A regenerative tar burner

Abstract

The present invention belongs to the technical field of tubular furnace burners, and particularly relates to a regenerative tar burner, which includes a combustion head, a regenerative cylinder and a heat transfer cylinder. There is a gap between the regenerative cylinder and the heat transfer cylinder, and the bottoms of the regenerative cylinder and the heat transfer cylinder are fixedly connected through a sealing plate; both the regenerative cylinder and the heat transfer cylinder are of hollow structures, the regenerative cylinder has a heat storage cavity, and the heat transfer cylinder has a heat transfer cavity; the combustion head includes a gas pipe, an air inlet cylinder and an air outlet cover, and the air inlet cylinder is fixedly connected to the sealing plate; there is a gap between the regenerative cylinder and the heat transfer cylinder, and the pipeline of the tubular furnace is located between the regenerative cylinder and the heat transfer cylinder. The water in the heat transfer cylinder absorbs and transfers heat, and the heat-conducting oil in the regenerative cylinder absorbs and stores heat, so that the pipeline located between the regenerative cylinder and the heat transfer cylinder can absorb heat more evenly, and the flame generated by the combustion head during this process will not directly heat the pipeline, thus playing a role in protecting the pipeline.

Description

Technical Field

[0001] The present invention belongs to the technical field of tubular furnace burners, and particularly relates to a regenerative tar burner. Background Art

[0002] A tubular furnace is an industrial heating device widely used in industries such as petroleum, chemical, pharmaceutical, and food processing. It mainly consists of one or more long straight tubes, which are usually placed in an enclosed furnace chamber. The design of the tubular furnace allows it to heat materials during continuous or intermittent production processes.

[0003] However, the burners used in existing tubular furnaces usually heat through the bottom method, resulting in poor heating effects of the pipes inside the furnace chamber.

[0004] For this reason, the utility model patent with the patent application number 202223250982.9 discloses a coke tubular furnace, which controls the flame height in the combustion chamber to keep the temperature of the heating furnace tubes within a suitable range, reduce the generation of coke nuclei, and thus slow down or even eliminate the blockage problem of the heating furnace tubes. However, the adjustment range of its flame height is limited and can only be achieved through fixed three-stage air-assisted combustion channels. Moreover, its flame directly heats the internal pipes, and there are also defects of uneven heating.

[0005] The invention patent with the patent application number 202311012310.0 discloses a tubular furnace with adjustable heat distribution ratio. The upward thrust of the flame in this tubular furnace causes the spiral fins to drive the middle column to rotate, and the annular gear drives the rotating pipe to rotate. The rotating pipe can heat the internal medium more evenly, thereby improving the heating effect and reaction effect of the internal medium. And the rotating rotating pipe causes the internal medium to flow in the circumferential direction, and the medium can contact the inner wall of the rotating pipe more evenly, and the heating effect of the medium is more uniform. Although this tubular furnace can improve the heating uniformity, it mainly achieves this by changing the pipeline structure. Its pipeline needs to rotate, and problems such as sealing and flue gas erosion need to be considered. It is inevitable that the rotation part will get stuck during long-term operation. Summary of the Invention

[0006] In view of the above technical problems, the present invention provides a regenerative tar burner. By setting a regenerative chamber and a heat transfer chamber, this burner can effectively absorb heat and keep warm, ensuring uniform heating of the pipes and avoiding direct contact between the pipes and the flame; and the height of the flame can be flexibly adjusted.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0008] A regenerative tar burner, comprising a combustion head, a heat storage cylinder and a heat transfer cylinder. There is a gap between the heat storage cylinder and the heat transfer cylinder, and the bottoms of the heat storage cylinder and the heat transfer cylinder are fixedly connected by a sealing plate. Both the heat storage cylinder and the heat transfer cylinder are of hollow structure. The heat storage cylinder has a heat storage cavity, and the heat transfer cylinder has a heat transfer cavity. The heat storage cylinder is provided with an oil filling pipe and a pressure relief pipe communicating with the heat storage cavity. The heat transfer cylinder is provided with a water filling pipe and an air outlet pipe communicating with the heat transfer cavity. A swirl vane is arranged inside the heat transfer cylinder.

[0009] The combustion head includes a gas pipe, an air inlet cylinder and an air outlet cover. The air inlet cylinder is fixedly connected with the sealing plate. The air outlet cover is communicated with the air inlet cylinder, and the air inlet cylinder is sleeved outside the air outlet cover. The gas pipe passes through the air inlet cylinder and extends into the middle of the air outlet cover, and the gas pipe is slidably connected with the air inlet cylinder.

[0010] The air outlet cover passes through the sealing plate and extends into the heat transfer cylinder. A lifting mechanism is arranged between the air outlet cover and the air inlet cylinder to change the height of the air outlet cover in the heat transfer cylinder through the lifting mechanism. The air outlet cover is of hollow structure, and the air outlet cover is provided with a first air outlet hole and a second air outlet hole communicating with its interior. A rotatable shielding cover is arranged inside the air outlet cover, and a corresponding driving mechanism is arranged inside the air outlet cover to drive the shielding cover to rotate to shield the first air outlet hole or the second air outlet hole.

[0011] Steam spray nozzles communicating with the heat transfer cavity are arranged on the upper side of the inner wall of the heat transfer cylinder. There are at least two steam spray nozzles, and each steam spray nozzle is communicated with the heat transfer cavity through a valve. A shielding ring is slidably connected to the inner wall of the heat transfer cylinder to shield the steam spray nozzles. The upper end of the swirl vane is fixedly connected with the shielding ring, and the lower end of the swirl vane is fixedly connected with the air outlet cover.

[0012] The swirl vane includes a spiral vane and connecting columns. There are at least two connecting columns, and the connecting columns are fixedly connected with the spiral vane.

[0013] A partition plate is arranged in the upper part of the heat transfer cavity to divide the heat transfer cavity into upper and lower parts. The upper part is a steam cavity, and the lower part is a water cavity. The steam spray nozzles are communicated with the steam cavity through valves. A number of conical holes are arranged on the partition plate.

[0014] The driving mechanism includes a driving gear ring and a driving motor. The driving gear ring is fixedly connected with the shielding cover, the driving motor is fixedly connected with the air outlet cover, and a driving gear meshing with the driving gear ring is fixedly connected to the output shaft of the driving motor.

[0015] The lifting mechanism adopts electric telescopic cylinders, and there are at least two electric telescopic cylinders.

[0016] Both the first air outlet hole and the second air outlet hole are annularly distributed. The second air outlet hole is located above the first air outlet hole, and the second air outlet hole and the first air outlet hole are staggered with each other.

[0017] The shielding cover includes a connecting ring and a shielding plate. The connecting ring is rotatably connected to the air outlet cover, and the shielding plate is fixedly connected to the connecting ring.

[0018] The upper part of the air outlet cover is in a horn shape, and the first air outlet hole and the second air outlet hole are arranged in the upper part of the air outlet cover.

[0019] The heat storage cavity is filled with heat-conducting oil, and the heat transfer cavity is filled with water.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] There is a gap between the heat storage cylinder and the heat transfer cylinder. The pipeline of the tubular furnace is located between the heat storage cylinder and the heat transfer cylinder. The water in the heat transfer cylinder absorbs and transfers heat, and the heat-conducting oil in the heat storage cylinder absorbs and stores heat (for heat preservation), so that the pipeline located between the heat storage cylinder and the heat transfer cylinder can absorb heat more evenly, and the flame generated by the burner head will not directly heat the pipeline during this process, thus playing a role in protecting the pipeline. Moreover, the water vapor generated by heat absorption in the heat transfer cavity can be discharged to the required place for use according to needs.

[0022] The structural settings of the air outlet cover and the intake cylinder can flexibly adjust the position of the air outlet cover according to needs, and at the same time cooperate with different air outlet holes (the first air outlet hole or the second air outlet hole) to change the height of the flame.

[0023] A swirl vane is provided to make the hot air flow in a spiral motion, increasing the contact with the heat transfer cavity, better absorbing heat, and heating the pipeline.

[0024] By providing a partition plate, the generated steam can be blocked to block the moisture in the steam, thereby reducing the water content of the discharged steam.

[0025] A shielding ring is provided, which can shield the steam nozzle during normal use; and when a fire accident occurs, the shielding ring can be driven to move upward correspondingly by the upward movement of the air outlet cover, exposing the steam nozzle, and spraying steam through the steam nozzle to extinguish the fire. Description of the Drawings

[0026] Figure 1 is the overall structural schematic diagram of the present invention;

[0027] Figure 2 is the axonometric drawing of the half-section structure of the present invention;

[0028] Figure 3 is Figure 2 the partial enlarged view at A in

[0029] Figure 4 is Figure 2 The partial enlarged view at position B in

[0030] Figure 5 is the front view of the half-section structure of the present invention;

[0031] Figure 6 is Figure 5 The partial enlarged view at position C in

[0032] Figure 7 is Figure 5 The partial enlarged view at position D in

[0033] Figure 8 is the structural schematic diagram of the swirl vane of the present invention;

[0034] Figure 9 is the sectional view of the burner head of the present invention;

[0035] Figure 10 is the structural schematic diagram of the shielding cover of the present invention;

[0036] Figure 11 is the schematic diagram of the using state of the present invention;

[0037] Figure 12 is Figure 11 The sectional view of the structure shown;

[0038] Wherein: 1 is the burner head, 2 is the regenerative cylinder, 3 is the heat transfer cylinder, 4 is the interval, 5 is the sealing plate, 6 is the regenerative cavity, 7 is the heat transfer cavity, 8 is the fuel filling pipe, 9 is the pressure relief pipe, 10 is the water filling pipe, 11 is the gas outlet pipe, 12 is the swirl vane, 13 is the gas supply pipe, 14 is the intake cylinder, 15 is the gas outlet hood, 16 is the lifting mechanism, 17 is the first gas outlet hole, 18 is the second gas outlet hole, 19 is the shielding cover, 20 is the driving mechanism, 21 is the steam nozzle, 22 is the shielding ring, 23 is the spiral fin, 24 is the connecting column, 25 is the partition plate, 26 is the steam cavity, 27 is the water cavity, 28 is the tapered hole, 29 is the driving gear ring, 30 is the driving motor, 31 is the driving gear, 32 is the connecting ring, 33 is the shielding plate, 34 is the furnace body, 35 is the pipeline. Specific embodiments

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0040] Such as Figures 1-10As shown in the figure, a heat storage type tar burner includes a combustion head 1, a heat storage cylinder 2 and a heat transfer cylinder 3. There is a gap 4 between the heat storage cylinder 2 and the heat transfer cylinder 3. The bottoms of the heat storage cylinder 2 and the heat transfer cylinder 3 are fixedly connected by a sealing plate 5. Both the heat storage cylinder 2 and the heat transfer cylinder 3 are of hollow structure. The heat storage cylinder 2 has a heat storage cavity 6, and the heat transfer cylinder 3 has a heat transfer cavity 7. An oil filling pipe 8 and a pressure relief pipe 9 communicating with the heat storage cavity 6 are provided on the heat storage cylinder 2. A water filling pipe 10 and an air outlet pipe 11 communicating with the heat transfer cavity 7 are provided on the heat transfer cylinder 3. Specifically, the heat storage cavity 6 is filled with heat-conducting oil, and the heat transfer cavity 7 is filled with water. Oil is filled into the heat storage cavity 6 through the oil filling pipe 8. When the pressure in the heat storage cavity 6 is too high, it can be relieved through the pressure relief pipe 9 (a corresponding pressure relief oil tank can be set). Water is filled into the heat transfer cavity 7 through the water filling pipe 10. The steam generated in the heat transfer cavity 7 can be discharged to the required position (other equipment requiring steam) through the air outlet pipe 11.

[0041] A swirl vane 12 is provided in the heat transfer cylinder 3. The hot air flow generated by combustion can spiral upward around the swirl vane 12, thereby increasing the contact with the heat transfer cylinder 3 and enabling the heat transfer cylinder 3 to absorb more heat.

[0042] The combustion head 1 includes a gas pipe 13, an intake cylinder 14 and an air outlet cover 15. The intake cylinder 14 is fixedly connected to the sealing plate 5. The air outlet cover 15 communicates with the intake cylinder 14, and the intake cylinder 14 is sleeved outside the air outlet cover 15. The gas pipe 13 passes through the intake cylinder 14 and extends into the middle of the air outlet cover 15. The gas pipe 13 is slidably connected to the intake cylinder 14. The gas pipe 13 is connected to gas. The gas is mixed with the combustion-supporting air flowing out of the air outlet cover 15 through the upper end of the gas pipe 13, and is ignited by an ignition device, and flames of different heights can be formed.

[0043] Specifically, the air outlet cover 15 passes through the sealing plate 5 and extends into the heat transfer cylinder 3. A lifting mechanism 16 is provided between the air outlet cover 15 and the intake cylinder 14. By adjusting the height of the air outlet cover 15 in the heat transfer cylinder 3 through the lifting mechanism 16, the gas and the combustion-supporting air are mixed at different positions.

[0044] The air outlet cover 15 is of hollow structure. First air outlet holes 17 and second air outlet holes 18 communicating with its interior are provided on the air outlet cover 15. The combustion-supporting air can be discharged through the first air outlet holes 17 or the second air outlet holes 18 to be mixed with the gas.

[0045] A rotatable shielding cover 19 is provided inside the air outlet cover 15. A corresponding driving mechanism 20 is provided inside the air outlet cover 15. The driving mechanism 20 drives the shielding cover 19 to rotate to block the first air outlet holes 17 or the second air outlet holes 18. That is, the air outlet position of the air outlet cover 15 can be adjusted as needed and discharged from the first air outlet holes 17 or the second air outlet holes 18.

[0046] During specific use, such as Figures 11-12As shown in the figure, the burner is installed in the furnace body 34, and the pipeline 35 is located at the interval 4 between the regenerator cylinder 2 and the heat transfer cylinder 3. That is, the inner side of the pipeline 35 absorbs the heat of the heat transfer cylinder 3, and the outer side of the pipeline 35 absorbs the heat of the regenerator cylinder 2. Moreover, the heat transfer cavity 7 of the heat transfer cylinder 3 is filled with water, and the heat storage cavity 6 of the regenerator cylinder 2 is filled with heat-conducting oil. The water can well absorb the heat of the flame and transfer it, while the heat-conducting oil has good heat preservation ability, which can reduce or avoid heat loss and has a heat storage function. Therefore, through the setting of the above interval 4, a sandwich structure with heating and heat storage can be formed. On the one hand, it can ensure that the pipeline 35 is evenly heated, and on the other hand, it can also reduce or avoid heat loss. And through the above structural setting, the flame will not directly contact the pipeline 35, thereby improving the service life of the pipeline 35. The flue gas generated by combustion can be discharged through the flue on the furnace body.

[0047] Furthermore, on the upper side of the inner wall of the heat transfer cylinder 3, there is a steam nozzle 21 communicated with the heat transfer cavity 7. There are at least two steam nozzles 21, and each steam nozzle 21 is communicated with the heat transfer cavity 7 through a valve. A shielding ring 22 is slidably connected to the inner wall of the heat transfer cylinder 3. The steam nozzles 21 are shielded by the shielding ring 22 to protect the steam nozzles 21 during normal use and avoid their erosion by the flue gas.

[0048] Specifically: the upper end of the swirl vane 12 is fixedly connected to the shielding ring 22, and the lower end of the swirl vane 12 is fixedly connected to the air outlet hood 15. When a fire accident occurs during use, the air outlet hood 15 can drive the swirl vane 12 and the shielding ring 22 to move upward, so that the shielding ring 22 no longer shields the steam nozzles 21 and the steam nozzles 21 are exposed; and the corresponding valves are opened, and the steam generated in the heat transfer cavity 7 is ejected through the steam nozzles 21 for fire extinguishing.

[0049] Furthermore, the swirl vane 12 includes a spiral vane 23 and connecting columns 24. There are at least two connecting columns 24, and the connecting columns 24 are fixedly connected to the spiral vane 23. Through the structural setting of the connecting columns 24, the overall strength of the spiral vane 23 can be effectively improved.

[0050] Furthermore, a partition plate 25 is provided in the upper part of the heat transfer cavity 7. The heat transfer cavity 7 is divided into upper and lower parts by the partition plate 25. The upper part is the steam cavity 26, and the lower part is the water cavity 27; the steam nozzles 21 are communicated with the steam cavity 26 through valves; there are several conical holes 28 on the partition plate 25. The heat transfer cavity 7 absorbs the heat generated by the flame and the flue gas, so that the water in the heat transfer cavity 7 is heated and the heat is transferred to the pipeline; when the steam pressure generated in the heat transfer cavity 7 is too high, it converges in the steam cavity 26 and is discharged through the air outlet pipe 11. The conical holes 28 are provided to prevent the steam generated in the water cavity 27 from entering the steam cavity 26, that is, to block the moisture in the steam from entering the steam cavity 26 and reduce the water content of the discharged steam.

[0051] Furthermore, both the first air outlet hole 17 and the second air outlet hole 18 are annularly distributed. The second air outlet hole 18 is located above the first air outlet hole 17, and the second air outlet hole 18 and the first air outlet hole 17 are staggered with each other.

[0052] The driving mechanism 20 includes a driving gear ring 29 and a driving motor 30. The driving gear ring 29 is fixedly connected to the shielding cover 19, the driving motor 30 is fixedly connected to the air outlet cover 15, and a driving gear 31 meshing with the driving gear ring of the driving cylinder is fixedly connected to the output shaft of the driving motor 30.

[0053] The driving motor 30 drives the driving gear 31 to rotate. The driving gear 31 meshes with the driving gear ring 29 and drives the corresponding shielding cover 19 to rotate. The shielding cover 19 shields the first air outlet hole 17 or the second air outlet hole 18, thereby changing the air outlet position of the combustion-supporting gas.

[0054] Furthermore, the lifting mechanism 16 adopts an electric telescopic cylinder, and at least two electric telescopic cylinders are provided; both ends of the electric telescopic cylinder are fixedly connected to the air inlet cylinder 14 and the air outlet cover 15 respectively. The height of the air outlet cover 15 is changed by the telescopic movement of the electric telescopic cylinder.

[0055] Furthermore, the above-mentioned shielding cover 19 specifically includes a connecting ring 32 and a shielding plate 33. The connecting ring 32 is rotatably connected to the air outlet cover 15, and the shielding plate 33 is fixedly connected to the connecting ring 32. The number of the shielding plates 33 is determined according to the distribution number of the first air outlet hole 17 and the second air outlet hole 18. When the combustion-supporting air needs to be discharged through the first air outlet hole 17, the shielding cover 19 rotates and the second air outlet hole 18 is shielded by the shielding plate 33 thereon; when the combustion-supporting air needs to be discharged through the second air outlet hole 18, the shielding cover 19 rotates and the first air outlet hole 17 is shielded by the shielding plate 33 thereon.

[0056] Furthermore, the upper part of the air outlet cover 15 is preferably in a horn shape, and the first air outlet hole 17 and the second air outlet hole 18 are arranged on the upper part of the air outlet cover 15.

[0057] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments.

Claims

1. A regenerative tar burner, characterized in that: The invention comprises a combustion head (1), a heat storage cylinder (2) and a heat transfer cylinder (3), wherein a gap (4) is provided between the heat storage cylinder (2) and the heat transfer cylinder (3), and the bottoms of the heat storage cylinder (2) and the heat transfer cylinder (3) are fixedly connected via a sealing plate (5); the heat storage cylinder (2) and the heat transfer cylinder (3) are both hollow structures, the heat storage cylinder (2) has a heat storage chamber (6), and the heat transfer cylinder (3) has a heat transfer chamber (7); the heat storage cylinder (2) is provided with a refueling pipe (8) and a pressure relief pipe (9) which are in communication with the heat storage chamber (6); the heat transfer cylinder (3) is provided with a water refueling pipe (10) and an air outlet pipe (11) which are in communication with the heat transfer chamber (7); and a swirl sheet (12) is provided inside the heat transfer cylinder (3); The burner head (1) comprises a gas pipe (13), an air inlet cylinder (14) and an air outlet hood (15); the air inlet cylinder (14) is fixedly connected to the sealing plate (5); the air outlet hood (15) is communicated with the air inlet cylinder (14), and the air inlet cylinder (14) is sleeved outside the air outlet hood (15); the gas pipe (13) passes through the air inlet cylinder (14) and extends into the middle of the air outlet hood (15); the gas pipe (13) and the air inlet cylinder (14) are slidably connected; The gas outlet hood (15) passes through the sealing plate (5) and extends into the heat transfer cylinder (3); a lifting mechanism (16) is provided between the gas outlet hood (15) and the gas inlet cylinder (14); the height of the gas outlet hood (15) in the heat transfer cylinder (3) is changed by the lifting mechanism (16); the gas outlet hood (15) is a hollow structure; the gas outlet hood (15) is provided with a first gas outlet hole (17) and a second gas outlet hole (18) which are communicated with the inside of the gas outlet hood (15); a rotatable shielding hood (19) is provided inside the gas outlet hood (15); a corresponding driving mechanism (20) is provided inside the gas outlet hood (15); the shielding hood (19) is driven by the driving mechanism (20) to rotate to shield the first gas outlet hole (17) or the second gas outlet hole (18); A steam nozzle (21) connected to the heat transfer cavity (7) is provided on the upper side of the inner wall of the heat transfer cylinder (3); at least two steam nozzles (21) are provided, and each steam nozzle (21) is connected to the heat transfer cavity (7) via a valve; a shielding ring (22) is slidably connected to the inner wall of the heat transfer cylinder (3); the shielding ring (22) shields the steam nozzle (21), and in a normal use state, the steam nozzle (21) is protected to prevent it from being corroded by smoke; The upper end of the swirl sheet (12) is fixedly connected to the shielding ring (22), and the lower end of the swirl sheet (12) is fixedly connected to the air outlet hood (15); when a fire accident occurs during use, the air outlet hood (15) moves upward to drive the swirl sheet (12) and the shielding ring (22) to move upward, so that the shielding ring (22) no longer shields the steam nozzle (21), so that the steam nozzle (21) is exposed; and the corresponding valve is opened, and the steam generated in the heat transfer cavity (7) is sprayed out through the steam nozzle (21) to extinguish the fire.

2. A regenerative tar burner according to claim 1, characterized in that: The swirl plate (12) comprises a spiral plate (23) and a connecting column (24), wherein at least two connecting columns (24) are provided, and the connecting column (24) is fixedly connected to the spiral plate (23).

3. A regenerative tar burner according to claim 1, characterized in that: A partition plate (25) is provided at the upper part of the heat transfer chamber (7), and the partition plate (25) divides the heat transfer chamber (7) into an upper and lower part, the upper part being a steam chamber (26) and the lower part being a water chamber (27); the steam nozzle (21) is connected to the steam chamber (26) via a valve; and a plurality of tapered holes (28) are provided on the partition plate (25).

4. A regenerative tar burner according to claim 1, characterized in that: The drive mechanism (20) comprises a drive gear ring (29) and a drive motor (30); the drive gear ring (29) is fixedly connected to the shielding cover (19); the drive motor (30) is fixedly connected to the air outlet cover (15); and a drive gear (31) meshing with the drive cylinder gear ring is fixedly connected to the output shaft of the drive motor (30).

5. A regenerative tar burner according to claim 1, characterized in that: The lifting mechanism (16) adopts an electric telescopic cylinder, and at least two electric telescopic cylinders are provided.

6. A regenerative tar burner according to claim 1, characterized in that: The first air outlet holes (17) and the second air outlet holes (18) are both distributed in an annular shape, the second air outlet holes (18) are located above the first air outlet holes (17), and the second air outlet holes (18) and the first air outlet holes (17) are arranged alternately.

7. A regenerative tar burner according to claim 1, characterized in that: The shielding cover (19) comprises a connecting ring (32) and a shielding plate (33); the connecting ring (32) is rotatably connected to the air outlet cover (15); and the shielding plate (33) is fixedly connected to the connecting ring (32).

8. The regenerative tar burner according to claim 1, characterized in that: The upper portion of the air outlet hood (15) is trumpet-shaped, and the first air outlet hole (17) and the second air outlet hole (18) are arranged on the upper portion of the air outlet hood (15).

9. A regenerative tar burner according to claim 1, characterized in that: The heat storage chamber (6) is filled with heat transfer oil, and the heat transfer chamber (7) is filled with water.

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