Dynamic seal cooling device of horizontal high-temperature cracking furnace

Abstract

The utility model belongs to the technical field of tar residue pyrolysis, and particularly relates to a dynamic seal cooling device of a horizontal high-temperature cracking furnace. By arranging the cooling device, the working temperature of the packing can be effectively reduced, the cooling device is of a hollow annular structure, heat is taken away through flowing of circulating liquid, and therefore the service life of the packing is greatly prolonged. Therefore, the requirement for frequently replacing the packing is reduced, and the maintenance cost is reduced. Due to the fact that the durability of the packing is improved, the shutdown time of a machine due to the fact that the packing is replaced is greatly shortened, for production enterprises, the higher equipment utilization rate and the more stable production process are achieved, and economic losses caused by shutdown are reduced. The cooling device is designed into the first arc-shaped pipeline and the second arc-shaped pipeline which are symmetrical, so that the circulating liquid can uniformly flow through the whole cooling device, and the cooling effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tar residue pyrolysis technical field, specifically relates to a dynamic sealing cooling device of horizontal high temperature pyrolysis furnace. BACKGROUND

[0002] With the continuous improvement of environmental awareness, tar residue treatment has become an important problem. The traditional tar residue treatment method is low in efficiency, high in cost and serious in pollution, and causes inevitable influence on the environment. The continuous pyrolysis technology of tar residue is one of the emerging tar residue treatment technologies, which is a technology for heating tar residue to high temperature to decompose it into gas, liquid and solid substances. This technology has high efficiency, low processing cost and good environmental protection, and can also recover useful substances such as tar, gasoline and diesel oil, and has high economic value.

[0003] And dynamic sealing is one of the key technologies to realize industrial continuous pyrolysis, that is, to ensure that tar residue continuously enters the pyrolysis furnace and solid products continuously discharge from the pyrolysis furnace, prevent air from entering the pyrolysis furnace and avoid oil gas leakage in the pyrolysis furnace, realize the isolation of air and oil gas, and the pyrolysis of tar residue and the transportation of products are all carried out in closed equipment and pipelines, which fundamentally eliminates the occurrence of leakage. Under the condition of no oxygen or poor oxygen, safe, stable and continuous pyrolysis is the key to realize continuous pyrolysis.

[0004] Now the tar residue high temperature pyrolysis furnace includes hot air smoke box and rear head, and the main machine rotating cylinder respectively opposite rotating with the hot air smoke box and the rear head, the hot air smoke box and the main machine rotating cylinder, the main machine rotating cylinder and the rear head are all realized dynamic sealing through packing; The existing problem is that the temperature of tar residue high temperature pyrolysis furnace is as high as 510 DEG C, and the maximum tolerance temperature of packing is 450 DEG C, and the running under the condition of continuous high temperature will cause the durability of packing to be greatly reduced, and each packing will be damaged after using for several days under high temperature, forcing the machine to stop to replace the new packing, shutdown means shutdown, which will bring very high production cost to the production enterprise, therefore, an apparatus for cooling the packing is urgently needed to improve the durability of the packing and reduce the loss of the enterprise.

[0005] Therefore, the utility model is proposed. UTILITY MODEL CONTENT

[0006] The utility model aims at overcoming the defects of the prior art, and provides a dynamic sealing cooling device of horizontal high temperature pyrolysis furnace.

[0007] In order to achieve the above object, the utility model provides the following technical scheme:

[0008] A dynamic sealing cooling device of a horizontal high-temperature pyrolysis furnace, comprising a pyrolysis furnace for high-temperature pyrolysis of tar residue, the pyrolysis furnace comprising a fixedly arranged hot air smoke box, a main machine rotating cylinder rotatably fixed with the hot air smoke box and used for containing tar residue to be pyrolyzed, one end of the main machine rotating cylinder extending out of the hot air smoke box and being rotatably fixed with a rear head used for receiving tar residue after completion of pyrolysis, the rear head being rotatably connected with the main machine rotating cylinder, a smoke packing being arranged between the hot air smoke box and the main machine rotating cylinder and used for preventing leakage of hot air, and an oil gas packing being arranged between the rear head and the main machine rotating cylinder and used for preventing leakage of oil gas.

[0009] The smoke packing is axially limited by a first flange pressing disc fixed on the hot air smoke box, and the oil gas packing is axially limited by a second flange pressing disc fixed on the rear head; the smoke packing and the oil gas packing are each provided with a cooling device used for cooling in a circumferential direction, each of the cooling devices being a hollow annular structure adapted to the shape of the smoke packing and the oil gas packing respectively and facilitating circulation of liquid, each of the cooling devices being provided with a liquid inlet at a bottom and a liquid outlet at a top; the cooling device of the smoke packing and the cooling device of the oil gas packing are identical in structure and share a cooling tower, a cooling water tank and a circulating water pump.

[0010] Specifically, the hot air smoke box is fixedly provided with a first limiting table, the smoke packing is axially limited by the first limiting table and the first flange pressing disc, the rear head is fixedly provided with a second limiting table, and the oil gas packing is axially limited by the second limiting table and the second flange pressing disc; the first limiting table and the second limiting table are annular structures.

[0011] Specifically, the liquid outlet is further connected in sequence with the cooling tower, the cooling water tank, the circulating water pump and the liquid inlet.

[0012] Specifically, the cooling device is composed of a first arc-shaped pipeline and a second arc-shaped pipeline which are symmetrical to each other, the first arc-shaped pipeline is provided with a first liquid inlet at a bottom and a first liquid outlet at a top, the second arc-shaped pipeline is provided with a second liquid inlet at a bottom and a second liquid outlet at a top, the first liquid outlet and the second liquid outlet are connected in sequence with the cooling tower and the cooling water tank after converging, and the cooling water tank is connected in sequence with the first liquid inlet and the second liquid inlet through the circulating water pump.

[0013] Specifically, the first arc-shaped pipeline is composed of a plurality of discontinuous short pipelines, adjacent short pipelines are connected through small arc-shaped pipelines facilitating increase of residence time of circulating liquid, and the small arc-shaped pipelines are located at a side of the first arc-shaped pipeline away from the main machine rotating cylinder.

[0014] Specifically, the circulating liquid can be one of water, heat-conducting oil and refrigerant.

[0015] Specifically, the cross section of each cooling device is square structure, and the surface of the cooling device contacting with the hot air smoke box is attached with aluminum silicate industrial rock wool for preventing energy loss of the hot air smoke box.

[0016] Specifically, the first flange pressure disc is detachably connected with the hot air smoke box through a screw rod and a nut, and the second flange pressure disc is detachably connected with the rear head through a screw rod and a nut.

[0017] Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

[0018] The utility model discloses a cooling device can effectively reduce the working temperature of the packing, and the hollow annular structure is adopted to the cooling device, and the heat is taken away through the circulation of liquid, thereby greatly prolonging the service life of the packing.

[0019] Further, the cooling device is designed as symmetrical first arc-shaped pipeline and second arc-shaped pipeline, and each pipeline is provided with an inlet at the bottom and an outlet at the top.

[0020] Further, the cooling device and the components such as the cooling tower, the cooling water tank and the circulating water pump form a complete cooling system, thereby ensuring the stability and reliability of the cooling process. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings incorporated in and forming a part of the specification, illustrate the embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other accompanying drawings can also be obtained by those skilled in the art without any creative labor under the premise of the accompanying drawings.

[0023] Figure 1 is the sectional view of the embodiment;

[0024] Figure 2 is the A direction partial section enlarged schematic view of Figure 1 ​

[0025] Figure 3 The cooling device structure schematic diagram of Example 1 of the present embodiment;

[0026] Figure 4 The cooling device structure schematic diagram of Example 2 of the present embodiment;

[0027] Figure 5 The cooling device structure schematic diagram of Example 3 of the present embodiment.

[0028] Wherein: 1 is a cracking furnace; 11 is a first flange pressure disc; 12 is a second flange pressure disc; 13 is a screw rod; 14 is a hot air smoke box; 15 is a main machine rotating cylinder; 16 is a first limiting table; 17 is a second limiting table; 2 is a rear head; 3 is a flue gas packing; 4 is an oil gas packing; 5 is a cooling device; 51 is a first arc-shaped pipeline; 52 is a second arc-shaped pipeline; 53 is a short pipeline; 54 is a small arc-shaped pipeline; 6 is a circulating liquid inlet; 61 is a first circulating liquid inlet; 62 is a second circulating liquid inlet; 7 is a circulating liquid outlet; 71 is a first circulating liquid outlet; 72 is a second circulating liquid outlet; 8 is a cooling tower; 9 is a cooling water tank; 10 is a circulating water pump. DETAILED DESCRIPTION

[0029] The exemplary embodiments will be described in detail herein below with reference to the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present embodiment. Rather, they are merely examples consistent with some aspects of the present embodiment as detailed in the appended claims; the cooling device for flue gas packing and the cooling device for oil gas packing are two annular devices with the same structure, and the two cooling devices share a cooling tower, a cooling water tank, and a circulating water pump.

[0030] In order for those skilled in the art to better understand the technical solutions of the present embodiment, the present embodiment will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] Example 1

[0032] Referring to Figures 1-3 The present embodiment provides a dynamic sealing cooling device for a horizontal high-temperature cracking furnace, which comprises a cracking furnace 1 for high-temperature cracking of tar residue, the cracking furnace 1 comprising a fixedly arranged hot air smoke box 14, a main machine rotating cylinder 15 rotatably fixed with the hot air smoke box 14 and used for containing tar residue to be cracked, one end of the main machine rotating cylinder 15 extending out of the hot air smoke box 14 and further rotatably fixed with a rear head 2 used for receiving tar residue after cracking is completed, the rear head 2 being rotatably connected with the main machine rotating cylinder 15, and a flue gas packing 3 being arranged between the hot air smoke box 14 and the main machine rotating cylinder 15 and used for preventing hot air from leaking out, and an oil gas packing 4 being arranged between the rear head 2 and the main machine rotating cylinder 15 and used for preventing oil gas from leaking out.

[0033] The flue gas packing 3 is axially limited by the first flange pressing disc 11 fixed on the hot air flue 14, and the oil gas packing 4 is axially limited by the second flange pressing disc 12 fixed on the back head 2; the circumferences of the flue gas packing 3 and the oil gas packing 4 are provided with cooling devices 5 for cooling, each of the cooling devices 5 is a hollow annular structure for facilitating the circulation of liquid and is shaped to match the flue gas packing 3 and the oil gas packing 4 respectively, and the bottom of each of the cooling devices 5 is provided with a liquid inlet 6 and the top is provided with a liquid outlet 7. Figure 3 As shown in the drawings.

[0034] Specifically, the hot air flue 14 is fixed with a first limiting table 16, the flue gas packing 3 is axially limited by the first limiting table 16 and the first flange pressing disc 11, and the back head 2 is fixed with a second limiting table 17, and the oil gas packing 4 is axially limited by the second limiting table 17 and the second flange pressing disc 12.

[0035] Specifically, the liquid outlet 7 is further connected in sequence with a cooling tower 8, a cooling water tank 9, a circulating water pump 10 and the liquid inlet 6.

[0036] Specifically, the circulating liquid can be one of water, heat-conducting oil and refrigerant.

[0037] Specifically, the cross section of each of the cooling devices 5 is a square structure, and the surface of the cooling device 5 in contact with the hot air flue 14 is attached with industrial rock wool of aluminum silicate to prevent energy loss of the hot air flue 14.

[0038] Specifically, the first flange pressing disc 11 is detachably connected with the hot air flue 14 through a screw rod 13 and a nut, and the second flange pressing disc 12 is detachably connected with the back head 2 through the screw rod 13 and the nut.

[0039] As shown in the drawings, the embodiment further provides a running method of the dynamic sealing cooling device, which is specifically as follows. Figure 3 As shown in the drawings, the embodiment further provides a running method of the dynamic sealing cooling device, which is specifically as follows.

[0040] When the horizontal high-temperature pyrolysis furnace starts to run, the circulating water pump 10 is first opened, the circulating liquid is made to enter the two cooling devices 5 from the cooling water tank 9 through the liquid inlet 6, so as to effectively cool the flue gas packing 3 and the oil gas packing 4, and the use temperature of the flue gas packing 3 and the oil gas packing 4 is reduced to within 450℃; the used circulating liquid is made to enter the cooling tower 8 through the liquid outlet 7 for cooling, and then enters the cooling water tank 9 for storage, so as to continue to circulate and cool the flue gas packing 3 and the oil gas packing 4.

[0041] Embodiment 2

[0042] The difference between the embodiment and the embodiment 1 is that each of the cooling devices 5 is composed of a first arc-shaped pipeline 51 and a second arc-shaped pipeline 52 which are symmetrical to each other, the bottom of the first arc-shaped pipeline 51 is provided with a first circulating liquid inlet 61, the top of the first arc-shaped pipeline 51 is provided with a first circulating liquid outlet 71, the bottom of the second arc-shaped pipeline 52 is provided with a second circulating liquid inlet 62, the top of the second arc-shaped pipeline 52 is provided with a second circulating liquid outlet 72, the first circulating liquid outlet 71 and the second circulating liquid outlet 72 are communicated with a cooling water tower 8 and a cooling water tank 9 in sequence after being converged, and the cooling water tank 9 is communicated with the first circulating liquid inlet 61 and the second circulating liquid inlet 62 through a circulating water pump 10. Figure 4 as shown.

[0043] The embodiment also provides a running method of the dynamic sealing cooling device, and specifically as follows.

[0044] The cooling device 5 of the flue gas packing 3 and the cooling device 5 of the oil gas packing 4 are of the same structure, and two cooling devices 5 are connected with a set of the cooling water tower 8, the cooling water tank 9 and the circulating water pump 10; when the horizontal high-temperature pyrolysis furnace starts to run, the circulating water pump 10 is first opened, circulating liquid is made to flow from the cooling water tank 9 through a main pipeline, and then flow into the first arc-shaped pipeline 51 and the second arc-shaped pipeline 52 through the first circulating liquid inlet 61 and the second circulating liquid inlet 62 respectively, so that the flue gas packing 3 and the oil gas packing 4 are effectively cooled, and the use temperature of the flue gas packing 3 and the oil gas packing 4 is reduced to below 450 DEG C; the used circulating liquid is converged after flowing through the first circulating liquid outlet 71 and the second circulating liquid outlet 72 respectively, and then is led to the cooling water tower 8 through a pipeline to be cooled, and then is made to flow into the cooling water tank 9 to continue to cool the flue gas packing 3 and the oil gas packing 4.

[0045] Embodiment 3

[0046] The difference between the embodiment and the embodiment 2 is that the first arc-shaped pipeline 51 is composed of a plurality of discontinuous short pipelines 53, adjacent short pipelines 53 are communicated through small arc-shaped pipelines 54 which are convenient for increasing the residence time of circulating liquid, and the small arc-shaped pipelines 54 are located on the side of the first arc-shaped pipeline 51 which is far away from the main machine rotating cylinder 15; the first arc-shaped pipeline 51 and the second arc-shaped pipeline 52 are of the same structure; as shown in Figure 5 as shown.

[0047] The above merely describes specific embodiments of the present application, so that those skilled in the art can understand or implement the present application. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application.

[0048] It should be understood that the present application is not limited to the above-described embodiments and can be modified and changed in various ways without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A dynamic seal cooling device of a horizontal high-temperature pyrolysis furnace, characterized by, The application relates to a pyrolysis furnace (1) for high-temperature pyrolysis of tar residues, which comprises a fixedly arranged hot air smoke box (14), a main machine rotating cylinder (15) rotatably fixed with the hot air smoke box (14) and used for containing the tar residues to be pyrolyzed, one end of the main machine rotating cylinder (15) extending out of the hot air smoke box (14) and being rotatably fixed with a rear end cover (2) used for receiving the tar residues after the pyrolysis is completed, the rear end cover (2) being rotatably connected with the main machine rotating cylinder (15), a smoke packing (3) being arranged between the hot air smoke box (14) and the main machine rotating cylinder (15) and used for preventing the hot air from leaking out, and an oil gas packing (4) being arranged between the rear end cover (2) and the main machine rotating cylinder (15) and used for preventing the oil gas from leaking out. The smoke packing (3) is axially limited by a first flange pressing disc (11) fixed on the hot air smoke box (14), and the oil gas packing (4) is axially limited by a second flange pressing disc (12) fixed on the rear end cover (2); the smoke packing (3) and the oil gas packing (4) are both circumferentially provided with cooling devices (5) used for cooling; each cooling device (5) is a hollow annular structure which is convenient for circulating liquid flow and is matched with the shape of the smoke packing (3) or the oil gas packing (4); the bottom of each cooling device (5) is provided with a circulating liquid inlet (6), and the top is provided with a circulating liquid outlet (7).

2. The dynamic seal cooling device of claim 1, wherein, The hot air smoke box (14) is fixedly provided with a first limiting table (16), the smoke packing (3) is axially limited by the first limiting table (16) and the first flange pressing disc (11), and the rear end cover (2) is fixedly provided with a second limiting table (17), the oil gas packing (4) is axially limited by the second limiting table (17) and the second flange pressing disc (12).

3. The dynamic seal cooling device of claim 1, wherein, The circulating liquid outlet (7) is further sequentially connected with a cooling tower (8), a cooling water tank (9), a circulating water pump (10) and the circulating liquid inlet (6).

4. The dynamic seal cooling device of claim 1, wherein, The cooling device (5) is composed of a first arc-shaped pipeline (51) and a second arc-shaped pipeline (52) which are symmetrical to each other, the bottom of the first arc-shaped pipeline (51) is provided with a first circulating liquid inlet (61), the top is provided with a first circulating liquid outlet (71), the bottom of the second arc-shaped pipeline (52) is provided with a second circulating liquid inlet (62), and the top is provided with a second circulating liquid outlet (72), the first circulating liquid outlet (71) and the second circulating liquid outlet (72) are sequentially connected with the cooling tower (8) and the cooling water tank (9) after being intersected, and the cooling water tank (9) is connected with the first circulating liquid inlet (61) and the second circulating liquid inlet (62) through the circulating water pump (10).

5. The dynamic seal cooling device of claim 4, wherein, The first arc-shaped pipeline (51) is composed of a plurality of discontinuous short pipelines (53), adjacent short pipelines (53) are connected through small arc-shaped pipelines (54) which are convenient for increasing the residence time of the circulating liquid, and the small arc-shaped pipelines (54) are located on the side of the first arc-shaped pipeline (51) far away from the main machine rotating cylinder (15).

6. The dynamic seal cooling device of claim 1, wherein, The circulating liquid can be one of water, heat-conducting oil and refrigerant.

7. The dynamic seal cooling device of claim 1, wherein, The cross section of each cooling device (5) is square structure, and the surface of the cooling device (5) contacting with the hot air smoke box (14) is attached with aluminum silicate industrial rock wool for preventing energy loss of the hot air smoke box (14).

8. The dynamic seal cooling device of claim 1, wherein, The first flange pressure disc (11) is detachably connected with the hot air smoke box (14) through a screw rod (13) and a nut, and the second flange pressure disc (12) is detachably connected with the rear end cover (2) through a screw rod (13) and a nut.

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