Material level detection method, device and equipment for material distribution section of adsorption tower

Abstract

The invention provides a material level detection method, device and equipment for a material distribution section of an adsorption tower. The method comprises the following steps: acquiring the maximum weight of activated carbon stored when a material distribution section is in a full material state and the unloading amount of an unloader during each action; when the material distribution section is in a full material state, the action times of the unloader are reset, and when the action of the unloader is detected, the action times of the unloader are accumulated; and calculating the material level of the material distribution section of the adsorption tower based on the maximum active carbon weight, the unloading amount of the unloader during each action and the action times of the unloader. By means of the arrangement, the material level of the material distribution section of the adsorption tower can be simulated through existing equipment under the condition that a material level indicator is not additionally arranged, the material level height of material distribution can be simulated in real time, and an operator can conveniently supplement materials in time according to the material level condition of the material distribution section.

Description

Technical Field

[0001] The present application relates to a material level detection method, device and equipment for a material distribution section of an adsorption tower, and belongs to the field of automatic control technology. Background Art

[0002] In the activated carbon desulfurization and denitrification system, the activated carbon is recycled. The activated carbon absorbs SO2 and NO in the flue gas during the top-down flow in the activated carbon desulfurization and denitrification adsorption tower module (abbreviated as: adsorption tower). X The activated carbon is then discharged from the bottom of the adsorption tower module and transported to the analysis tower module by equipment such as chain bucket activated carbon conveyor for thermal analysis. The analyzed activated carbon is cooled and then transported to the adsorption tower module for recycling. Therefore, the material circulation control of activated carbon is crucial in this system.

[0003] The material level height of the distribution section of the adsorption tower directly affects the operating personnel's refilling operation on this module; the material level of the distribution section also affects the working condition of the adsorption tower module. If the material level of the distribution section of the adsorption tower is low or even there is no material, the flue gas in the adsorption tower module will be connected to the upper distributor and stuffing tank in large quantities. If the lack of material is not discovered for a long time, it will cause serious material shortage inside the module and even cause the chimney environmental protection data to exceed the standard.

[0004] However, the adsorption tower modules are usually arranged in a stacked upper and lower module, with the upper module close to the lower module, and due to the internal structural characteristics of the adsorption tower, a continuous material level meter cannot be installed in the distribution section of the adsorption tower, so the material level of the distribution section cannot be grasped in real time.

[0005] In response to the above problems, the current solution is to install a material level switch on the distributor at the top of the fabric section. When this material level switch has a signal, it means that the material level of the fabric section is full; however, when this material level switch has no signal, the material level of the fabric section cannot be determined. Summary of the invention

[0006] The present application provides a material level detection method, device and equipment for a material distribution section of an adsorption tower to solve the problem that the material level of the material distribution section cannot be grasped in real time.

[0007] In a first aspect, an embodiment of the present application provides a material level detection method for a material distribution section of an adsorption tower, comprising: Obtain the maximum weight of activated carbon stored when the material distribution section is in a full material state and the discharge amount of the discharger each time it operates; When the material distribution section is in a full material state, the action times of the unloader are reset to zero, and when the action of the unloader is detected, the action times of the unloader are accumulated; The material level of the material distribution section of the adsorption tower is calculated based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated, and the number of actuations of the discharger.

[0008] Based on the above method, optionally, the material level of the adsorption tower cloth section is calculated based on the maximum activated carbon weight, the discharge amount of the discharger at each action, and the number of actions of the discharger, including: The material level of the adsorption tower distribution section is calculated based on the following formula:

[0009] In the formula, Indicates the material level of the adsorption tower cloth section. Indicates the discharge amount of the discharger each time it moves. Indicates the number of times the unloader operates. Indicates the maximum activated carbon weight.

[0010] Based on the above method, optionally, when the material distribution section is in a full material state, the number of actions of the discharger is reset to zero, including: Detect whether the material level switch in the distributor arranged at the top of the material distribution section outputs a signal; When the signal output by the material level switch is obtained, it is determined that the material distribution section is in a full material state, and the number of actions of the discharger is reset to zero.

[0011] Based on the above method, optionally, it also includes: When the material level in the cloth section of the adsorption tower is lower than the set value, an alarm signal is issued.

[0012] Based on the above method, optionally, obtaining the maximum weight of activated carbon stored when the material distribution section is in a full material state includes: The volume of the distribution section is obtained, and based on the volume of the distribution section and the density of the activated carbon, the maximum weight of activated carbon stored when the distribution section is in a full state is calculated.

[0013] In a second aspect, the present application also provides a material level detection device for a material distribution section of an adsorption tower, which includes: An acquisition module is used to acquire the maximum weight of activated carbon stored when the material distribution section is in a full material state and the discharge amount of the discharger each time it operates; The detection module is used to reset the action times of the discharger when the material distribution section is in a full material state, and accumulate the action times of the discharger when the action of the discharger is detected; The calculation module is used to calculate the material level of the adsorption tower cloth section based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated, and the number of actuations of the discharger.

[0014] In a third aspect, an embodiment of the present application further provides a control device, which includes a memory and a processor, wherein the memory stores a computer program, and when the processor calls and executes the computer program, the material level detection method of the adsorption tower cloth section as described in any one of the first aspects is implemented. In the material level detection method, device and equipment of the adsorption tower distribution section provided by the present application, the maximum activated carbon weight stored when the distribution section is in a full state and the discharge amount of the discharger each time the discharger is actuated are obtained; when the distribution section is in a full state, the number of discharger actions is reset to zero, and when the discharger action is detected, the number of discharger actions is accumulated; based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated and the number of discharger actions, the material level of the adsorption tower distribution section is calculated. With such a setting, the material level of the adsorption tower distribution section can be simulated using existing equipment without the condition of adding a material level meter, and the material level height of the distribution can be simulated in real time, so that the operator can replenish the material in time according to the material level of the distribution section. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. In addition, these drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments.

[0016] Figure 1 It is the structural schematic diagram of the adsorption tower; Figure 2 A schematic flow chart of a material level detection method for a material distribution section of an adsorption tower provided in one embodiment of the present application; Figure 3 A logic diagram of a material level simulation detection function provided by one embodiment of the present application; Figure 4 A schematic diagram of the structure of a material level detection device for a material distribution section of an adsorption tower provided in one embodiment of the present application; Figure 5 A schematic diagram of the structure of a control device provided for one embodiment of the present application. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0018] Reference Figure 1 , Figure 1It is a structural diagram of the adsorption tower. Among them, S1 is the upper module distribution section, X1 is the lower module distribution section, S2 is the upper module desulfurization and denitrification section, X2 is the lower module desulfurization and denitrification section, S3 is the upper module unloading section, X3 is the lower module unloading section, S4 is the upper module distributor, X4 is the lower module distributor, S5 is the upper module unloader, X5 is the lower module unloader, S6 is the upper module distributor level switch, and X6 is the lower module distributor level switch.

[0019] In the existing solution, a material level switch is installed on the distributor at the top of the cloth section to detect the material level. When the material level switch has a signal, it means that the material level of the cloth section is full; however, when the material level switch has no signal, the material level of the cloth section cannot be determined.

[0020] In order to solve the above problems, the present application uses existing equipment to simulate and detect the material level of the adsorption tower distribution section without adding a material level meter. The main purpose is to achieve the effect of real-time simulation of the material level of the distribution section by writing a program, so that the material level of the adsorption tower distribution section can be grasped in time.

[0021] Reference Figure 2 , Figure 2 A schematic flow chart of a method for detecting the material level of a material distribution section of an adsorption tower provided in one embodiment of the present application. The method of this embodiment can be executed by a control device of the adsorption tower, which can be a DCS device or a PLC device. Based on this, Figure 2 As shown, the method comprises at least the following steps: Step S101: Obtain the maximum weight of activated carbon stored when the material distribution section is in a full material state and the discharge amount of the discharger each time it is actuated.

[0022] Specifically, the method for obtaining the maximum weight of activated carbon stored when the distribution section is in a full state may include: obtaining the volume of the distribution section, and calculating the maximum weight of activated carbon stored when the distribution section is in a full state based on the volume of the distribution section and the density of the activated carbon.

[0023] The discharge amount of the discharger each time it moves can be obtained by measurement.

[0024] Step S102: when the material distribution section is in a full material state, the number of times the discharger operates is reset to zero, and when the operation of the discharger is detected, the number of times the discharger operates is accumulated.

[0025] In practice, a material level switch may be provided in the distributor at the top of the material distribution section, and through the material level switch, it may be detected whether the material distribution section is in a full material state.

[0026] Accordingly, step S102 may include: detecting whether a material level switch in a distributor disposed at the top of the material distribution section outputs a signal; when a signal output by the material level switch is obtained, determining that the material distribution section is in a full material state, and clearing the number of actions of the discharger.

[0027] Step S103: Based on the maximum activated carbon weight, the discharge amount of the discharger each time and the number of times the discharger operates, the material level of the distribution section of the adsorption tower is calculated.

[0028] Specifically, the material level of the adsorption tower cloth section can be calculated through the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated, and the number of actuations of the discharger.

[0029] In some embodiments, based on the maximum activated carbon weight, the discharge amount of the discharger at each action, and the number of actions of the discharger, the calculation formula for calculating the material level of the adsorption tower cloth section is:

[0030] In the formula, Indicates the material level of the adsorption tower cloth section. Indicates the discharge amount of the discharger each time it moves. Indicates the number of times the unloader operates. Indicates the maximum activated carbon weight.

[0031] Specifically, in practice, each module of the adsorption tower is fed in turn, and each module is fed until the material level switch on the distributor at the top of the material distribution section has a signal, and then the next adsorption tower module is fed. At this time, the action times of the unloader of this module are reset N ,Will N =0 Substitute into formula (1) to get the current material level L =100, at this time the material section is full. As the unloader continues to move, the number of actions N Continuously increasing, current material level L The value of decreases continuously, reflecting that the material level in the fabric section gradually decreases.

[0032] In some embodiments, the above method may further include: When the material level of the adsorption tower distribution section is lower than the set value, an alarm signal is issued. After receiving the alarm signal, the staff can feed the corresponding distribution section as soon as possible to ensure the normal operation of the system and avoid malfunctions or abnormalities.

[0033] Based on the above scheme, the maximum activated carbon weight stored when the distribution section is in a full state and the discharge amount of the discharger each time the discharger is actuated are obtained; when the distribution section is in a full state, the number of discharger actuations is reset to zero, and when the discharger actuation is detected, the number of discharger actuations is accumulated; based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated, and the number of discharger actuations is accumulated; the material level of the distribution section of the adsorption tower is calculated based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated, and the number of discharger actuations. With such a setting, the material level of the distribution section of the adsorption tower can be simulated using existing equipment without the need to add a level meter, and the material level height of the distribution can be simulated in real time, so that the operator can replenish the material in a timely manner according to the material level of the distribution section.

[0034] Reference Figure 3 , Figure 3 A logic diagram of a material level simulation detection function provided in one embodiment of the present application. Figure 3 101 is the first assignment instruction, 102 is the first addition instruction, 103 is the first multiplication instruction, 104 is the first division instruction, 105 is the first subtraction instruction, and 106 is the second multiplication instruction.

[0035] The specific execution logic is: when the material level switch signal is 1, the value 0 is written into the discharger action count variable N through the first assignment instruction 101; when the discharger action completion signal is 1, the first addition instruction 102 is used to add the discharger action times N and the value 1 and write into the discharger action count variable N; then, through the first multiplication instruction 103, the discharge amount T of each discharger action and the discharger action times N are multiplied and written into the temporary intermediate variable TEMP1; then, through the first division instruction 104, the temporary intermediate variable TEMP1 and the activated carbon weight Tf stored when the material distribution section is full are divided and written into the temporary intermediate variable TEMP2; then, through the first subtraction instruction 105, 1 and the temporary intermediate variable TEMP2 are subtracted and written into the temporary intermediate variable TEMP3; finally, through the second multiplication instruction 106, the temporary intermediate variable TEMP3 and the value 100 are multiplied and written into the current material level L.

[0036] In addition, the present application embodiment provides a material level detection device for the material distribution section of the adsorption tower, referring to Figure 4 , the device comprises: An acquisition module 41 is used to acquire the maximum weight of activated carbon stored when the material distribution section is in a full material state and the discharge amount of the discharger each time it is actuated; The detection module 42 is used to reset the number of times the discharger has been operated to zero when the material distribution section is in a full material state, and to accumulate the number of times the discharger has been operated when the discharger has been detected to be in operation; The calculation module 43 is used to calculate the material level of the adsorption tower distribution section based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated, and the number of actuations of the discharger.

[0037] Among them, regarding the specific implementation methods of each module of the material level detection device of the above-mentioned adsorption tower cloth section, reference can be made to the corresponding contents in the aforementioned method embodiment, which will not be repeated here.

[0038] In addition, the present application embodiment provides a control device, such as Figure 5 As shown, the control device includes a memory 51 and a processor 52; wherein the memory 51 stores a computer program, and when the processor 52 calls and executes the computer program, the material level detection method of the adsorption tower cloth section in any of the above embodiments is implemented.

[0039] The control device may be an independent control device, or may be a control device of a system to which the adsorption tower belongs or a component thereof.

[0040] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0041] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0042] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0043] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0044] A person skilled in the art may understand that all or part of the steps of the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0045] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium. The above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A material level detection method for a material distribution section of an adsorption tower, characterized in that: include: Obtain the maximum weight of activated carbon stored when the material distribution section is in a full material state and the discharge amount of the discharger each time it operates; When the material distribution section is in a full material state, the action times of the unloader are reset to zero, and when the action of the unloader is detected, the action times of the unloader are accumulated; The material level of the material distribution section of the adsorption tower is calculated based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated, and the number of actuations of the discharger.

2. The method according to claim 1, characterized in that: The material level of the adsorption tower cloth section is calculated based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is operated, and the number of operations of the discharger, including: The material level of the adsorption tower distribution section is calculated based on the following formula: In the formula, Indicates the material level of the adsorption tower cloth section. Indicates the discharge amount of the discharger each time it moves. Indicates the number of times the unloader operates. Indicates the maximum activated carbon weight.

3. The method according to claim 1, characterized in that: When the material distribution section is in a full material state, the number of actions of the discharger is reset to zero, including: Detect whether the material level switch in the distributor arranged at the top of the material distribution section outputs a signal; When the signal output by the material level switch is obtained, it is determined that the material distribution section is in a full material state, and the number of actions of the discharger is reset to zero.

4. The method according to claim 1, characterized in that: Also includes: When the material level in the cloth section of the adsorption tower is lower than the set value, an alarm signal is issued.

5. The method according to claim 1, characterized in that The step of obtaining the maximum weight of activated carbon stored when the material distribution section is in a full material state comprises: The volume of the distribution section is obtained, and based on the volume of the distribution section and the density of the activated carbon, the maximum weight of activated carbon stored when the distribution section is in a full state is calculated.

6. A material level detection device for a material distribution section of an adsorption tower, characterized in that: include: An acquisition module is used to acquire the maximum weight of activated carbon stored when the material distribution section is in a full material state and the discharge amount of the discharger each time it operates; The detection module is used to reset the action times of the discharger when the material distribution section is in a full material state, and accumulate the action times of the discharger when the action of the discharger is detected; The calculation module is used to calculate the material level of the adsorption tower cloth section based on the maximum activated carbon weight, the discharge amount of the discharger each time the discharger is actuated, and the number of actuations of the discharger.

7. A control device, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and when the processor calls and executes the computer program, the material level detection method for the cloth section of the adsorption tower as described in any one of claims 1 to 5 is implemented.

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