Gypsum calcining kiln waste heat cascade recovery system

Abstract

The invention discloses a gypsum calcining kiln waste heat cascade recovery system, which relates to the technical field of energy recovery, and comprises a waste heat collection device, a waste heat grading utilization device, a heat exchange device, an energy storage device, a control system and a monitoring unit, the waste heat collecting device is installed at a smoke exhaust pipeline of the gypsum calcining kiln and used for collecting smoke waste heat. The waste heat graded utilization device is connected to the waste heat collection device and is respectively conveyed to corresponding equipment; the heat exchange device is connected with the waste heat grading utilization device and used for completing heat transfer between the flue gas waste heat and the target medium; the energy storage device is connected to the heat exchange device and used for storing waste heat which is not used instantly. The monitoring units are arranged at key nodes and used for collecting temperature, flow and pressure data in real time and transmitting the data to the control system. And the control system is used for receiving data from the monitoring unit and performing optimization control on each device according to a preset algorithm. The waste heat recovery efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy recovery, and particularly to a cascade heat recovery system for the waste heat of a gypsum calcination kiln. Background Art

[0002] In the field of industrial production, the efficient utilization of energy has always been one of the key research directions. As an important link in the production of building materials, the process of gypsum calcination is usually accompanied by a large amount of high-temperature flue gas emissions, which contain rich waste heat resources. With the enhancement of energy conservation and environmental protection awareness and the increase in energy costs, waste heat recovery technology has gradually become a research hotspot in the field of industrial energy conservation. At present, common waste heat recovery technologies mainly include heat exchangers, waste heat boilers, and heat pump systems, etc. These technologies transfer the heat in the waste gas to the target medium to achieve partial reuse of energy. However, the existing waste heat recovery technologies mostly focus on the heat recovery of a single temperature range, lacking the ability to refine and classify the waste heat of different temperature gradients. In addition, traditional technologies have great limitations in heat storage and distribution, and it is difficult to meet diverse energy consumption demands, resulting in the inability to fully utilize some waste heat resources. Especially in the application scenario of a gypsum calcination kiln, due to the wide range of flue gas temperatures and large fluctuations in flow rates generated during the calcination process, it is difficult for existing technologies to achieve efficient separation and cascade utilization of high-temperature, medium-temperature, and low-temperature waste heat, thus causing energy waste.

[0003] The deficiencies of the existing technologies are mainly reflected in the following aspects: Firstly, traditional waste heat recovery devices usually adopt a single heat exchange device and cannot perform hierarchical treatment according to different temperature gradients of waste heat, resulting in the mixed use of high-grade heat and low-grade heat, reducing the overall energy utilization efficiency; Secondly, the development of heat storage technology lags behind. Existing systems mostly rely on hot water storage tanks or sensible heat storage methods, with low energy storage density and large heat losses, and it is difficult to adapt to complex industrial application scenarios; Thirdly, the intelligent level of the control system is insufficient. Existing technologies mostly rely on manual experience for parameter adjustment, lacking comprehensive collection and analysis of real-time operation data, and it is difficult to achieve dynamic optimization and fault diagnosis of the system. The existence of the above problems makes the existing waste heat recovery technologies show obvious limitations in practical applications, especially in high-energy-consuming and high-emission industrial scenarios such as gypsum calcination kilns, and their energy-saving potential has not been fully explored.

[0004] The main problems existing in the existing waste heat recovery technology of gypsum calcining kilns include: insufficient hierarchical utilization of waste heat, low heat storage efficiency, and insufficient intelligentization of the control system. The present invention proposes a cascade waste heat recovery system for gypsum calcining kilns in view of the above problems. By setting up a waste heat collection device, a waste heat hierarchical utilization device, a heat exchange device, an energy storage device, a control system, and a monitoring unit, it realizes the refined hierarchical recovery and efficient utilization of high-temperature, medium-temperature, and low-temperature waste heat. At the same time, combined with intelligent control technology, it optimizes the operating parameters and improves the energy utilization efficiency. The present invention belongs to the technical field of energy recovery and utilization, solves the problems of low waste heat recovery efficiency and serious energy waste in the existing technology, and has remarkable technological progress and economic value. Summary of the Invention

[0005] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the specification of this application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the above existing problems, the present invention is proposed.

[0007] Therefore, the present invention provides a cascade waste heat recovery system for gypsum calcining kilns, which can solve the problems mentioned in the background art.

[0008] To solve the above technical problems, the present invention provides the following technical solutions:

[0009] In a first aspect, the present invention provides a cascade waste heat recovery system for gypsum calcining kilns, which includes a waste heat collection device, a waste heat hierarchical utilization device, a heat exchange device, an energy storage device, a control system, and a monitoring unit;

[0010] The waste heat collection device is installed at the smoke exhaust pipe of the gypsum calcining kiln and is used to collect the waste heat of the flue gas generated during the calcination process;

[0011] The waste heat hierarchical utilization device is connected to the waste heat collection device and is used to divide the waste heat of the flue gas into three parts: high, medium, and low temperature according to the temperature gradient, and respectively transport them to the corresponding equipment;

[0012] The heat exchange device is connected to the waste heat hierarchical utilization device and is used to complete the heat transfer between the waste heat of the flue gas and the target medium;

[0013] The energy storage device is connected to the heat exchange device and is used to store the waste heat that is not immediately used;

[0014] The monitoring unit is arranged at each key node, and is used for collecting temperature, flow rate and pressure data in real time and transmitting them to the control system;

[0015] The control system is used for receiving data from the monitoring unit and performing optimized control on each device according to a preset algorithm.

[0016] As a preferred scheme of the waste heat cascade recovery system of the gypsum calcining kiln according to the present invention, wherein: the waste heat collection device includes a flue gas diversion cover and a heat collecting pipe made of high-temperature resistant materials, and the heat collecting pipe guides the flue gas to the waste heat hierarchical utilization device through the flue gas diversion cover.

[0017] As a preferred scheme of the waste heat cascade recovery system of the gypsum calcining kiln according to the present invention, wherein: the waste heat hierarchical utilization device includes three-stage heat exchangers, wherein the first-stage heat exchanger processes waste heat in the high-temperature section, the second-stage heat exchanger processes waste heat in the medium-temperature section, and the third-stage heat exchanger processes waste heat in the low-temperature section;

[0018] The waste heat in the high-temperature section is greater than 400 °C, the waste heat in the medium-temperature section is greater than 200 °C and less than 400 °C, and the waste heat in the low-temperature section is less than 200 °C.

[0019] As a preferred scheme of the waste heat cascade recovery system of the gypsum calcining kiln according to the present invention, wherein: the heat exchange device includes a plate heat exchanger and a shell-and-tube heat exchanger, the plate heat exchanger is used for transferring waste heat in the high-temperature section, and the shell-and-tube heat exchanger is used for transferring waste heat in the medium-low temperature section.

[0020] As a preferred scheme of the waste heat cascade recovery system of the gypsum calcining kiln according to the present invention, wherein: the energy storage device includes a phase change heat storage module and a hot water storage tank, the phase change heat storage module stores waste heat in the high-temperature section, and the hot water storage tank stores waste heat in the medium-low temperature section.

[0021] As a preferred scheme of the waste heat cascade recovery system of the gypsum calcining kiln according to the present invention, wherein: the control system includes a central processor, a communication module and a human-machine interaction interface, the central processor receives data from the monitoring unit through the communication module, generates operating parameters according to a preset model, and simultaneously displays the system status and operation options through the human-machine interaction interface.

[0022] As a preferred scheme of the waste heat cascade recovery system of the gypsum calcining kiln according to the present invention, wherein: the control system further includes a fault diagnosis module, and the fault diagnosis module triggers an alarm signal when the monitoring unit detects abnormal data and outputs a maintenance suggestion.

[0023] In a second aspect, the present invention provides a method for cascaded recovery of waste heat from a gypsum calcination kiln, which includes: the control system collects key operation data of the waste heat collection device, the waste heat cascaded utilization device, the heat exchange device, and the energy storage device through the monitoring unit;

[0024] The control system analyzes the received key operation data and calculates the optimal operation mode of the waste heat cascaded utilization device in combination with a preset algorithm;

[0025] The control system sends an instruction to the waste heat cascaded utilization device according to the optimal operation mode to adjust the working state of each heat exchanger;

[0026] The control system synchronously adjusts the operation parameters of the heat exchange device to complete heat transfer;

[0027] The control system further optimizes the storage strategy of the energy storage device and distributes the waste heat that is not immediately used;

[0028] The control system integrates the operation states of the waste heat cascaded utilization device, the heat exchange device, and the energy storage device to generate overall system operation parameters.

[0029] In a third aspect, the present invention provides a computer device, including a memory and a processor, where the memory stores a computer program, and: when the processor executes the computer program, the steps of the waste heat cascaded recovery system of the gypsum calcination kiln are implemented.

[0030] In a fourth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, and: when the computer program is executed by a processor, the steps of the waste heat cascaded recovery system of the gypsum calcination kiln are implemented.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention efficiently captures the waste heat of the high-temperature flue gas discharged from the gypsum calcination kiln through the waste heat collection device, reducing heat loss and providing a stable heat source for subsequent utilization; through the waste heat hierarchical utilization device, the waste heat is separated according to the temperature gradient, realizing the refined management of heat in the high-temperature, medium-temperature, and low-temperature sections, meeting diverse energy consumption needs and avoiding the decline of energy quality; through the heat exchange device, plate heat exchangers and shell-and-tube heat exchangers adapted to different temperature sections are used to ensure the efficient transfer of heat and significantly reduce heat loss; through the energy storage device, the phase change heat storage module and the hot water storage tank are used to store the waste heat that is not immediately used, realizing the time-shifted utilization of heat, balancing the fluctuations between energy supply and energy consumption; through the monitoring unit, key operation data is collected in real time to comprehensively monitor the system status, providing an accurate basis for optimization control and fault diagnosis, and improving the system reliability; through the control system, optimized operation parameters are generated based on the monitoring data to dynamically adjust the working states of each device, realizing the intelligent and coordinated operation of the system, and further reducing energy consumption and operation and maintenance costs. In summary, through the close connection and collaborative effect of each step, the present invention significantly improves the waste heat recovery efficiency, reduces energy waste, enhances the flexibility and stability of the system operation, and finally realizes the dual improvement of economic benefits and environmental benefits, belonging to an important innovative achievement in the technical field of energy recovery and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 It is the system structure diagram of a waste heat cascade recovery system for a gypsum calcination kiln provided by an embodiment of the present invention;

[0034] Figure 2 It is the internal structure diagram of a computer device of a waste heat cascade recovery system for a gypsum calcination kiln provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to make the above objects, features, and advantages of the present invention more understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] In the following description, many specific details are set forth to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0037] Secondly, as used herein, "an embodiment" or "embodiments" refers to specific features, structures, or characteristics that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an isolated or alternative embodiment mutually exclusive with other embodiments.

[0038] Embodiment 1, referring to Figure 1 - Figure 2 , is the first embodiment of the present invention. This embodiment provides a system for cascaded recovery of waste heat from a gypsum calcination kiln, including:

[0039] This application can effectively solve the above-mentioned problems. Next, multiple embodiments will be combined to elaborate in detail how to implement the system for cascaded recovery of waste heat from a gypsum calcination kiln;

[0040] Figure 1 The system structure diagram of a system for cascaded recovery of waste heat from a gypsum calcination kiln is shown, including:

[0041] A waste heat collection device, a waste heat cascaded utilization device, a heat exchange device, an energy storage device, a control system, and a monitoring unit;

[0042] The waste heat collection device is installed at the smoke exhaust pipe of the gypsum calcination kiln and is used to collect the waste heat of the flue gas generated during the calcination process;

[0043] The waste heat cascaded utilization device is connected to the waste heat collection device and is used to divide the waste heat of the flue gas into three parts: high, medium, and low temperatures according to the temperature gradient, and respectively transport them to the corresponding equipment;

[0044] The heat exchange device is connected to the waste heat cascaded utilization device and is used to complete the heat transfer between the waste heat of the flue gas and the target medium;

[0045] The energy storage device is connected to the heat exchange device and is used to store the waste heat that is not immediately used;

[0046] The monitoring unit is set at each key node and is used to collect temperature, flow rate, and pressure data in real time and transmit them to the control system;

[0047] The control system is used to receive data from the monitoring unit and optimize the control of each device according to a preset algorithm.

[0048] Furthermore, the waste heat collection device includes a flue gas guide cover made of high-temperature resistant material and a heat collecting pipe. The heat collecting pipe guides the flue gas to the waste heat hierarchical utilization device through the flue gas guide cover.

[0049] Furthermore, the waste heat hierarchical utilization device includes three-stage heat exchangers. The first-stage heat exchanger processes the waste heat in the high-temperature section, the second-stage heat exchanger processes the waste heat in the medium-temperature section, and the third-stage heat exchanger processes the waste heat in the low-temperature section. The waste heat in the high-temperature section is greater than 400 °C, the waste heat in the medium-temperature section is greater than 200 °C and less than 400 °C, and the waste heat in the low-temperature section is less than 200 °C.

[0050] Furthermore, the heat exchange device includes a plate heat exchanger and a shell-and-tube heat exchanger. The plate heat exchanger is used to transfer the waste heat in the high-temperature section, and the shell-and-tube heat exchanger is used to transfer the waste heat in the medium- and low-temperature sections.

[0051] Furthermore, the energy storage device includes a phase change heat storage module and a hot water storage tank. The phase change heat storage module stores the waste heat in the high-temperature section, and the hot water storage tank stores the waste heat in the medium- and low-temperature sections.

[0052] Furthermore, the control system includes a central processor, a communication module, and a human-machine interaction interface. The central processor receives the data of the monitoring unit through the communication module, generates operation parameters according to the preset model, and simultaneously displays the system status and operation options through the human-machine interaction interface.

[0053] Furthermore, the control system also includes a fault diagnosis module. The fault diagnosis module triggers an alarm signal when the monitoring unit detects abnormal data and outputs maintenance suggestions.

[0054] Furthermore, this embodiment also provides a method for cascaded recovery of waste heat from a gypsum calcining kiln, including:

[0055] The control system collects the key operation data of the waste heat collection device, the waste heat hierarchical utilization device, the heat exchange device, and the energy storage device through the monitoring unit;

[0056] The control system analyzes the received key operation data and calculates the optimal operation mode of the waste heat hierarchical utilization device in combination with the preset algorithm;

[0057] The control system sends instructions to the waste heat hierarchical utilization device according to the optimal operation mode to adjust the working states of each stage of heat exchangers;

[0058] The control system synchronously regulates the operation parameters of the heat exchange device to complete heat transfer;

[0059] The control system further optimizes the storage strategy of the energy storage device and distributes the waste heat that is not immediately used;

[0060] The control system integrates the operation states of the waste heat hierarchical utilization device, the heat exchange device, and the energy storage device to generate the overall operation parameters of the system.

[0061] This embodiment also provides a computer device, which may be a terminal, and its internal structure diagram may be as shown in Figure 2 the figure. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a carrier network, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it realizes a waste heat cascade recovery system for a gypsum calcining kiln. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covered on the display screen, or may be a button, a trackball, or a touchpad provided on the outer shell of the computer device, or may also be an external keyboard, touchpad, or mouse, etc.

[0062] This embodiment also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by the processor, the following steps are realized: The control system collects key operation data of the waste heat collection device, the waste heat hierarchical utilization device, the heat exchange device, and the energy storage device through the monitoring unit;

[0063] The control system analyzes the received key operation data and calculates the optimal operation mode of the waste heat hierarchical utilization device in combination with a preset algorithm;

[0064] The control system sends an instruction to the waste heat hierarchical utilization device according to the optimal operation mode to adjust the working state of each heat exchanger;

[0065] The control system synchronously regulates the operation parameters of the heat exchange device to complete heat transfer;

[0066] The control system further optimizes the storage strategy of the energy storage device and distributes the waste heat that is not immediately used;

[0067] The control system integrates the operation states of the waste heat hierarchical utilization device, the heat exchange device, and the energy storage device to generate the overall operation parameters of the system

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

[0069] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of the present application can be implemented in various computer languages. For example, object-oriented programming languages such as Java and interpreted scripting languages such as JavaScript.

[0070] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0071] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0072] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1Steps of the functions specified in one or more boxes.

[0073] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications that fall within the scope of the present application.

[0074] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. A gypsum calcining kiln waste heat cascade recovery system, characterized in that: It includes a waste heat collection device, a waste heat classification utilization device, a heat exchange device, an energy storage device, a control system and a monitoring unit; The waste heat collection device is installed at the smoke exhaust pipe of the gypsum calcining kiln to collect the waste heat of the smoke generated during the calcining process; The waste heat classification utilization device is connected to the waste heat collection device, and is used to divide the flue gas waste heat into three parts: high, medium and low temperature according to the temperature gradient, and transport them to corresponding equipment respectively; The heat exchange device is connected to the waste heat classification utilization device, and is used to complete the heat transfer between the flue gas waste heat and the target medium; The energy storage device is connected to the heat exchange device for storing waste heat that is not immediately used; The monitoring unit is arranged at each key node to collect temperature, flow and pressure data in real time and transmit the data to the control system; The control system is used to receive data from the monitoring unit and optimize the control of each device according to a preset algorithm.

2. The gypsum calcining kiln waste heat cascade recovery system according to claim 1, characterized in that: The waste heat collection device comprises a flue gas guide hood and a heat collecting pipe made of high temperature resistant material. The heat collecting pipe guides the flue gas to the waste heat graded utilization device through the flue gas guide hood.

3. The gypsum calcining kiln waste heat cascade recovery system according to claim 2, characterized in that: The waste heat classification utilization device includes a three-stage heat exchanger, wherein the first-stage heat exchanger processes the waste heat of the high-temperature section, the second-stage heat exchanger processes the waste heat of the medium-temperature section, and the third-stage heat exchanger processes the waste heat of the low-temperature section; The waste heat in the high temperature section is greater than 400°C, the waste heat in the medium temperature section is greater than 200°C and less than 400°C, and the waste heat in the low temperature section is less than 200°C.

4. The gypsum calcining kiln waste heat cascade recovery system according to claim 3, characterized in that: The heat exchange device includes a plate heat exchanger and a shell and tube heat exchanger. The plate heat exchanger is used to transfer waste heat in a high-temperature section, and the shell and tube heat exchanger is used to transfer waste heat in a medium- and low-temperature section.

5. The gypsum calcining kiln waste heat cascade recovery system according to claim 4, characterized in that: The energy storage device comprises a phase change heat storage module and a hot water storage tank. The phase change heat storage module stores waste heat in a high temperature section, and the hot water storage tank stores waste heat in a medium and low temperature section.

6. The gypsum calcining kiln waste heat cascade recovery system according to claim 5, characterized in that: The control system includes a central processing unit, a communication module and a human-computer interaction interface. The central processing unit receives data from the monitoring unit through the communication module, generates operating parameters according to a preset model, and displays system status and operation options through the human-computer interaction interface.

7. The gypsum calcining kiln waste heat cascade recovery system according to claim 6, characterized in that: The control system further includes a fault diagnosis module, which triggers an alarm signal and outputs maintenance suggestions when the monitoring unit detects abnormal data.

8. A gypsum calcining kiln waste heat cascade recovery method, based on the gypsum calcining kiln waste heat cascade recovery system according to any one of claims 1 to 7, characterized in that: include, The control system collects key operating data of the waste heat collection device, the waste heat classification utilization device, the heat exchange device and the energy storage device through the monitoring unit; The control system analyzes the received key operation data and calculates the optimal operation mode of the waste heat classification utilization device in combination with a preset algorithm; The control system sends instructions to the waste heat classification utilization device according to the optimal operation mode to adjust the working state of each stage of the heat exchanger; The control system synchronously regulates the operating parameters of the heat exchange device to complete the heat transfer; The control system further optimizes the storage strategy of the energy storage device to allocate waste heat that is not immediately used; The control system integrates the operating states of the waste heat classification utilization device, the heat exchange device and the energy storage device to generate overall system operating parameters.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the gypsum calcining kiln waste heat cascade recovery system according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the gypsum calcining kiln waste heat cascade recovery system according to any one of claims 1 to 7 are implemented.

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