Coke oven with preheating function

Abstract

The utility model discloses a coke oven with a preheating function, which specifically comprises an oven body, a plurality of carbonization chambers are arranged in the oven body, the top of each carbonization chamber is respectively provided with an exhaust port and a feed port, a conveying cylinder is obliquely arranged and respectively arranged on one side of each carbonization chamber, a spiral shaft is rotatably arranged in the conveying cylinder, and the spiral shaft is connected with the feed port. The bottom of each spiral shaft is driven by a driving device to rotate; a heating bin is further arranged on one side of the furnace body, and the conveying barrels penetrate through the heating bin and are connected with the heating bin in a sealed mode. Each exhaust port is connected with the heating bin through an exhaust pipe, and gas exhausted by the carbonization chamber is introduced into the heating bin. During use, the spiral shaft drives coal to be conveyed to the top of the conveying barrel, when the coal passes through the interior of the heating bin, the coal in the conveying barrel is heated, finally the preheated coal enters the furnace body from the discharge pipe, and the coal is preheated for newly added coal in the decomposition process.

Description

Technical Field

[0001] This utility model relates to the field of coking oven technology, specifically a coking oven with preheating function. Background Technology

[0002] A coke oven is a furnace used to refine coke. In the carbonization chamber, coal is heated and turned into coke under air-isolated conditions. Currently, most of the heat emitted during carbonization in coke ovens is released and not recovered. Coal needs to be preheated before entering the oven, a process known as thermal coal coking. Thermal coal coking is a technology that preheats coking coal to approximately 200°C outside the oven before charging it into the coke oven for coking. Firstly, preheating the coal increases the amount of coal that can be charged, as the density of the preheated coal is increased, allowing for an 8-10% increase in the amount charged. Secondly, preheating accelerates the heating rate and shortens the coking time, thereby increasing the coke oven's production capacity by 35-40%. Furthermore, it improves coke quality and enhances the caking properties of the coal.

[0003] The carbonization process of coal in a coke oven generates a large amount of heat. Failure to recover and utilize this heat would result in a waste of resources. However, using this heat to heat the coal could provide rapid preheating. Therefore, we propose a coke oven with a preheating function. Utility Model Content

[0004] This utility model provides a coking oven with a preheating function, which has the advantage of allowing the discharged hot gas to be directly introduced into the heating chamber to heat the coal located in the conveying cylinder, thereby preheating the coal and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coking oven with preheating function, comprising a furnace body, a plurality of carbonization chambers, each carbonization chamber having an exhaust port and a feeding port at its top, and a number of conveying cylinders corresponding to the number of carbonization chambers; the conveying cylinders are inclined and placed on one side of each carbonization chamber, and a spiral shaft is rotatably installed inside the conveying cylinder, with the bottom of the spiral shaft driven to rotate by a driving device; a heating chamber is also provided on one side of the furnace body, and each conveying cylinder passes through the heating chamber and is sealed to the other; each exhaust port is connected to the heating chamber through an exhaust pipe to introduce the gas discharged from the carbonization chamber into the heating chamber; each feeding port is connected to the top outlet of the conveying cylinder through an exhaust pipe, and the bottom inlet of each conveying cylinder is connected to the bottom of a material holding box through a feed pipe, with a support at the bottom of the material holding box.

[0006] Preferably, a gas supply pipe is installed at one end of the heating chamber, and the other end of the gas supply pipe is connected to a conveying fan.

[0007] Preferably, the bottom of the heating chamber has a "V" shaped structure, and a drain trough is provided at the bottom of the "V" shaped structure. A spiral drain shaft is provided in the drain trough. Both ends of the spiral drain shaft are rotatably connected to the drain trough. One end of the spiral drain shaft is driven to rotate by the drive mechanism, and a drain pipe is provided at the end of the drain trough away from the drive mechanism.

[0008] Preferably, the driving mechanism is a second drive motor located below the sewage discharge trough. The shaft of the second drive motor and one end of the spiral sewage discharge shaft are respectively provided with transmission wheels, and the transmission wheels are connected to each other by a transmission belt.

[0009] Preferably, the conveying cylinder is provided with end caps at both ends, and the two ends of the spiral shaft are rotatably connected to the end caps respectively; the driving device includes a first drive motor provided on one side of the bottom of the conveying cylinder, and transmission wheels are provided on the shaft of the first drive motor and the bottom of the spiral shaft respectively, and the transmission wheels are connected to each other by a transmission belt; each first drive motor is mounted on a motor frame, and the motor frame is connected to a support.

[0010] Preferably, the two sides of the heating chamber are connected to the support frame and the furnace body respectively via a frame.

[0011] Preferably, the bottom of the material holding box is provided with a conical hopper corresponding to the position of the conveying cylinder, and the feed pipe is installed at the bottom of the conical hopper.

[0012] Compared with the prior art, in use, the coal is stored in the holding box and distributed in each conical bin. When the first drive motor rotates, it can drive the screw shaft to rotate, so that the screw shaft can carry the coal to the top of the conveying cylinder. When the coal passes through the heating chamber, the coal in the conveying cylinder is heated. Finally, the preheated coal enters the furnace body from the discharge pipe, so that the coal preheats the newly added coal during the decomposition process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a structural schematic diagram of part of this utility model.

[0015] Figure 3 This is a side view of the present invention.

[0016] In the diagram: 1. Furnace body; 2. End cover; 3. Exhaust pipe; 4. Material box; 5. Gas supply pipe; 6. Heating chamber; 7. Spiral drain shaft; 8. Drain pipe; 9. Drain trough; 10. Conveying cylinder; 11. Support; 12. Discharge pipe; 13. Feed pipe; 14. Motor frame; 15. First drive motor; 16. Feed port; 17. Second drive motor; 18. Spiral shaft; 19. Exhaust port; 20. Frame; 21. Conical hopper. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1 to 3 This utility model provides a technical solution: a coking oven with preheating function, including an oven body 1, such as... Figure 1 As shown, a material storage box 4 is provided on one side of the furnace body 1, and a support 11 is provided at the bottom of the material storage box 4. The support 11 is fixed to the ground. Multiple carbonization chambers are provided inside the furnace body 1, and the carbonization chambers are used to carbonize the coal.

[0019] This application also includes conveyor cylinders 10 in number corresponding to the number of carbonization chambers. The conveyor cylinders 10 are of steel structure and have excellent thermal conductivity, such as... Figure 1 and Figure 3 As shown, the conveying cylinders 10 are inclined and placed on one side of each carbonization chamber. A spiral shaft 18 is rotatably mounted inside the conveying cylinder 10. Specifically, end caps 2 are detachably mounted at both ends of the conveying cylinder 10. The end caps 2 are fastened to the ends of the conveying cylinder 10 by bolts, and both ends of the spiral shaft 18 are rotatably connected to the end caps 2. The bottom of the spiral shaft 18 is driven to rotate by a driving device. Figure 3 As shown, the driving device includes a first drive motor 15 disposed on one side of the bottom of the conveying cylinder 10. The shaft of the first drive motor 15 and the bottom of the spiral shaft 18 are respectively provided with transmission wheels, which are connected by a transmission belt. The transmission wheels are pulleys, synchronous pulleys or sprockets. Correspondingly, the transmission belt is a belt, synchronous belt or chain. Each first drive motor 15 is independent and each first drive motor 15 is mounted on a motor frame 14. The motor frame 14 is connected to the bracket 11.

[0020] Because the conveying cylinder 10 needs to be heated during the coal preheating process, in order to prevent the heat inside the conveying cylinder 10 from being transferred to the first drive motor 15 through the spiral shaft 18, the first drive motor 15 is separated from the conveying cylinder 10 to ensure that the first drive motor 15 is not affected by high temperature.

[0021] The focus of this application is on recovering the waste heat after carbonization in the carbonization chamber, and the recovery structure is as follows: Figure 2 and Figure 3 As shown, a heating chamber 6 is also provided on one side of the furnace body 1. The heating chamber 6 is located between the material container 4 and the furnace body 1, as shown in the figure. Figure 3As shown, the two sides of the heating chamber 6 are connected to the support 11 and the furnace body 1 respectively through the frame 20, so that the heating chamber 6 can be fixed and stably positioned between the furnace body 1 and the material box 4.

[0022] Each conveyor cylinder 10 passes through the heating chamber 6 and the two are sealed together, such as... Figure 3 As shown, the conveying cylinder 10 is installed inside the heating chamber 6, and there is a certain space between the heating chamber 6 and the conveying cylinder 10;

[0023] like Figure 1 As shown, each carbonization chamber has an exhaust port 19 and a feeding port 16 at its top. Each exhaust port 19 is connected to the heating chamber 6 via an exhaust pipe 3, introducing the gas discharged from the carbonization chamber into the heating chamber 6. Because the gas discharged from the carbonization chamber is at a high temperature, introducing it into the heating chamber 6 heats the interior of the heating chamber 6 to a high temperature, thereby heating the conveying cylinder 10. It should be noted that the heating chambers 6 are distributed along the conveying cylinder 10, ensuring that the length of the conveying cylinder 10 within the heating chamber 6 is sufficiently long, allowing the coal passing through the conveying cylinder 10 enough heating time.

[0024] Each feeding port 16 is connected to the top outlet of the conveying cylinder 10 via a discharge pipe 12, and each bottom inlet of the conveying cylinder 10 is connected to the bottom of the material container 4 via a feed pipe 13. Figure 3 As shown, the bottom of the holding box 4 is provided with conical bins 21 corresponding to the conveying cylinder 10, and the feed pipe 13 is installed at the bottom of the conical bins 21. In actual use, the coal is transported to the holding box 4 by the hoist for storage, and then the coal is distributed in each conical bin 21, so that the coal is distributed in each feed pipe 13. When the first drive motor 15 rotates, it can drive the screw shaft 18 to rotate, so that the screw shaft 18 carries the coal to the top of the conveying cylinder 10. When the coal passes through the heating chamber 6, the coal in the conveying cylinder 10 is heated, so that the coal is preheated. The preheated coal enters the furnace body 1 from the discharge pipe 12.

[0025] Furthermore, the gas flowing out of the furnace body 1 is not only high in temperature, but also carries ash and other impurities. Therefore, the bottom of the heating chamber 6 is designed as a "V" shaped structure. Dust and other impurities will concentrate at the bottom of the "V" shaped structure along its inner wall. A drain trough 9 is provided at the bottom of the "V" shaped structure, and all the impurities will eventually be concentrated in the drain trough 9. A spiral drain shaft 7 is provided in the drain trough 9. The two ends of the spiral drain shaft 7 are rotatably connected to the drain trough 9. One end of the spiral drain shaft 7 is driven to rotate by a drive mechanism, which is a second drive motor 17 located below the drain trough 9. The second drive motor 17 is mounted on a base, which is located on the ground below the drain trough 9. A transmission wheel is provided on the shaft of the second drive motor 17 and one end of the spiral drain shaft 7, and the transmission wheels are connected by a transmission belt. The transmission wheel can be a pulley, a synchronous pulley, or a sprocket, and the corresponding transmission belt can be a belt, a synchronous belt, or a chain.

[0026] The end of the drain tank 9 away from the drive mechanism is equipped with a drain pipe 8, and a valve is installed on the drain pipe 8. When the spiral drain shaft 7 rotates, it can continuously discharge the debris in the drain tank 9 from the drain pipe 8, keeping the heating chamber 6 clean.

[0027] Furthermore, the gas introduced into heating chamber 6 needs to be expelled, such as... Figure 1 and Figure 2 As shown, a gas supply pipe 5 is installed at one end of the heating chamber 6, and the other end of the gas supply pipe 5 is connected to a conveying fan. The conveying fan passes the gas into the waste gas treatment equipment for treatment.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coking oven with preheating function, comprising a furnace body (1), wherein the furnace body (1) is provided with a plurality of carbonization chambers, and each carbonization chamber is provided with an exhaust port (19) and a feeding port (16) at its top, characterized in that, It also includes conveyor cylinders (10) with a quantity corresponding to the number of carbonization chambers; The conveying cylinder (10) is inclined and placed on one side of each carbonization chamber. The conveying cylinder (10) is equipped with a rotating spiral shaft (18), and the bottom of the spiral shaft (18) is driven to rotate by a driving device. A heating chamber (6) is also provided on one side of the furnace body (1), and each conveying cylinder (10) passes through the heating chamber (6) and the two are sealed together; Each exhaust port (19) is connected to the heating chamber (6) via an exhaust pipe (3) to introduce the gas discharged from the carbonization chamber into the heating chamber (6); and, Each feeding port (16) is connected to the top outlet of the conveying cylinder (10) through the discharge pipe (12), and the bottom inlet of each conveying cylinder (10) is connected to the bottom of the holding box (4) through the feeding pipe (13). The bottom of the holding box (4) is provided with a support (11).

2. The coking oven with preheating function according to claim 1, characterized in that, The heating chamber (6) is equipped with a gas supply pipe (5) at one end, and the other end of the gas supply pipe (5) is connected to the conveying fan.

3. The coking oven with preheating function according to claim 1, characterized in that, The bottom of the heating chamber (6) is a "V" shaped structure. A drain trough (9) is provided at the bottom of the "V" shaped structure, and a spiral drain shaft (7) is provided inside the drain trough (9). The two ends of the spiral sewage shaft (7) are rotatably connected to the sewage trough (9). One end of the spiral sewage shaft (7) is driven to rotate by the drive mechanism. The sewage trough (9) is provided with a sewage pipe (8) at the end away from the drive mechanism.

4. The coking oven with preheating function according to claim 3, characterized in that, The driving mechanism is a second drive motor (17) located below the sewage trough (9). The shaft of the second drive motor (17) and one end of the spiral sewage shaft (7) are respectively provided with transmission wheels, which are connected by a transmission belt.

5. The coking oven with preheating function according to claim 1, characterized in that, The two ends of the conveying cylinder (10) are detachably equipped with end caps (2), and the two ends of the spiral shaft (18) are rotatably connected to the end caps (2); The driving device includes a first drive motor (15) located on one side of the bottom of the conveying cylinder (10). The shaft of the first drive motor (15) and the bottom of the screw shaft (18) are respectively provided with transmission wheels, which are connected by a transmission belt. Each first drive motor (15) is mounted on a motor frame (14), which is connected to a bracket (11).

6. The coking oven with preheating function according to claim 1, characterized in that, The heating chamber (6) is connected to the support (11) and the furnace body (1) on both sides via the frame (20).

7. The coking oven with preheating function according to claim 1, characterized in that, The bottom of the material container (4) is provided with a conical hopper (21) corresponding to the position of the conveying cylinder (10), and the feed pipe (13) is installed at the bottom of the conical hopper (21).

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