Heat accumulating type tar burner

Abstract

The invention belongs to the technical field of tube furnace combustors, and particularly relates to a heat storage type tar combustor which comprises a combustion head, a heat storage cylinder and a heat transfer cylinder, an interval exists between the heat storage cylinder and the heat transfer cylinder, and the bottom of the heat storage cylinder is fixedly connected with the bottom of the heat transfer cylinder through a sealing plate; the heat storage cylinder and the heat transfer cylinder are both of a hollow structure, the heat storage cylinder is provided with a heat storage cavity, and the heat transfer cylinder is provided with a heat transfer cavity; the combustion head comprises a gas pipe, a gas inlet cylinder and a gas outlet cover, and the gas inlet cylinder is fixedly connected with the sealing plate; a gap exists between the heat storage cylinder and the heat transfer cylinder, a pipeline of the tubular furnace is located between the heat storage cylinder and the heat transfer cylinder, heat is absorbed and transferred through water in the heat transfer cylinder, heat is absorbed and stored through heat conduction oil in the heat storage cylinder, and therefore the pipeline located between the heat storage cylinder and the heat transfer cylinder can evenly absorb heat. And in the process, flame generated by the combustion head cannot directly heat the pipeline, so that the effect of protecting the pipeline is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of tube furnace burners, and in particular relates to a heat storage type tar burner. Background Art

[0002] Tube furnace is an industrial heating equipment widely used in petroleum, chemical, pharmaceutical, food processing and other industries. It mainly consists of one or more long straight tubes, which are usually placed in a closed furnace. The design of the tube furnace allows it to heat materials in continuous or intermittent production processes.

[0003] However, the burners used in existing tubular furnaces are usually heated from the bottom, which results in a defect of poor heating effect of the pipes inside the furnace.

[0004] To this end, the utility model patent with patent application number 202223250982.9 discloses a tar tube furnace, which controls the flame height of the combustion chamber to keep the temperature of the heating furnace tube within a suitable range, reduce the generation of coke nuclei, and thus slow down or even eliminate the blockage problem of the heating furnace tube. However, the height adjustment range of the flame is limited and can only be achieved through a fixed three-stage air combustion channel. Moreover, the flame also directly heats the internal pipe, which also has the defect of uneven heating.

[0005] The invention patent with patent application number 202311012310.0 discloses a tubular furnace with adjustable heat distribution ratio. The upward thrust of the flame will cause the spiral blade to drive the middle column to rotate, and the ring gear will drive the rotating tube to rotate. The rotating tube can heat the internal medium more evenly, thereby improving the heating effect and reaction effect of the internal medium. The rotating rotating tube will cause the internal medium to flow in a circular direction, and the medium can contact the inner wall of the rotating tube more evenly, and the heating effect of the medium is more uniform. Although the modified tubular furnace can improve the uniformity of heating, it is mainly achieved by changing the pipeline structure. The pipeline needs to rotate, and the problems of sealing and flue gas erosion need to be considered. Long-term operation will inevitably cause the rotating part to get stuck. Summary of the invention

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

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: A heat storage type tar burner, comprising a combustion head, a heat storage cylinder and a heat transfer cylinder, wherein there is a gap between the heat storage cylinder and the heat transfer cylinder, and the bottom of the heat storage cylinder and the heat transfer cylinder are fixedly connected through a sealing plate; the heat storage cylinder and the heat transfer cylinder are both hollow structures, 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 a filling pipe and a pressure relief pipe connected to the heat storage cavity; the heat transfer cylinder is provided with a water filling pipe and an air outlet pipe connected to the heat transfer cavity; a swirl sheet is provided inside the heat transfer cylinder; The combustion head comprises a gas pipe, an air inlet cylinder and an air outlet hood, wherein the air inlet cylinder is fixedly connected to the sealing plate; the air outlet hood is connected to the air inlet cylinder, and the air inlet cylinder is sleeved outside the air outlet hood; the gas pipe passes through the air inlet cylinder and extends into the middle of the air outlet hood, and the gas pipe and the air inlet cylinder are slidably connected; The air outlet hood passes through the sealing plate and extends into the heat transfer cylinder. A lifting mechanism is provided between the air outlet hood and the air inlet cylinder, and the height of the air outlet hood in the heat transfer cylinder is changed by the lifting mechanism. The air outlet hood is a hollow structure, and is provided with a first air outlet hole and a second air outlet hole connected with the interior thereof. A rotatable shielding hood is provided inside the air outlet hood, and a corresponding driving mechanism is provided inside the air outlet hood, and the shielding hood is driven by the driving mechanism to rotate to shield the first air outlet hole or the second air outlet hole.

[0008] A steam nozzle connected to the heat transfer cavity is provided on the upper side of the inner wall of the heat transfer cylinder, and at least two steam nozzles are provided, and each steam nozzle is connected to the heat transfer cavity through a valve; a shielding ring is slidably connected to the inner wall of the heat transfer cylinder, and the steam nozzle is shielded by the shielding ring; the upper end of the swirl sheet is fixedly connected to the shielding ring, and the lower end of the swirl sheet is fixedly connected to the air outlet hood.

[0009] The swirl sheet comprises a spiral sheet and a connecting column. There are at least two connecting columns, and the connecting column is fixedly connected to the spiral sheet.

[0010] A partition plate is provided on the upper part of the heat transfer cavity, which divides the heat transfer cavity into an upper and lower part, the upper part is a steam cavity, and the lower part is a water cavity; the steam nozzle is connected to the steam cavity through a valve; and a plurality of conical holes are provided on the partition plate.

[0011] The driving mechanism comprises a driving gear ring and a driving motor. The driving gear ring is fixedly connected to the shielding cover, the driving motor is fixedly connected to the air outlet cover, and a driving gear meshing with the driving cylinder gear ring is fixedly connected to the output shaft of the driving motor.

[0012] The lifting mechanism adopts an electric telescopic cylinder, and at least two electric telescopic cylinders are provided.

[0013] The first air outlet holes and the second air outlet holes are both distributed in a ring shape, the second air outlet holes are located above the first air outlet holes, and the second air outlet holes are alternately arranged with the first air outlet holes.

[0014] The shielding cover comprises a connecting ring and a shielding plate, wherein the connecting ring is rotatably connected to the air outlet cover, and the shielding plate is fixedly connected to the connecting ring.

[0015] The upper part of the air outlet cover is trumpet-shaped, and the first air outlet hole and the second air outlet hole are arranged on the upper part of the air outlet cover.

[0016] The heat storage chamber is filled with heat transfer oil, and the heat transfer chamber is filled with water.

[0017] Compared with the prior art, the present invention has the following beneficial effects: There is a gap between the heat storage cylinder and the heat transfer cylinder. The pipe 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 transfer oil in the heat storage cylinder absorbs and stores heat (insulation), so that the pipe between the heat storage cylinder and the heat transfer cylinder can absorb heat more evenly. In this process, the flame generated by the combustion head will not directly heat the pipe, thus protecting the pipe. In addition, the water vapor generated by the heat absorption in the heat transfer cavity can be discharged to the required place for use as needed.

[0018] The structural arrangement of the air outlet hood and the air inlet cylinder can flexibly adjust the position of the air outlet hood as needed, 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.

[0019] A swirl blade is provided to make the hot air flow spirally move, increase the contact with the heat transfer cavity, better absorb heat, and heat the pipeline.

[0020] The partition plate can be provided to block the generated steam and the moisture in the steam, thereby reducing the moisture content of the discharged steam.

[0021] A shielding ring is provided to shield the steam nozzle during normal use; when a fire accident occurs, the shielding ring can be moved upward by moving the air outlet hood upward to expose the steam nozzle, and steam can be sprayed through the steam nozzle to extinguish the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is an axonometric view of a half-section structure of the present invention; Figure 3 yes Figure 2 A partial enlarged view of the middle A; Figure 4 yes Figure 2 A partial enlarged view of point B in the middle; Figure 5 It is a front view of the half-section structure of the present invention; Figure 6 yes Figure 5 A partial enlarged view of point C in the middle; Figure 7 yes Figure 5 A partial enlarged view of point D in the middle; Figure 8 It is a schematic diagram of the structure of the swirl blade of the present invention; Fig. 9 is a cross-sectional view of a burner head of the present invention; Fig.10 It is a schematic diagram of the structure of the shielding cover of the present invention; Fig.11 It is a schematic diagram of the use state of the present invention; Fig.12 yes Fig.11 a cross-sectional view of the structure shown; Wherein: 1 is a combustion head, 2 is a heat storage cylinder, 3 is a heat transfer cylinder, 4 is a spacer, 5 is a sealing plate, 6 is a heat storage chamber, 7 is a heat transfer chamber, 8 is a refueling pipe, 9 is a pressure relief pipe, 10 is a water adding pipe, 11 is an air outlet pipe, 12 is a swirl plate, 13 is a gas pipe, 14 is an air inlet cylinder, 15 is an air outlet hood, 16 is a lifting mechanism, 17 is a first air outlet, 18 is a second air outlet, 19 is a shielding cover, 20 is a driving mechanism, 21 is a steam nozzle, 22 is a shielding ring, 23 is a spiral sheet, 24 is a connecting column, 25 is a partition plate, 26 is a steam chamber, 27 is a water chamber, 28 is a tapered hole, 29 is a driving gear ring, 30 is a driving motor, 31 is a driving gear, 32 is a connecting ring, 33 is a shielding plate, 34 is a furnace body, and 35 is a pipeline. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] like Figure 1-10 As shown, a heat storage type tar burner comprises 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 bottom of the heat storage cylinder 2 and the heat transfer cylinder 3 are fixedly connected by 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 connected to the heat storage chamber 6; the heat transfer cylinder 3 is provided with a water filling pipe 10 and an air outlet pipe 11 connected to the heat transfer chamber 7. Specifically: the heat storage chamber 6 is filled with heat transfer oil, and the heat transfer chamber 7 is filled with water. Add oil to the heat storage chamber 6 through the refueling pipe 8, when the pressure in the heat storage chamber 6 is too large, the pressure can be relieved through the pressure relief pipe 9 (a corresponding pressure relief oil tank can be provided); add water to the heat transfer chamber 7 through the water filling pipe 10, and the steam generated in the heat transfer chamber 7 can be discharged to the desired position (other equipment requiring steam) through the air outlet pipe 11.

[0025] A swirl sheet 12 is provided in the heat transfer tube 3, and the hot air flow generated by combustion can spirally rise around the swirl sheet 12, thereby increasing the contact with the heat transfer tube 3, so that the heat transfer tube 3 absorbs more heat.

[0026] The combustion head 1 includes 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 connected to 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, and the gas pipe 13 and the air inlet cylinder 14 are slidably connected. The gas pipe 13 is connected with gas, and the gas is mixed with the combustion-supporting air flowing out of the air outlet hood 15 through the upper end of the gas pipe 13, ignited by the ignition device, and can form flames of different heights.

[0027] Specifically, the gas outlet hood 15 passes through the sealing plate 5 and extends into the heat transfer tube 3. A lifting mechanism 16 is provided between the gas outlet hood 15 and the gas inlet tube 14. The lifting mechanism 16 changes the height of the gas outlet hood 15 in the heat transfer tube 3, so that the gas and the combustion-supporting air are mixed at different positions.

[0028] The gas outlet hood 15 is a hollow structure, and is provided with a first gas outlet hole 17 and a second gas outlet hole 18 communicating with the interior thereof; the combustion-supporting air can be discharged through the first gas outlet hole 17 or the second gas outlet hole 18 to mix with the fuel gas.

[0029] A rotatable shielding cover 19 is provided inside the air outlet hood 15, and a corresponding driving mechanism 20 is provided inside the air outlet hood 15. The shielding cover 19 is driven by the driving mechanism 20 to rotate to shield the first air outlet 17 or the second air outlet 18; that is, the air outlet position of the air outlet hood 15 can be adjusted as needed to discharge from the first air outlet 17 or the second air outlet 18.

[0030] When used specifically, Figure 11-12 As shown, the burner is installed in the furnace body 34, and the pipe 35 is located at the interval 4 between the heat storage cylinder 2 and the heat transfer cylinder 3; that is, the inner side of the pipe 35 absorbs the heat of the heat transfer cylinder 3, and the outer side of the pipe 35 absorbs the heat of the heat storage 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 heat storage cylinder 2 is filled with heat transfer oil. The water can absorb the heat of the flame and transfer it well, and the heat transfer oil has good heat preservation ability, which can reduce or avoid the loss of heat and has a heat storage effect. Therefore, through the setting of the above-mentioned interval 4, a sandwich structure with heating and heat storage can be formed, which can ensure that the pipe 35 is heated evenly on the one hand, and reduce or avoid the loss of heat on the other hand. In addition, through the above-mentioned structural setting, the flame will not directly contact the pipe 35, thereby increasing the service life of the pipe 35. The smoke generated by combustion can be discharged through the flue on the furnace body.

[0031] Furthermore, 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. There are at least two steam nozzles 21, and each steam nozzle 21 is connected to 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, and the shielding ring 22 shields the steam nozzle 21, thereby protecting the steam nozzle 21 from being corroded by smoke in normal use.

[0032] Specifically, the upper end of the swirl plate 12 is fixedly connected to the shielding ring 22, and the lower end of the swirl plate 12 is fixedly connected to the air outlet hood 15. When a fire accident occurs during use, the air outlet hood 15 can be moved upward to drive the swirl plate 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.

[0033] Furthermore, the swirl plate 12 includes a spiral plate 23 and a connecting column 24. There are at least two connecting columns 24, and the connecting columns 24 are fixedly connected to the spiral plate 23. The structural setting of the connecting column 24 can effectively improve the overall strength of the spiral plate 23.

[0034] Furthermore, a partition plate 25 is provided at the upper part of the heat transfer chamber 7, and the heat transfer chamber 7 is divided into two parts, the upper part is a steam chamber 26, and the lower part is a water chamber 27 through the partition plate 25; the steam nozzle 21 is connected to the steam chamber 26 through a valve; and a plurality of tapered holes 28 are provided on the partition plate 25. The heat transfer chamber 7 absorbs the heat generated by the flame and the smoke so that the water in the heat transfer chamber 7 is heated and transfers the heat to the pipeline; when the steam pressure generated in the heat transfer chamber 7 is too high, it gathers in the steam chamber 26 and is discharged through the outlet pipe 11. The tapered holes 28 can prevent the steam generated in the water chamber 27 from entering the steam chamber 26, that is, prevent the water in the steam from entering the steam chamber 26, and reduce the water content of the discharged steam.

[0035] Furthermore, 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 alternately arranged.

[0036] The driving mechanism 20 includes a driving ring gear 29 and a driving motor 30. The driving ring gear 29 is fixedly connected to the shielding cover 19, and the driving motor 30 is fixedly connected to the air outlet cover 15. A driving gear 31 meshing with the driving cylinder ring gear is fixedly connected to the output shaft of the driving motor 30.

[0037] The driving motor 30 drives the driving gear 31 to rotate, and 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 17 or the second air outlet 18, thereby changing the outlet position of the combustion-supporting gas.

[0038] Furthermore, the lifting mechanism 16 adopts an electric telescopic cylinder, and at least two electric telescopic cylinders are provided; the two ends of the electric telescopic cylinder are respectively fixedly connected to the air inlet cylinder 14 and the air outlet hood 15. The height of the air outlet hood 15 is changed by the extension and contraction of the electric telescopic cylinder.

[0039] Furthermore, the 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 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 shields the second air outlet hole 18 through 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 shields the first air outlet hole 17 through the shielding plate 33 thereon.

[0040] Furthermore, the upper portion of the air outlet cover 15 is preferably trumpet-shaped, and the first air outlet hole 17 and the second air outlet hole 18 are disposed at the upper portion of the air outlet cover 15 .

[0041] Only the preferred embodiments of the present invention have been 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 air outlet hood (15) passes through the sealing plate (5) and extends into the heat transfer tube (3); a lifting mechanism (16) is provided between the air outlet hood (15) and the air inlet tube (14); the height of the air outlet hood (15) in the heat transfer tube (3) is changed by the lifting mechanism (16); the air outlet hood (15) is a hollow structure; the air outlet hood (15) is provided with a first air outlet hole (17) and a second air outlet hole (18) which are communicated with the interior of the air outlet hood (15); a rotatable shielding hood (19) is provided inside the air outlet hood (15); a corresponding driving mechanism (20) is provided inside the air outlet hood (15); the shielding hood (19) is driven by the driving mechanism (20) to rotate to shield the first air outlet hole (17) or the second air outlet hole (18).

2. A regenerative tar burner according to claim 1, characterized in that: 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), and the steam nozzle (21) is shielded by the shielding ring (22); 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 cover (15).

3. A regenerative tar burner according to claim 1 or 2, 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).

4. A regenerative tar burner according to claim 2, 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).

5. 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).

6. 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.

7. 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.

8. The 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).

9. A 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).

10. The 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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