CN209352938U - Heat energy recovery system for filter tank of blast furnace water slag system - Google Patents

Abstract

The utility model discloses a heat energy recovery system for a filter pool of a blast furnace slag system, comprising a high-altitude chimney (1), a filter pool (28), a water pump house (29), a cooling tower (30), a water storage pool (31), and a filter pool (28) is provided with a steam heat exchange unit (3) outside, and the top of the filter tank (28) is provided with a steam discharge hole, and the high-temperature steam discharged from the steam discharge hole can enter the steam heat exchange unit (3) to release heat, and the filter tank The lower part of (28) is provided with a high-temperature filtered water outlet, and the high-temperature filtered water discharged from the high-temperature filtered water outlet can enter the hot water heat exchange unit to release heat. The heat energy recovery system of the blast furnace water slag system filter pool can fully recover the heat energy of the slag washing water and steam in the filter pool, reduce the workload of the cooling tower, reduce the discharge of sulfur-containing steam in the filter pool, and truly realize energy saving and emission reduction and energy efficiency. Recycling.

Description

A heat recovery system for blast furnace water slag system filter pool

technical field

The utility model relates to the field of metallurgical heat energy recovery, in particular to a heat energy recovery system for a filter pool of a blast furnace slag system.

Background technique

High-temperature liquid slag (1350°C-1500°C) is produced during blast furnace smelting. Domestically, 700 million tons of molten iron is produced annually, and 250 million tons of high-temperature liquid slag is produced. Relevant research has been carried out for many years at home and abroad, hoping to make full use of the heat of blast furnace slag and realize the recovery and utilization of waste heat.

Although the prior art has provided a method for recovering heat energy from the blast furnace slag system filter tank, there are various defects to be solved in different degrees and in different aspects. It is necessary to study a new blast furnace slag system filter tank heat recovery method to realize Efficient recycling of energy and reduction of air pollution.

Utility model content

In order to recover the heat energy in the filter pool of the blast furnace water slag system. The utility model provides a heat energy recovery system for the filter tank of the blast furnace slag system. The heat energy recovery system for the filter tank of the blast furnace slag system can fully recover the heat energy of the slag flushing water and steam in the filter tank, reduce the working load of the cooling tower, and reduce the The discharge of sulfur-containing steam in the filter pool truly realizes energy saving, emission reduction and effective recycling of energy.

The technical utility model adopted by the utility model to solve the technical problems is: a thermal energy recovery system for the blast furnace slag system filter tank, including a high-altitude chimney, a filter tank, a water pump room, a cooling tower and a water storage tank. Heat unit, there is a steam discharge hole on the upper part of the filter tank, and a hot water heat exchange unit is installed in the water pump room. Heat is released in the steam heat exchange unit, and the lower part of the filter pool is provided with a high-temperature filtered water outlet. The high-temperature filtered water outlet is connected to the hot water heat exchange unit through a high-temperature filtered water delivery pipeline. The high-temperature filtered water discharged from the high-temperature filtered water outlet can Enter the hot water heat exchange unit to release heat.

The heat recovery system of the blast furnace water slag system filter pool also includes a first medium to be heated input pipeline, a first medium to be heated output pipeline, a slag-water mixture discharge channel and a condensed water delivery pipeline, the first medium to be heated input pipeline The medium to be heated can enter the steam heat exchange unit to absorb heat and be discharged from the first medium to be heated output pipeline, and the high-temperature steam discharged from the steam discharge hole can enter the steam heat exchange unit to release heat and be discharged from the condensed water delivery pipeline, Both ends of the slag-water mixture discharge channel are respectively connected to the high-altitude chimney and the filter tank, and the slag-water mixture discharge channel can send the condensed water discharged from the condensed water delivery pipeline into the filter tank.

The condensate delivery pipeline is connected to the high-altitude chimney through the steam discharge pipeline, the first output pipeline of the medium to be heated is connected to the user pipe network, and an electric butterfly valve and a manual butterfly valve are installed on the first output pipeline of the medium to be heated.

The steam heat exchange unit is provided with at least one steam heat exchanger.

An induced draft fan is installed on the high temperature steam delivery pipeline.

The heat energy recovery system of the blast furnace water slag system filter pool also includes a second medium to be heated input pipeline, a second medium to be heated output pipeline and a low-temperature filtered water delivery pipeline, and the second medium to be heated in the second medium to be heated input pipeline can be Enter the hot water heat exchange unit to absorb heat and discharge from the output pipeline of the second medium to be heated, and the high-temperature filtered water in the high-temperature filtered water delivery pipeline can enter the hot water heat exchange unit to release heat and discharge from the low-temperature filtered water delivery pipeline .

The hot water heat exchange unit is equipped with multiple hot water heat exchangers connected in parallel or in series, the second output pipeline of the medium to be heated is connected to the user pipe network, the low-temperature filtered water delivery pipeline is connected to the cooling tower, and the cooling tower is located in the storage tank above.

The hot water heat exchange unit is equipped with two hot water heat exchangers arranged in series, and a thermometer, a flow meter, a manual butterfly valve, a hot water pump, a one-way valve, an electric butterfly valve and a manual butterfly valve are arranged in sequence on the high-temperature filtered water delivery pipeline. A manual butterfly valve, an electric butterfly valve, a one-way valve, a manual butterfly valve and an electric butterfly valve are arranged in sequence on the output pipeline of the medium to be heated, an upper tower pump and a manual butterfly valve are arranged in sequence on the low-temperature filtered water delivery pipeline, and the slag flushing water is connected to the storage tank The discharge pipeline and the slag flushing water discharge pipeline are successively equipped with a manual butterfly valve, a slag flushing pump, a one-way valve, an electric butterfly valve and a manual butterfly valve.

A filter layer is arranged inside the filter tank, and a movable steam cover capable of closing the filter tank is arranged on the top of the filter tank.

A detection and analysis device is installed on the high-temperature filtered water delivery pipeline.

The beneficial effects of the utility model are:

1. It can fully recover the heat energy of the slag flushing water and steam in the filter tank, and realize the effective recycling of energy.

2. It can reduce the emission of sulfur-containing steam from the filter pool and reduce air pollution.

3. After the filtered water is treated by the heat exchanger, the temperature is reduced, which can reduce the workload of the cooling tower and achieve efficient cooling.

4. The use of non-powered heat exchangers has the advantages of low operating costs and high benefits.

5. Make full use of the original water pump room to realize the heat recovery of the filtered water in the filter pool, which is suitable for the environmental protection and energy saving transformation of the existing blast furnace slag system.

6. Detect and analyze the water quality of the filtered water, detect the temperature and flow rate of the filtered water at the same time, and feed back all the detection results to the blast furnace central control system in time, so as to optimize the quality and ratio of raw fuel of the blast furnace, optimize the operation of the blast furnace, and promote the smooth operation of the blast furnace. row plays an important role.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model.

Fig. 1 is a schematic diagram of the thermal energy recovery system of the blast furnace water slag system filter pool of the utility model.

1. High-altitude chimney; 2. Spraying device; 3. Steam heat exchange unit; 4. Electric butterfly valve; 5. Manual butterfly valve; 6. Movable steam cover; 7. Manual butterfly valve; 8. Electric butterfly valve; 9. One-way valve ;10. Manual butterfly valve; 11. Electric butterfly valve; 12. Thermometer; 13. Flowmeter; 14. Manual butterfly valve; 15. Heat pump; 16. One-way valve; 17. Electric butterfly valve; 18. Manual butterfly valve; 19. Hot water Heat exchanger; 20. Slag flushing water discharge pipeline; 21. Upper tower pump; 22. Manual butterfly valve; 23. Manual butterfly valve; 24. Slag flushing pump; 25. One-way valve; 26. Electric butterfly valve; 27. Manual butterfly valve; 28. Filtration pool; 29. Water pump room; 30. Cooling tower; 31. Water storage tank; 32. High temperature steam delivery pipeline; 33. High temperature filtered water delivery pipeline; Heating medium output pipeline; 36. Slag-water mixture discharge channel; 37. Condensed water delivery pipeline; 38. Filter layer; 39. Steam discharge pipeline; 40. User pipe network; 41. Second input pipeline for heating medium; 42. 2. The output pipeline of the medium to be heated; 43. The low-temperature filtered water delivery pipeline.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

A blast furnace water slag system filter tank heat recovery system, including a high-altitude chimney 1, a filter tank 28, a water pump room 29, a cooling tower 30 and a water storage tank 31, a steam heat exchange unit 3 is arranged outside the filter tank 28, and the upper part of the filter tank 28 A steam discharge hole is provided, and a hot water heat exchange unit is provided in the water pump room 29. The steam discharge hole is connected to the steam heat exchange unit 3 through a high-temperature steam delivery pipeline 32, and the high-temperature steam discharged from the steam discharge hole can enter the steam heat exchange unit 3, heat release, the lower part of the filter tank 28 is provided with a high-temperature filtered water outlet, the high-temperature filtered water outlet is connected to the hot water heat exchange unit through a high-temperature filtered water delivery pipeline 33, and the high-temperature filtered water discharged from the high-temperature filtered water outlet can enter Heat is released in the hot water heat exchange unit, as shown in Figure 1.

In this embodiment, the heat energy recovery system of the blast furnace water slag system filter tank further includes a first medium to be heated input pipeline 34, a first medium to be heated output pipeline 35, a slag-water mixture discharge channel 36 and a condensed water delivery pipeline 37, The first medium to be heated (such as normal temperature water or other medium to be heated) in the first medium to be heated input line 34 can enter the steam heat exchange unit 3 to absorb heat and be discharged from the first medium to be heated output line 35, the steam discharge The high-temperature steam discharged from the hole can enter the steam heat exchange unit 3 to release heat and be discharged from the condensed water delivery pipeline 37. The two ends of the slag-water mixture discharge channel 36 are respectively connected with the high-altitude chimney 1 and the filter tank 28, and the slag-water mixture discharge channel 36 The condensed water discharged from the condensed water delivery line 37 can be sent to the filter tank 28 .

In this embodiment, the condensed water delivery pipeline 37 is connected to the high-altitude chimney 1 through the steam discharge pipeline 39, and the high-temperature steam discharged from the steam discharge hole can enter the steam heat exchange unit 3 to release heat and be discharged from the steam discharge pipeline 39 into the high-altitude chimney 1. The high-altitude chimney 1 is equipped with a spray device 2, the first output pipeline 35 of the medium to be heated is connected to the user pipe network 40, and the first output pipeline 35 of the medium to be heated is provided with an electric butterfly valve 4 and a manual butterfly valve 5. The steam heat exchange unit 3 is provided with at least one steam heat exchanger, and an induced draft fan may be provided on the high-temperature steam delivery pipeline 32 , as shown in FIG. 1 .

In this embodiment, the heat energy recovery system of the blast furnace water slag system filter pool also includes a second medium to be heated input pipeline 41, a second medium to be heated output pipeline 42 and a low-temperature filtered water delivery pipeline 43, and the second medium to be heated is input The second medium to be heated in the pipeline 41 (such as normal temperature water or other medium to be heated) can enter the hot water heat exchange unit to absorb heat and be discharged from the second medium to be heated output pipeline 42, and the high-temperature filtered water in the high-temperature filter water delivery pipeline 33 Filtered water can enter the hot water heat exchange unit to release heat and be discharged from the low-temperature filtered water delivery line 43 .

In this embodiment, the hot water heat exchange unit is provided with a plurality of hot water heat exchangers 19 arranged in parallel or in series, the second output pipeline 42 of the medium to be heated is connected to the user pipe network 40, and the low-temperature filtered water delivery pipeline 43 It is connected with the cooling tower 30, the cooling tower 30 is located above the water storage tank 31, and the water pump room 29 is located between the filter tank 28 and the water storage tank 31, as shown in FIG. 1 .

In this embodiment, the hot water heat exchange unit is provided with two hot water heat exchangers 19 arranged in series, and a thermometer 12, a flow meter 13, a manual butterfly valve 14, and a hot water pump are arranged in sequence on the high-temperature filtered water delivery pipeline 33. 15. One-way valve 16, electric butterfly valve 17 and manual butterfly valve 18, the second to-be-heated medium output pipeline 42 is provided with manual butterfly valve 7, electric butterfly valve 8, one-way valve 9, manual butterfly valve 10 and electric butterfly valve 11 in sequence, low temperature filtration The water delivery pipeline 43 is provided with an upper tower pump 21 and a manual butterfly valve 22 in sequence, the water storage tank 31 is connected with a slag flushing water discharge pipeline 20, and the slag flushing water discharge pipeline 20 is sequentially provided with a manual butterfly valve 23, a slag flushing pump 24, a one-way Valve 25, electric butterfly valve 26 and manual butterfly valve 27.

In this embodiment, a filter layer 38 is provided inside the filter tank 28 , a movable steam cover 6 capable of sealing the filter tank 28 is provided on the top of the filter tank 28 , and a detection and analysis device is provided on the high-temperature filtered water delivery pipeline 33 .

In the utility model, a movable steam cover is set on the top of the filter pool, a steam heat exchanger is set on the side of the filter pool close to the high-altitude chimney, and one or more hot water heat exchangers are set in the water pump room. Power equipment such as tower pumps and slag flushing pumps, and non-power equipment such as steam heat exchangers and hot water heat exchangers realize the heat recovery of the filtered water at the bottom of the filter tank and the steam on the surface of the filter tank, reduce the emission of sulfur-containing steam, and realize the circulation of filtered water use.

In the utility model, one or more hot water heat exchangers are installed in the water pump room, and the multiple hot water heat exchangers are connected in series or in parallel according to the actual situation on site. A movable steam cover is installed on the top of the filter tank, and the movable steam cover seals the filter tank during slag flushing to avoid the discharge of sulfur-containing steam to the air; after the slag flushing stops, the steam cover is removed to facilitate the slag grasping operation to clean the slag particles in the filter tank.

In the utility model, the high-altitude chimney has a sufficient height, and sufficient negative pressure can be formed on the surface of the filter pool. Under the action of the negative pressure suction of the high-altitude chimney and the sealing of the steam cover, the steam on the surface of the filter pool is drawn away from the filter pool and enters the steam Heat Exchanger. An induced draft fan can be set between the filter tank and the high-altitude chimney to extract the steam on the surface of the filter tank and enter the steam heat exchanger. A spraying device is installed in the high-altitude chimney, and the spraying device sprays atomized water and collides with steam to form droplets that fall to the bottom of the high-altitude chimney.

In the utility model, when the blast furnace slag is flushed, the slag-water mixture carries steam into the filter tank, and a movable steam cover is set on the filter tank, and the steam on the surface of the filter tank and the high-temperature filtered water at the bottom of the filter tank are respectively drawn out during slag flushing, and the steam The heat exchange function of the heat exchanger and the hot water heat exchanger realizes the heat recovery of the filter tank and avoids the discharge of steam to the air. The blast furnace stops flushing slag, and when it is necessary to clean the slag particles in the filter tank, remove the steam cover to facilitate the slag grasping operation.

In the utility model, after the high-temperature filtered water flows out from the bottom of the filter pool, it passes through several hot water heat exchangers successively, and the heating of the medium to be heated (normal temperature water or other medium) is completed during the heat exchange process, and the normal temperature water (or other medium to be heated) Heating medium) enters the user pipe network after being heated by the hot water heat exchanger in the pump house.

In the utility model, the temperature of the high-temperature filtered water is reduced under the action of the heat exchanger to become low-temperature filtered water, and the low-temperature filtered water enters the cooling tower for further cooling and is used as low-temperature slag flushing water to realize the recycling of the filtered water. Open holes on the side of the filter tank near the high-altitude chimney to lead out the steam from the filter tank, and the pipe leading out the steam is inclined upward to avoid the accumulation of steam condensate in the pipe and corrode the pipe.

In the utility model, most of the extracted steam is condensed into water droplets under the action of the steam heat exchanger and then enters the filter tank together with the slag-water mixture, and a small part of the steam is not condensed and enters the high-altitude chimney. The steam entering the high-altitude chimney becomes liquid droplets under the action of the spray device, and then enters the filter pool through the slag-water mixture channel at the bottom of the high-altitude chimney.

In the utility model, at the bottom outlet of the filter tank, the water quality of the filtered water is detected and analyzed, and the temperature and flow rate of the filtered water are detected at the same time, and all the detection results are fed back to the blast furnace central control system in time to optimize the quality of the blast furnace raw fuel and Ratio, optimize blast furnace operation, and promote blast furnace smooth operation.

The blast furnace water slag system filter pool heat recovery system described in the utility model can be in the Chinese patent CN101265039 A (public date: September 17, 2008, disclosed "an environmental protection type bottom filtration method blast furnace slag treatment equipment and treatment method") It is improved on the basis of the original chimney and water pump house, without adding additional land, and the heat exchanger is used to complete the recovery and utilization of heat energy in the filter tank of the blast furnace slag system.

Two hot water heat exchangers 19 are installed in the water pump room, and the two heat exchangers are connected in series. High-temperature filtered water (about 70°C to 90°C) flows out from the bottom of the filter tank and passes through the two hot water heat exchangers 19 in turn. , complete the heating of normal temperature water in the heat exchange process.

Normal temperature water (about 25°C-35°C) is heated by the hot water heat exchanger 19 to become hot water (about 60°C-70°C), and enters the user pipe network through the one-way valve 9, the electric butterfly valve 8 and the manual butterfly valve 7. The high-temperature filtered water enters the hot water heat exchanger 19 after passing through the hot water pump 15, check valve 16, electric butterfly valve 17 and manual butterfly valve 18, and the temperature decreases under the action of the heat exchanger to become low-temperature filtered water (about 50°C-60°C) , the low-temperature filtered water enters the cooling tower through the upper tower pump 21 and the manual butterfly valve 22, and becomes cooling water (about 40° C. to 45° C.) after cooling and enters the water storage tank for storage. When slag flushing is required, the cooling water is drawn from the bottom of the water storage tank, the power is increased by the slag flushing pump 24, and then as low-temperature slag flushing water is led to the slag flushing point through the one-way valve 25, the electric butterfly valve 26 and the manual butterfly valve 27 to realize the filtration of water. Recycling.

A movable steam cover 6 is arranged on the top of the filter tank to seal the steam on the surface of the filter tank; after the slag flushing stops, the movable steam cover 6 is removed to facilitate slag grasping.

The side wall of the filter pool is close to the position near the top of the high-altitude chimney 1 to open holes to draw out the steam from the filter pool. The high-altitude chimney 1 requires a sufficient height (about 70 meters) to be able to form a sufficient negative pressure (about 500Pa～1000Pa) on the surface of the filter tank. If the height of the original chimney is insufficient, consider increasing the height of the chimney until it meets the demand or install an induced draft fan outside the opening.

Under the action of the negative pressure of the high-altitude chimney 1 or the induced draft fan and the seal of the movable steam cover 6, the steam on the surface of the filter tank is drawn out of the filter tank and enters the steam heat exchange unit 3.

Normal temperature water (about 25°C-35°C) (or other medium to be heated) enters the user pipe network after being heated by the steam heat exchange unit 3 (about 60°C-70°C), and most of the steam acts in the steam heat exchange unit 3 Condensate into water droplets, enter the filter pool together with the slag-water mixture, a small part of the steam is not condensed and enter the high-altitude chimney 1, and become water droplets under the action of the spray device 2 in the high-altitude chimney 1, and fall into the bottom of the high-altitude chimney through the slag-water mixture channel into the filter pool.

Changes in the quality and ratio of blast furnace raw fuel will lead to changes in the composition of blast furnace slag, which in turn will change the quality of filtered water. At the outlet of the bottom of the filter tank, the water quality of the filtered water flowing out after the filter layer is filtered is detected and analyzed, and a thermometer 12 and a flow meter 13 are installed at the same time to detect the temperature and flow of the filtered water, and all the detection results are timely fed back to the blast furnace central control The system plays an important role in optimizing the quality and ratio of blast furnace raw fuel, optimizing blast furnace operation, and promoting blast furnace operation.

The hot water (about 60℃～70℃) heated by the heat exchanger is widely used. After being introduced into the user pipe network, it can be used as a bath shower in the domestic water system, heating in winter, and can also be used as material humidification and preheating in the industrial water system. Wait. The heat energy of the slag flushing water and steam in the filter tank is effectively recovered, and the emission of sulfur-containing steam to the air is reduced, which is of great significance for energy saving and emission reduction.

The above is only a specific embodiment of the utility model, and it cannot limit the scope of utility model implementation, so the replacement of its equivalent components, or the equivalent changes and modifications made according to the patent protection scope of the utility model should still belong to areas covered by this patent. In addition, in the utility model, the technical features and the technical features, the technical features and the technical utility models, and the technical utility models and the technical utility models can be freely combined and used.

Claims (10)

1. A blast furnace water slag system filter tank heat recovery system is characterized in that, said blast furnace water slag system filter tank heat recovery system comprises high-altitude chimney (1), filter tank (28), water pump room (29), cooling tower (30) and the storage tank (31), the filter tank (28) is provided with a steam heat exchange unit (3), the upper part of the filter tank (28) is provided with a steam discharge hole, and the water pump room (29) is provided with a hot water exchange unit (3). The heat unit, the steam discharge hole is connected to the steam heat exchange unit (3) through the high-temperature steam delivery pipeline (32), the high-temperature steam discharged from the steam discharge hole can enter the steam heat exchange unit (3) to release heat, and the filter pool (28 ) is provided with a high-temperature filtered water outlet, the high-temperature filtered water outlet is connected to the hot water heat exchange unit through a high-temperature filtered water delivery pipeline (33), and the high-temperature filtered water discharged from the high-temperature filtered water outlet can enter the hot water for heat exchange heat in the unit. 2. The heat energy recovery system of the blast furnace slag system filter pool according to claim 1, characterized in that, the blast furnace slag system filter pool heat energy recovery system also includes a first medium to be heated input pipeline (34), a first waiting medium The heating medium output pipeline (35), the slag-water mixture discharge channel (36) and the condensed water delivery pipeline (37), the first medium to be heated in the first medium to be heated input pipeline (34) can enter the steam heat exchange unit ( 3) absorb heat in the medium and discharge it from the first output pipeline (35) of the medium to be heated, and the high-temperature steam discharged from the steam discharge hole can enter the steam heat exchange unit (3) to release heat and discharge it from the condensed water delivery pipeline (37), Both ends of the slag-water mixture discharge channel (36) are respectively connected to the high-altitude chimney (1) and the filter tank (28), and the slag-water mixture discharge channel (36) can send the condensed water discharged from the condensed water delivery pipeline (37) into the filter tank. Pool (28). 3. The blast furnace water slag system filter pool heat energy recovery system according to claim 2, characterized in that the condensed water delivery pipeline (37) is connected with the high-altitude chimney (1) through the steam discharge pipeline (39), and the first medium to be heated The output pipeline (35) is connected to the user pipe network (40), and an electric butterfly valve (4) and a manual butterfly valve (5) are provided on the first to-be-heated medium output pipeline (35). 4. The heat energy recovery system of the blast furnace slag system filter pool according to claim 2, characterized in that at least one steam heat exchanger is arranged in the steam heat exchange unit (3). 5. The heat energy recovery system of the blast furnace water slag system filter tank according to claim 1, characterized in that an induced draft fan is provided on the high-temperature steam delivery pipeline (32). 6. The heat energy recovery system of the blast furnace slag system filter pool according to claim 1, characterized in that, the blast furnace slag system filter pool heat energy recovery system also includes a second medium to be heated input pipeline (41), a second waiting medium The heating medium output pipeline (42) and the low-temperature filtered water delivery pipeline (43), the second to-be-heated medium in the second to-be-heated medium input pipeline (41) can enter the hot water heat exchange unit to absorb heat from the second to-be-heated medium The heating medium output pipeline (42) is discharged, and the high-temperature filtered water in the high-temperature filtered water delivery pipeline (33) can enter the hot water heat exchange unit to release heat and be discharged from the low-temperature filtered water delivery pipeline (43). 7. The blast furnace water slag system filter pool heat energy recovery system according to claim 6, characterized in that, the hot water heat exchange unit is provided with multiple hot water heat exchangers (19) connected in parallel or in series, the second The output pipeline (42) of the medium to be heated is connected to the user pipe network (40), the low-temperature filtered water delivery pipeline (43) is connected to the cooling tower (30), and the cooling tower (30) is located above the water storage tank (31). 8. The blast furnace water slag system filter tank heat recovery system according to claim 7, characterized in that, the hot water heat exchange unit is provided with two hot water heat exchangers (19) arranged in series, and the high-temperature filtered water is transported The pipeline (33) is provided with a thermometer (12), a flow meter (13), a manual butterfly valve (14), a hot water pump (15), a one-way valve (16), an electric butterfly valve (17) and a manual butterfly valve (18) in sequence, A manual butterfly valve (7), an electric butterfly valve (8), a one-way valve (9), a manual butterfly valve (10) and an electric butterfly valve (11) are sequentially provided on the second output pipeline (42) of the medium to be heated, and the low-temperature filtered water delivery pipeline (43) is provided with an upper tower pump (21) and a manual butterfly valve (22) in sequence, the water storage tank (31) is connected with a slag flushing water discharge pipeline (20), and the slag flushing water discharge pipeline (20) is sequentially provided with a manual butterfly valve (23), slag washing pump (24), check valve (25), electric butterfly valve (26) and manual butterfly valve (27). 9. The blast furnace water slag system filter tank heat energy recovery system according to claim 1, characterized in that a filter layer (38) is provided in the filter tank (28), and a filter layer (38) is provided on the top of the filter tank (28) to close the filter tank. Removable steam hood (6) for pool (28). 10. The heat energy recovery system of the blast furnace water slag system filter pool according to claim 1, characterized in that a detection and analysis device is provided on the high-temperature filtered water delivery pipeline (33).