Automatic control method and device for multi-pulverized-coal-line conveying of dry powder coal gasifier

Abstract

The invention provides an automatic control method and device for multi-pulverized coal line conveying of a dry powder coal gasifier. The automatic control method comprises the following steps: receiving various constraint conditions input on a DCS (Distributed Control System) operation interface; collecting operation data of each coal preparation line and operation data of each gasification furnace; according to various constraint conditions, the operation data of each coal preparation line and the operation data of each gasification furnace, determining to start a single coal preparation line or two or more coal preparation lines to convey pulverized coal; if the single coal preparation line is started to convey the pulverized coal, executing a preset single coal preparation line conveying strategy; and if the two or more coal preparation lines are started to convey the pulverized coal, executing a preset conveying strategy of the two or more coal preparation lines. Therefore, the automatic identification and selection of the pulverized coal preparation line can be realized, a plurality of pulverized coal lines are fully automatically controlled to convey pulverized coal to the gasification furnace, the human intervention is reduced, the untimely and inaccurate human judgment is avoided, and the pulverized coal conveying safety is obviously improved.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to a method and device for automatically controlling the transportation of multiple pulverized coal lines in a dry pulverized coal gasification furnace. Background Art

[0002] Coal gasification technology is the core link in the coal chemical industry chain. The main task of the coal chemical gasification device is to use pressurized gasification technology to produce crude synthesis gas from the qualified coal powder preparation unit, which is then collected and sent to the downstream device. The coal powder preparation unit, as the raw material supply unit for the coal powder gasification reaction, is tasked with grinding, drying and sorting the raw coal from coal storage and transportation into qualified coal powder, which is then transported to the gasification device through the airflow conveying system. The pretreatment of the coal powder raw materials for the gasification reaction and the smoothness and timeliness of the supply directly determine the load stability of the gasifier and the quality of the crude synthesis gas, and play a vital role in the safe and stable production control of the entire coal gasification production process.

[0003] At present, the single-series coal powder transportation in coal chemical gasification equipment can be completed by DCS (distributed control system) sequential control. However, due to the complex control process, rotation maintenance between multiple series, changes in gasifier reaction load, coal powder storage, gasifier coal powder buffer storage and other factors, the entire process of coal powder transportation control is almost entirely completed by manual operation. The automation level is low, this method is extremely dependent on personnel experience, and it is difficult to form control operation logic, which greatly increases the risk and cost of gasifier operation. Summary of the invention

[0004] In view of the defects in the prior art, the object of the present invention is to provide a method and device for automatically controlling the transportation of multiple pulverized coal lines in a dry pulverized coal gasification furnace.

[0005] In a first aspect, an embodiment of the present application provides a method for automatically controlling the transportation of multiple pulverized coal lines in a pulverized coal gasifier, comprising:

[0006] Receiving various constraint conditions inputted on a DCS operation interface; the DCS is a distributed control system;

[0007] Collect the operation data of each coal preparation line and each gasifier;

[0008] According to the constraints, the operation data of each coal preparation line and the operation data of each gasifier, determine whether to start a single coal preparation line or two or more coal preparation lines for coal powder transportation;

[0009] If a single coal preparation line is started for coal powder transportation, the pre-set single coal preparation line transportation strategy will be executed;

[0010] If two or more coal preparation lines are started for coal powder transportation, the pre-set transportation strategy for two or more coal preparation lines will be executed.

[0011] Optionally, the various constraints include: constraints for each coal preparation line and constraints for each gasifier; the constraints for the coal preparation line include: upper and lower limit conditions for the material level of the coal preparation line; the constraints for the gasifier include: gasifier material collection conditions and upper limit conditions for the material level of the gasifier.

[0012] Optionally, according to the constraints, the operation data of each coal preparation line and the operation data of each gasifier, determining to start a single coal preparation line or two or more coal preparation lines for coal powder transportation includes:

[0013] When there is only one gasifier in operation and there are two or more coal preparation lines in operation, a single coal preparation line or two combined coal preparation lines shall be selected for coal powder transportation according to the gasifier material receiving conditions, the upper limit conditions of the gasifier material level, and the upper and lower limit conditions of the coal preparation line material level;

[0014] When there are two or more gasifiers in operation and two or more coal preparation lines in operation, a single coal preparation line or two combined coal preparation lines shall be selected for each gasifier for coal powder transportation according to the gasifier material receiving conditions of each gasifier, the upper limit conditions of the gasifier material level, and the upper and lower limit conditions of the coal preparation line material level.

[0015] Optionally, the executing of a preset single coal preparation line transportation strategy includes:

[0016] From two or more coal preparation lines, select an optimal single coal preparation line for coal powder transportation according to the material level of each coal preparation line and the material level deviation conditions of the coal preparation line;

[0017] When the first stop condition is met, the coal preparation line is controlled to stop coal powder transportation, wherein the first stop condition includes at least one of the following:

[0018] The coal powder level delivered to the gasifier is higher than the upper limit of the gasifier level;

[0019] A forced stop signal is received;

[0020] The gasifier reaches the pressure relief condition.

[0021] Optionally, the executing of a preset transportation strategy of two or more coal preparation lines includes:

[0022] Selecting two combined coal preparation lines for pulverized coal transportation for at least one gasifier;

[0023] Among the two combined coal preparation lines, according to the material level of the coal preparation line and whether the coal preparation line is currently in a standby state, determine the coal preparation line to be started first for coal powder transportation, and start timing when the coal preparation line is started;

[0024] If the coal powder level delivered to the gasifier is higher than the upper limit of the gasifier level before the switching time is reached, the coal preparation line is controlled to stop the coal powder delivery;

[0025] If the switching time is reached and the coal powder level delivered to the gasifier is not higher than the upper limit of the gasifier level, switch to another coal preparation line for coal powder delivery;

[0026] When the second stop condition is met, another coal preparation line is controlled to stop coal powder transportation, wherein the second stop condition includes at least one of the following:

[0027] The coal powder level delivered to the gasifier is higher than the upper limit of the gasifier level;

[0028] A forced stop signal is received;

[0029] The gasifier reaches the pressure relief condition.

[0030] Optionally, the switching time is determined by at least one of the following methods:

[0031] It is determined according to the material level of the two selected combined coal preparation lines;

[0032] Determined based on the material level deviation of the two selected combined coal preparation lines;

[0033] It is determined based on the number of gasifiers that the two selected combined coal preparation lines are responsible for.

[0034] Optionally, the method further comprises:

[0035] Convert the pulverized coal transportation mode from a single coal preparation line to two combined coal preparation lines; or

[0036] The coal powder transportation method is converted from two combined coal preparation lines to a single coal preparation line.

[0037] In a second aspect, the embodiment of the present application provides a pulverized coal gasification furnace multi-coal line conveying automatic control device, comprising:

[0038] A receiving module, used for receiving various constraint conditions inputted on a DCS operation interface; the DCS is a distributed control system;

[0039] The collection module is used to collect the operation data of each coal preparation line and the operation data of each gasifier;

[0040] A pulverized coal transportation determination module is used to determine whether to start a single coal preparation line or two or more coal preparation lines for pulverized coal transportation according to the various constraints, the operation data of each coal preparation line and the operation data of each gasifier;

[0041] The execution module is used to execute the pre-set single coal preparation line transportation strategy when starting a single coal preparation line for coal powder transportation; when starting two or more coal preparation lines for coal powder transportation, execute the pre-set two or more coal preparation line transportation strategy.

[0042] In a third aspect, an embodiment of the present application provides a pulverized coal gasification furnace multi-coal line conveying automatic control device, comprising: a processor and a memory, wherein the memory stores executable program instructions, and when the processor calls the program instructions in the memory, the processor is used to:

[0043] Execute the steps of the automatic control method for multiple pulverized coal line transportation in a dry pulverized coal gasification furnace as described in any one of the first aspects.

[0044] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium for storing a program, which, when executed, implements the steps of the automatic control method for multi-coal powder line transportation in a dry powder coal gasification furnace as described in any one of the first aspects.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] In this application, various constraints inputted on the DCS operation interface are received; the DCS is a distributed control system; the operation data of each coal preparation line and each gasifier are collected; according to the various constraints, the operation data of each coal preparation line and the operation data of each gasifier, it is determined whether to start a single coal preparation line or two or more coal preparation lines for coal powder transportation; if a single coal preparation line is started for coal powder transportation, the pre-set single coal preparation line transportation strategy is executed; if two or more coal preparation lines are started for coal powder transportation, the pre-set two or more coal preparation line transportation strategy is executed. Therefore, under many constraints, the optimal coal preparation line for coal powder transportation can be determined for each gasifier, and the autonomous identification and selection of coal powder preparation lines can be realized. Multiple coal powder lines are fully automatically controlled to transport coal powder to the gasifier, which greatly reduces human intervention, avoids the untimely and inaccurate human judgment, and significantly improves the safety of coal powder transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work. By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present invention will become more obvious:

[0048] Figure 1 A schematic diagram of a flow chart of an automatic control method for conveying multiple pulverized coal lines in a dry pulverized coal gasifier provided in an embodiment of the present application;

[0049] Figure 2 A flow chart of the main program for coal powder transportation provided in the embodiment of the present application;

[0050] Figure 3 A control flow chart of each coal preparation line provided in the embodiments of the present application;

[0051] Figure 4 A control flow chart for pressure relief detection provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0055] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0056] The following specific embodiments are used to describe in detail the technical solution of the present invention and how the technical solution of the present application solves the above technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0057] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0058] Figure 1 A schematic diagram of a flow chart of a method for automatically controlling the multi-coal pulverized coal line conveying of a dry pulverized coal gasification furnace provided in an embodiment of the present application, such as Figure 1 As shown, the method in this embodiment may include the following steps:

[0059] Step S101: receiving various constraint conditions input on the DCS operation interface.

[0060] Wherein, the DCS is a distributed control system.

[0061] In this embodiment, before executing step S101, the program design, optimization calculation, and constraint control can be performed based on the central control technology APC-Studio 4.0 agile control software, and the DCS operation interface can be drawn in combination with the existing distributed control system DCS. A plurality of manual input windows or controls are arranged on the DCS operation interface to receive various manually input constraints. For example, the user can set various relevant parameters on the operation interface, the operation status of each coal powder preparation line, the operation status of each gasifier, the gasifier material level value, and the upper and lower limits of each coal preparation material level.

[0062] Exemplarily, the various constraints include: constraints for each coal preparation line and constraints for each gasifier; the constraints for the coal preparation line include: upper and lower limit conditions for the material level of the coal preparation line; the constraints for the gasifier include: gasifier material collection conditions and upper limit conditions for the material level of the gasifier.

[0063] In this embodiment, the data collection and data processing of the entire automatic control can be realized through the OPC communication protocol, and data coking intermediate variables and user operation interfaces are established on the DCS to facilitate operators to input relevant parameters and view optimization output results in a timely manner.

[0064] In this embodiment, data storage and calculation, constraint boundary enforcement, automation and intelligent control can be realized through DCS. For example, by decomposing the entire large intelligent control and safety boundary problem into multiple different subsystem automatic control and constraint problems, and then using the actual on-site operation expert control experience, the problem is solved step by step within the constraint boundary range, so that the safety production boundary conditions can be considered, and intelligent control can be realized, and finally the autonomous operation of coal powder transportation can be realized, and finally the optimal safety production of the entire system can be obtained.

[0065] Step S102: Collect the operating data of each coal preparation line and the operating data of each gasifier.

[0066] In this embodiment, the operation data of each coal preparation line may include: whether each coal preparation line is in operation or waiting to be operated, the number of gasifiers each coal preparation line is responsible for, etc. The operation data of each gasifier may include: whether each gasifier is in operation, whether each gasifier receives a single coal preparation line or two combined coal preparations, etc.

[0067] Step S103: Determine whether to start a single coal preparation line or two or more coal preparation lines for coal powder transportation according to various constraints, operation data of each coal preparation line and operation data of each gasifier.

[0068] Exemplarily, when there is only one gasifier in operation and there are two or more coal preparation lines in operation, a single coal preparation line or two combined coal preparation lines are selected for coal powder transportation based on the gasifier's material receiving conditions, the upper limit conditions of the gasifier's material level, and the upper and lower limit conditions of the coal preparation line's material level.

[0069] This embodiment targets a many-to-one situation, that is, there are multiple coal preparation lines and one gasifier. In this case, one coal preparation line can transport pulverized coal to the gasifier, or two combined coal preparation lines can alternately transport pulverized coal to the gasifier.

[0070] Exemplarily, when there are two or more gasifiers in operation and there are two or more coal preparation lines in operation, a single coal preparation line or two combined coal preparation lines are selected for each gasifier for coal powder transportation according to the gasifier material receiving conditions of each gasifier, the upper limit conditions of the gasifier material level, and the upper and lower limit conditions of the coal preparation line material level.

[0071] In this embodiment, for the many-to-many situation, that is, there are two or more gasifiers in operation, it is necessary to control multiple coal preparation lines to transport coal powder to each gasifier. In this embodiment, one coal preparation line can transport coal powder to one gasifier, and can also transport coal powder to two or more gasifiers at the same time. One gasifier can receive coal powder transported by one coal preparation line, and can also receive coal powder transported by two or more coal preparation lines.

[0072] Step S104: if a single coal preparation line is started to transport pulverized coal, a preset single coal preparation line transport strategy is executed.

[0073] Exemplarily, from two or more coal preparation lines, an optimal single coal preparation line is selected for coal powder transportation according to the material level of each coal preparation line and the coal preparation line material level deviation condition; when the first stop condition is met, the coal preparation line is controlled to stop coal powder transportation, wherein the first stop condition includes at least one of the following:

[0074] The coal powder level delivered to the gasifier is higher than the upper limit of the gasifier level;

[0075] A forced stop signal is received;

[0076] The gasifier reaches the pressure relief condition.

[0077] In this embodiment, agile control software can be used to design and write the coal powder conveying start and stop program, and control each coal preparation line according to the designed coal powder conveying main program, reset, forced stop program, etc.

[0078] Step S105: If two or more coal preparation lines are started to transport pulverized coal, the pre-set transport strategy for the two or more coal preparation lines is executed.

[0079] Exemplarily, two combined coal preparation lines are selected for at least one gasifier to carry out coal powder transportation; among the two combined coal preparation lines, one coal preparation line to be started first is determined to carry out coal powder transportation according to the material level of the coal preparation line and whether the coal preparation line is currently in a standby state, and timing is started when the coal preparation line is started; if the coal powder level delivered to the gasifier is higher than the upper limit of the gasifier material level before the switching time is reached, the coal preparation line is controlled to stop coal powder transportation; if the switching time is reached and the coal powder level delivered to the gasifier is not higher than the upper limit of the gasifier material level, the other coal preparation line is switched to carry out coal powder transportation; when the second stop condition is met, the other coal preparation line is controlled to stop coal powder transportation, wherein the second stop condition includes at least one of the following:

[0080] The coal powder level delivered to the gasifier is higher than the upper limit of the gasifier level;

[0081] A forced stop signal is received;

[0082] The gasifier reaches the pressure relief condition.

[0083] In this embodiment, the switching time is determined by at least one of the following methods:

[0084] It is determined according to the material level of the two selected combined coal preparation lines;

[0085] Determined based on the material level deviation of the two selected combined coal preparation lines;

[0086] It is determined based on the number of gasifiers that the two selected combined coal preparation lines are responsible for.

[0087] In one possible implementation, the coal preparation line with a higher material level can be selected first among the two combined coal preparation lines to transport coal powder to the gasifier. When the material level of the coal preparation line is lower than that of the other coal preparation line, the switching time is determined.

[0088] In another possible implementation, the coal preparation line with a higher material level can be selected first among the two combined coal preparation lines to transport coal powder to the gasifier. When the material level of one coal preparation line is lower than that of the other coal preparation line and the material levels of both reach a preset deviation, the switching time is determined.

[0089] In another possible implementation, the coal preparation line responsible for fewer gasifiers can be selected first among the two combined coal preparation lines to deliver coal powder to the gasifiers. When the number of gasifiers responsible for the other coal preparation line decreases, the switching time is determined.

[0090] It should be noted that in addition to the above method steps, the coal powder transportation mode can be converted from transportation by a single coal preparation line to transportation by two combined coal preparation lines as needed; or, the coal powder transportation mode can be converted from transportation by two combined coal preparation lines to transportation by a single coal preparation line.

[0091] In this embodiment, by receiving various constraints input on the DCS operation interface; the DCS is a distributed control system; the operation data of each coal preparation line and the operation data of each gasifier are collected; according to the various constraints, the operation data of each coal preparation line and the operation data of each gasifier, it is determined whether to start a single coal preparation line or two or more coal preparation lines for coal powder transportation; if a single coal preparation line is started for coal powder transportation, the pre-set single coal preparation line transportation strategy is executed; if two or more coal preparation lines are started for coal powder transportation, the pre-set two or more coal preparation line transportation strategy is executed. Therefore, under many constraints, the optimal coal preparation line for coal powder transportation can be determined for each gasifier, and the autonomous identification and selection of coal powder preparation lines are realized. Multiple coal powder lines are fully automatically controlled to transport coal powder to the gasifier, which greatly reduces human intervention, avoids the untimely and inaccurate human judgment, and significantly improves the safety of coal powder transportation.

[0092] For example, the APC-Studio 4.0 agile control software of Central Control Technology provides high scalability and graphical configuration, combining expert control and graphics to realize the intelligent control of multiple series of pulverized coal conveying in dry pulverized coal gasifiers. With a single gasifier as a program carrier, multiple series of pulverized coal conveying automatic control programs can be composed of multiple pulverized coal conveying programs of gasifiers. Figure 2 The flowchart of the main program of pulverized coal transportation shown in the figure, after the user inputs the remainder of each series of coal preparation, the constraints of each series of gasifiers and other constraints, and collects the operation data of each series of coal, the operation data of each series of gasifiers and communication data in real time, the program is started, and the specific execution steps are:

[0093] Step a: After the program is running, the first stage enters the preparation stage, and the automatic control of coal powder transportation for a single gasifier is started. The program selects the optimal single coal preparation line or two coal preparation line combinations based on the required material collection conditions of the gasifier, the optional coal preparation line, the material level of the optional coal preparation line, the material level deviation of the coal preparation line and other conditions, and starts the coal powder transportation execution program.

[0094] Step b: Select a single coal preparation line, and the coal powder transportation execution program starts the single coal preparation line to transport coal powder. When the coal powder is transported to the gasifier and the material level is high, the coal powder transportation is automatically stopped and the program returns; when a forced stop signal is received, the coal powder transportation is automatically stopped and the program returns; when the gasifier pressure relief conditions are met, the coal powder transportation is automatically stopped and the program returns.

[0095] Step c: Select two coal preparation lines for combined coal powder transportation. The coal powder transportation execution program starts the priority coal preparation line according to the material level, whether it is in standby state and other conditions, and switches to the next coal preparation line after the switching time is reached. The switching time is automatically set by the program according to the material level of the two selected coal preparation lines, the material level deviation of multiple coal preparation lines responsible for this gasifier, and the number of gasifiers that multiple coal preparation lines need to be responsible for. When the coal powder is transported to the high material level of the gasifier, the coal powder transportation is automatically stopped. If a single coal preparation line has met the high material level of the gasifier within the switching time, the coal powder transportation is stopped and the program returns; if a single coal preparation line does not meet the high material level of the gasifier within the switching time, the current coal preparation line is stopped, and the coal preparation line is started to continue coal powder transportation until the high material level of the gasifier is met, and the program returns; when a forced stop signal is received, the coal powder transportation is automatically stopped, and the program returns; when the gasifier pressure relief condition is met, the coal powder transportation is automatically stopped, and the program returns.

[0096] Step d: Determine whether a stop signal is received. If so, end the process; if not, return to execute steps a to c.

[0097] In this embodiment, automatic and intelligent control of pulverized coal transportation for multiple gasifiers can be achieved.

[0098] For example, in the above Figure 1 , Figure 2 In the method embodiment shown, the control process of each coal preparation line is as follows Figure 3 As shown, in Figure 3 In the process, the start / reset procedure is used to make a pre-start procedure judgment, and then the pipeline valve is opened. If a pause signal is received, the sequential control pump is started / paused. If a stop signal is received, the sequential control pump is stopped. Finally, the pipeline valve is closed.

[0099] For example, in the above Figure 1 , Figure 2 In the method embodiment shown, the control process for pressure relief detection is as follows Figure 4 As shown, in Figure 4 In the process, the real-time pressure data of the gasifier is first collected to determine whether to open the pressure relief valve. If the pressure relief valve is opened, a pressure relief signal is fed back; when the pressure of the gasifier is lower than the preset value, the pressure relief ends.

[0100] This embodiment uses APC-Studio 4.0 agile control software to realize autonomous identification and selection of coal powder lines, and realizes full automation of coal powder delivery from multiple coal powder lines to gasifiers, greatly reducing the intensity of manual operation, untimely and inaccurate manual judgment, and realizing autonomous operation. By considering the safe production boundary in the process of coal powder delivery, the full automation of coal powder delivery from multiple coal powder lines to gasifiers reduces the uncertainty of manual operation and improves the safety of coal powder delivery.

[0101] In addition, an embodiment of the present application also provides an automatic control device for the transportation of multiple pulverized coal lines in a dry pulverized coal gasifier, comprising: a receiving module, used to receive various constraints input on a DCS operation interface; the DCS is a distributed control system; an acquisition module, used to collect the operating data of each coal preparation line and the operating data of each gasifier; a pulverized coal transportation determination module, used to determine whether to start a single coal preparation line or two or more coal preparation lines for pulverized coal transportation based on the various constraints, the operating data of each coal preparation line and the operating data of each gasifier; an execution module, used to execute a pre-set single coal preparation line transportation strategy when starting a single coal preparation line for pulverized coal transportation; when starting two or more coal preparation lines for pulverized coal transportation, execute a pre-set two or more coal preparation line transportation strategy.

[0102] The device in this embodiment can be used to perform the above Figure 1 , Figure 2 The various steps in the method embodiment shown are not repeated here.

[0103] It should be noted that those skilled in the art will appreciate that various aspects of the present invention may be implemented as systems, methods or program products. Therefore, various aspects of the present invention may be specifically implemented in the following forms, namely: complete hardware implementation, complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to as "circuit", "module" or "platform" herein.

[0104] In addition, an embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored. When at least one processor of a user device executes the computer-executable instructions, the user device executes the above-mentioned various possible methods. Among them, the computer-readable medium includes a computer storage medium and a communication medium, wherein the communication medium includes any medium that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer. An exemplary storage medium is coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a user device. Of course, the processor and the storage medium can also exist in a communication device as discrete components.

[0105] The present application also provides a program product, which includes a computer program. The computer program is stored in a readable storage medium. At least one processor of the server can read the computer program from the readable storage medium. At least one processor executes the computer program so that the server implements any method of the above-mentioned embodiments of the present invention.

[0106] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0107] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A method for automatically controlling the conveying of multiple pulverized coal lines in a dry pulverized coal gasifier, characterized in that: include: Receive various constraints entered on the DCS operation interface; The DCS is a distributed control system; Collect the operation data of each coal preparation line and each gasifier; According to the constraints, the operation data of each coal preparation line and the operation data of each gasifier, determine whether to start a single coal preparation line or two or more coal preparation lines for coal powder transportation; If a single coal preparation line is started for coal powder transportation, the pre-set single coal preparation line transportation strategy will be executed; If two or more coal preparation lines are started for coal powder transportation, the pre-set transportation strategy for two or more coal preparation lines will be executed.

2. The automatic control method for multi-coal pulverized line transportation of a dry pulverized coal gasifier according to claim 1 is characterized in that: The various constraints include: constraints for each coal preparation line and constraints for each gasifier; the constraints for the coal preparation line include: upper and lower limits of the material level of the coal preparation line; the constraints for the gasifier include: gasifier material collection conditions and upper limit of the material level of the gasifier.

3. The automatic control method for multi-coal pulverized line transportation of a dry pulverized coal gasifier according to claim 1 is characterized in that: According to the constraints, the operation data of each coal preparation line and the operation data of each gasifier, it is determined to start a single coal preparation line or two or more coal preparation lines for coal powder transportation, including: When there is only one gasifier in operation and there are two or more coal preparation lines in operation, a single coal preparation line or two combined coal preparation lines shall be selected for coal powder transportation according to the gasifier material receiving conditions, the upper limit conditions of the gasifier material level, and the upper and lower limit conditions of the coal preparation line material level; When there are two or more gasifiers in operation and two or more coal preparation lines in operation, a single coal preparation line or two combined coal preparation lines shall be selected for each gasifier for coal powder transportation according to the gasifier material receiving conditions of each gasifier, the upper limit conditions of the gasifier material level, and the upper and lower limit conditions of the coal preparation line material level.

4. The automatic control method for multi-coal pulverized line transportation of a dry pulverized coal gasifier according to any one of claims 1 to 3, characterized in that: The implementation of the preset single coal preparation line transportation strategy includes: From two or more coal preparation lines, select an optimal single coal preparation line for coal powder transportation according to the material level of each coal preparation line and the material level deviation conditions of the coal preparation line; When the first stop condition is met, the coal preparation line is controlled to stop coal powder transportation, wherein the first stop condition includes at least one of the following: The coal powder level delivered to the gasifier is higher than the upper limit of the gasifier level; A forced stop signal is received; The gasifier reaches the pressure relief condition.

5. The automatic control method for multi-coal pulverized line transportation of a pulverized coal gasifier according to any one of claims 1 to 3, characterized in that: The implementation of the pre-set two or more coal preparation line transportation strategies includes: Selecting two combined coal preparation lines for pulverized coal transportation for at least one gasifier; Among the two combined coal preparation lines, according to the material level of the coal preparation line and whether the coal preparation line is currently in a standby state, determine the coal preparation line to be started first for coal powder transportation, and start timing when the coal preparation line is started; If the coal powder level delivered to the gasifier is higher than the upper limit of the gasifier level before the switching time is reached, the coal preparation line is controlled to stop the coal powder delivery; If the switching time is reached and the coal powder level delivered to the gasifier is not higher than the upper limit of the gasifier level, switch to another coal preparation line for coal powder delivery; When the second stop condition is met, another coal preparation line is controlled to stop coal powder transportation, wherein the second stop condition includes at least one of the following: The coal powder level delivered to the gasifier is higher than the upper limit of the gasifier level; A forced stop signal is received; The gasifier reaches the pressure relief condition.

6. The automatic control method for multi-coal pulverized line transportation of a dry pulverized coal gasifier according to claim 5 is characterized in that: The switching time is determined in a manner including at least one of the following: It is determined according to the material level of the two selected combined coal preparation lines; Determined based on the material level deviation of the two selected combined coal preparation lines; It is determined based on the number of gasifiers that the two selected combined coal preparation lines are responsible for.

7. The automatic control method for multi-coal pulverized line transportation of a dry pulverized coal gasifier according to claim 3 is characterized in that: The method further comprises: Convert the pulverized coal transportation mode from a single coal preparation line to two combined coal preparation lines; or The coal powder transportation method is converted from two combined coal preparation lines to a single coal preparation line.

8. An automatic control device for conveying multiple pulverized coal lines in a dry pulverized coal gasification furnace, characterized in that: include: A receiving module is used to receive various constraint conditions input on the DCS operation interface; The DCS is a distributed control system; The collection module is used to collect the operation data of each coal preparation line and the operation data of each gasifier; A pulverized coal transportation determination module is used to determine whether to start a single coal preparation line or two or more coal preparation lines for pulverized coal transportation according to the various constraints, the operation data of each coal preparation line and the operation data of each gasifier; The execution module is used to execute the pre-set single coal preparation line transportation strategy when starting a single coal preparation line for coal powder transportation; when starting two or more coal preparation lines for coal powder transportation, execute the pre-set two or more coal preparation line transportation strategy.

9. An automatic control device for conveying multiple pulverized coal lines in a dry pulverized coal gasification furnace, characterized in that: include: A processor and a memory, wherein the memory stores executable program instructions, and when the processor calls the program instructions in the memory, the processor is used to: Execute the steps of the automatic control method for multiple pulverized coal line transportation in a dry pulverized coal gasification furnace as described in any one of claims 1 to 7.

10. A computer-readable storage medium for storing a program, characterized in that: When the program is executed, the steps of the automatic control method for multiple pulverized coal line transportation in a dry pulverized coal gasification furnace described in any one of claims 1 to 7 are implemented.

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