Coal chemical industry flue gas waste heat recovery treatment device

Abstract

The invention relates to the technical field of waste heat recovery, which comprises a base plate, a heat preservation cover is arranged at the top end of the base plate, a water storage barrel is arranged at the top end of the base plate and located in the heat preservation cover, a flue gas flow guide pipe is wound on the outer wall of the water storage barrel, and the bottom end of the flue gas flow guide pipe extends out of the heat preservation cover to be connected with a flue gas circulation adjusting box. The device has the beneficial effects that the flow of high-temperature flue gas flowing into the flue gas flow guide pipe can be adjusted by arranging the flue gas flow adjusting assembly, and the situation that the water temperature in the water storage barrel is heated too high to affect use is avoided; meanwhile, the flue gas flow adjusting assembly can automatically adjust the high-temperature flue gas flow according to the water temperature through cooperation of an annular worm gear, a worm, a sliding adjusting piece, a gear, a temperature sensor and a servo motor, and use is flexible, convenient and fast; dust and impurities in the flue gas are prevented from entering the flue gas guide pipe and adhering to the inner wall of the flue gas guide pipe, so that the heat exchange efficiency of the flue gas guide pipe is not influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste heat recovery, in particular to a coal chemical industry flue gas waste heat recovery treatment device. BACKGROUND

[0002] Coal chemical industry refers to the process of converting coal into gaseous, liquid and solid fuels and chemicals through chemical processing. It mainly includes coal gasification, liquefaction, dry distillation, tar processing and calcium carbide acetylene chemical industry. The coal chemical processing process. The flue gas generated in the coal chemical processing process carries a large amount of heat and is discharged, which increases energy loss and reduces energy utilization.

[0003] The existing coal chemical industry flue gas waste heat recovery treatment device mainly wraps the smoke guide pipe around the water bucket to heat the water to achieve the effect of waste heat utilization. The existing smoke guide pipe cannot adjust the flow of high-temperature flue gas during use, so it is difficult to control the heating temperature. At the same time, the dust in the flue gas is easy to adhere to the inner wall of the smoke guide pipe during use, thereby affecting the heat exchange efficiency.

[0004] In view of the problems in the related art, no effective solution has been proposed so far. SUMMARY

[0005] In view of the problems in the related art, the present application proposes a coal chemical industry flue gas waste heat recovery treatment device to overcome the above technical problems existing in the prior art.

[0006] To this end, the specific technical solutions adopted by the present application are as follows: A coal chemical industry flue gas waste heat recovery treatment device, comprising a base plate, a heat preservation cover is arranged at the top end of the base plate, a water storage bucket is arranged at the top end of the base plate and in the heat preservation cover, a flue gas guide pipe is wound around the outer wall of the water storage bucket, the bottom end of the flue gas guide pipe extends to the outside of the heat preservation cover and is connected with a flue gas flow regulation box, a flue gas flow regulation assembly is arranged in the flue gas flow regulation box, a filter box is arranged on one side of the flue gas flow regulation box, a filter assembly is arranged in the filter box, a flue gas guide inlet joint is arranged on one side of the filter box, the top end of the flue gas guide pipe extends to the outside of the heat preservation cover, a water discharge pipe extending to the outside of the heat preservation cover is arranged on the outer wall of the water storage bucket, a water filling pipe extending to the outside of the heat preservation cover is arranged at the top end of the water storage bucket, a water filling pump is arranged at the top end of the heat preservation cover and above the water filling pipe, a liquid level sensor matched with the water filling pump is arranged in the water storage bucket, a pressure relief pipe extending to the outside of the heat preservation cover is arranged at the top end of the water storage bucket, and a pressure relief assembly is arranged in the pressure relief pipe. A plurality of support columns are evenly distributed at the bottom end of the base plate.

[0007] Preferably, a heat preservation layer is arranged on the inner wall of the heat preservation cover, and a valve is arranged on the outer wall of the heat preservation cover and above the water discharge pipe.

[0008] Preferably, the flue gas flow regulating assembly comprises a ring-shaped worm gear arranged in the flue gas flow regulating box, a plurality of positioning columns evenly distributed and penetrating through the ring-shaped worm gear, a stroke hole one arranged in the ring-shaped worm gear, a worm arranged in the flue gas flow regulating box, a plurality of sliding regulating pieces arranged in a circumferential array in the ring-shaped worm gear, a rectangular positioning frame penetrating through the sliding regulating pieces, a stroke hole two arranged in the sliding regulating pieces, and the sliding regulating pieces connected with the ring-shaped worm gear through a linkage.

[0009] Preferably, the worm is connected with the flue gas flow regulating box through a bearing, and one end of the worm extends out of the flue gas flow regulating box and is connected with a driving end of a servo motor, and the water storage bucket is provided with a temperature sensor matched with the servo motor.

[0010] Preferably, the linkage comprises a plurality of gears arranged in a circumferential array in the ring-shaped worm gear, the gears are connected with the flue gas flow regulating box through a connecting shaft, the inner wall of the ring-shaped worm gear is provided with meshing teeth one engaged with the gears, and the sliding regulating pieces are provided with meshing teeth two engaged with the gears on one side.

[0011] Preferably, the filtering assembly comprises symmetrically arranged mounting grooves arranged at the top end of the filtering box, and two groups of the mounting grooves are provided with mounting plates, the mounting plates are connected with the filtering box through limiting pieces, and the bottom end of the mounting plates is provided with a dust filter screen extending into the filtering box.

[0012] Preferably, the top end of the mounting plate is provided with a handle.

[0013] Preferably, the limiting piece comprises a sliding groove arranged on both sides of the mounting plate, a sliding block matched with the sliding groove arranged in the sliding groove, the sliding block is connected with the mounting plate through a spring one on one side, the side of the sliding block away from the spring one is provided with a limiting rod extending out of the sliding groove, and the filtering box is provided with a limiting groove matched with the limiting rod.

[0014] Preferably, the limiting rod on the side out of the sliding groove is in a spherical structure.

[0015] Preferably, the pressure relief assembly comprises a piston matched with the pressure relief pipe arranged in the pressure relief pipe, the piston is connected with the pressure relief pipe through a spring two, and a plurality of evenly distributed pressure relief holes are arranged on the top end of the piston and on the outer wall of the pressure relief pipe.

[0016] The beneficial effects of this invention are as follows: By setting a flue gas flow regulating component, the flow rate of high-temperature flue gas flowing into the flue gas guide pipe can be adjusted, avoiding excessive heating of the water temperature inside the storage tank and affecting its use. At the same time, the flue gas flow regulating component, through the cooperation of annular worm gear, worm, sliding adjusting plate, gear, temperature sensor and servo motor, can automatically adjust the flow rate of high-temperature flue gas according to the water temperature, making it flexible and convenient to use. By setting a filter component, the high-temperature flue gas can be filtered to prevent dust and impurities in the flue gas from entering the flue gas guide pipe and adhering to its inner wall, thereby affecting the heat exchange efficiency of the flue gas guide pipe. At the same time, the filter component, through the cooperation of slider, spring and limit rod, facilitates the disassembly, replacement and cleaning of the dust filter screen. By setting a pressure relief component, the water storage tank can be depressurized to avoid excessive pressure inside the water storage tank, further improving its safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a waste heat recovery treatment device for coal chemical flue gas according to an embodiment of the present invention. Figure 2 This is a front view of a waste heat recovery treatment device for coal chemical flue gas according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of a waste heat recovery treatment device for coal chemical flue gas according to an embodiment of the present invention. Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle; Figure 5 This is a schematic diagram of the assembly structure of the flue gas flow regulating box and filter box in a coal chemical flue gas waste heat recovery treatment device according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the flue gas flow regulating box in a coal chemical flue gas waste heat recovery treatment device according to an embodiment of the present invention. Figure 7 This is a cross-sectional view of the flue gas flow regulating box in a coal chemical flue gas waste heat recovery treatment device according to an embodiment of the present invention. Figure 8 This is a cross-sectional view of a filter box in a waste heat recovery treatment device for coal chemical flue gas according to an embodiment of the present invention.

[0019] In the picture: 1. Base plate; 2. Insulation cover; 3. Water storage tank; 4. Flue gas guide pipe; 5. Flue gas flow regulating box; 6. Filter box; 7. Flue gas inlet connector; 8. Water drain pipe; 9. Water inlet pipe; 10. Water pump; 11. Pressure relief hole; 12. Pressure relief pipe; 13. Support column; 14. Insulation layer; 15. Valve; 16. Annular worm gear; 17. Positioning column; 18. Stroke hole one; 19. Worm; 20. Sliding adjusting plate; 21. Rectangular positioning frame; 22. Stroke hole two; 23. Servo motor; 24. Gear; 25. Connecting shaft; 26. Meshing gear one; 27. Meshing gear two; 28. Mounting groove; 29. ​​Mounting plate; 30. Smoke filter screen; 31. Handle; 32. Slide groove; 33. Slider; 34. Spring one; 35. Limiting rod; 36. Piston; 37. Spring two. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] According to an embodiment of the present invention, a waste heat recovery treatment device for coal chemical flue gas is provided.

[0022] Example 1 like Figures 1-8 As shown, the waste heat recovery treatment device for coal chemical flue gas according to an embodiment of the present invention includes a base plate 1. A heat insulation cover 2 is provided at the top of the base plate 1. A water storage tank 3 is provided at the top of the base plate 1 and within the heat insulation cover 2. A flue gas guide pipe 4 is wound around the outer wall of the water storage tank 3. The bottom end of the flue gas guide pipe 4 extends to the outside of the heat insulation cover 2 and connects to a flue gas flow regulating box 5. A flue gas flow regulating component is provided in the flue gas flow regulating box 5. A filter box 6 is provided on one side of the flue gas flow regulating box 5, containing a filter component. A flue gas inlet connector is provided on one side of the filter box 6. 7. The top end of the flue gas guide pipe 4 extends to the outside of the insulation cover 2. The outer wall of the water storage tank 3 is provided with a drain pipe 8 extending to the outside of the insulation cover 2. The top end of the water storage tank 3 is provided with a water inlet pipe 9 extending to the outside of the insulation cover 2. A water pump 10 is provided at the top of the insulation cover 2 and on the water inlet pipe 9. A liquid level sensor matching the water pump 10 is provided in the water storage tank 3. A pressure relief pipe 12 extending to the outside of the insulation cover 2 is provided at the top of the water storage tank 3. A pressure relief component is provided in the pressure relief pipe 12. Several evenly distributed support columns 13 are provided at the bottom end of the base plate 1. The inner wall of the insulation cover 2 is provided with an insulation layer 14. A valve 15 is provided on the outside of the insulation cover 2 and on the drain pipe 8.

[0023] Waste heat recovery is achieved by connecting the flue gas inlet connector 7 to an external high-temperature flue gas duct. The high-temperature flue gas will pass through the filter box 6 and the flue gas flow regulating box 5 through the flue gas inlet connector 7 and enter the flue gas guide pipe 4. When the high-temperature flue gas flows in the flue gas guide pipe 4, it will heat the water storage tank 3, which will heat the water inside the water storage tank 3. When personnel use the heated water, they only need to open the valve 15 to discharge the hot water through the drain pipe 8. When the water level inside the water storage tank 3 drops, the liquid level sensor detects the water level information and starts the water pump 10 to input external water into the water storage tank 3 through the water pipe 9. There is no need for manual water addition. At the same time, the heat insulation cover 2 and the heat insulation layer 14 work together to prevent heat loss and improve the waste heat recovery efficiency.

[0024] Example 2 like Figures 1-8 As shown, the flue gas flow regulating assembly includes an annular worm gear 16 disposed in the flue gas flow regulating box 5. The flue gas flow regulating box 5 is provided with a plurality of evenly distributed positioning posts 17 that penetrate the annular worm gear 16. The annular worm gear 16 is provided with a stroke hole 18 that matches the annular worm gear 16. The flue gas flow regulating box 5 is provided with a worm 19 that matches the annular worm gear 16. The annular worm gear 16 is provided with a plurality of sliding adjusting plates 20 arranged in a circular array. The flue gas flow regulating box 5 is provided with a rectangular positioning frame 21 that penetrates the sliding adjusting plate 20. The sliding adjusting plate 20 is provided with a stroke hole 22 that matches the rectangular positioning frame 21. The sliding adjusting plate 20 is connected to the annular worm gear 16 through a linkage. The worm gear 19 is connected to the flue gas flow regulating box 5 via a bearing. One end of the worm gear 19 extends outside the flue gas flow regulating box 5 and is connected to the drive end of the servo motor 23. The water storage tank 3 is equipped with a temperature sensor that matches the servo motor 23. The linkage includes a plurality of gears 24 arranged in a circumferential array in the annular worm gear 16. The gears 24 are connected to the flue gas flow regulating box 5 via a connecting shaft 25. The inner wall of the annular worm gear 16 is provided with a first meshing tooth 26 that meshes with the gear 24. The sliding adjusting plate 20 is provided with a second meshing tooth 27 that meshes with the gear 24 on one side.

[0025] When the water temperature in storage tank 3 is too high, the temperature sensor detects the water temperature information and starts the servo motor 23 to drive the worm gear 19 to rotate. The worm gear 19 drives the annular worm wheel 16 to rotate counterclockwise. The annular worm wheel 16 drives multiple sets of gears 24 to rotate clockwise through meshing teeth 26. The multiple sets of gears 24 drive multiple sets of sliding adjusting plates 20 to move synchronously through meshing teeth 27, reducing the flow opening formed between the multiple sets of sliding adjusting plates 20, thereby reducing the flow of high-temperature flue gas. When the water temperature in storage tank 3 is low, the servo motor 23 starts to drive the worm gear 19 to rotate. The worm gear 19 drives the annular worm wheel 16 to rotate clockwise. 16 drives multiple sets of gears 24 to rotate counterclockwise via meshing gear 1 26. The multiple sets of gears 24 drive multiple sets of sliding adjustment plates 20 to move synchronously via meshing gear 27, thereby expanding the flow opening formed between the multiple sets of sliding adjustment plates 20 and increasing the flow rate of high-temperature flue gas. By setting the flue gas flow rate adjustment component, the flow rate of high-temperature flue gas flowing into the flue gas guide pipe can be adjusted to avoid the water temperature inside the water storage tank from being too high and affecting its use. At the same time, the flue gas flow rate adjustment component, through the cooperation of annular worm gear, worm, sliding adjustment plate, gear, temperature sensor and servo motor, can automatically adjust the flow rate of high-temperature flue gas according to the water temperature, making it flexible and convenient to use.

[0026] Example 3 like Figures 1-8 As shown, the filter assembly includes symmetrically arranged mounting slots 28 at the top of the filter box 6. Each of the two mounting slots 28 contains a mounting plate 29, which is connected to the filter box 6 via a limiting member. The bottom of the mounting plate 29 has a dust filter screen 30 extending into the filter box 6. A handle 31 is located at the top of the mounting plate 29. The limiting member includes sliding grooves 32 on both sides of the mounting plate 29. Matching sliders 33 are provided in the sliding grooves 32. One side of the slider 33 is connected to the mounting plate 29 via a spring 34. A limiting rod 35 extending out of the sliding groove 32 is provided on the side of the slider 33 away from the spring 34. A limiting groove matching the limiting rod 35 is provided on the filter box 6. The limiting rod 35 has a spherical structure on the side outside the sliding groove 32. The pressure relief assembly includes a piston 36 that is matched to the pressure relief pipe 12. The piston 36 is connected to the pressure relief pipe 12 by a spring 37. The top of the piston 36 and the outer wall of the pressure relief pipe 12 are provided with a plurality of evenly distributed pressure relief holes 11.

[0027] Before entering the flue gas guide pipe 4 through the flue gas inlet connector 7, the high-temperature flue gas first enters the filter box 6. Upon entering the filter box 6, the high-temperature flue gas passes through two sets of dust filters 30 for dust filtration. When the dust filters 30 need cleaning, simply pull the handle 31 upwards. This forces the limit rod 35 to compress the spring 34, causing the limit rod 35 to disengage from the limit groove on the filter box 6. The dust filters 30 are then pulled out of the filter box 6 along with the mounting plate 29 for cleaning. When the air pressure in the water storage tank 3 is too high, the internal air pressure in the water storage tank 3 will push the piston 36 upwards until the piston 36 reaches the top of the pressure relief hole 11. When spring 2 37 is in a compressed state, the air pressure inside the water storage tank 3 is discharged through the pressure relief hole 11. When the air pressure inside the water storage tank 3 decreases, spring 2 37 resets and drives piston 36 to move downward to seal the water storage tank 3. By setting up a filter assembly, high-temperature flue gas can be filtered to prevent dust and impurities in the flue gas from entering the flue gas guide pipe and adhering to its inner wall, thereby affecting the heat exchange efficiency of the flue gas guide pipe. At the same time, the filter assembly, through the cooperation of slider, spring 1 and limit rod, facilitates the disassembly, replacement and cleaning of the dust filter screen by personnel. By setting up a pressure relief assembly, the water storage tank can be depressurized to avoid excessive pressure inside the water storage tank, further improving its safety.

[0028] In summary, by utilizing the above-mentioned technical solutions of the present invention, the flow rate of high-temperature flue gas flowing into the flue gas guide pipe can be adjusted by setting a flue gas flow rate adjustment component, avoiding excessive heating of the water temperature inside the water storage tank and affecting its use. Simultaneously, the flue gas flow rate adjustment component, through the cooperation of annular worm gear, worm, sliding adjustment plate, gear, temperature sensor, and servo motor, can automatically adjust the high-temperature flue gas flow rate according to the water temperature, making it flexible and convenient to use. The filter component can filter the high-temperature flue gas, preventing dust and impurities in the flue gas from entering the flue gas guide pipe and adhering to its inner wall, thereby affecting the heat exchange efficiency of the flue gas guide pipe. Furthermore, the filter component, through the cooperation of a slider, spring, and limit rod, facilitates the disassembly, replacement, and cleaning of the dust filter screen. The pressure relief component can depressurize the water storage tank, preventing excessive internal pressure and further improving its safety.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste heat recovery and treatment device for coal chemical flue gas, characterized in that, The system includes a substrate (1), a heat insulation cover (2) at the top of the substrate (1), a water storage tank (3) at the top of the substrate (1) and inside the heat insulation cover (2), a flue gas guide pipe (4) wrapped around the outer wall of the water storage tank (3), the bottom end of the flue gas guide pipe (4) extending to the outside of the heat insulation cover (2) and connected to a flue gas flow regulating box (5), a flue gas flow regulating component in the flue gas flow regulating box (5), a filter box (6) on one side of the flue gas flow regulating box (5), a filter component in the filter box (6), a flue gas inlet connector (7) on one side of the filter box (6), and the top end of the flue gas guide pipe (4) extending to the outside of the heat insulation cover (2) and connected to a flue gas flow regulating box (5). Extending out of the insulation cover (2), the outer wall of the water storage tank (3) is provided with a drain pipe (8) extending out of the insulation cover (2), the top of the water storage tank (3) is provided with a water filling pipe (9) extending out of the insulation cover (2), the top of the insulation cover (2) and located on the water filling pipe (9) is provided with a water pump (10), the water storage tank (3) is provided with a liquid level sensor that matches the water pump (10), the top of the water storage tank (3) is provided with a pressure relief pipe (12) extending out of the insulation cover (2), the pressure relief pipe (12) is provided with a pressure relief component, and the bottom of the base plate (1) is provided with several evenly distributed support columns (13).

2. The waste heat recovery treatment device for coal chemical flue gas according to claim 1, characterized in that, The inner wall of the heat insulation cover (2) is provided with a heat insulation layer (14), and a valve (15) is provided on the outside of the heat insulation cover (2) and on the drain pipe (8).

3. The waste heat recovery treatment device for coal chemical flue gas according to claim 2, characterized in that, The flue gas flow regulating component includes an annular worm gear (16) in the flue gas flow regulating box (5), a plurality of evenly distributed positioning posts (17) in the flue gas flow regulating box (5) that penetrate the annular worm gear (16), a stroke hole (18) matching the annular worm gear (16) on the annular worm gear (16), a worm (19) matching the annular worm gear (16) in the flue gas flow regulating box (5), a plurality of sliding adjusting plates (20) arranged in a circular array in the annular worm gear (16), a rectangular positioning frame (21) penetrating the sliding adjusting plate (20) in the flue gas flow regulating box (5), a stroke hole (22) matching the rectangular positioning frame (21) on the sliding adjusting plate (20), and the sliding adjusting plate (20) is connected to the annular worm gear (16) through a linkage.

4. The waste heat recovery treatment device for coal chemical flue gas according to claim 3, characterized in that, The worm gear (19) is connected to the flue gas flow regulating box (5) through a bearing. One end of the worm gear (19) extends to the outside of the flue gas flow regulating box (5) and is connected to the drive end of the servo motor (23). The water storage tank (3) is equipped with a temperature sensor that matches the servo motor (23).

5. The waste heat recovery treatment device for coal chemical flue gas according to claim 4, characterized in that, The linkage includes a plurality of gears (24) arranged in a circular array in the annular worm gear (16). The gears (24) are connected to the flue gas flow regulating box (5) through a connecting shaft (25). The inner wall of the annular worm gear (16) is provided with a first meshing tooth (26) that meshes with the gear (24). The sliding adjusting plate (20) is provided with a second meshing tooth (27) that meshes with the gear (24) on one side.

6. The waste heat recovery treatment device for coal chemical flue gas according to claim 5, characterized in that, The filter assembly includes symmetrically arranged mounting slots (28) at the top of the filter box (6). Each of the two sets of mounting slots (28) is provided with a mounting plate (29). The mounting plate (29) is connected to the filter box (6) by a limiting member. The bottom end of the mounting plate (29) is provided with a dust filter screen (30) extending into the filter box (6).

7. The waste heat recovery treatment device for coal chemical flue gas according to claim 6, characterized in that, The mounting plate (29) is provided with a handle (31) at the top.

8. The waste heat recovery treatment device for coal chemical flue gas according to claim 7, characterized in that, The limiting component includes a sliding groove (32) on both sides of the mounting plate (29), a matching slider (33) in the sliding groove (32), one side of the slider (33) being connected to the mounting plate (29) by a spring (34), and a limiting rod (35) extending out of the sliding groove (32) on the side of the slider (33) away from the spring (34), and a limiting groove matching the limiting rod (35) on the filter box (6).

9. A waste heat recovery treatment device for coal chemical flue gas according to claim 8, characterized in that, The limiting rod (35) is a spherical structure located on one side outside the slide groove (32).

10. A waste heat recovery treatment device for coal chemical flue gas according to claim 9, characterized in that, The pressure relief assembly includes a piston (36) provided in the pressure relief pipe (12) and matched therewith. The piston (36) is connected to the pressure relief pipe (12) by a spring (37). The top of the piston (36) and the outer wall of the pressure relief pipe (12) are provided with a plurality of evenly distributed pressure relief holes (11).

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