CN216845713U - Sealing device for reducing heat exchange in polymerization furnace - Google Patents
Sealing device for reducing heat exchange in polymerization furnace Download PDFInfo
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- CN216845713U CN216845713U CN202122931097.6U CN202122931097U CN216845713U CN 216845713 U CN216845713 U CN 216845713U CN 202122931097 U CN202122931097 U CN 202122931097U CN 216845713 U CN216845713 U CN 216845713U
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Abstract
The utility model discloses a sealing device for reducing heat exchange in a polymerization furnace.A furnace end sealing box is arranged on the side wall of a furnace body, sealing shields are arranged on the upper wall and the lower wall of the furnace body, the sealing shields are connected with a box sealing annular plate, and the box sealing annular plate is fixedly arranged on the furnace end sealing box through a connecting bolt and a mating flange. The upper and lower outer walls of the furnace body are both provided with aluminum silicate rock wool, silica gel is arranged on the aluminum silicate rock wool, and the aluminum silicate rock wool and the silica gel form an integrated convex heat-insulating layer; the sealing shield is arranged on the upper part of the integrated convex heat-insulating layer, and the sealing box annular plate is arranged on the side part of the integrated convex heat-insulating layer. Adopt above-mentioned structure: along with the change of the temperature in the furnace, the deformation of the furnace body is large, the fixed sealing device is internally provided with the air stop plate, the sealing shield and the convex heat insulation layer to form effective air isolation heat insulation, the air flow rate is further reduced, the heat loss in the furnace is reduced, meanwhile, the abrasion caused by the axial extension of the furnace body is avoided, and the service life of the sealing device is prolonged.
Description
Technical Field
The utility model belongs to the field of chemical drying equipment, and particularly relates to a sealing device for reducing heat exchange in a polymerization furnace.
Background
A polymerization furnace is often used for a plurality of processes in the chemical production process, and the polymerization furnace has the main functions of enabling materials and hot air to exchange heat in the furnace, reducing heat loss, ensuring the stability of the temperature in the furnace and directly influencing product indexes. The seal between the seal box of the head of the polymerization furnace and the furnace body is generally stainless steel blade seal or high temperature resistant silica gel soft seal, the two seals have disadvantages, the feed end of the polymerization furnace is fixed relative to the rotating furnace body in the operation process, the seal surface is damaged after the furnace body is heated and expanded for a long time and the seal rubs for a large-scale polymerization furnace, meanwhile, the seal is easy to deform and become brittle due to the long-term high-temperature baking of the leaves, the gap is enlarged, and the cold air convection enters the furnace to influence the production index.
Disclosure of Invention
The utility model discloses a sealing device for reducing heat exchange in a polymerization furnace, wherein a stainless steel plate is pressed and formed to prepare an annular labyrinth shield, one end of the annular labyrinth shield is tightly welded with a box body of a polymerization furnace end sealing box, a labyrinth heat insulation cover is simultaneously prepared to be butted with an annular plate, a barrel body is simultaneously prepared to be a convex heat insulation layer by adopting high-temperature-resistant silica gel and aluminum silicate rock wool, and a gap is reserved between the seal shield and a furnace body to form a certain air heat insulation layer which is in a concave shape, so that the flow rate of cold air entering the heat insulation cover is reduced, the air intake is further reduced, and the purpose of reducing the heat exchange in the polymerization furnace is achieved.
The purpose of the utility model is realized by the following steps:
a sealing device for reducing heat exchange in a polymerization furnace is characterized in that a furnace end sealing box is arranged on the side wall of the furnace body, sealing shields are arranged on the upper wall and the lower wall of the furnace body and connected with a sealing box annular plate, the sealing box annular plate is fixedly arranged on the furnace end sealing box through a connecting bolt and a mating flange, and a channel is formed by the furnace end sealing box, the furnace body, the sealing shields and the sealing box annular plate.
The upper and lower outer walls of the furnace body are both provided with aluminum silicate rock wool, silica gel is arranged on the aluminum silicate rock wool, and the aluminum silicate rock wool and the silica gel form an integrated convex heat-insulating layer; the sealing protective cover is arranged on the upper part of the integrated convex heat-insulating layer, and the box sealing annular plate is arranged on the side part of the integrated convex heat-insulating layer, so that a labyrinth heat-insulating structure is formed.
The inner diameter of the sealing shield is 600-800 mm longer than the outer diameter of the furnace body, so that an air heat insulation gap is formed between the furnace body and the inner cylinder of the sealing shield.
And (3) polishing the furnace end sealing box smoothly, manufacturing a sealing box annular plate (2800 x 2600 x 4), welding the sealing box annular plate on a mating flange piece in a seamless mode, and fixing the sealing box annular plate on the mating flange piece by adopting high-strength bolts.
The structure of the ring plate of the enclosure is a circular ring (2800 x 2600 x 4) laser cut from stainless steel plate.
The tail end of the sealing shield is inwardly flanged by 100 mm-150 mm to form a wind stop plate, so that no friction with a furnace body is ensured, and a cold air inlet is formed at the upper part and the lower part.
The inner diameter of the air stopping plate is 300-500 mm longer than the outer diameter of the furnace body, so that the friction between the furnace body and the air stopping plate after the furnace body is heated and expanded is avoided.
A material feed opening is arranged in a channel formed by the furnace body and the furnace end sealing box; the furnace end sealing box is provided with a hot air inlet.
The device adopts stainless steel square pipe at last for support column one end and guard shield welding, and the other end and polymerization furnace steel support butt joint ensure that the guard shield atress is even indeformable.
The sealing device for reducing the heat exchange in the polymerization furnace has the following beneficial effects by adopting the structure:
(1) the problems that the sealing body is easy to deform and crisp after being baked at high temperature for a long time, and the furnace body is easy to wear and seal due to axial expansion and contraction of the temperature are solved.
(2) A certain gap is left between the sealing shield and the polymerization furnace cylinder body, so that the polymerization furnace cylinder body can not rub the sealing shield due to thermal expansion at the operation temperature, and a labyrinth passage is formed to reduce the flow rate of cold air, reduce the air inlet amount and achieve the purpose of reducing the heat exchange in the furnace.
(3) The sealing shield is fixed on the steel structure bracket of the polymerization furnace, so that the sealing shield does not rotate along with the furnace body, and the service life of the sealing shield can be prolonged.
Drawings
The utility model is further illustrated with reference to the following figures and examples:
FIG. 1 is a front view of a sealing device for reducing heat exchange in a polymerization furnace.
FIG. 2 is a side view of a sealing device for reducing heat exchange in a polymerization furnace.
In the figure: the furnace comprises a cold air inlet 1, a sealing box 2, a hot air inlet 3, a material feed opening 4, high-strength bolts 5, a companion flange 6, an annular plate 7, a sealing shield 8, high-temperature-resistant silica gel 9, an air stop plate 10, aluminum silicate rock wool 11 and a furnace body 12.
Detailed Description
The utility model provides a reduce sealing device of heat exchange in polymerization furnace, 12 lateral walls of furnace body are provided with furnace end joint sealing 2, and 12 upper walls of furnace body, lower wall all are provided with sealed guard shield 8, and sealed guard shield 8 is connected with joint sealing annular plate 7, and joint sealing annular plate 7 passes through connecting bolt 5 and companion flange 6 fixed the setting on furnace end joint sealing 2, and furnace end joint sealing 2 and furnace body 12, sealed guard shield 8, joint sealing annular plate 7 form the passageway. In order to prevent the sealing shield 8 from deforming due to heat, the sealing shield 8 may be further provided with a stainless steel supporting device.
The upper outer wall and the lower outer wall of the furnace body 12 are both provided with aluminum silicate rock wool 11, silica gel 9 is arranged on the aluminum silicate rock wool 11, and the aluminum silicate rock wool 11 and the silica gel 9 form an integrated convex heat-insulating layer; the sealing shield 8 is arranged on the upper part of the integrated convex heat-insulating layer, and the box sealing annular plate 7 is arranged on the side part of the integrated convex heat-insulating layer, so that a labyrinth heat-insulating structure is formed.
The inner diameter of the sealing shield 8 is equal to the outer diameter of the furnace body 12 plus 600mm, so that an air heat insulation gap is formed between the furnace body 12 and the inner cylinder of the sealing shield 8.
The ring plate 7 is constructed as a sanitary stainless steel laser cut ring (2800 x 2600 x 4) welded to a companion flange 6 in a seamless manner using high strength bolts 5. The shroud 8 was formed (2800 x 3000) from a 4mm stainless steel coil welded to the outer edge of the box-sealing annular plate 7, using the outer edge of the box-sealing annular plate 7 as the reference.
The sealing shield 8 has 100mm inward turned edge to form a wind stop plate 10, and ensures no friction with the furnace body 12, and forms a cold air inlet 1 at the upper and lower parts.
The inner diameter of the air stop plate 10 is equal to the outer diameter of the furnace body 12 plus 300mm, so that the friction between the furnace body 12 and the air stop plate 10 after being heated and expanded is avoided.
A material feed opening 4 is arranged in a channel formed by the furnace body 12 and the furnace end sealing box 2; the furnace end sealing box 2 is provided with a hot air inlet 3.
The outer wall of the cylinder body 12 is made of high-temperature-resistant silica gel 9 and aluminum silicate rock wool 10 to form a convex heat-insulating layer, and a labyrinth heat-insulating cover is formed by the convex heat-insulating layer and the sealing shield 8, so that the purpose of reducing heat loss caused by hot air entering the furnace body 12 from the inlet 3 and exchanging cold air is achieved, and the material is ensured to enter the furnace from the feed opening 4, and the self heat loss is small.
This novel adoption above-mentioned structure: the device is suitable for large-scale rotary furnaces, the annular plate 7 is manufactured by pressing and forming a stainless steel plate and is tightly welded with the furnace end sealing box 2, the sealing protective cover 8 is manufactured to be in butt joint with the annular plate 7, a certain air heat insulation layer is formed by a gap between the sealing protective cover and the furnace body 12 and is in a concave shape, the convex heat insulation layer is manufactured on the outer wall of the cylinder body 12 by adopting high-temperature-resistant silica gel 9 and aluminum silicate rock wool 10, and the labyrinth heat insulation cover is formed by the sealing protective cover 8 to reduce the flow rate of cold air entering the furnace, further reduce the air intake amount and further achieve the purpose of reducing heat exchange in the polymerization furnace.
The utility model adopts the structure as follows: along with the change of the temperature in the furnace, the deformation of the furnace body is large, the air stop plate 10 and the sealing shield 8 are butted with the annular plate 7, and a certain air heat insulation layer is formed between the air stop plate and the annular plate and the furnace body 12 and is shaped like a Chinese character 'ao'. In addition, the outer wall of the furnace body 12 is made of a convex heat-insulating layer made of high-temperature-resistant silica gel 9 and aluminum silicate rock wool 10, effective air isolation and heat insulation are formed between the furnace body 12, air flow rate is further reduced, heat loss in the furnace is reduced, abrasion caused by axial expansion of the furnace body is avoided, and the service life of the sealing shield 8 is prolonged.
Finally, the sealing shield 8 is fixed on the steel structure support 1 of the polymerization furnace by adopting a stainless steel square tube supporting upright column, so that the sealing shield 8 is uniformly stressed and does not deform, the sealing shield does not rotate along with the furnace body, and the service life of the sealing shield is further prolonged.
Claims (7)
1. A sealing device for reducing heat exchange in a polymerization furnace, characterized in that: the side wall of the furnace body (12) is provided with a furnace end sealing box (2), the upper wall and the lower wall of the furnace body (12) are respectively provided with a sealing shield (8), the sealing shields (8) are connected with a sealing box annular plate (7), the sealing box annular plate (7) is fixedly arranged on the furnace end sealing box (2) through a connecting bolt (5) and a mating flange (6), and the furnace end sealing box (2) forms a channel with the furnace body (12), the sealing shields (8) and the sealing box annular plate (7).
2. The sealing device for reducing heat exchange in a polymerization furnace according to claim 1, wherein: the upper outer wall and the lower outer wall of the furnace body (12) are both provided with aluminum silicate rock wool (11), silica gel (9) is arranged on the aluminum silicate rock wool (11), and the aluminum silicate rock wool (11) and the silica gel (9) form an integrated convex heat-insulating layer; the sealing shield (8) is arranged on the upper part of the integrated convex heat-insulating layer, and the sealing box annular plate (7) is arranged on the side part of the integrated convex heat-insulating layer, so that a labyrinth heat-insulating structure is formed.
3. The sealing device for reducing heat exchange in a polymerization furnace according to claim 2, wherein: the inner diameter of the sealing shield (8) is 600-800mm longer than the outer diameter of the furnace body (12), so that an air heat insulation gap is formed between the furnace body (12) and the inner cylinder of the sealing shield (8).
4. The sealing device for reducing heat exchange in a polymerization furnace according to claim 1, wherein: the structure of the box sealing annular plate (7) is a circular ring formed by laser cutting of a stainless steel plate.
5. The sealing device for reducing heat exchange in a polymerization furnace according to claim 1, wherein: the tail end of the sealing shield (8) is inwardly folded by 100mm-150mm to form a wind stop plate (10), and simultaneously, no friction with the furnace body (12) is ensured, and a cold air inlet (1) is formed at the upper part and the lower part.
6. The sealing device for reducing heat exchange in a polymerization furnace according to claim 5, wherein: the inner diameter of the air stop plate (10) is 300-500 mm longer than the outer diameter of the furnace body (12), so that the friction between the furnace body (12) and the air stop plate (10) after being heated and expanded is avoided.
7. The sealing device for reducing heat exchange in a polymerization furnace according to claim 1, wherein: a material feed opening (4) is arranged in a channel formed by the furnace body (12) and the furnace end sealing box (2); the furnace end sealing box (2) is provided with a hot air inlet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122931097.6U CN216845713U (en) | 2021-11-26 | 2021-11-26 | Sealing device for reducing heat exchange in polymerization furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122931097.6U CN216845713U (en) | 2021-11-26 | 2021-11-26 | Sealing device for reducing heat exchange in polymerization furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216845713U true CN216845713U (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122931097.6U Active CN216845713U (en) | 2021-11-26 | 2021-11-26 | Sealing device for reducing heat exchange in polymerization furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216845713U (en) |
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2021
- 2021-11-26 CN CN202122931097.6U patent/CN216845713U/en active Active
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