Recycling device based on coke oven gas waste heat recovery

Abstract

The utility model relates to the technical field of coke oven gas, in particular to a recycling device based on coke oven gas waste heat recovery. The recycling device based on coke oven gas waste heat recovery can improve the waste heat utilization efficiency. The device comprises a coke oven, a connecting pipe, energy storage tanks, a communicating pipe, an energy storage box, a return pipe and the like, the other end of a filter cartridge is connected with the connecting pipe, the end part of the connecting pipe is connected with a row of mutually communicated energy storage tanks, the upper parts of the energy storage tanks are communicated through the communicating pipe, and the lower ends of the energy storage tanks are connected and communicated with the energy storage box; and the energy storage box is connected and communicated with the coke oven through a return pipe for conveying heat energy. The waste heat in the coke oven can be recycled through the recycling device, so that the waste of energy can be greatly reduced, and the production cost of an enterprise is reduced; and through the bidirectional heat preservation technology of the coke oven and the energy storage box, the recycling efficiency of the waste heat of the coke oven can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coke oven gas technical field, concretely is a kind of recycling device based on coke oven gas waste heat recovery. BACKGROUND

[0002] Coke oven as the core equipment of coking plant, the high-temperature flue gas generated in its combustion process contains a large amount of heat energy, and the high-temperature flue gas usually needs to be recycled and treated using related equipment.

[0003] In actual industrial application, the recovery technology of coke oven high-temperature flue gas waste heat can play a certain role in heat energy recovery. For example, some coking enterprises use heat pipe boilers to recover the heat energy in the flue gas for the heating section in the coke oven production process, which not only reduces energy consumption to a certain extent and reduces the emission of sulfides and nitrogen oxides. However, the storage and heat preservation of recovered waste heat energy are not perfect enough, resulting in relatively low efficiency of recycling and utilizing waste heat in coke ovens.

[0004] Therefore, a recycling device based on coke oven gas waste heat recovery is provided, which can improve the efficiency of waste heat utilization. UTILITY MODEL CONTENTS

[0005] In order to overcome the limitations of the existing waste heat recovery and utilization device in actual use, the technical problem to be solved is to provide a recycling device based on coke oven gas waste heat recovery, which can improve the efficiency of waste heat utilization.

[0006] The technical scheme of the utility model is: a recycling device based on coke oven gas waste heat recovery, comprising a coke oven, an exhaust pipe, a filter cartridge and an exhaust pipe, the top rear side of the coke oven is connected and communicated with the exhaust pipe, the end of the exhaust pipe is connected and communicated with the filter cartridge, one end of the filter cartridge is connected and communicated with the exhaust pipe, and further comprising a recycling device, the other end of the filter cartridge is connected and communicated with the recycling device, the recycling device comprises a connecting pipe, an energy storage tank, a communication pipe, an energy storage box and a return pipe, the other end of the filter cartridge is connected with the connecting pipe, the end of the connecting pipe is connected with a row of energy storage tanks communicated with each other, the upper parts of the energy storage tanks are communicated with each other through the communication pipe, the lower ends of the energy storage tanks are connected and communicated with the energy storage box, and the energy storage box and the coke oven are connected and communicated with the return pipe for conveying heat energy.

[0007] Further, the recycling device further comprises a conduit, a pressure relief valve, a nozzle, a mounting frame and a one-way valve, the conduit extending into the energy storage tank and connected to the connecting pipe, the pressure relief valve arranged on the top of the energy storage tank, the nozzle connected to the end of the return pipe in the coke oven, the energy storage tank fixed by the mounting frame, and the one-way valve arranged on the return pipe near the energy storage tank.

[0008] Further, the recycling device further comprises a conduit, a pressure relief valve, a nozzle, a mounting frame and a one-way valve, the conduit extending into the energy storage tank and connected to the connecting pipe, the pressure relief valve arranged on the top of the energy storage tank, the nozzle connected to the end of the return pipe in the coke oven, the energy storage tank fixed by the mounting frame, and the one-way valve arranged on the return pipe near the energy storage tank.

[0009] Further, the recycling device further comprises a conduit, a pressure relief valve, a nozzle, a mounting frame and a one-way valve, the conduit extending into the energy storage tank and connected to the connecting pipe, the pressure relief valve arranged on the top of the energy storage tank, the nozzle connected to the end of the return pipe in the coke oven, the energy storage tank fixed by the mounting frame, and the one-way valve arranged on the return pipe near the energy storage tank.

[0010] Further, the recycling device further comprises a conduit, a pressure relief valve, a nozzle, a mounting frame and a one-way valve, the conduit extending into the energy storage tank and connected to the connecting pipe, the pressure relief valve arranged on the top of the energy storage tank, the nozzle connected to the end of the return pipe in the coke oven, the energy storage tank fixed by the mounting frame, and the one-way valve arranged on the return pipe near the energy storage tank.

[0011] Further, the recycling device further comprises a conduit, a pressure relief valve, a nozzle, a mounting frame and a one-way valve, the conduit extending into the energy storage tank and connected to the connecting pipe, the pressure relief valve arranged on the top of the energy storage tank, the nozzle connected to the end of the return pipe in the coke oven, the energy storage tank fixed by the mounting frame, and the one-way valve arranged on the return pipe near the energy storage tank.

[0012] The recycling device has the advantages that: the recycling device can recycle the waste heat in the coke oven, which can greatly reduce the waste of energy and reduce the production cost of enterprises; and the two-way heat preservation technology for the coke oven and the energy storage tank can further improve the recycling efficiency of the waste heat in the coke oven. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0014] Figure 2 It is another three-dimensional structure schematic view of the utility model.

[0015] Figure 3 It is a part of the three-dimensional structure schematic view of the utility model.

[0016] Figure 4 It is a sectional view of the heat preservation layer of the utility model.

[0017] Figure 5 It is a sectional view of the energy storage tank, the energy storage tank, the heat preservation tank and the mounting frame of the utility model.

[0018] The markings in the attached diagram are as follows: 1: coke oven, 2: exhaust pipe, 3: filter cylinder, 4: flue pipe, 5: connecting pipe, 6: mounting bracket, 7: energy storage tank, 70: pressure relief valve, 71: connecting pipe, 8: conduit, 9: energy storage box, 90: external connecting pipe, 10: return pipe, 100: one-way valve, 101: nozzle, 11: insulation box, 12: insulation layer, 13: water pipe, 14: water pump. Detailed Implementation

[0019] The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0020] Example: This utility model provides a recycling device based on coke oven gas waste heat recovery, such as... Figures 1 to 5 As shown, the system includes a coke oven 1, an exhaust pipe 2, a filter cylinder 3, a flue gas pipe 4, and a recycling device. The exhaust pipe 2 is connected to the rear top of the coke oven 1 to discharge high-temperature flue gas. The filter cylinder 3 is connected to the end of the exhaust pipe 2, and the filter cylinder 3 effectively removes pollutants from the high-temperature flue gas, reducing air pollution and improving environmental quality. One end of the filter cylinder 3 is connected to the flue gas pipe 4, and the other end of the filter cylinder 3 is connected to the coke oven 1 via a recycling device. The recycling device includes a connecting pipe 5 and an energy storage device. The system includes a tank 7, a connecting pipe 71, an energy storage box 9, and a return pipe 10. The other end of the filter cylinder 3 is connected to a connecting pipe 5, and the end of the connecting pipe 5 is connected to a row of interconnected energy storage tanks 7. The upper parts of the energy storage tanks 7 are connected to each other through the connecting pipe 71. The lower end of each energy storage tank 7 is connected to and connected to an energy storage box 9. The energy storage box 9 is connected to and connected to the coke oven 1 through a return pipe 10 for transporting heat energy. Through the energy storage tanks 7 and the energy storage box 9, the recovered heat energy can be efficiently and evenly stored and utilized, thereby improving the energy efficiency of the entire production system and achieving the goal of increasing the economic benefits of the enterprise.

[0021] Furthermore, such as Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the recycling device further comprises a conduit 8, a pressure relief valve 70, a nozzle 101, a mounting bracket 6 and a one-way valve 100. The inside of the energy storage tank 7 connected with the connecting pipe 5 is provided with the conduit 8 extending to the inside of the energy storage tank 9, and the upper end of the conduit 8 is connected with the connecting pipe 5, which is conducive to directly conveying the recycled energy to the energy storage tank 9. The top of the rest of the energy storage tank 7 is respectively provided with the pressure relief valve 70 for automatically adjusting the pressure inside the energy storage tank 7 and the energy storage tank 9, so as to improve the use safety. The end of the return pipe 10 in the coke oven 1 is connected and communicated with the nozzle 101, and the nozzle 101 is designed as an umbrella-shaped structure, which is conducive to recycling and conveying the energy to the coke oven 1, thereby achieving the purpose of efficient use of waste heat. Each energy storage tank 7 is fixed by the mounting bracket 6, and the one-way valve 100 is arranged on one side of the return pipe 10 close to the energy storage tank 9 for automatically controlling the energy delivery inside the energy storage tank 9. When the pressure value inside the energy storage tank 9 is lower than the preset value, the heat delivery will be stopped.

[0022] Further, as shown in Figures 1 to 5 It further comprises a heat preservation device, which comprises a heat preservation layer 12, a water pipe 13 and a water pump 14. The outside of the coke oven 1 is provided with the heat preservation layer 12, the inside of the heat preservation layer 12 is provided with the water pipe 13, and the water pump 14 is installed on the bottom frame of the energy storage tank 9. One end of the water pipe 13 is connected with the water pump 14. The heat preservation device further comprises a heat preservation box 11, which is wrapped around the outside of the energy storage tank 9 and connected and communicated with the water inlet pipe 13 and the return pipe 13 of the water pipe 13. Through the heat preservation structure design of the heat preservation layer 12 and the heat preservation box 11, the coke oven 1 and the energy storage tank 9 can be bidirectionally heat preserved, thereby further improving the recycling efficiency of the waste heat of the coke oven 1. The water pipe 13 is designed in a serpentine structure and wrapped around the outer wall of the coke oven 1, which is conducive to improving the heat preservation efficiency.

[0023] In addition, as shown in Figure 1 and Figure 5 It further comprises an external pipe 90 connected and communicated with the right side of the energy storage tank 9, which is conducive to conveying the recycled energy inside the energy storage tank 9 to the related equipment that needs to be used, thereby realizing flexible and efficient use of energy.

[0024] The high-temperature flue gas generated by the combustion of the coke oven 1 is discharged from the exhaust pipe 2, and is first subjected to preliminary filtration by the filter cylinder 3 to remove particulate matter and pollutants in the flue gas; the filtered flue gas is then introduced into the inside of a row of energy storage tanks 7 through the connecting pipe 5, the energy storage tanks 7 adopt high-efficiency heat pipe technology and can rapidly absorb and store the heat energy in the flue gas, the heat energy stored in the energy storage tanks 7 is balanced and distributed through the communication pipe 71 to ensure that the heat energy in each energy storage tank 7 is uniform; subsequently, the heat energy is introduced into the energy storage box 9 through the pipeline at the lower end of the energy storage tank 7 for further concentrated storage; the heat energy stored in the energy storage box 9 is transported back to the coke oven 1 or other process links that need to be heated through the backflow pipe 10, thereby realizing the recycling of heat energy and being conducive to improving the utilization rate of waste heat of the coke oven 1. In addition, through the action of the water circulating flow in the heat preservation device, the heat inside the coke oven 1 and the energy storage box 9 can be balanced and heat-insulated, heat loss can be effectively avoided, and the energy recovery and recycling efficiency of the coke oven 1 can be further improved.

[0025] It should be understood that the embodiments are only used to illustrate the present application and not used to limit the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various changes or modifications to the present application, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A coke oven gas waste heat recovery and recycling device, comprising a coke oven (1), an exhaust pipe (2), a filter cartridge (3) and a smoke exhaust pipe (4), the top rear side of the coke oven (1) is connected and communicated with the exhaust pipe (2), the end of the exhaust pipe (2) is connected and communicated with the filter cartridge (3), one end of the filter cartridge (3) is connected and communicated with the smoke exhaust pipe (4), characterized in that: The recycling device comprises a connecting pipe (5), an energy storage tank (7), a communicating pipe (71), an energy storage box (9), and a backflow pipe (10). The other end of the filter cartridge (3) is connected with the connecting pipe (5), the end of the connecting pipe (5) is connected with a plurality of energy storage tanks (7) which are communicated with each other, the upper parts of the energy storage tanks (7) are communicated with each other through the communicating pipe (71), the lower ends of the energy storage tanks (7) are connected with the energy storage box (9), and the energy storage box (9) is connected with the backflow pipe (10) which is used for conveying heat energy and is communicated with the coke oven (1). ​ 2. A coke oven gas waste heat recovery and recycling device according to claim 1, characterized in that: The recycling device further comprises a guide pipe (8), a pressure relief valve (70), a nozzle (101), a mounting frame (6), and a one-way valve (100). The inside of the energy storage tank (7) connected with the connecting pipe (5) is provided with the guide pipe (8) which extends to the inside of the energy storage box (9), the upper end of the guide pipe (8) is communicated with the connecting pipe (5), the top of each of the remaining energy storage tanks (7) is provided with the pressure relief valve (70), the end of the backflow pipe (10) located in the coke oven (1) is connected with and communicated with the nozzle (101), each of the energy storage tanks (7) is fixed through the mounting frame (6), and the one-way valve (100) is arranged on the side of the backflow pipe (10) close to the energy storage box (9).

3. A coke oven gas waste heat recovery and recycling device according to claim 1, characterized in that: The recycling device further comprises a guide pipe (8), a pressure relief valve (70), a nozzle (101), a mounting frame (6), and a one-way valve (100). The inside of the energy storage tank (7) connected with the connecting pipe (5) is provided with the guide pipe (8) which extends to the inside of the energy storage box (9), the upper end of the guide pipe (8) is communicated with the connecting pipe (5), the top of each of the remaining energy storage tanks (7) is provided with the pressure relief valve (70), the end of the backflow pipe (10) located in the coke oven (1) is connected with and communicated with the nozzle (101), each of the energy storage tanks (7) is fixed through the mounting frame (6), and the one-way valve (100) is arranged on the side of the backflow pipe (10) close to the energy storage box (9).

4. A coke oven gas waste heat recovery and recycling device according to claim 3, characterized in that: The recycling device further comprises a guide pipe (8), a pressure relief valve (70), a nozzle (101), a mounting frame (6), and a one-way valve (100). The inside of the energy storage tank (7) connected with the connecting pipe (5) is provided with the guide pipe (8) which extends to the inside of the energy storage box (9), the upper end of the guide pipe (8) is communicated with the connecting pipe (5), the top of each of the remaining energy storage tanks (7) is provided with the pressure relief valve (70), the end of the backflow pipe (10) located in the coke oven (1) is connected with and communicated with the nozzle (101), each of the energy storage tanks (7) is fixed through the mounting frame (6), and the one-way valve (100) is arranged on the side of the backflow pipe (10) close to the energy storage box (9).

5. A coke oven gas waste heat recovery and recycling device according to claim 3, characterized in that: The recycling device further comprises a guide pipe (8), a pressure relief valve (70), a nozzle (101), a mounting frame (6), and a one-way valve (100). The inside of the energy storage tank (7) connected with the connecting pipe (5) is provided with the guide pipe (8) which extends to the inside of the energy storage box (9), the upper end of the guide pipe (8) is communicated with the connecting pipe (5), the top of each of the remaining energy storage tanks (7) is provided with the pressure relief valve (70), the end of the backflow pipe (10) located in the coke oven (1) is connected with and communicated with the nozzle (101), each of the energy storage tanks (7) is fixed through the mounting frame (6), and the one-way valve (100) is arranged on the side of the backflow pipe (10) close to the energy storage box (9).

6. A coke oven gas waste heat recovery and recycling device according to claim 1, characterized in that: ​

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