Compressed air energy storage coupled organic solid waste baking synergistic interaction system

Abstract

The invention belongs to the technical field of energy storage, and particularly relates to a compressed air energy storage coupled organic solid waste baking synergistic interaction system which comprises a compressed air energy storage subsystem and an organic solid waste treatment subsystem. The compressed air energy storage subsystem comprises an air compression unit, an air storage and an expansion machine unit which are sequentially connected in series; the expansion machine unit comprises a first gas pipeline and at least one group of expansion machine components mounted on the first gas pipeline; the organic solid waste treatment subsystem comprises an organic solid waste baking furnace, a heat storage tank, a cold storage tank, a first gas conveying pipe arranged between the organic solid waste baking furnace and the heat storage tank, a first sub-pipeline arranged between the heat storage tank and the cold storage tank, and a second sub-pipeline arranged between the cold storage tank and the organic solid waste baking furnace; the heat exchange tube is arranged in the organic solid waste baking furnace; the two ends of the heat exchange pipe are connected with the first air conveying pipe and the second sub-pipeline correspondingly, the first sub-pipeline is used for exchanging heat with the expansion machine assembly, and the second sub-pipeline is used for exchanging heat with the air compression unit.

Description

Technical Field

[0001] The present invention belongs to the field of energy storage technology, and specifically relates to a compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system. Background Art

[0002] With the continuous development of the economy and society, energy and environmental issues are becoming increasingly serious. On the one hand, energy consumption is constantly increasing, and the need to absorb the highly volatile new energy sources has brought about a huge demand for energy storage. As a new large-scale energy storage technology, compressed air energy storage is of great significance for optimizing energy structure and regulating grid operation.

[0003] The existing compressed air energy storage system needs to use a heat exchanger in front of the expander equipment to heat the 40-50℃ compressed air from the gas storage to increase the temperature and pressure; because the higher the temperature and pressure of the compressed air, the higher the energy of the compressed air, and the stronger its ability to drive the expander to generate power; relevant research has found that by introducing sunlight as an external heat source to heat the compressed air, when the inlet temperature of the expander is increased from 180℃ to 230℃, the energy storage efficiency is improved by 5.6%, and the energy storage efficiency is significantly improved with the increase of the inlet temperature; at the same time, the existing compressed air energy storage system also needs to cool the compressed air during the compression process (because a lot of heat is generated during the air compression process, if the compressed air is not cooled, it will cause the air compressor and gas storage to overheat). Due to the above factors, existing compressed air energy storage systems usually need to be specially equipped with cooling devices and heating devices (such as the aforementioned introduction of sunlight as an external heat source to heat the compressed air) to cool the compressed air prepared by the air compressor and heat the compressed air entering the expander. However, under such a configuration, not only can the heat energy generated during the air compression process not be utilized, but additional cooling energy is also required to offset the generated heat energy, resulting in low energy utilization and low energy input-output ratio. In addition, the use of sunlight as an external heat source to heat the compressed air entering the expander also has the problem of poor stability.

[0004] On the other hand, with the increasing problem of organic solid waste disposal brought about by economic and social development, in the existing technology, a large amount of energy is usually required to convert organic solid waste raw materials into carbon products and combustible gases, which has the problem of high energy consumption. Summary of the Invention

[0005] In order to solve the defects of the above-mentioned prior art, the present invention provides a compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system to solve the technical problems of low energy utilization, low energy input-output ratio, and poor stability of heating the compressed air entering the expander in the existing compressed air energy storage system, as well as the technical problem of high energy consumption in the existing organic solid waste treatment system.

[0006] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: a compressed air energy storage coupled with organic solid waste baking synergistic efficiency system, comprising: a compressed air energy storage subsystem and an organic solid waste treatment subsystem; The compressed air energy storage subsystem includes an air compression unit, an air storage reservoir and an expander unit; The air compression unit is used to prepare compressed air and transport the prepared compressed air to the air storage; The gas storage is used to deliver the stored compressed air to the expander unit; The expander unit includes a first gas pipeline and at least one set of expander assemblies mounted on the first gas pipeline; The organic solid waste treatment subsystem includes a second gas pipeline, and an organic solid waste baking furnace, a heat storage tank and a cold storage tank installed in sequence on the second gas pipeline; the second gas pipeline includes a first gas transmission pipe arranged between the organic solid waste baking furnace and the heat storage tank, a first sub-pipeline arranged between the heat storage tank and the cold storage tank, a second sub-pipeline arranged between the cold storage tank and the organic solid waste baking furnace, and a heat exchange pipe arranged in the organic solid waste baking furnace; one end of the heat exchange pipe is connected to one end of the first gas transmission pipe, and the other end of the heat exchange pipe is connected to one end of the second sub-pipeline; the first sub-pipeline is used to exchange heat with the expander assembly to heat the compressed air delivered to the expander assembly; the second sub-pipeline is used to exchange heat with the air compression unit to cool the compressed air prepared by the air compression unit.

[0007] The heat generated when the air compression unit prepares compressed air is used to heat the gas in the second sub-pipeline, and the compressed air prepared by the air compression unit is cooled at the same time; the high-temperature gas heated in the second sub-pipeline is then transported to the heat exchange pipe to pre-treat the organic solid waste raw materials in the organic solid waste baking furnace, thereby increasing the energy density and volume density of the organic solid waste raw materials and obtaining charcoal products and combustible gas; the high-temperature gas in the heat exchange pipe is transported to the heat storage pipe for storage through the first gas transmission pipe, thereby recovering and storing the residual heat after baking. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency system provided by the present invention can utilize the heat generated when the air compression unit prepares compressed air to convert organic solid waste raw materials into charcoal products and combustible gas without the need to invest a large amount of additional energy for the conversion. While cooling the compressed air prepared by the air compression unit, saving the input of cold energy, improving energy utilization and energy input-output ratio, it also solves the technical problem of high energy consumption in existing organic solid waste treatment systems.

[0008] In the process of the first sub-pipeline transporting the high-temperature gas stored in the heat storage tube to the cold storage tank, the heat exchange between the first sub-pipeline and the expander assembly is utilized to enable the high-temperature gas in the first sub-pipeline to stably heat the compressed air transported to the expander assembly, thereby solving the technical problem of poor stability in heating the compressed air entering the expander in existing compressed air energy storage systems.

[0009] The low-temperature gas after heat exchange is transported to the cold storage tank for storage through the first sub-pipeline, and then the low-temperature gas in the cold storage tank is transported to the second sub-pipeline for heat exchange with the air compression unit, cooling the compressed air prepared by the air compression unit, and completing an air circuit cycle in the organic solid waste treatment subsystem. By repeating the above cycle, the compression heat of the compressed air generated by the compressed air energy storage subsystem can be fully recovered and utilized, and organic solid waste can be thermochemically utilized to produce carbon products and combustible gases. It also serves as an energy source for heating the compressed air entering the expander, thereby improving the overall economic efficiency. While reducing the overall exergy loss, it achieves the cogeneration of carbon and electricity. It solves the technical problems of low energy utilization, low energy input-output ratio, and poor stability of heating the compressed air entering the expander in the existing compressed air energy storage system, as well as the technical problem of high energy consumption in the existing organic solid waste treatment system.

[0010] Furthermore, the air compression unit includes a third gas pipeline and at least one group of air compressor components installed on the third gas pipeline; the third gas pipeline is used to transport the compressed air prepared by the air compressor assembly to the gas storage reservoir, and the second sub-pipeline is used to exchange heat with the air compressor assembly to cool the compressed air prepared by the air compressor assembly.

[0011] Furthermore, a set of the air compressor assembly is installed on the third gas pipeline, and the air compressor assembly includes a first drive motor, a first air compressor and a first air compressor heat exchanger; One end of the third gas pipeline is connected to the first air compressor, and the other end of the third gas pipeline is connected to the gas storage reservoir. The first drive motor is used to drive the first air compressor to operate, and the first air compressor heat exchanger is installed between the third gas pipeline and the second sub-pipeline.

[0012] In another embodiment, a plurality of air compressor assemblies are sequentially connected in series on the third gas pipeline; the air compressor assembly includes a second drive motor, and a second air compressor and a second air compressor heat exchanger sequentially installed on the third gas pipeline; the second drive motor is used to drive the second air compressor to operate; One end of the third gas pipeline is connected to the gas storage reservoir, and each of the second air compressor heat exchangers is installed between the third gas pipeline and the second sub-pipeline.

[0013] In another technical solution, the third gas pipeline includes a plurality of third sub-pipelines arranged in parallel; each of the third sub-pipelines is equipped with a set of the air compressor assembly, the air compressor assembly including a third drive motor, a third air compressor and a third air compressor heat exchanger; A third air compressor is installed at one end of each of the third sub-pipelines, and the other end of each of the third sub-pipelines is connected to the gas storage reservoir. The third drive motor is used to drive the third air compressor to operate, and the third air compressor heat exchanger is installed between the third sub-pipeline and the second sub-pipeline.

[0014] Furthermore, a set of the expander assembly is installed on the first gas pipeline, and the expander assembly includes a first expander and a first expander heat exchanger; One end of the first gas pipeline is connected to the gas storage, the other end of the first gas pipeline is connected to the first expander, and the first expander heat exchanger is installed between the first gas pipeline and the first sub-pipeline.

[0015] Furthermore, the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system also includes a first generator motor; the first expander is used to drive the first generator motor to generate electricity.

[0016] In another technical solution, a plurality of expander assemblies are sequentially connected in series on the first gas pipeline, and the expander assembly includes a second expander heat exchanger and a second expander sequentially installed on the first gas pipeline; One end of the first gas pipeline is connected to the gas storage reservoir, and each of the second expander heat exchangers is installed between the first gas pipeline and the first sub-pipeline.

[0017] Furthermore, the compressed air energy storage coupled with organic solid waste baking synergistic efficiency system further includes at least one second generator motor, and the second expander is used to drive the second generator motor to generate electricity; Each of the second expanders is connected to one of the second generator motors, and the second generator motor is connected to at least one of the second expanders.

[0018] In another technical solution, the first gas pipeline includes a plurality of fourth sub-pipelines arranged in parallel; each of the fourth sub-pipelines is equipped with a set of the expander assemblies, each of which includes a third expander and a third expander heat exchanger; One end of each of the fourth sub-pipelines is equipped with a third expander, the other end of each of the fourth sub-pipelines is connected to the gas storage, and the third expander heat exchanger is installed between the fourth sub-pipeline and the first sub-pipeline.

[0019] Furthermore, the compressed air energy storage coupled with organic solid waste baking synergistic efficiency system further includes at least one third generator motor, and the third expander is used to drive the third generator motor to generate electricity; Each of the third expanders is connected to one of the third generator motors, and the third generator motor is connected to at least one of the third expanders.

[0020] Furthermore, the compressed air energy storage coupled with organic solid waste baking synergistic efficiency system further includes a second gas transmission pipe, a purifier and a burner; the first sub-pipeline includes a connecting section and a heat exchange section sequentially arranged in the direction from the heat storage tank to the cold storage tank; One end of the second gas pipe is connected to the organic solid waste baking furnace, and the other end of the second gas pipe is connected to the connecting section; the purifier and the burner are sequentially installed on the second gas pipe along the direction from the organic solid waste baking furnace to the connecting section; The heat exchange section is used to exchange heat with the expander assembly to heat the compressed air delivered to the expander assembly.

[0021] By setting up the second gas transmission pipe, purifier and burner, the combustible gas obtained by converting the organic solid waste raw materials can be first purified by the purification dust collector and then sent to the combustion chamber for combustion. The high-temperature gas generated after combustion is then sent to the connecting section to be mixed and heated with the gas in the connecting section. The heated gas is then sent to the heat exchange section to heat the compressed air entering the expander, thereby fully recycling and utilizing the combustible gas obtained by converting the organic solid waste raw materials, further improving the heating effect of the compressed air sent to the heat exchange section and entering the expander, and improving the ability of the expander to perform work and generate electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is a schematic structural diagram of the synergistic efficiency enhancement system of compressed air energy storage coupled with organic solid waste baking in Example 1; Among them, 1-gas storage, 2-first gas pipeline, 3-organic solid waste baking furnace, 4-heat storage tank, 5-cold storage tank, 6-first gas pipeline, 7-first sub-pipeline, 8-second sub-pipeline, 9-heat exchange pipe, 10-third gas pipeline, 11-first drive motor, 12-first air compressor, 13-first air compressor heat exchanger, 14-first expander, 15-first expander heat exchanger, 16-first generator motor, 17-second gas pipeline, 18-purifier, 19-burner. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0025] like Figure 1 As shown, this embodiment 1 provides a compressed air energy storage coupled with organic solid waste baking synergistic efficiency system, including: a compressed air energy storage subsystem and an organic solid waste treatment subsystem; The compressed air energy storage subsystem includes an air compression unit, an air storage reservoir 1 and an expander unit; The air compression unit is used to prepare compressed air and transport the prepared compressed air to the gas storage reservoir 1; The gas storage reservoir 1 is used to deliver the stored compressed air to the expander unit; The expander unit includes a first gas pipeline 2 and at least one set of expander components installed on the first gas pipeline 2; The organic solid waste treatment subsystem includes a second gas pipeline, and an organic solid waste baking furnace 3, a heat storage tank 4 and a cold storage tank 5 installed on the second gas pipeline in sequence; the second gas pipeline includes a first gas pipeline 6 arranged between the organic solid waste baking furnace 3 and the heat storage tank 4, a first sub-pipeline 7 arranged between the heat storage tank 4 and the cold storage tank 5, a second sub-pipeline 8 arranged between the cold storage tank 5 and the organic solid waste baking furnace 3, and a heat exchange pipe 9 arranged in the organic solid waste baking furnace 3; one end of the heat exchange pipe 9 is connected to one end of the first gas pipeline 6, and the other end of the heat exchange pipe 9 is connected to one end of the second sub-pipeline 8; the first sub-pipeline 7 is used to exchange heat with the expander assembly to heat the compressed air delivered to the expander assembly; the second sub-pipeline 8 is used to exchange heat with the air compression unit to cool the compressed air prepared by the air compression unit.

[0026] The heat generated when the air compression unit prepares compressed air is used to heat the gas in the second sub-pipeline 8, and the compressed air prepared by the air compression unit is cooled at the same time; the high-temperature gas heated in the second sub-pipeline 8 is then transported to the heat exchange pipe 9 to pre-treat the organic solid waste raw materials in the organic solid waste baking furnace 3 by baking, thereby increasing the energy density and volume density of the organic solid waste raw materials and obtaining charcoal products and combustible gas; the high-temperature gas in the heat exchange pipe 9 is transported to the heat storage pipe for storage through the first gas transmission pipe 6, thereby realizing the recovery and storage of the residual heat after baking. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency system provided by the present invention can utilize the heat generated when the air compression unit prepares compressed air to convert the organic solid waste raw materials into charcoal products and combustible gas without the need to invest a large amount of additional energy for the conversion. While cooling the compressed air prepared by the air compression unit, saving the input of cold energy, improving the energy utilization rate and energy input-output ratio, it also solves the technical problem of high energy consumption in the existing organic solid waste treatment system.

[0027] In the process of the first sub-pipeline 7 transporting the high-temperature gas stored in the heat storage tube to the cold storage tank 5, the heat exchange between the first sub-pipeline 7 and the expander assembly is utilized to enable the high-temperature gas in the first sub-pipeline 7 to stably heat the compressed air transported to the expander assembly, thereby solving the technical problem of poor stability in heating the compressed air entering the expander in the existing compressed air energy storage system.

[0028] The low-temperature gas after heat exchange is transported to the cold storage tank 5 for storage through the first sub-pipeline 7. The low-temperature gas in the cold storage tank 5 is then transported to the second sub-pipeline 8 for heat exchange with the air compression unit, cooling the compressed air prepared by the air compression unit, and completing an air circuit in the organic solid waste treatment subsystem. By repeating the above cycle, the compression heat of the compressed air generated by the compressed air energy storage subsystem can be fully recovered and utilized, and the organic solid waste can be thermochemically utilized to produce carbon products and combustible gases. This energy source is also used to heat the compressed air entering the expander, thereby improving overall economic efficiency. While reducing overall exergy losses, it also achieves the cogeneration of carbon and electricity. This solves the technical problems of low energy utilization, low energy input-output ratio, and poor stability of heating the compressed air entering the expander in existing compressed air energy storage systems, as well as the technical problem of high energy consumption in existing organic solid waste treatment systems.

[0029] In one embodiment, Figure 1 As shown, the air compression unit includes a third gas pipeline 10 and at least one set of air compressor components installed on the third gas pipeline 10; the third gas pipeline 10 is used to transport the compressed air prepared by the air compressor component to the gas storage reservoir 1, and the second sub-pipeline 8 is used to exchange heat with the air compressor component to cool the compressed air prepared by the air compressor component.

[0030] Specifically, in this embodiment 1, Figure 1 As shown, a set of air compressor components is installed on the third gas pipeline 10, and the air compressor components include a first drive motor 11, a first air compressor 12 and a first air compressor heat exchanger 13; One end of the third gas pipeline 10 is connected to the first air compressor 12, and the other end of the third gas pipeline 10 is connected to the gas storage reservoir 1. The first drive motor 11 is used to drive the first air compressor 12 to operate, and the first air compressor heat exchanger 13 is installed between the third gas pipeline 10 and the second sub-pipeline 8.

[0031] Specifically, in this embodiment 1, Figure 1 As shown, a set of expander assemblies is installed on the first gas pipeline 2, and the expander assembly includes a first expander 14 and a first expander heat exchanger 15; One end of the first gas pipeline 2 is connected to the gas storage 1 , and the other end of the first gas pipeline 2 is connected to the first expander 14 . The first expander heat exchanger 15 is installed between the first gas pipeline 2 and the first sub-pipeline 7 .

[0032] Specifically, in this embodiment 1, Figure 1 As shown, the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system also includes a first generator motor 16; the first expander 14 is used to drive the first generator motor 16 to generate electricity.

[0033] Preferably, in this embodiment 1, Figure 1 As shown, the compressed air energy storage coupled with organic solid waste baking synergistic efficiency system further includes a second gas pipeline 17, a purifier 18 and a burner 19; the first sub-pipeline 7 includes a connecting section and a heat exchange section sequentially arranged along the direction from the heat storage tank 4 to the cold storage tank 5; One end of the second gas pipe 17 is connected to the organic solid waste baking furnace 3, and the other end of the second gas pipe 17 is connected to the connecting section; the purifier 18 and the burner 19 are installed on the second gas pipe 17 in sequence along the direction from the organic solid waste baking furnace 3 to the connecting section; The heat exchange section is used to exchange heat with the expander assembly to heat the compressed air delivered to the expander assembly.

[0034] By setting up a second gas pipeline 17, a purifier 18 and a burner 19, the combustible gas obtained by converting the organic solid waste raw materials can be first purified by a purification dust collector and then sent to the combustion chamber for combustion. The high-temperature gas generated after combustion is then sent to the connecting section to be mixed and heated with the gas in the connecting section. The heated gas is then sent to the heat exchange section to heat the compressed air entering the expander, thereby fully recycling and utilizing the combustible gas obtained by converting the organic solid waste raw materials, further improving the heating effect of the compressed air sent to the heat exchange section and entering the expander, and improving the ability of the expander to perform work and generate electricity. Example

[0035] Based on the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system provided in Example 1, Example 2 provides a compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system. In this Example 2, the structure of the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system is basically the same as that in Example 1, with only differences in the settings of the third gas pipeline and the air compressor assembly.

[0036] Specifically, in this embodiment 2, multiple air compressor assemblies are sequentially connected in series on the third gas pipeline; the air compressor assembly includes a second drive motor, and a second air compressor and a second air compressor heat exchanger sequentially installed on the third gas pipeline; the second drive motor is used to drive the second air compressor to operate; One end of the third gas pipeline is connected to the gas storage reservoir 1 , and each second air compressor heat exchanger is installed between the third gas pipeline and the second sub-pipeline 8 . Example

[0037] Based on the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system provided in Example 1, Example 3 provides a compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system. In this Example 3, the structure of the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system is basically the same as that in Example 1, with only differences in the settings of the third gas pipeline and the air compressor assembly.

[0038] Specifically, in this embodiment 3, the third gas pipeline includes a plurality of third sub-pipelines arranged in parallel; each third sub-pipeline is equipped with an air compressor assembly, and the air compressor assembly includes a third drive motor, a third air compressor, and a third air compressor heat exchanger; A third air compressor is installed at one end of each third sub-pipeline, and the other end of each third sub-pipeline is connected to the gas storage reservoir 1. The third drive motor is used to drive the third air compressor to operate, and the third air compressor heat exchanger is installed between the third sub-pipeline and the second sub-pipeline 8. Example

[0039] Based on the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system provided in Example 1, Example 4 provides a compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system. In this Example 4, the structure of the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system is basically the same as that in Example 1, with only differences in the settings of the first gas pipeline and the expander assembly.

[0040] Specifically, in this embodiment 4, a plurality of expander assemblies are sequentially connected in series on the first gas pipeline 2, and the expander assembly includes a second expander heat exchanger and a second expander sequentially installed on the first gas pipeline 2; One end of the first gas pipeline 2 is connected to the gas storage 1 , and each second expander heat exchanger is installed between the first gas pipeline 2 and the first sub-pipeline 7 .

[0041] Preferably, in this embodiment 4, the compressed air energy storage coupled with organic solid waste roasting synergistic efficiency system further includes at least one second generator motor, and the second expander is used to drive the second generator motor to generate electricity; Each second expander is connected to one of the second generator motors, and the second generator motor is connected to at least one second expander. Example

[0042] Based on the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system provided in Example 1, Example 5 provides a compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system. In this Example 5, the structure of the compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system is basically the same as that in Example 1, with only differences in the settings of the first gas pipeline and the expander assembly.

[0043] Specifically, in this embodiment 5, the first gas pipeline 2 includes a plurality of fourth sub-pipelines arranged in parallel; each fourth sub-pipeline is equipped with a set of expander assemblies, and the expander assembly includes a third expander and a third expander heat exchanger; A third expander is installed at one end of each fourth sub-pipeline, and the other end of each fourth sub-pipeline is connected to the gas storage reservoir 1. The third expander heat exchanger is installed between the fourth sub-pipeline and the first sub-pipeline 7.

[0044] Preferably, in this embodiment 5, the compressed air energy storage coupled with organic solid waste roasting synergistic efficiency system further includes at least one third generator motor, and the third expander is used to drive the third generator motor to generate electricity; Each third expander is connected to one of the third generator motors, and the third generator motor is connected to at least one third expander.

[0045] The synergistic efficiency enhancement system of compressed air energy storage coupled with organic solid waste baking provided by the present invention has at least the following technical effects or advantages: 1. The heat generated when the air compression unit prepares compressed air is used to heat the gas in the second sub-pipeline 8, and the compressed air prepared by the air compression unit is cooled at the same time; the high-temperature gas heated in the second sub-pipeline 8 is then transported to the heat exchange pipe 9 to pre-treat the organic solid waste raw materials in the organic solid waste baking furnace 3 to improve the energy density and volume density of the organic solid waste raw materials, and obtain charcoal products and combustible gas; the high-temperature gas in the heat exchange pipe 9 is transported to the heat storage pipe for storage through the first gas transmission pipe 6, so as to realize the recovery and storage of the residual heat after baking. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency system provided by the present invention can utilize the heat generated when the air compression unit prepares compressed air to convert the organic solid waste raw materials into charcoal products and combustible gas, without the need to invest a large amount of additional energy for the conversion. While cooling the compressed air prepared by the air compression unit, saving the input of cold energy, improving the energy utilization rate and energy input-output ratio, it also solves the technical problem of high energy consumption in the existing organic solid waste treatment system.

[0046] 2. During the process of the first sub-pipeline 7 transporting the high-temperature gas stored in the heat storage tube to the cold storage tank 5, the heat exchange between the first sub-pipeline 7 and the expander assembly is utilized to enable the high-temperature gas in the first sub-pipeline 7 to stably heat the compressed air transported to the expander assembly, thereby solving the technical problem of poor stability in heating the compressed air entering the expander in existing compressed air energy storage systems.

[0047] 3. The low-temperature gas after heat exchange is transported to the cold storage tank 5 for storage through the first sub-pipeline 7. The low-temperature gas in the cold storage tank 5 is then transported to the second sub-pipeline 8 for heat exchange with the air compression unit, cooling the compressed air prepared by the air compression unit, and completing an air cycle in the organic solid waste treatment subsystem. By repeating the above cycle, the compression heat of the compressed air generated by the compressed air energy storage subsystem can be fully recovered and utilized, and organic solid waste can be thermochemically utilized to produce carbon products and combustible gases. It also serves as an energy source for heating the compressed air entering the expander, improving overall economic efficiency. While reducing overall exergy loss, it achieves the cogeneration of carbon and electricity. It solves the technical problems of low energy utilization, low energy input-output ratio, poor stability of heating the compressed air entering the expander, and high energy consumption in existing organic solid waste treatment systems.

[0048] 4. By setting up a second gas pipeline 17, a purifier 18 and a burner 19, the combustible gas obtained by converting the organic solid waste raw materials can be first purified by the purification dust collector and then sent to the combustion chamber for combustion. The high-temperature gas generated after combustion is then sent to the connecting section to be mixed and heated with the gas in the connecting section. The heated gas is then sent to the heat exchange section to heat the compressed air entering the expander, thereby fully recycling and utilizing the combustible gas obtained by converting the organic solid waste raw materials, further improving the heating effect of the compressed air sent to the heat exchange section and entering the expander, and improving the ability of the expander to generate work and electricity.

[0049] The above are only specific application examples of the present invention and do not constitute any limitation to the protection scope of the present invention. Any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. A synergistic efficiency enhancement system for compressed air energy storage coupled with organic solid waste baking, characterized in that: include: Compressed air energy storage subsystem and organic solid waste treatment subsystem; The compressed air energy storage subsystem includes an air compression unit, an air storage reservoir and an expander unit; The air compression unit is used to prepare compressed air and transport the prepared compressed air to the air storage; The gas storage is used to deliver the stored compressed air to the expander unit; The expander unit includes a first gas pipeline and at least one set of expander assemblies mounted on the first gas pipeline; The organic solid waste treatment subsystem includes a second gas pipeline, and an organic solid waste baking furnace, a heat storage tank and a cold storage tank installed in sequence on the second gas pipeline; the second gas pipeline includes a first gas transmission pipe arranged between the organic solid waste baking furnace and the heat storage tank, a first sub-pipeline arranged between the heat storage tank and the cold storage tank, a second sub-pipeline arranged between the cold storage tank and the organic solid waste baking furnace, and a heat exchange pipe arranged in the organic solid waste baking furnace; one end of the heat exchange pipe is connected to one end of the first gas transmission pipe, and the other end of the heat exchange pipe is connected to one end of the second sub-pipeline; the first sub-pipeline is used to exchange heat with the expander assembly to heat the compressed air delivered to the expander assembly; the second sub-pipeline is used to exchange heat with the air compression unit to cool the compressed air prepared by the air compression unit.

2. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system according to claim 1 is characterized by: The air compression unit includes a third gas pipeline and at least one group of air compressor components installed on the third gas pipeline; the third gas pipeline is used to transport the compressed air prepared by the air compressor component to the gas storage reservoir, and the second sub-pipeline is used to exchange heat with the air compressor component to cool the compressed air prepared by the air compressor assembly.

3. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system according to claim 2 is characterized by: A set of the air compressor assembly is installed on the third gas pipeline, and the air compressor assembly includes a first drive motor, a first air compressor and a first air compressor heat exchanger; One end of the third gas pipeline is connected to the first air compressor, and the other end of the third gas pipeline is connected to the gas storage reservoir. The first drive motor is used to drive the first air compressor to operate, and the first air compressor heat exchanger is installed between the third gas pipeline and the second sub-pipeline.

4. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system according to claim 2 is characterized by: The third gas pipeline is connected in series with multiple groups of the air compressor assemblies; the air compressor assembly includes a second drive motor, and a second air compressor and a second air compressor heat exchanger sequentially installed on the third gas pipeline; the second drive motor is used to drive the second air compressor to operate; One end of the third gas pipeline is connected to the gas storage reservoir, and each of the second air compressor heat exchangers is installed between the third gas pipeline and the second sub-pipeline.

5. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system according to claim 2 is characterized by: The third gas pipeline includes a plurality of third sub-pipelines arranged in parallel; each of the third sub-pipelines is equipped with a set of the air compressor assembly, which includes a third drive motor, a third air compressor and a third air compressor heat exchanger; A third air compressor is installed at one end of each of the third sub-pipelines, and the other end of each of the third sub-pipelines is connected to the gas storage reservoir. The third drive motor is used to drive the third air compressor to operate, and the third air compressor heat exchanger is installed between the third sub-pipeline and the second sub-pipeline.

6. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system according to claim 1 is characterized by: A set of expander assemblies is installed on the first gas pipeline, and the expander assembly includes a first expander and a first expander heat exchanger; One end of the first gas pipeline is connected to the gas storage, the other end of the first gas pipeline is connected to the first expander, and the first expander heat exchanger is installed between the first gas pipeline and the first sub-pipeline.

7. The compressed air energy storage coupled with organic solid waste roasting synergistic efficiency enhancement system according to claim 6 is characterized by: It also includes a first generator motor; the first expander is used to drive the first generator motor to generate electricity.

8. The compressed air energy storage coupled with organic solid waste baking synergistic efficiency enhancement system according to claim 1 is characterized by: A plurality of expander assemblies are sequentially connected in series on the first gas pipeline, wherein the expander assembly includes a second expander heat exchanger and a second expander sequentially installed on the first gas pipeline; One end of the first gas pipeline is connected to the gas storage reservoir, and each of the second expander heat exchangers is installed between the first gas pipeline and the first sub-pipeline.

9. The compressed air energy storage coupled with organic solid waste roasting synergistic efficiency enhancement system according to claim 8, characterized in that: It also includes at least one second generator motor, wherein the second expander is used to drive the second generator motor to generate electricity; Each of the second expanders is connected to one of the second generator motors, and the second generator motor is connected to at least one of the second expanders.

10. The compressed air energy storage coupled with organic solid waste roasting synergistic efficiency enhancement system according to claim 1 is characterized by: The first gas pipeline includes a plurality of fourth sub-pipelines arranged in parallel; each of the fourth sub-pipelines is equipped with a set of the expander assemblies, each of which includes a third expander and a third expander heat exchanger; One end of each of the fourth sub-pipelines is equipped with a third expander, the other end of each of the fourth sub-pipelines is connected to the gas storage, and the third expander heat exchanger is installed between the fourth sub-pipeline and the first sub-pipeline.

11. The synergistic efficiency enhancement system of compressed air energy storage coupled with organic solid waste roasting according to claim 10 is characterized in that: It also includes at least one third generator motor, wherein the third expander is used to drive the third generator motor to generate electricity; Each of the third expanders is connected to one of the third generator motors, and the third generator motor is connected to at least one of the third expanders.

12. The synergistic efficiency enhancement system of compressed air energy storage coupled with organic solid waste roasting according to claim 1, characterized in that: It also includes a second gas pipeline, a purifier and a burner; the first sub-pipeline includes a connecting section and a heat exchange section arranged in sequence along the direction from the heat storage tank to the cold storage tank; One end of the second gas pipe is connected to the organic solid waste baking furnace, and the other end of the second gas pipe is connected to the connecting section; the purifier and the burner are sequentially installed on the second gas pipe along the direction from the organic solid waste baking furnace to the connecting section; The heat exchange section is used to exchange heat with the expander assembly to heat the compressed air delivered to the expander assembly.

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