Measurement point self-control method and device for preventing perforation of settler steam stripping section, terminal and medium

Abstract

The invention provides an anti-perforation measuring point automatic control method and device for a settler steam stripping section, a terminal and a medium, and the method comprises the steps: obtaining the damage information of a positive pressure chamber measuring point of the deposit amount of the settler steam stripping section, and selecting a negative pressure chamber of the deposit amount of a spent riser, which has a preset potential difference with the positive pressure chamber of the deposit amount of the settler steam stripping section, as a borrowing measuring point; setting a closed-loop self-control reservoir quantity given value for the reservoir quantity of the steam stripping section; the set value of the reservoir quantity is adjusted according to the preset potential difference, so that the display data of the positive pressure chamber measuring point of the reservoir quantity of the steam stripping section of the settler after the borrowing measuring point is adopted are correspondingly corrected according to the display data before the borrowing measuring point is adopted. The service life of the steam stripping section measuring point pressure guiding pipe can be greatly prolonged, once the measuring point pressure guiding pipe is broken, effective control over the steam stripping section reservoir volume can be maintained by means of the measuring point of the spent riser, then the purpose of preventing a lifting section from being perforated is achieved, and the intrinsic safety of the device is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of preventing perforation in the stripping section of a settler, and particularly to a method, device, terminal, and medium for automatic control of measurement points for preventing perforation in the stripping section of a settler. Background Art

[0002] Catalytic cracking is the core technology for crude oil processing in China. The stripper is an intermediate link between reaction and regeneration and is a key equipment in the catalytic cracking unit. The function of the stripping section is to remove volatile hydrocarbons from the spent catalyst, increase the yield of light oil, and reduce the coke production.

[0003] Perforation of the conical body in the stripping section of the catalytic cracking unit in many chemical plants has become normal. After analysis, it is known that the perforation is caused by the inability to effectively control the empty inventory in the stripping section after the inventory, and the reason for the inability to automatically control is that the pressure guiding pipe of the inventory measurement point in the stripping section is worn off. Considering the structure of the coaxial catalytic cracking reaction-regeneration system, the perforation of the stripping section means the mutual penetration of the two reactors, which directly endangers the essential safety and stable operation of the unit, and seriously may cause explosion accidents.

[0004] The existing control scheme for the inventory in the stripping section of the settler is as follows: cascade negative feedback control of the inventory in the second dense phase of the regenerator and the inventory in the stripping section, and a control scheme of low-selective protection for the difference pressure between the inventory in the stripping section and the spent plug valve. Since the inventory WC115 in the second dense phase of the regenerator and the differential pressure PC113 of the spent plug valve are in the full-scale state in actual production, the original designed control scheme cannot be effectively implemented. Summary of the Invention

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present application is to provide a method, device, terminal, and medium for automatic control of measurement points for preventing perforation in the stripping section of a settler, so as to solve the technical problem that it is difficult to prevent perforation in the current stripping section of the settler.

[0006] To achieve the above object and other related objects, the first aspect of the present application provides a method for automatic control of measurement points for preventing perforation in the stripping section of a settler, including: obtaining damage information of the positive pressure chamber measurement point of the inventory in the stripping section of the settler, and selecting the negative pressure chamber of the inventory in the spent riser with a preset position difference from the positive pressure chamber of the inventory in the stripping section of the settler as a borrowed measurement point; setting a given value of the inventory for closed-loop automatic control; the given value of the inventory is adjusted according to the preset position difference, so that the display data of the positive pressure chamber measurement point of the inventory in the stripping section of the settler after using the borrowed measurement point is corrected according to the display data before using the borrowed measurement point.

[0007] In some embodiments of the first aspect of the present application, the calculation method of the given value of the inventory set for the borrowed measurement point includes: given value of the inventory = increased value of the position difference + original normal control given value.

[0008] In some embodiments of the first aspect of the present application, the method further includes: after obtaining the damage information of the positive pressure chamber measurement point of the inventory in the stripper section of the settler, further performing: controlling the inventory in the stripper section based on the reverse follow-up relationship through the pressure drop of the spent catalyst slide valve.

[0009] In some embodiments of the first aspect of the present application, the method further includes: expanding the range of the pressure drop of the spent catalyst slide valve so that the pressure drop of the spent catalyst slide valve is in a non-full range state for PID automatic control.

[0010] In some embodiments of the first aspect of the present application, the process of controlling the inventory in the stripper section based on the reverse follow-up relationship through the pressure drop of the spent catalyst slide valve includes: changing the inventory in the stripper section from the automatic control state to the manual control state to lock the current; the pressure drop of the spent catalyst slide valve first decreases the current in the manual control state, and then increases the current for controlling the inventory in the stripper section to 100%; changing the pressure drop of the spent catalyst slide valve from the manual control state to the automatic control state, and after optimizing the set value, entering the PID automatic control program.

[0011] In some embodiments of the first aspect of the present application, the method for obtaining the damage information of the positive pressure chamber measurement point of the inventory in the stripper section of the settler includes any one of the following: obtaining by judging whether the deformation amount at the bottom of the stripper section exceeds the deformation threshold and / or by judging whether the bottom of the stripper section is cracked; obtaining by judging whether the impulse pipe is broken; obtaining by judging whether the pressure tapping port on the inner side of the impulse of the measurement points of the settler, the stripper section and the spent riser is blocked.

[0012] In some embodiments of the first aspect of the present application, the machine vision method is used to judge whether the deformation amount at the bottom of the stripper section exceeds the deformation threshold and whether the bottom of the stripper section is cracked.

[0013] To achieve the above object and other related objects, the second aspect of the present application provides a self-control device for the measurement point of preventing perforation of the stripper section of the settler, including: a borrowed measurement point module, used to obtain the damage information of the positive pressure chamber measurement point of the inventory in the stripper section of the settler, and select the negative pressure chamber of the inventory in the spent riser with a preset potential difference from the positive pressure chamber of the inventory in the stripper section of the settler as the borrowed measurement point; a measurement point self-control module, used to set a closed-loop self-control inventory set value for the inventory in the stripper section; the inventory set value is adjusted according to the preset potential difference so that the display data of the positive pressure chamber measurement point of the inventory in the stripper section of the settler after using the borrowed measurement point is corrected correspondingly according to the display data before using the borrowed measurement point.

[0014] To achieve the above object and other related objects, the third aspect of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the self-control method for the measurement point of preventing perforation of the stripper section of the settler is realized.

[0015] To achieve the above and other related objectives, a fourth aspect of the present application provides an electronic terminal, including: a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory so that the terminal executes the self-control method for measuring points of the stripping section of the settler to prevent perforation.

[0016] As described above, the self-control method, device, terminal, and medium for measuring points of the stripping section of the settler to prevent perforation in the present application have the following beneficial effects: The present invention can greatly improve the service life of the pressure guiding pipe of the measuring point in the stripping section. And once the pressure guiding pipe of the measuring point breaks, the effective control of the inventory in the stripping section can also be maintained by borrowing the measuring point of the spent riser, thereby achieving the purpose of preventing the perforation of the lifting section and ensuring the inherent safety of the device. Description of the Drawings

[0017] Figure 1 It shows a schematic diagram of the control scheme for the inventory in the stripping section of the settler in the prior art.

[0018] Figure 2 It shows a schematic flow diagram of the self-control method for measuring points of the stripping section of the settler to prevent perforation in an embodiment of the present application.

[0019] Figure 3 It shows a schematic diagram of the measuring points of the inventory in the stripping section of the settler in an embodiment of the present application.

[0020] Figure 4 It shows a schematic diagram of the wear-through mechanism of the stripping section of the settler in an embodiment of the present application.

[0021] Figure 5 It shows a schematic diagram of the structure of the electronic terminal in an embodiment of the present application.

[0022] Figure 6 It shows a schematic diagram of the structure of the device for self-control of measuring points of the stripping section of the settler to prevent perforation in an embodiment of the present application. Detailed Embodiments

[0023] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0024] It should be noted that in the following description, with reference to the accompanying drawings, several embodiments of the present application are described. It should be understood that other embodiments may also be used, and mechanical composition, structure, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is only defined by the claims of the published patent. The terms used herein are only for describing specific embodiments and are not intended to limit the present application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "beneath", "lower part", "above", "upper part", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0025] In the present application, unless otherwise clearly defined and limited, terms such as "install", "connect", "join", "fix", "hold" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] Furthermore, as used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, types, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or meaning any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C". An exception to this definition only occurs when the combination of elements, functions, or operations is inherently mutually exclusive in some way.

[0027] To solve the problems in the above background art, the present invention provides a self-control method, device, terminal, and medium for measuring points to prevent perforation in the stripping section of a settler. In order to make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, through the following embodiments and in combination with the accompanying drawings, a further detailed description of the technical solutions in the embodiments of the present invention is provided. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the invention.

[0028] Before further elaborating on the present invention, the nouns and terms involved in the embodiments of the present invention are described. The nouns and terms involved in the embodiments of the present invention are applicable to the following explanations:

[0029] (1) The inventory in the stripping section refers to the inventory of spent catalyst in the stripping section of the settler, which is one of the determining factors for the stripping time.

[0030] (2) The spent catalyst slide valve mainly functions to control the inventory in the settler by adjusting its opening degree.

[0031] (3) A settler is a device used for the sedimentation process. The process of making solid particles suspended in a liquid sink and separate is sedimentation.

[0032] The embodiments of the present invention provide a measuring point automatic control method for preventing perforation in the stripping section of a settler, a system for the measuring point automatic control method for preventing perforation in the stripping section of a settler, and a storage medium storing an executable program for implementing the measuring point automatic control method for preventing perforation in the stripping section of a settler. For the implementation of the measuring point automatic control method for preventing perforation in the stripping section of a settler, the embodiments of the present invention will illustrate an exemplary implementation scenario of the measuring point automatic control for preventing perforation in the stripping section of a settler.

[0033] As Figure 2 shown, a flow schematic diagram of a measuring point automatic control method for preventing perforation in the stripping section of a settler in an embodiment of the present invention is presented.

[0034] It can be understood that a settler is a device used for the sedimentation process. The process of making solid particles suspended in a liquid sink and separate is sedimentation. Sedimentation that utilizes the self-pressure of particles to obtain separation is called gravitational sedimentation, and sedimentation that utilizes the centrifugal force of particles to obtain separation is called centrifugal sedimentation. The purpose of sedimentation is to obtain a clarified liquid phase, recover valuable solid particle substances, or both.

[0035] In this embodiment, the measuring point automatic control method for preventing perforation in the stripping section of the settler mainly includes the following steps, which will be explained in detail below in combination with the drawings and text.

[0036] Step S11: Obtain the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler, and select the negative pressure chamber of the inventory in the spent catalyst riser with a preset potential difference from the positive pressure chamber of the inventory in the stripping section of the settler as the borrowed measuring point.

[0037] For ease of understanding, in combination with Figure 3The measuring points of the inventory in the stripping section of the settler are illustrated as follows: The length of the pressure guide pipe of the positive pressure chamber measuring point of the inventory WC104 in the stripping section of the settler from the bottom of the stripping section of the settler to the middle of the settler is more than 15 meters. In addition to multiple bends along the wall, it also needs to pass through multiple stripping section baffles and is fixed to the inner side wall of the stripping section by pipe clamps and baffle holes. The long-term harsh working conditions are likely to cause the inventory WC104 in the stripping section of the settler to malfunction due to the damage of the pressure guide pipe. The pressure guide pipes of the high and low pressure chambers of the main measuring points, namely the inventory WC104 in the stripping section, the inventory WD105 in the settler, the spent catalyst riser WD102, and the pressure drop PC113 of the spent catalyst plug valve, all cross the regenerator.

[0038] In this embodiment, one of the ways to obtain the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler is: by judging whether the deformation amount at the bottom of the stripping section exceeds the deformation threshold and / or by judging whether the bottom of the stripping section is cracked. Specifically, it is the damage caused by thermal expansion stress: Since the temperature of the settler is above 500 °C, the thermal and cold displacements at the bottom of the stripping section are about 300 mm. Therefore, under the combined action of the alternating stress of thermal expansion and the friction force of the fixing parts, the pressure guide pipe of the positive pressure chamber measuring point WC104 undergoes deformation, cracking, and even fracture.

[0039] For example, in some examples, the machine vision method can be used to judge whether the deformation amount at the bottom of the stripping section exceeds the deformation threshold and whether the bottom of the stripping section is cracked. For example, the image similarity comparison algorithm (such as the hash algorithm) can be used. Taking the image of the bottom of the stripping section in the uncracked state as the standard image, the real-time image of the bottom of the stripping section is compared with the standard image by the hash algorithm. If the comparison result shows that the difference between the two images exceeds a certain standard, it indicates that there is a risk of cracking or even cracking at the current bottom of the stripping section.

[0040] In this embodiment, one of the ways to obtain the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler is: by judging whether the pressure guide pipe is broken. Specifically, it is the damage caused by high-temperature catalyst: Under the working conditions of the high-temperature fluidized bed in the stripping section, the pressure guide pipe of the inventory WC104 measuring point is constantly subjected to the abrasion of the catalyst. The pressure guide pipe changes from thinning to wearing through and breaking, so this is also the reason why the measuring point shows fluctuations to complete malfunction.

[0041] In this embodiment, one of the ways to obtain the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler is: by judging whether the pressure guide port on the inner side of the pressure guide of the measuring points of the settler, the stripping section, and the spent catalyst riser is blocked. Specifically, it is the damage caused by coking and blocking of the pressure guide measuring point: The situation where the pressure guide ports on the inner side of the pressure guides of the measuring points of the settler, the stripping section, and the spent catalyst riser are blocked by coke occurs frequently, and the result is that the pressure guide measuring point malfunctions.

[0042] For example, in some examples, it is possible to determine whether the pressure tapping is blocked by monitoring the flow rate of the pressure tapping; if the flow rate of the pressure tapping is small, it indicates that the pressure tapping has a risk of being blocked or has already been blocked.

[0043] In addition, problems such as structural material construction are also likely to cause damage to the positive pressure chamber measuring points of the inventory in the stripping section of the settler. Specifically, material problems of the pressure guiding pipe, deviation of the stress direction of the pressure guiding pipe, unreasonable design structure of the pressure tapping, insufficient thermal expansion allowance, poor construction quality or out-of-control quality acceptance, etc. are also the reasons for the easy damage of the pressure guiding pipe of the measuring point.

[0044] The wear-through mechanism analysis of the stripping section of the settler is as follows:

[0045] When the inventory measuring point in the stripping section of the settler is damaged, the slide valve for spent catalyst fails, etc., resulting in the inability to control the inventory in the stripping section. In order to prevent bridging in the spent catalyst line, the valve position of the slide valve for spent catalyst is often remotely opened to ensure that the indication of the inventory WD105 in the settler is zero. The consequence is an empty inventory in the stripping section. After the stripping section has an empty inventory, due to the absence of the anti-accumulation layer and the free-slope flow layer above the cone of the stripping section, the area above the cone of the stripping section all becomes a fast-flow layer. Then, the spent catalyst directly causes direct high-speed erosion and wear on the cone of the stripping section, as shown by the arrows in Figure 4 as shown.

[0046] According to experience, if the empty inventory in the stripping section is maintained for about 45 to 60 days, there is a risk that the cone of the stripping section will be worn through in a small area. Then, the regenerated flue gas will reverse flow into the stripping section from the perforated part of the cone, and form a swirl between the wear-resistant layer of the stripping cone regenerator and the outer wall of the cone body, and then form multiple-point and large-area perforations on the outer wall of the stripping section cone from the outer wall of the stripping section cone. In addition, in the case of an empty inventory in the settler, after the pipeline at the loosening point of the cone of the stripping section breaks, the wear after the regenerated flue gas reverses flow into the stripping section from the loosening point causes large-area perforations.

[0047] It should be noted that the main risks after the perforation caused by the control of the empty inventory in the stripping section are as follows:

[0048] First, the mutual flow between the two reactors becomes a reality and the deterioration speed is extremely fast; the mutual flow between the two reactors is a very serious type of accident in the fluid catalytic cracking unit, which means that the oil and gas in the settler flow into the regenerator, or the flue gas in the regenerator directly enters the settler and contacts the high-temperature oil and gas, causing the oil and gas to burn and flash explosion to occur in the reactor, resulting in serious accidents.

[0049] Second, the risk brought by a large amount of non-condensable gas: after the settler is perforated, due to a large amount of flue gas flowing into the settler, entering the separation system will cause drawbacks such as flooding of the fractionating tower, flooding of the absorption tower and reabsorption tower, and unqualified product quality.

[0050] III. Risk of excessive nitrogen carried by dry gas: After the perforation of the settler, the flow rate of the unit's dry gas FD309 out of the unit increases from about 3 t / h to more than 13 t / h, and the nitrogen content increases from below 15% v to above 40% v. At this time, the dry gas not only has a low calorific value for combustion but also poses a risk of furnace shutdown for downstream combustion furnace users.

[0051] IV. Risk of decreased power generation condition of the expander: After the perforation of the settler, due to a large amount of flue gas flowing into the settler, the flue gas entering the expander decreases significantly, causing the main blower set to enter the power consumption condition or zero condition, greatly reducing the anti-trip ability of the unit.

[0052] V. Risk of large fluctuations in the differential pressure between the two reactors: After the perforation of the settler, when the flue gas flowing into the stripping section hinders the fluidization of the spent catalyst, the differential pressure between the two reactors fluctuates greatly, posing a risk of bridging in the spent catalyst line and the regeneration line, and at the same time, there is also a risk of triggering the high and low temperature self-protection interlock of the riser outlet temperature.

[0053] Step S12: Set a closed-loop automatic control inventory set value for the inventory of the stripping section; the inventory set value is adjusted according to the preset differential pressure so that the display data of the positive pressure chamber measuring point of the inventory of the stripping section of the settler is corrected according to the display data before using the borrowed measuring point after using the borrowed measuring point.

[0054] In this embodiment, the calculation method of the inventory set value set for the borrowed measuring point is as follows:

[0055] Inventory set value = differential pressure increase value + original normal control set value; (Formula 1)

[0056] Since the differential pressure between the negative pressure chamber pressure tapping point of the spent catalyst standpipe inventory WD102 and the positive pressure chamber pressure tapping point of the stripping section inventory WC104 is about 10 meters, after using the negative pressure chamber pressure tapping point of the spent catalyst standpipe inventory WD102 as the borrowed measuring point, when the actual production of the stripping section inventory WC104 remains unchanged, its measured value will also increase significantly, which has a great interference on the reading operation.

[0057] Therefore, in the embodiment of the present invention, according to the operation data of the stripping section inventory WC104 in good condition, when the indication is 15 tons, the inventory of the settler WD105 shows the inventory. So, in the case of using the borrowed measuring point, by increasing the inventory of the stripping section, it is verified that when the stripping section inventory WC104 is 25 tons, the settler inventory WD105 shows the inventory. Furthermore, it is deduced that the increased inventory due to the increased differential pressure is 10 tons, and at the same time, it is also verified that the differential pressure gauge range of the stripping section inventory WC104 (30 tons) can meet the automatic control requirements without expanding the range. At the same time, the set value of the automatic control in the stage of using the borrowed measuring point is also determined (see Formula 1 in the above text). In this way, both the risk of WC104 and the risk of bridging in the spent catalyst line are eliminated. In this embodiment, the set value for the borrowed measuring point is as follows:

[0058] Given value = increased differential pressure value + original normal control given value = 10 + 7 = 17.

[0059] It should be noted that: the inventory WD105 in the settler is the inventory above the stripping section. The meaning of "seeing the inventory" is that sometimes the inventory can be seen, and sometimes it cannot, similar to a pulsed appearance of the inventory. During normal production, the indication of the inventory WD105 in the settler is 0. However, if the indication of the inventory WD105 in the settler is too high, there will be a risk of bridging in the spent catalyst line (i.e., not fluidized, not flowing), and there will also be a risk of causing an empty inventory in the regenerator. When the measuring point of the inventory WC104 in the stripping section is normal, the inventory WD105 in the settler can see the inventory (indication > 0 tons). After borrowing the measuring point, through experiments, it is known that when the indication of the inventory WC104 in the stripping section is 25 tons, the inventory WD105 in the settler can see the inventory (> 0 tons), seemingly with an apparent increase of 10 tons. More specifically:

[0060] Before borrowing the measuring point:

[0061] After borrowing the measuring point: The displayed value of the inventory of WC104 seems to be deceptively high, ΔP 2 Because the distance between the positive and negative pressure pipes has become longer, increasing by about 10 m, so seemingly ΔP 2 rises significantly. With S 2 and g remaining unchanged, the measured value of WC104 also rises.

[0062] Among them, ρ 2 represents the density of the stripping section, g represents gravity, h 2 represents the height of the stripping section, S 2 represents the area of the stripping section, and ΔP 2 represents the pressure drop of the stripping section.

[0063] It is worth noting that: in the embodiments of the present invention, the set value of the borrowed measuring point is precisely corrected, and the correction value is set according to the preset differential pressure between the positive pressure chamber of the inventory in the stripping section and the negative pressure chamber of the inventory in the spent catalyst riser. The advantage of this is that the displayed data of the positive pressure chamber measuring point of the inventory measurement in the stripping section can be kept consistent before and after borrowing the measuring point, that is, the displayed data of the inventory measurement in the stripping section will not increase abnormally due to the adoption of the borrowed measuring point.

[0064] In some examples of this embodiment, the method further includes: after obtaining the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler, it also performs: controlling the inventory in the stripping section based on the reverse follow-up relationship through the pressure drop of the spent catalyst slide valve.

[0065] Specifically, by analyzing the logical relationship between the stripping section storage WC104 and the standpipe storage WD102, the settler storage WD105 and the plug valve pressure drop PC113, the following Table 1 can be obtained, which shows the logical relationship between the above four parameters in the bridging state of the line to be produced.

[0066] Table 1: Relationship between the four parameters in the bridge state of the waiting line

[0067] WC104↑ WD105↑ PC113↓ WD102↓

[0068] Furthermore, in the technical solution of indirectly controlling the stripping section storage volume WC104 through the pressure drop of the waiting plug valve PC113, when the storage volume measurement point of the settler stripping section is damaged, the stripping section storage volume is indirectly controlled through the pressure drop of the waiting plug valve PC113 to prevent the stripping section cone from being worn out due to empty storage volume. 2 O, and in the automatic control stage when the WC104 measuring point of the stripping section is intact, the value of the pressure drop of the plug valve to be produced PC113 is basically at full scale. Therefore, even if the automatic control logic relationship meets the conditions, it still does not meet the conditions for automatic control. Therefore, it is necessary to modify the range of the pressure drop of the plug valve to be produced PC113. Specifically, the range of the pressure drop of the plug valve to be produced PC113 can be changed to 0~15000mmH in the DCS system. 2 O, and then synchronize the expansion range update of the plug valve pressure drop differential pressure transmitter to be produced.

[0069] In some examples, the process of indirectly controlling the stripping section storage volume WC104 through the plug valve pressure drop PC113 includes: changing the stripping section storage volume WC104 from the automatic control state to the manual control state to lock the current; the plug valve pressure drop PC113 first reduces the current under the manual control state, and then controls the current of the stripping section storage volume WC104 to 100%; changing the plug valve pressure drop PC113 from the manual control state to the automatic control state, and entering the PID automatic control program after optimizing the set value.

[0070] It should be understood that P in PID automatic control refers to Proportion, I refers to Integral, and D refers to Differential. Proportion P is the magnification of the difference between the preset value and the feedback value; Integral I is the accumulation of the difference between the preset value and the feedback value over time; Differential D is the difference between the two differences, that is, a corresponding adjustment action is given in advance according to the rate of change of the difference. It should be noted that the P value and I value set in the above embodiment are only for example and not for limitation.

[0071] For example, when the spent catalyst slide valve pressure drop PC113 indirectly controls the inventory WC104 in the stripping section to be 4.5T automatically, after optimizing the setting parameters of the spent catalyst slide valve pressure drop PC113 regulator to P = 650 and I = 2, it not only protects the spent catalyst slide valve but also meets the purpose of stable control of the spent catalyst slide valve pressure drop PC113. Only when the spent catalyst slide valve pressure drop PC113 is stable can the inventory WC104 in the stripping section be stably controlled.

[0072] The inventory WC104 in the stripping section is indirectly controlled by the spent catalyst slide valve pressure drop PC113. Both the spent catalyst slide valve pressure drop PC113 and WC104 can show the inventory in the stripping section of the settler in the form of numerical values. PC113 can show the change of the inventory in the settler in a larger range. Even if the stripping section of the settler is worn through and the indication of WC104 is inaccurate, the inventory in the stripping section of the settler can still be well controlled to ensure that the wear-through of the stripping section of the settler does not deteriorate. Specifically in this embodiment, the optimal control range of PC113 is about 9000 (0.01KPA), that is, WC104 shows about 4.5T.

[0073] The measuring point automatic control method for preventing perforation of the stripping section of the settler provided by the embodiment of the present invention can be implemented on the terminal side or the server side. Regarding the hardware structure of the measuring point automatic control terminal for preventing perforation of the stripping section of the settler, please refer to Figure 5 , which is an optional hardware structure schematic diagram of the measuring point automatic control terminal 500 for preventing perforation of the stripping section of the settler provided by the embodiment of the present invention. The terminal 500 can be a mobile phone, a computer device, a tablet device, a personal digital processing device, a factory background processing device, etc. The measuring point automatic control terminal 500 for preventing perforation of the stripping section of the settler includes: at least one processor 501, a memory 502, at least one network interface 504, and a user interface 506. Each component in the device is coupled together through a bus system 505. It can be understood that the bus system 505 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 505 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, in Figure 3 all kinds of buses are labeled as the bus system.

[0074] Among them, the user interface 506 can include a display, a keyboard, a mouse, a trackball, a click gun, a button, a button, a touchpad, or a touch screen, etc.

[0075] It can be understood that the memory 502 can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM). The memory described in the embodiments of the present invention is intended to include but not limited to these and any other suitable categories of memories.

[0076] The memory 502 in the embodiments of the present invention is used to store various categories of data to support the operation of the measuring point automatic control terminal 500 for preventing perforation in the stripper section of the settler. Examples of these data include: any executable programs for operating on the measuring point automatic control terminal 500 for preventing perforation in the stripper section of the settler, such as the operating system 5021 and the application program 5022; the operating system 5021 contains various system programs, such as the framework layer, the core library layer, the driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 5022 can contain various application programs, such as a media player, a browser, etc., for implementing various application services. The measuring point automatic control method for preventing perforation in the stripper section of the settler provided by the embodiments of the present invention can be included in the application program 5022.

[0077] The method disclosed in the embodiments of the present invention described above can be applied to or implemented by the processor 501. The processor 501 may be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above method can be completed by the integrated logic circuit in hardware or instructions in software form in the processor 501. The above-mentioned processor 501 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 501 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor 501 may be a microprocessor or any conventional processor, etc. Combining the steps of the accessory optimization method provided in the embodiments of the present invention can be directly embodied as being completed by the execution of the hardware decoding processor, or by the combination of the hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the memory. The processor reads the information in the memory and combines its hardware to complete the steps of the foregoing method.

[0078] In an exemplary embodiment, the measurement point automatic control terminal 500 for preventing perforation in the stripping section of the settler can be an application-specific integrated circuit (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), complex programmable logic device (CPLD, Complex Programmable Logic Device) for executing the foregoing method.

[0079] As Figure 6 shown, a schematic structural diagram of a measurement point automatic control device for preventing perforation in the stripping section of a settler in an embodiment of the present invention is presented. In this embodiment, the measurement point automatic control device 600 for preventing perforation in the stripping section of the settler includes a borrowed measurement point module 601 and a measurement point automatic control module 602.

[0080] The borrowed measurement point module 601 is used to obtain the damage information of the positive pressure chamber measurement point of the inventory in the stripping section of the settler, and select the negative pressure chamber of the spent riser inventory with a preset potential difference from the positive pressure chamber of the inventory in the stripping section of the settler as the borrowed measurement point.

[0081] The measurement point automatic control module 602 is used to set a given value of the inventory for closed-loop automatic control of the inventory in the stripping section; the given value of the inventory is adjusted according to the preset potential difference so that the display data of the positive pressure chamber measurement point of the inventory in the stripping section of the settler is corrected accordingly according to the display data before using the borrowed measurement point after using the borrowed measurement point.

[0082] In some examples, the calculation method of the inventory set value borrowed by the measurement point automatic control module 602 for the measurement point includes: inventory set value = increased differential pressure value + original normal control set value.

[0083] In some examples, the measurement point automatic control module 602 is further configured to, after obtaining the damage information of the positive pressure chamber measurement point of the inventory in the stripping section of the settler, further execute: controlling the inventory in the stripping section based on the reverse follow-up relationship through the pressure drop of the spent catalyst slide valve.

[0084] Furthermore, the measurement point automatic control module 602 expands the range of the pressure drop of the spent catalyst slide valve so that the pressure drop of the spent catalyst slide valve is in a state where the range is not full, for PID automatic control.

[0085] Furthermore, the process of the measurement point automatic control module 602 controlling the inventory in the stripping section based on the reverse follow-up relationship through the pressure drop of the spent catalyst slide valve includes: changing the inventory in the stripping section from the automatic control state to the manual control state to lock the current; the pressure drop of the spent catalyst slide valve first decreases the current in the manual control state, and then increases the current of the inventory in the stripping section to 100%; changing the pressure drop of the spent catalyst slide valve from the manual control state to the automatic control state, and entering the PID automatic control program after optimizing the set value.

[0086] In some examples, the method for the borrowed measurement point module 601 to obtain the damage information of the positive pressure chamber measurement point of the inventory in the stripping section of the settler includes any one of the following: obtaining by judging whether the deformation amount at the bottom of the stripping section exceeds the deformation threshold and / or by judging whether the bottom of the stripping section is cracked; obtaining by judging whether the pressure guiding pipe is broken; obtaining by judging whether the pressure guiding ports on the inner side of the pressure guiding of the measurement points of the settler, the stripping section and the spent riser are blocked.

[0087] Furthermore, the borrowed measurement point module 601 judges whether the deformation amount at the bottom of the stripping section exceeds the deformation threshold and whether the bottom of the stripping section is cracked by means of machine vision.

[0088] It should be noted that: when the measurement point automatic control device for preventing perforation of the stripping section of the settler provided in the above embodiment performs the measurement point automatic control for preventing perforation of the stripping section of the settler, only the above division of each program module is used for illustration. In practical applications, the above processing can be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-described processing. In addition, the measurement point automatic control device for preventing perforation of the stripping section of the settler provided in the above embodiment and the embodiment of the measurement point automatic control method for preventing perforation of the stripping section of the settler belong to the same concept. For the specific implementation process, please refer to the method embodiment, which will not be elaborated here.

[0089] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to a computer program. The aforementioned computer program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including those of the above method embodiments; and the aforementioned storage medium includes: various media such as ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0090] In the embodiments provided in the present application, the computer-readable and writable storage medium may include read-only memory, random access memory, EEPROM, CD-ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, flash memory, USB flash drives, mobile hard disks, or any other medium that can be used to store the desired program code in the form of instructions or data structures and can be accessed by a computer. Additionally, any connection can be appropriately referred to as a computer-readable medium. For example, if the instructions are sent from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of the medium. However, it should be understood that computer-readable and writable storage media and data storage media do not include connections, carrier waves, signals, or other transient media, but are intended to refer to non-transient, tangible storage media. As used in the application, magnetic disks and optical discs include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where magnetic disks typically replicate data magnetically, while optical discs optically replicate data using lasers.

[0091] In summary, the present application provides a method, device, terminal, and medium for automatic control of measuring points for preventing perforation of the stripping section of a settler. The present invention can greatly improve the service life of the pressure guiding pipe of the measuring point in the stripping section, and even if the pressure guiding pipe of the measuring point breaks, the effective control of the inventory in the stripping section can be maintained by borrowing the measuring point of the spent catalyst riser, thereby achieving the purpose of preventing perforation of the lifting section and ensuring the inherent safety of the device. Therefore, the present application effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0092] The above embodiments merely illustrate the principles and effects of the present application and are not used to limit the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application should still be covered by the claims of the present application.

Claims

1. A measuring point automatic control method for preventing perforation in the stripping section of a settler, characterized in that, it includes: Obtain the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler, and select the negative pressure chamber of the spent riser inventory with a preset potential difference from the positive pressure chamber of the inventory in the stripping section of the settler as the borrowed measuring point; Set a given value of the inventory for closed-loop automatic control of the stripping section; the given value of the inventory is adjusted according to the preset potential difference, so that the display data of the positive pressure chamber measuring point of the inventory in the stripping section of the settler is corrected accordingly according to the display data before using the borrowed measuring point.

2. The measuring point automatic control method for preventing perforation in the stripping section of the settler according to claim 1, characterized in that, The calculation method of the given value of the inventory set for the borrowed measuring point includes: Given value of inventory = Increased value of potential difference + Original normal control given value.

3. The measuring point automatic control method for preventing perforation in the stripping section of the settler according to claim 1, characterized in that, The method further includes: After obtaining the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler, it also executes: Controlling the inventory in the stripping section based on the reverse follow-up relationship through the pressure drop of the spent plug valve.

4. The measuring point automatic control method for preventing perforation in the stripping section of the settler according to claim 3, characterized in that, The method further includes: Expanding the range of the pressure drop of the spent plug valve so that the pressure drop of the spent plug valve is in a non-full range state for PID automatic control.

5. The measuring point automatic control method for preventing perforation in the stripping section of the settler according to claim 3, characterized in that, The process of controlling the inventory in the stripping section based on the reverse follow-up relationship through the pressure drop of the spent plug valve includes: Changing the inventory in the stripping section from the automatic control state to the manual control state to lock the current; The pressure drop of the spent plug valve first decreases the current in the manual control state, and then controls the current of the inventory in the stripping section to increase to 100%; Changing the pressure drop of the spent plug valve from the manual control state to the automatic control state, and entering the PID automatic control program after optimizing the set value.

6. The measuring point automatic control method for preventing perforation in the stripping section of the settler according to claim 1, characterized in that, The methods for obtaining the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler include any one of the following: Obtained by judging whether the deformation amount at the bottom of the stripping section exceeds the deformation threshold and / or by judging whether the bottom of the stripping section is cracked; Obtained by judging whether the pressure guiding pipe is broken; Obtained by judging whether the pressure guiding ports on the inner side of the pressure guiding of the measuring points of the settler, the stripping section and the spent riser are blocked.

7. The measuring point automatic control method for preventing perforation in the stripping section of the settler according to claim 6, characterized in that, Judging whether the deformation amount at the bottom of the stripping section exceeds the deformation threshold and whether the bottom of the stripping section is cracked by means of machine vision.

8. A measuring point automatic control device for preventing perforation in the stripping section of a settler, characterized in that, it includes: A borrowed measuring point module, used to obtain the damage information of the positive pressure chamber measuring point of the inventory in the stripping section of the settler, and select the negative pressure chamber of the spent riser inventory with a preset potential difference from the positive pressure chamber of the inventory in the stripping section of the settler as the borrowed measuring point; The measurement point automatic control module is used to set a closed-loop automatic control inventory given value for the inventory of the stripping section; the inventory given value is adjusted according to the preset differential level, so that the display data of the positive pressure chamber measurement point of the inventory of the stripping section of the settler is corrected correspondingly according to the display data before using the borrowed measurement point after using the borrowed measurement point.

9. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, it implements the measurement point automatic control method for preventing perforation of the stripping section of the settler according to any one of claims 1 to 7.

10. An electronic terminal, characterized in that, it includes: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory, so that the terminal executes the measurement point automatic control method for preventing perforation of the stripping section of the settler according to any one of claims 1 to 7.

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