Multi-energy complementary mine dehumidification and air conditioning system based on metal-organic framework materials

Abstract

A multi-energy complementary mine dehumidification and air conditioning system based on metal-organic framework materials includes a dehumidification unit and a waste heat utilization unit, wherein the dehumidification unit includes an evaporative cooler, an air cooler, a solution cooler, a metal-organic framework composite membrane dehumidifier, a heat recovery device, a dilute solution tank, a liquid-liquid heat exchanger, a metal-organic framework composite membrane regenerator, a concentrated solution tank, a solar collector, and a hot water storage tank; the waste heat utilization unit includes a lean-burn gas turbine, first and second metal-organic framework adsorption beds, a gas storage tank, a high-temperature hot water storage tank, a gas storage tank, and a generator. Based on the high porosity and low regeneration temperature characteristics of the metal-organic framework material, the present invention fully utilizes solar energy, flue gas generated by methane combustion after exhaust air purification, and electrical energy to achieve a low-temperature and low-humidity summer mine air conditioning environment in an energy-saving and efficient manner, creating a suitable temperature and humidity environment for mine production and ensuring efficient mine operation while reducing energy consumption and greenhouse gas emissions.

Description

Technical Field

[0001] The invention relates to a multi-energy complementary mine dehumidification and air-conditioning system based on metal organic framework materials, belonging to the technical field of mine dehumidification. Background Art

[0002] High temperature and high humidity in mines not only exacerbate the corrosion of underground equipment and shorten its lifespan, but also seriously affect workers' productivity and physical and mental health. Therefore, a suitable temperature and humidity environment is of great significance to maintaining efficient mine operation.

[0003] At present, common solutions to the high temperature and high humidity problems in mines include traditional air-conditioning dehumidification, solution dehumidification, and membrane-based solution dehumidification. Although these solutions have played a certain role in improving the temperature and humidity environment in mines, they also have obvious defects. For example, traditional air-conditioning dehumidification consumes a lot of energy due to its reliance on dew point temperature; solution dehumidification uses the water vapor partial pressure difference as the driving force for dehumidification, which poses potential health threats and equipment corrosion problems caused by droplet carryover; membrane-based solution dehumidification uses a membrane to separate the solution and air. Although it can avoid the disadvantages of solution dehumidification, ordinary polymer membranes have performance degradation problems caused by pollution and clogging, and the addition of the membrane increases the mass transfer resistance, leaving much room for improvement in dehumidification performance.

[0004] Furthermore, while mine ventilation has a high volume, the current utilization of waste heat from this ventilation is limited by its low methane volume fraction, resulting in a waste of resources. Therefore, research is urgently needed to determine how to create a suitable temperature and humidity environment in mines and improve the utilization of waste heat from this ventilation. Summary of the Invention

[0005] The present invention provides a multi-energy complementary mine dehumidification and air-conditioning system based on metal-organic framework materials. The system can create a suitable temperature and humidity environment for mine production, ensure efficient operation of the mine, improve the dehumidification performance of the equipment and the utilization of the mine's exhaust air and waste heat, reduce energy consumption in the dehumidification process, and reduce greenhouse gas emissions.

[0006] In order to achieve the above-mentioned object, the present invention provides a multi-energy complementary mine dehumidification and air-conditioning system based on metal-organic framework materials, comprising a dehumidification unit and a waste heat utilization unit;

[0007] The dehumidification unit includes an evaporative cooler, an air cooler, a solution cooler, a metal-organic framework composite membrane dehumidifier, a heat recovery device, a dilute solution tank, a liquid-liquid heat exchanger, a metal-organic framework composite membrane regenerator, a concentrated solution tank, a solar collector and a hot water storage tank. One side of the metal-organic framework composite membrane dehumidifier is an air input end, which is connected to the outdoor air through a first fan, and the other side is an air output end. The air output end includes two branches, one branch is connected to the air supply shaft through the air cooler, and the other branch is connected to the input end of the evaporative cooler through the heat recovery device; the solution input end of the metal-organic framework composite membrane dehumidifier is connected to the concentrated solution tank through the solution cooler, the liquid-liquid heat exchanger, the first solution pump, and the first stop valve in sequence, and its solution output end is connected to the input end of the dilute solution tank;

[0008] The bottom water output end of the evaporative cooler is connected to the water input end of the air cooler and the solution cooler respectively, and the top air output end thereof is connected to the atmosphere through the heat recovery device; the sprayer inside the evaporative cooler is connected to the water output end of the solution cooler through the first water pump;

[0009] One side of the metal-organic framework composite membrane regenerator is an air input end, which is connected to the outdoor air through a second fan, and the other side is an air output end directly connected to the outdoor air; the solution input end of the metal-organic framework composite membrane regenerator is connected to the output end of the dilute solution tank through a first solution heater, a second solution heater, a liquid-liquid heat exchanger, a second solution pump, and a second stop valve in sequence, and the solution output end is connected to the input end of the concentrated solution tank;

[0010] The water input end of the second solution heater is connected to the hot water output end of the hot water storage tank through a second water pump, and the water output end of the second solution heater is connected to the return water inlet of the hot water storage tank; the water heating circulation loop of the hot water storage tank is connected to the solar collector;

[0011] The waste heat utilization unit includes a lean-burn gas turbine, a first metal-organic framework adsorption bed, a second metal-organic framework adsorption bed, a gas storage tank, a high-temperature hot water storage tank, a gas storage tank, and a generator;

[0012] The input end of the lean-burn gas turbine is connected to the output end of the gas storage tank, and its output end is connected to the generator. The flue gas output end of the lean-burn gas turbine is connected to the first solution heater and the heat exchange coil in the high-temperature water storage tank through the third fan and the fourth fan respectively; the output end of the generator is connected to the electric heating wire in the high-temperature water storage tank;

[0013] The air input ends of the first metal organic framework adsorption bed and the second metal organic framework adsorption bed are connected to the return air shaft through the fifth fan and the sixth fan respectively; the air output ends thereof are connected to the atmosphere through the first air valve and the second air valve respectively;

[0014] The air output end of the first metal-organic framework adsorption bed is also connected to the air storage tank through a third air valve; the input end of the built-in coil of the first metal-organic framework adsorption bed is connected to the water output end of the high-temperature water storage tank through a third water pump and a third stop valve, and the output end of the built-in coil of the first metal-organic framework adsorption bed is connected to the return water port of the high-temperature water storage tank;

[0015] The air output end of the second metal-organic framework adsorption bed is connected to the air storage tank through a fourth air valve; the input end of the built-in coil of the second metal-organic framework adsorption bed is connected to the water output end of the high-temperature water storage tank through a fourth water pump and a fourth stop valve, and the output end of the built-in coil of the second metal-organic framework adsorption bed is connected to the return water port of the high-temperature water storage tank;

[0016] The third air valve and the fourth air valve are connected in parallel to a pipeline communicating with the input end of the gas storage tank.

[0017] Furthermore, the evaporative cooler is a packed tower; the metal organic framework composite membrane dehumidifier and metal organic framework composite membrane regenerator are flat plate or hollow fiber membrane contactors, and their membranes are mixed matrix membranes composed of organic polymers and metal organic framework materials.

[0018] Furthermore, the hot water storage tank is filled with water and phase change material, and the outer shell of the hot water storage tank is covered with thermal insulation material.

[0019] Furthermore, the first metal-organic framework adsorption bed and the second metal-organic framework adsorption bed are filled with a medium-hydrophilic metal-organic framework material.

[0020] Furthermore, the high-temperature heat storage tank is filled with phase change material, and its outer shell is covered with thermal insulation material; the lean-burn gas turbine is of partition heat recovery type.

[0021] The present invention is provided with a dehumidification unit and a waste heat utilization unit, wherein the dehumidification unit includes an evaporative cooler, an air cooler, a solution cooler, a metal organic framework composite membrane dehumidifier, a heat recovery device, a dilute solution tank, a liquid-liquid heat exchanger, a metal organic framework composite membrane regenerator, a concentrated solution tank, a solar collector and a hot water storage tank; the metal organic framework composite membrane dehumidifier is used to provide low-humidity air, a part of the low-humidity air is used for the evaporative cooler to produce cold water, and the other part is sent to the mine after being cooled by the air cooler to maintain a comfortable temperature and humidity environment; the solution passing through the metal organic framework composite membrane dehumidifier increases in temperature and decreases in concentration due to the absorption of moisture, and becomes a dilute solution; the dilute solution is preheated by the liquid-liquid heat exchanger and heated by the solution heater, and then enters the metal organic framework composite membrane regenerator; after passing through the regenerator, the moisture in the solution is transferred to the air to become a concentrated solution; the concentrated solution is cooled by the solution cooler, and the dehumidification capacity is restored and then sent to the metal organic framework composite membrane dehumidifier again to achieve continuous dehumidification; the waste heat utilization unit includes a lean burn gas turbine, a first metal organic framework adsorption bed, a second ... The machine frame comprises an adsorption bed, a gas storage tank, a high-temperature hot water storage tank, a gas storage tank and a generator. After the mine exhaust air is purified and concentrated after nitrogen adsorption by the metal-organic framework adsorption bed, it enters the lean-burn gas turbine. The lean-burn gas turbine discharges high-temperature flue gas and drives the generator to generate electricity. The dilute solution after passing through the metal-organic framework composite membrane dehumidifier is first heated by the heat generated by the solar collector and then heated again by the high-temperature flue gas before entering the metal-organic framework composite membrane regenerator. The metal-organic framework material in the metal-organic framework adsorption bed is heated by hot water in the heat exchange coil to restore the ability to adsorb nitrogen and increase the methane concentration in the mine exhaust air. The water in the heat exchange coil in the metal-organic framework adsorption bed is heated by the flue gas generated by the lean-burn gas turbine and electricity. The use of the metal-organic framework composite membrane not only solves the problems of droplet carryover and corrosion that may be caused by solution dehumidification, but also improves the permeability and hydrophilicity of the membrane, improves the dehumidification performance of the membrane, and reduces the dehumidification energy consumption. The use of the metal-organic framework material in the adsorption bed increases the methane concentration in the mine exhaust air and thus improves the waste heat utilization rate of the mine exhaust air, while reducing the regeneration energy consumption compared with traditional adsorption materials. Based on the high porosity and low regeneration temperature characteristics of metal-organic framework materials, the present invention makes full use of solar energy, flue gas generated by the combustion of methane after ventilation purification, and electricity to achieve a low-temperature and low-humidity summer mine air-conditioning environment in an energy-saving and efficient manner. It creates a suitable temperature and humidity environment for mine production, ensures the efficient operation of the mine, and reduces energy consumption and greenhouse gas emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the working principle of the present invention.

[0023] In the figure: 1, evaporative cooler, 2, air cooler, 3, solution cooler, 4, metal organic framework composite membrane dehumidifier, 5, heat recovery device, 6, dilute solution tank, 7, liquid-liquid heat exchanger, 8, metal organic framework composite membrane regenerator, 9, concentrated solution tank, 10, solar collector, 11, hot water storage tank, 12, first fan, 13, first solution pump, 14, first stop valve, 15, first water pump, 16, sprinkler, 17, second fan, 18, first solution heater, 19, second solution heater, 20, second solution pump, 21, second stop valve, 22, second water pump, 23, dilute solution Gas turbine, 24. First metal-organic framework adsorption bed, 25. Second metal-organic framework adsorption bed, 26. Gas storage tank, 27. High-temperature water storage tank, 28. Generator, 29. Third fan, 30. Fourth fan, 31. Electric heating wire, 32. Fifth fan, 33. Sixth fan, 34. First air valve, 35. Second air valve, 36. Third air valve, 37. Third water pump, 38. Third stop valve, 39. Fourth air valve, 40. Fourth water pump, 41. Fourth stop valve. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, a multi-energy complementary mine dehumidification and air-conditioning system based on metal organic framework materials includes a dehumidification unit and a waste heat utilization unit;

[0026] The dehumidification unit includes an evaporative cooler 1, an air cooler 2, a solution cooler 3, a metal-organic framework composite membrane dehumidifier 4, a heat recovery device 5, a dilute solution tank 6, a liquid-liquid heat exchanger 7, a metal-organic framework composite membrane regenerator 8, a concentrated solution tank 9, a solar collector 10 and a hot water storage tank 11. One side of the metal-organic framework composite membrane dehumidifier 4 is an air input end, which is connected to the outdoor air through a first fan 12, and the other side is an air output end. The air output end includes two branches, one branch is connected to the air supply shaft through the air cooler 2, and the other branch is connected to the input end of the evaporative cooler 1 through the heat recovery device 5; the solution input end of the metal-organic framework composite membrane dehumidifier 4 is connected to the concentrated solution tank 9 through the solution cooler 3, the liquid-liquid heat exchanger 7, the first solution pump 13, and the first stop valve 14 in sequence, and its solution output end is connected to the input end of the dilute solution tank 6; the metal-organic framework composite membrane in the metal-organic framework composite membrane dehumidifier 4 separates the dehumidifying solution from the air;

[0027] The bottom water output end of the evaporative cooler 1 is connected to the water input ends of the air cooler 2 and the solution cooler 3 respectively, and the top air output end thereof is connected to the atmosphere through the heat recovery device 5; the water sprayer 16 inside the evaporative cooler 1 is connected to the water output end of the solution cooler 3 through the first water pump 15;

[0028] One side of the metal-organic framework composite membrane regenerator 8 is an air input end, which is connected to the outdoor air through the second fan 17, and the other side is an air output end directly connected to the outdoor air; the solution input end of the metal-organic framework composite membrane regenerator 8 is connected to the output end of the dilute solution tank 6 through the first solution heater 18, the second solution heater 19, the liquid-liquid heat exchanger 7, the second solution pump 20, and the second stop valve 21 in sequence, and its solution output end is connected to the input end of the concentrated solution tank 9;

[0029] The water input end of the second solution heater 19 is connected to the hot water output end of the hot water storage tank 11 through the second water pump 22, and its water output end is connected to the return water inlet of the hot water storage tank 11; the water heating circulation loop of the hot water storage tank 11 is connected to the solar collector 10;

[0030] The waste heat utilization unit includes a lean-burn gas turbine 23, a first metal-organic framework adsorption bed 24, a second metal-organic framework adsorption bed 25, a gas storage tank 26, a high-temperature hot water storage tank 27 and a generator 28;

[0031] The input end of the lean-burn gas turbine 23 is connected to the output end of the gas storage tank 26, and its output end is connected to the generator 28. The flue gas output end of the lean-burn gas turbine 23 is connected to the first solution heater 18 and the heat exchange coil in the high-temperature water storage tank 27 through the third fan 29 and the fourth fan 30 respectively; the output end of the generator 28 is connected to the electric heating wire 31 in the high-temperature water storage tank 27;

[0032] The air input ends of the first metal-organic framework adsorption bed 24 and the second metal-organic framework adsorption bed 25 are connected to the return air shaft through the fifth fan 32 and the sixth fan 33 respectively; their air output ends are connected to the atmosphere through the first air valve 34 and the second air valve 35 respectively; the air output end of the first metal-organic framework adsorption bed 24 is also connected to the air storage tank 26 through the third air valve 36; the input end of the built-in coil of the first metal-organic framework adsorption bed 24 is connected to the water output end of the high-temperature hot water storage tank 27 through the third water pump 37 and the third stop valve 38, and the output end of the built-in coil of the adsorption bed is connected to the return water port of the high-temperature hot water storage tank 27;

[0033] The air output end of the second metal-organic framework adsorption bed 25 is connected to the air storage tank 26 via a fourth air valve 39; the internal coil input end of the second metal-organic framework adsorption bed 25 is connected to the water output end of the high-temperature water storage tank 27 via a fourth water pump 40 and a fourth shut-off valve 41; and the output end of the internal coil of the adsorption bed is connected to the return water inlet of the high-temperature water storage tank 27.

[0034] The third air valve 36 and the fourth air valve 39 are connected in parallel to a pipeline communicating with the input end of the gas storage tank 26 .

[0035] As a preferred embodiment, the evaporative cooler 1 is a packed tower; the metal-organic framework composite membrane dehumidifier 4 and the metal-organic framework composite membrane regenerator 8 are flat-plate membrane contactors, and their membranes are mixed matrix membranes composed of PVDF and MIL-101 (Cr); the first to sixth fans all use variable frequency fans.

[0036] In order to further improve the heat storage capacity and stability of the hot water storage tank 11, the hot water storage tank 11 is filled with water and phase change material. The phase change material is a phase change microcapsule filled with paraffin, and its phase change temperature is 50~55°C; the outer shell of the hot water storage tank 11 is covered with insulation material.

[0037] As a preferred embodiment, the first metal organic framework adsorption bed 24 and the second metal organic framework adsorption bed 25 are filled with metal organic framework material MIL-100 (Cr), and the nitrogen in MIL-100 (Cr) preferentially adsorbs methane, with high selectivity and adsorption capacity;

[0038] As a preferred embodiment, the high-temperature water storage tank 27 is filled with phase change material with a phase change temperature of approximately 90°C. The water inside the high-temperature water storage tank 27 is heated to 85-90°C by flue gas and electric heating wire, and its outer shell is covered with insulation material; the lean-burn gas turbine 23 is a partition heat recovery type.

[0039] As a preferred embodiment, the solution in the dilute solution tank 6 and the concentrated solution tank 9 is a lithium bromide aqueous solution with a concentration of about 50%.

[0040] Working process:

[0041] In summer, the outdoor air is hot and humid, and the heat and humidity load in the mine is large. The outdoor air needs to be cooled and dehumidified before being sent into the mine to maintain a comfortable working environment. Figure 1As shown, during operation, the first stop valve 14 and the second stop valve 21 are opened, the first solution pump 13, the second solution pump 20, the first fan 12 and the second fan 17 are started, and the concentrated solution in the concentrated solution tank 9 is pre-cooled by the liquid-liquid heat exchanger 7 and then sent to the solution cooler 3 for further cooling by the cold water from the evaporative cooler 1. At this time, the solution has a strong moisture absorption capacity and a low surface equivalent vapor pressure. The solution enters the metal-organic framework composite membrane dehumidifier 4. Under the action of the first fan 12, the outdoor high-temperature and humid air also enters the metal-organic framework composite membrane dehumidifier 4. In the metal-organic framework composite membrane dehumidifier 4, the solution and the air are indirectly in contact through the metal-organic framework composite membrane. Since the water vapor partial pressure in the air is higher than the equivalent water vapor partial pressure on the surface of the solution, the water molecules in the air pass through the composite membrane and enter the solution, and the humidity of the air drops to below 8g / kg dry. A portion of the dry air is pre-cooled by the heat recovery device 5 and then sent to the evaporative cooler 1. The water sprayed onto the filler by the sprayer 16 in the evaporative cooler 1 evaporates and absorbs heat to produce cold water. In this process, the humidity of the dry air entering the evaporative cooler 1 increases and the temperature decreases. After passing through the heat recovery device 5, it is discharged into the atmosphere. The cold water produced by the evaporative cooler 1 first passes through the air cooler 2 and then through the solution cooler 3 and returns to the sprayer 16 of the evaporative cooler 1 under the action of the first water pump 15; another portion of the dry air generated by the metal organic framework composite membrane dehumidifier 4 enters the air cooler 2. In the air cooler 2, the dry air is cooled by the cold water from the evaporative cooler 1. After the air becomes in a low-temperature and low-humidity state, it is sent to the air supply shaft to maintain a suitable temperature and humidity in the mine.

[0042] The solution in the metal-organic framework composite membrane dehumidifier 4 absorbs water and becomes a dilute solution, which enters the dilute solution tank 6. The solution in the dilute solution tank 6 is preheated by the liquid-liquid heat exchanger 7, and is heated step by step by the second solution heater 19 and the first solution heater 18. Then, it enters the metal-organic framework composite membrane regenerator 8 under the action of the second solution pump 20. At this time, the solution temperature is as high as 60°C or above, and the equivalent vapor pressure on the surface of the solution is much higher than the water vapor partial pressure in the air. In the metal-organic framework composite membrane regenerator 8, the moisture in the dilute solution enters the air through the composite membrane and is discharged into the atmosphere under the action of the second fan 17. The solution concentration is increased and restored to the initial concentration before being sent to the concentrated solution. In the tank 9, the solution in the concentrated solution tank 9 is pre-cooled by the first stop valve 14 through the liquid-liquid heat exchanger 7 under the action of the first solution pump 13 and sent to the solution cooler 3. After being further cooled by the cold water from the evaporative cooler 1, it enters the metal-organic framework composite membrane dehumidifier 4 to realize a new round of dehumidification, and the dehumidification cycle is repeated continuously. In the above process, in the second solution heater 19, the dilute solution and the hot water from the hot water storage tank 11 are subjected to countercurrent heat exchange. The dilute solution is heated to about 45°C and then sent to the first solution heater 18. In the first solution heater 18, the dilute solution is further heated to above 60°C by the high-temperature flue gas generated by the lean-burn gas turbine 23.

[0043] When the first metal-organic framework adsorption bed 24 is in operation, the first air valve 34 and the fourth air valve 39 are closed, and the third air valve 36, the fifth fan 32, the third fan 29 and the fourth fan 30 are opened. Under the action of the fifth fan 32, the exhaust air in the return air shaft enters the first metal-organic framework adsorption bed 24. A large amount of nitrogen in the exhaust air is adsorbed by the metal-organic framework material, and the volume fraction of methane increases to more than 2%. The concentrated exhaust air is sent to the gas storage tank 26. The exhaust air treated in the gas storage tank 26 enters the lean-burn gas turbine 23 to drive the generator 28 to generate electricity. Part of the flue gas generated by the combustion of methane in the lean-burn gas turbine 23 is sent to the first solution heater 18 via the third fan 29 to heat the dilute solution, and the other part of the flue gas is sent to the coil in the high-temperature hot water storage tank 27 via the fourth fan 30 to heat water. The lean-burn gas turbine 23 drives the generator 28 to generate electricity to power the electric heating wire 31 in the high-temperature hot water storage tank 27, and the surplus electricity is supplied to other electrical equipment in the system.

[0044] After the first metal-organic framework adsorption bed 24 is saturated with adsorption, the third air valve 36 and the second air valve 35 are closed, the fourth air valve 39 and the sixth fan 33 are opened, and the second metal-organic framework adsorption bed 25 is activated for adsorption. At the same time, the first air valve 34, the third stop valve 38 and the third water pump 37 are opened, and the hot water in the high-temperature water storage tank 27 flows to the built-in coil of the first metal-organic framework adsorption bed 24. The nitrogen desorbed by the metal-organic framework material is discharged through the first air valve 34. After the first metal-organic framework adsorption bed 24 recovers its adsorption capacity, the first air valve 34, the third stop valve 38, the third water pump 37 and the fifth fan 32 are closed; after the second metal-organic framework adsorption bed 25 adsorbs, the nitrogen is discharged through the first air valve 34. After saturation, the fourth air valve 39 is closed, the third air valve 36 is opened, and the first metal-organic framework adsorption bed 24 is activated for adsorption. At the same time, the second air valve 35, the fourth stop valve 41 and the fourth water pump 40 are opened, and the hot water in the high-temperature water storage tank 27 flows to the built-in coil of the second metal-organic framework adsorption bed 25. The nitrogen desorbed by the metal-organic framework material is discharged through the second air valve 35. After the second metal-organic framework adsorption bed 25 recovers its adsorption capacity, the second air valve 35, the fourth stop valve 41, the fourth water pump 40 and the sixth fan 33 are closed. The first metal-organic framework adsorption bed 24 and the second metal-organic framework adsorption bed 25 are switched in a cycle to continuously generate concentrated exhaust air.

Claims

1. A multi-energy complementary mine dehumidification and air conditioning system based on metal organic framework materials, characterized in that: Including dehumidification unit and waste heat utilization unit; The dehumidification unit comprises an evaporative cooler (1), an air cooler (2), a solution cooler (3), a metal organic framework composite membrane dehumidifier (4), a heat recovery device (5), a dilute solution tank (6), a liquid-liquid heat exchanger (7), a metal organic framework composite membrane regenerator (8), a concentrated solution tank (9), a solar collector (10) and a hot water storage tank (11). One side of the metal organic framework composite membrane dehumidifier (4) is an air input end, which is connected to the outdoor air through a first fan (12), and the other side is an air output end. The air output end comprises two branches, one branch is connected to the air supply shaft through the air cooler (2), and the other branch is connected to the input end of the evaporative cooler (1) through the heat recovery device (5); the solution input end of the metal organic framework composite membrane dehumidifier (4) is connected to the concentrated solution tank (9) through the solution cooler (3), the liquid-liquid heat exchanger (7), the first solution pump (13), and the first stop valve (14) in sequence, and its solution output end is connected to the input end of the dilute solution tank (6); The bottom water output end of the evaporative cooler (1) is connected to the water input ends of the air cooler (2) and the solution cooler (3), respectively, and the top air output end thereof is connected to the atmosphere via the heat recovery device (5); the sprayer (16) inside the evaporative cooler (1) is connected to the water output end of the solution cooler (3) via the first water pump (15); One side of the metal organic framework composite membrane regenerator (8) is an air input end, which is connected to the outdoor air through the second fan (17), and the other side is an air output end; the solution input end of the metal organic framework composite membrane regenerator (8) is connected to the output end of the dilute solution tank (6) through the first solution heater (18), the second solution heater (19), the liquid-liquid heat exchanger (7), the second solution pump (20), and the second stop valve (21) in sequence, and the solution output end is connected to the input end of the concentrated solution tank (9); The water input end of the second solution heater (19) is connected to the hot water output end of the hot water storage tank (11) through the second water pump (22), and the water output end of the second solution heater (19) is connected to the water return port of the hot water storage tank (11); the water heating circulation loop of the hot water storage tank (11) is connected to the solar collector (10); The waste heat utilization unit includes a lean-burn gas turbine (23), a first metal-organic framework adsorption bed (24), a second metal-organic framework adsorption bed (25), a gas storage tank (26), a high-temperature hot water storage tank (27), and a generator (28); The input end of the lean-burn gas turbine (23) is connected to the output end of the gas storage tank (26), and the output end thereof is connected to the generator (28). The flue gas output end of the lean-burn gas turbine (23) is connected to the first solution heater (18) and the heat exchange coil in the high-temperature water storage tank (27) through the third fan (29) and the fourth fan (30), respectively; the output end of the generator (28) is connected to the electric heating wire (31) in the high-temperature water storage tank (27); The air input ends of the first metal organic framework adsorption bed (24) and the second metal organic framework adsorption bed (25) are respectively connected to the return air shaft through the fifth fan (32) and the sixth fan (33); and the air output ends thereof are respectively connected to the atmosphere through the first air valve (34) and the second air valve (35); The air output end of the first metal-organic framework adsorption bed (24) is also connected to the air storage tank (26) via a third air valve (36); the input end of the built-in coil of the first metal-organic framework adsorption bed (24) is connected to the water output end of the high-temperature water storage tank (27) via a third water pump (37) and a third stop valve (38); and the output end of the built-in coil of the first metal-organic framework adsorption bed (24) is connected to the return water port of the high-temperature water storage tank (27); The air output end of the second metal-organic framework adsorption bed (25) is connected to the air storage tank (26) through a fourth air valve (39); the built-in coil input end of the second metal-organic framework adsorption bed (25) is connected to the water output end of the high-temperature water storage tank (27) through a fourth water pump (40) and a fourth stop valve (41); the output end of the built-in coil of the second metal-organic framework adsorption bed (25) is connected to the return water port of the high-temperature water storage tank (27); The third air valve (36) and the fourth air valve (39) are connected in parallel to a pipeline communicating with the input end of the gas storage tank (26).

2. The multi-energy complementary mine dehumidification and air conditioning system based on metal organic framework materials according to claim 1 is characterized in that: The evaporative cooler (1) is a packed tower; the metal organic framework composite membrane dehumidifier (4) and the metal organic framework composite membrane regenerator (8) are both flat plate type or hollow fiber type membrane contactors, and their membranes are mixed matrix membranes composed of organic polymers and metal organic framework materials.

3. The multi-energy complementary mine dehumidification and air conditioning system based on metal organic framework materials according to claim 1 or 2, characterized in that: The hot water storage tank (11) is filled with water and phase change material, and the outer shell of the hot water storage tank (11) is covered with thermal insulation material.

4. The multi-energy complementary mine dehumidification and air conditioning system based on metal organic framework materials according to claim 1 is characterized in that: The first metal-organic framework adsorption bed (24) and the second metal-organic framework adsorption bed (25) are filled with a medium-hydrophilic metal-organic framework material.

5. The multi-energy complementary mine dehumidification and air conditioning system based on metal organic framework materials according to claim 1 is characterized in that: The high-temperature water storage tank (27) is filled with phase change material, and its outer shell is covered with heat insulation material; the lean-burn gas turbine (23) is of a partition heat recovery type.

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