A control method, device, equipment and medium for stabilizer column oil-gas separation

Abstract

The application discloses a kind of stable column oil-gas separation control method, device, equipment and medium, belong to oil refining chemical industry field, control method includes: obtaining the product information of stable column;According to product information, it is judged whether product quality is qualified;If product quality is unqualified, then light gasoline is discharged from the intermediate material outlet of stable column;After light gasoline is discharged, control stable column carries out oil-gas separation processing, and obtains qualified liquefied gas and stable gasoline.The application increases the intermediate material outlet in the stable column, and the product is qualified without being used.If it cannot realize the qualification of liquefied gas and stable gasoline by appropriately increasing reflux ratio, the intermediate material outlet is used, and the light gasoline material is self-pressured to the main fractionating column top liquid separator or the fresh raw material buffer tank of catalytic cracking device, which reduces the difficulty of realizing the qualification of liquefied gas and stable gasoline, avoids the substantial benefit loss caused by the shutdown of catalytic cracking device, and ensures the long-period operation of stable column.

Description

Technical Field

[0001] This invention belongs to the field of oil refining and chemical technology, and specifically relates to a control method, device, equipment and medium for oil-gas separation in a stabilizer tower. Background Technology

[0002] Catalytic cracking units are crucial secondary processing units in oil refineries, primarily producing liquefied petroleum gas (LPG), stabilized gasoline, and diesel fuel. A catalytic cracking unit comprises a reaction regeneration system, a main fractionation system, and an absorption stabilization system. The absorption stabilization system refines and separates the crude gasoline from the main fractionation system, yielding LPG and stabilized gasoline that meet the processing requirements of downstream units or the requirements for product delivery. The stabilization tower, as the main distillation tower in the absorption stabilization system, is responsible for efficiently separating de-ethaned gasoline to obtain LPG and stabilized gasoline. Currently, in related technologies, if the stabilization tower detects substandard LPG or gasoline quality and increasing the reflux ratio fails to produce qualified products, the stabilization tower needs to be shut down for maintenance. This leads to the shutdown of the entire catalytic cracking unit, severely impacting its operational efficiency.

[0003] A Chinese journal article (Summary of Process Optimization of Absorption Stabilization System in a Catalytic Cracking Unit) published a method to increase the reflux ratio to meet liquefied petroleum gas (LPG) product specifications. While increasing the reflux ratio can improve LPG product specifications to some extent, there are still instances where product quality fails to meet standards even after increasing the reflux ratio.

[0004] Therefore, in order to avoid downtime for maintenance when defective products are found and to improve the working efficiency of the stabilizer, it is urgent to solve the technical problem of providing a control method that can efficiently separate oil and gas in the stabilizer and avoid downtime for maintenance. Summary of the Invention

[0005] To address the above problems, this invention discloses a control method for oil-gas separation in a stabilizer tower, comprising the following steps:

[0006] Obtain product information for stabilizer towers;

[0007] Determine whether the product quality is up to standard based on the product information;

[0008] If the product quality is substandard, the light gasoline will be discharged from the intermediate material outlet of the stabilizer tower.

[0009] After the light gasoline is discharged, the control and stabilization tower performs oil-gas separation treatment to obtain qualified liquefied gas and stabilized gasoline.

[0010] Furthermore, the procedure of discharging light gasoline from the intermediate material outlet of the stabilizer tower if the product quality is substandard includes the following steps:

[0011] If the product quality is substandard, increase the reflux flow rate of the stabilizer tower, thereby increasing the reflux ratio of the stabilizer tower.

[0012] After adjusting the reflux ratio to the set time, the product information of the stabilizer tower is obtained again, and the product quality is judged based on the product information.

[0013] Furthermore, the step of discharging light gasoline from the intermediate material outlet of the stabilizer tower if the product quality is substandard includes the following steps:

[0014] Determine whether it is necessary to reduce the production volume of stable gasoline;

[0015] If it is necessary to reduce the product quantity of stabilized gasoline, the light gasoline is discharged from the intermediate material outlet of the stabilizer tower and then transported to the feed buffer tank.

[0016] Furthermore, the process of determining whether to reduce the quantity of stabilized gasoline includes the following steps:

[0017] If it is not necessary to reduce the product quantity of stabilized gasoline, then the light gasoline is discharged from the intermediate material outlet of the stabilizer and sent to the top separator of the main fractionation column.

[0018] Furthermore, the volume ratio of the discharged light gasoline to the total amount of light gasoline in the stabilizer is 5-10%.

[0019] Furthermore, the intermediate material outlet is located between the fourth and sixth trays of the stabilizer tower, facing downwards from the top.

[0020] Furthermore, the volume fraction of pentane and higher hydrocarbon components in the liquefied gas is less than or equal to a first preset threshold.

[0021] The vapor pressure of the stabilized gasoline is less than or equal to a second preset threshold.

[0022] Furthermore, the process parameters for the oil-gas separation treatment are as follows:

[0023] The reflux ratio of the stabilizer column is 3-6, and the temperature of the top condenser is 35℃-45℃.

[0024] The present invention also discloses a control device for oil-gas separation in a stabilizer tower, comprising:

[0025] The acquisition unit is used to acquire product information about the stabilization tower.

[0026] The processing unit is used to determine whether the product quality is qualified based on the product information, and if the product quality is not qualified, to discharge the light gasoline from the intermediate material outlet of the stabilizer tower.

[0027] The control unit is used to control the stabilizer tower to perform oil-gas separation after the light gasoline is discharged, so as to obtain qualified liquefied gas and stabilized gasoline.

[0028] The present invention also discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described control method for oil-gas separation in a stabilizer tower.

[0029] The present invention also discloses a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described control method for oil-gas separation in a stabilizer tower.

[0030] Compared with the prior art, the embodiments of the present invention have at least the following advantages: The present invention adds an intermediate material outlet in the stabilizer tower, which is not activated when the product is qualified. If it is found that appropriately increasing the reflux ratio cannot achieve the qualification of LPG and stabilized gasoline, the intermediate material outlet is activated, and the extracted light gasoline material is self-pressurized to the liquid separator at the top of the main fractionation tower or the fresh feed buffer tank of the catalytic cracking unit. The extraction of intermediate material from the stabilizer tower will simultaneously reduce the difficulty of achieving the qualification of LPG and stabilized gasoline, reduce the volume fraction of C5+ (pentane and above hydrocarbon components) of LPG and the vapor pressure of stabilized gasoline, so that the product is qualified, avoid the significant economic loss caused by the shutdown of the catalytic cracking unit, and ensure the long-term operation of the stabilizer tower.

[0031] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0033] Figure 1 A schematic flowchart of a control method for oil-gas separation in a stabilizer tower according to an embodiment of the present invention is shown.

[0034] Figure 2 A schematic flowchart of the control method for oil-gas separation in a stabilizer tower according to an embodiment of the present invention is shown in Figure 2.

[0035] Figure 3 A schematic diagram of a catalytic cracking unit according to an embodiment of the present invention is shown;

[0036] Figure 4A schematic diagram of a control device according to an embodiment of the present invention is shown;

[0037] Figure 5 A schematic diagram of an electronic device according to an embodiment of the present invention is shown.

[0038] Reference numerals: 1. Control device; 2. Electronic equipment; 3. Raw material buffer tank; 4. Main fractionation column; 5. Top separator; 6. Absorption column; 7. Reabsorption column; 8. Desorption column; 9. Stabilizer; 10. Acquisition unit; 11. Processing unit; 12. Control unit; 13. Regenerator; 14. Riser reactor; 21. Memory; 22. Processor. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 embodiments of the present invention, not all embodiments. 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.

[0040] like Figure 1 As shown, the present invention proposes a control method for oil-gas separation in a stabilizer tower, comprising:

[0041] S101, Begin.

[0042] S102. Obtain the product information output by the stabilizer tower 9.

[0043] S103. Determine whether the product quality is qualified based on the product information; if yes, proceed to step S105; if no, proceed to step S104.

[0044] S104. Discharge the light gasoline in stabilizer tower 9 from the intermediate material outlet of stabilizer tower 9. When discharging the light gasoline, the pressure of stabilizer tower 9 is 0.8MPa-1.2MPa and the temperature is 80℃-110℃.

[0045] After S105 and light gasoline are discharged, the control and stabilization tower 9 performs oil-gas separation treatment to obtain qualified liquefied gas and stabilized gasoline.

[0046] S106, End.

[0047] In some embodiments, the process parameters for oil-gas separation are:

[0048] The reflux ratio of the stabilizer column is 3-6, and the temperature of the top condenser is 35℃-45℃.

[0049] According to the control method for oil-gas separation in the stabilizer tower provided by the present invention, by inspecting the products fractionated in stabilizer tower 9, in the event of product quality problems, a portion of the light gasoline requiring fractionation in stabilizer tower 9 is discharged from the intermediate material outlet of stabilizer tower 9. Light gasoline is the overlapping portion between the liquefied petroleum gas at the top of stabilizer tower 9 and the stabilized gasoline at the bottom. By extracting this overlapping portion separately as an intermediate product through the intermediate material outlet, the light product liquefied petroleum gas and the heavy product stabilized gasoline in stabilizer tower 9 can achieve qualification under the existing fractionation process, thereby reducing the difficulty of achieving qualification for liquefied petroleum gas and stabilized gasoline. When stabilizer tower 9 cannot continuously maintain separation efficiency, there is no need for shutdown maintenance, thus ensuring the operational efficiency of the catalytic cracking unit.

[0050] In the above embodiments, the step of discharging the light gasoline in the stabilizer tower 9 from the intermediate material outlet of the stabilizer tower 9 specifically includes:

[0051] When it is necessary to reduce the amount of stabilized gasoline produced, the light gasoline in the stabilizer tower 9 is discharged from the intermediate material outlet and then transported to the raw material buffer tank 3.

[0052] In this embodiment, after a portion of the light gasoline that needs to be fractionated in the stabilizer tower 9 is discharged from the intermediate material outlet of the stabilizer tower 9, the light gasoline is transported to the feed buffer tank 3 and enters the riser reactor 14 for cracking and other reactions. In this way, the light gasoline can be controlled to react again, thereby reducing the amount of stabilized gasoline produced while ensuring that the quality of the liquefied gas and stabilized gasoline fractionated from the stabilizer tower 9 is up to standard.

[0053] In the above embodiments, the step of discharging the light gasoline in the stabilizer tower 9 from the intermediate material outlet of the stabilizer tower 9 specifically includes:

[0054] When it is not necessary to reduce the amount of stabilized gasoline produced, the light gasoline in the stabilizer 9 is discharged from the intermediate material outlet and then transported to the top separator 5 of the main fractionation column 4.

[0055] In this embodiment, after a portion of the light gasoline requiring fractionation in the stabilizer tower 9 is discharged from the intermediate material outlet of the stabilizer tower 9, the light gasoline is transported to the top separator tank 5 of the main fractionation tower 4. This allows the raw material in the top separator tank 5 of the main fractionation tower 4 to continue flowing into the absorption stabilization system, that is, to flow back into the stabilizer tower 9 for product fractionation. In this way, without reducing the amount of stabilized gasoline produced, the quality of the liquefied gas and stabilized gasoline fractionated from the stabilizer tower 9 can still be guaranteed to be up to standard.

[0056] The top separator 5 is a device between the main fractionation system and the absorption stabilization system. After the crude gasoline in the main fractionation column 4 is discharged, it flows into the top separator 5, and then flows from the top separator 5 into the absorption stabilization system for rectification and separation.

[0057] like Figure 2 As shown in the figure, an embodiment of the present invention provides a control method for oil-gas separation in a stabilizer tower, comprising the following steps:

[0058] S201, Begin.

[0059] S202. Obtain the product information output by the stabilizer tower 9.

[0060] S203. Determine whether the product quality is qualified based on the product information; if yes, proceed to step S209; if no, proceed to step S204.

[0061] S204. Increase the reflux flow rate of stabilizer tower 9, thereby increasing the top reflux ratio of stabilizer tower 9.

[0062] S205. After adjusting the reflux ratio and setting the time, obtain the product information output by the stabilizer tower 9 again, and determine whether the product quality is qualified based on the product information; if yes, proceed to step S209; if no, proceed to step S206. For example, the set time is 5 minutes.

[0063] S206. Determine whether it is necessary to reduce the product quantity of stabilized gasoline. If yes, proceed to step S207; if no, proceed to step S208.

[0064] S207. After the light gasoline in the stabilizer tower 9 is discharged from the intermediate material outlet, it is transported to the raw material buffer tank 3, and step S209 is executed.

[0065] S208. After the light gasoline in the stabilizer tower 9 is discharged from the intermediate material outlet, it is transported to the top liquid separator 5 of the main fractionation tower 4, and S209 is executed.

[0066] S209 and control stabilization tower 9 perform oil-gas separation treatment to obtain qualified liquefied petroleum gas and stabilized gasoline.

[0067] S210, End.

[0068] According to the control method for oil-gas separation in the stabilizer tower provided by the present invention, under normal operation of the catalytic cracking unit, the product information output by stabilizer tower 9 is acquired in real time. When it is determined that the quality of the product output by stabilizer tower 9 is unqualified, it indicates that the production efficiency of stabilizer tower 9 has decreased. Firstly, the oil-gas separation efficiency is improved by increasing the reflux ratio at the top of stabilizer tower 9, ensuring that the liquefied petroleum gas (LPG) and stabilized gasoline products are qualified. If increasing the reflux ratio fails to achieve qualified LPG and stabilized gasoline products, the present invention further utilizes the intermediate material outlet in stabilizer tower 9, self-pressurizing the extracted light gasoline material to the top separator 5 of the main fractionation tower 4 or the fresh feedstock buffer tank 3 of the catalytic cracking unit. Since the overlapping portion of light gasoline is extracted separately through the intermediate material outlet, the light product LPG and heavy product stabilized gasoline in stabilizer tower 9 are qualified under the existing fractionation process. This reduces the difficulty of achieving qualified LPG and stabilized gasoline, that is, it reduces the volume fraction of pentane and higher hydrocarbon components in LPG and the vapor pressure of stabilized gasoline, thus ensuring product qualification. This invention employs a dual approach: "increasing the reflux ratio at the top of stabilizer tower 9" and "discharging the light gasoline in stabilizer tower 9 from the intermediate material outlet of stabilizer tower 9". This addresses the risk that the separation efficiency of stabilizer tower 9 may not be guaranteed during long-term operation, thus preventing the need for shutdown and maintenance of stabilizer tower 9. This avoids the shutdown of the entire catalytic cracking unit, which could severely impact the unit's operational efficiency and reduce significant economic losses caused by shutdowns.

[0069] The volume ratio of the discharged light gasoline to the total amount of light gasoline in stabilizer tower 9 is 5-10%.

[0070] In the above embodiments, the volume fraction of pentane and above hydrocarbon components in the liquefied gas meets the first preset threshold.

[0071] In this embodiment, the volume fraction is the ratio of the converted volume of each component in the mixture to the total volume. By limiting the volume fraction of pentane and above hydrocarbon components, that is, the ratio of the converted volume of pentane and above hydrocarbon components to the total volume meets a first preset threshold, the quality of liquefied gas can be guaranteed within the preset threshold, and excessive impurities in the liquefied gas can be avoided.

[0072] Furthermore, the first preset threshold is less than or equal to 0.025. Within this preset threshold, the quality of the liquefied gas can be further guaranteed, and excessive impurities in the liquefied gas can be avoided.

[0073] In the above embodiments, the vapor pressure of the stable gasoline meets the second preset threshold.

[0074] In this embodiment, vapor pressure refers to the pressure at which a liquid is converted into a gas at a certain temperature. That is, the pressure of gasoline after it evaporates into gas meets a second preset threshold. Within this preset threshold, the stability of gasoline is better.

[0075] Furthermore, the second preset threshold is less than or equal to 65 kPa. Within this preset threshold, the stability of the gasoline can be further guaranteed, and the quality of the gasoline can be improved.

[0076] In the above embodiment, the intermediate material outlet is located between the fourth and sixth trays from top to bottom at the top of the stabilizer tower 9.

[0077] In this embodiment, by setting the intermediate material outlet in the middle of the stabilizer tower 9, and considering that the light gasoline in the middle of the stabilizer tower 9 is generally not fractionated, this effectively prevents liquefied petroleum gas (LPG) and stabilized gasoline from flowing out of the intermediate material outlet. It is understood that if the intermediate material outlet were located at the top or bottom of the stabilizer tower 9, the LPG in the upper part or the stabilized gasoline in the lower part might be discharged during the discharge of light gasoline, thus affecting the fractionation efficiency.

[0078] like Figure 3 As shown, the catalytic cracking process in this invention includes all processes in the catalytic cracking family, such as fluidized bed catalytic cracking, residue catalytic cracking, and MIP (multi-isoalkane production) catalytic cracking. Basically, all catalytic cracking processes consist of three parts: a reaction regeneration system, a main fractionation system, and an absorption stabilization system. In various types of catalytic cracking process units, the fractionation system and the absorption stabilization system are the same. The absorption stabilization system typically includes an absorber 6, a desorption tower 8, and a stabilization tower 9. Its main function is to separate rich gas and crude gasoline through absorption and rectification to obtain liquefied petroleum gas (LPG) and stabilized gasoline. A conventional stabilization tower 9 is a rectification tower. The de-ethaned gasoline from the desorption tower 8 is fractionated in the stabilization tower 9. The top product is LPG, and the bottom product is stabilized gasoline with acceptable vapor pressure. The catalytic cracking stabilization tower 9 of this invention includes the stabilization tower 9 of all the aforementioned catalytic cracking family process units.

[0079] The absorption stabilization system may also include a reabsorption tower 7 to use stabilized gasoline and crude gasoline as absorbents to reabsorb hydrocarbon components (hydrocarbons with more than 3 carbon atoms) in the rich gas, thus turning it into lean gas.

[0080] The reaction regeneration system includes a raw material buffer tank 3, which stores the raw materials used to generate liquefied gas and stable gasoline.

[0081] The main fractionation system includes a main fractionation column 4 and a top separator 5 located at the outlet of the main fractionation column 4. The top separator 5 is a device between the main fractionation system and the absorption stabilization system, which discharges crude gasoline from the main fractionation column 4 into the top separator 5, and then flows from the top separator 5 into the absorption stabilization system for rectification and separation.

[0082] The regenerator 13 is connected to the riser reactor 14, which is connected to the raw material buffer tank 3 and the main fractionation tower 4 respectively.

[0083] The top of the main fractionation column 4 is connected to the top separator 5; the top separator 5 is connected to the absorption column 6.

[0084] Absorption tower 6 is connected to reabsorption tower 7 and desorption tower 8 respectively;

[0085] Desorption tower 8 is connected to stabilization tower 9; reabsorption tower 7 is connected to the top of stabilization tower 9;

[0086] The middle section of the stabilizer tower 9 has an intermediate material outlet, which is connected to the raw material buffer tank 3 and the top liquid separator 5 via pipelines.

[0087] like Figure 4 As shown, based on the same inventive concept, the present invention also discloses a control device 1 for oil-gas separation in a stabilizer tower, comprising:

[0088] Acquisition unit 10 is used to acquire product information of stabilization tower 9;

[0089] Processing unit 11 is used to determine whether the product quality is qualified based on product information, and if the product quality is not qualified, to discharge light gasoline from the intermediate material outlet of stabilizer tower 9.

[0090] The control unit 12 is used to control the stabilizing tower 9 to perform oil-gas separation after the light gasoline is discharged, so as to obtain qualified liquefied gas and stabilized gasoline.

[0091] The processing unit 11 in the control device 1 for oil-gas separation in the stabilizer tower is also used to increase the top reflux ratio of the stabilizer tower 9 when the product quality is unqualified, to obtain the product information output by the stabilizer tower 9 again, and to judge whether the product quality is qualified again based on the product information.

[0092] The specific implementation process of the functions and roles of each unit in the above device can be found in the implementation process of the corresponding steps in the above method, and will not be repeated here.

[0093] For the apparatus embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The apparatus embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separate. Some or all of the units can be selected to achieve the purpose of the present invention according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0094] like Figure 5As shown, based on the same inventive concept, this invention also discloses an electronic device 2, including a memory 21 (e.g., non-volatile memory), a processor 22, and a computer program stored in the memory 21 and executable on the processor 22. When the processor 22 executes the computer program, it implements the aforementioned control method for oil-gas separation in a stabilizer tower, which is equivalent to the control device 1 for oil-gas separation in a stabilizer tower as described above. Of course, the processor 22 can also be used to process other data or perform calculations. This electronic device 2 can be a PC, server, terminal, or other similar device.

[0095] The electronic device 2 may also include: memory, network interface, and internal bus. In addition to these components, it may include other hardware, which will not be described in detail here.

[0096] It should be noted that the aforementioned electronic device 2 can be implemented by software. As a logical device, it is formed by the processor 22 of the electronic device 2 reading the computer program instructions stored in the non-volatile memory into memory and running them.

[0097] Based on the same inventive concept, the present invention also proposes a computer-readable storage medium storing a computer program, which, when executed by processor 22, implements the above-described control method for oil-gas separation in a stabilizer tower.

[0098] Alternatively, the storage medium may be a non-transitory computer-readable storage medium, such as a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device.

[0099] Based on the same inventive concept, embodiments of the present invention also provide a computer program product, including a computer program that, when executed by processor 22, implements the control method for oil-gas separation in the stabilizer tower in any of the above possible implementations.

[0100] In embodiments of the present invention, the terms "first," "second," and "third" are used only for descriptive purposes and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in embodiments of the present invention according to the specific circumstances.

[0101] Furthermore, although the operations are described in a specific order, this should be understood as requiring that such operations be performed in a specific order or sequential order, or requiring that all illustrated operations be performed to achieve the desired result. In certain environments, multitasking and parallel processing may be advantageous. Similarly, although several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the invention. Certain features described in the context of individual embodiments may also be implemented in combination in a single implementation. Conversely, various features described in the context of a single implementation may also be implemented individually or in any suitable sub-combination in multiple implementations.

[0102] Although the present invention 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for oil-gas separation in a stabilizer tower, characterized in that, Includes the following steps: Obtain product information for stabilizer towers; Determine whether the product quality is up to standard based on the product information; If the product quality is substandard, the light gasoline will be discharged from the intermediate material outlet of the stabilizer tower. After the light gasoline is discharged, the control and stabilization tower performs oil-gas separation treatment to obtain qualified liquefied gas and stabilized gasoline.

2. The control method for oil-gas separation in a stabilizer tower according to claim 1, characterized in that, If the product quality is substandard, the following steps are included before discharging the light gasoline from the intermediate material outlet of the stabilizer: If the product quality is substandard, increase the reflux flow rate of the stabilizer tower, thereby increasing the reflux ratio of the stabilizer tower. After adjusting the reflux ratio to the set time, the product information of the stabilizer tower is obtained again, and the product quality is judged based on the product information.

3. The control method for oil-gas separation in a stabilizer tower according to claim 1, characterized in that, If the product quality is substandard, the process of discharging light gasoline from the intermediate material outlet of the stabilizer includes the following steps: Determine whether it is necessary to reduce the production volume of stable gasoline; If it is necessary to reduce the product quantity of stabilized gasoline, the light gasoline is discharged from the intermediate material outlet of the stabilizer tower and then transported to the feed buffer tank.

4. The control method for oil-gas separation in a stabilizer tower according to claim 3, characterized in that, After determining whether it is necessary to reduce the product quantity of stabilized gasoline, the following steps are included: If it is not necessary to reduce the product quantity of stabilized gasoline, then the light gasoline is discharged from the intermediate material outlet of the stabilizer and sent to the top separator of the main fractionation column.

5. The control method for oil-gas separation in a stabilizer tower according to claim 3 or 4, characterized in that, The volume ratio of the discharged light gasoline to the total amount of light gasoline in the stabilizer is 5-10%.

6. The control method for oil-gas separation in a stabilizer tower according to claim 1, characterized in that, The intermediate material outlet is located between the fourth and sixth trays of the stabilizer tower, facing downwards from the top.

7. The control method for oil-gas separation in a stabilizer tower according to claim 1, characterized in that, The volume fraction of pentane and higher hydrocarbon components in the liquefied gas is less than or equal to a first preset threshold. The vapor pressure of the stabilized gasoline is less than or equal to a second preset threshold.

8. The control method for oil-gas separation in a stabilizer tower according to claim 1, characterized in that, The process parameters for the oil-gas separation treatment are as follows: The reflux ratio of the stabilizer column is 3-6, and the temperature of the top condenser is 35℃-45℃.

9. A control device for oil-gas separation in a stabilizer tower, characterized in that, include: The acquisition unit is used to acquire product information about the stabilization tower. The processing unit is used to determine whether the product quality is qualified based on the product information, and if the product quality is not qualified, to discharge the light gasoline from the intermediate material outlet of the stabilizer tower. The control unit is used to control the stabilizer tower to perform oil-gas separation after the light gasoline is discharged, so as to obtain qualified liquefied gas and stabilized gasoline.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the control method for oil-gas separation in the stabilizer tower as described in any one of claims 1-8.

11. A computer-readable storage medium storing a computer program thereon, characterized in that, When the computer program is executed by the processor, it implements the control method for oil-gas separation in the stabilizer tower as described in any one of claims 1-8.

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