Blast furnace lining cooling mechanism

Abstract

The utility model discloses a blast furnace lining cooling mechanism, which belongs to the technical field of steel-making blast furnaces and comprises a base, a steel-making blast furnace, an inner cavity, a furnace lining, a furnace top and an ascending pipe, the steel-making blast furnace is mounted at the top of the base, the inner cavity is arranged in the steel-making blast furnace, and the furnace lining is arranged in the outer wall of the steel-making blast furnace in a matched manner. And a cooling mechanism capable of cooling the furnace lining and a heat dissipation mechanism capable of dissipating heat of the heat dissipation fins are arranged on the outer side of the steel-making blast furnace. According to the utility model, the cooling mechanism is arranged, and the heat conduction silica gel pad A, the heat dissipation fins, the cooling pipe, the heat conduction silica gel pad B, the heat exchanger and the circulating water pump are matched for use, so that the heat conduction silica gel pad A and the heat dissipation fins can be used for conducting out the temperature on the surface of the furnace lining, and further the furnace lining is cooled; and heat conduction oil in the cooling pipe can be circularly cooled through the circulating water pump, the cooling pipe and the heat exchanger, and the furnace lining is further cooled in a water cooling mode.

Description

Technical Field

[0001] This utility model belongs to the field of blast furnace technology in steelmaking, specifically a blast furnace lining cooling mechanism. Background Technology

[0002] A blast furnace is made of steel plates as the furnace shell, with refractory bricks lining the inside. The blast furnace body is divided into five parts from top to bottom: the throat, the body, the waist, the belly, and the hearth. Due to the advantages of blast furnace ironmaking technology and economy, simple process, large production volume, high labor productivity, and low energy consumption, iron produced by this method accounts for the vast majority of the world's total iron production.

[0003] Research and analysis have revealed that the existing refractory brick lining inside the blast furnace will cause the lining temperature to rise continuously when the furnace temperature is high. Furthermore, due to the lack of cooling components for the lining, the surface temperature of the lining cannot be effectively dissipated. This results in the lining being in a high-temperature environment for a long time, which reduces the service life of the lining. Over time, the lining will crack, thereby reducing the overall service life and working efficiency of the blast furnace. Utility Model Content

[0004] The purpose of this utility model is to provide a blast furnace lining cooling mechanism in order to solve the problem of the lack of corresponding cooling and heat dissipation components in the furnace lining.

[0005] The technical solution adopted by this utility model is as follows: A blast furnace lining cooling mechanism includes a base, a steelmaking blast furnace, an inner cavity, a furnace lining, a furnace top, and a riser pipe. The steelmaking blast furnace is installed on the top of the base. The steelmaking blast furnace has an inner cavity inside. The steelmaking blast furnace has a furnace lining inside its outer wall. The steelmaking blast furnace has a furnace top. Both sides of the furnace top are equipped with riser pipes. The outside of the steelmaking blast furnace is equipped with a cooling mechanism for cooling the furnace lining and a heat dissipation mechanism for dissipating heat from the heat dissipation fins.

[0006] The cooling mechanism includes a thermally conductive silicone pad A, heat dissipation fins, a cooling pipe, a thermally conductive silicone pad B, a heat exchanger, and a circulating water pump. The thermally conductive silicone pad A is fitted to the outer wall of the furnace lining, and heat dissipation fins are installed on the surface of the thermally conductive silicone pad A, extending to the outside of the blast furnace. A cooling pipe is installed inside the furnace lining, and the cooling pipe is arranged in an "S" shape. A thermally conductive silicone pad B is fitted to the surface of the cooling pipe, and the thermally conductive silicone pad B is in close contact with the furnace lining. A circulating water pump and a heat exchanger are respectively installed on both sides of the top of the base. The inlet of the circulating water pump is connected to the outlet of the heat exchanger via a water pipe, and the outlet of the circulating water pump is connected to one end of the cooling pipe via a water pipe. The inlet of the heat exchanger is connected to the other end of the cooling pipe via a water pipe.

[0007] The heat dissipation mechanism includes an air-cooled base, a shaped flexible hose, an air outlet, a fan, and a branch air outlet duct. The air-cooled base is mounted on the outer wall of the steelmaking blast furnace near the lower part of the heat dissipation fins via a bracket and is arranged in a ring. An air outlet is installed at the top of the air-cooled base via a shaped flexible hose, and there are several air outlets arranged in a ring array. A fan is installed on one side of the top of the base, and a branch air outlet duct is connected to the air outlet of the fan. Each branch pipe of the branch air outlet duct is connected to its corresponding air-cooled base.

[0008] The cooling pipe is made of ferritic stainless steel.

[0009] The furnace lining is made of silicon carbide bricks.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0011] 1. In this utility model, by setting a cooling mechanism, the thermally conductive silicone pad A, heat dissipation fins, cooling pipes, thermally conductive silicone pad B, heat exchanger, and circulating water pump are used in combination. The thermally conductive silicone pad A and heat dissipation fins can conduct the temperature of the furnace lining surface, thereby achieving a cooling effect on the furnace lining. Furthermore, the circulating water pump, cooling pipes, and heat exchanger can circulate and cool the heat-conducting oil in the cooling pipes, further cooling the furnace lining by using water cooling.

[0012] 2. In this utility model, by setting up a heat dissipation mechanism, and through the coordinated use of the air-cooled base, the shaping hose, the air outlet, the fan, and the diversion air outlet pipe, the heat dissipation fins can be continuously cooled, so that the heat dissipation fins can continuously and efficiently conduct the temperature of the furnace lining surface, thereby improving the cooling efficiency of the furnace lining.

[0013] 3. In this utility model, by setting the furnace lining to be made of silicon carbide bricks, the heat resistance and service life of the furnace lining can be effectively improved, thereby effectively improving the working efficiency of the steelmaking blast furnace. Attached Figure Description

[0014] Figure 1 This is a simplified schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This utility model Figure 1 A simplified diagram of the enlarged structure at point A in the middle;

[0016] Figure 3 This is a simplified schematic diagram of a partial three-dimensional structure of the present invention;

[0017] Figure 4 This is a simplified schematic diagram of a partial three-dimensional structure of the present invention.

[0018] The markings in the diagram are: 1. Base; 101. Blast furnace; 102. Inner cavity; 103. Furnace lining; 104. Furnace top; 105. Ascending pipe; 2. Thermally conductive silicone pad A; 201. Heat dissipation fins; 3. Cooling pipe; 4. Thermally conductive silicone pad B; 5. Air-cooled base; 501. Shaped flexible hose; 502. Air outlet; 6. Fan; 601. Diverting air outlet pipe; 7. Heat exchanger; 8. Circulating water pump. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1:

[0021] Reference Figure 1-4 A blast furnace lining cooling mechanism includes a base 1, a steelmaking blast furnace 101, an inner cavity 102, a furnace lining 103, a furnace top 104, and riser pipes 105. The steelmaking blast furnace 101 is installed on the top of the base 1. The inner cavity 102 is provided inside the steelmaking blast furnace 101. The furnace lining 103 is provided inside the outer wall of the steelmaking blast furnace 101. The furnace top 104 is provided on the top of the steelmaking blast furnace 101. Riser pipes 105 are provided on both sides of the furnace top 104. A cooling mechanism for cooling the furnace lining 103 and a heat dissipation mechanism for dissipating heat from the heat dissipation fins are provided on the outside of the steelmaking blast furnace 101.

[0022] The cooling mechanism includes a thermally conductive silicone pad A2, heat dissipation fins 201, a cooling pipe 3, a thermally conductive silicone pad B4, a heat exchanger 7, and a circulating water pump 8. The thermally conductive silicone pad A2 is fitted to the outer wall of the furnace lining 103, and heat dissipation fins 201 are installed on the surface of the thermally conductive silicone pad A2, extending to the outside of the steelmaking blast furnace 101. A cooling pipe 3 is installed inside the furnace lining 103, and the cooling pipe 3 is arranged in an "S" shape. A thermally conductive silicone pad B4 is fitted to the surface of the cooling pipe 3, and the thermally conductive silicone pad B4 is in close contact with the furnace lining 103. Circulating water pumps are installed on both sides of the top of the base 1. Pump 8 and heat exchanger 7 are configured such that the inlet of the circulating water pump 8 is connected to the outlet of the heat exchanger 7 via a water pipe, and the outlet of the circulating water pump 8 is connected to one end of the cooling pipe 3 via a water pipe, and the inlet of the heat exchanger 7 is connected to the other end of the cooling pipe 3 via a water pipe. By starting the circulating water pump 8, the heat transfer oil in the cooling pipe 3 can be circulated and transported. The heat transfer oil absorbs the temperature on the surface of the furnace lining 103 by utilizing its heat absorption properties. After the heat transfer oil circulates once, it enters the heat exchanger 7 to rapidly cool the heat transfer oil. Then, the heat transfer oil is circulated again to achieve repeated cooling of the furnace lining 103.

[0023] Reference Figure 1-4 In this embodiment, the heat dissipation mechanism includes an air-cooled base 5, a shaped flexible hose 501, an air outlet 502, a fan 6, and a branch air outlet 601. The air-cooled base 5 is mounted on the outer wall of the steelmaking blast furnace 101 near the lower part of the heat dissipation fins 201 via a bracket. The air-cooled base 5 is arranged in a ring. An air outlet 502 is installed at the top of the air-cooled base 5 via the shaped flexible hose 501. There are several air outlets 502 arranged in a ring array. A fan 6 is mounted on one side of the top of the base 1. The air outlet of the fan 6 is connected to a branch air outlet 601. Each branch pipe is connected to its corresponding air-cooled base 5. The heat of the furnace lining 103 surface can be conducted through the thermally conductive silicone pad A2 and discharged to the outside through the heat dissipation fins 201. At this time, the fan 6 can be started to deliver cold air through the branch air outlet pipe 601 to each air-cooled base 5 and blown onto the heat dissipation fins 201 surface through the air outlet 502 to cool the heat dissipation fins 201. This process can be repeated to further cool the furnace lining 103. At the same time, the shaping hose 501 can be adjusted as needed to adjust the air outlet position of the air outlet 502.

[0024] Reference Figure 1 , 2 In this embodiment, the cooling pipe 3 is made of ferritic stainless steel. Because ferritic stainless steel has good thermal conductivity and heat resistance, using it as the material of the cooling pipe 3 can effectively improve the thermal conductivity of the cooling pipe 3 and prevent it from being damaged due to high temperature, thereby increasing its service life and improving its cooling efficiency for the furnace lining 103.

[0025] Reference Figure 1 , 2 In this embodiment, the furnace lining 103 is made of silicon carbide brick. Since silicon carbide brick is a refractory brick with high fire resistance, using it as the material of the furnace lining 103 can effectively improve the fire resistance and service life of the furnace lining 103.

[0026] Reference Figure 1 In this embodiment, the steelmaking blast furnace 101, blower 6, heat exchanger 7, and circulating water pump 8 are all electrically connected to an external power source via switches.

[0027] Working Principle: When using blast furnace 101, excessively high internal temperatures in the inner cavity 102 can lead to heat transfer to the surface of the furnace lining 103. Prolonged exposure to high temperatures can reduce the service life and heat resistance efficiency of the furnace lining 103. To address this, the circulating water pump 8 can be activated to circulate the heat transfer oil within the cooling pipe 3. The heat transfer oil's absorbent properties help absorb the heat from the surface of the furnace lining 103. After one cycle of circulation, the heat transfer oil enters the heat exchanger 7 for rapid cooling. The process is repeated to achieve the desired cooling effect on the furnace lining 103. The furnace lining 103 is cooled repeatedly. At the same time, the heat is conducted through the thermally conductive silicone pad A2 and discharged to the outside through the heat dissipation fins 201. At this time, the fan 6 can be started to deliver cold air through the split air outlet 601 to each air-cooled base 5 and blown onto the surface of the heat dissipation fins 201 through the air outlet 502 to cool the heat dissipation fins 201. This process can be repeated to further cool the furnace lining 103. At the same time, the shaping hose 501 can be adjusted as needed to adjust the air outlet position of the air outlet 502.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blast furnace lining cooling mechanism, comprising a base (1), a steelmaking blast furnace (101), an inner cavity (102), a furnace lining (103), a furnace top (104), and riser pipes (105), wherein the steelmaking blast furnace (101) is mounted on the top of the base (1), the inner cavity (102) is provided inside the steelmaking blast furnace (101), the furnace lining (103) is provided inside the outer wall of the steelmaking blast furnace (101), the furnace top (104) is provided on the top of the steelmaking blast furnace (101), and riser pipes (105) are provided on both sides of the furnace top (104), characterized in that: The steelmaking blast furnace (101) is provided with a cooling mechanism that can cool the furnace lining (103) and a heat dissipation mechanism that can dissipate heat from the heat dissipation fins on the outside. The cooling mechanism includes a thermally conductive silicone pad A (2), heat dissipation fins (201), a cooling pipe (3), a thermally conductive silicone pad B (4), a heat exchanger (7), and a circulating water pump (8). The outer wall of the furnace lining (103) is fitted with a thermally conductive silicone pad A (2), and heat dissipation fins (201) are installed on the surface of the thermally conductive silicone pad A (2). The furnace lining (103) is equipped with a cooling pipe (3), and a thermally conductive silicone pad B (4) is fitted on the surface of the cooling pipe (3). The circulating water pump (8) and the heat exchanger (7) are respectively installed on both sides of the top of the base (1).

2. The blast furnace lining cooling mechanism as described in claim 1, characterized in that: The heat dissipation mechanism includes an air-cooled base (5), a shaped flexible hose (501), an air outlet (502), a fan (6), and a branch air outlet pipe (601). The air-cooled base (5) is installed on the outer wall of the steelmaking blast furnace (101) near the heat dissipation fins (201) via a bracket. An air outlet (502) is installed at the top air outlet of the air-cooled base (5) via a shaped flexible hose (501). A fan (6) is installed on one side of the top of the base (1), and a branch air outlet pipe (601) is connected to the air outlet of the fan (6).

3. The blast furnace lining cooling mechanism as described in claim 1, characterized in that: The inlet of the circulating water pump (8) is connected to the outlet of the heat exchanger (7) through a water pipe, and the outlet of the circulating water pump (8) is connected to one end of the cooling pipe (3) through a water pipe, and the inlet of the heat exchanger (7) is connected to the other end of the cooling pipe (3) through a water pipe, and the cooling pipe (3) is arranged in an "S" shape.

4. The blast furnace lining cooling mechanism as described in claim 1, characterized in that: The heat dissipation fins (201) extend to the outside of the steelmaking blast furnace (101), and the thermally conductive silicone pad B (4) is in close contact with the furnace lining (103).

5. A blast furnace lining cooling mechanism as described in claim 2, characterized in that: Each branch pipe of the branch outlet pipe (601) is connected to its corresponding air-cooled base (5), and the air-cooled base (5) is arranged in a ring, and the number of air outlets (502) is several, arranged in a ring array.

6. A blast furnace lining cooling mechanism as described in claim 1, characterized in that: The cooling pipe (3) is made of ferritic stainless steel.

7. A blast furnace lining cooling mechanism as described in claim 2, characterized in that: The furnace lining (103) is made of silicon carbide brick.

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