Method, system, storage medium and electronic device for reducing energy consumption

Abstract

The application provides a method, system, storage medium and electronic device for reducing energy consumption. The method comprises determining the amount of coal powder input into a gasifier according to a preset power generation amount, determining the input amount of inert gas according to the amount of coal powder, the inert gas being used as a conveying carrier gas to convey the coal powder into the gasifier, the inert gas comprising nitrogen or carbon dioxide or a mixture of nitrogen and carbon dioxide, determining the first content of nitrogen separated by an air separator connected to the gasifier and the second content of carbon dioxide input into the gasifier according to the input amount of the inert gas, and using the first content of nitrogen and the second content of carbon dioxide as the conveying carrier gas to convey the coal powder, thereby solving the problems of low energy conversion efficiency and high energy consumption in the IGCC system in the prior art.

Description

Technical Field

[0001] This invention relates to the field of coal combustion technology, and more specifically, to a method, system, storage medium, and electronic device for reducing energy consumption. Background Technology

[0002] Integrated Gasification Combined Cycle (IGCC) power generation systems are advanced energy conversion technologies that combine coal gasification with efficient power generation, achieving higher energy efficiency and lower pollutant emissions. The basic principle of an IGCC system is that coal is first converted into syngas in a gasifier, typically composed of carbon monoxide (CO), hydrogen (H2), methane (CH4), carbon dioxide (CO2), and other byproducts. The syngas is then purified to remove hydrogen sulfide (H2S) and other impurities. The resulting clean gas is used to drive a gas turbine to generate electricity, while the exhaust gas from the gas turbine is used to produce steam, which drives a steam turbine to further generate electricity, thus forming a combined cycle.

[0003] Currently, IGCC systems typically use air separation units to produce oxygen (O2) and nitrogen (N2). Oxygen is used for coal gasification, while nitrogen is used as a carrier gas for transporting pulverized coal and maintaining the system's inert environment. However, the use of nitrogen not only increases the system's energy consumption but also introduces additional inert gas during the gasification process, reducing the quality and calorific value of the syngas. Furthermore, the energy consumption and cost of air separation units are relatively high, which has a certain impact on the economy and efficiency of the entire IGCC system.

[0004] In the subsequent treatment stages of the IGCC system, such as the MDEA (N-methyldiethanolamine) desulfurization system and the LO-CAT (liquid phase oxidation catalyst) sulfur recovery system, the aim is to further purify the syngas to ensure it meets the operating conditions of the power generation equipment. While these purification steps improve the cleanliness of the energy, they also involve energy and material losses, thus affecting the overall efficiency of the power generation system. Summary of the Invention

[0005] The main objective of this invention is to provide a method, system, storage medium, and electronic device for reducing energy consumption, in order to solve the problems of low energy conversion efficiency and high energy consumption in existing IGCC systems.

[0006] To achieve the above objectives, according to one aspect of the present invention, a method for reducing energy consumption is provided, comprising:

[0007] Based on the preset power generation, the amount of pulverized coal input to the gasifier is determined, and the amount of inert gas input is determined based on the amount of pulverized coal. The inert gas is used as a carrier gas to transport the pulverized coal to the gasifier. The inert gas includes nitrogen or carbon dioxide, or a mixture of nitrogen and carbon dioxide.

[0008] Based on the input amount of inert gas, the first content of nitrogen separated by the air separator connected to the gasifier and the second content of carbon dioxide input into the gasifier are determined. The first content of nitrogen and the second content of carbon dioxide are used as carrier gas to input pulverized coal into the gasifier, so that the second content of carbon dioxide and pulverized coal can react chemically in the gasifier to reduce energy consumption.

[0009] Furthermore, the step of determining the amount of pulverized coal input to the gasifier based on the preset power generation includes:

[0010] The content of syngas produced by the gasifier corresponding to the preset power generation is determined based on the preset power generation. The syngas includes nitrogen, carbon dioxide, and a mixture of nitrogen and carbon dioxide.

[0011] The amount of pulverized coal fed into the gasifier is determined based on the syngas content.

[0012] Furthermore, the method also includes:

[0013] The real-time carbon dioxide content at the outlet of the synthesis furnace is detected. When the real-time carbon dioxide content at the outlet of the synthesis furnace is greater than or equal to the set content, the carbon dioxide at the outlet of the synthesis furnace is controlled to be used as the transport carrier gas, and the pulverized coal is transported into the synthesis furnace at a second content based on the carbon dioxide at the outlet of the synthesis furnace.

[0014] Furthermore, if the real-time carbon dioxide content at the outlet of the synthesis furnace is less than the set content, nitrogen is used as the transport carrier gas.

[0015] According to another aspect of the present invention, a system for reducing energy consumption is provided, comprising:

[0016] An air separation device, used to separate nitrogen and oxygen;

[0017] The gasifier has its inlet connected to the outlet of the air separator to provide a combustion site for the pulverized coal.

[0018] Waste heat boiler, the inlet end of which is connected to the outlet end of the gasifier to absorb the heat generated by the gasifier during the combustion of pulverized coal.

[0019] The dust removal wet cleaning component has its inlet end connected to the outlet end of the waste heat boiler to absorb impurities in the syngas generated after the coal powder is burned in the gasifier.

[0020] The system also includes a membrane separation unit, which is located between the dust removal and wet scrubbing unit and the gasifier inlet. The membrane separation unit separates the carbon dioxide from the syngas as a carrier gas, which is then transported to the gasifier along with the pulverized coal.

[0021] Furthermore, the system also includes:

[0022] The control valve is located on the pipeline between the membrane separation unit and the gasifier inlet to control the carbon dioxide content input to the gasifier based on the combustion status of the pulverized coal in the gasifier.

[0023] Furthermore, the membrane separation component is equipped with any one of a polymer membrane, a metal-organic framework, or a composite membrane to collect carbon dioxide from the syngas.

[0024] According to another aspect of the present invention, a computer-readable storage medium is also provided, comprising a stored program, wherein the program executes the above-described energy-saving method when it is run.

[0025] According to another aspect of the present invention, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to perform any of the methods described above through the computer program.

[0026] According to another aspect of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements the method described above.

[0027] By applying the technical solution of this invention, this application reduces the use of nitrogen and the energy consumption of the air separation device, thereby improving the energy conversion efficiency of the entire IGCC power generation system. By utilizing the chemical properties of CO2, it promotes the water-gas shift reaction in the coal gasification reaction, increases the ratio of H2 and CO in the syngas, thereby increasing the calorific value of the syngas and increasing power generation output. At the same time, it also increases the system's recovery and reuse of CO2, which helps to reduce greenhouse gas emissions and is in line with the goals of carbon emission trading policies. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 A hardware block diagram of a computer terminal for a method of reducing energy consumption according to an embodiment of this application is shown.

[0030] Figure 2 A flowchart illustrating a method for reducing energy consumption according to an embodiment of this application is shown. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] Integrated Gasification Combined Cycle (IGCC) power generation systems are advanced energy conversion technologies that combine coal gasification with efficient power generation, achieving higher energy efficiency and lower pollutant emissions. The basic principle of an IGCC system is that coal is first converted into syngas in a gasifier, typically composed of carbon monoxide (CO), hydrogen (H2), methane (CH4), carbon dioxide (CO2), and other byproducts. The syngas is then purified to remove hydrogen sulfide (H2S) and other impurities. The resulting clean gas is used to drive a gas turbine to generate electricity, while the exhaust gas from the gas turbine is used to produce steam, which drives a steam turbine to further generate electricity, thus forming a combined cycle.

[0033] Currently, IGCC systems typically use air separation units to produce oxygen (O2) and nitrogen (N2). Oxygen is used for coal gasification, while nitrogen is used as a carrier gas for transporting pulverized coal and maintaining the system's inert environment. However, the use of nitrogen not only increases the system's energy consumption but also introduces additional inert gas during the gasification process, reducing the quality and calorific value of the syngas. Furthermore, the energy consumption and cost of air separation units are relatively high, which has a certain impact on the economy and efficiency of the entire IGCC system.

[0034] In the subsequent treatment stages of the IGCC system, such as the MDEA (N-methyldiethanolamine) desulfurization system and the LO-CAT (liquid phase oxidation catalyst) sulfur recovery system, the aim is to further purify the syngas to ensure it meets the operating conditions of the power generation equipment. While these purification steps improve the cleanliness of the energy, they also involve energy and material losses, thus affecting the overall efficiency of the power generation system.

[0035] The methods and embodiments provided in this application can be executed on a computer terminal, mobile terminal, or similar computing device. Taking running on a computer terminal as an example, Figure 1 This is a hardware structure block diagram of a computer terminal for a method of managing regenerative energy consumption according to an embodiment of this application. For example... Figure 1 As shown, a computer terminal may include one or N ( Figure 1Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor (Central Processing Unit, CPU) or a programmable gate array (FPGA)) and a memory 104 for storing data are also shown. The computer terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the computer terminal described above. For example, the computer terminal may also include components that are more complex than those described above. Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0036] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the network point adjustment method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thus implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0037] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider for the computer terminal. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0038] The main objective of this invention is to provide a method, system, storage medium, and electronic device for reducing energy consumption, in order to solve the problems of low energy conversion efficiency and high energy consumption in existing IGCC systems.

[0039] This application first provides a method for reducing energy consumption, such as Figure 2 As shown, it includes:

[0040] S1. Determine the amount of pulverized coal to be input into the gasifier based on the preset power generation, and determine the amount of inert gas to be input based on the amount of pulverized coal. The inert gas is used as a carrier gas to transport the pulverized coal to the gasifier. The inert gas includes nitrogen or carbon dioxide, or a mixture of nitrogen and carbon dioxide.

[0041] S2. Based on the input amount of inert gas, determine the first content of nitrogen separated by the air separator connected to the gasifier and the second content of carbon dioxide input into the gasifier. Use the first content of nitrogen and the second content of carbon dioxide as carrier gas to input pulverized coal into the gasifier so that the second content of carbon dioxide and pulverized coal can react chemically in the gasifier to reduce energy consumption.

[0042] Specifically, firstly, based on the preset power generation target, the required syngas production to achieve that target is calculated. Based on the syngas production demand, the required amount of pulverized coal for gasification is further calculated. The specific calculation method described above is existing technology and will not be elaborated here. Based on the gasifier's operating parameters, including temperature, pressure, and the stoichiometric ratio of oxygen to coal, the input amount of pulverized coal is determined. Simultaneously, based on the gasifier's needs, the total amount of inert gas required to transport the pulverized coal is calculated. This total amount will include nitrogen (N2), carbon dioxide (CO2), and mixtures thereof; nitrogen separated by the air separation system connected to the gasifier (such as a cryogenic air separation unit); and carbon dioxide recovered from the energy-saving system or purchased externally. Based on the calculation results in the above steps, the ratio of these two gases in the carrier gas is adjusted to optimize the gasification process and reduce energy loss. Specifically, this is achieved by increasing the proportion of carbon dioxide in the inert gas. By reducing nitrogen usage, the energy consumption of the air separation system is lowered. Simultaneously, the chemical reaction characteristics of CO2 and pulverized coal are utilized to improve gasification efficiency and syngas quality. In the gasifier, the optimized carrier gas (containing a high proportion of CO2) undergoes a coal gasification reaction with pulverized coal. The presence of CO2 helps promote the water-gas shift reaction, reduces residual carbon loss, and improves coal gasification efficiency. Furthermore, the contact and reaction between CO2 and pulverized coal improves the thermodynamic conditions of the gasifier, such as increasing the reaction temperature, thereby producing syngas with a higher calorific value. Through these steps, the overall efficiency of the power plant is improved, the energy consumption of the air separation unit is reduced, and the calorific value of the syngas is increased. In addition, the increased recovery and reuse of CO2 helps reduce CO2 emissions, achieving a more environmentally friendly power generation process.

[0043] This application improves the energy conversion efficiency of the entire IGCC power generation system by reducing the use of nitrogen and lowering the energy consumption of the air separation unit. It also utilizes the chemical properties of CO2 to promote the water-gas shift reaction in the coal gasification process, increasing the ratio of H2 and CO in the syngas, thereby increasing the calorific value of the syngas and increasing power generation output. At the same time, it also increases the system's recovery and reuse of CO2, which helps reduce greenhouse gas emissions and is in line with the goals of carbon emission trading policies.

[0044] Furthermore, the content of syngas produced by the gasifier corresponding to the preset power generation is determined according to the preset power generation. The syngas includes nitrogen, carbon dioxide, and a mixture of nitrogen and carbon dioxide.

[0045] The amount of pulverized coal fed into the gasifier is determined based on the syngas content.

[0046] Specifically, based on the preset power generation, the total content of syngas required to be produced by the gasifier is calculated, including CO2, N2, and their mixtures. Strategies for optimizing the carrier gas composition include: increasing the proportion of CO2 to promote the water-gas shift reaction in the coal gasification process, reducing residual carbon loss, and increasing the calorific value of the syngas; adjusting the mixing ratio of N2 and CO2 to ensure that the quality and calorific value of the syngas meet the needs of the power generation system, while reducing the energy consumption of the air separation system; after determining the amount of pulverized coal and the carrier gas composition, adjusting the operating parameters of the gasifier, including temperature, pressure, and oxygen supply, to ensure the stability and efficiency of the coal gasification process, while meeting the requirements for syngas yield and composition; and continuously monitoring system performance, including syngas yield, quality, and power generation, and adjusting the amount of pulverized coal, carrier gas composition, and gasifier operating parameters based on real-time data to maintain the optimal operating state of the system.

[0047] S3. Further, the method also includes: detecting the real-time content of carbon dioxide at the outlet of the synthesis furnace, determining that when the real-time content of carbon dioxide at the outlet of the synthesis furnace is greater than or equal to the set content, controlling the carbon dioxide at the outlet of the synthesis furnace as the transport carrier gas, and controlling the pulverized coal to be transported into the synthesis furnace at a second content from the carbon dioxide at the outlet of the synthesis furnace.

[0048] Specifically, a high-precision gas analyzer is installed at the gasifier outlet to continuously monitor the real-time carbon dioxide (CO2) content in the syngas. The key to this step is accurately and in real-time understanding the CO2 generation during the gasification process, providing data support for subsequent control strategies. When the real-time CO2 content detected by the gas analyzer reaches or exceeds a set threshold, the control system will initiate a corresponding program to control the switching of the carrier gas used to transport pulverized coal to the gasifier. At this time, the high-concentration CO2 gas at the gasifier outlet is used as the carrier gas, replacing part or all of the nitrogen (N2). The system dynamically adjusts the CO2 concentration in the carrier gas based on the real-time monitored CO2 content. The second aspect, the CO2 content, ensures that the gasifier's operating conditions and syngas quality remain unaffected. With CO2 as the carrier gas, adjusting its content directly impacts the efficiency of the coal gasification reaction and the calorific value of the syngas. By implementing this real-time monitoring and control strategy, the IGCC power generation system can flexibly adjust gasifier operating parameters and optimize carrier gas composition based on actual operating conditions to achieve optimal gas conversion rate and energy utilization efficiency. Simultaneously, it increases the system's CO2 reuse and reduces dependence on expensive nitrogen. During the adjustment process, the system's safety and stability must be ensured to prevent gasifier instability or syngas quality degradation due to sudden changes in carrier gas composition. Therefore, the control system design needs to consider a balance between rapid response and smooth transition.

[0049] This application reduces nitrogen usage and lowers the energy consumption of the air separation system by using high-concentration CO2 at the gasifier outlet as the carrier gas, thereby improving the energy efficiency of the entire IGCC power generation system, reducing nitrogen usage, lowering the cost of air separation and gas procurement, and reducing energy consumption and overall operating costs by optimizing coal gasification conditions.

[0050] Furthermore, if the real-time carbon dioxide content at the outlet of the synthesis furnace is less than the set content, nitrogen is used as the transport carrier gas.

[0051] Specifically, maintaining the CO2 content in the carrier gas within a predetermined range can ensure the operational stability and safety of the gasifier. When the CO2 concentration is low, using nitrogen (N2) as the carrier gas can avoid instability in the coal gasification reaction due to excessively low CO2, reduce possible thermodynamic fluctuations during the coal gasification process, and ensure a continuous and stable supply of syngas.

[0052] This application also provides a system for reducing energy consumption, including:

[0053] An air separation device, used to separate nitrogen and oxygen;

[0054] The gasifier has its inlet connected to the outlet of the air separator to provide a combustion site for the pulverized coal.

[0055] Waste heat boiler, the inlet end of which is connected to the outlet end of the gasifier to absorb the heat generated by the gasifier during the combustion of pulverized coal.

[0056] The dust removal wet cleaning component has its inlet end connected to the outlet end of the waste heat boiler to absorb impurities in the syngas generated after the coal powder is burned in the gasifier.

[0057] The system also includes a membrane separation unit, which is located between the dust removal and wet scrubbing unit and the gasifier inlet. The membrane separation unit separates the carbon dioxide from the syngas as a carrier gas, which is then transported to the gasifier along with the pulverized coal.

[0058] The control valve is located on the pipeline between the membrane separation unit and the gasifier inlet to control the carbon dioxide content input to the gasifier based on the combustion status of the pulverized coal in the gasifier.

[0059] Specifically, using CO2 separated from syngas as a carrier gas can reduce the amount of nitrogen (N2) used in the air separator. Nitrogen production requires high energy consumption; by replacing part of the nitrogen, the energy consumption of the entire IGCC system is reduced, and energy utilization efficiency is improved. Furthermore, using CO2 as a carrier gas can promote the water-gas shift reaction in the coal gasification process. This improves the calorific value and composition of syngas, increases coal gasification efficiency, and reduces residual carbon loss. It also increases the available thermal energy, thereby improving the overall power generation efficiency. In addition, the amount of carbon dioxide gas entering the gasifier can be controlled in real time by controlling the valve according to the preset power generation, which allows the gasifier to operate under better conditions.

[0060] Furthermore, the membrane separation component is equipped with any one of a polymer membrane, a metal-organic framework, or a composite membrane to collect carbon dioxide from the syngas.

[0061] Specifically, polymer membranes, metal-organic frameworks, and composite membranes, due to their unique selectivity and permeability, can effectively separate carbon dioxide from syngas. Compared with traditional physical or chemical absorption methods, they have higher separation efficiency and lower energy consumption. At the same time, membrane separation does not involve the use of chemical solvents, reducing potential environmental pollution and the generation of chemical waste, making it more environmentally friendly.

[0062] Embodiments of this application also provide a computer-readable storage medium storing a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when run.

[0063] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0064] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0065] Embodiments of this application also provide a computer program product, including a computer program, wherein the computer program, when executed by a processor, performs the steps in any of the above method embodiments.

[0066] Embodiments of this application also provide another computer program product, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0067] Embodiments of this application also provide an electronic device including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0068] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0069] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0070] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of N computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or N modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0071] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0072] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0073] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0074] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0075] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for reducing energy consumption, characterized in that, include: Based on the preset power generation, the amount of pulverized coal input to the gasifier is determined, and the amount of inert gas input is determined based on the amount of pulverized coal. The inert gas is used as a carrier gas to transport the pulverized coal to the gasifier. The inert gas includes nitrogen or carbon dioxide, or a mixture of nitrogen and carbon dioxide. Based on the input amount of the inert gas, the first content of nitrogen separated by the air separator connected to the gasifier and the second content of carbon dioxide input into the gasifier are determined. The first content of nitrogen and the second content of carbon dioxide are used as the carrier gas to input the pulverized coal into the gasifier, so that the second content of carbon dioxide and the pulverized coal can react chemically in the gasifier to reduce energy consumption.

2. The method for reducing energy consumption according to claim 1, characterized in that, The step of determining the amount of pulverized coal input to the gasifier based on the preset power generation includes: The content of syngas produced by the gasifier corresponding to the preset power generation is determined according to the preset power generation, wherein the syngas includes nitrogen, carbon dioxide, and a mixture of the nitrogen and the carbon dioxide; The content of the pulverized coal input into the gasifier is determined based on the syngas content.

3. The method for reducing energy consumption according to claim 2, characterized in that, The method further includes: The real-time carbon dioxide content at the outlet of the synthesis furnace is detected. If the real-time carbon dioxide content at the outlet of the synthesis furnace is greater than or equal to a set content, the carbon dioxide at the outlet of the synthesis furnace is controlled to be used as the transport carrier gas, and the pulverized coal is transported into the synthesis furnace from the carbon dioxide at the outlet of the synthesis furnace at the second content.

4. The method for reducing energy consumption according to claim 3, characterized in that, When the real-time carbon dioxide content at the outlet of the synthesis furnace is determined to be less than the set content, nitrogen is used as the transport carrier gas.

5. A system for reducing energy consumption, characterized in that, The system includes: An air separation device for separating nitrogen and oxygen; A gasifier, the inlet of which is connected to the outlet of the air separator, to provide a combustion site for pulverized coal; A waste heat boiler, wherein the inlet end of the waste heat boiler is connected to the outlet end of the gasifier to absorb the heat generated by the gasifier during the combustion of pulverized coal. A dust removal wet cleaning component, the inlet end of which is connected to the outlet end of the waste heat boiler, to absorb impurities in the syngas generated after the coal powder is burned in the gasifier; The system further includes a membrane separation component, which is located between the dust removal and wet scrubbing component and the gasifier inlet, to use the carbon dioxide separated from the syngas by the membrane separation component as a carrier gas to be transported together with the pulverized coal into the gasifier.

6. The energy-saving system according to claim 5, characterized in that, The system also includes: A control valve is provided on the pipeline between the membrane separation unit and the gasifier inlet to control the carbon dioxide content input to the gasifier according to the combustion status of pulverized coal in the gasifier.

7. The energy-reducing system according to claim 5, characterized in that, The membrane separation component is equipped with any one of a polymer membrane, a metal-organic framework, or a composite membrane to collect the carbon dioxide in the synthesis gas.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein the program, when executed, performs the method of any one of claims 1 to 4.

9. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to execute the method of any one of claims 1 to 4 through the computer program.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 4.

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