Method and device for improving activity of catalytic cracking equilibrium agent

Abstract

The application discloses a catalytic cracking balance agent activity promotion method and device, belongs to the balance agent activity promotion field, solves the balance agent recovery, activity promotion and other recycling in the prior art, and all need to be offline after the balance agent is unloaded from the device. Revive, unable to realize the effect of online activity promotion and recycling of the balance agent. Including: the balance agent in the regenerator is transported to the external heat exchanger for heat exchange. Nitrogen is introduced into the external heat exchanger to purge the balance agent. The activator is preheated to form a mixed gas with nitrogen. The mixed gas is transported to the external heat exchanger and uniformly contacted with the balance agent. Nitrogen is introduced into the external heat exchanger to purge the activity promotion balance agent. After the purging is completed, the activity promotion balance agent is transported to the regenerator. The application can realize online activity promotion of the balance agent, does not need to unload the balance agent from the device, can not only improve the regeneration efficiency of the balance agent, avoid a large amount of balance agent discharge and waste, but also can improve the recycling effect of the balance agent.

Description

Technical Field

[0001] This application relates to the field of balancer activity enhancement technology, and in particular to a method and apparatus for enhancing the activity of catalytic cracking balancers. Background Technology

[0002] The balance agent in fluidized bed catalytic cracking units typically uses molecular sieves to provide catalytic reaction active centers. Due to the long-term operation of the balance agent in a high-temperature and high-humidity environment, the framework structure of the molecular sieve in the balance agent will undergo dealuminization, resulting in a decrease in the activity of the balance agent, which cannot meet the operating requirements of industrial units. This not only leads to the discharge and waste of a large amount of low-activity balance agent, but also increases the consumption of fresh balance agent, thereby affecting the economic, environmental and safety aspects of the unit operation.

[0003] Currently, the main methods used for recycling and enhancing the activity of balance agents include magnetic separation, organic acid washing, and inorganic acid washing. However, in the process of balance agent recovery and activity enhancement, the existing methods all require the balance agent to be unloaded from the device and reactivated offline, which cannot achieve the effect of online activity enhancement and recycling of balance agents. Summary of the Invention

[0004] This application provides a method and apparatus for enhancing the activity of a catalytic cracking equilibrium agent, which solves the problem that in the prior art, when recycling and enhancing the activity of the equilibrium agent, it is necessary to unload the equilibrium agent from the device and revive it offline, which cannot achieve the effect of online activity enhancement and recycling of the equilibrium agent.

[0005] In a first aspect, embodiments of the present invention provide a method for enhancing the activity of a catalytic cracking equilibrium agent, the method comprising:

[0006] The balance agent in the regenerator is transported to the external heat exchanger for heat exchange, so that the balance agent is cooled to 350°C to 650°C.

[0007] Nitrogen gas is introduced into the external heat exchanger to purge the balancing agent so that the O2 concentration of non-condensable gas in the external heat exchanger is not higher than 5 vol%.

[0008] The activator is preheated and then mixed with nitrogen to form a gas mixture. The preheating temperature of the activator is 160℃~200℃.

[0009] The mixed gas is delivered into the external heat exchanger and comes into uniform contact with the balancing agent to perform an activity enhancement treatment on the balancing agent to obtain an activity-enhanced balancing agent;

[0010] Nitrogen gas is introduced into the external heat exchanger to purge the activity-enhancing balancing agent;

[0011] After purging, the activity-enhancing balancing agent is delivered to the regenerator.

[0012] In conjunction with the first aspect, in one possible implementation, prior to introducing nitrogen gas into the external heat exchanger to purge the activity-enhancing balancing agent, the method further includes:

[0013] The mixed gas is cooled to 150°C–180°C by heat exchange and then transported to a condensation tank to recover the activator.

[0014] In conjunction with the first aspect, in one possible implementation, the step of introducing nitrogen gas into the external heat exchanger to purge the balancing agent, so that the O2 concentration of non-condensable gases in the external heat exchanger does not exceed 5 vol%, specifically includes:

[0015] Nitrogen gas is introduced into the external heat exchanger to purge the balancing agent for 5 to 20 minutes to ensure that the O2 concentration of non-condensable gases in the external heat exchanger does not exceed 5 vol.

[0016] In conjunction with the first aspect, in one possible implementation, the activator is an aluminum salt;

[0017] The aluminum salt is one or more of aluminum chloride, aluminum nitrate, and aluminum sulfate.

[0018] In conjunction with the first aspect, in one possible implementation, the activator, after preheating, forms a mixed gas with nitrogen, and the preheating temperature of the activator is 160℃~200℃, specifically including:

[0019] The activator, after preheating, forms a mixed gas with nitrogen, wherein the nitrogen concentration in the mixed gas is 3 vol% to 35 vol%, and the preheating temperature of the activator is 160°C to 200°C.

[0020] In conjunction with the first aspect, in one possible implementation, the molar ratio of the balancing agent to the activator is 1:0.005 to 1:0.5.

[0021] In conjunction with the first aspect, in one possible implementation, the step of conveying the mixed gas into the external heat exchanger to uniformly contact the balancing agent, thereby performing an activity-enhancing treatment on the balancing agent to obtain an activity-enhanced balancing agent, specifically includes:

[0022] The mixed gas is transported into the external heat exchanger and uniformly contacted with the balancing agent for 30 to 90 minutes to enhance the activity of the balancing agent and obtain an activity-enhanced balancing agent.

[0023] In conjunction with the first aspect, in one possible implementation, the step of introducing nitrogen gas into the external heat exchanger to purge the activity-enhancing balancing agent specifically includes:

[0024] Nitrogen gas is introduced into the external heat exchanger to purge the activity-enhancing balancing agent, so that the content of the activator in the non-condensable gas is not higher than 1 vol.

[0025] Secondly, embodiments of the present invention provide a device for enhancing the activity of a catalytic cracking balancer, applicable to the aforementioned method for enhancing the activity of a catalytic cracking balancer, comprising a regenerator, an external heat exchanger, a condensing storage tank, and a preheating tank; the outlet of the regenerator and the inlet of the external heat exchanger are connected through a first pipe, the first pipe being equipped with a first valve; the outlet of the external heat exchanger and the inlet of the regenerator are connected through a second pipe, the second pipe being equipped with a second valve; the condensing storage tank and the outlet of the external heat exchanger are connected; the preheating tank and the first inlet of the external heat exchanger are connected, the preheating tank being configured to preheat the activator; the second inlet of the external heat exchanger is connected to a nitrogen storage tank.

[0026] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0027] This invention provides a method for enhancing the activity of a catalytic cracking equilibrium agent. The method includes: transferring the equilibrium agent from a regenerator to an external heat exchanger for heat exchange, thereby cooling the equilibrium agent to 350°C–650°C; purging the equilibrium agent with nitrogen gas into the external heat exchanger to ensure that the O2 concentration of non-condensable gases in the external heat exchanger does not exceed 5 vol%; forming a mixed gas mixture with a preheated activator at a temperature of 160°C–200°C; conveying the mixed gas into the external heat exchanger for uniform contact with the equilibrium agent to enhance its activity, thus obtaining an activity-enhanced equilibrium agent; purging the activity-enhanced equilibrium agent with nitrogen gas into the external heat exchanger; and finally, conveying the activity-enhanced equilibrium agent to the regenerator. This application enables online activity enhancement of the equilibrium agent without removing it from the device, which not only improves the regeneration efficiency of the equilibrium agent and avoids large-scale discharge and waste of the equilibrium agent, but also improves the recycling effect of the equilibrium agent. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A flowchart illustrating the method for enhancing the activity of a catalytic cracking equilibrium agent provided in an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the catalytic cracking balancer activity enhancement device provided in the embodiments of this application.

[0031] Icons: 1-Regenerator; 2-External heat exchanger; 3-Condensation tank; 4-Preheating tank; 5-First valve; 6-Second valve; 7-Nitrogen tank. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0034] like Figure 1 As shown, this embodiment of the invention provides a method for enhancing the activity of a catalytic cracking equilibrium agent, comprising:

[0035] Step 101: The equilibrium agent in regenerator 1 is transferred to external heat exchanger 2 for heat exchange, thereby cooling the equilibrium agent to 350℃~650℃. In practical applications, before being transferred to external heat exchanger 2, the equilibrium agent needs to be charred in air within regenerator 1 to remove carbon from the equilibrium agent, thus restoring its activity. Specifically, since the temperature of the equilibrium agent during carbon removal in regenerator 1 is relatively high, reaching 710℃, it is necessary to cool the equilibrium agent to ensure that it can return to the normal reaction temperature.

[0036] Step 102: Nitrogen gas is introduced into the external heat exchanger 2 to purge the balancing agent, ensuring that the O2 concentration of non-condensable gases inside the external heat exchanger 2 does not exceed 5 vol%. In practical applications, purging the balancing agent with nitrogen creates a relatively inert environment inside the external heat exchanger 2, thereby reducing the oxygen content and preventing the reaction between air and the activator. Specifically, the balancing agent is a molecular sieve-containing balancing agent for fluidized bed catalytic reactions, including one or more symbiotic molecular sieves or mixtures of molecular sieves such as ZSM, SAPO, and Y types.

[0037] Step 103: After preheating, the activator forms a mixed gas with nitrogen. The preheating temperature of the activator is 160℃~200℃. In practical applications, the activator is solid at room temperature and becomes gaseous between 160℃ and 200℃. Specifically, since the flow rate of nitrogen can be controlled, nitrogen is used as the carrier gas for the activator to maintain a constant flow rate of the activator entering the external heat exchanger 2, thereby controlling the amount of activator added. In addition, nitrogen can increase the dispersibility of the activator, allowing for more uniform contact between the activator and the balancing agent.

[0038] Step 104: The mixed gas is transported to the external heat exchanger 2 and brought into uniform contact with the balancing agent to enhance its activity, thus obtaining an activity-enhanced balancing agent. Specifically, after the mixed gas is transported to the external heat exchanger 2, the activator in the mixed gas reacts with the balancing agent to obtain an activity-enhanced balancing agent, thereby improving the regeneration efficiency of the balancing agent, realizing online activity enhancement of the balancing agent, and avoiding problems such as large-scale discharge and waste of balancing agent.

[0039] Step 105: Purge the activator balancing agent into the external heat exchanger 2 with nitrogen gas. In practical applications, the balancing agent and activator will react and leave some activator behind. Nitrogen purging can completely remove the activator to prevent it from flowing back into the regenerator 1 and affecting it.

[0040] Step 106: After purging, the activity-enhancing balancing agent is transported to regenerator 1. In practical applications, the activity-enhancing balancing agent significantly increases the micro-reaction activity compared to the balancing agent before activity enhancement, which can solve the problem of high consumption of fresh balancing agent and large-scale discharge and waste of balancing agent in fluidized bed catalytic cracking units due to insufficient activity of balancing agent in the reaction system.

[0041] This invention provides a method for enhancing the activity of a catalytic cracking equilibrium agent. The method includes: transferring the equilibrium agent from a regenerator 1 to an external heat exchanger 2 for heat exchange, thereby cooling the equilibrium agent to 350°C–650°C; purging the equilibrium agent with nitrogen gas into the external heat exchanger 2 to ensure that the O2 concentration of non-condensable gases in the external heat exchanger 2 does not exceed 5 vol%; forming a mixed gas with a preheated activator at a temperature of 160°C–200°C; conveying the mixed gas into the external heat exchanger 2 for uniform contact with the equilibrium agent to enhance its activity and obtain an enhanced equilibrium agent; purging the enhanced equilibrium agent with nitrogen gas into the external heat exchanger 2; and finally, conveying the enhanced equilibrium agent back to the regenerator 1. This invention enables online activity enhancement of the equilibrium agent without requiring it to be removed from the device, thus improving the regeneration efficiency of the equilibrium agent, avoiding large-scale discharge and waste, and enhancing the recycling effect of the equilibrium agent.

[0042] Specifically, before introducing nitrogen gas into the external heat exchanger 2 to purge the activity-enhancing balancing agent, the process also includes:

[0043] After the mixed gas is cooled to 150℃~180℃ through heat exchange, it is transported to the condensation tank 3 to recover the activator. In practical applications, there will be residue after the mixed gas and the balancing agent react. Therefore, cooling the mixed gas first and then recovering the activator in the mixed gas can not only avoid the waste of activator, but also significantly reduce the amount of activator used, thereby reducing the cost of improving the activity of the balancing agent.

[0044] In practical applications, nitrogen gas is introduced into the external heat exchanger 2 to purge the balancing agent, ensuring that the O2 concentration of non-condensable gases within the external heat exchanger 2 does not exceed 5 vol%. Specifically, this includes:

[0045] Nitrogen gas is introduced into the external heat exchanger 2 to purge the balancing agent for 5 to 20 minutes to ensure that the O2 concentration of non-condensable gases in the external heat exchanger 2 does not exceed 5 vol%. Specifically, purging the balancing agent with nitrogen gas for 5 to 20 minutes reduces the O2 concentration of non-condensable gases in the external heat exchanger 2 and prevents the air from reacting with the activator.

[0046] Specifically, the activator is an aluminum salt. The aluminum salt is one or more of aluminum chloride, aluminum nitrate, and aluminum sulfate.

[0047] In practical applications, the activator is preheated and then forms a mixed gas with nitrogen. The preheating temperature of the activator is 160℃~200℃, specifically including:

[0048] After the activator is preheated, it forms a mixed gas with nitrogen. The nitrogen concentration in the mixed gas is 3 vol% to 35 vol%, and the preheating temperature of the activator is 160℃ to 200℃.

[0049] Specifically, the molar ratio of the balancing agent to the activator is 1:0.005 to 1:0.5.

[0050] In practical applications, the mixed gas is transported into the external heat exchanger 2 and brought into uniform contact with the balancing agent to enhance its activity, resulting in an activity-enhanced balancing agent. Specifically, this includes:

[0051] The mixed gas is conveyed into the external heat exchanger 2 and uniformly contacted with the balancing agent for 30 to 90 minutes to enhance the activity of the balancing agent, thus obtaining an activity-enhanced balancing agent. In practical applications, when the temperature of the balancing agent is high, the contact time between the mixed gas and the balancing agent is relatively short; when the temperature of the balancing agent is low, the contact time between the mixed gas and the balancing agent is relatively long.

[0052] In practical applications, nitrogen gas is introduced into the external heat exchanger 2 to purge the activity-enhancing balancing agent, specifically including:

[0053] Nitrogen gas is introduced into the external heat exchanger 2 to purge the activator and balancer so that the activator content in the non-condensable gas does not exceed 1 vol.

[0054] To more clearly demonstrate the present invention, specific operational examples are given below:

[0055] Example 1:

[0056] The balance agent in regenerator 1 is transported to external heat exchanger 2 for heat exchange, so that the balance agent is cooled to 580°C.

[0057] Nitrogen gas is introduced into the external heat exchanger 2 to purge the balancing agent for 10 minutes to ensure that the O2 concentration of non-condensable gas in the external heat exchanger 2 does not exceed 5 vol.

[0058] After the activator is preheated, it forms a mixed gas with nitrogen. The nitrogen concentration in the mixed gas is 15 vol%, and the preheating temperature of the activator is 180℃.

[0059] The balancing agent is calculated based on SiO2, and the molar ratio of the balancing agent to the activator is 1:0.005.

[0060] The mixed gas is transported to the external heat exchanger 2 and uniformly contacted with the balancing agent for 30 minutes to enhance the activity of the balancing agent and obtain the first activity-enhanced balancing agent.

[0061] Example 2:

[0062] The balance agent in regenerator 1 is transported to external heat exchanger 2 for heat exchange, so that the balance agent is cooled to 580°C.

[0063] Nitrogen gas is introduced into the external heat exchanger 2 to purge the balancing agent for 10 minutes to ensure that the O2 concentration of non-condensable gas in the external heat exchanger 2 does not exceed 5 vol.

[0064] After the activator is preheated, it forms a mixed gas with nitrogen. The nitrogen concentration in the mixed gas is 20 vol%, and the preheating temperature of the activator is 180℃.

[0065] The balancing agent is calculated based on SiO2, and the molar ratio of the balancing agent to the activator is 1:0.05.

[0066] The mixed gas is transported to the external heat exchanger 2 and uniformly contacted with the balancing agent for 60 minutes to enhance the activity of the balancing agent and obtain the second activity-enhanced balancing agent.

[0067] Example 3:

[0068] The balance agent in regenerator 1 is transported to external heat exchanger 2 for heat exchange, so that the balance agent is cooled to 580°C.

[0069] Nitrogen gas is introduced into the external heat exchanger 2 to purge the balancing agent for 10 minutes to ensure that the O2 concentration of non-condensable gas in the external heat exchanger 2 does not exceed 5 vol.

[0070] After the activator is preheated, it forms a mixed gas with nitrogen. The nitrogen concentration in the mixed gas is 30 vol%, and the preheating temperature of the activator is 180℃.

[0071] The balancing agent is calculated based on SiO2, and the molar ratio of the balancing agent to the activator is 1:0.1.

[0072] The mixed gas is transported to the external heat exchanger 2 and uniformly contacted with the balance agent for 30 minutes to enhance the activity of the balance agent and obtain the activity-enhanced balance agent 3.

[0073] Example 4:

[0074] The balance agent in regenerator 1 is transported to external heat exchanger 2 for heat exchange, so that the balance agent is cooled to 580°C.

[0075] Nitrogen gas is introduced into the external heat exchanger 2 to purge the balancing agent for 10 minutes to ensure that the O2 concentration of non-condensable gas in the external heat exchanger 2 does not exceed 5 vol.

[0076] After the activator is preheated, it forms a mixed gas with nitrogen. The nitrogen concentration in the mixed gas is 10 vol%, and the preheating temperature of the activator is 180℃.

[0077] The balancing agent is calculated based on SiO2, and the molar ratio of the balancing agent to the activator is 1:0.5.

[0078] The mixed gas is transported to the external heat exchanger 2 and uniformly contacted with the balancing agent for 90 minutes to enhance the activity of the balancing agent and obtain the activity-enhanced balancing agent four.

[0079] Comparative Example 1:

[0080] The equilibrium agent after use of the catalytic cracking unit is used to obtain a comparative equilibrium agent one.

[0081] Comparative Example 2:

[0082] Before using the catalytic cracking unit, the balancing agent was subjected to hydrothermal treatment at 800℃ for 4 hours to obtain the second balancing agent.

[0083] Microreactive activity tests were performed on the balancing agents obtained from Example 1, Example 2, Example 3, Example 4, Comparative Example 1, and Comparative Example 2. The results are shown in Table 1.

[0084] Table 1. Test table of microreactive properties of balancer

[0085]

[0086] Table 1 shows that the micro-reaction activity of the balancing agent in Examples 1, 2, 3 and 4 is significantly improved. In particular, the balancing agent in Example 3 achieves excellent regeneration effect. That is, the balancing agent activity enhancement method of this application can realize the online activity enhancement of the balancing agent, which can not only improve the regeneration efficiency of the balancing agent and avoid a large amount of balancing agent discharge and waste, but also improve the recycling of the balancing agent. At the same time, the balancing agent has almost no impact on its wear index after in-situ regeneration.

[0087] like Figure 2 As shown, this embodiment of the invention provides a device for enhancing the activity of a catalytic cracking equilibrium agent. This device is applicable to the above-mentioned method for enhancing the activity of a catalytic cracking equilibrium agent, and includes a regenerator 1, an external heat exchanger 2, a condensation tank 3, and a preheating tank 4. In practical applications, the external heat exchanger 2 is equipped with a coil, and water flows through the coil. After the water vaporizes, it carries away heat, thereby cooling the equilibrium agent.

[0088] In practical applications, the outlet of regenerator 1 and the inlet of external heat exchanger 2 are connected by a first pipe, on which a first valve 5 is installed. The outlet of external heat exchanger 2 and the inlet of regenerator 1 are connected by a second pipe, on which a second valve 6 is installed. Specifically, when it is necessary to transfer the balancing agent in regenerator 1 to external heat exchanger 2, the first valve 5 is opened, and the first valve 5 is closed after the transfer is completed; when it is necessary to transfer the activity-enhancing balancing agent in external heat exchanger 2 to regenerator 1 for reuse, the second valve 6 is opened, and the second valve 6 is closed after the transfer is completed.

[0089] Continue to refer to Figure 1As shown, the outlets of the condensate storage tank 3 and the external heat exchanger 2 are connected. The preheating tank 4 is connected to the first inlet of the external heat exchanger 2, and the preheating tank 4 is configured to preheat the activator. The second inlet of the external heat exchanger 2 is connected to the nitrogen storage tank 7. Specifically, when this catalytic cracking balance agent activity enhancement device is used, the first valve 5 is opened first, and the balance agent in the regenerator 1 enters the external heat exchanger 2 through the first pipe. Then the first valve 5 is closed, and the balance agent undergoes heat exchange in the external heat exchanger 2. After that, nitrogen gas is introduced into the external heat exchanger 2 to purge the balance agent. Then, the activator is transported to the preheating tank 4 for preheating to turn the activator into a gas. After preheating, the activator forms a mixed gas with nitrogen gas. Then, the mixed gas is transported to the external heat exchanger 2 to react with the balance agent to obtain the activity enhancement balance agent. Then, nitrogen gas is introduced into the external heat exchanger 2 to purge the activity enhancement balance agent. Finally, the second valve 6 is opened to transport the purged activity enhancement balance agent to the regenerator 1 for reuse. This application enables online activity enhancement of the balancer without removing it from the device. This not only improves the regeneration efficiency of the balancer and avoids the discharge and waste of large amounts of balancer, but also enhances the recycling effect of the balancer.

[0090] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0091] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A method for improving the activity of a catalytic cracking equilibrium agent, characterized in that, include: The balancing agent in the regenerator (1) is transported to the external heat exchanger (2) for heat exchange, so that the balancing agent is cooled to 350°C~650°C; Nitrogen gas is introduced into the external heat exchanger (2) to purge the balancing agent so that the O2 concentration of the non-condensable gas in the external heat exchanger (2) is not higher than 5 vol%. The activator is preheated and then mixed with nitrogen to form a gas mixture. The preheating temperature of the activator is 160℃~200℃. The mixed gas is transported into the external heat exchanger (2) and comes into uniform contact with the balancing agent to perform an activity enhancement treatment on the balancing agent to obtain an activity-enhanced balancing agent; Nitrogen gas is introduced into the external heat exchanger (2) to purge the activity-enhancing balancing agent; After purging, the activity-enhancing balancing agent is delivered to the regenerator (1). Before introducing nitrogen gas into the external heat exchanger (2) to purge the active balancing agent, the method further includes: cooling the mixed gas to 150°C~180°C and then transporting it to the condensation tank (3) to recover the activator; The activator is an aluminum salt; the aluminum salt is one or more of aluminum chloride, aluminum nitrate, and aluminum sulfate. The activator, after preheating, forms a mixed gas with nitrogen, and the nitrogen concentration in the mixed gas is 3 vol% to 35 vol%.

2. The method for promoting the activity of a catalytic cracking equilibrium agent according to claim 1, characterized in that, The step of introducing nitrogen gas into the external heat exchanger (2) to purge the balancing agent, so that the O2 concentration of non-condensable gas in the external heat exchanger (2) is not higher than 5 vol%, specifically includes: Nitrogen gas is introduced into the external heat exchanger (2) to purge the balancing agent for 5 min to 20 min, so that the O2 concentration of the non-condensable gas in the external heat exchanger (2) is not higher than 5 vol.

3. The method of claim 1, wherein the catalyst is a zeolite. 2 The activator, after preheating, forms a mixed gas with nitrogen. The preheating temperature of the activator is 160℃~200℃, specifically including: The preheating temperature of the activator is 160℃~200℃.

4. The method of claim 1, wherein the catalyst is a zeolite. The molar ratio of the balancing agent to the activator is 1:0.005 to 1:0.

5.

5. The method of claim 1, wherein the catalyst is a zeolite. 5 The process of delivering the mixed gas into the external heat exchanger (2) to uniformly contact the balancing agent, thereby enhancing the activity of the balancing agent to obtain an activity-enhanced balancing agent, specifically includes: The mixed gas is transported to the external heat exchanger (2) and uniformly contacted with the balancing agent for 30 min to 90 min to perform an activity enhancement treatment on the balancing agent to obtain an activity-enhanced balancing agent.

6. The method of claim 1, wherein the catalyst is a zeolite. 5 The step of introducing nitrogen gas into the external heat exchanger (2) to purge the activity-enhancing balancing agent specifically includes: Nitrogen gas is introduced into the external heat exchanger (2) to purge the activity-enhancing balancing agent so that the content of the activator in the non-condensable gas is not higher than 1 vol.

7. A catalytic cracking equilibrium agent activity enhancement device, characterized by, The method for enhancing the activity of the catalytic cracking balancer according to any one of claims 1 to 6 includes a regenerator (1), an external heat exchanger (2), a condensation tank (3), and a preheating tank (4). The outlet of the regenerator (1) and the inlet of the external heat exchanger (2) are connected by a first pipe, and a first valve (5) is provided on the first pipe. The outlet of the external heat exchanger (2) and the inlet of the regenerator (1) are connected by a second pipe, and a second valve (6) is provided on the second pipe. The outlets of the condensate storage tank (3) and the external heat exchanger (2) are connected; The preheating tank (4) is connected to the first air inlet of the external heat exchanger (2), and the preheating tank (4) is configured as a preheating activator; The second air inlet of the external heat exchanger (2) is connected to the nitrogen storage tank (7).

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