A system and its regulation method that couples an ion solution thermal storage cycle and a high-temperature heat pump cycle.

Abstract

This invention discloses a system and its regulation method that couples an ionic solution heat storage cycle and a high-temperature heat pump cycle. In the system's desorption tower, a waste heat medium is introduced to desorb a CO2-amino functional ionic solution. The separated CO2 is stored in a first storage tank, and the regenerated amino functional ionic solution is transported to an absorption tower via a third storage tank. In the absorption tower, CO2 is absorbed and heat is released. The resulting CO2-amino functional ionic solution is stored in a second storage tank and then sent to the desorption tower for further desorption, achieving efficient storage and utilization of waste heat. In the high-temperature heat pump cycle, a non-azeotropic CO2 working fluid selectively absorbs components through an absorption tower. By adjusting the pressure and CO2 flow rate of the absorption tower, the concentration of components in the working fluid can be flexibly controlled, thereby optimizing the system's performance and efficiency under different operating conditions.

Description

Technical Field

[0001] This invention relates to heat pumps, and more specifically to a system and its regulation method that couples an ionic solution heat storage cycle and a high-temperature heat pump cycle. Background Technology

[0002] Traditional heat pump waste heat utilization technology faces significant performance and efficiency limitations on the source-load side, heat exchange end, and heat storage end. For example, fluctuations on the source-load side lead to poor spatiotemporal matching, making it difficult to achieve efficient energy utilization; during the heat exchange process, irreversible losses reduce the overall efficiency of the system; and traditional low-temperature heat storage methods, such as sensible heat storage in water tanks, have poor heat storage performance and cannot meet the requirements for efficient heat storage.

[0003] On the other hand, conventional heat pump systems experience a significant decrease in performance and adaptability when deviating from their design operating conditions, especially when using non-azeotropic working fluid cycles. Non-azeotropic working fluids exhibit temperature glide during isobaric phase change, achieving an approximate Lorentz cycle. Compared to the reverse Carnot cycle of traditional working fluids, this improves temperature matching during heat exchange, reduces irreversible losses, and enhances system performance. However, under a fixed component concentration ratio, non-azeotropic working fluids struggle to fully adapt to the different cycle requirements for working fluid characteristics under varying operating conditions, leading to a sharp decline in system cycle performance under certain conditions. Summary of the Invention

[0004] Purpose of the invention: The first purpose of the invention is to provide a system that can achieve efficient storage and release of waste heat and has good adaptability to different operating conditions, combining ionic solution heat storage cycle and high-temperature heat pump cycle; the second purpose of the invention is to provide a method for regulating the system.

[0005] Technical Solution: The system of coupled ionic solution thermal storage cycle and high-temperature heat pump cycle of the present invention, wherein the ionic solution thermal storage cycle uses an amino-functional ionic solution as the working fluid and includes a desorption tower, a first compressor, a first storage tank, a first throttling valve, an absorption tower, a first solution pump, a second storage tank, a second throttling valve, a second solution pump, a third storage tank, and a third throttling valve; the desorption tower is equipped with a first spray device and a heat exchange coil, and the absorption tower is equipped with a second spray device and a packing layer; the high-temperature heat pump cycle uses a CO2 non-azeotropic mixture as the working fluid and includes an absorption tower, a second compressor, a condenser, and a fourth throttling valve;

[0006] The CO2-amino functional ionic solution sprayed from the first spray device exchanges heat with the waste heat medium flowing through the heat exchange coil. The CO2-amino functional ionic solution absorbs heat, causing CO2 desorption and regeneration of the amino functional ionic solution. The desorbed low-temperature, low-pressure CO2 vapor is discharged through the exhaust port at the top of the desorption tower, compressed into high-temperature, high-pressure CO2 vapor by the first compressor, and stored in the first storage tank. The high-temperature, high-pressure CO2 vapor in the first storage tank is transported to the bottom of the absorption tower through the first throttling valve.

[0007] The regenerated amino-functional ionic solution is discharged through the outlet at the bottom of the desorption tower, transported by the second solution pump and stored in the third storage tank. The amino-functional ionic solution in the third storage tank is then transported to the second spray device through the third throttle valve. The second spray device sprays the amino-functional ionic solution onto the packing layer, where it undergoes gas-liquid two-phase contact with the introduced CO2 to absorb CO2, generating CO2-amino-functional ionic solution and releasing heat. The CO2-amino-functional ionic solution is discharged from the outlet at the bottom of the absorption tower, transported by the first solution pump and stored in the second storage tank. The CO2-amino-functional ionic solution in the second storage tank is then transported to the first spray device through the second throttle valve for CO2 desorption and amino-functional ionic solution regeneration.

[0008] The CO2 non-azeotropic mixture flowing out from the fourth throttle valve enters the lower part of the absorption tower, absorbs heat and becomes saturated or supersaturated steam. After entering the packing layer, some of the CO2 is absorbed by the amino-functional ionic solution, and the remaining CO2 non-azeotropic mixture is discharged through the exhaust port at the top of the absorption tower. After being compressed by the second compressor, it becomes a high-temperature and high-pressure CO2 non-azeotropic mixture. After being cooled by the condenser to a subcooled state, it becomes a gas-liquid two-phase state after being throttled by the fourth throttle valve. The liquid to be heated is introduced into the cold side of the condenser and heated by the high-temperature and high-pressure CO2 non-azeotropic mixture.

[0009] Furthermore, the amino-functionalized ionic solution is an ionic solution carrying an amino group, including aminoimidazolium, aminoguanidine, and amino acid ionic solutions; the functional amino group reacts with carbon dioxide through a reversible chemical reaction to generate carbamate, and the reaction mechanism is as follows:

[0010] Furthermore, in the amino-functionalized ionic solution, the mass concentration of water is 10% to 40%, and the mass concentration of the amino-functionalized ionic liquid is 60% to 90%.

[0011] Furthermore, in the CO2 non-azeotropic mixture, the non-azeotropic working fluid is a non-azeotropic refrigerant with a glide temperature greater than or equal to 10°C.

[0012] Furthermore, the CO2 non-azeotropic working fluid is any one of carbon dioxide / 1-chloro-3,3,3-trifluoropropene, carbon dioxide / trans-1-chloro-3,3,3-trifluoropropene, carbon dioxide / hexafluorobutene, and carbon dioxide / cis-1,3,3,3-tetrafluoropropene.

[0013] Furthermore, in carbon dioxide / 1-chloro-3,3,3-trifluoropropene, the mass concentration of carbon dioxide is 55%–80%, and the mass concentration of 1-chloro-3,3,3-trifluoropropene is 20%–45%; in carbon dioxide / trans-1-chloro-3,3,3-trifluoropropene, the mass concentration of carbon dioxide is 55%–80%, and the mass concentration of trans-1-chloro-3,3,3-trifluoropropene is 20%–45%; in carbon dioxide / hexafluorobutene, the mass concentration of carbon dioxide is 40%–80%, and the mass concentration of hexafluorobutene is 20%–60%; in carbon dioxide / cis-1,3,3,3-tetrafluoropropene, the mass concentration of carbon dioxide is 45%–75%, and the mass concentration of cis-1,3,3,3-tetrafluoropropene is 25%–55%.

[0014] Furthermore, the heat source of the waste heat medium includes photovoltaic waste heat, geothermal heat, domestic wastewater waste heat, and industrial waste heat. The temperature of photovoltaic waste heat is 25-70℃, the temperature of geothermal heat is 10-25℃, the temperature of domestic wastewater waste heat is 20-40℃, and the temperature of industrial waste heat is 30-500℃.

[0015] Furthermore, the condenser employs counter-current heat exchange.

[0016] The system adjustment method of the present invention includes: when the load on the source side is unstable, controlling the CO2 stored in the first storage tank to enter the absorption tower by adjusting the first throttle valve, and controlling the regenerated amino functional ion solution stored in the third storage tank to enter the absorption tower by adjusting the third throttle valve; in the absorption tower, the amino functional ion solution reacts with CO2 gas, absorbs CO2 and releases heat, continuously supplies a low-temperature heat source, and ensures the stable operation of the high-temperature heat pump cycle.

[0017] Furthermore, when it is necessary to adjust the concentration of the working fluid components to adapt to different operating conditions, the flow rate of CO2 gas entering the absorption tower is adjusted by adjusting the opening of the first throttle valve, and the pressure inside the absorption tower is adjusted by adjusting the pressure control system of the absorption tower or adjusting the compression pressure of the first compressor, thereby adjusting the component concentration of the CO2 non-azeotropic working fluid.

[0018] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0019] (1) This invention achieves efficient storage and release of waste heat by coupling the absorption and desorption cycle of CO2 using an amino-functionalized ionic solution with a CO2 non-azeotropic mixed working fluid heat pump cycle. This effectively solves the problem of fluctuation on the source-load side and improves the stability and energy efficiency of the system under different load conditions. Simultaneously, the amino-functionalized ionic solution has higher heat storage efficiency and better heat storage performance, meeting the needs of high-temperature applications. The system can maintain efficient and stable operation even in environments with large load fluctuations, effectively improving overall energy efficiency and stability.

[0020] (2) The amino-functional ionic solution in the absorption tower selectively absorbs the CO2 non-azeotropic working fluid. By adjusting the pressure and CO2 flow rate in the absorption tower, the component concentration of the CO2 non-azeotropic working fluid can be flexibly adjusted according to system requirements in the high-temperature heat pump cycle. This flexible component concentration adjustment not only improves the temperature matching of the working fluid during the heat exchange process and reduces irreversible losses, but also ensures that the working fluid maintains optimal thermodynamic properties under different operating conditions.

[0021] In summary, this invention can improve the efficiency and stability of waste heat utilization, fully utilize the potential of waste heat resources, and improve the system's adaptability under different operating conditions, ensuring its efficient operation under various conditions, and has broad application prospects. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a system that couples an ion solution thermal storage cycle and a high-temperature heat pump cycle, as provided in an embodiment of the present invention. Detailed Implementation

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Appendix Figure 1 The accompanying figure labels are as follows:

[0025] 1. Heat exchanger coil inlet; 2. Heat exchanger coil outlet; 3. Desorption tower; 4. First compressor; 5. First storage tank; 6. First throttle valve; 7. Absorption tower; 8. First solution pump; 9. Second storage tank; 10. Second throttle valve; 11. Second solution pump; 12. Third storage tank; 13. Third throttle valve; 14. Second compressor; 15. Condenser; 16. Fourth throttle valve; 17. Condenser cold side inlet; 18. Condenser cold side outlet.

[0026] like Figure 1 As shown, this embodiment of the invention provides a system that couples an ionic solution thermal storage cycle and a high-temperature heat pump cycle. The ionic solution thermal storage cycle uses an amino-functional ionic solution as the working fluid, and the high-temperature heat pump cycle uses a CO2 non-azeotropic mixture as the working fluid.

[0027] The ion solution thermal storage cycle includes a stripping tower 3, a first compressor 4, a first storage tank 5, a first throttling valve 6, an absorption tower 7, a first solution pump 8, a second storage tank 9, a second throttling valve 10, a second solution pump 11, a third storage tank 12, and a third throttling valve 13. The stripping tower 3 is a tower reactor with a first spray device and heat exchange coils, and the absorption tower 7 is a tower reactor with a second spray device and a packing layer. The high-temperature heat pump cycle includes an absorption tower 7, a second compressor 14, a condenser 15, and a fourth throttling valve 16.

[0028] The waste heat medium is introduced into the heat exchange coil inlet 1 and discharged from the heat exchange coil outlet 2. The liquid outlet at the bottom of the absorption tower 7, the first solution pump 8, the second storage tank 9, the second throttle valve 10, and the first spray device are connected in sequence. The liquid outlet at the bottom of the desorption tower 3, the second solution pump 11, the third storage tank 12, the third throttle valve 13, and the second spray device are connected in sequence. The exhaust port at the top of the desorption tower 3, the first compressor 4, the first storage tank 5, the first throttle valve 6, and the air inlet at the bottom of the absorption tower 7 are connected in sequence. The exhaust port at the top of the absorption tower 7, the second compressor 14, the condenser 15, the fourth throttle valve 16, and the liquid inlet at the bottom of the absorption tower 7 are connected in sequence. The liquid to be heated is introduced into the cold side inlet 17 of the condenser and discharged from the cold side outlet 18 of the condenser. The condenser 15 adopts counter-current heat exchange.

[0029] The analysis and regeneration processes in analytic tower 3:

[0030] In the stripping tower 3, a waste heat medium is introduced as a low-temperature heat source to heat the CO2-amino functional ionic solution through a heat exchange coil. Specifically, the CO2-amino functional ionic solution sprayed from the first spray device located at the top of the stripping tower 3 exchanges heat with the waste heat medium flowing through the heat exchange coil. The CO2-amino functional ionic solution absorbs heat, resulting in the desorption of CO2 and the regeneration of the amino functional ionic solution. The desorbed low-temperature, low-pressure CO2 vapor is discharged through the exhaust port at the top of the stripping tower 3 and enters the first compressor 4, while the regenerated amino functional ionic solution is discharged through the liquid outlet at the bottom of the stripping tower 3 to the second solution pump 11.

[0031] The absorption process in absorption tower 7:

[0032] The amino-functionalized ionic solution absorbs CO2 and releases heat. Specifically, a second spray device located at the upper part of the absorber tower 7 sprays the amino-functionalized ionic solution onto the packing layer, where it fully contacts the CO2 introduced from the lower part of the absorber tower 7 in a gas-liquid two-phase state, absorbing CO2 and generating CO2-amino-functionalized ionic solution, releasing heat. The CO2 non-azeotropic mixture entering the lower part of the absorber tower 7 absorbs heat and becomes saturated or supersaturated vapor. After entering the packing layer, some of the CO2 is absorbed by the amino-functionalized ionic solution, and the remaining CO2 non-azeotropic mixture is discharged through the exhaust port at the upper part of the absorber tower 7.

[0033] The amino functional ionic solution regenerated by the analytical tower 3 is transported by the second solution pump 11 and stored in the third storage tank 12. Then, the amino functional ionic solution in the third storage tank 12 is transported to the second spray device through the third throttle valve 13, which plays the role of regulating the flow rate.

[0034] The first compressor 4 compresses the desorbed low-temperature, low-pressure CO2 vapor into high-temperature, high-pressure CO2 vapor and stores it in the first storage tank 5. Then, the high-temperature, high-pressure CO2 vapor passes through the first throttle valve 6 and enters the lower part of the absorption tower 7, where it is absorbed by the amino-functional ionic solution, releasing heat. The resulting CO2-amino-functional ionic solution is discharged from the outlet at the lower part of the absorption tower 7 and transported by the first solution pump 8 to the second storage tank 9. The first throttle valve 6 precisely regulates the flow rate and pressure. After the flow rate of the CO2-amino-functional ionic solution is regulated by the second throttle valve 10, it enters the first spray device for CO2 desorption and regeneration of the amino-functional ionic solution, completing the cycle.

[0035] The CO2 non-azeotropic mixture flowing out from the fourth throttle valve 16 in a gas-liquid two-phase state enters the lower part of the absorption tower 7, where it is selectively absorbed by the amino-functionalized ionic solution and releases heat. The CO2 non-azeotropic mixture discharged from the exhaust port at the top of the absorption tower 7 is compressed by the second compressor 14, becoming a high-temperature, high-pressure CO2 non-azeotropic mixture. This mixture is then cooled to a subcooled state by the condenser 15, and after being throttled by the fourth throttle valve 16, it becomes a gas-liquid two-phase state before entering the absorption tower 7 to complete the cycle. The liquid to be heated and the high-temperature, high-pressure CO2 non-azeotropic mixture exchange heat in the condenser 15.

[0036] In this embodiment of the invention, the first solution pump 8 is located at the inlet of the second storage tank 9, and the second solution pump 11 is located at the inlet of the third storage tank 12. This ensures that a high pressure is maintained at the pump inlets, preventing cavitation. Pumping liquid into the storage tanks ensures that the internal pressure of the tanks is maintained within a suitable range, preventing negative pressure. If the pumps are installed at the tank outlet, cavitation may occur when the liquid level in the tank is low. Furthermore, pumps are generally thrust pumps, with better flow propulsion than suction; placing the pump at the tank outlet may result in unstable operation.

[0037] The heat sources for waste heat media include photovoltaic waste heat, geothermal energy, domestic wastewater waste heat, and industrial waste heat. Photovoltaic waste heat has a temperature of 25–70℃, geothermal energy has a temperature of 10–25℃, domestic wastewater waste heat has a temperature of 20–40℃, and industrial waste heat has a temperature of 30–500℃.

[0038] Amino-functional ionic solutions include a series of ionic solutions carrying amino functional groups, such as aminoimidazoles, aminoguanidines, and amino acids. These ionic solutions can be obtained by introducing amino-NH2 onto the cations or anions of the ionic solution.

[0039] The functional amino group reacts with carbon dioxide in a reversible chemical reaction at a molar ratio of 2:1 to form carbamate. The reaction mechanism is as follows:

[0040] In amino-functional ionic solutions, the mass concentration of water is 10%–40%, and the mass concentration of amino-functional ionic liquids is 60%–90%.

[0041] Different types of amino-functionalized ionic solutions can be desorbed under different temperature conditions, thereby achieving the staged utilization of waste heat. In specific applications, based on the temperature characteristics of the waste heat source, an amino-functionalized ionic solution suitable for that temperature range is selected, effectively storing the waste heat and releasing it in a high-temperature heat pump cycle. This not only improves the system's flexibility and adaptability, enabling it to operate over a wider temperature range, but also optimizes the system's energy efficiency in different temperature scenarios. This diverse temperature adaptability allows the invention to adapt to various industrial and commercial applications, significantly enhancing the breadth and depth of waste heat utilization.

[0042] In a CO2 non-azeotropic mixture, the non-azeotropic working medium is a non-azeotropic refrigerant with a large glide temperature, which means that the glide temperature during the evaporation process of the refrigerant is greater than or equal to 10℃.

[0043] The CO2 non-azeotropic working fluid can be any one of the following: CO2 / 1-chloro-3,3,3-trifluoropropene (R1233zd), CO2 / trans-1-chloro-3,3,3-trifluoropropene (R1233zd(E)), CO2 / hexafluorobutene (R1336mzz(Z)), or CO2 / cis-1,3,3,3-tetrafluoropropene (R1224yd(Z)).

[0044] In the carbon dioxide / 1-chloro-3,3,3-trifluoropropene mixture, the mass concentration of carbon dioxide is 55%–80%, the mass concentration of 1-chloro-3,3,3-trifluoropropene is 20%–45%, and the sum of the mass concentrations of the two is 100%.

[0045] In the carbon dioxide / trans-1-chloro-3,3,3-trifluoropropene, the mass concentration of carbon dioxide is 55% to 80%, the mass concentration of trans-1-chloro-3,3,3-trifluoropropene is 20% to 45%, and the sum of the mass concentrations of the two is 100%.

[0046] In the carbon dioxide / hexafluorobutene mixture, the mass concentration of carbon dioxide is 40%–80%, the mass concentration of hexafluorobutene is 20%–60%, and the sum of their mass concentrations is 100%.

[0047] In the carbon dioxide / cis-1,3,3,3-tetrafluoropropylene mixture, the mass concentration of carbon dioxide is 45%–75%, the mass concentration of cis-1,3,3,3-tetrafluoropropylene is 25%–55%, and the sum of the mass concentrations of the two is 100%.

[0048] This invention also provides a method for regulating the system of coupled ion solution thermal storage cycle and high-temperature heat pump cycle described in this invention, including:

[0049] 1) When the source load side load is unstable (e.g., waste heat supply fluctuations or waste heat temperature is not constant), the high-temperature heat pump cycle is maintained by the CO2 and amino functional ionic solution stored in the tank, ensuring the stability of the system heat source temperature, thereby solving the source load side fluctuation problem.

[0050] The specific steps are as follows:

[0051] During periods of waste heat fluctuation, the waste heat medium enters the heat exchange coil of the stripping tower 3 through the heat exchange coil inlet 1 to heat the CO2-amino functional ionic solution, precipitating CO2 and regenerating the amino functional ionic solution. The precipitated CO2 is compressed to a high-pressure state by the first compressor 4 and stored in the first storage tank 5. The regenerated amino functional ionic solution is transported to the third storage tank 12 by the second solution pump 11.

[0052] When the load on the source side decreases or the waste heat is insufficient, the CO2 stored in the first storage tank 5 is controlled to enter the absorption tower 7 by adjusting the first throttle valve 6, and the regenerated amino functional ionic solution stored in the third storage tank 12 is controlled to enter the absorption tower 7 by adjusting the third throttle valve 13. In the absorption tower 7, the amino functional ionic solution reacts with CO2 gas, absorbing CO2 and releasing heat, continuously supplying a low-temperature heat source, and ensuring the stable operation of the high-temperature heat pump cycle.

[0053] 2) When it is necessary to adjust the concentration of the working fluid components to adapt to different operating conditions (e.g., changes in external ambient temperature or changes in working fluid absorption efficiency), the concentration of the CO2 non-azeotropic working fluid components is adjusted by adjusting the pressure and CO2 flow rate in the absorption tower 7.

[0054] The specific steps are as follows:

[0055] When a high-temperature heat pump cycle requires a high concentration of CO2 as the working fluid, the flow rate of CO2 gas entering the absorption tower 7 is increased by increasing the opening of the first throttle valve 6, thereby increasing the CO2 concentration within the absorption tower 7. The pressure within the absorption tower 7 can also be adjusted: by regulating the pressure control system of the absorption tower 7 or increasing the compression pressure of the first compressor 4, the pressure within the absorption tower 7 can be increased. Higher pressure reduces the CO2 absorption rate, decreases the amount of CO2 absorbed by the amino-functionalized ionic solution, allowing more CO2 gas to enter the high-temperature heat pump cycle and increasing its CO2 component concentration.

[0056] When a high-temperature heat pump cycle requires a lower concentration of CO2 as the working fluid, the flow rate of CO2 gas entering the absorption tower 7 is reduced by decreasing the opening of the first throttle valve 6, thereby lowering the CO2 concentration within the absorption tower 7. The pressure within the absorption tower 7 is also reduced by decreasing the compression pressure of the first compressor 4 or by directly adjusting the pressure control system of the absorption tower 7. Lower pressure helps the amino-functionalized ionic solution absorb CO2 more quickly and efficiently, thus reducing the concentration of CO2 in the system.

[0057] This invention creatively combines a CO2 absorption-desorption cycle using an amino-functionalized ionic solution with a high-temperature heat pump cycle using a non-azeotropic CO2 mixture as the working fluid, achieving efficient storage and release of waste heat. This system not only effectively solves the source-load fluctuation problem and significantly improves the system's stability and energy efficiency under different load conditions, but also optimizes temperature matching during heat exchange by adjusting the component concentration of the non-azeotropic CO2 mixture, reducing irreversible losses. The diverse temperature adaptability of the amino-functionalized ionic solution further expands the system's application range, enabling flexible adaptation to waste heat utilization scenarios in different temperature zones. Overall, this invention significantly improves the adaptability, stability, and energy efficiency of heat pump systems, and has broad prospects for industrial and commercial applications.

Claims

1. A method for regulating a system coupling an ionic solution thermal storage cycle and a high-temperature heat pump cycle, characterized in that, The ion solution thermal storage cycle uses an amino-functional ion solution as the circulating working fluid, including a desorption tower (3), a first compressor (4), a first storage tank (5), a first throttle valve (6), an absorption tower (7), a first solution pump (8), a second storage tank (9), a second throttle valve (10), a second solution pump (11), a third storage tank (12), and a third throttle valve (13). The desorption tower (3) is equipped with a first spray device and a heat exchange coil, and the absorption tower (7) is equipped with a second spray device and a packing layer. The high-temperature heat pump cycle uses an amino-functional ion solution as the circulating working fluid. CO 2. A non-azeotropic working fluid is used as the circulating working fluid, including an absorption tower (7), a second compressor (14), a condenser (15), and a fourth throttle valve (16). The first spray device sprays CO The 2-amino functional ionic solution exchanges heat with the waste heat medium flowing through the heat exchange coil. CO 2-Amino functional ionic solutions absorb heat and generate CO Analysis of 2 and regeneration of amino-functionalized ionic solutions; low-temperature and low-pressure analysis of the analyzed solution. CO 2. Steam is discharged through the exhaust port at the top of the analytical tower (3) and compressed into high temperature and high pressure by the first compressor (4). CO 2. Steam is stored in the first storage tank (5), and the high temperature and high pressure in the first storage tank (5) are released through the first throttle valve (6). CO 2. Steam is delivered to the lower part of the absorption tower (7); The regenerated amino-functional ionic solution is discharged through the outlet at the bottom of the analytical tower (3), transported by the second solution pump (11) and stored in the third storage tank (12). The amino-functional ionic solution in the third storage tank (12) is then transported to the second spray device through the third throttle valve (13). The second spray device sprays the amino-functional ionic solution onto the packing layer, where it interacts with the introduced... CO 2. Perform gas-liquid two-phase contact absorption CO 2. Generate CO 2-Amino functional ionic solution and releases heat; CO The 2-amino functional ionic solution is discharged from the outlet at the bottom of the absorption tower (7), transported by the first solution pump (8), and stored in the second storage tank (9). The solution in the second storage tank (9) is then discharged through the second throttle valve (10). CO The 2-amino functional ionic solution is transported to the first spray device for processing. CO Analysis of 2 and regeneration of amino-functionalized ionic solutions; The gas-liquid two-phase state flowing out from the fourth throttle valve (16) CO 2. The non-azeotropic working fluid enters the lower part of the absorption tower (7), absorbs heat and becomes saturated or supersaturated steam. After entering the packing layer, part of it... CO 2 is absorbed by amino-functionalized ionic solutions, and the remaining... CO 2. The non-azeotropic working fluid is discharged through the exhaust port at the top of the absorption tower (7), and after being compressed by the second compressor (14), it becomes a high-temperature and high-pressure mixture. CO 2. The non-azeotropic working fluid is cooled to a subcooled state by condenser (15). CO 2. The non-azeotropic working fluid, after being throttled by the fourth throttle valve (16), becomes a gas-liquid two-phase state; the liquid to be heated is introduced into the cold side of the condenser (15) and subjected to high temperature and high pressure. CO 2. Heating of non-azeotropic working fluids; When the load on the source side is unstable, the amount of fuel stored in the first storage tank (5) is controlled by adjusting the first throttle valve (6). CO 2. The regenerated amino functional ionic solution stored in the third storage tank (12) is controlled to enter the absorption tower (7) by adjusting the third throttle valve (13); in the absorption tower (7), the amino functional ionic solution reacts with... CO 2. Gas reaction, absorption CO 2. It releases heat and continuously supplies low-temperature heat sources to ensure the stable operation of the high-temperature heat pump cycle; When it is necessary to adjust the concentration of the working fluid components to adapt to different operating conditions, the opening degree of the first throttle valve (6) is adjusted to regulate the concentration. CO 2. The flow rate of gas entering the absorption tower (7) is adjusted by regulating the pressure control system of the absorption tower (7) or by adjusting the compression pressure of the first compressor (4) to regulate the pressure inside the absorption tower (7), thereby regulating the flow rate of gas entering the absorption tower (7). CO 2. Component concentrations of non-azeotropic working fluids.

2. The adjustment method according to claim 1, characterized in that, The amino-functionalized ionic solution is an ionic solution carrying an amino group, including aminoimidazolium, aminoguanidine, and amino acid ionic solutions; the functional amino group reacts with carbon dioxide through a reversible chemical reaction to generate carbamate, and the reaction mechanism is as follows: .

3. The adjustment method according to claim 2, characterized in that, In the amino-functional ionic solution, the mass concentration of water is 10%~40%, and the mass concentration of the amino-functional ionic liquid is 60%~90%.

4. The adjustment method according to claim 1, characterized in that, The CO 2. In the non-azeotropic mixture, the non-azeotropic working fluid is a non-azeotropic refrigerant with a glide temperature greater than or equal to 10°C.

5. The adjustment method according to claim 4, characterized in that, The CO 2. The non-azeotropic working fluid is any one of carbon dioxide / 1-chloro-3,3,3-trifluoropropene, carbon dioxide / trans-1-chloro-3,3,3-trifluoropropene, carbon dioxide / hexafluorobutene, or carbon dioxide / cis-1,3,3,3-tetrafluoropropene.

6. The adjustment method according to claim 5, characterized in that, In carbon dioxide / 1-chloro-3,3,3-trifluoropropene, the mass concentration of carbon dioxide is 55%~80% and the mass concentration of 1-chloro-3,3,3-trifluoropropene is 20%~45%; in carbon dioxide / trans-1-chloro-3,3,3-trifluoropropene, the mass concentration of carbon dioxide is 55%~80% and the mass concentration of trans-1-chloro-3,3,3-trifluoropropene is 20%~45%; in carbon dioxide / hexafluorobutene, the mass concentration of carbon dioxide is 40%~80% and the mass concentration of hexafluorobutene is 20%~60%; in carbon dioxide / cis-1,3,3,3-tetrafluoropropene, the mass concentration of carbon dioxide is 45%~75% and the mass concentration of cis-1,3,3,3-tetrafluoropropene is 25%~55%.

7. The adjustment method according to claim 1, characterized in that, The heat sources of the waste heat medium include photovoltaic waste heat, geothermal energy, domestic wastewater waste heat, and industrial waste heat. The temperature of photovoltaic waste heat is 25~70℃, the temperature of geothermal energy is 10~25℃, the temperature of domestic wastewater waste heat is 20~40℃, and the temperature of industrial waste heat is 30~500℃.

8. The adjustment method according to claim 1, characterized in that, The condenser (15) uses counter-current heat exchange.

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