Nitrogen sealing device with strong sealing property for coal-based rectification heating furnace
By adopting nitrogen sealing devices and multiple sealing structures in coal-based distillation heating furnaces, air leakage and resource waste caused by sealing problems are solved, heating efficiency and safety are improved, and environmental pollution is reduced.
Patent Information
- Application Number
- CN202422306643.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-23
AI Technical Summary
During the working process, the coal-based distillation heating furnace leaks due to the internal air pressure and sealing of the furnace body, which affects the heating efficiency and waste of resources. At the same time, the distillation gas overflows causes environmental pollution.
A nitrogen sealing device including a heating furnace sealing ceiling, a breathing valve, a nitrogen supply pipe and a nitrogen discharge pipe is designed. A protective layer is used to form a nitrogen gas to maintain a certain pressure in the sealing cavity, and a sealing groove and a sealing gasket are combined to realize a multiple sealing structure to improve sealing performance.
It improves the sealing of the heating furnace, enhances the thermal energy utilization rate and the safety of the distillation process, prevents the leakage of distilled gas, and reduces resource waste and environmental pollution.
Smart Images
Figure CN223089977U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing devices, and more specifically, to a nitrogen sealing device with strong sealing for a coal-based distillation heating furnace. Background Art
[0002] The coal-based distillation heating furnace is a heating device that uses coal as the main fuel for the distillation process. It belongs to a type of heating furnace and is specifically designed for industries such as petrochemical, textile printing and dyeing, plastics and rubber, paper, oil, synthetic fiber, and wood processing, providing heat sources below 350 degrees Celsius. During the operation of the coal-based distillation heating furnace, due to the influence of the internal pressure of the furnace body and the sealing performance of the connection of the furnace body components, air leakage may occur, affecting the heating efficiency and heat energy utilization rate of the heating furnace. At the same time, the overflow of distilled gas will also cause waste of resources and environmental pollution.
[0003] In view of this, the present utility model is specifically proposed. Summary of the Utility Model
[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a nitrogen sealing device with strong sealing for a coal-based distillation heating furnace. To solve the above technical problems, the basic concept of the technical solution adopted by the present utility model is as follows:
[0005] A nitrogen sealing device with strong sealing for a coal-based distillation heating furnace includes a sealed top cover of the heating furnace and the heating furnace body. A breathing valve is installed at the middle position above the sealed top cover of the heating furnace. A nitrogen supply pipe is arranged on one side of the breathing valve, and a nitrogen discharge pipe is arranged on the other side. A support ring is arranged near the upper end inside the heating furnace body. An upper sealing baffle is installed above the support ring. Sealing grooves are correspondingly opened on the mating surfaces of the upper sealing baffle and the support ring, and sealing gaskets are installed in the sealing grooves. A feeding port is opened at the lower part outside the heating furnace body. A mating installation slide rail is fixedly arranged on the side of the feeding port. A mating sliding groove is opened on the mating installation slide rail, and a sealing door is slidably connected and installed in the mating sliding groove. A wrench is arranged on the outer side of the upper part of the sealing door. A combustion furnace is arranged at the bottom inside the heating furnace body. A spacer is arranged above the combustion furnace. A distillation chamber is formed between the spacer and the upper sealing baffle.
[0006] As a further scheme of the present utility model: A stop valve is installed on the nitrogen supply pipe. A nitrogen supply valve is arranged on the side of the stop valve, and a filter is arranged on the side of the nitrogen supply valve. The filter is used to filter the nitrogen used for sealing.
[0007] As a further solution of the present utility model: a nitrogen discharge valve is installed on the nitrogen discharge pipe, and the ends of the nitrogen discharge pipe and the nitrogen supply pipe are connected to the cavity inside the sealed top cover of the heating furnace to form a nitrogen seal space.
[0008] As a further solution of the present utility model: a liquid inlet pipe is provided on one side of the outer wall of the heating furnace body, and a distillation discharge pipe is provided on the other side. Both the liquid inlet pipe and the distillation discharge pipe are located above the partition plate.
[0009] As a further solution of the present utility model: the upper sealing baffle is of a stepped structure, and a mating guide conical surface is provided at the lower position of the outer circular surface where the upper sealing baffle mates with the inner wall of the heating furnace body, facilitating plug-in installation.
[0010] As a further solution of the present utility model: a lower support frame is provided below the heating furnace body for effectively supporting the heating furnace body.
[0011] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art.
[0012] An upper sealing baffle is provided at the upper part inside the heating furnace body of the present utility model. A sealed cavity is formed between the upper sealing baffle and the sealed top cover of the heating furnace. A nitrogen sealing device is provided on the sealed top cover of the heating furnace to keep the sealed cavity within a certain pressure range, forming a protective layer with nitrogen. At the same time, the air pressure of nitrogen can press and seal the upper sealing baffle.
[0013] A sealing groove and a sealing gasket are provided on the joint surface between the upper sealing baffle and the support ring of the present utility model, further improving the installation sealing performance of the upper sealing baffle. The multiple sealing structures are provided to ensure the sealing effect inside the heating furnace body and improve the thermal energy utilization rate inside the heating furnace body and the safety of the rectification process.
[0014] The following further describes in detail the specific implementation manners of the present utility model with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings, as a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation of the present utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:
[0016] Figure 1 is a schematic structural diagram of the present utility model;
[0017] Figure 2This is the front view of the present utility model;
[0018] Figure 3 This is the main sectional view of the present utility model;
[0019] Figure 4 This is the partial enlarged view at position A of the present utility model.
[0020] In the figure: 1. Sealing top cover of the heating furnace; 2. Main body of the heating furnace; 3. Lower support frame; 4. Feeding port; 5. Matching installation slide rail; 6. Sealing door; 7. Wrench; 8. Liquid inlet pipe; 9. Nitrogen supply pipe; 10. Filter; 11. Nitrogen supply valve; 12. Stop valve; 13. Breather valve; 14. Nitrogen discharge pipe; 15. Nitrogen relief valve; 16. Distillation discharge pipe; 17. Combustion furnace; 18. Partition board; 19. Distillation chamber; 20. Support ring; 21. Upper sealing baffle; 22. Sealing groove; 23. Sealing gasket.
[0021] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners
[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0023] As Figures 1 to 4 shown, a nitrogen sealing device with strong sealing for a coal-based rectification heating furnace includes a sealing top cover 1 of the heating furnace and a main body 2 of the heating furnace. A breather valve 13 is installed at the middle position above the sealing top cover 1 of the heating furnace. A nitrogen supply pipe 9 is arranged on one side of the breather valve 13, and a nitrogen discharge pipe 14 is arranged on the other side. A support ring 20 is arranged near the upper end inside the main body 2 of the heating furnace. An upper sealing baffle 21 is installed above the support ring 20. Sealing grooves 22 are correspondingly formed on the mating surfaces of the upper sealing baffle 21 and the support ring 20, and sealing gaskets 23 are installed in the sealing grooves 22. A feeding port 4 is formed at the lower part of the outer side of the main body 2 of the heating furnace. A matching installation slide rail 5 is fixedly arranged on the side of the feeding port 4. A matching sliding groove is formed on the matching installation slide rail 5, and a sealing door 6 is slidably connected and installed in the matching sliding groove. A wrench 7 is arranged on the outer side of the upper part of the sealing door 6. A combustion furnace 17 is arranged at the bottom inside the main body 2 of the heating furnace. A partition board 18 is arranged above the combustion furnace 17. A distillation chamber 19 is formed between the partition board 18 and the upper sealing baffle 21.
[0024] Among them, a stop valve 12 is installed on the nitrogen supply pipe 9, a nitrogen supply valve 11 is arranged on the side of the stop valve 12, and a filter 10 is arranged on the side of the nitrogen supply valve 11. The filter 10 is used to filter the nitrogen used for sealing.
[0025] A nitrogen discharge valve 15 is installed on the nitrogen discharge pipe 14. The ends of the nitrogen discharge pipe 14 and the nitrogen supply pipe 9 are connected to the cavity inside the heating furnace sealing top cover 1 to form a nitrogen sealing space.
[0026] A liquid inlet pipe 8 is arranged on one side of the outer wall of the heating furnace body 2, and a distillation discharge pipe 16 is arranged on the other side. Both the liquid inlet pipe 8 and the distillation discharge pipe 16 are located above the spacer 18.
[0027] The upper sealing baffle 21 is of a stepped structure. A mating guiding conical surface is arranged at the lower position of the outer circular surface where the upper sealing baffle 21 mates with the inner wall of the heating furnace body 2, facilitating plug-in installation.
[0028] A lower support frame 3 is arranged below the heating furnace body 2 to effectively support the heating furnace body 2.
[0029] The working principle of the present utility model is as follows: An upper sealing baffle 21 is arranged at the upper part inside the heating furnace body 2. A sealing groove 22 and a sealing gasket 23 structure are arranged on the mating surface between the upper sealing baffle 21 and the support ring 20, so that the distillation chamber 19 of the heating furnace body 2 has good sealing performance. At the same time, a nitrogen sealing device is provided on the heating furnace sealing top cover 1. The nitrogen supply pipe 9 is connected to a nitrogen generation device or a nitrogen storage tank, and nitrogen is supplied into the nitrogen supply pipe 9. The nitrogen supply pipe 9 is connected to the filter 10 to filter the nitrogen and remove impurities in the nitrogen. The filtered nitrogen is supplied to the space between the heating furnace sealing top cover 1 and the upper sealing baffle 21 through the nitrogen supply valve 11 and the stop valve 12, forming a sealed environment with a certain air pressure, thereby preventing the entry of oxygen, moisture and other corrosive gases and preventing the leakage of gases during the distillation process. The air pressure of the nitrogen seal can exert pressure on the upper sealing baffle 21 to ensure the sealing performance of the fit between the upper sealing baffle 21 and the support ring 20 and the inner wall of the heating furnace body 2, and further ensure the sealing performance of the distillation chamber 19;
[0030] The breather valve 13 is a valve used to ensure that the space between the heating furnace sealing top cover 1 and the upper sealing baffle 21 is isolated from the atmosphere within a certain pressure range and can communicate with the atmosphere (breathe) when the pressure exceeds or is lower than this pressure range. It is mainly used to prevent the destruction of a closed space due to overpressure or vacuum;
[0031] An upper sealing baffle 21 is arranged at the upper part inside the heating furnace main body 2 of the utility model. A sealing cavity is formed between the upper sealing baffle 21 and the heating furnace sealing top cover 1. A nitrogen sealing device is arranged on the heating furnace sealing top cover 1 to keep the sealing cavity within a certain pressure range, forming a protective layer with nitrogen. At the same time, the air pressure of nitrogen can press the upper sealing baffle 21 tightly. A sealing groove 22 and a sealing gasket are arranged on the joint surface of the upper sealing baffle 21 and the support ring 20 to further improve the installation sealing performance of the upper sealing baffle 21. The multi-layer sealing structure is arranged to ensure the sealing effect inside the heating furnace main body 2, improve the thermal energy utilization rate inside the heating furnace main body 2 and the safety of the rectification process.
[0032] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications using the technical content prompted above into equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A nitrogen sealing device with strong sealing for a coal-based rectification heating furnace, comprising a sealing top cover (1) of the heating furnace and a heating furnace main body (2), characterized in that, A breather valve (13) is installed at the middle position above the sealed top cover (1) of the heating furnace. A nitrogen supply pipe (9) is arranged on one side of the breather valve (13), and a nitrogen discharge pipe (14) is arranged on the other side. A support ring (20) is arranged near the upper end inside the heating furnace main body (2). An upper sealing baffle (21) is installed above the support ring (20). Sealing grooves (22) are correspondingly formed on the mating surface between the upper sealing baffle (21) and the support ring (20). A sealing gasket (23) is installed in the sealing grooves (22). A feeding port (4) is formed at the lower part on the outer side of the heating furnace main body (2). A mating installation slide rail (5) is fixedly arranged on the side of the feeding port (4). A mating chute is formed on the mating installation slide rail (5), and a sealing door (6) is slidably connected and installed in the mating chute. A wrench (7) is arranged on the outer side of the upper part of the sealing door (6). A combustion furnace (17) is arranged at the bottom inside the heating furnace main body (2). A spacer plate (18) is arranged above the combustion furnace (17). A distillation chamber (19) is formed between the spacer plate (18) and the upper sealing baffle (21).
2. The nitrogen sealing device with strong sealing for a coal-based rectification heating furnace according to claim 1, characterized in that, A stop valve (12) is installed on the nitrogen supply pipe (9). A nitrogen supply valve (11) is arranged on the side of the stop valve (12), and a filter (10) is arranged on the side of the nitrogen supply valve (11).
3. The nitrogen sealing device with strong sealing for a coal-based rectification heating furnace according to claim 2, characterized in that, A nitrogen discharge valve (15) is installed on the nitrogen discharge pipe (14). The ends of the nitrogen discharge pipe (14) and the nitrogen supply pipe (9) are connected to the cavity inside the sealed top cover (1) of the heating furnace to form a nitrogen sealing space.
4. A nitrogen sealing device with strong sealing for a coal-based rectification heating furnace according to claim 3, characterized in that, A liquid inlet pipe (8) is arranged on one side of the outer wall of the heating furnace main body (2), and a distillation discharge pipe (16) is arranged on the other side. Both the liquid inlet pipe (8) and the distillation discharge pipe (16) are located above the spacer plate (18).
5. A nitrogen sealing device with strong sealing for a coal-based rectification heating furnace according to claim 4, characterized in that, The upper sealing baffle (21) has a stepped structure, and a mating guiding conical surface is arranged at the lower part of the outer circumferential surface of the mating part between the upper sealing baffle (21) and the inner wall of the heating furnace main body (2).
6. The nitrogen sealing device with strong sealing for a coal-based rectification heating furnace according to claim 5, characterized in that, A lower support frame (3) is arranged below the heating furnace main body (2).