High-temperature fluid sealing structure of carbonization furnace

Abstract

The utility model discloses a high-temperature fluid sealing structure of a carbonization furnace, which comprises a furnace body and two side plates, and the edges of the two ends of the furnace body are peripherally provided with protruding parts which are formed by the outward protruding of the end parts of the furnace body; the two side plates cover the two ends of the furnace body respectively, the sides, close to the furnace body, of the two side plates are each provided with a sunken part formed by inwards sinking one side of the corresponding side plate, the sunken parts correspond to the protruding parts in position so that the protruding parts can be contained, and the side plates and the furnace body can be in sealed connection; the sealing structure adopted by the device can absorb large deformation, can effectively prevent high-temperature fluid leakage, improves tightness and reliability of sealing, can reduce impact during flange connection, plays a role in shock absorption, accordingly improves stability of sealing, and is simple in structure, convenient to assemble and disassemble and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of carbonization furnaces, in particular to a high-temperature fluid sealing structure of a carbonization furnace. Background Art

[0002] With the rise of modern industry, especially modern petroleum, chemical industry, atomic energy industry, and large power stations, pressure vessels are developing towards high temperature, high pressure, high vacuum, deep cold, large-scale, and multi-series, which constantly puts forward new requirements for the sealing performance of equipment.

[0003] Seals are components or measures that prevent fluids or solid particles from leaking between adjacent joint surfaces and prevent external impurities such as dust and water from invading the interior of machinery and equipment. The utility model patent with publication number CN201738044U provides a continuous high-temperature carbonization furnace, the furnace body of which mainly includes a cylindrical main furnace body in the middle and furnace covers at both ends of the main furnace body. The existing furnace cover and furnace body are generally connected and sealed by a sealing gasket or sealant.

[0004] However, traditional sealants and greases have low temperature resistance, and powders are easy to solidify and adhere, which leads to defects such as poor resistance to temperature differences during sealing, easy adhesion to the equipment connection surface, difficulty in removal, and short shelf life. Although gasket sealing can reduce the vibration and noise generated by equipment during operation, there are still many shortcomings. For example, long-term use under high temperature, high pressure and corrosive media is easily affected by factors such as light, heat, and oxygen, resulting in aging; some gaskets are easily affected by thermal stress and chemical corrosion, resulting in cracking and other undesirable phenomena, and the cost of manufacturing special-purpose gaskets is also high. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies, propose a high-temperature fluid sealing structure for a carbonization furnace, and solve the technical problems of easy adhesion, temperature difference resistance, short shelf life, easy aging, cracking and high cost in the sealing of sealants and sealing gaskets in the prior art.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a high-temperature fluid sealing structure of a carbonization furnace, comprising: a furnace body and two side plates, wherein protrusions formed by the end portions of the furnace body protruding outward are arranged along the circumference at the edges of the two ends of the furnace body; the two side plates are respectively covered at the two ends of the furnace body, and a recessed portion formed by one side of the side plate being recessed inward is arranged on one side of the two side plates close to the furnace body, and the positions of the recessed portion and the protruding portion correspond to each other to accommodate the protruding portion, so that the side plate and the furnace body are sealed and connected.

[0008] In some embodiments, the high-temperature fluid sealing structure of the carbonization furnace also includes a stirring device, a xenon gas inlet, a xenon gas outlet, a temperature sensor, a feed port, an exhaust port, a sampling port, a salt outlet, a feed port and a salt inlet. The stirring device is horizontally installed in the furnace body, and its two ends are respectively installed on two side panels for stirring the materials in the furnace body. The xenon gas inlet and the xenon gas outlet are respectively arranged on the two side panels for introducing and discharging xenon gas respectively. The temperature sensors are arranged on the two side panels and the furnace body for measuring the temperatures at different positions. The furnace body is also provided with the feed port, The exhaust port, sampling port, salt outlet, material outlet and salt inlet, the material inlet is used to input materials, and the raw materials can be stably input into the equipment to facilitate subsequent processing; the exhaust port is used to discharge the steam generated during the heat exchange of materials; the sampling port is used to collect materials in the equipment to facilitate subsequent testing and analysis; the salt outlet is used to discharge the molten salt after it fills the cylinder interlayer; the material outlet is used to discharge the material in the furnace to ensure that the material can flow out of the equipment smoothly for subsequent testing; the salt inlet is used to transport molten salt into the furnace, which can ensure that the molten salt is safely and effectively introduced into the equipment for heat exchange and other processes.

[0009] In some embodiments, the outer sides of the furnace body and the side plates are provided with insulation layers for achieving insulation of the materials in the furnace.

[0010] In some embodiments, the protrusion includes a bump, which is arranged around the end surface edge of the furnace body with the central axis of the furnace body as a reference; the recessed portion includes a groove, which is arranged on a side of the side panel close to the furnace body, and the groove is fitted and plugged into the bump.

[0011] In some embodiments, the groove is adapted to the protrusion, and the opposite side walls of the groove are tightly fitted with the opposite sides of the protrusion; the protrusion and the groove are both arranged in a ring shape, and there are two protrusions and two grooves, and the two protrusions and the two grooves are coaxial and arranged at intervals.

[0012] In some embodiments, the furnace body includes an inner tube and two flanges sleeved on the outer sides of the two ends of the inner tube, the two flanges have opposite sides that are respectively located on the same plane as the two end surfaces of the inner tube, and the protrusions are arranged on the flanges. The flanges are evenly provided with a plurality of bolt holes along their circumference, and are connected to the side plates by bolts; each of the bolts is located at the edge of the side plates.

[0013] Compared with the prior art, the high-temperature fluid sealing structure of the carbonization furnace provided by the utility model, through the protrusions and recesses respectively arranged on the furnace body and the side plates, the front and rear butt flanges of the carbonization furnace are sealed and connected with the front and rear side plates by using the concave and convex surfaces. By adopting this sealing method, the protrusions between the recessed parts and the irregular surfaces can absorb larger deformations, thereby increasing the contact area between the side plates and the flange sealing surfaces with low concentricity, effectively preventing leakage of high-temperature fluids, and improving the tightness and reliability of the seal; and the utility model has the advantages of simple structure, convenient loading and unloading, and low cost; and solves the problems of easy adhesion, temperature difference resistance, short shelf life, easy aging, cracking, and high cost in the sealing of sealants and sealing gaskets in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a high-temperature fluid sealing structure of a carbonization furnace provided by an embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the main structure of the high-temperature fluid sealing structure of the carbonization furnace provided by the embodiment of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the installation of the furnace body and the side plate of the high-temperature fluid sealing structure of the carbonization furnace provided by the embodiment of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of a side plate of a high-temperature fluid sealing structure of a carbonization furnace provided by an embodiment of the utility model;

[0018] Figure 5 It is a three-dimensional structural schematic diagram of a side plate of a high-temperature fluid sealing structure of a carbonization furnace provided by an embodiment of the utility model;

[0019] Figure 6 It is a side structural schematic diagram of a side plate of a high-temperature fluid sealing structure of a carbonization furnace provided by an embodiment of the utility model;

[0020] Figure 7 It is a side structural schematic diagram of a side plate of a high-temperature fluid sealing structure of a carbonization furnace provided in another embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. furnace body; 101. convex block; 102. inner tube; 103. flange; 104. bolt; 105. first through hole;

[0023] 2. side plate; 201. groove; 202. second through hole;

[0024] 3. Stirring device; 31. Bearing seat; 4. Xenon gas inlet; 5. Xenon gas outlet; 6. Temperature sensor; 7. Feed inlet; 8. Exhaust port; 9. Sampling port; 10. Salt outlet; 11. Discharge port; 12. Salt inlet; 13. Base. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] In order to solve the technical problems of easy adhesion, temperature difference resistance, short shelf life, easy aging, cracking and high cost in sealant and sealing gasket sealing, the utility model provides a high-temperature fluid sealing structure of a carbonization furnace, the sealing structure adopted by the utility model can absorb large deformation, can effectively prevent leakage of high-temperature fluid, improve the tightness and reliability of the seal, and can also reduce the impact during flange connection and play a shock-absorbing role, thereby improving the stability of the seal, and has a simple structure, convenient loading and unloading, and low cost.

[0027] See also Figures 1 to 3 The high-temperature fluid sealing structure of the carbonization furnace includes: a furnace body 1 and two side plates 2, wherein protrusions formed by the ends of the furnace body 1 protruding outward are arranged along the edges of both ends of the furnace body 1; the two side plates 2 are respectively covered at both ends of the furnace body 1, and the sides of the two side plates 2 close to the furnace body 1 are both provided with recessed portions formed by one side of the side plate 2 being recessed inwardly, and the positions of the recessed portions and the protruding portions correspond to each other to accommodate the protruding portions, so that the side plates 2 and the furnace body 1 form a sealed connection.

[0028] In this solution, the interior of the furnace body 1 is used to accommodate high-temperature molten salt with a temperature as high as 400°C. The two side panels 2 are respectively covered at the two ends of the furnace body 1 to form an integral body with the furnace body 1. By arranging protrusions formed by the ends of the furnace body 1 protruding outward at both ends of the furnace body 1, recessed portions corresponding to the positions of the protruding portions are arranged on the two side panels 2. The recessed portions can accommodate the protruding portions when the side panels 2 are connected to the furnace body 1, so that the side panels 2 and the furnace body 1 are sealed and connected, and the front and rear docking flanges of the carbonization furnace are sealed and connected to the front and rear side panels 2 using concave and convex surfaces.

[0029] See also Figure 1 and Figure 2In order to realize high-temperature operation of the carbonization furnace, in this embodiment, the device for ensuring the sealing of the high-temperature fluid in the carbonization furnace also includes a stirring device 3, a xenon gas inlet 4, a xenon gas outlet 5, a temperature sensor 6, a feed port 7, an exhaust port 8, a sampling port 9, a salt outlet 10, a discharge port 11, a salt inlet 12 and a base 13, wherein the stirring device 3 is used to stir the materials in the furnace body 1 to make the heat exchange between the feed sludge and the molten salt layer more uniform; the xenon gas inlet 4 and the xenon gas outlet 5 are used to introduce and discharge xenon gas respectively; the temperature sensor 6 is used to measure the temperature at different positions; the feed port 7 It is used to input materials, and the raw materials can be stably input into the equipment to facilitate subsequent processing; the exhaust port 8 is used to discharge the steam generated during the heat exchange of materials; the sampling port 9 is used to collect materials in the equipment to facilitate subsequent detection and analysis; the salt outlet 10 is used to discharge the molten salt after it fills the cylinder interlayer; the material outlet 11 is used to discharge the material in the furnace to ensure that the material can flow out of the equipment smoothly for subsequent detection; the salt inlet 12 is used to transport molten salt into the furnace, which can ensure that the molten salt is safely and effectively introduced into the equipment for heat exchange and other processes.

[0030] Specifically, a base 13 is also provided at the bottom of the furnace body 1, which is used to provide stable support for the carbonization furnace. The stirring device 3 is horizontally installed in the furnace body 1, and its two ends are respectively installed on the two side panels 2 through bearing seats 31. The xenon gas inlet 4 and the xenon gas outlet 5 are respectively arranged on the two side panels 2. One or more temperature sensors 6 are arranged on the two side panels 2 and the furnace body 1. The furnace body 1 is also provided with the feed port 7, exhaust port 8, sampling port 9, salt outlet 10, material outlet 11 and salt inlet 12, and each gas port and material port is provided with a valve that can be opened and closed.

[0031] It should be noted that in the present embodiment, there is no restriction on the specific form of the stirring device 3, which mainly includes a stirring shaft arranged inside the furnace body 1 and a driving motor connected to the stirring shaft, so that the stirring shaft is driven to rotate by the driving motor to achieve stirring of the material inside the furnace body 1, so that the heat exchange between the feed sludge and the molten salt layer is more uniform.

[0032] Furthermore, in order to ensure the safety of on-site workers, insulation layers are provided on the outer sides of the furnace body 1 and the side panels 2 to prevent workers from contacting the furnace body 1 and being scalded, while also keeping the materials in the furnace body 1 warm.

[0033] Preferably, the insulation layer is insulation cotton with a thickness of 80 mm, and the insulation layer is composed of multiple pieces of insulation cotton, and the multiple pieces of insulation cotton are spliced ​​and wrapped around the outside of the side plate 2 of the furnace body 1.

[0034] See also Figures 1 to 6In order to ensure the stability of the installation of the furnace body 1 and the side panels 2, the furnace body 1 and the side panels 2 at both ends are connected by flanges. In this embodiment, the furnace body 1 includes an inner tube 102 and two flanges 103 sleeved on the outer sides of the two ends of the inner tube 102. The two sides of the flanges 103 facing away from each other are respectively located on the same plane as the two end surfaces of the inner tube 102. The flanges 103 are evenly provided with a plurality of bolt holes along their circumferences, and are connected to the side panels 2 by bolts 104. Specifically, a first through hole 105 is provided on the flange 103, and a second through hole 202 is provided on the side panel 2 at a position corresponding to the first through hole 105. Bolts 104 are used to pass through the first through hole 105 and the second through hole 202, and a pre-tightening nut is provided at the other end of the bolt 104. By tightening the pre-tightening nut, the furnace body 1 and the side panel 2 can be fixed.

[0035] Furthermore, the protrusion is arranged on the flange 103, and each of the bolts 104 is located at the edge of the side plate and at the outer side of the protrusion. The protrusion and the recessed portion can not only achieve a sealed connection between the furnace body 1 and the side plate 2, but also isolate the connection position of the material and the bolt 104.

[0036] Preferably, in some embodiments, the protrusion includes a bump 101, and the recessed portion includes a groove 201, and both the bump 101 and the groove 201 are arranged in an annular shape, and the bump 101 is arranged around the end surface edge of the furnace body 1 with the central axis of the furnace body 1 as a reference; the groove 201 is arranged on the side of the side panel 2 close to the furnace body 1; during implementation, after the side panel 2 is installed, the groove 201 on the side panel 2 can be correspondingly stuck on the bump 101 of the furnace body 1, so that the groove 201 and the bump 101 are fitted and plugged into each other to achieve sealing of the two; the bump 101 and the groove 201 are both arranged in an annular shape, which can not only form a closed annular seal on the outside of the furnace mouth of the furnace body 1, but also, after the side panel 2 is placed at the end of the furnace body 1, the flange can be centered and positioned by rotating the side panel 2, so as to facilitate position adjustment.

[0037] In order to improve the sealing performance of the furnace body 1, in the present embodiment, the groove 201 is adapted to the protrusion 101, the depth of the groove 201 is close to the thickness of the protrusion 101 (matching each other at a certain tolerance level), and the opposite side walls of the groove 201 are tightly matched with the opposite sides of the protrusion 101, so that after installation, all surfaces of the protrusion 101 can be tightly matched with all surfaces of the groove 201 to ensure the stability of the seal.

[0038] Preferably, in this embodiment, the matching tolerance between the groove 201 and the protrusion 101 is IT7.

[0039] Furthermore, two of the protrusions 101 and two of the grooves 201 are provided, and the two protrusions 101 and the two grooves 201 are coaxial and spaced apart to achieve double-layer sealing.

[0040] It should be noted that the present solution does not limit the number of bumps 101 and grooves 201 , and two or more bumps 101 and grooves 201 may be provided according to actual conditions.

[0041] See also Figure 7 In other embodiments, the protrusion 101 can also be set as an arc structure, and multiple protrusions 101 are set, and are sequentially arranged around the outer side of the end surface of the furnace body 1. Two adjacent protrusions 101 are connected and partially staggered, so that after the side plate 2 is installed on one side of the furnace body 1, the second through hole 202 of the furnace body 1 can correspond to the first through hole 105 of the flange 103 in sequence, and the side plate 2 cannot rotate at the end of the furnace body 1, which can not only form a seal at the furnace mouth of the furnace body 1, but also locate the position of the side plate 2. Of course, the protrusion 101 can also be in other forms, and its structure is not limited to this.

[0042] During implementation, first close the discharge port 11, add materials through the feed port 7 and close it, introduce high-temperature (400°C) molten salt fluid into the salt inlet 12, and when the molten salt fluid flows out of the salt outlet 10, start stirring the stirring device 3, and use the frequency conversion speed regulation of the stirring device 3. The scraper in the stirring device 3 flips in the furnace body 1 to make the material and the molten salt exchange heat evenly, which lasts for about 20 to 30 minutes. The material temperature and the molten salt operating temperature are monitored by the temperature sensor 6, and the data of the xenon gas inlet 4 and the xenon gas outlet 5 are compared to take the tar amount. Finally, open the discharge port 11 and take out the material.

[0043] The utility model uses protruding parts and recessed parts respectively arranged on the furnace body 1 and the side plate 2, so that the front and rear butt flanges of the carbonization furnace are sealed and connected with the front and rear side plates 2 by using the concave and convex surfaces. By adopting this sealing method, the protruding part between the recessed part and the irregular surface can absorb larger deformation, thereby increasing the contact area between the side plate 2 and the flange sealing surface with low concentricity, effectively preventing leakage of high-temperature fluid, and improving the tightness and reliability of the seal; secondly, it can reduce the impact during flange connection and play a shock-absorbing role, thereby improving the stability of the seal; and it has a simple structure, is easy to load and unload, and is low in cost; it solves the problems of easy adhesion, temperature difference resistance, short shelf life, easy aging, cracking, and high cost in the sealing of sealants and sealing gaskets in the prior art.

[0044] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A high temperature fluid sealing structure for a carbonization furnace, characterized in that: include: A furnace body, wherein the edges of both ends of the furnace body are provided with protrusions formed by the ends of the furnace body protruding outwards; as well as, Two side panels are respectively covered at both ends of the furnace body, and one side of the two side panels close to the furnace body is provided with a recessed portion formed by an inward recess of one side of the side panel, and the position of the recessed portion corresponds to the position of the protruding portion to accommodate the protruding portion, so that the side panel and the furnace body form a sealed connection.

2. The high temperature fluid sealing structure of the carbonization furnace according to claim 1, characterized in that: The protruding portion includes a bump, which is arranged around the end surface edge of the furnace body with the central axis of the furnace body as a reference; the recessed portion includes a groove, which is arranged on a side of the side plate close to the furnace body, and the groove is fitted and plugged into the bump.

3. The high temperature fluid sealing structure of the carbonization furnace according to claim 2, characterized in that: The groove is matched with the protrusion, and the opposite side walls of the groove are tightly matched with the opposite sides of the protrusion.

4. The high temperature fluid sealing structure of the carbonization furnace according to claim 3, characterized in that: The protrusion and the groove are both arranged in an annular shape.

5. The high temperature fluid sealing structure of the carbonization furnace according to claim 4, characterized in that: Two of the protrusions and two of the grooves are provided, and the two protrusions and the two grooves are coaxial and spaced apart.

6. The high temperature fluid sealing structure of the carbonization furnace according to claim 1, characterized in that: The furnace body comprises an inner tube and two flanges sleeved on the outer sides of the two ends of the inner tube, the two flanges have opposite sides respectively located on the same plane as the two end surfaces of the inner tube, and the protrusions are arranged on the flanges.

7. The high temperature fluid sealing structure of the carbonization furnace according to claim 6, characterized in that: The flange is evenly provided with a plurality of bolt holes along its circumference, and is connected to the side plate through bolts.

8. The high temperature fluid sealing structure of the carbonization furnace according to claim 7, characterized in that: Each of the bolts is located at an edge of the side plate.

9. The high temperature fluid sealing structure of the carbonization furnace according to claim 1, characterized in that: The high-temperature fluid sealing structure of the carbonization furnace also includes a stirring device, a xenon gas inlet, a xenon gas outlet, a temperature sensor, a feed port, an exhaust port, a sampling port, a salt outlet, a material outlet and a salt inlet. The stirring device is horizontally installed in the furnace body, and its two ends are respectively installed on two side panels. The xenon gas inlet and the xenon gas outlet are respectively arranged on the two side panels. The temperature sensor is arranged on the two side panels and the furnace body. The furnace body is also provided with the feed port, the exhaust port, the sampling port, the salt outlet, the material outlet and the salt inlet.

10. The high temperature fluid sealing structure of the carbonization furnace according to claim 1, characterized in that: The outer sides of the furnace body and the side plates are both provided with heat-insulating layers.

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