A combustion chamber, a gas turbine and a gas turbine system

Abstract

The present application relates to power generation technology field, specifically to a combustion chamber, gas turbine and gas turbine system, the combustion chamber includes: the flame tube and air supply cavity connected; Fuel supply cavity is connected with air supply cavity or flame tube; CO2 supply cavity provides CO2 to air supply cavity or flame tube. The gas turbine includes: the combustion chamber. The gas turbine system includes: the gas turbine, waste heat boiler, CO2 capture device, CO2 storage device, CO2 pressure regulating station, CO2 temperature control unit, pressure control valve and flow control valve connected in turn; The gas turbine is connected with the flow control valve; The application will pass into the combustion chamber, dilute hydrogen-doped natural gas, reduce the flame temperature, inhibit the flame radius speed, reduce the flame propagation speed, effectively prevent backfire; Improve the hydrogen-doped proportion of the combustion chamber; Reduce the generation and emission of pollutants; Recycling CO2, reduce carbon emissions, with environmental benefits.

Description

Technical Field

[0001] This invention relates to the field of power generation technology, specifically to a combustion chamber, a gas turbine, and a gas turbine system. Background Technology

[0002] Since the Industrial Revolution, human activities have released large amounts of carbon dioxide into the atmosphere, causing a sharp increase in the concentration of greenhouse gases in the atmosphere, an increasingly stronger greenhouse effect, and a gradual warming of the global climate, resulting in a series of global climate problems that are difficult for current science to predict.

[0003] To reduce carbon emissions at their source, some power generation companies have successfully blended natural gas with hydrogen and fed it into the combustion chamber of heavy-duty gas turbines, significantly reducing carbon emissions while maintaining production. However, due to the high combustion speed and susceptibility to backfire of hydrogen, it is difficult to further increase the proportion of blended hydrogen without altering the overall structure of the combustion chamber. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the hydrogen blending ratio is relatively low when natural gas and hydrogen are mixed and burned, due to the problems of fast hydrogen combustion and easy backfire.

[0005] To achieve the above objectives, the present invention provides a combustion chamber comprising:

[0006] A flame tube, having a cavity that provides combustion space;

[0007] An air supply chamber is connected to the flame tube, and the air supply chamber is adapted to supply air to the flame tube;

[0008] A fuel supply chamber is connected to the air supply chamber or the flame tube, and the fuel supply chamber is adapted to supply a premixed gas of natural gas and hydrogen to the air supply chamber or the flame tube;

[0009] A CO2 supply chamber is sleeved on the outer periphery of the fuel supply chamber. The CO2 supply chamber is connected to an air supply chamber or a flame tube, and the CO2 supply chamber is adapted to supply CO2 to the air supply chamber or the flame tube. The air supply chamber is located on the outer periphery of the CO2 supply chamber.

[0010] Optionally, the air supply chamber is a first air annular chamber, the CO2 supply chamber is a first CO2 annular chamber, and the fuel supply chamber is a first fuel column chamber;

[0011] The first air annular cavity is sleeved on the outer periphery of the first CO2 annular cavity; a plurality of first cyclones are provided circumferentially near the end of the first air annular cavity; a CO2 chamber and a first fuel chamber are provided on the first cyclones;

[0012] The first CO2 annular cavity is connected to the CO2 chamber through a first delivery hole, and the first fuel column cavity is connected to the first fuel chamber through a second delivery hole;

[0013] The CO2 chamber is connected to the end of the air chamber through a first supply hole, and the first fuel chamber is connected to the end of the first air ring chamber through a second supply hole.

[0014] Optionally, it also includes:

[0015] A premixing chamber is disposed between the flame tube and the air supply chamber; the premixing chamber is connected to both the flame tube and the air supply chamber;

[0016] The fuel supply chamber is a second fuel column chamber, the CO2 supply chamber is a second CO2 annular chamber, and the air supply chamber is a plurality of second air annular chambers spaced around the second CO2 annular chamber. An intermediate annular chamber is provided on the outer periphery of the second air annular chamber near the end.

[0017] The second CO2 annular cavity is connected to the intermediate annular cavity through the third delivery hole; the intermediate annular cavity is connected to the corresponding second air annular cavity through the third supply hole.

[0018] Optionally, a plurality of second cyclones are provided circumferentially near the end of the second air ring cavity; a second fuel chamber is provided on the second cyclones; the second fuel column cavity is connected to the second fuel chamber through a fourth delivery hole; the second fuel chamber is connected to the end of the second air ring cavity through a fourth supply hole;

[0019] The third supply hole is disposed on the wall of the second air ring cavity, and the third supply hole is located on one or both sides of the second cyclone separator.

[0020] Optionally, the CO2 supplied by the CO2 supply chamber is gaseous CO2.

[0021] Optionally, the fuel supply chamber is a third fuel column chamber, the CO2 supply chamber is a third CO2 annular chamber, and the air supply chamber is a plurality of third air annular chambers spaced apart and surrounding the third CO2 annular chamber;

[0022] A plurality of third cyclones are arranged circumferentially near the end of the third air annular cavity; a third fuel chamber is provided on the third cyclones; the third fuel column cavity is connected to the third fuel chamber through a fifth delivery hole; the third fuel chamber is connected to the end of the third air annular cavity through a fifth supply hole;

[0023] The third CO2 annular cavity is connected to the flame tube through a plurality of sixth supply holes provided circumferentially at its end.

[0024] Optionally, the CO2 provided by the third CO2 annular cavity is supercritical CO2.

[0025] Optionally, the sixth supply hole is arranged at an angle to the central axis of the flame tube, and the outlet of the sixth supply hole is inclined in a direction away from the central axis of the flame tube, wherein the angle range is 15 to 60 degrees.

[0026] The present invention also provides a gas turbine, including: the combustion chamber.

[0027] The present invention also provides a gas turbine system, comprising:

[0028] The gas turbine mentioned above;

[0029] The waste heat boiler, CO2 capture device, CO2 storage device, CO2 pressure regulating station, CO2 temperature control unit, pressure control valve and flow control valve are connected in sequence.

[0030] The gas turbine is connected to the waste heat boiler and the flow control valve.

[0031] The technical solution of the present invention has the following advantages compared with the prior art:

[0032] 1. The combustion chamber provided by the present invention comprises: a flame tube having a cavity providing combustion space; an air supply chamber connected to the flame tube, the air supply chamber being adapted to supply air to the flame tube; a fuel supply chamber connected to the air supply chamber or the flame tube, the fuel supply chamber being adapted to supply a premixed gas of natural gas and hydrogen to the air supply chamber or the flame tube; and a CO2 supply chamber sleeved on the outer periphery of the fuel supply chamber, the CO2 supply chamber being connected to the air supply chamber or the flame tube, and the CO2 supply chamber being adapted to supply CO2 to the air supply chamber or the flame tube; the air supply chamber is disposed on the outer periphery of the CO2 supply chamber; the present application adopts the above technical solution, when natural gas and hydrogen are mixed and burned, after CO2 is introduced, due to the high specific heat of CO2, the average specific heat of the mixed gas can be significantly increased, resulting in a decrease in the temperature of the premixed gas, suppressing the increase rate of the flame radius, thereby reducing the flame propagation speed and the risk of backfire, making the flame front more stable, significantly increasing the hydrogen blending ratio, and ensuring the safe and stable operation of the gas turbine. Meanwhile, the dilution effect of CO2 on the combustion of natural gas with hydrogen can effectively reduce the flame temperature, thereby reducing the generation of thermal nitrogen oxides, which is conducive to achieving efficient and low-pollution combustion of natural gas and hydrogen.

[0033] 2. The air supply chamber of the present invention is a first air annular chamber, the CO2 supply chamber is a first CO2 annular chamber, and the fuel supply chamber is a first fuel column chamber; the first air annular chamber is sleeved on the outer periphery of the first CO2 annular chamber; a plurality of first cyclones are provided circumferentially near the end of the first air annular chamber; a CO2 chamber and a first fuel chamber are provided on the first cyclones; the first CO2 annular chamber is connected to the CO2 chamber through a first conveying hole, and the first fuel column chamber is connected to the first fuel chamber through a second conveying hole; the CO2 chamber is connected to the end of the first air annular chamber through a first supply hole, and the first fuel chamber is connected to the end of the first air annular chamber through a second supply hole; the present application adopts the above technical solution, specifically defining the structure of the combustion chamber, mixing CO2, air and premixed gas after the first cyclones, shortening the length of the combustion chamber, and making the structure of the combustion chamber more compact.

[0034] 3. The combustion chamber provided by the present invention further includes: a premixing chamber disposed between the flame tube and the air supply chamber; the premixing chamber is connected to both the flame tube and the air supply chamber; the fuel supply chamber is a second fuel column chamber, the CO2 supply chamber is a second CO2 annular chamber, and the air supply chamber is a plurality of second air annular chambers spaced apart and surrounding the second CO2 annular chamber, with an intermediate annular chamber provided on the outer periphery near the end of the second air annular chamber; the second CO2 annular chamber is connected to the intermediate annular chamber through a third conveying hole; the intermediate annular chamber is connected to the corresponding second air annular chamber through a third supply hole; the present application adopts the above technical solution to specifically define the structure of the combustion chamber, and mixes CO2, air and premixed gas in the premixing chamber, reducing the design and processing difficulty of the air supply chamber, thereby reducing the cost of the combustion chamber.

[0035] 4. In this invention, a plurality of second swirlers are provided circumferentially near the end of the second air annular cavity; a second fuel chamber is provided on the second swirler; the second fuel column cavity is connected to the second fuel chamber through a fourth conveying hole; the second fuel chamber is connected to the end of the second air annular cavity through a fourth supply hole; the third supply hole is provided on the wall of the second air annular cavity, and the third supply hole is located on one or both sides of the second swirler; by adopting the above technical solution, when the third supply hole is provided on both sides of the second swirler, the mixing effect can be improved; when the third supply hole is provided only on the side of the second swirler away from the flame tube, the structure of the combustion chamber is also more compact.

[0036] 5. The fuel supply chamber of the present invention is a third fuel column chamber, the CO2 supply chamber is a third CO2 annular chamber, and the air supply chamber is a plurality of third air annular chambers spaced around the third CO2 annular chamber; a plurality of third cyclones are arranged circumferentially near the end of the third air annular chamber; a third fuel chamber is arranged on the third cyclones; the third fuel column chamber is connected to the third fuel chamber through a fifth delivery hole; the third fuel chamber is connected to the end of the third air annular chamber through a fifth supply hole; the third CO2 annular chamber is connected to the flame tube through a plurality of sixth supply holes arranged circumferentially at the end; the present application adopts the above technical solution, specifically defining the structure of the combustion chamber, injecting CO2 directly into the flame tube without premixing, so that it dilutes natural gas, hydrogen and air in the flame tube; that is, CO2, air and premixed gas are mixed in the flame tube, reducing the design and processing difficulty of the third cyclones, thereby reducing the cost of the combustion chamber; the structure of the combustion chamber is also simpler and more compact.

[0037] 6. The CO2 provided by the third CO2 annular cavity in this invention is supercritical CO2; the above technical solution adopted in this application means that supercritical CO2 has the density of a liquid, the viscosity and compressibility of a gas, and is easy to diffuse, which helps it to mix with natural gas, hydrogen and air, and improves the mixing effect.

[0038] 7. The sixth supply hole of the present invention is arranged at an angle to the central axis of the flame tube, and the outlet of the sixth supply hole is inclined in a direction away from the central axis of the flame tube, the angle range being 15 to 60 degrees; the present application adopts the above technical solution, and after CO2 is transmitted from the sixth supply hole, the dilution and mixing effect is ensured.

[0039] 8. The gas turbine system provided by the present invention includes: the gas turbine; a waste heat boiler, a CO2 capture device, a CO2 storage device, a CO2 pressure regulating station, a CO2 temperature control unit, a pressure control valve, and a flow control valve connected in sequence; the gas turbine is connected to both the waste heat boiler and the flow control valve; the present application adopts the above technical solution, when the gas turbine burns a mixture of natural gas with high hydrogen content and hydrogen, the captured CO2 is introduced into the combustion chamber of the gas turbine to dilute the hydrogen-blended natural gas. CO2 has a high specific heat, which increases the average specific heat of the mixture, reduces the temperature of the combustible mixture, effectively reduces the flame temperature, inhibits the increase rate of the flame radius, thereby reducing the flame propagation speed, effectively preventing backfire, and thus increasing the hydrogen blending ratio in the combustion chamber, enabling the gas turbine to operate safely and stably under high hydrogen content conditions, while reducing the generation and emission of pollutants such as thermal nitrogen oxides. By adjusting the temperature of CO2 using a CO2 temperature control unit and regulating the pressure of CO2 using a CO2 pressure regulating station, CO2 can be easily brought to a supercritical state. At the same time, CO2 can be recycled, reducing carbon emissions into the atmosphere and resulting in significant environmental benefits. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a partial three-dimensional cross-sectional view of the combustion chamber provided in Embodiment 1 of the present invention;

[0042] Figure 2 This is a partial cross-sectional view of the combustion chamber provided in Embodiment 1 of the present invention;

[0043] Figure 3 for Figure 2 A cross-sectional view of the structure along line A-A;

[0044] Figure 4 This is a partial three-dimensional structural diagram of the combustion chamber provided in Embodiment 2 of the present invention;

[0045] Figure 5 This is a partial right-side view of the combustion chamber provided in Embodiment 2 of the present invention;

[0046] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure between points B and B;

[0047] Figure 7 for Figure 6 A magnified schematic diagram of the structure at point C in the middle;

[0048] Figure 8 This is a partial three-dimensional structural diagram of the combustion chamber provided in Embodiment 3 of the present invention;

[0049] Figure 9 This is a partial top view of the combustion chamber provided in Embodiment 3 of the present invention;

[0050] Figure 10 for Figure 9 A schematic diagram of the cross-sectional structure of D-D;

[0051] Figure 11 This is a schematic diagram of the connection structure of a gas turbine system provided in an embodiment of the present invention.

[0052] Explanation of reference numerals in the attached figures:

[0053] 1. Gas turbine; 2. Waste heat boiler; 3. CO2 capture device; 4. CO2 storage device; 5. CO2 pressure regulating station; 6. CO2 temperature control unit; 7. Pressure control valve; 8. Flow control valve; 9. First cyclone; 10. First air annular cavity; 11. First CO2 annular cavity; 12. First fuel column cavity; 13. First delivery port; 14. Second delivery port; 15. CO2 chamber; 16. First fuel chamber; 17. First supply port; 18. Second supply port; 19. Second CO2 annular cavity; 20. First CO2 supply pipeline; 21. Intermediate annular cavity; 22. Second cyclone; 23. Second fuel column cavity; 24. Third delivery port; 25. Second air annular cavity; 26. Third supply port; 27. Third fuel column cavity; 28. Third CO2 annular cavity; 29. ​​Third air annular cavity; 30. Third cyclone; 31. Sixth supply port; 32. Second CO2 supply pipeline. Detailed Implementation

[0054] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0058] like Figures 1 to 10One specific embodiment of the combustion chamber shown includes: a flame tube and an air supply chamber connected together, a fuel supply chamber connected to the air supply chamber or the flame tube, and a CO2 supply chamber sleeved around the outer periphery of the fuel supply chamber.

[0059] The flame tube has a cavity that provides a combustion space; the air supply cavity is adapted to supply air to the flame tube; the fuel supply cavity is adapted to supply a premixed gas of natural gas and hydrogen to the air supply cavity or the flame tube; the CO2 supply cavity is connected to the air supply cavity or the flame tube, and the CO2 supply cavity is adapted to supply CO2 to the air supply cavity or the flame tube; the air supply cavity is disposed on the outer periphery of the CO2 supply cavity.

[0060] Implementation Method 1

[0061] like Figures 1 to 3 As shown, the air supply chamber is a first air annular chamber 10 with a circular cross-section. Air exits from the compressor outlet and enters the first air annular chamber 10. The CO2 supply chamber is a first CO2 annular chamber 11. Specifically, the CO2 supplied by the CO2 supply chamber is gaseous CO2, and the first CO2 annular chamber 11 has a circular cross-section. The fuel supply chamber is a first fuel column chamber 12 with a circular cross-section. The first air annular chamber 10 is fitted around the outer periphery of the first CO2 annular chamber 11. The first fuel column chamber 12, the first CO2 annular chamber 11, and the first air annular chamber 10 are coaxially arranged. Near the end of the first air annular chamber 10, a plurality of first cyclones 9 are arranged circumferentially, and a CO2 chamber 15 and a first fuel chamber 16 are provided on the first cyclones 9. The first CO2 annular cavity 11 is connected to the CO2 chamber 15 through the first delivery hole 13, delivering CO2 to the CO2 chamber 15; the first fuel column cavity 12 is connected to the first fuel chamber 16 through the second delivery hole 14, delivering premixed gas to the first fuel chamber 16; the CO2 chamber 15 is connected to the end of the first air annular cavity 10 through the first supply hole 17, and the first fuel chamber 16 is connected to the end of the first air annular cavity 10 through the second supply hole 18; the number of blades, the number of the first delivery hole 13, the number of the second delivery hole 14, the number of the CO2 chamber 15, and the number of the first fuel chamber 16 in the plurality of first cyclones 9 are equal. CO2 is delivered through the first supply hole 17, mixed with natural gas, hydrogen, and air, and finally enters the flame tube for combustion.

[0062] Implementation Method 2

[0063] like Figures 4 to 7As shown, the combustion chamber further includes a premixing chamber disposed between the flame tube and the air supply chamber; the premixing chamber is connected to both the flame tube and the air supply chamber. The fuel supply chamber is a second fuel column chamber 23 with a circular cross-section; the CO2 supply chamber is a second CO2 annular chamber 19. Specifically, the CO2 supplied by the CO2 supply chamber is gaseous CO2, and the second CO2 annular chamber 19 has an annular cross-section, supplying CO2 to the second CO2 annular chamber 19 through a first CO2 supply pipeline 20. The air supply chamber consists of eight evenly spaced second air annular chambers 25 surrounding the second CO2 annular chamber 19. Air exits from the compressor outlet and enters the second air annular chamber 25; the second fuel column chamber 23 and the second CO2 annular chamber 19 are coaxially arranged; an intermediate annular chamber 21 is provided on the outer periphery near the end of the second air annular chamber 25, and the intermediate annular chamber 21 has an annular cross-section. The second CO2 annular cavity 19 is connected to the intermediate annular cavity 21 through a third delivery hole 24; the intermediate annular cavity 21 is connected to the corresponding second air annular cavity 25 through a third supply hole 26; a plurality of second cyclones 22 are provided circumferentially near the end of the second air annular cavity 25; a second fuel chamber is provided on the second cyclone 22; the second fuel column cavity 23 is connected to the second fuel chamber through a fourth delivery hole; the second fuel chamber is connected to the end of the second air annular cavity 25 through a fourth supply hole; the third supply hole 26 is provided on the wall of the second air annular cavity 25, and the third supply hole 26 is located on the side of the second cyclone 22 near the flame tube. The number of the third delivery hole 24, the intermediate annular cavity 21 and the second air annular cavity 25 are equal. The second air annular cavity 25, the intermediate annular cavity 21 and the second CO2 annular cavity 19 are connected by welding to ensure the airtightness of the connection between the second CO2 annular cavity 19 and the intermediate annular cavity 21 by the third delivery hole 24. CO2 enters the second CO2 annular cavity 19 from the first CO2 supply pipeline 20, and is then transmitted to the intermediate annular cavity 21 through the third delivery hole 24 at the end of the second CO2 annular cavity 19. Finally, it is discharged through the third supply hole 26 and mixed with natural gas, hydrogen and air.

[0064] Implementation Method 3

[0065] like Figures 8 to 10As shown, the fuel supply chamber is a third fuel column chamber 27 with a circular cross-section; the CO2 supply chamber is a third CO2 annular chamber 28 with a circular cross-section. The CO2 supplied by the third CO2 annular chamber 28 is supercritical CO2, supplied to the third CO2 annular chamber 28 through a second CO2 supply pipeline 32. The air supply chamber consists of eight third air annular chambers 29 spaced around the third CO2 annular chamber 28. Air exits from the compressor outlet and enters the third air annular chambers 29. Multiple third cyclones 30 are circumferentially arranged near the end of the third air annular chamber 29; a third fuel chamber is provided on each third cyclone 30; the third fuel column chamber 27 communicates with the third fuel chamber through a fifth delivery hole; the third fuel chamber communicates with the end of the third air annular chamber 29 through a fifth supply hole. The third CO2 annular chamber 28 communicates with the flame tube through multiple sixth supply holes 31 circumferentially arranged at its end. Furthermore, the sixth supply hole 31 is arranged at an angle to the central axis of the flame tube, and the outlet of the sixth supply hole 31 is inclined in a direction away from the central axis of the flame tube, the angle range being 15 to 60 degrees.

[0066] The present invention also provides a gas turbine, including the aforementioned combustion chamber.

[0067] like Figure 11 As shown, the present invention also provides a gas turbine system, comprising: the gas turbine 1, and sequentially connected to a waste heat boiler 2, a CO2 capture device 3, a CO2 storage device 4, a CO2 pressure regulating station 5, a CO2 temperature control unit 6, a pressure control valve 7, and a flow control valve 8. The gas turbine 1 is connected to both the waste heat boiler 2 and the flow control valve 8; specifically, the outlet of the gas turbine 1 is connected to the waste heat boiler 2, the outlet of the CO2 storage device 4 is connected to the CO2 pressure regulating station 5, and the outlet of the CO2 pressure regulating station 5 is connected to the CO2 temperature control unit 6. The CO2 temperature control unit 6 can employ an economizer to heat CO2 from feedwater; the economizer is a medium-pressure economizer or a high-pressure economizer, to facilitate cost reduction and energy conservation and emission reduction. The CO2 pressure regulating station 5 can be used to increase the pressure of CO2, and the CO2 temperature control unit 6 can be used to regulate the temperature of CO2, i.e., the CO2 can be adjusted to a supercritical state through the CO2 pressure regulating station 5 and the CO2 temperature control unit 6; this simplifies the structure of the combustion chamber in the third embodiment.

[0068] The operation process of the gas turbine system described in this application is briefly described as follows: A mixture of natural gas and hydrogen is introduced into the combustion chamber of gas turbine 1 for combustion. After the high-temperature gas completes its work in gas turbine 1, it enters the waste heat boiler 2 through the flue for heat exchange and continues to do work. Then it enters the CO2 capture device 3, where CO2 is extracted and transported to the CO2 storage device 4. The CO2 passes through the CO2 pressure regulating station 5, which can adjust the CO2 pressure to the design value or to a level higher than the critical pressure, depending on the actual situation. The pressure-regulated CO2 enters the CO2 temperature control unit 6, which regulates the temperature to the same level as the temperature of the mixture of natural gas and hydrogen or the air temperature. At this point, the CO2 temperature is higher than the critical temperature. Then, the CO2 enters the pressure control valve 7 and the flow control valve 8 to adjust the pressure and flow. Finally, the CO2 is introduced into the combustion chamber of gas turbine 1 and mixed with natural gas and hydrogen for combustion.

[0069] As an alternative implementation, in Embodiment 2, the third supply hole 26 is located on the side of the second vortex 22 closer to the flame tube, instead of the third supply hole 26 being located on the side of the second vortex 22 away from the flame tube.

[0070] As an alternative implementation, in Embodiment 2, the third supply hole 26 is located on the side of the second vortex 22 near the flame tube, instead of the third supply hole 26 being located on both sides of the second vortex 22.

[0071] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A combustion chamber, characterized in that, include: A flame tube, having a cavity that provides combustion space; An air supply chamber is connected to the flame tube, and the air supply chamber is adapted to supply air to the flame tube; A fuel supply chamber is connected to the air supply chamber or the flame tube, and the fuel supply chamber is adapted to supply a premixed gas of natural gas and hydrogen to the air supply chamber or the flame tube; A CO2 supply chamber is sleeved on the outer periphery of the fuel supply chamber. The CO2 supply chamber is connected to an air supply chamber or a flame tube, and the CO2 supply chamber is adapted to supply CO2 to the air supply chamber or the flame tube. The air supply chamber is located on the outer periphery of the CO2 supply chamber. The air supply chamber is a first air annular chamber (10), the CO2 supply chamber is a first CO2 annular chamber (11), and the fuel supply chamber is a first fuel column chamber (12). The first air annular chamber (10) is sleeved on the outer periphery of the first CO2 annular chamber (11). A plurality of first cyclones (9) are provided circumferentially near the end of the first air annular chamber (10). A CO2 chamber (15) and a first fuel chamber (16) are provided on the first cyclones (9). The first CO2 annular chamber (11) is connected to the CO2 chamber (15) through a first conveying hole (13), and the first fuel column chamber (12) is connected to the first fuel chamber (16) through a second conveying hole (14). The CO2 chamber (15) is connected to the end of the first air annular chamber (10) through a first supply hole (17), and the first fuel chamber (16) is connected to the end of the first air annular chamber (10) through a second supply hole (18).

2. A combustion chamber, characterized in that, include: A flame tube, having a cavity that provides combustion space; An air supply chamber is connected to the flame tube, and the air supply chamber is adapted to supply air to the flame tube; A fuel supply chamber is connected to the air supply chamber or the flame tube, and the fuel supply chamber is adapted to supply a premixed gas of natural gas and hydrogen to the air supply chamber or the flame tube; A CO2 supply chamber is sleeved on the outer periphery of the fuel supply chamber. The CO2 supply chamber is connected to an air supply chamber or a flame tube, and the CO2 supply chamber is adapted to supply CO2 to the air supply chamber or the flame tube. The air supply chamber is located on the outer periphery of the CO2 supply chamber. The combustion chamber further includes a premixing chamber disposed between the flame tube and the air supply chamber; the premixing chamber is connected to both the flame tube and the air supply chamber; the fuel supply chamber is a second fuel column chamber (23), the CO2 supply chamber is a second CO2 annular chamber (19), and the air supply chamber is a plurality of second air annular chambers (25) spaced around the second CO2 annular chamber (19), with an intermediate annular chamber (21) provided on the outer periphery near the end of the second air annular chamber (25); the second CO2 annular chamber (19) is connected to the intermediate annular chamber (21) through a third conveying hole (24); the intermediate annular chamber (21) is connected to the third conveying hole (24). The three supply holes (26) are connected to the corresponding second air ring cavity (25); a plurality of second cyclones (22) are provided circumferentially near the end of the second air ring cavity (25); a second fuel chamber is provided on the second cyclone (22); the second fuel column cavity (23) is connected to the second fuel chamber through the fourth delivery hole; the second fuel chamber is connected to the end of the second air ring cavity (25) through the fourth supply hole; the third supply hole (26) is provided on the wall of the second air ring cavity (25), and the third supply hole (26) is located on one or both sides of the second cyclone (22).

3. The combustion chamber according to claim 1 or 2, characterized in that, The CO2 supplied by the CO2 supply chamber is gaseous CO2.

4. A combustion chamber, characterized in that, include: A flame tube, having a cavity that provides combustion space; An air supply chamber is connected to the flame tube, and the air supply chamber is adapted to supply air to the flame tube; A fuel supply chamber is connected to the air supply chamber or the flame tube, and the fuel supply chamber is adapted to supply a premixed gas of natural gas and hydrogen to the air supply chamber or the flame tube; A CO2 supply chamber is sleeved on the outer periphery of the fuel supply chamber. The CO2 supply chamber is connected to an air supply chamber or a flame tube, and the CO2 supply chamber is adapted to supply CO2 to the air supply chamber or the flame tube. The air supply chamber is located on the outer periphery of the CO2 supply chamber. The fuel supply chamber is a third fuel column chamber (27), the CO2 supply chamber is a third CO2 annular chamber (28), and the air supply chamber is a plurality of third air annular chambers (29) spaced around the third CO2 annular chamber (28). A plurality of third swirlers (30) are provided circumferentially near the end of the third air annular chamber (29). A third fuel chamber is provided on the third swirlers (30). The third fuel column chamber (27) is connected to the third fuel chamber through a fifth delivery hole. The third fuel chamber is connected to the end of the third air annular chamber (29) through a fifth supply hole. The third CO2 annular chamber (28) is connected to the flame tube through a plurality of sixth supply holes (31) provided circumferentially at the end.

5. The combustion chamber according to claim 4, characterized in that, The CO2 provided by the third CO2 annular cavity (28) is supercritical CO2.

6. The combustion chamber according to claim 4 or 5, characterized in that, The sixth supply hole (31) is arranged at an angle to the central axis of the flame tube, and the outlet of the sixth supply hole (31) is inclined in a direction away from the central axis of the flame tube, with an angle range of 15 to 60 degrees.

7. A gas turbine, characterized in that, include: The combustion chamber according to any one of claims 1-6.

8. A gas turbine system, characterized in that, include: The gas turbine (1) according to claim 7; The waste heat boiler (2), CO2 capture device (3), CO2 storage device (4), CO2 pressure regulating station (5), CO2 temperature control unit (6), pressure control valve (7) and flow control valve (8) are connected in sequence. The gas turbine (1) is connected to the waste heat boiler (2) and the flow control valve (8).

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