Denitration equipment for recycling tail gas waste heat

Abstract

The utility model relates to the technical field of industrial waste heat recovery and denitration intersection technology, and disclose a kind of denitration equipment for regenerative tail gas waste heat recycling, comprising: base, for as the installation carrier of denitration equipment and tank body;Tank body, for as the installation carrier of waste heat utilization component, scale removal component, heat preservation component, protection component and sealing component. Waste heat utilization component is used to carry out waste heat utilization operation to regenerative tail gas. By setting waste heat utilization component, it is convenient to recycle and utilize the waste heat of regenerative tail gas, solves the problem that traditional equipment cannot recycle and utilize the waste heat of regenerative tail gas, so that additional consumption of natural gas or electric energy is needed to reheat process medium, the material cost increases, improves the utilization of energy, further improves the applicability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste heat recovery and denitrification technology, and more specifically to a denitrification device for recycling waste heat from regenerated exhaust gas. Background Technology

[0002] The core function of denitrification equipment is to convert nitrogen oxides in flue gas into harmless nitrogen and water through selective catalytic reduction reaction. Its core component is the catalyst layer. After long-term operation, the catalyst may become less efficient due to sulfur poisoning, ash accumulation, or chemical deactivation. It needs to be regenerated to restore its activity. The regeneration process itself does not directly produce exhaust gas, but it may release substances that have been adsorbed or generated during the regeneration process, forming regeneration exhaust gas.

[0003] The shortcomings of existing technology: In existing equipment, the regenerated exhaust gas is directly discharged into the air through the purification equipment. However, the regenerated exhaust gas itself generates heat energy, and the waste heat of the regenerated exhaust gas cannot be recovered and utilized. This leads to the need to consume additional natural gas or electricity to reheat the process medium (such as boiler feedwater or air preheating), resulting in increased operating costs, reduced energy utilization, and further reduced equipment applicability, which is not conducive to practical application and operation. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a denitrification device for recycling waste heat from regenerated exhaust gas, so as to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a denitrification device for recycling waste heat from regenerated exhaust gas, comprising: The base serves as a mounting carrier for denitrification equipment and tanks; The tank serves as a mounting carrier for waste heat recovery components, scale removal components, insulation components, protection components, and sealing components. Waste heat recovery components are used to recover waste heat from regenerated exhaust gas. The waste heat utilization component includes: The end slots are all located at the top of the inner wall of the tank. The heat exchange tube has two ends that slide into the interior of two end slots, respectively. The first chute is opened on the top of the tank, and the two first chutes are located on both sides of the two end slots; The sliding plates are all slidably fitted inside the first groove; The first clamp is installed on the inside of the skateboard; The first fixing plate is installed on the side of the end groove away from the first sliding groove; The second clamping block is installed on the inner side of the first fixing plate, and the second clamping block and the first clamping block are clamped and engaged with both ends of the heat exchange tube. The second fixing plate is installed on the top of the tank body, and the second fixing plate is located on the side of the first chute away from the end groove; A threaded rod, which is threadedly engaged with the second fixed plate and rotatably engaged with the outer side of the sliding plate; The turntable is mounted on the end of the threaded rod furthest from the slide plate; The first connecting pipe is installed at one end of the heat exchange tube via a flange, and the end of the first connecting pipe away from the heat exchange tube is connected to the exhaust pipe at the top of the denitrification equipment. The second connecting pipe is installed at the other end of the heat exchange tube via a flange, and the end of the second connecting pipe away from the heat exchange tube is connected to external equipment.

[0006] Preferably, the waste heat utilization component further includes: The U-shaped plates are all installed on the top of the tank, and the U-shaped plates are located below the turntable; A groove is formed at the top of the inner wall of the U-shaped plate; The second chute is opened on the top of the tank body, and the second chute is located below the through groove; A sliding rod, which slides inside the second groove, with its top end passing through the inside of the groove and extending to the top of the outer side of the U-shaped plate; The third groove is located on one side of the inner side of the U-shaped plate; A limiting plate is installed on the outside of the slide rod, and the side of the limiting plate away from the slide rod is slidably engaged with the third slide groove; A preload spring is fitted on the outside of the slide bar, and the preload spring is located between the bottom of the limiting plate and the top of the tank. External gear, mounted on the edge of the turntable; An internal gear block is installed at the top of the slide bar, and the internal gear block meshes with the external gear. The limiting grooves are all formed on both sides of the inner wall of the first slide groove; A limiting block is slidably fitted inside a limiting groove, and the side of the limiting block away from the limiting groove is fixedly connected to both sides of the slide plate.

[0007] Preferably, the scraping assembly includes: The motor is installed on the outside of the tank. The connecting plate is installed on the output shaft of the motor; The scrapers are all installed at the bottom of both ends of the connecting plate, and the outer side of the scraper slides in contact with the inner wall of the tank.

[0008] Preferably, the protective component includes: Square box; Insert blocks are installed at equal intervals at the opening of the square box; The slots are equidistantly located at the bottom of the tank and are situated around the motor. The inserts and slots cooperate with each other.

[0009] Preferably, the sealing assembly includes: Cover plate; A sealing gasket is installed at the bottom of the cover plate; A sealing groove is formed at the top of the tank's feed pipe, and the sealing groove and the sealing gasket cooperate with each other.

[0010] Preferably, the thermal insulation component includes: Rock wool is bonded to the outside of the tank. Glass wool is bonded to the outside of rock wool.

[0011] The beneficial effects of this utility model are: 1. In this utility model, by setting up a waste heat utilization component, it is convenient to recover and utilize the waste heat of the regeneration tail gas. This solves the problem that traditional equipment cannot recover and utilize the waste heat of the regeneration tail gas, which requires additional consumption of natural gas or electricity to reheat the process medium, resulting in increased material costs. This improves the energy utilization rate, further enhances the applicability of the equipment, and is beneficial to practical application and operation.

[0012] 2. In this utility model, by setting up a scale scraping component, it is convenient to scrape off the scale generated on the inner wall of the tank, reducing manual cleaning; by setting up a protective component, it is convenient to protect the motor and extend the service life of the motor; by setting up a sealing component, it is convenient to seal the feed pipe of the tank; by setting up a heat insulation component, it is convenient to keep the tank warm, reducing the loss of heat energy in the tank and improving thermal efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall equipment structure from a bottom-view perspective.

[0014] Figure 2 This is a top-view schematic diagram of the overall equipment structure of this utility model.

[0015] Figure 3 This is a structural schematic diagram of the tank body of this utility model in cross-sectional view (labeled in component form).

[0016] Figure 4 This is a structural schematic diagram of the tank body of this utility model in cross-sectional view (labeled in detail).

[0017] Figure 5 For the present utility model Figure 4 Enlarged view of point A in the middle.

[0018] Figure 6 For the present utility model Figure 4 Enlarged view of point B in the middle.

[0019] Figure 7 For the present utility model Figure 4 A magnified view of point C in the middle.

[0020] Explanation of reference numerals in the attached figures: 1. Base; 2. Denitrification equipment; 3. Tank body; 4. Waste heat recovery assembly; 41. End slot; 42. Heat exchange tube; 43. First slide groove; 44. Slide plate; 45. First clamping block; 46. First fixing plate; 47. Second clamping block; 48. Second fixing plate; 49. Threaded rod; 410. Turntable; 411. U-shaped plate; 412. Second slide groove; 413. Slide rod; 414. Third slide groove; 415. Limiting plate; 416. Preload spring; 417. 418. External gear; 419. Internal gear block; 420. Limiting groove; 421. Limiting block; 422. First connecting pipe; 423. Through groove; 5. Scraping assembly; 51. Motor; 52. Connecting plate; 53. Scraper; 6. Insulation assembly; 61. Rock wool; 62. Glass wool; 7. Protective assembly; 71. Square box; 72. Insert block; 73. Slot; 8. Sealing assembly; 81. Cover plate; 82. Sealing gasket; 83. Sealing groove. Detailed Implementation

[0021] The following will be combined with the appendix Figures 1 to 7 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0022] Please see Figure 2 and 4 -6, This utility model embodiment provides a denitrification device for recycling waste heat from regenerated exhaust gas, comprising: The base 1 serves as the mounting carrier for the denitrification equipment 2 and the tank 3; Tank 3 serves as the mounting carrier for the waste heat recovery assembly 4, the scale scraping assembly 5, the heat insulation assembly 6, the protection assembly 7, and the sealing assembly 8; Waste heat utilization component 4 is used to utilize the waste heat of the regenerated exhaust gas. Waste heat utilization component 4 includes: The end slots 41 are all opened at the top of the inner wall of the tank body 3; The heat exchange tube 42 has two ends that slide into the interior of the two end slots 41 respectively. The first chute 43 is opened on the top of the tank body 3, and the two first chute 43 are located on both sides of the two end grooves 41. Slide 44, slide 44 is slidably fitted inside the first slide groove 43; The first clamping block 45 is installed on the inside of the slide plate 44; The first fixing plate 46 is installed on the side of the end groove 41 away from the first sliding groove 43; The second clamping block 47 is installed on the inner side of the first fixing plate 46, and the second clamping block 47 and the first clamping block 45 are clamped and engaged with both ends of the heat exchange tube 42. The second fixing plate 48 is installed on the top of the tank body 3, and the second fixing plate 48 is located on the side of the first chute 43 away from the end groove 41; Threaded rod 49 is threaded to the second fixed plate 48 and rotates to engage with the outer side of the sliding plate 44. Turntable 410 is installed at the end of threaded rod 49 away from slide plate 44; The first connecting pipe 421 is installed at one end of the heat exchange tube 42 via a flange, and the end of the first connecting pipe 421 away from the heat exchange tube 42 is connected to the exhaust pipe at the top of the denitrification equipment 2. The second connecting pipe 422 is installed at the other end of the heat exchange pipe 42 via a flange, and the end of the second connecting pipe 422 away from the heat exchange pipe 42 is connected to external equipment. U-shaped plates 411 are all installed on the top of the tank body 3, and the U-shaped plates 411 are located below the turntable 410; The slot 423 is formed at the top of the inner wall of the U-shaped plate 411; The second chute 412 is opened on the top of the tank body 3, and the second chute 412 is located below the through groove 423; The slide rod 413 slides inside the second slide groove 412, and the top of the slide rod 413 passes through the inside of the through groove 423 and extends to the top of the outer side of the U-shaped plate 411. The third groove 414 is opened on one side of the inner side of the U-shaped plate 411; The limiting plate 415 is installed on the outside of the slide bar 413, and the side of the limiting plate 415 away from the slide bar 413 slides in cooperation with the third slide groove 414. The preload spring 416 is sleeved on the outside of the slide bar 413, and the preload spring 416 is located between the bottom of the limiting plate 415 and the top of the tank body 3. External gear 417 is mounted on the edge of turntable 410; An internal gear block 418 is installed at the top of the slide bar 413, and the internal gear block 418 meshes with the external gear 417. The limiting grooves 419 are all opened on both sides of the inner wall of the first slide groove 43; The limiting block 420 is slidably fitted inside the limiting groove 419, and the side of the limiting block 420 away from the limiting groove 419 is fixedly connected to both sides of the slide plate 44.

[0023] In practical application, this embodiment involves moving the heat exchange tube 42 through the tank door into the tank 3, then passing both ends of the heat exchange tube 42 through the two end slots 41 at the top of the tank 3, and extending both ends of the heat exchange tube 42 to the top of the outer side of the tank 3, so that the inner sides of both ends of the heat exchange tube 42 contact the second clamping blocks 47 on the inner side of the first fixing plate 46. Then, the turntable 410 is manually rotated, causing the threaded rod 49 on the second fixing plate 48 to be screwed in, which in turn causes the two sliding plates 44 to slide towards each other in the two first sliding grooves 43, causing the two first clamping blocks 45 to move towards each other. This further causes the two first clamping blocks 45, together with the two second clamping blocks 47, to clamp and fix the two ends of the heat exchange tube 42. Then, the pre-pressed limiting plate 415 is released, and with the compression force of the pre-tightening spring 416, the sliding rod is moved. 413 slides upward in the second slide groove 412, thereby driving the inner tooth block 418 on the top of the slide rod 413 to move upward from the inside of the U-shaped plate 411 through the through groove 423 to the top of the outside of the U-shaped plate 411. Then the inner tooth block 418 locks with the outer gear 417 on the edge of the outer gear 417, further enhancing the clamping effect between the first clamping block 45 and the second clamping block 47. Then the first connecting pipe 421 and the second connecting pipe 422 connected to the top of the feed pipe of the denitrification equipment 2 are connected to the two ends of the heat exchange tube 42 through the flange. The regenerated tail gas is discharged from the inside of the denitrification equipment 2 into the heat exchange tube 42 through the limiting block 420, so that the heat exchange tube 42 is heated by the heat energy of the regenerated tail gas itself. Then the water in the tank 3 is heated by the heat energy indirectly generated by the heat exchange tube 42, realizing the operation of recycling the waste heat of the regenerated tail gas.

[0024] This embodiment, by setting up a waste heat utilization component 4, facilitates the recovery and utilization of waste heat from the regeneration tail gas. This solves the problem that traditional equipment cannot recover and utilize waste heat from the regeneration tail gas, which requires additional consumption of natural gas or electricity to reheat the process medium, resulting in increased material costs. It improves energy utilization, further enhances the applicability of the equipment, and is beneficial for practical application and operation.

[0025] In one embodiment, the diameter of the flanges at both ends of the heat exchange tube 42 is smaller than the diameter of the end groove 41, which facilitates the removal of the heat exchange tube 42 from the tank 3 after disassembly.

[0026] Please see Figure 4 In a preferred embodiment of this utility model, the scraping component 5 includes: Motor 51 is installed on the outside of tank 3; Connecting plate 52 is installed on the output shaft of motor 51; Scrapers 53 are installed at the bottom of both ends of the connecting plate 52, and the outer side of the scraper 53 slides in contact with the inner wall of the tank body 3.

[0027] In practical application, this embodiment uses a drive motor 51 to rotate the connecting plate 52, which in turn causes the scrapers 53 on both ends of the connecting plate 52 to rotate on the inner wall of the tank 3, thus achieving the operation of scraping scale.

[0028] In this embodiment, the scale removal component 5 is provided to facilitate the removal of scale generated on the inner wall of the tank 3, thereby reducing manual cleaning.

[0029] In one embodiment, the scraper 53 may be made of stainless steel and has rust resistance.

[0030] Please see Figure 4 In a preferred embodiment of this utility model, the protective component 7 includes: Square box 71; Insert blocks 72 are installed at equal intervals at the openings of the square box 71; Slots 73 are equidistantly provided at the bottom of the tank body 3, and slots 73 are located around the motor 51. The insert block 72 and slots 73 cooperate with each other.

[0031] In practical application, this embodiment uses four inserts 72 on the square box 71 to insert into four slots 73 at the bottom of the tank body 3, so that the square box 71 covers the motor 51 and protects the motor 51.

[0032] This embodiment provides a protective component 7 to facilitate protective operations on the motor 51 and extend the service life of the motor 51.

[0033] Please see Figure 3-4 In a preferred embodiment of the present invention, the sealing component 8 includes: Cover plate 81; Sealing gasket 82 is installed at the bottom of cover plate 81; The sealing groove 83 is located at the top of the feed pipe of the tank body 3, and the sealing groove 83 and the sealing gasket 82 cooperate with each other.

[0034] In practical application, the sealing gasket 82 at the bottom of the cover plate 81 is inserted into the sealing groove 83 on the top feed pipe of the tank body 3 to seal the feed pipe of the tank body 3.

[0035] In this embodiment, the sealing component 8 is provided to facilitate the sealing operation of the feed pipe of the tank 3.

[0036] Please see Figure 4 In a preferred embodiment of this utility model, the thermal insulation component 6 includes: Rock wool 61 is bonded to the outside of tank 3; Glass wool 62 is bonded to the outside of rock wool 61.

[0037] In practical applications, this embodiment uses rock wool 61 and glass wool 62 to insulate the tank body 3 by installing them on the outside of the tank body 3.

[0038] In this embodiment, by setting up the heat insulation component 6, it is convenient to perform heat insulation operation on the tank 3, reduce the loss of heat energy in the tank 3, and also improve thermal efficiency.

[0039] Based on the explanations and teachings in the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and any modifications and alterations to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A denitrification device for recycling waste heat from regenerated exhaust gas, characterized in that, include: The base (1) serves as the mounting carrier for the denitrification equipment (2) and the tank (3); The tank (3) serves as the mounting carrier for the waste heat recovery assembly (4), the scale scraping assembly (5), the heat insulation assembly (6), the protection assembly (7), and the sealing assembly (8); Waste heat utilization component (4) is used to perform waste heat utilization operation on regenerated tail gas; The waste heat utilization component (4) includes: The end slots (41) are all opened at the top of the inner wall of the tank (3); The heat exchange tube (42) has two ends that slide in contact with the interior of two end grooves (41); The first sluice (43) is opened on the top of the tank (3), and the two first sluices (43) are located on both sides of the two end slots (41); Slide plates (44), all of which slide in conjunction with the inside of the first groove (43); The first clamping block (45) is installed on the inside of the slide plate (44); The first fixing plate (46) is installed on the side of the end groove (41) away from the first slide groove (43); The second clamping block (47) is installed on the inner side of the first fixing plate (46), and the second clamping block (47) and the first clamping block (45) are clamped and engaged with both ends of the heat exchange tube (42); The second fixing plate (48) is installed on the top of the tank body (3), and the second fixing plate (48) is located on the side of the first chute (43) away from the end groove (41); The threaded rod (49) is threaded to the second fixed plate (48) and rotates to engage with the outer side of the sliding plate (44). A turntable (410) is mounted on the end of the threaded rod (49) away from the slide plate (44); The first connecting pipe (421) is installed at one end of the heat exchange tube (42) via a flange, and the end of the first connecting pipe (421) away from the heat exchange tube (42) is connected to the exhaust pipe at the top of the denitrification device (2); The second connecting pipe (422) is installed at the other end of the heat exchange tube (42) via a flange, and the end of the second connecting pipe (422) away from the heat exchange tube (42) is connected to an external device.

2. The denitrification equipment for recycling waste heat from regenerated exhaust gas according to claim 1, characterized in that, The waste heat utilization component (4) also includes: U-shaped plates (411) are installed on the top of the tank body (3), and the U-shaped plates (411) are located below the turntable (410); A through groove (423) is formed at the top of the inner wall of the U-shaped plate (411); The second chute (412) is opened on the top of the tank body (3), and the second chute (412) is located below the through groove (423); A slide rod (413) is slidably fitted inside the second slide groove (412), and the top end of the slide rod (413) passes through the inside of the through groove (423) and extends to the top of the outside of the U-shaped plate (411); The third groove (414) is opened on one side of the inner side of the U-shaped plate (411); A limiting plate (415) is installed on the outside of the slide bar (413), and the side of the limiting plate (415) away from the slide bar (413) is slidably engaged with the third slide groove (414); A preload spring (416) is fitted on the outside of the slide bar (413), and the preload spring (416) is located between the bottom of the limiting plate (415) and the top of the tank (3); An external gear (417) is mounted on the edge of a turntable (410); An internal gear block (418) is installed at the top of the slide bar (413), and the internal gear block (418) meshes with the external gear (417); The limiting grooves (419) are all opened on both sides of the inner wall of the first slide groove (43); The limiting block (420) is slidably fitted inside the limiting groove (419), and the side of the limiting block (420) away from the limiting groove (419) is fixedly connected to both sides of the slide plate (44).

3. The denitrification equipment for recycling waste heat from regenerated exhaust gas according to claim 1, characterized in that, The scraping assembly (5) includes: The motor (51) is installed on the outside of the tank body (3); The connecting plate (52) is installed on the output shaft of the motor (51); The scrapers (53) are all installed at the bottom of both ends of the connecting plate (52), and the outer side of the scrapers (53) slides in cooperation with the inner wall of the tank (3).

4. A denitrification device for recycling waste heat from regenerated exhaust gas according to claim 1, characterized in that, The protective component (7) includes: Square box (71); Inserts (72) are installed at equal intervals at the openings of the square box (71); The slots (73) are equidistantly located at the bottom of the tank (3), and the slots (73) are located around the motor (51). The insert (72) and the slots (73) cooperate with each other.

5. A denitrification device for recycling waste heat from regenerated exhaust gas according to claim 1, characterized in that, The sealing assembly (8) includes: Cover plate (81); A sealing gasket (82) is installed at the bottom of the cover plate (81); A sealing groove (83) is provided on the top of the feed pipe of the tank body (3), and the sealing groove (83) and the sealing gasket (82) cooperate with each other.

6. A denitrification device for recycling waste heat from regenerated exhaust gas according to claim 1, characterized in that, The thermal insulation component (6) includes: Rock wool (61) is pasted and connected to the outside of the tank body (3); Glass wool (62) is attached to the outside of rock wool (61).

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