Blast furnace cooling structure

Abstract

The utility model discloses a blast furnace cooling structure which comprises a flue gas outlet pipe, one end of the flue gas outlet pipe far away from a feed inlet is fixedly connected with a combustion chamber, the upper surface of the combustion chamber is fixedly connected with a flue gas conveying pipe, and the upper surface of the combustion chamber is fixedly connected with a water storage tank. The end, away from the outer layer of the blast furnace, of the water outlet pipe is fixedly connected with a water storage tank, the upper surface of the water storage tank is fixedly connected with a steam conveying pipe, the end, away from the combustion chamber, of the smoke conveying pipe is fixedly connected with the steam conveying pipe, and the end, away from the water storage tank, of the steam conveying pipe is fixedly connected with a steam outlet pipe. The end, away from the feeding port, of the steam outlet pipe is fixedly connected with a cylinder, the side surface of the cylinder is fixedly connected with a generator, and the input end of the generator is fixedly connected with fan blades. Through the components, steam generated after cold water is heated and smoke in a blast furnace are used for driving the fan blades to rotate to generate mechanical energy, and the mechanical energy is converted into electric energy through the generator.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling, in particular to a blast furnace cooling structure. Background Art

[0002] The existing blast furnace cooling structure adopts a blast furnace cooling wall structure, which utilizes a Z-shaped water pipe placement cavity on the surface of the cooling wall substrate to reduce the center distance of the cooling water pipe of the cooling wall, increase the specific surface area of ​​the cooling wall, reduce the working temperature of the cooling wall, ensure that the blast furnace has sufficient cooling strength, and increase the service life of the blast furnace. However, it fails to effectively utilize the cooling water and the high-temperature steam generated by direct vaporization of water due to excessively high processing temperature. For example, a cooling device for a blast furnace cooling wall disclosed in a Chinese patent, whose application number is: CN202222882748.1, although it solves the problems of the cooling device used in the prior art, such as the large center distance of the cooling water pipe of the cooling wall, the small amount of cooling water, the high working temperature of the cooling wall, the poor cooling effect, the easy burning of the cooling wall, and the disadvantageous effect on the longevity of the blast furnace, it fails to effectively utilize the heat absorbed by the cooling water and the water vapor generated after the direct vaporization of the water, and it fails to make good use of energy, is not energy-saving and carbon-reducing, and has certain limitations in use. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a blast furnace cooling structure. Steam and hot water are generated after cold water cooling. The hot water is heated by the incompletely burned flue gas in the blast furnace to generate steam, which can eliminate harmful combustible gases and generate steam by heating. These high-temperature and high-pressure gases are then used to drive the steam turbine to generate electricity, which is energy-saving and environmentally friendly.

[0004] The utility model also provides a blast furnace cooling structure as described above, comprising: a blast furnace outer layer, the upper bottom surface of the blast furnace outer layer is fixedly connected to the blast furnace inner layer, a water storage cavity is formed between the blast furnace outer layer and the blast furnace inner layer, the side surface of the blast furnace outer layer is fixedly connected to a water pump through a water pipe, the side surface of the blast furnace outer layer is fixedly connected to a water outlet pipe, the side surface of the blast furnace inner layer is fixedly connected to an annular air supply pipe, the side surface of the annular air supply pipe is fixedly connected to an air pump, the upper surface of the blast furnace outer layer is fixedly connected to a material inlet, the side surface of the material inlet is fixedly connected to a steam outlet pipe, the side surface of the material inlet is fixedly connected to a smoke outlet pipe, and the side surface of the material inlet is fixedly connected to There is a material clock regulating valve; the end of the flue gas outlet pipe away from the feed inlet is fixedly connected to the combustion chamber, the upper surface of the combustion chamber is fixedly connected to the flue gas pipeline, the upper surface of the combustion chamber is fixedly connected to the water storage tank, the end of the water outlet pipe away from the outer layer of the blast furnace is fixedly connected to the water storage tank, the upper surface of the water storage tank is fixedly connected to the steam pipeline, the end of the flue gas pipeline away from the combustion chamber is fixedly connected to the steam pipeline, the end of the steam pipeline away from the water storage tank is fixedly connected to the steam outlet pipe, the end of the steam outlet pipe away from the feed inlet is fixedly connected to the cylinder, the side surface of the cylinder is fixedly connected to the generator, and the input end of the generator is fixedly connected to the fan blade. Through the above components, cold water can be introduced into the water chamber to cool the inner layer of the blast furnace. After absorbing heat, the cold water will be divided into hot water and steam. The hot water is discharged into the water storage tank and heated by the flue gas generated by incomplete combustion in the blast furnace to form steam. All steam and the flue gas after combustion are introduced into the cylinder together to drive the blades to rotate and generate electricity.

[0005] According to the blast furnace cooling structure described in the utility model, the lower surface of the outer layer of the blast furnace is fixedly connected to a base, an iron outlet is arranged inside the base, and a slag outlet is arranged inside the base. Through the above components, it is convenient to discharge the generated molten iron and residue.

[0006] According to the blast furnace cooling structure described in the utility model, the side of the iron outlet away from the base extends to the inner layer of the blast furnace, and the side of the slag outlet away from the base extends to the inner layer of the blast furnace. Through the above components, the molten iron in the blast furnace and the residue after coal combustion can be discharged.

[0007] According to the blast furnace cooling structure described in the utility model, the annular air supply pipe passes through the outer layer of the blast furnace through the air pipe and is connected to the inner layer of the blast furnace, the water pump passes through the outer layer of the blast furnace through the water pipe and is connected to the water chamber, and the end of the steam outlet pipe away from the cylinder passes through the feed port and is connected to the water chamber. Through the above components, it is convenient to provide combustion-supporting gas for the blast furnace, pass cold water into the water chamber, and discharge steam.

[0008] According to a blast furnace cooling structure described in the utility model, the bell control valve includes: an electric telescopic rod, a connecting rod is fixedly connected to the side surface of the electric telescopic rod, a control valve is fixedly connected to the end of the connecting rod away from the electric telescopic rod, a support rod is fixedly connected to the side surface of the connecting rod, a feed port is fixedly connected to the end of the support rod away from the connecting rod, a small bell connecting rod is slidably connected to the lower surface of the electric telescopic rod, a large bell connecting rod is slidably connected to the lower surface of the electric telescopic rod, and the side surface of the large bell connecting rod is slidably connected to the small bell connecting rod. Through the above components, the lifting and lowering of the bell can be controlled to facilitate unloading.

[0009] According to the blast furnace cooling structure described in the utility model, the end of the small bell connecting rod away from the electric telescopic rod is fixedly connected to the small bell, and the small bell is slidably connected to the feed inlet. Through the above components, the small bell can be driven to move while reducing the large amount of high-temperature gas released after opening the large bell.

[0010] According to the blast furnace cooling structure described in the utility model, the end of the large material bell connecting rod away from the electric telescopic rod passes through the small material bell and is fixedly connected to the large material bell, and the large material bell is slidably connected to the feeding port. Through the above components, the large material bell can be driven to move for easy unloading.

[0011] According to the blast furnace cooling structure described in the utility model, the end of the fan blade away from the generator passes through the cylinder and extends to the inside of the cylinder, and the side of the cylinder away from the steam outlet pipe is fixedly connected to the exhaust gas outlet pipe. Through the above components, high-temperature and high-pressure gas can be introduced into the cylinder to drive the fan blade to rotate and generate electricity, and then the used gas is passed into the exhaust gas outlet pipe for subsequent treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0013] Figure 1 This is the overall structural diagram of the blast furnace cooling structure of the utility model;

[0014] Figure 2 It is a rear view structural diagram of the blast furnace cooling structure of the utility model;

[0015] Figure 3 It is a front view cross-sectional structural diagram of the blast furnace cooling structure of the utility model;

[0016] Figure 4 This is the overall cross-sectional structural diagram of the blast furnace cooling structure of the utility model;

[0017] Figure 5 This is a structural diagram of the material clock regulating valve of the blast furnace cooling structure of the utility model.

[0018] Legend:

[0019] 1. Outer layer of blast furnace; 2. Inlet; 3. Annular air supply pipe; 4. Water pump; 5. Air pump; 6. Base; 7. Flue gas outlet pipe; 8. Steam outlet pipe; 9. Cylinder; 10. Generator; 11. Steam gas pipeline; 12. Flue gas pipeline; 13. Water storage tank; 14. Combustion chamber; 15. Exhaust gas outlet pipe; 16. Inner layer of blast furnace; 17. Fan blades; 18. Small material bell; 19. Large material bell; 20. Water outlet pipe; 21. Control valve; 22. Support rod; 23. Connecting rod; 24. Electric telescopic rod; 25. Small material bell connecting rod; 26. Large material bell connecting rod. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-5The utility model embodiment provides a blast furnace cooling structure, which includes: a blast furnace outer layer 1, the upper bottom surface of the blast furnace outer layer 1 is fixedly connected with a blast furnace inner layer 16, a place for burning to generate molten iron, a water cavity is formed between the blast furnace outer layer 1 and the blast furnace inner layer 16, which contains cold water for cooling, a water pump 4 is fixedly connected to the side surface of the blast furnace outer layer 1 through a water pipe, the water pump 4 penetrates the blast furnace outer layer 1 through the water pipe and is connected to the water cavity to provide power for the introduction of cold water, a water outlet pipe 20 is fixedly connected to the side surface of the blast furnace outer layer 1 to discharge high-temperature hot water, and an annular air supply pipe 3 is fixedly connected to the side surface of the blast furnace inner layer 16, the annular air supply pipe 3 penetrates the blast furnace outer layer 1 through the air pipe and is connected to the blast furnace inner layer 16, so that the combustion-supporting gas can flow into the blast furnace evenly In the inner layer 16, the side surface of the annular air supply pipe 3 is fixedly connected to an air pump 5 to provide power for introducing gas, the upper surface of the blast furnace outer layer 1 is fixedly connected to a feed port 2, into which metal minerals to be burned and fused are placed, the side surface of the feed port 2 is fixedly connected to a steam outlet pipe 8, the end of the steam outlet pipe 8 away from the cylinder 9 passes through the feed port 2 and is connected to the water holding chamber, and the steam generated after the cold water is heated and evaporated is discharged, the side surface of the feed port 2 is fixedly connected to a flue gas outlet pipe 7, and the high-temperature and high-pressure gas generated after combustion is discharged, and the side surface of the feed port 2 is fixedly connected to a material bell regulating valve, which controls the material bell for easy unloading; the end of the flue gas outlet pipe 7 away from the feed port 2 is fixedly connected to the combustion chamber 14, and the gas discharged from the flue gas outlet pipe 7 The gas will contain combustible and harmful gases such as carbon monoxide, which can be burned to generate carbon dioxide. At the same time, the heat after combustion can be used to heat hot water to form steam. The upper surface of the combustion chamber 14 is fixedly connected with a flue gas pipeline 12 to discharge the flue gas after combustion. The upper surface of the combustion chamber 14 is fixedly connected with a water storage tank 13 to collect the hot water discharged from the water storage cavity and use the heat generated by heating the combustion chamber 14 to become steam. The end of the water outlet pipe 20 away from the outer layer 1 of the blast furnace is fixedly connected to the water storage tank 13. The upper surface of the water storage tank 13 is fixedly connected with a steam pipeline 11 to discharge steam from the water storage tank 13. The end of the flue gas pipeline 12 away from the combustion chamber 14 is fixedly connected to the steam pipeline 11 to mix the flue gas and steam. The end of the steam transmission pipe 11 away from the water tank 13 is fixedly connected to the steam outlet pipe 8, and the mixed gas is passed into the steam outlet pipe 8 and then into the cylinder 9. The end of the steam outlet pipe 8 away from the feed port 2 is fixedly connected to the cylinder 9, and the high-temperature and high-pressure gas drives the fan blades 17 to rotate. The side surface of the cylinder 9 is fixedly connected to the generator 10, and the mechanical energy generated by the rotation of the fan blades 17 is converted into electrical energy. The side of the cylinder 9 away from the steam outlet pipe 8 is fixedly connected to the exhaust gas outlet pipe 15, and the utilized exhaust gas is discharged for subsequent treatment. The input end of the generator 10 is fixedly connected to the fan blade 17, and the end of the fan blade 17 away from the generator 10 penetrates the cylinder 9 and extends to the inside of the cylinder 9, and rotates to generate mechanical energy.

[0022] The lower surface of the blast furnace outer layer 1 is fixedly connected to a base 6, and an iron outlet is arranged inside the base 6. The iron outlet extends to the inner layer 16 of the blast furnace away from the side of the base 6, which is convenient for collecting the generated molten iron. A slag outlet is arranged inside the base 6, and the slag outlet extends to the inner layer 16 of the blast furnace away from the side of the base 6, which is convenient for cleaning the residue after combustion.

[0023] The material bell regulating valve comprises: an electric telescopic rod 24, a connecting rod 23 is fixedly connected to the side surface of the electric telescopic rod 24, an end of the connecting rod 23 away from the electric telescopic rod 24 is fixedly connected to the regulating valve 21, a support rod 22 is fixedly connected to the side surface of the connecting rod 23, an end of the support rod 22 away from the connecting rod 23 is fixedly connected to the feed port 2, a small material bell connecting rod 25 is slidably connected to the lower surface of the electric telescopic rod 24, an end of the small material bell connecting rod 25 away from the electric telescopic rod 24 is fixedly connected to the small material bell 18, the small material bell 18 is slidably connected to the feed port 2, a large material bell connecting rod 26 is slidably connected to the lower surface of the electric telescopic rod 24, an end of the large material bell connecting rod 26 away from the electric telescopic rod 24 penetrates the small material bell 18 and is fixedly connected to the large material bell 19, the large material bell 19 is slidably connected to the feed port 2, and the side surface of the large material bell connecting rod 26 is slidably connected to the small material bell connecting rod 25.

[0024] Working principle: When cooling is needed, cold water is passed into the water holding chamber by a water pump 4. Under the action of high temperature, the cold water forms steam and hot water, which are respectively passed into the steam outlet pipe 8 and the water storage tank 13. The flue gas generated by the blast furnace is passed into the combustion chamber 14 for combustion, and the heat generated is used to heat the hot water in the water storage tank 13 to make it steam. The steam and the flue gas in the combustion chamber 14 are discharged into the cylinder 9 through the steam outlet pipe 8 to drive the fan blades 17 to rotate, and the generated mechanical energy is converted into electrical energy by the generator 10.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A blast furnace cooling structure, characterized in that: include: A blast furnace outer layer (1), the upper bottom surface of the blast furnace outer layer (1) is fixedly connected to a blast furnace inner layer (16), a water cavity is formed between the blast furnace outer layer (1) and the blast furnace inner layer (16), the side surface of the blast furnace outer layer (1) is fixedly connected to a water pump (4) through a water pipe, the side surface of the blast furnace outer layer (1) is fixedly connected to a water outlet pipe (20), the side surface of the blast furnace inner layer (16) is fixedly connected to an annular air supply pipe (3), the side surface of the annular air supply pipe (3) is fixedly connected to an air pump (5), the upper surface of the blast furnace outer layer (1) is fixedly connected to a feed port (2), the side surface of the feed port (2) is fixedly connected to a steam outlet pipe (8), the side surface of the feed port (2) is fixedly connected to a smoke outlet pipe (7), and the side surface of the feed port (2) is fixedly connected to a material clock regulating valve; The end of the flue gas outlet pipe (7) away from the feed port (2) is fixedly connected to the combustion chamber (14), the upper surface of the combustion chamber (14) is fixedly connected to the flue gas transmission pipe (12), the upper surface of the combustion chamber (14) is fixedly connected to the water storage tank (13), the end of the water outlet pipe (20) away from the outer layer (1) of the blast furnace is fixedly connected to the water storage tank (13), the upper surface of the water storage tank (13) is fixedly connected to the steam transmission pipe (11), the flue gas outlet pipe (20) is fixedly connected to the steam transmission pipe (11), and the flue gas outlet pipe (20) is fixedly connected to the steam transmission pipe (11). One end of the gas transmission pipe (12) away from the combustion chamber (14) is fixedly connected to the steam transmission pipe (11), one end of the steam transmission pipe (11) away from the water storage tank (13) is fixedly connected to the steam outlet pipe (8), one end of the steam outlet pipe (8) away from the feed inlet (2) is fixedly connected to the cylinder (9), the side surface of the cylinder (9) is fixedly connected to the generator (10), and the input end of the generator (10) is fixedly connected to the fan blade (17).

2. A blast furnace cooling structure according to claim 1, characterized in that: The lower surface of the blast furnace outer layer (1) is fixedly connected to a base (6), an iron outlet is provided inside the base (6), and a slag outlet is provided inside the base (6).

3. A blast furnace cooling structure according to claim 2, characterized in that: The iron outlet is located away from the base (6) and extends to the inner layer (16) of the blast furnace. The slag outlet is located away from the base (6) and extends to the inner layer (16) of the blast furnace.

4. A blast furnace cooling structure according to claim 1, characterized in that: The annular air supply pipe (3) penetrates the outer layer (1) of the blast furnace through an air pipe and is connected to the inner layer (16) of the blast furnace. The water pump (4) penetrates the outer layer (1) of the blast furnace through a water pipe and is connected to the water containing chamber. The end of the steam outlet pipe (8) away from the cylinder (9) penetrates the feed port (2) and is connected to the water containing chamber.

5. A blast furnace cooling structure according to claim 1, characterized in that: The material clock regulating valve comprises: an electric telescopic rod (24), a connecting rod (23) is fixedly connected to the side surface of the electric telescopic rod (24), an end of the connecting rod (23) away from the electric telescopic rod (24) is fixedly connected to the regulating valve (21), a support rod (22) is fixedly connected to the side surface of the connecting rod (23), an end of the support rod (22) away from the connecting rod (23) is fixedly connected to the feed port (2), a small material clock connecting rod (25) is slidably connected to the lower surface of the electric telescopic rod (24), a large material clock connecting rod (26) is slidably connected to the lower surface of the electric telescopic rod (24), and the side surface of the large material clock connecting rod (26) is slidably connected to the small material clock connecting rod (25).

6. A blast furnace cooling structure according to claim 5, characterized in that: One end of the small material bell connecting rod (25) away from the electric telescopic rod (24) is fixedly connected to the small material bell (18), and the small material bell (18) is slidably connected to the feed port (2).

7. A blast furnace cooling structure according to claim 5, characterized in that: One end of the large material bell connecting rod (26) away from the electric telescopic rod (24) passes through the small material bell (18) and is fixedly connected to the large material bell (19), and the large material bell (19) is slidably connected to the feed port (2).

8. A blast furnace cooling structure according to claim 1, characterized in that: One end of the fan blade (17) away from the generator (10) penetrates the cylinder (9) and extends into the interior of the cylinder (9); and one side of the cylinder (9) away from the steam outlet pipe (8) is fixedly connected to an exhaust gas outlet pipe (15).

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