sleeve 3042, a driving blade 3044 is fixedly connected to the rotating rod 3043, one end of the rotating rod 3043 passes through the driving blade 3044 and is fixedly connected to one end of a transmission rod 3045, a plurality of sliding sleeves 3046 are fixedly connected to the transmission rod 3045, and the plurality of sliding sleeves 3046 are slidably connected to the sliding rods 304 7. A spring 3048 is provided in the sleeve 3046. The two ends of the spring 3048 are respectively fixedly connected to the lower side of the inner wall of the sleeve 3046 and the bottom end of the slide rod 3047. The top end of the slide rod 3047 is fixedly connected to a ball block 3049. The fixing frame 3041 is fixedly connected to the exhaust pipe 3023. The outer wall of the ball block 3049 overlaps the spiral shell 3031. The cleaning assembly 403 includes a positioning frame 4031. A rotator 4032 is clamped in the positioning frame 4031. The rotator 4032 is supported by a bearing. The rotator 4032 is composed of a plurality of first reinforcement rods 4033 and a plurality of second reinforcement rods 4035, the other end of the first reinforcement rod 4033 is fixedly connected to the push plate 4034, and the other end of the plurality of second reinforcement rods 4035 is fixedly connected to the cleaning blade 4036, the cleaning blade 4036 is a spiral blade, the cleaning blade 4036 overlaps the inner wall of the conical shell 401, the push plate 4034 overlaps the conical shell 401, and the positioning frame 4031 overlaps the conical shell 401. 1, when the gas is quickly discharged along the exhaust pipe 3023, the gas will squeeze the driving blade 3044, so that the driving blade 3044 drives the transmission rod 3045 and the rotating rod 3043 to rotate. At this time, the sliding rod 3047, the sliding sleeve 3046 and the ball block 3049 arranged outside the transmission rod 3045 will continue to hit the guide shell, so that the media of the guide shell are more closely fitted under the action of vibration, so as to avoid too many gaps between the media to affect the filtering and adsorption effect on the raw materials.

[0060] Working principle: This embodiment provides a catalytic cracking system and a catalytic cracking method. When in use, the gas to be treated is injected along the bottom of the riser 101, and then the catalyst is connected to the catalyst interface 102, the feed oil is connected to the feed oil port 103, and the steam is connected to the injection port 107;

[0061] When the gas enters the reaction chamber 106 along the lifting pipe 101 and the connecting pipe 105 and the reaction is completed, the raw gas will move upward under the treatment of the primary cyclone separator 201 and enter the stripping mechanism 3, and flow along the guide component 303 in the gas shell. During the flow, the steam is continuously injected into the shell component 301 along the gas injection component 302, so that the raw gas continuously collides with the steam to accelerate the reaction. Then the raw gas will enter the conical shell 401 along the guide component 303. At this time, the external gas is in the conical shell 401. When the external gas is injected into the air inlet 402 and enters the conical shell 401, the cleaning component 403 rotates synchronously, thereby cleaning the impurities adhering to the inside of the conical shell 401;

[0062] When the gas enters the stripping shell 3011, due to the obstruction of the spiral plate 3015, a large amount of gas will enter the spiral shell 3031, and since the spiral shell 3031 is provided with a porous medium filled therein, the diffusion and flushing effect of water vapor is enhanced, and the surface of the raw material is modified or coated with the steam and catalyst entering therein to improve its adsorption and desorption capacity for oil and gas, thereby accelerating the separation of the raw material and impurities in the raw material, and as the raw material flows along the spiral shell 3031 and is isolated by the isolation plate 3014, part of the raw material will enter the stripping shell 3011 and come into secondary contact with the steam and catalyst discharged from the exhaust pipe 3023 again;

[0063] When the raw material enters the conical shell 401 along the discharge shell above the stripping shell 3011, the external gas will be discharged along the air inlet 402, thereby accelerating the rotation of the raw material gas in the conical shell 401. When the airflow containing solid particles enters the conical shell 401 in a tangential direction, the airflow forms a rotational motion inside the separator due to the centrifugal force. Due to the action of the centrifugal force, the solid particles are thrown to the inner wall of the separator and deposited at the bottom under the action of gravity, while the clean airflow continues to rise to the top and flows out from the outlet. When the gas is discharged into the conical shell 401, it will drive the push plate 4034 to rotate, thereby synchronously driving the cleaning blade 4036 to rotate in the conical shell 401 and cleaning the inside of the conical shell 401;

[0064] When the porous medium in the spiral shell 3031 needs to be replaced or the medium needs to be adjusted according to different raw materials, it is only necessary to open the discharge valve 3033 below the spiral shell 3031 to discharge the medium, and after the medium is discharged, close the discharge valve 3033 and then open the injection valve 3032 to inject the appropriate medium;

[0065] When the gas is discharged quickly along the exhaust pipe 3023, the gas will squeeze the driving blade 3044, so that the driving blade 3044 drives the transmission rod 3045 and the rotating rod 3043 to rotate. At this time, the sliding rod 3047, the sliding sleeve 3046 and the ball block 3049 arranged outside the transmission rod 3045 will continue to hit the guide shell, so that the media of the guide shell are more closely fitted under the action of vibration.

[0066] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A catalytic cracking system, comprising a riser (101), a catalyst interface (102), a feed oil port (103) and a reaction chamber (106), characterized in that: include, A lifting pipe mechanism (1), comprising a lifting pipe (101), a catalyst interface (102) and a feed oil port (103) arranged outside the lifting pipe (101), a spacer (104), a connecting pipe (105), a reaction chamber (106), and a material injection port (107) arranged outside the reaction chamber (106), wherein the spacer (104) is located inside the lifting pipe (101), the connecting pipe (105) is located above the lifting pipe (101), and the upper part of the connecting pipe (105) is connected to the reaction chamber (106); and, The separation mechanism (2) comprises a primary cyclone separator (201), wherein the primary cyclone separator (201) is located below the stripping mechanism (3) and above the reaction chamber (106); and A stripping mechanism (3), comprising a shell assembly (301), a gas injection assembly (302) arranged outside the shell assembly (301), a guide shell and a vibration assembly (304), wherein the guide assembly (303) is located inside the shell assembly (301), and the vibration assembly (304) is located inside the gas injection assembly (302); and, A sedimentation mechanism (4) comprises a conical shell (401), an air inlet (402) arranged outside the conical shell (401), and a cleaning component (403), wherein the cleaning component (403) is arranged inside the conical shell (401); The shell assembly (301) comprises a stripping shell (3011), a mounting groove (3012) is provided on the top of the stripping shell (3011), a discharge port (3013) and a feed port (3016) are provided on the top and bottom of the stripping shell (3011), respectively, a plurality of isolation plates (3014) are fixedly connected inside the stripping shell (3011), a spiral plate (3015) is fixedly connected inside the stripping shell (3011), and the plurality of isolation plates (3014) are fixedly connected to the spiral plate (3015); The gas injection assembly (302) comprises a plurality of annular conduits (3021), and the plurality of annular conduits (3021) are connected via two gas injection pipes (3022), and the inner walls of the plurality of annular conduits (3021) are respectively connected to a plurality of exhaust pipes (3023); The guide assembly (303) comprises a spiral shell (3031), an injection valve (3032) is arranged above the spiral shell (3031), and a discharge valve (3033) is arranged below the spiral shell (3031); the spiral shell (3031) is hollow, and a plurality of irregular partitions are arranged inside the spiral shell (3031); The vibration component (304) comprises a fixed frame (3041), a sleeve (3042) is clamped inside the fixed frame (3041), a rotating rod (3043) is sleeved inside the sleeve (3042), a driving blade (3044) is fixedly connected to the outside of the rotating rod (3043), one end of the rotating rod (3043) passes through the driving blade (3044) and is fixedly connected to one end of a transmission rod (3045), a plurality of sliding sleeves (3046) are fixedly connected to the outside of the transmission rod (3045), and a sliding rod (3047) is slidably connected inside each of the plurality of sliding sleeves (3046), a spring (3048) is arranged inside the sliding sleeve (3046), two ends of the spring (3048) are respectively fixedly connected to the bottom of the inner wall of the sliding sleeve (3046) and the bottom end of the sliding rod (3047), and a ball block (3049) is fixedly connected to the top of the sliding rod (3047); The cleaning assembly (403) comprises a positioning frame (4031), a rotator (4032) is clamped inside the positioning frame (4031), the rotator (4032) is composed of a bearing and a rotating shaft, a plurality of first reinforcement rods (4033) and a plurality of second reinforcement rods (4035) are fixedly connected outside the rotator (4032), the other end of the first reinforcement rod (4033) is fixedly connected to the push plate (4034), and the other end of the plurality of second reinforcement rods (4035) is fixedly connected to the cleaning blade (4036), and the cleaning blade (4036) is a spiral blade.

2. The catalytic cracking system according to claim 1, characterized in that: The outer wall of the lifting pipe (101) is connected to the catalyst interface (102) and the feed oil port (103); the catalyst interface (102) and the feed oil port (103) are both arranged in an inclined manner; the other end of the catalyst interface (102) is inclined upward, and the feed oil port (103) is inclined downward; there are a plurality of isolation plates (104), and the plurality of isolation plates (104) are arranged in an alternating and inclined manner in the lifting pipe (101); the top end of the lifting pipe (101) is connected to the bottom end of the connecting pipe (105); the top end of the connecting pipe (105) is connected to the bottom end of the reaction chamber (106); and the outer wall below the reaction chamber (106) is inclinedly provided with a plurality of injection ports (107).

3. The catalytic cracking system according to claim 2, characterized in that: The separation mechanism (2) comprises a primary cyclone separator (201), the outer wall of the shell component (301) is connected to the gas injection component (302), the inner wall of the gas injection component (302) is fixedly connected to a plurality of vibration components (304), and the inner wall of the shell component (301) is fixedly connected to the guide component (303); The top end of the primary cyclone separator (201) is connected to the shell assembly (301), the bottom end of the primary cyclone separator (201) is connected to the top end of the reaction bin (106), and the top end of the shell assembly (301) is connected to the bottom end of the sedimentation assembly.

4. The catalytic cracking system according to claim 3, characterized in that: The sedimentation assembly comprises a conical shell (401), the outer wall of the conical shell (401) is connected to the air inlet (402), and the inner wall of the conical shell (401) is fixedly connected to the cleaning assembly (403); The bottom end of the conical shell (401) is in communication with the top of the housing assembly (301).

5. The catalytic cracking system according to claim 4, characterized in that: The upper part of the spiral plate (3015) is mutually engaged with the guide assembly (303); the upper part of the stripping shell (3011) is connected to the bottom end of the conical shell (401) via the discharge port (3013); the feed port (3016) below the stripping shell (3011) is connected to the upper part of the primary cyclone separator (201); the gas injection assembly (302) is connected to the stripping shell (3011); and a plurality of vibration assemblies (304) are located in the stripping shell (3011).

6. The catalytic cracking system according to claim 5, characterized in that: The other end of the exhaust pipe (3023) passes through the stripping shell (3011) and is located outside the guide assembly (303), and a plurality of vibration assemblies (304) are arranged inside the plurality of exhaust pipes (3023).

7. The catalytic cracking system according to claim 6, characterized in that: The injection valve (3032) is located above the mounting groove (3012), the discharge valve (3033) is located below the stripping shell (3011), the spiral shell (3031) is clamped on the top of the spiral plate (3015), and the vibration component (304) overlaps the spiral shell (3031).

8. The catalytic cracking system according to claim 7, characterized in that: The fixing frame (3041) is fixedly connected in the exhaust pipe (3023), and the outer wall of the ball block (3049) overlaps the spiral shell (3031).

9. The catalytic cracking system according to claim 8, characterized in that: The cleaning blade (4036) overlaps the inner wall of the conical shell (401), the push plate (4034) overlaps inside the conical shell (401), and the positioning frame (4031) is fixedly connected to the inner wall of the conical shell (401).

10. The catalytic cracking method of a catalytic cracking system according to claim 9, characterized in that: The following steps are involved: S1. When in use, the gas to be treated is injected along the bottom of the riser (101), and then the catalyst is connected to the catalyst interface (102), the feed oil is connected to the feed oil port (103), and the steam is connected to the injection port (107); S2. When the gas enters the reaction chamber (106) along the lifting pipe (101) and the connecting pipe (105) and the reaction is completed, the raw gas moves upward under the treatment of the primary cyclone separator (201) and enters the stripping mechanism (3), and flows along the guide component (303) in the gas shell. During the circulation, steam is continuously injected into the shell component (301) along the gas injection component (302), so that the raw gas continuously collides with the steam to accelerate the reaction. Subsequently, the raw gas enters the conical shell (401) along the guide component (303). At this time, the external gas is in the conical shell (401). When the external gas is injected into the air inlet (402) and enters the conical shell (401), the cleaning component (403) rotates synchronously, thereby cleaning the impurities adhering to the inside of the conical shell (401); S2.

1. When the gas enters the stripping shell (3011), a large amount of gas will enter the spiral shell (3031) due to the obstruction of the spiral plate (3015), and since the spiral shell (3031) is provided with a porous medium filled therein, the diffusion and flushing effect of water vapor is enhanced, and the surface of the raw material is modified or coated with the steam and the catalyst entering therein to improve its adsorption and desorption capacity for oil and gas, thereby accelerating the separation of the raw material and impurities in the raw material, and as the raw material flows along the spiral shell (3031) and is isolated by the isolation plate (3014), part of the raw material will enter the stripping shell (3011) and come into secondary contact with the steam and the catalyst discharged from the exhaust pipe (3023); S2.2, when the raw material enters the conical shell (401) along the discharge shell above the stripping shell (3011), the external gas is discharged along the air inlet (402), thereby accelerating the rotation of the raw material gas in the conical shell (401), and the centrifugal force generated by the rotation of the airflow, when the airflow containing solid particles enters the conical shell (401) in a tangential direction, the airflow forms a rotational motion inside the separator, and due to the action of the centrifugal force, the solid particles are thrown to the inner wall of the separator and deposited at the bottom under the action of gravity, while the clean airflow continues to rise to the top and flows out from the outlet, and when the gas is discharged into the conical shell (401), it drives the push plate (4034) to rotate, thereby synchronously driving the cleaning blade (4036) to rotate in the conical shell (401), and cleaning the inside of the conical shell (401); S3. When the porous medium in the spiral shell (3031) needs to be replaced or the medium needs to be adjusted according to different raw materials, it is only necessary to open the discharge valve (3033) below the spiral shell (3031) to discharge the medium, and after the medium is discharged, close the discharge valve (3033) and then open the injection valve (3032) to inject the medium; S4. When the gas is discharged quickly along the exhaust pipe (3023), the gas will squeeze the driving blade (3044), so that the driving blade (3044) drives the transmission rod (3045) and the rotating rod (3043) to rotate. At this time, the sliding rod (3047), the sliding sleeve (3046) and the ball block (3049) arranged outside the transmission rod (3045) will continue to hit the guide shell, so that the media of the guide shell are more closely fitted under the action of vibration.

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