Coal quality vertical calcining furnace energy-saving equipment with waste heat recovery device

Abstract

The utility model relates to calcining furnace equipment technical field discloses a coal quality vertical calcining furnace energy -conserving equipment with waste heat recovery device, including furnace body, the feed assembly is provided with in furnace body front end, the box cover is hingedly connected with in furnace body top, the placement box is fixedly connected with in furnace body top, the exhaust pipe no.

Description

Technical Field

[0001] This utility model relates to the technical field of calcining furnace equipment, and in particular to an energy-saving device for a coal-fired vertical calcining furnace with a waste heat recovery device. Background Technology

[0002] A calcining furnace is a thermal equipment used to heat-treat carbonaceous raw materials (such as coke and anthracite) at high temperatures to improve their properties. It is used for ironmaking, rare metal recovery, catalyst production, environmental improvement, and the production of specialty chemicals.

[0003] Existing vertical calcining furnaces typically have high energy consumption and generate a large amount of high-temperature gas during combustion. This high-temperature gas is usually not utilized and is directly emitted, resulting in a waste of thermal energy due to the unused heat generated during combustion. In response to this technical problem, this application proposes an energy-saving device for a coal-based vertical calcining furnace with a waste heat recovery device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an energy-saving device for a coal-fired vertical calcining furnace with a waste heat recovery system. The exhaust pipe allows waste gas generated during calcination to be sent into a heating chamber where it exchanges heat with ambient air inside a connecting copper pipe. This increases the temperature of the gas entering the furnace, preventing the calcination temperature from being affected and thus reusing the heat carried in the waste gas to save energy.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An energy-saving device for a coal-fired vertical calcining furnace with a waste heat recovery unit includes a furnace body. A feeding assembly is provided at the front end of the furnace body. A box cover is hinged to the top of the furnace body. A placement box is fixedly connected to the top of the furnace body. An exhaust pipe is provided at the left end of the furnace body. A fixing block is fixedly connected to the left end of the furnace body. A heating box is fixedly connected to the left end of the fixing block. A connecting copper pipe is fixedly connected to the inner wall of the heating box. An air supply assembly is provided at the left end of the connecting copper pipe. A purification assembly is provided at the bottom end of the heating box.

[0007] Furthermore, the feeding assembly includes a feeding port fixedly connected to the front end of the furnace body, a second door is hinged to the front end of the feeding port, and a discharge port is opened on the front side of the bottom end of the furnace body.

[0008] Furthermore, one bottom end of the exhaust pipe is inserted through the top of the heating box, and the right end of the connecting copper pipe is fixedly connected to the air inlet pipe, the right end of which is inserted through the left end of the furnace body.

[0009] Furthermore, the air supply assembly includes an air supply pipe fixedly connected to the left end of the connecting copper pipe, and a fan fixedly connected to the other end of the air supply pipe.

[0010] Furthermore, the purification component includes an exhaust pipe II extending through the bottom of the heating box, with a purification box fixedly connected to the bottom of the exhaust pipe II, and two filters snapped into the inner wall of the purification box.

[0011] Furthermore, a dustproof screen is fixedly connected to the rear end of the second exhaust pipe, and the screen is an activated carbon screen.

[0012] Furthermore, a base is fixedly connected to the bottom of the furnace body, and a first door is snapped into the front end of the base.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the exhaust pipe can send the waste gas generated inside the furnace due to calcination into the heating box to exchange heat with the room temperature air inside the connecting copper pipe, thereby increasing the temperature of the gas entering the furnace and preventing the calcination temperature inside the furnace from being affected. This allows the heat carried in the waste gas to be reused, saving energy.

[0015] 2. In this utility model, after the heat exchange between the exhaust gas inside the heating box and the gas inside the connecting copper pipe is completed, the gas can enter the purification box through the exhaust pipe 2. Under the action of the filters on both sides, the carbon monoxide and sulfur dioxide inside the gas are treated, and then the gas is discharged from the purification box to prevent environmental pollution. Attached Figure Description

[0016] Figure 1 This is a perspective view of an energy-saving device for a coal-fired vertical calcining furnace with a waste heat recovery unit proposed in this utility model.

[0017] Figure 2 A cross-sectional view of the furnace body in an energy-saving device for a coal-fired vertical calcining furnace with a waste heat recovery unit proposed in this utility model. Figure 1 ;

[0018] Figure 3 A cross-sectional view of the furnace body in an energy-saving device for a coal-fired vertical calcining furnace with a waste heat recovery unit proposed in this utility model. Figure 2 .

[0019] Legend:

[0020] 1. Base; 2. First door; 3. Second door; 4. Feed inlet; 5. Furnace body; 6. Cover; 7. Exhaust pipe one; 8. Heating box; 9. Fixing block; 10. Gas supply pipe; 11. Inlet pipe; 12. Exhaust pipe two; 13. Purification box; 14. Fan; 15. Placement box; 16. Connecting copper pipe; 17. Discharge port; 18. Dustproof net; 19. Filter screen. Detailed Implementation

[0021] 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.

[0022] Reference Figure 1-3 This utility model provides an embodiment of an energy-saving device for a coal-fired vertical calcining furnace with a waste heat recovery unit, comprising a furnace body 5, a feeding assembly at the front end, the feeding assembly including a feeding port 4 fixedly connected to the front end of the furnace body 5, a second door 3 hinged to the front end of the feeding port 4, a discharge port 17 opened on the front side of the bottom end of the furnace body 5, a cover 6 hinged to the top end of the furnace body 5, a storage box 15 fixedly connected to the top end of the furnace body 5, and an exhaust pipe 7 passing through the left end of the furnace body 5. 7 is inserted at the bottom of the heating box 8. The right end of the connecting copper pipe 16 is fixedly connected to the air inlet pipe 11. The right end of the air inlet pipe 11 is inserted at the left end of the furnace body 5. The left end of the furnace body 5 is fixedly connected to the fixing block 9. The left end of the fixing block 9 is fixedly connected to the heating box 8. The inner wall of the heating box 8 is fixedly connected to the connecting copper pipe 16. The left end of the connecting copper pipe 16 is provided with an air supply assembly. The air supply assembly includes a gas transmission pipe 10 fixedly connected to the left end of the connecting copper pipe 16. The other end of the gas transmission pipe 10 is fixedly connected to a fan 14.

[0023] Specifically, the carbon raw materials to be calcined can be placed into the inner wall of the placement box 15 through the box cover 6 on the furnace body 5. Then, the second box door 3 is opened to put the coal fuel required for combustion into the furnace body 5 through the feed port 4 for combustion. The exhaust gas generated during the combustion process will be discharged into the furnace body 5 through the exhaust pipe 7. The outside air is drawn in by the fan 14 and then transported into the furnace body 5 through the gas supply pipe 10 to replenish oxygen and ensure normal combustion of fuel. The outside air enters the heating box 8 and then enters the connecting copper pipe 16. It is then heated by the high temperature exhaust gas in the exhaust pipe 7, so that the gas entering the furnace body 5 has a certain temperature, reducing the impact of furnace temperature fluctuations caused by cold outside air on the calcination quality.

[0024] A purification component is provided at the bottom of the heating box 8. The purification component includes an exhaust pipe 12 passing through the bottom of the heating box 8. A purification box 13 is fixedly connected to the bottom of the exhaust pipe 12. Two filters 19 are snapped into the inner wall of the purification box 13. A dustproof net 18 is fixedly connected to the rear end of the exhaust pipe 12. The filters 19 are activated carbon nets. A base 1 is fixedly connected to the bottom of the furnace body 5. A first box door 2 is snapped into the front end of the base 1.

[0025] Specifically, after the exhaust gas inside the heating box 8 has exchanged heat with the gas inside the connecting copper pipe 16, it can enter the purification box 13 through the exhaust pipe 12. Under the action of the filters 19 on both sides, the carbon monoxide and sulfur dioxide inside the gas are treated, and then the gas is discharged from the purification box 13 to prevent environmental pollution. The fuel waste residue inside the furnace body 5 can be pushed into the discharge port 17 and collected inside the base 1.

[0026] Working principle: In actual use, the carbon raw material to be calcined can be placed into 15 and 6 can be closed. 3 can be opened and the coal for calcination can be put into 5 through 4 for combustion. Then 3 can be closed. At this time, the coal burning in 5 will generate heat to indirectly heat the carbon raw material in 15. The exhaust gas produced during the combustion process will be discharged through 7 and enter 8. 8 is equipped with 16, which contains ambient air supplied by 10 and 14. At this time, the high-temperature exhaust gas entering 8 from 7 will heat the ambient air in 16. Heating is performed so that when 11 replenishes the gas inside 5 to maintain normal combustion, gas with a certain temperature can be introduced to avoid affecting the internal temperature of 5. After the exhaust gas inside 8 completes heat exchange with the air inside 16, it will be introduced into 13 along 12. Then, under the action of the two layers 19, carbon monoxide and sulfur dioxide in the exhaust gas can be adsorbed and treated to prevent the exhaust gas from being directly discharged and polluting the environment. After calcination is completed, 3 can be opened to sweep the ash remaining inside 5 into 17, and then fall into 1, to be centrally processed after 2 is opened later.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 coal quality vertical calcining furnace energy-saving equipment with waste heat recovery device, comprising a furnace body (5), characterized in that: The furnace body (5) is provided with a feeding component at the front end, and a box cover (6) is hinged to the top of the furnace body (5). A placement box (15) is fixedly connected to the top of the furnace body (5). An exhaust pipe (7) is provided through the left end of the furnace body (5). A fixing block (9) is fixedly connected to the left end of the furnace body (5). A heating box (8) is fixedly connected to the left end of the fixing block (9). A connecting copper pipe (16) is fixedly connected to the inner wall of the heating box (8). An air supply component is provided at the left end of the connecting copper pipe (16). A purification component is provided at the bottom end of the heating box (8).

2. The coal direct-fired shaft calcining furnace energy-saving equipment with waste heat recovery device according to claim 1, characterized in that: The feeding assembly includes a feeding port (4) fixedly connected to the front end of the furnace body (5), a second door (3) is hinged to the front end of the feeding port (4), and a discharge port (17) is opened on the front side of the bottom end of the furnace body (5).

3. The coal direct-fired shaft calciner energy-saving apparatus with waste heat recovery device according to claim 1, characterized in that: The bottom end of the exhaust pipe (7) is inserted through the top of the heating box (8), and the right end of the connecting copper pipe (16) is fixedly connected to the air inlet pipe (11). The right end of the air inlet pipe (11) is inserted through the left end of the furnace body (5).

4. The coal direct-fired shaft calcining furnace energy-saving apparatus with waste heat recovery device according to claim 1, characterized in that: The air supply assembly includes an air supply pipe (10) fixedly connected to the left end of the connecting copper pipe (16), and a fan (14) fixedly connected to the other end of the air supply pipe (10).

5. The coal direct-fired shaft calciner energy-saving apparatus with waste heat recovery device according to claim 1, characterized in that: The purification component includes an exhaust pipe (12) that passes through the bottom of the heating box (8). The bottom of the exhaust pipe (12) is fixedly connected to a purification box (13). Two filters (19) are snapped into the inner wall of the purification box (13).

6. The energy-saving equipment for a coal-fired vertical calcining furnace with a waste heat recovery device according to claim 5, characterized in that: The exhaust pipe 2 (12) is fixedly connected to a dustproof net (18) at its rear end, and the filter (19) is an activated carbon net.

7. The coal direct-fired shaft calcination furnace energy-saving equipment with waste heat recovery device according to claim 1, characterized in that: The furnace body (5) is fixedly connected to a base (1) at the bottom end, and the base (1) is snapped with a first box door (2) at the front end.

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