Fluidized bed regenerator with mixer, oil agent mixer, regeneration system and application

Abstract

The invention discloses a fluidized bed regenerator with a mixer, an oil agent mixer, a regeneration system and application. The fluidized bed regenerator comprises the oil agent mixer and the fluidized bed regenerator, the oiling agent mixer comprises a mixer body and a joint arranged at the top of the mixer body, and the joint is communicated with the bottom of the fluidized bed regenerator so as to lift a mixture of a spent catalyst and fuel oil mixed in the mixer body into a chamber of the fluidized bed regenerator; at least one atomizing nozzle is arranged on the side wall of the mixer body; at least one material opening is formed in the side wall of the mixer body and is positioned below the atomizing nozzle; an air tap used for being externally connected with an air supply device is arranged at the bottom of the mixer body, so that a mixture is lifted into a chamber of the fluidized bed regenerator through the air tap and the air supply device. Due to premixing, the fuel oil can be uniformly distributed on the spent catalyst, and local high temperature is avoided in the combustion process, so that the catalyst is prevented from being damaged by sintering, and the loss of the catalyst is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fluidized catalytic conversion in petrochemical industry, and in particular to a fluidized bed regenerator with a mixer, an oil agent mixer, a regeneration system and applications. Background Art

[0002] In the petrochemical industry, fluidized catalytic conversion reactions are widely used in fluidized catalytic cracking (FCC), methanol to olefins (MTO / DMTO), methanol to aromatics (MTA), propane dehydrogenation (PDH) and other units, among which the regenerator is one of the core equipment, and its main function is to burn off the coke on the coked catalyst to restore the activity of the catalyst, and at the same time provide heat for the reactor. Some wax oil catalytic cracking, high-severity catalytic cracking with high gas production, and all PDH units require a lot of heat for the reaction, but the reaction coking rate is low. The heat release from the combustion of coke attached to the coked catalyst alone cannot meet the heat requirements for the reaction. The reaction system has a serious heat shortage and must rely on other means to provide heat, such as adding fuel oil to the regeneration system.

[0003] During the start-up phase of conventional catalytic cracking, fuel oil is directly injected from multiple points on the regenerator wall. This solution will cause the local temperature of the catalyst in the regenerator to reach above 1000°C, causing the catalyst to sinter and break, and increasing catalyst loss. If this solution is used to continuously replenish fuel oil during normal production, catalyst consumption will increase and the economic efficiency will be poor. If the amount of fuel oil supplemented in the regenerator is slightly large, it is easy to cause tail combustion, causing damage to key internal components such as the cyclone, thereby affecting the long-term and safe operation of the device. Summary of the invention

[0004] In order to avoid excessively high local temperatures of the catalyst in the regenerator, and thus avoid sintering and breakage of the catalyst, which would lead to excessive catalyst loss, a fluidized bed regenerator with a mixer, an oil agent mixer, a regeneration system and applications are provided in the embodiments of the present invention.

[0005] In a first aspect, an embodiment of the present invention provides a fluidized bed regenerator with a mixer, which may include: an oil agent mixer and a fluidized bed regenerator; wherein the oil agent mixer includes: a mixer body and a joint arranged at the top of the mixer body, the joint being communicated with the bottom of the fluidized bed regenerator to lift the mixture of the catalyst to be regenerated and the fuel oil mixed in the mixer body into the chamber of the fluidized bed regenerator;

[0006] At least one atomizing nozzle is arranged on the side wall of the mixer body, one end of the atomizing nozzle is located in the accommodating cavity of the mixer body, and the other end extends out of the accommodating cavity for externally connecting to a fuel oil supply pipeline;

[0007] At least one material port for supplying the catalyst to be produced into the accommodating cavity is provided on the side wall of the mixer body, and the material port is located below the atomizing nozzle;

[0008] A gas nozzle is provided at the bottom of the mixer body, and the gas nozzle is used to be connected to an external gas supply device so as to lift the mixture into the chamber of the fluidized bed regenerator through the supply device and the gas nozzle.

[0009] Optionally, a distribution plate or a distribution pipe with through holes is provided in the accommodating chamber, and the distribution plate or the distribution pipe is located below the material port.

[0010] Optionally, the fluidized bed regenerator comprises: a regenerator body, a distributor and a gas-solid separation device;

[0011] The regenerator body includes a chamber, the distributor is located at the lower part of the chamber, and the gas-solid separation device is located at the upper part of the chamber;

[0012] The bottom of the regenerator body is provided with a feed port connected to the joint and an air inlet for air intake, the top of the regenerator body is provided with an exhaust port connected to the gas outlet of the gas-solid separation device, and the feed port is connected to the bottom of the distributor.

[0013] Optionally, the fluidized bed regenerator with a mixer may further include: a dilute phase pipe, the outer diameter of the bottom of the dilute phase pipe matches the inner diameter of the chamber, the dilute phase pipe is located in the chamber to divide the chamber into an upper chamber and a lower chamber, the distributor is located in the lower chamber, and the gas-solid separation device is located in the upper chamber;

[0014] A gas-solid separation device is arranged on the upper part of the dilute phase pipe.

[0015] Optionally, the fluidized bed regenerator with a mixer may further include: a partition, which divides the chamber into an upper chamber and a lower chamber; the distributor is located in the lower chamber, and the gas-solid separation device is located in the upper chamber.

[0016] Optionally, the fluidized bed regenerator further includes: an external circulation pipeline; the external circulation pipeline is located outside the regenerator body and is connected to the bottom of the upper chamber and the lower chamber respectively.

[0017] Optionally, the distributor includes: a distributor main pipe and a plurality of distributor branches connected to the distributor main pipe; the bottom of the distributor main pipe is connected to the feed port.

[0018] Optionally, a material trough is provided on the distributor branch pipe.

[0019] In a second aspect, an embodiment of the present invention provides an oil agent mixer, which may include: a mixer body and a joint arranged at the top of the mixer body, the joint being used to communicate with the bottom of a fluidized bed regenerator to lift a mixture of a catalyst to be regenerated and fuel oil mixed in the mixer body into the fluidized bed regenerator;

[0020] At least one atomizing nozzle is arranged on the side wall of the mixer body, one end of the atomizing nozzle is located in the accommodating cavity of the mixer body, and the other end extends out of the accommodating cavity for externally connecting to a fuel oil supply pipeline;

[0021] At least one material port for supplying the catalyst to be produced into the accommodating cavity is provided on the side wall of the mixer body, and the material port is located below the atomizing nozzle;

[0022] A gas nozzle is provided at the bottom of the mixer body, and the gas nozzle is used to be connected to an external gas supply device so as to lift the mixture into the fluidized bed regenerator through the supply device and the gas nozzle.

[0023] Optionally, a distribution plate or a distribution pipe with through holes is provided in the accommodating chamber, and the distribution plate or the distribution pipe is located below the material port.

[0024] In a third aspect, an embodiment of the present invention provides a fluidized bed regeneration system, which may include: a fuel oil supply device, a material supply device, a gas supply device, and a fluidized bed regenerator with a mixer as described in the first aspect;

[0025] Among them, the fuel oil supply device is connected to the atomizing nozzle through a fuel oil supply pipeline; the material supply device is connected to the material port; and the air supply device is connected to the air nozzle.

[0026] In a fourth aspect, an embodiment of the present invention provides an application of a fluidized bed regenerator with a mixer as described in the first aspect in a fluidized bed regeneration system; wherein a mass ratio of the catalyst to be regenerated to the fuel oil is 3000:1 to 50:1.

[0027] The beneficial effects of the above technical solution provided in the embodiments of the present invention include at least:

[0028] The embodiments of the present invention provide a fluidized bed regenerator with a mixer, an oil agent mixer, a regeneration system and applications. Due to the pre-mixing, the fuel oil can be evenly distributed on the catalyst to be regenerated, avoiding the generation of local high temperature during the combustion process, thereby avoiding the sintering and destruction of the catalyst, and reducing the catalyst loss. Furthermore, after mixing in the above-mentioned oil agent mixer, efficient vaporization of the supplementary fuel oil and uniform coking of the catalyst to be regenerated can be achieved, thereby maximizing the supplementary combustion efficiency, reducing damage to the catalyst during the combustion process, and improving the reliability, stability and safety of the operation. Furthermore, the above-mentioned oil agent mixer can be quickly installed on the fluidized bed regenerator through a joint, which can realize the improvement of different types of fluidized bed regenerators.

[0029] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0030] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 A schematic diagram of an oil mixer provided in an embodiment of the present invention;

[0033] Figure 2 This is one of the structural diagrams of a fluidized bed regenerator with an oil agent mixer provided in an embodiment of the present invention;

[0034] Figure 3 This is the second structural diagram of the fluidized bed regenerator with an oil agent mixer provided in an embodiment of the present invention;

[0035] Figure 4 The third structural diagram of the fluidized bed regenerator with an oil agent mixer provided in an embodiment of the present invention;

[0036] Figure 5 A structural diagram of a distributor provided in an embodiment of the present invention;

[0037] Figure 6 It is a schematic structural diagram of a fluidized bed regeneration system provided in an embodiment of the present invention;

[0038] Among them, 1- fluidized bed regenerator with oil agent mixer; 2- material supply device; 3- fuel oil supply device; 4- air supply device;

[0039] 11- oil agent mixer; 12- fluidized bed regenerator;

[0040] 111-mixer body; 112-connector; 113-atomizing nozzle; 114-accommodating chamber; 115-material port; 116-air nozzle; 117-distribution plate or distribution pipe;

[0041] 121-regenerator body; 122-distributor; 123-gas-solid separation device; 124-chamber; 125-dilute phase pipe; 126-partition plate; 127-external circulation pipeline; 128-material outlet; 129-fluidizing medium inlet;

[0042] 1211 -feed port; 1212 -air inlet; 1213 -exhaust port; 1221 -distributor main pipe; 1222 -distributor branch pipe; 1241 -upper chamber; 1242 -lower chamber. DETAILED DESCRIPTION

[0043] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "far", "near", "front", "rear" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] An oil mixer is provided in an embodiment of the present invention. Figure 1 As shown, the oil agent mixer 11 may include: a mixer body 111 and a joint 112 disposed on the top of the mixer body 111, the joint 112 is used to connect with the fluidized bed regenerator 12 (refer to Figure 2 to Figure 4 The bottom of the mixer body 111 is connected to the bottom of the mixer body 111 to lift the mixture of the catalyst to be regenerated and the fuel oil mixed in the mixer body 111 to the fluidized bed regenerator 12; at least one atomizing nozzle 113 is provided on the side wall of the mixer body 111, and one end of the atomizing nozzle 113 is located in the accommodating cavity 114 of the mixer body 111, and the other end extends out of the accommodating cavity 114 for externally connecting the fuel oil supply device 3 (refer to Figure 6 The side wall of the mixer body 111 is provided with at least one material port 115 for supplying the catalyst to be produced into the accommodating chamber 114, and the material port 115 is located below the atomizing nozzle 113; the bottom of the mixer body 111 is provided with a gas nozzle 116, and the gas nozzle 116 is used to connect the external gas supply device 4 (refer to Figure 6 As shown), the mixture is lifted into the fluidized bed regenerator 12 through the supply device 4 and the gas nozzle 116.

[0047] The above-mentioned oil agent mixer provided in the embodiment of the present invention provides a mixing place for the catalyst to be regenerated and the fuel oil, which are pre-mixed in the oil agent mixer and then lifted to the fluidized bed regenerator. The sufficient mixing provides reliable fuel oil supplementary combustion for the fluidized catalytic conversion with insufficient heat. After mixing in the above-mentioned oil agent mixer, efficient vaporization of the supplementary fuel oil and uniform coking of the catalyst to be regenerated can be achieved, which maximizes the supplementary combustion efficiency, reduces damage to the catalyst during the combustion process, and improves the reliability, stability and safety of operation. Furthermore, the above-mentioned oil agent mixer can be quickly installed on the fluidized bed regenerator through a joint, which can realize the improvement of different types of fluidized bed regenerators.

[0048] In an optional embodiment, also refer to Figure 1 As shown, a distribution plate 117 or a distribution pipe 117 with through holes is provided in the accommodating chamber 114, and the distribution plate 117 or the distribution pipe 117 is located below the material port 115. The distribution plate or the distribution pipe in this embodiment can be used as a carrier for temporarily storing the catalyst to be regenerated, and the catalyst to be regenerated and the fuel oil can be mixed on the distribution plate or the distribution pipe, and after mixing, they are lifted to the fluidized bed regenerator through the lower gas nozzle.

[0049] In an embodiment of the present invention, a fluidized bed regenerator with a mixer is provided, referring to Figure 2 to Figure 4As shown, the fluidized bed regenerator 1 with a mixer may include: an oil agent mixer 11 and a fluidized bed regenerator 12; wherein the oil agent mixer 11 includes: a mixer body 111 and a joint 112 arranged at the top of the mixer body 111, the joint 112 is connected to the bottom of the fluidized bed regenerator 12 to lift the mixture of the catalyst to be regenerated and the fuel oil mixed in the mixer body 111 into the chamber 124 of the fluidized bed regenerator 12; at least one atomizing nozzle 113 is arranged on the side wall of the mixer body 111, and the atomizing nozzle 113 is arranged on the side wall of the mixer body 111. One end of the mixer body 111 is located in the accommodating chamber 114 of the mixer body 111, and the other end extends out of the accommodating chamber 114 for connecting to an external fuel oil supply device 3; at least one material port 115 is provided on the side wall of the mixer body 111 for supplying the catalyst to be generated into the accommodating chamber 114, and the material port 115 is located below the atomizing nozzle 113; a gas nozzle 116 is provided at the bottom of the mixer body 111, and the gas nozzle 116 is used for connecting to an external gas supply device 4, so as to lift the mixture into the chamber 124 of the fluidized bed regenerator 12 through the supply device 4 and the gas nozzle 116.

[0050] The working principle of the fluidized bed regenerator with a mixer in the embodiment of the present invention is as follows: the catalyst to be regenerated and the fuel oil are fully and evenly mixed in the oil agent mixer, and then the mixture is lifted into the fluidized bed regenerator through a gas nozzle, and the fuel oil and the coke on the catalyst to be regenerated are burned and converted into flue gas, and the regenerated catalyst is obtained after gas-solid separation.

[0051] In the embodiment of the present invention, due to the pre-mixing, the fuel oil can be evenly distributed on the catalyst to be generated, thereby avoiding the generation of local high temperature during the combustion process, thereby avoiding the sintering and destruction of the catalyst and reducing the catalyst loss.

[0052] In another optional embodiment, a distribution plate 117 or a distribution pipe 117 with through holes is provided in the accommodating chamber 114, and the distribution plate 117 or the distribution pipe 117 is located below the material port 115. In this embodiment, the distribution plate or the distribution plate can be used as a carrier for temporarily storing the catalyst to be regenerated, and is used for air distribution. The catalyst to be regenerated and the fuel oil can be mixed on the distribution plate, and after mixing, they are lifted to the fluidized bed regenerator through the lower air nozzle.

[0053] In another alternative embodiment, referring to Figure 2 to Figure 4As shown, the fluidized bed regenerator may include: a regenerator body 121, a distributor 122 and a gas-solid separation device 123; the regenerator body 121 includes a chamber 124, the distributor 122 is located at the lower part of the chamber 124, and the gas-solid separation device 123 is located at the upper part of the chamber 124; a feed port 1211 connected to the joint 112 and an air inlet 1212 for air intake are provided at the bottom of the regenerator body 121, an exhaust port 1213 connected to the air outlet of the gas-solid separation device 123 is provided at the top of the regenerator body 121, and the feed port 1211 is connected to the bottom of the distributor 122.

[0054] In this embodiment, the catalyst to be regenerated is evenly distributed on the distributor. During the combustion of fuel oil, gas is generated, carrying the regenerated catalyst to form flue gas. The flue gas passes through a gas-solid separation device to separate the gas (mostly carbon dioxide and carbon monoxide) and the catalyst, and the gas is discharged from the fluidized bed regenerator through the exhaust port. The catalyst can be enriched and discharged into other equipment for recycling (for example, the regenerated catalyst is discharged through the material outlet 128). It should be noted that the above-mentioned fuel oil can be a hydrocarbon substance, and the enriched catalyst can be further fluidized by a fluidizing medium (such as air). Figure 3 and Figure 4 As shown, the catalyst enters the upper chamber 1241 from the fluidizing medium inlet 129, so that the catalyst is in a fluidized state.

[0055] In the embodiment of the present invention Figure 2 The fluidized bed regenerator is a single-stage regenerator. In another optional embodiment, referring to Figure 3 As shown, the fluidized bed regenerator 1 with a mixer may also include: a dilute phase pipe 125, the bottom outer diameter of the dilute phase pipe 125 matches the inner diameter of the chamber 124, the dilute phase pipe 125 is located in the chamber 124 to divide the chamber 124 into an upper chamber 1241 and a lower chamber 1242, the distributor 122 is located in the lower chamber 1242, and the gas-solid separation device 123 is located in the upper chamber 1241; the upper part of the dilute phase pipe 125 is provided with a gas pipe separation device 123, that is, it is connected to the inlet of the gas-solid separation device 123.

[0056] In another alternative embodiment, referring to Figure 4 As shown, the fluidized bed regenerator 1 with a mixer may also include: a partition 126 , which divides the chamber 124 into an upper chamber 1241 and a lower chamber 1242 ; the distributor 122 is located in the lower chamber 1242 , and the gas-solid separation device 123 is located in the upper chamber 1241 .

[0057] Figure 3 The dilute phase tube is used to divide the chamber into two sections. Figure 4The chamber is divided into two sections, namely the upper chamber and the lower chamber, by using a partition. The lower chamber is mainly used as a combustion space, and the upper chamber is used as a gas-solid separation and regeneration catalyst enrichment space.

[0058] In another optional embodiment, the fluidized bed regenerator 12 may further include: an external circulation pipeline 127; the external circulation pipeline 127 is located outside the regenerator body 121 and is respectively connected to the bottom of the upper chamber 1241 and the lower chamber 1242. The external circulation pipeline in this embodiment is used to further burn the coke on the surface of the catalyst to be regenerated that is not fully burned to obtain a regenerated catalyst.

[0059] In another alternative embodiment, referring to Figure 5 As shown, the distributor 122 may include: a distributor main pipe 1221 and a plurality of distributor branches 1222 connected to the distributor main pipe 1221; Figure 2 to Figure 4 As shown, the bottom of the distributor main pipe 1221 is connected to the feed port 1211.

[0060] In this embodiment, the model, style, size and quantity of the distributor branch pipe are not specifically limited. Slots may also be provided on the periphery of the distributor main pipe, and the specification and quantity of the slots are not specifically limited.

[0061] In another optional embodiment, a material slot is provided on the branch pipe of the distributor, which can evenly distribute the mixture on the distributor, so that the mixture burns evenly during combustion, thus avoiding sintering and destruction of the catalyst due to local high temperature.

[0062] Based on the same inventive concept, a fluidized bed regeneration system is also provided in the embodiment of the present invention. Figure 6 As shown, the system may include: a fuel oil supply device 3, a material supply device 2, an air supply device 4 and the above-mentioned fluidized bed regenerator 1 with a mixer; wherein the fuel oil supply device 3 is connected to the atomizing nozzle 113 through a fuel oil supply pipeline; the material supply device 2 is connected to the material port 115; and the air supply device 4 is connected to the air nozzle 116.

[0063] Based on the same inventive concept, an embodiment of the present invention further provides an application of the above-mentioned fluidized bed regenerator with a mixer in a fluidized bed regeneration system; wherein the mass ratio of the catalyst to be regenerated and the fuel oil is 3000:1 to 50:1.

[0064] In this embodiment, the amount of fuel oil depends on the temperature at which the regenerated catalyst needs to be heated. The mass ratio of the regenerated catalyst to the fuel oil is set to 3000:1 to 50:1, which can not only meet the heating temperature requirement, but also enable a large amount of regenerated catalyst to undergo regeneration reaction, thereby improving the regeneration efficiency.

[0065] The above application in the embodiment of the present invention provides a fluidized bed regenerator supplementary combustion process method. By adopting the method of the present invention, low-priced fuel oil can be used to provide heat for the system, while avoiding local overheating of the fluidized bed, avoiding over-temperature breakage of the catalyst, and reducing catalyst consumption. The specific description and beneficial effects of the above fluidized bed regeneration system and application in the embodiment of the present invention can refer to the relevant description of the above fluidized bed regenerator with a mixer, and the embodiment of the present invention will not be repeated here.

[0066] Obviously, various changes and modifications may be made to the present invention by those skilled in the art without departing from the spirit and scope of the present invention. The present disclosure is not limited to the precise structure described above and shown in the accompanying drawings, and various changes and modifications may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims. Thus, if these changes and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these changes and modifications.

Claims

1. A fluidized bed regenerator with a mixer, characterized in that: include: An oil-agent mixer and a fluidized bed regenerator; wherein the oil-agent mixer comprises: a mixer body and a joint arranged at the top of the mixer body, the joint being communicated with the bottom of the fluidized bed regenerator to lift the mixture of the catalyst to be regenerated and the fuel oil mixed in the mixer body into the chamber of the fluidized bed regenerator; At least one atomizing nozzle is arranged on the side wall of the mixer body, one end of the atomizing nozzle is located in the accommodating cavity of the mixer body, and the other end extends out of the accommodating cavity for externally connecting to a fuel oil supply pipeline; At least one material port for supplying the catalyst to be produced into the accommodating cavity is provided on the side wall of the mixer body, and the material port is located below the atomizing nozzle; A gas nozzle is provided at the bottom of the mixer body, and the gas nozzle is used to be connected to an external gas supply device so as to lift the mixture into the chamber of the fluidized bed regenerator through the supply device and the gas nozzle.

2. The fluidized bed regenerator with a mixer according to claim 1, characterized in that: The fluidized bed regenerator comprises: a regenerator body, a distributor and a gas-solid separation device; The regenerator body includes a chamber, the distributor is located at the lower part of the chamber, and the gas-solid separation device is located at the upper part of the chamber; The bottom of the regenerator body is provided with a feed port connected to the joint and an air inlet for air intake, the top of the regenerator body is provided with an exhaust port connected to the gas outlet of the gas-solid separation device, and the feed port is connected to the bottom of the distributor.

3. The fluidized bed regenerator with a mixer according to claim 2, characterized in that: Also includes: A dilute phase pipe, wherein the outer diameter of the bottom of the dilute phase pipe matches the inner diameter of the chamber, the dilute phase pipe is located in the chamber to divide the chamber into an upper chamber and a lower chamber, the distributor is located in the lower chamber, and the gas-solid separation device is located in the upper chamber; A gas-solid separation device is arranged on the upper part of the dilute phase pipe.

4. The fluidized bed regenerator with a mixer according to claim 2, characterized in that: Also includes: A partition divides the chamber into an upper chamber and a lower chamber; the distributor is located in the lower chamber, and the gas-solid separation device is located in the upper chamber.

5. The fluidized bed regenerator with a mixer according to claim 3 or 4, characterized in that: The fluidized bed regenerator further comprises: an external circulation pipeline; the external circulation pipeline is located outside the regenerator body and is connected to the bottom of the upper chamber and the lower chamber respectively.

6. The fluidized bed regenerator with a mixer according to any one of claims 2 to 4, characterized in that: The distributor comprises: a distributor main pipe and a plurality of distributor branches communicated with the distributor main pipe; the bottom of the distributor main pipe is communicated with the feed port.

7. The fluidized bed regenerator with a mixer according to claim 6, characterized in that: A material trough is provided on the branch pipe of the distributor.

8. An oil mixer, characterized in that: include: A mixer body and a joint arranged at the top of the mixer body, the joint being used to communicate with the bottom of a fluidized bed regenerator to lift the mixture of the catalyst to be regenerated and the fuel oil mixed in the mixer body into the fluidized bed regenerator; At least one atomizing nozzle is arranged on the side wall of the mixer body, one end of the atomizing nozzle is located in the accommodating cavity of the mixer body, and the other end extends out of the accommodating cavity for externally connecting to a fuel oil supply pipeline; At least one material port for supplying the catalyst to be produced into the accommodating cavity is provided on the side wall of the mixer body, and the material port is located below the atomizing nozzle; A gas nozzle is provided at the bottom of the mixer body, and the gas nozzle is used to be connected to an external gas supply device so as to lift the mixture into the fluidized bed regenerator through the supply device and the gas nozzle.

9. A fluidized bed regeneration system, characterized in that: include: A fuel oil supply device, a material supply device, a gas supply device and a fluidized bed regenerator with a mixer as claimed in any one of claims 1 to 7; Among them, the fuel oil supply device is connected to the atomizing nozzle through a fuel oil supply pipeline; the material supply device is connected to the material port; and the air supply device is connected to the air nozzle.

10. Use of a fluidized bed regenerator with a mixer as claimed in any one of claims 1 to 7 in a fluidized bed regeneration system; wherein: The mass ratio of the spent catalyst to the fuel oil is 3000:1 to 50:1.

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