Submersible / sensible heat separation type dehumidification, refrigeration and desalination system driven by mine geothermal heat pump

Abstract

The invention discloses a submersible / sensible heat separation type dehumidification, refrigeration and fresh water preparation system driven by a mine geothermal heat pump. The system comprises a jet type heat pump system, a mine air dehumidification system, an absorption jet refrigeration system and a fresh water collection system. The jet type heat pump comprises a heat pump low-temperature evaporator, a compressor, a heat pump ejector, a heat pump condenser and a heat pump high-temperature evaporator; the heat pump low-temperature evaporator, the compressor, the heat pump ejector and the heat pump condenser are sequentially closed to form a first circulation loop, and the heat pump high-temperature evaporator, the heat pump ejector and the heat pump condenser are sequentially closed to form a second circulation loop. The mine air dehumidification system comprises a solution generator, a solution dehumidification absorber and a solution dehumidification condenser; the absorption jet refrigeration system comprises an absorption refrigeration generator and an absorption refrigeration condenser. According to the system, the high-temperature and high-humidity working environment of the deep part of the mine is improved, mine air submersible / sensible heat separated dehumidification is realized, and the dehumidification energy consumption is reduced; gradient utilization of heat energy is achieved, and low-power-consumption fresh water preparation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of low-grade thermal energy utilization, and in particular to a latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump. Background Art

[0002] Coal is an important part of the national economy and the main energy resource in my country. It accounts for 70% of primary energy production and consumption. Underground mining produces a large amount of mine water. my country's coal mines produce about 6.88 billion m3 of mine water each year. 3 . Underground mines directly discharge mine water after lifting it to the surface, causing serious waste of water resources and heat energy resources. my country's coal mining has gradually advanced rapidly from shallow to deep. Under the complex environment of "high temperature and high permeability" in the deep underground, an abnormally high temperature and high humidity working environment has been formed in the deep mines. The underground working environment is becoming increasingly harsh, and local thermal disaster high temperature mines will gradually develop into regional thermal disaster high temperature. At present, there are more than 100 mines with a mining depth of more than 1,000 meters in my country. The ambient temperature of the underground mining face is as high as 40°C, and the relative humidity is close to 100%. The high temperature and high humidity environment greatly endangers the physical and mental health of the workers at the mining face, causing the underground workers to be distracted. This not only leads to low mine production efficiency, but also easily induces mine production accidents, thus forming mine thermal disasters. At the same time, most coal mining areas are important recharge and regulation areas for groundwater resources. Fresh water resources are scarce, leading to a tense situation of fresh water supply in the mine area. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump.

[0004] The present invention is realized by the following technical scheme: a latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump, comprising a jet heat pump system, a mine air dehumidification system, an absorption jet refrigeration system and a fresh water collection system; the jet heat pump comprises a heat pump low-temperature evaporator, a compressor, a heat pump ejector, a heat pump condenser and a heat pump high-temperature evaporator; the heat pump low-temperature evaporator, the compressor, the heat pump ejector and the heat pump condenser are closed in sequence to form a first circulation loop, and the heat pump high-temperature evaporator, the heat pump ejector and the heat pump condenser are closed in sequence to form a second circulation loop; the mine air dehumidification system comprises a solution generator The high-temperature air deep in the mine enters the heat pump high-temperature evaporator and absorbs the sensible heat of the air before entering the solution dehumidification absorber. The circulating working fluid of the heat pump low-temperature evaporator absorbs the heat of the mine water pool before entering the compressor. The absorption jet refrigeration system includes an absorption refrigeration generator and an absorption refrigeration condenser. The absorption refrigeration generator is connected to the heat pump condenser and the solution generator respectively. The solution generator is connected to the heat pump condenser. The absorption refrigeration condenser is coupled to the solution dehumidification condenser. The solution generator is connected to the fresh water collection system.

[0005] It also includes a heat pump high-pressure throttle valve and a heat pump low-pressure throttle valve; the first outlet of the heat pump condenser is connected to the heat pump low-temperature evaporator through the heat pump low-pressure throttle valve, and the heat pump high-temperature evaporator is connected to the connecting pipeline between the first outlet of the heat pump condenser and the heat pump low-pressure throttle valve through the heat pump high-pressure throttle valve; the high-temperature refrigerant at the first outlet of the heat pump condenser is divided into two paths, one path enters the heat pump high-temperature evaporator through the heat pump high-pressure throttle valve, and the other path enters the heat pump low-temperature evaporator through the heat pump low-pressure throttle valve.

[0006] The heat pump low-temperature evaporator is coupled to the mine water pool; the first inlet of the heat pump ejector is connected to the compressor, and the second inlet of the heat pump ejector is connected to the heat pump high-temperature evaporator; the high-temperature and high-pressure refrigerant at the compressor outlet is ejected to the refrigerant at the heat pump high-pressure condenser outlet through the heat pump ejector.

[0007] The mine air dehumidification system also includes a solution dehumidification system regenerator, a solution dehumidification system booster pump and a solution dehumidification system throttle valve; the inlet of the solution dehumidification system booster pump is connected to the outlet of the solution dehumidification absorber, the outlet of the solution dehumidification system booster pump is connected to the first inlet of the solution dehumidification system regenerator, the first outlet of the solution dehumidification system regenerator is connected to the first inlet of the solution generator, and the first outlet of the solution generator is connected to the second inlet of the solution dehumidification system regenerator; the inlet of the solution dehumidification system throttle valve is connected to the second outlet of the solution dehumidification system regenerator, the outlet of the solution dehumidification system throttle valve is connected to the solution inlet of the solution dehumidification condenser, and the solution outlet of the solution dehumidification condenser is connected to the inlet of the solution dehumidification absorber.

[0008] The absorption jet refrigeration system also includes cooling water, an absorption refrigeration condenser, an absorption refrigeration refrigerant heat exchanger, an absorption refrigeration evaporator, an absorption refrigeration absorber, an absorption refrigeration solution heat exchanger and an absorption refrigeration ejector; the first inlet of the heat pump condenser is connected to the outlet of the heat pump ejector, the second inlet of the heat pump condenser is connected to the first outlet of the absorption refrigeration generator, and the first inlet of the absorption refrigeration generator is connected to the first outlet of the solution generator; the second outlet of the absorption refrigeration generator is connected to the inlet of the absorption refrigeration ejector, and the outlet of the absorption refrigeration ejector is connected to the first inlet of the absorption refrigeration condenser; the cooling water inlet of the solution dehumidification condenser is connected to the first outlet of the absorption refrigeration condenser, the cooling water outlet of the solution dehumidification condenser is connected to the inlet of the cooling water, and the outlet of the cooling water is connected to the second inlet of the absorption refrigeration condenser; the first inlet of the absorption refrigeration refrigerant heat exchanger is connected to the absorption The second outlet of the refrigeration condenser is connected, the first outlet of the absorption refrigeration refrigerant heat regenerator is connected to the absorption refrigeration evaporator, the absorption refrigeration evaporator is coupled to the cold user and provides cold capacity for it; the outlet of the absorption refrigeration evaporator is connected to the first inlet of the absorption refrigeration absorber, the second inlet of the absorption refrigeration refrigerant heat regenerator is connected to the connecting pipeline between the absorption refrigeration evaporator and the absorption refrigeration absorber, and the second outlet of the absorption refrigeration refrigerant heat regenerator is connected to the connecting pipeline between the absorption refrigeration generator and the absorption refrigeration ejector; the outlet of the absorption refrigeration absorber is connected to the first inlet of the absorption refrigeration solution heat regenerator, the first outlet of the absorption refrigeration solution heat regenerator is connected to the second inlet of the absorption refrigeration generator, the second inlet of the absorption refrigeration solution heat regenerator is connected to the third outlet of the absorption refrigeration generator, and the second outlet of the absorption refrigeration solution heat regenerator is connected to the second inlet of the absorption refrigeration absorber.

[0009] The absorption jet refrigeration system also includes a first absorption refrigeration throttle valve, a second absorption refrigeration throttle valve and an absorption refrigeration booster pump; the first absorption refrigeration throttle valve is installed on the connecting pipeline between the first outlet of the absorption refrigeration refrigerant regenerator and the absorption refrigeration evaporator; the second absorption refrigeration throttle valve is installed on the connecting pipeline between the second outlet of the absorption refrigeration solution regenerator and the second inlet of the absorption refrigeration absorber; the absorption refrigeration booster pump is installed on the connecting pipeline between the outlet of the absorption refrigeration absorber and the first inlet of the absorption refrigeration solution regenerator.

[0010] A lithium bromide concentrated solution is arranged in the absorption refrigeration absorber, and the water vapor at the outlet of the absorption refrigeration evaporator is divided into two paths, one path enters the absorption refrigeration absorber through the absorption refrigeration refrigerant heat regenerator to be absorbed by the lithium bromide concentrated solution, and the other path is used as an ejection fluid, which is ejected by the high-temperature and high-pressure water vapor at the outlet of the absorption refrigeration generator through the absorption refrigeration refrigerant heat regenerator and enters the absorption refrigeration condenser through the absorption refrigeration ejector.

[0011] The fresh water collection system includes a fresh water condenser, a fresh water tank and a vacuum pump. One end of the fresh water condenser is connected to the second outlet of the solution generator, and the other end of the fresh water condenser is connected to the fresh water tank. The vacuum pump is installed on the connecting pipeline between the fresh water condenser and the solution generator.

[0012] A valve is installed on the connecting pipeline between the pipeline between the fresh water condenser and the solution generator and the vacuum pump.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) The system integrates a jet heat pump system, a mine air dehumidification system, an absorption jet refrigeration system, and a fresh water collection system. It uses the geothermal energy of mine water to improve the high temperature and high humidity working environment deep in the mine and alleviate the shortage of fresh water resources in the mining area.

[0015] (2) The jet heat pump system is coupled with the mine air dehumidification system to realize the mine air latent / sensible heat separation dehumidification, thereby reducing the dehumidification energy consumption.

[0016] (3) The high-temperature hot water produced by the jet heat pump first drives the mine air dehumidification system, and then drives the absorption jet refrigeration system to achieve cascade utilization of thermal energy.

[0017] (4) The mine air dehumidification system adopts a vacuum generation mode, which reduces the driving force of generation and realizes low-power consumption fresh water production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0019] The meanings of the reference numerals in the figure are as follows: 1. Mine water pool; 2. Heat pump low-temperature evaporator; 3. Compressor; 4. Heat pump ejector; 5. Heat pump condenser; 6. Heat pump high-pressure throttle valve; 7. Heat pump high-temperature evaporator; 8. High-temperature air; 9. Heat pump low-pressure throttle valve; 10. Solution generator; 11. Valve; 12. Vacuum pump; 13. Fresh water condenser; 14. Fresh water tank; 15. Solution dehumidification system regenerator; 16. Solution dehumidification system booster pump; 17. Solution dehumidification system Throttle valve; 18, solution dehumidification absorber; 19, solution dehumidification condenser; 20, cooling water; 21, absorption refrigeration condenser; 22, absorption refrigeration refrigerant regenerator; 23, first absorption refrigeration throttle valve; 24, absorption refrigeration evaporator; 25, cold user; 26, absorption refrigeration absorber; 27, absorption refrigeration booster pump; 28, second absorption refrigeration throttle valve; 29, absorption refrigeration solution regenerator; 30, absorption refrigeration generator; 31, absorption refrigeration ejector. DETAILED DESCRIPTION

[0020] The content of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Example

[0022] See also Figure 1 , which is a latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump, including a jet heat pump system, a mine air dehumidification system, an absorption jet refrigeration system and a fresh water collection system; the jet heat pump includes a heat pump low-temperature evaporator 2, a compressor 3, a heat pump ejector 4, a heat pump condenser 5 and a heat pump high-temperature evaporator 7; the heat pump low-temperature evaporator 2, the compressor 3, the heat pump ejector 4, and the heat pump condenser 5 are closed in sequence to form a first circulation loop, and the heat pump high-temperature evaporator 7, the heat pump ejector 4, and the heat pump condenser 5 are closed in sequence to form a second circulation loop; the mine air dehumidification system includes a solution generator 10, a solution dehumidification absorber 18 and solution dehumidification condenser 19; high-temperature air 8 deep in the mine enters the heat pump high-temperature evaporator 7 and absorbs the sensible heat of the air before entering the solution dehumidification absorber 18, and the circulating working fluid of the heat pump low-temperature evaporator 2 absorbs the heat of the mine water pool 1 before entering the compressor 3; the absorption jet refrigeration system includes an absorption refrigeration generator 30 and an absorption refrigeration condenser 21, the absorption refrigeration generator 30 is connected to the heat pump condenser 5 and the solution generator 10 respectively, the second inlet of the solution generator 10 is connected to the second outlet of the heat pump condenser 5, the absorption refrigeration condenser 21 is coupled to the solution dehumidification condenser 19, and the solution generator 10 is connected to the fresh water collection system. In this embodiment, the high-temperature hot water produced by the heat pump condenser 5 first enters the solution generator 10, and then enters the absorption refrigeration generator 30, so as to realize the step-by-step utilization of thermal energy.

[0023] It also includes a heat pump high-pressure throttle valve 6 and a heat pump low-pressure throttle valve 9; the first outlet of the heat pump condenser 5 is connected to the heat pump low-temperature evaporator 2 through the heat pump low-pressure throttle valve 9, and the heat pump high-temperature evaporator 7 is connected to the connecting pipeline between the first outlet of the heat pump condenser 5 and the heat pump low-pressure throttle valve 9 through the heat pump high-pressure throttle valve 6; the high-temperature refrigerant at the first outlet of the heat pump condenser 5 is divided into two paths, one path passes through the heat pump high-pressure throttle valve 6 to enter the heat pump high-temperature evaporator 7, and the other path passes through the heat pump low-pressure throttle valve 9 to enter the heat pump low-temperature evaporator 2, so as to realize the extraction of thermal energy of mine water. The high-temperature air 8 deep in the mine first enters the heat pump high-temperature evaporator 7, and then enters the solution dehumidification absorber 18, so as to realize the latent / sensible heat separation dehumidification of the mine air, and reduce the dehumidification energy consumption.

[0024] The heat pump low-temperature evaporator 2 is coupled to the mine water pool 1; the first inlet of the heat pump ejector 4 is connected to the compressor 3, and the second inlet of the heat pump ejector 4 is connected to the heat pump high-temperature evaporator 7; the high-temperature and high-pressure refrigerant at the outlet of the compressor 3 is ejected through the heat pump ejector 4 to the refrigerant at the outlet of the heat pump high-pressure condenser, which realizes the energy fractionation utilization on the one hand, and increases the refrigerant flow of the heat pump condenser 5 on the other hand, thereby improving the refrigeration power.

[0025] The mine air dehumidification system also includes a solution dehumidification system regenerator 15, a solution dehumidification system booster pump 16 and a solution dehumidification system throttle valve 17; the inlet of the solution dehumidification system booster pump 16 is connected to the outlet of the solution dehumidification absorber 18, the outlet of the solution dehumidification system booster pump 16 is connected to the first inlet of the solution dehumidification system regenerator 15, the first outlet of the solution dehumidification system regenerator 15 is connected to the first inlet of the solution generator 10, and the first outlet of the solution generator 10 is connected to the second inlet of the solution dehumidification system regenerator 15; the inlet of the solution dehumidification system throttle valve 17 is connected to the second outlet of the solution dehumidification system regenerator 15, the outlet of the solution dehumidification system throttle valve 17 is connected to the solution inlet of the solution dehumidification condenser 19, and the solution outlet of the solution dehumidification condenser 19 is connected to the inlet of the solution dehumidification absorber 18.

[0026] The absorption jet refrigeration system also includes cooling water 20, an absorption refrigeration condenser 21, an absorption refrigeration refrigerant heat exchanger 22, an absorption refrigeration evaporator 24, an absorption refrigeration absorber 26, an absorption refrigeration solution heat exchanger 29 and an absorption refrigeration ejector 31; the first inlet of the heat pump condenser 5 is connected to the outlet of the heat pump ejector 4, the second inlet of the heat pump condenser 5 is connected to the first outlet of the absorption refrigeration generator 30, and the first inlet of the absorption refrigeration generator 30 is connected to the first outlet of the solution generator 10; the second outlet of the absorption refrigeration generator 30 is connected to the inlet of the absorption refrigeration ejector 31, and the outlet of the absorption refrigeration ejector 31 is connected to the first inlet of the absorption refrigeration condenser 21; the cooling water inlet of the solution dehumidification condenser 19 is connected to the first outlet of the absorption refrigeration condenser 21, the cooling water 20 outlet of the solution dehumidification condenser 19 is connected to the inlet of the cooling water 20, and the outlet of the cooling water 20 is connected to the second inlet of the absorption refrigeration condenser 21; the first inlet of the absorption refrigeration refrigerant heat exchanger 22 is connected to The second outlet of the absorption refrigeration condenser 21 is connected, the first outlet of the absorption refrigeration refrigerant heat regenerator 22 is connected to the absorption refrigeration evaporator 24, the absorption refrigeration evaporator 24 is coupled to the cold user 25 and provides cold capacity for it; the outlet of the absorption refrigeration evaporator 24 is connected to the first inlet of the absorption refrigeration absorber 26, the second inlet of the absorption refrigeration refrigerant heat regenerator 22 is connected to the connecting pipeline between the absorption refrigeration evaporator 24 and the absorption refrigeration absorber 26, and the second outlet of the absorption refrigeration refrigerant heat regenerator 22 is connected to the connecting pipeline between the absorption refrigeration generator 30 and the absorption refrigeration ejector 31; the outlet of the absorption refrigeration absorber 26 is connected to the first inlet of the absorption refrigeration solution heat regenerator 29, the first outlet of the absorption refrigeration solution heat regenerator 29 is connected to the second inlet of the absorption refrigeration generator 30, the second inlet of the absorption refrigeration solution heat regenerator 29 is connected to the third outlet of the absorption refrigeration generator 30, and the second outlet of the absorption refrigeration solution heat regenerator 29 is connected to the second inlet of the absorption refrigeration absorber 26.

[0027] The absorption jet refrigeration system also includes a first absorption refrigeration throttle valve 23, a second absorption refrigeration throttle valve 28 and an absorption refrigeration booster pump 27; the first absorption refrigeration throttle valve 23 is installed on the connecting pipeline between the first outlet of the absorption refrigeration refrigerant regenerator 22 and the absorption refrigeration evaporator 24; the second absorption refrigeration throttle valve 28 is installed on the connecting pipeline between the second outlet of the absorption refrigeration solution regenerator 29 and the second inlet of the absorption refrigeration absorber 26; the absorption refrigeration booster pump 27 is installed on the connecting pipeline between the outlet of the absorption refrigeration absorber 26 and the first inlet of the absorption refrigeration solution regenerator 29.

[0028] The absorption refrigeration absorber 26 is provided with a lithium bromide concentrated solution. The water vapor at the outlet of the absorption refrigeration evaporator 24 is divided into two paths. One path enters the absorption refrigeration absorber 26 through the absorption refrigeration refrigerant heat exchanger 22 and is absorbed by the lithium bromide concentrated solution. The other path is used as an ejection fluid and is ejected by the high-temperature and high-pressure water vapor (working fluid) at the outlet of the absorption refrigeration generator 30 through the absorption refrigeration refrigerant heat exchanger 22, and enters the absorption refrigeration condenser 21 through the absorption refrigeration ejector 31. The introduction of the absorption refrigeration ejector 31 increases the refrigerant flow of the absorption refrigeration condenser 21 and the absorption refrigeration evaporator 24, and the system performance is improved.

[0029] The fresh water collection system includes a fresh water condenser 13, a fresh water tank 14 and a vacuum pump 12. One end of the fresh water condenser 13 is connected to the second outlet of the solution generator 10, and the other end of the fresh water condenser 13 is connected to the fresh water tank 14. The vacuum pump 12 is installed on the connecting pipeline between the fresh water condenser 13 and the solution generator 10. The moisture in the high-temperature air 8 of the mine is absorbed by the solution dehumidification absorber 18. The solution dehumidification absorber 18 and the solution generator 10 realize heat recovery and solution circulation regeneration through the solution dehumidification system regenerator 15. The solution generator 10 is connected to the vacuum pump 12 to realize the vacuum generation of the solution generator 10, which reduces the driving force of the generation. The evaporated water vapor enters the fresh water tank 14 through the fresh water condenser 13 to realize the production of fresh water.

[0030] A valve 11 is installed on the connecting pipeline between the fresh water condenser 13 and the solution generator 10 and the vacuum pump 12 .

[0031] The working process of this embodiment is:

[0032] The jet heat pump system uses R245fa as the circulating working fluid. R245fa absorbs the heat from the mine water in the mine water pool 1 in the heat pump low-temperature evaporator 2, enters the compressor 3, and the compressed high-temperature and high-pressure R245fa steam enters the heat pump condenser 5 to release heat. The high-temperature refrigerant at the outlet of the heat pump condenser 5 is divided into two paths. One path passes through the heat pump high-pressure throttle valve 6 and then enters the heat pump high-temperature evaporator 7 to provide cooling capacity for removing the sensible heat of the mine air; the other path passes through the heat pump low-pressure throttle valve 9 and then enters the heat pump low-temperature evaporator 2 to extract the thermal energy of the mine water. The high-temperature and high-pressure refrigerant at the outlet of the compressor 3 is ejected by the heat pump ejector 4 to the outlet of the heat pump high-temperature evaporator 7. On the one hand, it realizes the energy quality utilization, and on the other hand, it increases the refrigerant flow of the heat pump condenser 5, and the refrigeration power is improved. The high-temperature hot water produced by the heat pump condenser 5 first enters the solution generator 10. The solution generator 10 is connected to the vacuum pump 12 to realize the vacuum generation of the solution generator 10, reducing the driving force of the generation. The evaporated water vapor enters the fresh water tank 14 through the fresh water condenser 13 to realize the production of fresh water. The high-temperature and high-pressure LiCl concentrated solution generated by the solution generator 10 exchanges heat with the low-temperature LiCl dilute solution after pressurization from the solution dehumidification absorber 18 in the solution dehumidification system regenerator 15, and then enters the solution dehumidification absorber 18 after being depressurized by the solution dehumidification system throttle valve 17. The high-temperature air 8 of the mine first enters the heat pump high-temperature evaporator 7 to remove the sensible heat in the mine air, and then enters the solution dehumidification absorber 18. The moisture in the high-temperature air 8 of the mine is absorbed by the solution dehumidification absorber 18, realizing the latent / sensible heat separation dehumidification of the mine air, reducing the dehumidification energy consumption. The high-temperature hot water at the outlet of the solution generator 10 enters the absorption refrigeration generator 30 again, heats the LiBr solution to generate water vapor, and uses the absorption refrigeration ejector 31 as a working fluid to draw the low-pressure water vapor heated by the absorption refrigeration refrigerant regenerator 22 at the outlet of the absorption refrigeration evaporator 24, and then enters the absorption refrigeration condenser 21 after merging, and the refrigerant vapor condenses into liquid water. Then, it enters the absorption refrigeration evaporator 24 through the absorption refrigeration throttle valve, and the liquid evaporates rapidly under low pressure and absorbs the heat of the surrounding environment, thereby generating a refrigeration effect, and the produced chilled water provides cold capacity for the cold user 25. Another part of the low-temperature and low-pressure steam at the outlet of the absorption refrigeration evaporator 24 directly enters the absorption refrigeration absorber 26, is absorbed by the LiBr concentrated solution in the absorption refrigeration absorber 26, and generates a recirculated LiBr dilute solution, which enters the absorption refrigeration solution regenerator 29 through the boosting effect of the absorption refrigeration booster pump 27, and enters the absorption refrigeration generator 30 after indirect heat exchange with the LiBr concentrated solution. The lithium bromide concentrated solution generated in the generator enters the solution regenerator, and after indirect heat exchange with the lithium bromide dilute solution, enters the absorption refrigeration absorber 26 through the absorption refrigeration throttle valve to complete the LiBr solution circulation. The function of the absorption refrigeration solution regenerator 29 is to recover the heat of the high-temperature LiBr concentrated solution generated in the absorption refrigeration generator 30.

[0033] This embodiment is aimed at the fields of industrial waste heat, solar energy, geothermal energy, biomass energy, etc., and realizes refrigeration and desalination through the coupling of the jet heat pump system, the mine air dehumidification system, the absorption jet refrigeration system, and the fresh water collection system, thereby reducing the moisture content of the mine air and improving the mine working environment. Using low-grade mine water geothermal energy as a low-temperature heat source, a jet high-temperature heat pump system is used to produce high-temperature hot water. The produced high-temperature hot water first drives the LiCl absorption dehumidification system, and then drives the LiBr refrigeration system to realize the cascade utilization of thermal energy. The system has the advantages of simple and compact structure, significant energy-saving effect, stable and reliable operation, and convenient control.

[0034] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention should be included in the patent scope of this case.

Claims

1. A latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump, characterized in that: It includes a jet heat pump system, a mine air dehumidification system, an absorption jet refrigeration system and a fresh water collection system; the jet heat pump includes a heat pump low-temperature evaporator, a compressor, a heat pump ejector, a heat pump condenser and a heat pump high-temperature evaporator; The heat pump low-temperature evaporator, compressor, heat pump ejector, and heat pump condenser are closed in sequence to form a first circulation loop, and the heat pump high-temperature evaporator, heat pump ejector, and heat pump condenser are closed in sequence to form a second circulation loop; the mine air dehumidification system includes a solution generator, a solution dehumidification absorber, and a solution dehumidification condenser; the high-temperature air deep in the mine enters the heat pump high-temperature evaporator and absorbs the sensible heat of the air before entering the solution dehumidification absorber, and the circulating working fluid of the heat pump low-temperature evaporator absorbs the heat of the mine water pool before entering the compressor; the absorption injection refrigeration system includes an absorption refrigeration generator and an absorption refrigeration condenser, the absorption refrigeration generator is connected to the heat pump condenser and the solution generator respectively, the solution generator is connected to the heat pump condenser, the absorption refrigeration condenser is coupled to the solution dehumidification condenser, and the solution generator is connected to the fresh water collection system.

2. The latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump according to claim 1 is characterized in that: It also includes a heat pump high-pressure throttle valve and a heat pump low-pressure throttle valve; the first outlet of the heat pump condenser is connected to the heat pump low-temperature evaporator through the heat pump low-pressure throttle valve, and the heat pump high-temperature evaporator is connected to the connecting pipeline between the first outlet of the heat pump condenser and the heat pump low-pressure throttle valve through the heat pump high-pressure throttle valve; the high-temperature refrigerant at the first outlet of the heat pump condenser is divided into two paths, one path enters the heat pump high-temperature evaporator through the heat pump high-pressure throttle valve, and the other path enters the heat pump low-temperature evaporator through the heat pump low-pressure throttle valve.

3. The latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump according to claim 1 is characterized in that: The heat pump low-temperature evaporator is coupled to the mine water pool; the first inlet of the heat pump ejector is connected to the compressor, and the second inlet of the heat pump ejector is connected to the heat pump high-temperature evaporator; the high-temperature and high-pressure refrigerant at the compressor outlet is ejected to the refrigerant at the heat pump high-pressure condenser outlet through the heat pump ejector.

4. The latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump according to claim 1 is characterized in that: The mine air dehumidification system also includes a solution dehumidification system regenerator, a solution dehumidification system booster pump and a solution dehumidification system throttle valve; the inlet of the solution dehumidification system booster pump is connected to the outlet of the solution dehumidification absorber, the outlet of the solution dehumidification system booster pump is connected to the first inlet of the solution dehumidification system regenerator, the first outlet of the solution dehumidification system regenerator is connected to the first inlet of the solution generator, and the first outlet of the solution generator is connected to the second inlet of the solution dehumidification system regenerator; The inlet of the solution dehumidification system throttle valve is connected to the second outlet of the solution dehumidification system regenerator, the outlet of the solution dehumidification system throttle valve is connected to the solution inlet of the solution dehumidification condenser, and the solution outlet of the solution dehumidification condenser is connected to the inlet of the solution dehumidification absorber.

5. The latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump according to claim 1 is characterized in that: The absorption jet refrigeration system also includes cooling water, an absorption refrigeration condenser, an absorption refrigeration refrigerant heat exchanger, an absorption refrigeration evaporator, an absorption refrigeration absorber, an absorption refrigeration solution heat exchanger and an absorption refrigeration ejector; the first inlet of the heat pump condenser is connected to the outlet of the heat pump ejector, the second inlet of the heat pump condenser is connected to the first outlet of the absorption refrigeration generator, and the first inlet of the absorption refrigeration generator is connected to the first outlet of the solution generator; the second outlet of the absorption refrigeration generator is connected to the inlet of the absorption refrigeration ejector, and the outlet of the absorption refrigeration ejector is connected to the first inlet of the absorption refrigeration condenser; the cooling water inlet of the solution dehumidification condenser is connected to the first outlet of the absorption refrigeration condenser, the cooling water outlet of the solution dehumidification condenser is connected to the inlet of the cooling water, and the outlet of the cooling water is connected to the second inlet of the absorption refrigeration condenser; the first inlet of the absorption refrigeration refrigerant heat exchanger is connected to the absorption The second outlet of the refrigeration condenser is connected, the first outlet of the absorption refrigeration refrigerant heat regenerator is connected to the absorption refrigeration evaporator, the absorption refrigeration evaporator is coupled to the cold user and provides cold capacity for it; the outlet of the absorption refrigeration evaporator is connected to the first inlet of the absorption refrigeration absorber, the second inlet of the absorption refrigeration refrigerant heat regenerator is connected to the connecting pipeline between the absorption refrigeration evaporator and the absorption refrigeration absorber, and the second outlet of the absorption refrigeration refrigerant heat regenerator is connected to the connecting pipeline between the absorption refrigeration generator and the absorption refrigeration ejector; the outlet of the absorption refrigeration absorber is connected to the first inlet of the absorption refrigeration solution heat regenerator, the first outlet of the absorption refrigeration solution heat regenerator is connected to the second inlet of the absorption refrigeration generator, the second inlet of the absorption refrigeration solution heat regenerator is connected to the third outlet of the absorption refrigeration generator, and the second outlet of the absorption refrigeration solution heat regenerator is connected to the second inlet of the absorption refrigeration absorber.

6. The latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump according to claim 5 is characterized by: The absorption jet refrigeration system also includes a first absorption refrigeration throttle valve, a second absorption refrigeration throttle valve and an absorption refrigeration booster pump; the first absorption refrigeration throttle valve is installed on the connecting pipeline between the first outlet of the absorption refrigeration refrigerant regenerator and the absorption refrigeration evaporator; the second absorption refrigeration throttle valve is installed on the connecting pipeline between the second outlet of the absorption refrigeration solution regenerator and the second inlet of the absorption refrigeration absorber; the absorption refrigeration booster pump is installed on the connecting pipeline between the outlet of the absorption refrigeration absorber and the first inlet of the absorption refrigeration solution regenerator.

7. The latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump according to claim 5 is characterized by: A lithium bromide concentrated solution is arranged in the absorption refrigeration absorber, and the water vapor at the outlet of the absorption refrigeration evaporator is divided into two paths, one path enters the absorption refrigeration absorber through the absorption refrigeration refrigerant heat regenerator to be absorbed by the lithium bromide concentrated solution, and the other path is used as an ejection fluid, which is ejected by the high-temperature and high-pressure water vapor at the outlet of the absorption refrigeration generator through the absorption refrigeration refrigerant heat regenerator and enters the absorption refrigeration condenser through the absorption refrigeration ejector.

8. The latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump according to claim 1 is characterized by: The fresh water collection system includes a fresh water condenser, a fresh water tank and a vacuum pump. One end of the fresh water condenser is connected to the second outlet of the solution generator, and the other end of the fresh water condenser is connected to the fresh water tank. The vacuum pump is installed on the connecting pipeline between the fresh water condenser and the solution generator.

9. The latent / sensible heat separation dehumidification refrigeration and desalination system driven by a mine geothermal heat pump according to claim 8, characterized in that: A valve is installed on the connecting pipeline between the pipeline between the fresh water condenser and the solution generator and the vacuum pump.

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