Steelmaking heat source recovery system

Abstract

The utility model provides a steelmaking heat source recovery system which comprises a hot blast stove body, a control panel and a waste gas pipe orifice arranged on the hot blast stove body, a heat source recovery box is arranged on the outer side of the hot blast stove body, a water storage chamber is formed in the heat source recovery box, and a hot gas pipe body structure is arranged in the water storage chamber. The hot gas pipe body structure is connected with the waste gas pipe orifice through a connecting guide pipe; the heat source recycling box is provided with a liquid inlet pipe and a liquid outlet pipe, a liquid circulation assembly used for achieving circulation of water in the water storage cavity is arranged between the liquid inlet pipe and the liquid outlet pipe, circulation of the water in the water storage cavity can be achieved through the liquid circulation assembly, and dynamic contact between the spiral air guide pipe and the water in the water storage cavity is achieved. And water liquid in the water storage chamber can be added or discharged, so that the utilization efficiency of waste heat is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a steelmaking heat source recovery system. Background Art

[0002] During the steelmaking process, a large amount of high-temperature flue gas will be generated. Generally, this waste heat will be recovered through waste heat boilers. Due to the periodicity of smelting, the amount of steam generated by waste heat boilers also fluctuates greatly. For example, the instantaneous steam production during the smelting period can reach hundreds of tons / hour, while the steam production of the boiler during the non-smelting period is close to zero. In order to balance such huge steam load fluctuations, a technology combining waste heat boilers and steam accumulators is generally used to achieve continuous and stable output of waste heat steam.

[0003] The steelmaking waste heat recovery system with application number 201811340511.2 sends the drainage from the heat accumulator to the deaerator, which can recycle soft water and make full use of the heat of the drainage. The heat generated by the low-pressure circulating waste heat boiler is used to assist the deoxidation of the hot water in the deaerator, thereby reducing the consumption of deoxidation steam.

[0004] In actual applications, the current heat source recovery system adopts an independent waste heat recovery system, and during the recovery process, the cooling water and the heat pipe are in static contact, which leads to low heat source recovery efficiency. Utility Model Content

[0005] The purpose of the present invention is to solve the above-mentioned problems and to provide a steelmaking heat source recovery system to overcome the defects of the prior art, as described in detail below.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a steelmaking heat source recovery system, comprising a hot blast furnace body, a control panel and an exhaust gas pipe port arranged on the hot blast furnace body, a heat source recovery box is arranged on the outside of the hot blast furnace body, a water storage chamber is formed in the heat source recovery box, a hot gas pipe body structure is arranged in the water storage chamber, and the hot gas pipe body structure is connected to the exhaust gas pipe port through a connecting conduit;

[0008] The heat source recovery box is provided with a liquid inlet pipe and a liquid outlet pipe respectively, and a liquid circulation component for realizing water circulation inside the water storage chamber is provided between the liquid inlet pipe and the liquid outlet pipe.

[0009] Preferably, the hot air pipe body structure includes a spiral air guide pipe, which is sleeved on the outside of the hot air furnace body, and the two ends of the spiral air guide pipe are respectively connected to one end of the air outlet pipe and the air inlet pipe, and the other ends of the air outlet pipe and the air inlet pipe pass through a heat source recovery box, and one end of the air inlet pipe passing through the heat source recovery box is connected to the connecting duct.

[0010] Preferably, the spiral air duct is made of copper tube material, and the pitch of the spiral air duct is 10mm-30mm.

[0011] Preferably, the liquid circulation component includes a liquid pump, the water inlet and outlet of the liquid pump are respectively connected to one end of a liquid guide tube, the other ends of the two liquid guide tubes are respectively connected to electromagnetic three-way valves, the other two interfaces of one electromagnetic three-way valve are respectively connected to the liquid guide tube and the liquid inlet pipe and each other, the other two interfaces of another electromagnetic three-way valve are respectively connected to the liquid guide tube and the liquid outlet pipe and each other, and the output end of the control panel is respectively electrically connected to the input end of the liquid pump and the electromagnetic three-way valve.

[0012] Preferably, a collar is fixedly provided on the outer side of the heat source recovery box, a support plate is fixedly provided on the lower side of the collar, and a base is fixedly provided on the lower side of the support plate.

[0013] Preferably, the liquid inlet pipe is arranged on a side of the heat source recovery box away from the air inlet pipe, and the liquid outlet pipe is arranged on a side of the heat source recovery box close to the air outlet pipe.

[0014] Preferably, the heat source recovery box is cylindrical in shape, and an embedding hole for sleeve-mounting the hot blast furnace body is provided inside the heat source recovery box.

[0015] The beneficial effects are: the liquid circulation component can realize the circulation of water inside the water storage chamber, realize the dynamic contact between the spiral air guide tube and the water inside the water storage chamber, and can also realize the addition or discharge of water in the water storage chamber, which greatly improves the utilization efficiency of waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 This utility model Figure 1 Left view of

[0019] Figure 3 This utility model Figure 2 AA section view;

[0020] Figure 4 This utility model Figure 1 Stereoscopic diagram.

[0021] The reference numerals in the accompanying drawings are as follows: 1. hot air furnace body; 101. exhaust gas pipe outlet; 2. heat source recovery box; 2a. water storage chamber; 2b. spiral air duct; 3. air outlet pipe; 4. air inlet pipe; 5. connecting duct; 6. liquid circulation component; 6a. liquid pump; 6b. liquid guide pipe; 6c. electromagnetic three-way valve; 6d. liquid guide pipe; 7. liquid inlet pipe; 8. liquid outlet pipe; 9. control panel; 10. collar; 11. support plate; 12. base. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 As shown, the utility model provides a steelmaking heat source recovery system, including a hot blast furnace body 1, a control panel 9 and an exhaust gas pipe port 101 arranged on the hot blast furnace body 1, a heat source recovery box 2 is arranged on the outside of the hot blast furnace body 1, a water storage chamber 2a is formed in the heat source recovery box 2, a hot gas pipe body structure is arranged in the water storage chamber 2a, and the hot gas pipe body structure is connected to the exhaust gas pipe port 101 through a connecting conduit 5; a liquid inlet pipe 7 and a liquid outlet pipe 8 are respectively arranged on the heat source recovery box 2, and a liquid circulation component 6 for realizing water circulation inside the water storage chamber 2a is arranged between the liquid inlet pipe 7 and the liquid outlet pipe 8.

[0024] This embodiment proposes a specific hot air pipe body structure, which includes a spiral air guide pipe 2b, which is sleeved on the outside of the hot air furnace body 1, and the two ends of the spiral air guide pipe 2b are respectively connected to one end of the air outlet pipe 3 and the air inlet pipe 4, and the other ends of the air outlet pipe 3 and the air inlet pipe 4 pass through the heat source recovery box 2, and the end of the air inlet pipe 4 passing through the heat source recovery box 2 is connected to the connecting pipe 5. The spiral air guide pipe 2b is made of copper pipe material, and the pitch of the spiral air guide pipe 2b is 10mm-30mm.

[0025] It should be noted that, in order to match the above-mentioned hot air pipe body structure, this embodiment proposes a specific liquid circulation component 6, which includes a liquid pump 6a, the water inlet and outlet of the liquid pump 6a are respectively connected to one end of the liquid guide tube 6b, and the other ends of the two liquid guide tubes 6b are respectively connected to electromagnetic three-way valves 6c, the other two interfaces of one electromagnetic three-way valve 6c are respectively connected to the liquid guide tube 6d and connected to the liquid inlet pipe 7, and the other two interfaces of the other electromagnetic three-way valve 6c are respectively connected to the liquid guide tube 6d and connected to the liquid outlet pipe 8, and the output end of the control panel 9 is respectively electrically connected to the input end of the liquid pump 6a and the electromagnetic three-way valve 6c. In actual application, the liquid circulation component 6 has three functions, the first function is to realize the circulation of water in the water storage chamber 2a, the second function is to realize the addition of water in the water storage chamber 2a, and the third function is to realize the discharge of water in the water storage chamber 2a.

[0026] A collar 10 is fixedly disposed on the outer side of the heat source recovery box 2 , a support plate 11 is fixedly disposed on the lower side of the collar 10 , and a base 12 is fixedly disposed on the lower side of the support plate 11 .

[0027] The liquid inlet pipe 7 is arranged on a side of the heat source recovery box 2 away from the air inlet pipe 4 , and the liquid outlet pipe 8 is arranged on a side of the heat source recovery box 2 close to the air outlet pipe 3 .

[0028] The heat source recovery box 2 is cylindrical in shape, and an embedding hole for sleeve-mounting the hot blast furnace body 1 is provided inside the heat source recovery box 2 .

[0029] Working principle:

[0030] When in use, the exhaust gas generated by the hot blast furnace body 1 is discharged from the exhaust gas pipe port 101, and enters into the spiral air guide pipe 2b through the connecting conduit 5 and the air inlet pipe 4. The spiral air guide pipe 2b can exchange heat with the water in the water storage chamber 2a through the internal hot air. During this process, the liquid pump 6a circulates the water in the water storage chamber 2a through the liquid outlet pipe 8, the liquid guide pipe 6b and the liquid inlet pipe 7 in turn, so that when the hot air in the spiral air guide pipe 2b exchanges heat with the water in the water storage chamber 2a, the water is always in a state of dynamic contact with the spiral air guide pipe 2b, and the addition and discharge of water can also be achieved through the electromagnetic three-way valve 6c and the liquid guide pipe 6d.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A steelmaking heat source recovery system, characterized in that: It comprises a hot air furnace body (1), a control panel (9), and an exhaust gas pipe port (101) arranged on the hot air furnace body (1); a heat source recovery box (2) is arranged on the outside of the hot air furnace body (1); a water storage chamber (2a) is formed in the heat source recovery box (2); a hot air pipe body structure is arranged in the water storage chamber (2a); the hot air pipe body structure is connected to the exhaust gas pipe port (101) via a connecting conduit (5); The heat source recovery box (2) is provided with a liquid inlet pipe (7) and a liquid outlet pipe (8), respectively, and a liquid circulation component (6) is provided between the liquid inlet pipe (7) and the liquid outlet pipe (8) for realizing water circulation inside the water storage chamber (2a).

2. A steelmaking heat source recovery system according to claim 1, characterized in that: The hot air pipe body structure comprises a spiral air guide pipe (2b), which is sleeved on the outer side of the hot air furnace body (1), and the two ends of the spiral air guide pipe (2b) are respectively connected to one end of an air outlet pipe (3) and an air inlet pipe (4), the other ends of the air outlet pipe (3) and the air inlet pipe (4) pass through a heat source recovery box (2), and one end of the air inlet pipe (4) passes through the heat source recovery box (2) and is connected to a connecting conduit (5).

3. A steelmaking heat source recovery system according to claim 2, characterized in that: The spiral air guide tube (2b) is made of a copper tube material, and the pitch of the spiral air guide tube (2b) is 10 mm-30 mm.

4. A steelmaking heat source recovery system according to claim 1, characterized in that: The liquid circulation component (6) comprises a liquid pump (6a), the water inlet and outlet of the liquid pump (6a) are respectively connected to one end of a liquid guide tube (6b), the other ends of the two liquid guide tubes (6b) are respectively connected to electromagnetic three-way valves (6c), the other two interfaces of one electromagnetic three-way valve (6c) are respectively connected to the liquid guide tube (6d) and are connected to the liquid inlet tube (7), the other two interfaces of the other electromagnetic three-way valve (6c) are respectively connected to the liquid guide tube (6d) and are connected to the liquid outlet tube (8), and the output end of the control panel (9) is respectively electrically connected to the input end of the liquid pump (6a) and the electromagnetic three-way valve (6c).

5. A steelmaking heat source recovery system according to claim 1, characterized in that: A collar (10) is fixedly arranged on the outer side of the heat source recovery box (2), a support plate (11) is fixedly arranged on the lower side of the collar (10), and a base (12) is fixedly arranged on the lower side of the support plate (11).

6. The steelmaking heat source recovery system according to claim 1, characterized in that: The liquid inlet pipe (7) is arranged on a side of the heat source recovery box (2) away from the air inlet pipe (4), and the liquid outlet pipe (8) is arranged on a side of the heat source recovery box (2) close to the air outlet pipe (3).

7. The steelmaking heat source recovery system according to claim 1, characterized in that: The heat source recovery box (2) has a cylindrical shape, and an embedding hole for sleeve-mounting the hot blast furnace body (1) is provided inside the heat source recovery box (2).

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