Organic heat carrier furnace

Abstract

The utility model relates to an organic heat carrier furnace, which adopts the technologies of preheating fuel oil, recovering waste heat of a micro heat-conducting oil furnace and cooling by an absorption refrigerator, is beneficial to sufficient combustion of fuel oil of the organic heat carrier furnace and efficient recovery of waste heat of flue gas, effectively avoids low-temperature corrosion of the flue gas, realizes combined supply of cold and heat, and is flexible and convenient to operate and adjust. The novel combined cycle operation system of the organic heat carrier furnace is formed, the problem that waste heat of the organic heat carrier furnace is difficult to recycle is solved, and the combined cycle operation system has good economic and social significance in implementation and popularization.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of boiler, and particularly relates to an organic heat carrier furnace adopting high-temperature side heat conducting oil furnace and micro heat conducting oil furnace technology. BACKGROUND

[0002] The fuel oil heat conducting oil furnace is a special boiler taking fuel oil as fuel and taking organic heat carrier, i.e., heat conducting oil, as working medium, and the heat conducting oil is heated by high-temperature flue gas generated by burning of the fuel oil, and the heat conducting oil provides required heat for heat using equipment after temperature rise, and the flue gas generated after fuel burning is discharged through a chimney, and the temperature is generally about 230 DEG C, and some even as high as 300 DEG C, which not only wastes heat, but also causes thermal pollution to the environment.

[0003] Most of the fuel oil heat conducting oil furnaces do not recover waste heat or only recover part of flue gas waste heat by adding an air preheater, and the fuel oil liquid is not preheated. Some processes are provided with waste heat recovery devices with steam generators such as heat pipe boilers, such as ZL200420027889.4 which provides a heat conducting oil furnace tail gas waste heat recovery device with a steam generator, and the technology can reduce the flue gas discharge temperature of the heat conducting oil furnace to about 160 DEG C and recover a certain amount of steam. The preheating of the fuel oil helps to improve the complete combustion of the fuel oil.

[0004] However, if the steam generated by the waste heat recovery process is not needed by the heat conducting oil furnace using unit, or the steam load changes, the common phenomenon of steam generator excess steam venting occurs, and the use of such technology is greatly limited, and only the air preheater can be added to recover part of the flue gas waste heat. In order to avoid low-temperature corrosion of the air preheater, the flue gas discharge temperature of the boiler is usually above 160 DEG C, and the overall thermal efficiency of the boiler is still low, which does not meet the energy saving and environmental protection requirements.

[0005] Therefore, how to reasonably recover and utilize the flue gas waste heat of the fuel oil heat conducting oil furnace, reduce the flue gas discharge temperature, avoid low-temperature corrosion, and improve the overall thermal efficiency of the heat conducting oil furnace has become a research hotspot in the field. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the defects of the prior art, adopting micro heat conducting oil furnace technology, realizing full combustion of oil fuel, efficient recovery of flue gas waste heat, effectively avoiding low-temperature corrosion of flue gas to the oil gas heat exchanger, and achieving the purpose of energy saving and consumption reduction.

[0007] The utility model aims at solving the defects of the prior art, adopting micro heat conducting oil furnace technology, realizing full combustion of oil fuel, efficient recovery of flue gas waste heat, effectively avoiding low-temperature corrosion of flue gas to the oil gas heat exchanger, and achieving the purpose of energy saving and consumption reduction.

[0008] An organic heat carrier furnace is characterized by comprising a high-temperature side heat conducting oil furnace and a low-temperature side micro heat conducting oil furnace,

[0009] The high-temperature side thermal oil heater includes a thermal oil heater body 1, a burner 2, a hot oil pump 7, a heat-using device 3, an oil-gas separator 5, a filter 6, and connecting pipelines. The thermal oil flows sequentially through the pipelines connected to the hot oil pump 7, the thermal oil heater body 1, the heat-using device 3, the oil-gas separator 5, and the filter 6, returning to the hot oil pump 7. The high-temperature side thermal oil heater is equipped with a high-level expansion tank 4 and a low-level oil storage tank 8. The gas separated from the oil-gas separator 5 enters the high-level expansion tank 4, and the high-level expansion tank 4 is connected to the low-level oil storage tank 8 through an overflow pipe.

[0010] The low-temperature side micro thermal oil heater includes a heat storage oil tank 11, a micro thermal oil pump 12, an oil-gas heater 13, a fuel oil heater 17, and their connecting pipes.

[0011] The oil-gas heater 13 is arranged on the flue 9 of the high-temperature side thermal oil furnace. The high-temperature flue gas in the flue 9 is discharged after being cooled by the oil-gas heater 13. The thermal oil drawn from the heat storage oil tank 11 absorbs the heat of the flue gas in the flue 9 through the micro thermal oil pump 12 and the oil-gas heater 13, and is sent to the fuel oil heater 17 to heat the fuel oil sent from the fuel oil tank 15 and the fuel oil pump 16. The heated fuel oil is sent to the burner 2 of the high-temperature side thermal oil furnace and mixed with the air sent by the blower 10 for combustion, thereby forming an organic heat carrier furnace with a combined circulation operation mode of the high-temperature side thermal oil furnace and the low-temperature side micro thermal oil furnace.

[0012] The low-level oil storage tank 8 and the heat storage oil tank 11 can be combined into one unit.

[0013] The oil-gas heater 13 and the flue gas are indirectly heated. The hot air heated by the oil-gas heater 13 is sent into the thermal oil furnace 1 as combustion air.

[0014] The heat exchange tubes of the oil-gas heater 13 can be plain tubes, finned tubes, serpentine tubes, or spiral grooved tubes.

[0015] The oil-gas heater 13 can be a shell-and-tube heat exchanger, a plate heat exchanger, or other types of heat exchangers.

[0016] By controlling the oil inlet temperature of the oil-gas heater 13 (e.g., above 90℃), low-temperature corrosion of the oil-gas heater 13 can be effectively avoided. Under the premise of avoiding condensation, the purpose of maximizing the utilization of flue gas waste heat can be achieved, enabling the thermal oil furnace to operate economically and with high thermal efficiency, thereby achieving the goal of energy saving and consumption reduction.

[0017] The low-temperature heat utilization cycle of the heat transfer oil in the heat storage oil tank 11 is formed by the following process: the heat transfer oil from the oil gas heater 13 is sent to the generator 20 to heat the concentrated solution of the refrigerant pair, and then returned to the heat storage oil tank 11 through the oil return pipeline; the heat transfer oil in the heat storage oil tank 11 is pressurized by the micro heat transfer oil pump 12, and then returned to the oil gas heater 13.

[0018] An absorption refrigerator is provided.

[0019] The absorption refrigerator comprises a generator 20, a condenser 24, a throttling valve F9, an evaporator 25, an absorber 22, and a solution pump 18.

[0020] The heat transfer oil from the oil gas heater 13 is sent to the generator 20 to heat the concentrated solution of the refrigerant pair, and then returned to the heat storage oil tank 11 through the oil return pipeline; the heat transfer oil in the heat storage oil tank 11 is pressurized by the micro heat transfer oil pump 12, and then returned to the oil gas heater 13, thereby forming the low-temperature heat utilization cycle of the heat transfer oil in the heat storage oil tank 11.

[0021] The concentrated solution of the refrigerant pair formed in the absorber 22 is sent to the generator 20 by the solution pump 18, and heated by the heat transfer oil to generate high-temperature gaseous refrigerant 23; the high-temperature gaseous refrigerant 23 is sent to the evaporator 25 through the condenser 24 and the throttling valve F10, absorbs the heat of the cooling medium sent by the cooling unit 28, and evaporates to generate low-temperature gaseous refrigerant 26 which is returned to the absorber 22; the low-temperature gaseous refrigerant 26 contacts with the dilute solution of the refrigerant pair from the generator 20 sent by the throttling valve F9 to form the concentrated solution of the refrigerant pair; the concentrated solution of the refrigerant pair in the absorber 22 is returned to the generator 20 by the solution pump 18, thereby forming the refrigerant cycle of the absorption refrigerator.

[0022] The cooling medium from the cooling unit 28 is pressurized by the cooling medium pressurizer 29, and then sent to the evaporator 25 to absorb the cold energy released by the liquid refrigerant in the evaporator 25; the cooling medium which absorbs the cold energy and has a reduced temperature is returned to the cooling unit 28 to provide cooling; or the cooling medium from the cooling unit 28 enters the evaporator 25 to absorb the cold energy released by the liquid refrigerant in the evaporator 25; the cooling medium which absorbs the cold energy and has a reduced temperature is pressurized by the cooling medium pressurizer 29, and then returned to the cooling unit 28 to provide cooling, thereby forming the cooling medium cycle of the cooling medium which is cooled and then provides cooling to the cooling unit 28.

[0023] The cooling unit 28 can have various types, such as an office or a working site.

[0024] The cooling medium of the condenser 24 and the absorber 22 adopts air, water, sodium chloride water liquid or glycol water liquid, etc., the cooling medium 30 passing through the condenser 24 cools the high-temperature gaseous refrigerant 23, absorbs the heat of the high-temperature gaseous refrigerant 23, and the formed condenser outlet cooling medium 32 is discharged, and the high-temperature gaseous refrigerant 23 is condensed to form a liquid refrigerant and is sent to the evaporator 25,

[0025] The absorber 22 absorbs the low-temperature gaseous refrigerant 26 from the throttling valve F9 to the refrigerant pair dilute solution, forms a refrigerant pair concentrated solution, and removes the released heat by the cooling medium 30, and the formed generator outlet cooling medium 31 is discharged.

[0026] The absorption refrigeration device selects a corresponding absorption refrigeration device refrigerant pair, including but not limited to ammonia-water, ammonia-sodium thiocyanate solution, the refrigerant pair (dimethyl ether-ion liquid working medium) provided by CN202210567342.6, the refrigerant pair (R134a-DMETG solution) provided by CN202211615323.2, or the refrigerant pair (ammonia-ion liquid working medium) provided by CN202310535508.0.

[0027] The solution pump 18 includes a liquid circulating pump driven by electricity or a bubble pump in natural circulation, wherein the bubble pump substantially adopts a high difference between the generator 20 and the absorber 22 and the buoyancy of bubbles in the liquid lifting pipe to drive the solution from the absorber 22 to the generator 20.

[0028] The cooling medium 30 of the condenser 24 is water or air, and preferably water.

[0029] The cooling medium 30 of the absorber 22 is water or air, and preferably water.

[0030] When the cooling medium is gas, the cooling medium booster 29 is a fan, and when the cooling medium is water or solution, the cooling medium booster 29 is a liquid circulating pump.

[0031] The unexplained facilities in the organic heat carrier furnace refer to or are matched according to reliable and mature technologies in the known organic heat carrier furnace.

[0032] Compared with the prior art, the utility model has the advantages that:

[0033] 1. Compared with the prior art, the organic heat carrier furnace adds a micro heat conducting oil furnace system on the basis of the traditional heat conducting oil furnace system, forms a combined organic heat carrier furnace combined cycle operation system, realizes internal circulation efficient heat utilization of flue gas waste heat by the micro heat conducting oil furnace system, effectively avoids low temperature corrosion of the oil gas heater, the flue gas emission temperature can reach about 130 DEG C, and meets the energy saving and environmental protection requirements;

[0034] 2. Compared with the prior art, the organic heat carrier furnace of the utility model utilizes the micro heat conducting oil furnace to drive the absorption type refrigerator, realizes cooling while high temperature heating of the heat conducting oil furnace, replaces part or all of the cooling function of the original compression refrigerating unit, and forms a cold and heat combined supply system;

[0035] 3. Compared with the prior art, the novel organic heat carrier furnace is flexible and convenient to operate, can utilize the heat storage oil tank as a heat storage equipment, and can cope with system load changes;

[0036] 4. Compared with the prior art, the organic heat carrier furnace adopts fuel oil preheating technology, is helpful to ignition and full combustion of the fuel oil, and comprehensively improves the overall heat efficiency of the organic heat carrier. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a structure schematic view of an organic heat carrier furnace of the utility model.

[0038] Figure 1 In the figure, 1 is a heat conducting oil furnace body, 2 is a burner, 3 is a heat using equipment, 4 is a high expansion tank, 5 is an oil gas separator, 6 is a filter, 7 is a hot oil pump, 8 is a low position oil storage tank, 9 is a flue, 10 is a blower, 11 is a heat storage oil tank, 12 is a micro heat conducting oil pump, 13 is an oil gas heater, 14 is an air preheater outside the furnace, 15 is a fuel oil tank, 16 is a fuel oil pump, 17 is a fuel oil heater, 18 is a solution pump, 19 is a concentrated solution pipeline, 20 is a generator, 21 is a dilute solution pipeline, 22 is an absorber, 23 is a high temperature gaseous refrigerant, 24 is a condenser, 25 is an evaporator, 26 is a low temperature gaseous refrigerant, 27 is a cold carrier medium pipeline, 28 is a cold using unit, 29 is a cold carrier medium booster, 30 is a cooling medium, 31 is a generator outlet cooling medium, 32 is a condenser outlet cooling medium, F9 is a throttle valve, and F10 is an expansion valve. DETAILED DESCRIPTION

[0039] The utility model will be further described in detail below in combination with the drawings and specific embodiments. Figure 1

[0040] Embodiment 1:

[0041] ​An organic heat carrier furnace, which comprises a high-temperature side heat conducting oil furnace and a low-temperature side micro heat conducting oil furnace,

[0042] The high-temperature side heat conducting oil furnace comprises a heat conducting oil furnace body 1, a burner 2, a heat oil pump 7, a heat using equipment 3, an oil gas separator 5, a filter 6 and connecting pipelines, heat conducting oil is connected in sequence by the connecting pipelines of the heat oil pump 7, the heat conducting oil furnace body 1, the heat using equipment 3, the oil gas separator 5, the filter 6 and the heat oil pump 7, the high-temperature side heat conducting oil furnace is provided with a high-position expansion tank 4 and a low-position oil storage tank 8, the separated gas in the oil gas separator 5 enters the high-position expansion tank 4, the high-position expansion tank 4 is connected with the low-position oil storage tank 8 through an overflow pipe,

[0043] The low-temperature side micro heat conducting oil furnace comprises a heat accumulating oil tank 11, a micro heat conducting oil pump 12, an oil gas heater 13, a fuel oil heater 17 and connecting pipelines thereof,

[0044] The oil gas heater 13 is arranged on a flue 9 of the high-temperature side heat conducting oil furnace, flue gas with high temperature in the flue 9 is discharged after its temperature is reduced by the oil gas heater 13, heat conducting oil drawn from the heat accumulating oil tank 11 absorbs heat of the flue gas in the flue 9 through the micro heat conducting oil pump 12 and the oil gas heater 13, and is sent to the fuel oil heater 17 to heat fuel oil sent from a fuel oil tank 15 and a fuel oil pump 16, the fuel oil with increased temperature is sent to the burner 2 of the high-temperature side heat conducting oil furnace to be combusted with air sent from a blower 10, thereby forming an organic heat carrier furnace in a combined cycle operation mode of the high-temperature side heat conducting oil furnace and the low-temperature side micro heat conducting oil furnace. The burner 2 of the high-temperature side heat conducting oil furnace uses coal, oil or gas as fuel.

[0045] The low-position oil storage tank 8 and the heat accumulating oil tank 11 can be combined into one.

[0046] The oil gas heater 13 and the flue gas adopt an indirect heat exchange mode, hot air heated by the oil gas heater 13 is sent to the heat conducting oil furnace 1 to be used as combustion air.

[0047] The heat exchange pipe of the oil gas heater 13 can adopt a light pipe, a finned pipe, a serpentine pipe or a spiral groove pipe.

[0048] The oil gas heater 13 can be a tube-shell type heat exchanger, a plate type heat exchanger or other type heat exchanger.

[0049] Controlling the oil temperature (for example, above 90℃) of the oil gas heater 13 can effectively avoid low-temperature corrosion of the oil gas heater 13, and under the premise of avoiding dewing, the purpose of maximum utilization of waste heat of flue gas is achieved, so that the heat conducting oil furnace can be operated economically and with high heat efficiency, and the purpose of energy saving and consumption reduction is achieved.

[0050] An external air preheater 14 is provided: the heat transfer oil drawn from the heat storage oil tank 11 absorbs the heat of the flue gas in the flue 9 through the micro heat transfer oil pump 12 and the oil-gas heater 13, and is sent to the external air preheater 14 to heat the air sent by the blower 10, and then returns to the heat storage oil tank 11. The air sent by the blower 10 is heated by the external air preheater 14 and then sent to the burner 2 of the high-temperature side heat transfer oil furnace as combustion air.

[0051] It is equipped with an absorption chiller:

[0052] The absorption chiller includes a generator 20, a condenser 24, a throttling valve F9, an evaporator 25, an absorber 22, and a solution pump 18.

[0053] The heat transfer oil from the oil-gas heater 13 is sent to the generator 20 to heat the refrigerant to the concentrated solution, and then returns to the heat storage oil tank 11 through the return oil pipeline. The heat transfer oil in the heat storage oil tank 11 is pressurized by the micro heat transfer oil pump 12 and then returns to the oil-gas heater 13, thus forming a low-temperature heat utilization loop of the heat transfer oil in the heat storage oil tank 11.

[0054] The concentrated refrigerant solution formed in absorber 22 is sent to generator 20 via solution pump 18 and concentrated solution pipeline 19. In generator 20, it is heated by heat transfer oil to produce high-temperature gaseous refrigerant 23. The high-temperature gaseous refrigerant 23 is sent to evaporator 25 via condenser 24 and throttle valve F10 to absorb heat from the cooling medium sent by cooling unit 28. The low-temperature gaseous refrigerant 26 produced by evaporation in evaporator 25 returns to absorber 22 and comes into contact with the dilute refrigerant solution formed in generator 20 via throttle valve F9 and dilute solution pipeline 21 to form concentrated refrigerant solution. The concentrated refrigerant solution in absorber 22 then returns to generator 20 via solution pump 18, thus forming the refrigerant circulation loop of absorption refrigeration system.

[0055] The cooling medium from the cooling unit 28 is pressurized by the cooling medium booster 29 and then sent to the evaporator 25 to absorb the cooling energy released by the evaporation of the liquid refrigerant in the evaporator 25. The cooling medium, which has absorbed the cooling energy and whose temperature has decreased, returns to the cooling unit 28 through the cooling medium pipeline 27 for cooling. Alternatively, the cooling medium from the cooling unit 28 enters the evaporator 25 to absorb the cooling energy released by the evaporation of the liquid refrigerant in the evaporator 25. The cooling medium, which has absorbed the cooling energy and whose temperature has decreased, is pressurized by the cooling medium booster 29 and then returns to the cooling unit 28 through the cooling medium pipeline 27 for cooling. This forms a cooling medium circulation loop in which the cooling medium is charged and then supplied to the cooling unit 28 for cooling.

[0056] The cooling unit 28 can be used in various ways, such as in offices or workplaces.

[0057] The cooling medium of the condenser 24 and the absorber 22 uses air, water, sodium chloride water liquid or glycol water liquid, etc., the cooling medium 30 passing through the condenser 24 cools the high-temperature gaseous refrigerant 23, absorbs the heat of the high-temperature gaseous refrigerant 23, and the formed condenser outlet cooling medium 32 is discharged, and the high-temperature gaseous refrigerant 23 is condensed to form a liquid refrigerant and is sent to the evaporator 25,

[0058] The absorber 22 absorbs the low-temperature gaseous refrigerant 26 from the throttle valve F9 to the refrigerant pair dilute solution, forms a refrigerant pair concentrated solution, and removes the released heat by the cooling medium 30, and the formed generator outlet cooling medium 31 is discharged.

[0059] The absorption refrigeration device selects the ammonia-water refrigerant pair.

[0060] The solution pump 18 uses a liquid circulating pump driven by electricity to send the solution from the absorber 22 to the generator 20.

[0061] The cooling medium 30 of the condenser 24 is water or air, preferably water.

[0062] The cooling medium 30 of the absorber 22 is water or air, preferably water.

[0063] When the cooling medium is gas, the cooling medium booster 29 is a fan, and when the cooling medium is water or solution, the cooling medium booster 29 is a liquid circulating pump.

[0064] The unexplained facilities in the organic heat carrier furnace are matched according to the reliable and mature technology in the known existing organic heat carrier furnace.

[0065] Although the above-mentioned embodiments have been disclosed, they are not intended to limit the present application, and any person skilled in the art can make various changes or modifications without departing from the spirit and scope of the present application, and the same belongs to the protection scope of the present application. For example, the present application can utilize heat-conducting oil to recover waste heat, preheat air, and form a closed-loop circulation of heat-conducting oil, which can also achieve efficient recovery of flue gas waste heat. Therefore, the protection scope of the present application should be defined by the claims of the present application.

Claims

1. An organic heat carrier furnace, characterized in that: the organic heat carrier furnace system comprises a high-temperature side heat conducting oil furnace and a low-temperature side micro heat conducting oil furnace, the high-temperature side heat conducting oil furnace comprises a heat conducting oil furnace body (1), a burner (2), a heat oil pump (7), a heat using equipment (3), an oil gas separator (5) and connecting pipelines, heat conducting oil is sequentially connected by the heat oil pump (7), the heat conducting oil furnace body (1), the heat using equipment (3), the oil gas separator (5) and the heat oil pump (7) again, the high-temperature side heat conducting oil furnace is provided with a high-position expansion tank (4) and a low-position oil storage tank (8), the separated gas in the oil gas separator (5) enters the high-position expansion tank (4), the high-position expansion tank (4) is connected with the low-position oil storage tank (8) through an overflow pipe, the low-temperature side micro heat conducting oil furnace comprises a heat accumulating oil tank (11), a micro heat conducting oil pump (12), an oil gas heater (13), an out-of-furnace air preheater (14) and connecting pipelines thereof, the oil gas heater (13) is arranged on a flue (9) of the high-temperature side heat conducting oil furnace, flue gas with a higher temperature in the flue (9) is discharged after the temperature thereof is reduced by the oil gas heater (13), heat conducting oil led out from the heat accumulating oil tank (11) absorbs heat of the flue gas in the flue (9) through the micro heat conducting oil pump (12) and the oil gas heater (13), is sent to a fuel oil heater (17) to heat fuel oil sent from a fuel oil tank (15) and a fuel oil pump (16), the fuel oil with a higher temperature is sent to the burner (2) of the high-temperature side heat conducting oil furnace, is mixed with air sent by an air blower (10) to burn, and is returned to the heat accumulating oil tank (11), so as to form an organic heat carrier furnace in a combined cycle operation mode of the high-temperature side heat conducting oil furnace and the low-temperature side micro heat conducting oil furnace.

2. The organic heat carrier furnace according to claim 1, characterized in that: the low-position oil storage tank (8) and the heat accumulating oil tank (11) are combined into one.

3. The organic heat carrier furnace according to claim 1, characterized in that: an absorption type refrigerator is arranged, the absorption type refrigerator comprises a generator (20), a condenser (24), a throttling valve F9, an evaporator (25), an absorber (22) and a solution pump (18), heat conducting oil out of the oil gas heater (13) is sent to the generator (20) to heat a concentrated solution of a refrigerant pair, and is returned to the heat accumulating oil tank (11) through an oil return pipeline, heat conducting oil in the heat accumulating oil tank (11) is pressurized by the micro heat conducting oil pump (12) and is returned to the oil gas heater (13) again, so as to form a low-temperature heat utilization circulation loop of the heat conducting oil in the heat accumulating oil tank (11). ​ ​ ​ ​ ​ ​ ​ ​ The refrigerant pair concentrated solution formed in the absorber (22) is sent to the generator (20) by the solution pump (18), and high-temperature gaseous refrigerant (23) is generated by heating in the generator (20). The high-temperature gaseous refrigerant (23) is sent to the evaporator (25) through the condenser (24) and the expansion valve F10, absorbs the heat of the cooling medium sent by the cooling unit (28), and evaporates to generate low-temperature gaseous refrigerant (26) in the evaporator (25). The low-temperature gaseous refrigerant (26) returns to the absorber (22) and contacts with the refrigerant pair dilute solution sent from the throttling valve F9 in the generator (20), to form the refrigerant pair concentrated solution. The refrigerant pair concentrated solution in the absorber (22) returns to the generator (20) through the solution pump (18), thereby forming the refrigerant pair circulation loop of the absorption refrigerator, The cooling medium from the cooling unit (28) is pressurized by the cooling medium booster (29) and then sent to the evaporator (25) to absorb the cold released by the evaporation of the liquid refrigerant in the evaporator (25). The cooling medium that has absorbed the cold and has a reduced temperature returns to the cooling unit (28) for cooling supply, or the cooling medium from the cooling unit (28) enters the evaporator (25) to absorb the cold released by the evaporation of the liquid refrigerant, and then the cooling medium that has absorbed the cold and has a reduced temperature is pressurized by the cooling medium booster (29) and then returns to the cooling unit (28) for cooling supply, thereby forming the cooling medium cooling and re-cooling circulation loop of the cooling medium to the cooling unit (28).

4. The organic heat carrier furnace according to claim 1, characterized in that: The oil-gas heater (13) is one of a tube-shell heat exchanger and a plate heat exchanger.

5. The organic heat carrier furnace according to claim 3, characterized in that: The selected refrigerant pair of the absorption refrigerator includes ammonia-water, ammonia-sodium thiocyanate solution, dimethyl ether-ion liquid working medium, R134a-DMETG solution, or ammonia-ion liquid working medium.

6. The organic heat carrier furnace according to claim 3, characterized in that: The solution pump (18) includes an electrically driven liquid circulating pump or a natural circulation bubble pump.

7. The organic heat carrier furnace according to claim 1, characterized in that: The burner (2) of the high-temperature side heat conduction oil furnace uses coal, oil, or gas as fuel.

8. The organic heat carrier furnace according to claim 1, characterized in that: An air preheater (14) is provided outside the furnace: the heat conduction oil drawn from the heat storage oil tank (11) is heated by the micro heat conduction oil pump (12), the oil-gas heater (13), and the flue gas in the flue (9), and then sent to the air preheater (14) to heat the air sent by the air blower (10), and then returned to the heat storage oil tank (11). The air sent by the air blower (10) is heated by the air preheater (14) outside the furnace and then delivered to the burner (2) of the high-temperature side heat conduction oil furnace as combustion air.

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