Steel furnace waste heat recovery device convenient for dust removal and used for steel-making furnace

Abstract

The utility model discloses a steel furnace waste heat recovery device facilitating dust removal for a steel furnace. The steel furnace waste heat recovery device comprises a conversion box and an air pump fixedly installed above the conversion box. A dust removal mechanism is arranged on the front side of the conversion box, the dust removal mechanism comprises filter boxes, inclined baffles and activated carbon, the inclined baffles are fixedly connected to the inner sides of the filter boxes, and the filter boxes are distributed in an array mode; a shaking mechanism is arranged on the front side of the conversion box, the shaking mechanism comprises a drawing rope, a blocking piece, a spring and a limiting piece, and the limiting piece is fixedly connected to the outer side of the drawing rope. According to the steel furnace waste heat recovery device facilitating dust removal for the steel furnace, the inclined baffle and activated carbon adsorb most smoke dust, so that the situation that the bent pipe is blocked due to long-term use, the shaken-off smoke dust can be discharged from the dust discharging opening is prevented, the situation that the smoke dust is accumulated on the lower side of the inclined baffle, and the ventilation efficiency is affected can be prevented, and heat conduction oil has good heat absorption and heat dissipation capacity; and heat can be transferred into the water tank, so that the waste heat recovery capability is greatly enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel-making furnaces, in particular to a steel-making furnace waste heat recovery device which is convenient for dust removal. Background Art

[0002] A steelmaking furnace is a high-temperature furnace, which is mainly used to melt molten iron to make steel. The design and operation of a steelmaking furnace need to fully consider the impact of adverse conditions such as high temperature, high pressure, and corrosion to ensure safe and stable production. At the same time, the maintenance of the steelmaking furnace is also very important. Regular inspection and maintenance are required to ensure its normal operation and service life. The steelmaking furnace will produce dust during smelting. If it is not treated, it will be extremely harmful. The steelmaking furnace waste heat recovery technology has been widely used in practical applications. It is of great significance to improve energy utilization efficiency, reduce energy consumption and reduce environmental pollution. In the future, with the continuous advancement of technology and the continuous expansion of the scope of application, the steelmaking furnace waste heat recovery technology will have a broader development prospect.

[0003] However, the waste heat recovery device for common steelmaking furnaces does not take into account the impact of smoke on the waste heat recovery device, which is easy to block the pipeline and affect the waste heat recovery efficiency, and the waste heat recovery efficiency is low;

[0004] Therefore, we propose a steel furnace waste heat recovery device for a steelmaking furnace that is easy to remove dust, so as to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a steel furnace waste heat recovery device for a steelmaking furnace which is convenient for dust removal, so as to solve the current problems raised by the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal, comprising: a conversion box and an air extraction pump fixedly installed above the conversion box;

[0007] Also includes:

[0008] A dust removal mechanism is provided on the front side of the conversion box, wherein the dust removal mechanism includes a filter box, an inclined baffle and activated carbon, the inclined baffle is fixedly connected to the inner side of the filter box, and the filter boxes are distributed in an array;

[0009] A shaking mechanism is arranged on the front side of the conversion box, wherein the shaking mechanism comprises a drawstring, a baffle, a spring and a limit plate, wherein the limit plate is fixedly connected to the outside of the drawstring, and the limit plate corresponds to the inclined baffle plate one by one.

[0010] Preferably, the filter box is fixedly connected to the front side of the conversion box, and the filter box is bilaterally symmetrical about the vertical center axis of the conversion box, and the upper end of the drawstring passes through the inner side of the filter box.

[0011] Preferably, the lower end of the drawstring is fixedly connected to a baffle, the upper end of the baffle is fixedly connected to a spring, and the upper end of the spring is fixedly connected to the filter box.

[0012] Preferably, the lower side of the filter box is fixedly connected to the air inlet pipe, and the middle of the lower side of the air inlet pipe is fixedly connected to the air inlet, and the lower side is threadedly connected to the ash discharge port, and the ash discharge port is left-right symmetrical about the vertical center axis of the air inlet pipe.

[0013] Preferably, a valve is fixedly connected to the front side of the air inlet pipe, and the valve is left-right symmetrical about the vertical center axis of the air inlet pipe.

[0014] Preferably, the upper side of the filter box is fixedly connected to the air outlet pipe, and the inner side of the air outlet pipe is snap-connected with activated carbon, and the activated carbon is symmetrical about the vertical center axis of the air outlet pipe, and the valve is also arranged on the front side of the air outlet pipe.

[0015] Preferably, a bent pipe is fixedly connected to the inner side of the conversion box, and the upper end of the bent pipe is fixedly connected to the vacuum pump, and heat transfer oil is provided on the inner side of the conversion box, and an air outlet is fixedly connected to the rear side of the bent pipe, wherein the air outlet passes through the rear side of the conversion box.

[0016] Preferably, a water pool is fixedly connected to the inner side of the conversion box, and the water pool is located above the heat transfer oil.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the steel furnace waste heat recovery device for the steelmaking furnace is easy to remove dust, the inclined baffle and the activated carbon absorb most of the smoke dust to prevent the elbow from being blocked due to long-term use, and the shaken smoke dust will be discharged from the ash discharge port, which can prevent the smoke dust from accumulating on the lower side of the inclined baffle and affecting the ventilation efficiency. The heat transfer oil has good heat absorption and heat dissipation capabilities, and can transfer heat to the water pool, greatly enhancing the waste heat recovery capacity;

[0018] 1. It is equipped with an exhaust pump, an inclined baffle and activated carbon. The smoke generated by the steelmaking furnace is pumped into the air inlet pipe through the exhaust pump, and then most of the smoke dust is removed through the adsorption of the inclined baffle and activated carbon to prevent the elbow from being blocked due to long-term use;

[0019] 2. A drawstring, spring and limit plate are provided. By pulling the drawstring, the limit plate will move upward, causing the inclined baffle to bend. Pulling the drawstring multiple times will cause the dust to fall off and then be discharged from the ash discharge port, which can prevent smoke and dust from accumulating on the lower side of the inclined baffle and affecting ventilation efficiency.

[0020] 3. Bend pipes, heat transfer oil and water pools are provided. The adsorbed flue gas will enter the bend pipe, and the inside of the conversion box is filled with heat transfer oil. The heat transfer oil has good heat absorption and heat dissipation capabilities, and can transfer heat to the water pool, greatly enhancing the waste heat recovery capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front view structure of the connection between the filter box, the air inlet pipe and the air outlet pipe of the utility model;

[0022] Figure 2 This is a schematic diagram of the front view cutaway structure of the connection between the filter box, the air inlet pipe and the air outlet pipe of the utility model;

[0023] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 4 This is a side view of the structure of the utility model;

[0025] Figure 5 It is a side view cutaway structural schematic diagram of the utility model;

[0026] Figure 6 It is a schematic diagram of the structure of the utility model from top view.

[0027] In the figure: 1. conversion box; 2. vacuum pump; 3. filter box; 4. draw rope; 5. baffle; 6. spring; 7. inclined baffle; 8. limit plate; 9. air inlet pipe; 10. air inlet; 11. ash discharge port; 12. valve; 13. air outlet pipe; 14. activated carbon; 15. elbow; 16. heat transfer oil; 17. water tank; 18. air outlet. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-6 The utility model provides a technical solution: a steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal, comprising: a conversion box 1, an air pump 2, a filter box 3, a draw rope 4, a baffle 5, a spring 6, an inclined baffle 7, a limit plate 8, an air inlet pipe 9, an air inlet 10, an ash discharge port 11, a valve 12, an air outlet pipe 13, activated carbon 14, a bend pipe 15, heat transfer oil 16, a water pool 17 and an air outlet 18;

[0030] like Figure 2As shown, when using the steel furnace waste heat recovery device for a steelmaking furnace that is easy to remove dust, first connect the air inlet 10 to the flue gas duct of the steelmaking furnace, open all valves 12 in the air inlet pipe 9 and the air outlet pipe 13, put a proper amount of water in the water pool 17, and start the vacuum pump 2. The vacuum pump 2 can speed up the speed at which the flue gas enters the air inlet 10 and improve the efficiency of waste heat recovery;

[0031] like Figure 2 and Figure 3 As shown, the flue gas enters the air inlet pipe 9 from the air inlet 10 and is then transmitted to the filter box 3. The filter box 3 is symmetrically arranged about the vertical center axis of the air inlet pipe 9 and the air outlet pipe 13, which not only speeds up the speed of the flue gas entering the curved pipe 15, but also facilitates the cleaning of the smoke adsorbed in a certain filter box 3, and can ensure the continuous operation of the mechanism without shutting down to clean the dust, which is very convenient to use. After the flue gas enters the filter box 3, it will contact the inclined baffle 7 in the filter box 3 from bottom to top, and the dust inside the flue gas will be adsorbed to the lower side of the inclined baffle 7, and then transferred to the air outlet pipe 13 above the filter box 3. Activated carbon 14 is arranged at the lower part of the outlet pipe 13, and the activated carbon 14 is located on the baffle ring inside the outlet pipe 13. Through the adsorption effect of the inclined baffle 7 and the activated carbon 14, most of the dust in the flue gas generated during steelmaking in the steelmaking furnace can be removed, and the adsorbed flue gas will be transferred to the curved pipe 15 under the action of the vacuum pump 2;

[0032] like Figure 1 , Figure 2 and Figure 3As shown, after a period of use, the inclined baffle 7 in the filter box 3 and the activated carbon 14 in the air outlet pipe 13 need to be dusted. First, close the two valves 12 on the upper and lower parts of the left side, so that the smoke will not enter the filter box 3, and the air pump 2 will not suck air from the air outlet pipe 13. Open the valve 12 on the left side below the air inlet pipe 9, pull the drawstring 4 on the left side of the filter box 3, and the drawstring 4 moves under the action of the pulley inside the filter box 3 to reduce friction and change the direction of movement. The pulling of the drawstring 4 will cause the baffle 5 on the lower side of the drawstring 4 to move upward, and the baffle 5 will squeeze the spring 6 to cause the spring 6 to undergo elastic deformation. At this time, the drawstring 4 moves up with the limiting plate 8, and the limiting plate 8 pushes the inner side of the inclined baffle 7 to move upward. The inclined baffle plate 7 bends, the drawstring 4 is loosened, the spring 6 recovers its elastic deformation, and moves the baffle plate 5 downward, so that the upper end of the drawstring 4 is again closely attached to the outer side of the filter box 3. In addition, the inclined baffle plate 7 will return to its original state due to the loss of the limit plate 8, and vibrate, which will shake off the smoke and dust adsorbed on the lower side of the inclined baffle plate 7. The dust on the upper inclined baffle plate 7 will slide onto the lower inclined baffle plate 7 and eventually slide out of the valve 12 for easy cleaning. Then open the side of the air outlet pipe 13, replace the new activated carbon 14, close the side door and screw on the valve 12, and then open the two valves 12 on the left side. The filter box 3 on the left will continue to work. The cleaning operation of the right structure is the same as that of the left structure, so that the dust on both sides can be cleaned.

[0033] like Figure 5 As shown, the flue gas entering the elbow 15 contains a large amount of heat energy, the heat transfer oil 16 has good heat conductivity, and the contact area between the elbow 15 and the heat transfer oil 16 is large, so the heat can be transferred from the elbow 15 to the heat transfer oil 16, and then the water in the pool 17 is heated to achieve energy conversion for other operations. Finally, the flue gas will be discharged from the air outlet 18. The device is simple to operate, has high energy conversion efficiency, and is highly practical.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal, comprising: A conversion box (1) and an air pump (2) fixedly mounted above the conversion box (1); It is characterized by further comprising: A dust removal mechanism is arranged on the front side of the conversion box (1), wherein the dust removal mechanism comprises a filter box (3), an inclined baffle (7) and activated carbon (14), wherein the inclined baffle (7) is fixedly connected to the inner side of the filter box (3), and the filter boxes (3) are distributed in an array; The front side of the conversion box (1) is provided with a shaking mechanism, wherein the shaking mechanism comprises a drawstring (4), a baffle (5), a spring (6) and a limit plate (8), wherein the limit plate (8) is fixedly connected to the outside of the drawstring (4), and the limit plate (8) corresponds one to one with the inclined baffle (7).

2. The steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal according to claim 1 is characterized in that: The filter box (3) is fixedly connected to the front side of the conversion box (1), and the filter box (3) is symmetrical about the vertical center axis of the conversion box (1), and the upper end of the drawstring (4) passes through the inner side of the filter box (3).

3. The steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal according to claim 1 is characterized in that: The lower end of the drawstring (4) is fixedly connected to a baffle (5), the upper end of the baffle (5) is fixedly connected to a spring (6), and the upper end of the spring (6) is fixedly connected to the filter box (3).

4. The steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal according to claim 1 is characterized in that: The lower side of the filter box (3) is fixedly connected to the air inlet pipe (9), and the middle of the lower side of the air inlet pipe (9) is fixedly connected to the air inlet port (10), and the lower side is threadedly connected to the ash discharge port (11), and the ash discharge port (11) is symmetrical about the vertical center axis of the air inlet pipe (9).

5. The steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal according to claim 4 is characterized in that: A valve (12) is fixedly connected to the front side of the air inlet pipe (9), and the valve (12) is symmetrical with respect to the vertical center axis of the air inlet pipe (9).

6. The steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal according to claim 1 is characterized in that: The upper side of the filter box (3) is fixedly connected to the air outlet pipe (13), and the inner side of the air outlet pipe (13) is snap-connected with activated carbon (14), and the activated carbon (14) is symmetrical about the vertical center axis of the air outlet pipe (13), and the valve (12) is also arranged on the front side of the air outlet pipe (13).

7. The steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal according to claim 1 is characterized in that: The inner side of the conversion box (1) is fixedly connected to a curved pipe (15), and the upper end of the curved pipe (15) is fixedly connected to the vacuum pump (2). The inner side of the conversion box (1) is provided with heat transfer oil (16), and the rear side of the curved pipe (15) is fixedly connected to an air outlet (18), wherein the air outlet (18) passes through the rear side of the conversion box (1).

8. The steel furnace waste heat recovery device for a steelmaking furnace that is convenient for dust removal according to claim 1 is characterized in that: A water pool (17) is fixedly connected to the inner side of the conversion box (1), and the water pool (17) is located above the heat transfer oil (16).

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