Zero-carbon gas combustion system

Abstract

This invention provides a zero-carbon gas combustion system, relating to the field of power environmental protection technology. The system includes: a burner having a combustion chamber, a combustion inlet, and a combustion outlet; a combustion seat assembly disposed at the combustion inlet for supplying gas and auxiliary gas to the combustion chamber; a protection pipe having a protection gas inlet and multiple protection gas outlets disposed on the pipe wall, the protection pipe being fitted against the inner wall of the combustion chamber, and protection gas being ejected from the multiple protection gas outlets to form a protective gas wall isolating between the combustion seat assembly and the inner wall of the combustion chamber; a gas supply device supplying gas to the combustion chamber through the combustion seat assembly; an auxiliary gas supply device supplying auxiliary gas to the combustion chamber through the combustion seat assembly; and a protection gas supply device supplying protection gas to the combustion chamber through the protection pipe. This system solves the problem in existing technologies where the high-temperature, high-pressure gas generated during combustion in the combustion chamber directly heats the inner wall of the combustion chamber, leading to a shortened burner lifespan.

Description

Technical Field

[0001] This invention relates to the field of power environmental protection technology, specifically to a zero-carbon gas combustion system. Background Technology

[0002] In recent years, the energy transition has been continuously advancing, making the reduction of carbon emissions imperative. The gas turbine power generation industry is also facing pressure to reduce carbon emissions. Improving gas turbine efficiency can be achieved by increasing combustion chamber temperature and pressure. Oxygen-enriched combustion can generate higher temperatures, thus improving gas turbine efficiency. However, currently available combustion chambers are difficult to operate for extended periods under ultra-high temperature and pressure conditions. The extremely high temperatures generated during oxygen-enriched combustion, which continuously scorch the inner walls of the combustion chamber, significantly impact its lifespan and increase the difficulty of controlling the flame shape, posing a safety hazard. Therefore, there is an urgent need for a device capable of stable combustion under prolonged oxygen-enriched conditions to address at least one of these problems. Summary of the Invention

[0003] The purpose of this invention is to provide a zero-carbon gas combustion system to solve the problem in the prior art where the high-temperature and high-pressure gas generated during combustion in the combustion chamber directly heats the inner wall of the combustion chamber, leading to a shortened combustion chamber life.

[0004] To achieve the above objectives, the present invention provides a zero-carbon gas combustion system, the zero-carbon gas combustion system comprising: A burner has a combustion chamber, a combustion inlet, and a combustion outlet, wherein fuel gas and auxiliary fuel gas are burned in the combustion chamber, and the resulting exhaust gas is discharged from the combustion outlet. A combustion chamber assembly is disposed at the combustion inlet inside the burner, and the combustion chamber assembly is used to supply fuel gas and auxiliary fuel gas into the combustion chamber. A protective pipe has a protective gas inlet and multiple protective gas outlets. The multiple protective gas outlets are disposed on the pipe wall of the protective pipe. The protective pipe is disposed at the combustion inlet in conjunction with the inner wall of the combustion chamber. Protective gas enters the protective pipe through the protective gas inlet and is ejected from the multiple protective gas outlets to form a protective gas wall that isolates the combustion seat assembly and the inner wall of the combustion chamber. A gas supply device is connected to the gas supply inlet of the combustion seat assembly via a pipeline, and the gas supply device supplies gas to the combustion chamber through the combustion seat assembly; A combustion-supporting gas supply device is connected to the combustion-supporting gas supply inlet of the combustion seat assembly via a pipeline, and the combustion-supporting gas supply device supplies combustion-supporting gas to the combustion chamber through the combustion seat assembly; A protective gas supply device is connected to the protective gas inlet of the protective pipeline, and the protective gas supply device supplies protective gas to the combustion chamber through the protective pipeline.

[0005] Specifically, the zero-carbon gas combustion system further includes a cooling and filtering device, which is connected to the combustion outlet of the burner and the protective gas supply device, for cooling and filtering the exhaust gas discharged from the combustion outlet, and sending the cooled and filtered exhaust gas as protective gas into the protective gas supply device for storage.

[0006] Specifically, the cooling and filtration device includes: a cooler and an adsorber; The cooler is used to cool the exhaust gas and absorb and utilize the waste heat in the exhaust gas. The adsorber is used to filter sulfur dioxide, nitrogen oxides and fly ash particles in the cooled exhaust gas. The exhaust gas is discharged from the combustion outlet of the burner, passes through the cooler and the adsorber in sequence, and is then sent to the protective gas supply device for storage as protective gas.

[0007] Specifically, the zero-carbon gas combustion system further includes a compressor, which is disposed between the protective gas supply device and the adsorber, and the compressor is used to pressurize the protective gas supplied to the protective gas supply device.

[0008] Specifically, the protective gas supply device includes: a buffer tank and a gas storage cylinder that are interconnected; The gas cylinder is used to store protective gas; The buffer tank is connected to the compressor and is used to store the pressurized protective gas.

[0009] Specifically, the protective gas is carbon dioxide.

[0010] Specifically, the combustion chamber assembly includes: a central combustion chamber and an annular combustion disc; The combustion plate has a gas chamber, a gas inlet, and multiple gas outlets. The gas inlet serves as the gas supply inlet for the combustion seat assembly. The gas inlet and multiple gas outlets are both located on the cavity wall of the gas chamber. The gas inlet is connected to the gas supply device via a pipe. The multiple gas outlets are evenly distributed along the circumference of the combustion plate on the cavity wall of the gas chamber. The central combustion seat is located at the center of the combustion plate. The central combustion seat has a combustion-supporting inlet and a combustion-supporting outlet. The combustion-supporting inlet serves as the combustion-supporting gas supply inlet for the combustion seat assembly. The combustion-supporting inlet is connected to the combustion-supporting gas supply device through a pipeline.

[0011] Specifically, the zero-carbon gas combustion system further includes a mixing tank, which is connected to the gas supply device, the auxiliary gas supply device, and the gas inlet of the combustion plate via pipelines. The mixing tank is used to mix the gas from the gas supply device and the auxiliary gas from the auxiliary gas supply device, and to transport the mixed gas from the gas supply device and the auxiliary gas to the combustion chamber via pipelines and the combustion plate.

[0012] Specifically, the combustion seat assembly is positioned at a height higher than the horizontal height of the protective pipe at the combustion inlet.

[0013] Specifically, a glass observation window is provided on the side wall of the burner.

[0014] The zero-carbon gas combustion system provided by this invention supplies gas and oxidizing gas to the combustion chamber through a combustion seat assembly located within the combustion chamber. The exhaust gas generated by the combustion of the gas and oxidizing gas in the combustion chamber is discharged from the combustion outlet. A protective pipe is installed at the combustion inlet, adhering to the inner wall of the burner. Multiple protective gas outlets are formed on the pipe wall. The protective gas supply device delivers protective gas into the protective pipe, which is then ejected from the multiple protective gas outlets. The ejected protective gas forms a protective gas wall between the combustion seat assembly and the inner wall of the combustion chamber. This protective gas wall isolates the inner wall of the combustion chamber from the high-temperature, high-pressure gas generated by the combustion of the gas and oxidizing gas, thereby improving the burner's service life. This solves the problem in existing technologies where the high-temperature, high-pressure gas directly heats the inner wall of the combustion chamber, shortening its lifespan. The protective gas ejected from the outlets not only protects the inner wall of the combustion chamber but also controls the shape of the flame during combustion. Furthermore, it enables oxygen-rich combustion within the combustion chamber, increasing the flame temperature and consequently the temperature of the exhaust gas, thus maximizing combustion efficiency in the thermal cycle.

[0015] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the layout of the zero-carbon gas combustion system provided by the present invention; Figure 2 yes Figure 1 A schematic diagram of the burner structure in a zero-carbon gas combustion system; Figure 3 yes Figure 1A cross-sectional view of the burner in a zero-carbon gas combustion system (AA). Figure 4 yes Figure 1 A schematic diagram of the external structure of the burner in a zero-carbon gas combustion system.

[0017] Explanation of reference numerals in the attached figures 1. Burner; 2. Cooler; 3. Adsorber; 4. Compressor; 5. Gas cylinder; 6. Buffer tank; 7. Gas supply device; 8. Auxiliary gas supply device; 9. Mixing tank; 11. Combustion chamber; 12. Combustion inlet; 13. Combustion outlet; 14. Central combustion seat; 15. Combustion pan; 16. Protective pipe; 141. Auxiliary gas outlet; 151. Gas outlet; 161. Protective gas outlet. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0019] Figure 1 This is a schematic diagram of the layout of a zero-carbon gas combustion system; Figure 2 yes Figure 1 A schematic diagram of the burner structure in a zero-carbon gas combustion system; Figure 3 yes Figure 1 A cross-sectional view of the burner in a zero-carbon gas combustion system (AA section). Figure 4 yes Figure 1 A schematic diagram of the external structure of the burner in a zero-carbon gas combustion system. (See diagram below.) Figures 1-4 As shown, the present invention provides a zero-carbon gas combustion system, the zero-carbon gas combustion system comprising: Burner 1 has a combustion chamber 11, a combustion inlet 12 and a combustion outlet 13, wherein fuel gas and auxiliary fuel gas are burned in the combustion chamber 11 and the exhaust gas produced is discharged from the combustion outlet 13; A combustion seat assembly is located inside the burner 1 at the combustion inlet 12. The combustion seat assembly is used to supply fuel gas and auxiliary fuel gas into the combustion chamber 11. The protective conduit 16 has a protective gas inlet and multiple protective gas outlets 161. The multiple protective gas outlets 161 are disposed on the pipe wall of the protective conduit 16. The protective conduit 16 is disposed at the combustion inlet 12, which is attached to the inner wall of the combustion chamber 11. The protective gas enters the protective conduit 16 through the protective gas inlet and is ejected from the multiple protective gas outlets 161 to form a protective gas wall that isolates the combustion seat assembly and the inner wall of the combustion chamber 11. The gas supply device 7 is connected to the gas supply inlet of the combustion seat assembly through a pipeline, and the gas supply device 7 supplies gas to the combustion chamber 11 through the combustion seat assembly; The combustion gas supply device 8 is connected to the combustion gas supply inlet of the combustion seat assembly through a pipeline, and the combustion gas supply device 8 supplies combustion gas to the combustion chamber 11 through the combustion seat assembly; A protective gas supply device is connected to the protective gas inlet of the protective pipeline 16, and the protective gas supply device supplies protective gas to the combustion chamber 11 through the protective pipeline 16.

[0020] The zero-carbon gas combustion system provided by this invention includes a combustion seat assembly located at the combustion inlet 12 of the burner 1 within the combustion chamber 11 of the burner 1. The burner 1 has a cylindrical structure. A gas supply device 7 is connected to the gas supply inlet of the combustion seat assembly via a gas pipe. One end of the gas pipe passes through the combustion inlet 12 and connects to the gas supply inlet, while the other end connects to the gas supply device 7. An auxiliary gas supply device 8 is connected to the auxiliary gas supply inlet of the combustion seat assembly via another gas pipe. One end of this other gas pipe passes through the combustion inlet 12 and connects to the auxiliary gas supply inlet, while the other end connects to the auxiliary gas supply device 8. The gas supply device 7 and... The combustion gas supply device 8 supplies gas and oxidizing gas to the combustion chamber 11 through the combustion seat assembly. The oxidizing gas is oxygen. The exhaust gas produced by the combustion of the gas and oxidizing gas in the combustion chamber 11 is discharged from the combustion outlet 13. In order to prevent the high temperature and high pressure gas generated by the combustion of the gas and oxidizing gas from continuously scorching the inner wall of the combustion chamber 11, a protective pipe 16 is installed at the combustion inlet 12 of the burner 1, which is close to the inner wall of the combustion chamber 11. Multiple protective gas outlets 161 are opened on the protective pipe 16. The protective gas supply device is connected to the protective gas inlet of the protective pipe 16 and supplies protective gas to the combustion chamber 11 through the protective pipe 16. The protective gas enters the protective pipe 16 and exits from multiple protective gas outlets 161. The protective gas exiting from the multiple protective gas outlets 161 forms a protective gas wall between the inner wall of the combustion chamber 11 and the combustion seat assembly. This protective gas wall isolates the inner wall of the combustion chamber 11 from the high temperature generated by combustion. The extension direction of the protective gas outlets 161 can be parallel to the axial direction of the burner 1, or the extension direction of the protective gas outlets 161 can be set to have a certain deflection angle with the axis of the burner 1. In this way, when the protective gas outlets 161 have a certain deflection angle with the axis of the burner 1, the protective gas exiting from the protective gas outlets 161 can guide the flame. The flame shape is controlled by rotating within the combustion chamber 11. The deflection angle between the protective gas outlet 161 and the axis of the burner 1 is between 0-45°. This zero-carbon gas combustion system solves the problem in the prior art where the high-temperature and high-pressure gas generated during combustion in the combustion chamber directly heats the inner wall of the combustion chamber, leading to a shortened burner life. It ensures the safety of combustion within the combustion chamber. At the same time, by spraying protective gas into the combustion chamber 11 to protect the inner wall of the burner 1, oxygen-rich combustion can be achieved within the combustion chamber 11, thereby increasing the flame temperature and the temperature of the exhaust gas produced by combustion. This also allows for better utilization of combustion efficiency in the thermal cycle.

[0021] To improve resource utilization while avoiding environmental pollution from combustion exhaust gases, such as Figure 1As shown, the zero-carbon gas combustion system further includes a cooling and filtering device, which is connected to the combustion outlet 13 of the burner 1 and the protective gas supply device, for cooling and filtering the exhaust gas discharged from the combustion outlet 13, and sending the cooled and filtered exhaust gas as protective gas into the protective gas supply device for storage.

[0022] The cooling and filtration device includes: a cooler 2 and an adsorber 3; The cooler 2 is used to cool the exhaust gas and absorb and utilize the waste heat in the exhaust gas. The adsorber 3 is used to filter sulfur dioxide, nitrogen oxides and fly ash particles in the cooled exhaust gas. The exhaust gas is discharged from the combustion outlet 13 of the burner 1, passes through the cooler 2 and the adsorber 3 in sequence, and is then sent to the protective gas supply device for storage as protective gas.

[0023] The zero-carbon gas combustion system further includes a compressor 4, which is disposed between the protective gas supply device and the adsorber 3. The compressor 4 is used to pressurize the protective gas supplied to the protective gas supply device.

[0024] The exhaust gas discharged from the combustion outlet 13 of the burner 1 is cooled by the cooler 2 in the cooling and filtering device. The cooler 2 can also absorb the residual heat in the exhaust gas for use. After cooling, the exhaust gas is filtered by the adsorber 3 to remove sulfur dioxide, nitrogen oxides and fly ash particles. The gas in the filtered exhaust gas is mostly carbon dioxide. The cooled and filtered exhaust gas can be used as a protective gas. In order to ensure that the protective gas sent into the combustion chamber 11 has sufficient pressure to form a protective gas wall between the inner wall of the combustion chamber 11 and the combustion seat assembly, or to control the shape of the flame during combustion, the cooled and filtered exhaust gas is pressurized by the compressor 4. The pressurized exhaust gas is stored in the protective gas supply device as a protective gas.

[0025] To ensure a continuous supply of protective gas into the combustion chamber 11, the protective gas supply device includes: a buffer tank 6 and a gas storage cylinder 5 that are interconnected. The gas storage cylinder 5 is used to store protective gas; The buffer tank 6 is connected to the compressor 4 and is used to store the pressurized protective gas. The pressure of the protective gas is controlled between 10 and 30 MPa.

[0026] like Figure 1As shown, the protective gas can be obtained from the exhaust gas produced by the combustion of fuel gas and oxidizing gas in the combustion chamber 11. However, in the initial stage of combustion, there is no cooled and filtered exhaust gas stored as protective gas in the protective gas supply device. Therefore, the protective gas supply device is divided into a buffer tank 6 and a gas storage cylinder 5. The pressure of the protective gas stored in the gas storage cylinder 5 is also increased and stored in the gas storage cylinder 5. Carbon dioxide gas is pre-stored in the gas storage cylinder 5 as protective gas for the initial combustion of the combustion chamber 11. Before the cooled and filtered exhaust gas is stored in the buffer tank 6, the protective gas stored in the gas storage cylinder 5 can be sent into the combustion chamber 11. After a period of combustion, when the exhaust gas produced by combustion can continuously supply protective gas, protective gas can be supplied to the combustion chamber 11 through the protective gas stored in the buffer tank 6. In this way, the safe use of the burner 1 can be ensured, and the zero-carbon gas combustion system can also have stronger controllability.

[0027] In one embodiment, such as Figures 1-4 As shown, the combustion chamber assembly includes: a central combustion chamber 14 and an annular combustion disc 15; The combustion plate 15 has a gas chamber, a gas inlet and multiple gas outlets 151. The gas inlet serves as the gas supply inlet for the combustion seat assembly. The gas inlet and multiple gas outlets 151 are both located on the cavity wall of the gas chamber. The gas inlet is connected to the gas supply device 7 through a pipe. The multiple gas outlets 151 are evenly distributed on the cavity wall of the gas chamber along the circumferential direction of the combustion plate 15. The central combustion seat 14 is located at the center of the combustion plate 15. The central combustion seat 14 has a combustion-supporting inlet and a combustion-supporting outlet 141. The combustion-supporting inlet serves as the combustion-supporting gas supply inlet for the combustion seat assembly. The combustion-supporting inlet is connected to the combustion-supporting gas supply device 8 through a pipeline.

[0028] The combustion disc 15 has a circular structure and is located at the center of the combustion chamber 11, at the combustion inlet 12. The central combustion seat 14 is located at the center of the combustion disc 15. The gas ejected from the combustion disc 15 and the combustion-supporting gas ejected from the combustion-supporting outlet 141 of the central combustion seat 14 burn in the combustion chamber 11. The protective pipe 16 is installed against the inner wall of the combustion chamber 11 at the combustion inlet 12 to prevent the high temperature generated by combustion from scorching the inner wall of the combustion chamber 11 and the protective pipe 16. Figure 1 , Figure 2 and Figure 4As shown, the combustion seat assembly is positioned at a height higher than the horizontal height of the protective pipe 16 at the combustion inlet 12. The area with the highest temperature generated by combustion in the combustion chamber 11 is above the combustion seat assembly. Placing the protective pipe 16 below the combustion seat assembly avoids the high temperature from scorching the protective pipe 16. At the same time, the protective gas wall formed by the protective gas ejected from the multiple protective gas outlets 161 of the protective pipe 16 starts closer to the combustion inlet 12, which can provide a wider protection range for the inner wall of the combustion chamber 11. In order to form a continuous protective gas wall, the opening direction of each protective gas outlet 161 is consistent, and the extension direction of each protective gas outlet 161 is consistent with the extension direction of the axis of the burner 1. The protective gas wall formed in this way can better isolate the high temperature from the damage to the inner wall of the combustion chamber 11, extend the service life of the burner 1, and improve the safety of the burner 1. The extension direction of the protective gas outlet 161 can also be set to have a certain deflection angle with the extension direction of the axis of the burner 1, so that the flame shape in the combustion chamber 11 can be controlled by the ejected protective gas to ensure production safety.

[0029] In one embodiment, the zero-carbon gas combustion system further includes a mixing tank 9, which is connected to the gas supply device 7, the auxiliary gas supply device 8, and the gas inlet of the combustion plate 15 via pipelines. The mixing tank 9 is used to mix the gas from the gas supply device 7 and the auxiliary gas from the auxiliary gas supply device 8, and to transport the mixed gas of gas and auxiliary gas to the combustion chamber 11 via pipelines and the combustion plate 15.

[0030] The combustion gas used is usually formed by mixing and blending various gases. A certain amount of gas and auxiliary gas are input into the mixing tank 9 through the gas supply device 7 and the auxiliary gas supply device 8 to form the final gas that is sent into the combustion chamber 11. The auxiliary gas supplied by the auxiliary gas supply device 8 is oxygen. The auxiliary gas supply device 8 can simultaneously supply oxygen to the central combustion seat 14 of the combustion seat assembly. In this way, oxygen-rich combustion can be achieved in the combustion chamber 11. This not only increases the temperature of the flame and the temperature of the exhaust gas produced during combustion, but also fully utilizes the combustion efficiency in the subsequent thermodynamic cycle. At the same time, the protective gas wall formed by the protective gas can effectively isolate the high temperature generated by oxygen-rich combustion from scorching the inner wall of the combustion chamber 11, extending the service life of the burner 1 and realizing oxygen-rich combustion in the combustion chamber 11.

[0031] To facilitate observation of the combustion process within the combustion chamber 11, a glass observation window is provided on the side wall of the burner 1. This window, located on the side wall of the combustion section of the burner 1, allows for easy observation of the shape of the flame within the combustion chamber 11. The glass observation window is made of heat-resistant glass, ensuring both convenient observation and safe operation.

[0032] like Figure 1 As shown, the zero-carbon gas combustion system also includes a pressure monitoring gauge, a regulating valve, and a control device. The control device is connected to the pressure monitoring gauge and the regulating valve via signal transmission. The regulating valve is installed on the protective gas pipeline 16, and the pressure monitoring gauge is installed in the combustion chamber 11 of the burner 1. The pressure monitoring gauge is used to monitor the pressure value of the high-temperature gas in the combustion chamber 11 and transmit the pressure value to the control device. The control device sends a regulation command to the regulating valve according to the received pressure value to adjust the opening of the regulating valve, thereby adjusting the gas pressure value in the combustion chamber 11.

[0033] The zero-carbon gas combustion system provided by this invention supplies gas and oxidizing gas to the combustion chamber through a combustion seat assembly located within the combustion chamber. The exhaust gas generated by the combustion of the gas and oxidizing gas in the combustion chamber is discharged from the combustion outlet. A protective pipe is installed at the combustion inlet, adhering to the inner wall of the burner. Multiple protective gas outlets are formed on the pipe wall. The protective gas supply device delivers protective gas into the protective pipe, which is then ejected from the multiple protective gas outlets. The ejected protective gas forms a protective gas wall between the combustion seat assembly and the inner wall of the combustion chamber. This protective gas wall isolates the inner wall of the combustion chamber from the high-temperature, high-pressure gas generated by the combustion of the gas and oxidizing gas, thereby improving the burner's service life. This solves the problem in existing technologies where the high-temperature, high-pressure gas directly heats the inner wall of the combustion chamber, shortening its lifespan. The protective gas ejected from the outlets not only protects the inner wall of the combustion chamber but also controls the shape of the flame during combustion. Furthermore, it enables oxygen-rich combustion within the combustion chamber, increasing the flame temperature and consequently the temperature of the exhaust gas, thus maximizing combustion efficiency in the thermal cycle.

[0034] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0035] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0036] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A zero-carbon gas combustion system, characterized by, The zero-carbon gas combustion system includes: The burner (1) has a combustion chamber (11), a combustion inlet (12) and a combustion outlet (13), wherein the fuel gas and the auxiliary fuel gas are burned in the combustion chamber (11) and the exhaust gas produced is discharged from the combustion outlet (13); A combustion seat assembly is located inside the burner (1) at the combustion inlet (12), and the combustion seat assembly is used to supply fuel gas and auxiliary fuel gas into the combustion chamber (11); The protective pipe (16) has a protective gas inlet and multiple protective gas outlets (161). The multiple protective gas outlets (161) are disposed on the pipe wall of the protective pipe (16). The protective pipe (16) is disposed at the combustion inlet (12) in close contact with the inner wall of the combustion chamber (11). The protective gas enters the protective pipe (16) through the protective gas inlet and is ejected from the multiple protective gas outlets (161) to form a protective gas wall that isolates the combustion seat assembly and the inner wall of the combustion chamber (11). A gas supply device (7) is connected to the gas supply inlet of the combustion seat assembly via a pipeline, and the gas supply device (7) supplies gas to the combustion chamber (11) through the combustion seat assembly; The gas supply device (8) is connected to the gas supply inlet of the combustion seat assembly through a pipeline, and the gas supply device (8) supplies gas to the combustion chamber (11) through the combustion seat assembly; A protective gas supply device is connected to the protective gas inlet of the protective pipe (16), and the protective gas supply device supplies protective gas to the combustion chamber (11) through the protective pipe (16).

2. The zero-carbon gas combustion system of claim 1, wherein, The zero-carbon gas combustion system further includes a cooling and filtering device, which is connected to the combustion outlet (13) of the burner (1) and the protective gas supply device, for cooling and filtering the exhaust gas discharged from the combustion outlet (13), and sending the cooled and filtered exhaust gas as protective gas into the protective gas supply device for storage.

3. The zero-carbon gas combustion system according to claim 2, characterized in that, The cooling and filtration device includes: a cooler (2) and an adsorber (3); The cooler (2) is used to cool the exhaust gas and absorb and utilize the residual heat in the exhaust gas; The adsorber (3) is used to filter sulfur dioxide, nitrogen oxides and fly ash particles in the cooled exhaust gas. The exhaust gas is discharged from the combustion outlet (13) of the burner (1), passes through the cooler (2) and the adsorber (3) in sequence, and is then sent to the protective gas supply device for storage as protective gas.

4. The zero-carbon gas combustion system according to claim 3, characterized in that, The zero-carbon gas combustion system further includes a compressor (4), which is disposed between the protective gas supply device and the adsorber (3). The compressor (4) is used to pressurize the protective gas supplied to the protective gas supply device.

5. The zero-carbon gas combustion system according to claim 4, characterized in that, The protective gas supply device includes: a buffer tank (6) and a gas storage cylinder (5) that are interconnected. The gas cylinder (5) is used to store protective gas; The buffer tank (6) is connected to the compressor (4) and is used to store the pressurized protective gas.

6. The zero-carbon gas combustion system according to claim 5, characterized in that, The protective gas is carbon dioxide.

7. The zero-carbon gas combustion system according to claim 1, characterized in that, The combustion chamber assembly includes: a central combustion chamber (14) and an annular combustion disc (15). The combustion plate (15) has a gas chamber, a gas inlet and multiple gas outlets (151). The gas inlet serves as the gas supply inlet for the combustion seat assembly. The gas inlet and multiple gas outlets (151) are both located on the cavity wall of the gas chamber. The gas inlet is connected to the gas supply device (7) through a pipe. The multiple gas outlets (151) are evenly distributed on the cavity wall of the gas chamber along the circumferential direction of the combustion plate (15). The central combustion seat (14) is located at the center of the combustion plate (15). The central combustion seat (14) has a combustion-supporting inlet and a combustion-supporting outlet (141). The combustion-supporting inlet serves as the combustion-supporting gas supply inlet for the combustion seat assembly. The combustion-supporting inlet is connected to the combustion-supporting gas supply device (8) through a pipeline.

8. The zero-carbon gas combustion system according to claim 7, characterized in that, The zero-carbon gas combustion system further includes a mixing tank (9), which is connected to the gas inlet of the gas supply device (7), the auxiliary gas supply device (8) and the combustion plate (15) through pipelines. The mixing tank (9) is used to mix the gas from the gas supply device (7) and the auxiliary gas from the auxiliary gas supply device (8), and to transport the mixed gas of gas and auxiliary gas to the combustion chamber (11) through pipelines and the combustion plate (15).

9. The zero-carbon gas combustion system according to claim 1, characterized in that, The combustion seat assembly is positioned at a height higher than the horizontal height of the protective pipe (16) at the combustion inlet (12).

10. The zero-carbon gas combustion system according to claim 1, characterized in that, A glass observation window is provided on the side wall of the burner (1).

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