A waste heat recovery type coke oven flue gas recovery and treatment device

Abstract

The present invention relates to the technical field of flue gas recovery and treatment, and discloses a waste heat recovery type coke oven flue gas recovery and treatment device, including a desulfurization tower body, a support plate is arranged above the desulfurization tower body, a plurality of through holes for flue gas circulation are opened on the support plate, a plurality of defogger components are fixed on the support plate, the defogger component includes an annular base, the annular base is fixed on the support plate, and the annular base is communicated with the through holes, a plurality of flue gas deflectors equidistantly distributed in a circle are fixed on the annular base, a deflection groove is arranged between two of the flue gas deflectors, and a guide bracket is arranged above the flue gas deflector; the scraper can be driven to move vertically on the surface of the flue gas deflector, so as to facilitate the scraping of attached dust and dirt, thereby improving the efficiency of flue gas circulation, saving time, labor and time, being convenient and quick, and convenient for cleaning when the desulfurization tower body is operating normally.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas recovery and treatment, and in particular to a waste heat recovery type coke oven flue gas recovery and treatment device. Background Art

[0002] The flue gas temperature of the coke oven flue is usually between 180℃ and 300℃, and the heat brought out by this part accounts for about 17% of the total heat output of the coke oven. At present, most coking plants directly discharge this part of the exhaust gas into the atmosphere, resulting in a waste of energy. In order to solve this problem, the current technology of recycling the waste heat of coke oven flue gas to produce steam using the heat pipe principle transfers the heat in the flue gas to water through the heat pipe to vaporize it. The generated steam can be incorporated into the steam pipe network of the coking plant for use in various production workshops. The advantages of this technology are low investment cost, quick effect, and the ability to effectively recycle sensible heat in flue gas and convert it into usable steam energy, which helps to improve energy efficiency, reduce environmental pollution, and also brings significant economic benefits to enterprises. The process of flue gas recovery and treatment includes multiple links such as flue gas collection, purification, and reuse. In the purification process, the flue gas is desulfurized by spraying lime water through the desulfurization tower. At the same time, the desulfurized flue gas needs to pass through the set demister plate to deal with the droplets entrained in the flue gas in order to ensure the mass transfer efficiency, reduce the loss of valuable materials, and improve the operation of the subsequent compressor of the tower. It can also effectively remove droplets in the flue gas, ensure the mass transfer efficiency of the tower shrinkage, and reduce the plate spacing to further improve the desulfurization efficiency.

[0003] At present, due to the large amount of impurities in the flue gas during the desulfurization process and the calcium sulfite produced by the lime water during the desulfurization of the flue gas, the defogger plate will be scaled and blocked, which will reduce the flue gas flow area and the flue gas flow rate, greatly increase the resistance of the defogger plate, and cause the demisting efficiency of the defogger plate to deteriorate, increase the output of the booster fan, increase the power consumption, and more seriously cause the fan to stall, affecting the safety and reliability of the unit. Therefore, the defogger plate needs to be cleaned in time after scaling. Since the defogger plate is installed inside the desulfurization tower, the scaling condition cannot be observed in time, and it is necessary to manually remove the defogger plate from the desulfurization tower regularly and then clean the defogger plate. The cleaning process is time-consuming and labor-intensive, and the cleaning efficiency is low, which greatly affects the efficiency of flue gas recovery and treatment. Summary of the invention

[0004] The present invention provides a waste heat recovery type coke oven flue gas recovery and treatment device, which has the purpose of driving a scraper to scrape off dust and dirt attached to the surface of the flue gas deflector, which not only improves the efficiency of flue gas circulation but also improves the effect of flue gas demisting, saves time and effort, is convenient and quick, and is convenient to clean when the desulfurization tower body is operating normally, thereby improving the beneficial effect of flue gas recovery and treatment efficiency. It solves the problem mentioned in the above background technology that since the defogger plate is installed inside the desulfurization tower, the scaling condition cannot be observed in time, and the defogger plate needs to be manually removed from the desulfurization tower regularly and then cleaned. The cleaning process is time-consuming and labor-intensive, and the cleaning efficiency is low, which greatly affects the efficiency of flue gas recovery and treatment.

[0005] The present invention provides the following technical solution: a waste heat recovery type coke oven flue gas recovery and treatment device, comprising a desulfurization tower body, a support plate is arranged above the desulfurization tower body, a plurality of through holes for flue gas circulation are opened on the support plate, a plurality of demisting components are fixed on the support plate, the demisting components comprise an annular base, the annular base is fixed on the support plate, and the annular base is connected with the through holes, a plurality of flue gas baffles equidistantly distributed on the circumference are fixed on the annular base, a baffle notch is arranged between two of the flue gas baffles, and a guide bracket is arranged above the flue gas baffle;

[0006] A plurality of hollow columns are slidably connected to the guide bracket, a push rod assembly for adjusting the height of the hollow columns is installed on the desulfurization tower body, a plurality of scrapers are arranged at the lower end of the hollow column, and the scrapers are inserted into the deflection slot.

[0007] As an optional solution of the waste heat recovery type coke oven flue gas recovery and treatment device described in the present invention, the push rod assembly includes an electric push rod, which is fixed on the desulfurization tower body. A mounting bracket is arranged above the desulfurization tower body, and the mounting bracket is fixedly connected to several of the hollow columns. The telescopic end of the electric push rod is fixedly connected to the mounting bracket.

[0008] As an optional solution of the waste heat recovery type coke oven flue gas recovery and treatment device described in the present invention, a smoke exhaust port is arranged above the desulfurization tower body, and an induced draft fan is fixed on the side wall of the desulfurization tower body, and the induced draft fan is connected to the smoke exhaust port.

[0009] As an optional solution of the waste heat recovery type coke oven flue gas recovery and treatment device described in the present invention, the scraper is respectively provided with a first conical portion, a second conical portion and a third conical portion, the first conical portion is inserted on the outer side of the deflection groove, the second conical portion is respectively fixedly connected to the first conical portion and the third conical portion, the third conical portion is inserted on the inner side of the deflection groove, and the first conical portion, the second conical portion and the third conical portion are all fixed with convex strips.

[0010] As an optional solution of the waste heat recovery type coke oven flue gas recovery and treatment device described in the present invention, a plurality of circumferentially equidistantly distributed resistance rods are arranged below the hollow column, the resistance rods are elastically connected to the hollow column through a first spring, and one end of the resistance rods is fixedly connected to the scraper.

[0011] As an optional solution of the waste heat recovery type coke oven smoke recovery and treatment device described in the present invention, an annular guide plate is arranged in the hollow column, a guide rod is slidably connected in the annular guide plate, a conical contact head is fixed to the lower end of the guide rod, the lower end of the conical contact head contacts with a plurality of the contact rods, a contact wedge is fixed to the upper end of the guide rod, and the contact wedge is elastically connected to the annular guide plate through a second spring.

[0012] As an optional solution of the waste heat recovery type coke oven flue gas recovery and treatment device of the present invention, a resistance bar is arranged in the hollow column, the resistance bar is elastically connected to the hollow column through a third spring, and the bottom of the resistance bar is in resistance with the resistance wedge block.

[0013] As an optional solution of the waste heat recovery type coke oven smoke recovery and treatment device described in the present invention, an L-shaped interference frame is provided on one side of the hollow column, a strip groove is opened on the surface of the hollow column, a plurality of arc-shaped interference blocks are fixed on the interference strip, the L-shaped interference frame is fixed on the guide bracket, and one end of the L-shaped interference frame is located in the strip groove, and the L-shaped interference frame interferes with the arc-shaped interference block.

[0014] As an optional solution of the waste heat recovery type coke oven flue gas recovery and treatment device of the present invention, the lower end of the hollow column is rotatably connected with a circular wiping head, a round rod is fixed on the circular wiping head, and a gear is fixed on the round rod.

[0015] As an optional solution of the waste heat recovery type coke oven flue gas recovery and treatment device described in the present invention, a sliding rod is fixed on the side wall of the hollow column, a rack is inserted at one end of the sliding rod, the rack is elastically connected to the hollow column through a fourth spring, the rack and the gear are meshed with each other, a second interference wedge is fixed above the rack, a wedge-shaped interference strip is fixed below the conical interference head, and the wedge-shaped interference strip interferes with the second interference wedge.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the waste heat recovery type coke oven flue gas recovery and treatment device, a plurality of demisting components are conveniently installed through the support plate arranged on the desulfurization tower body. When the annular base of the demisting component is connected with the through hole opened on the support plate, the flue gas in the desulfurization tower body can flow into the deflection groove through the through hole for demisting treatment after desulfurization, so that the desulfurized flue gas can contact with a plurality of flue gas deflectors in the demisting component. The push rod assembly arranged can drive the hollow column to slide vertically on the guide bracket, so that a plurality of scrapers arranged under the hollow column can be inserted into the deflection groove and contact with the surface of the flue gas deflector. When the push rod assembly drives the hollow column to move vertically up and down, the scraper can be driven to scrape off the dust and dirt attached to the surface of the flue gas deflector, which not only improves the efficiency of flue gas circulation but also improves the effect of flue gas demisting, saves time, labor, is convenient and quick, is convenient for cleaning when the desulfurization tower body is operating normally, and improves the efficiency of flue gas recovery and treatment.

[0018] 2. In the waste heat recovery type coke oven flue gas recovery and treatment device, the friction strip elastically connected in the hollow column can be installed with a plurality of arc-shaped friction blocks. When the friction strip moves downward synchronously with the hollow column, it can achieve the purpose of continuous friction with the L-shaped friction frame fixed on the guide bracket, so that the friction strip automatically reciprocates in the horizontal direction inside the hollow column and can conflict with the friction wedge block, so that the guide rod fixed at the lower end of the friction wedge block reciprocates vertically on the annular guide piece, thereby achieving the purpose of reciprocating friction between the conical friction head and the friction rods installed on the plurality of scrapers, so that the plurality of scrapers can be in the baffle groove. The scraper can reciprocate in the opening to handle dust and dirt, thereby improving the cleaning effect of the smoke deflector. The first conical portion arranged on the scraper can clean the outer smoke outlet of the deflection slot, the second conical portion arranged can clean the middle smoke outlet of the deflection slot, and the third conical portion arranged can clean the inner smoke inlet of the deflection slot, so that the scraper can perform targeted cleaning according to the shape of the deflection slot. At the same time, the convex strips arranged can reduce the cleaning dead angle between the scraper and the surface of the smoke deflector, so that the cleaning dead angle can be reduced when the scraper reciprocates, thereby greatly improving the cleaning effect of the smoke deflector;

[0019] 3. In the waste heat recovery type coke oven flue gas recovery and treatment device, the circular wiping head connected by the lower end of the hollow column can move downward synchronously with the hollow column, which is convenient for cleaning the dust and dirt on the sides of several flue gas deflectors, and can further reduce the cleaning dead angle of the flue gas deflectors. When the circular wiping head is inserted into the through holes of the annular base and the support plate, it is convenient to clean the dust attached to the inner wall of the annular base and the through holes, so as to reduce the airflow resistance and improve the flue gas circulation efficiency. The wedge-shaped friction bar fixed at the bottom of the conical friction head and the second friction wedge block fixed above the rack are linked to each other, so that the wedge-shaped friction bar and the second friction wedge block can be driven to conflict with each other when the conical friction head moves downward, so as to promote the rack to move horizontally on the sliding rod, thereby driving the gear meshing with the rack to rotate, and promoting the circular wiping head fixed at the lower end of the round rod to rotate back and forth, which greatly improves the cleaning effect of dust and dirt and further improves the efficiency of flue gas recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is one of the three-dimensional structural schematic diagrams of the present invention.

[0021] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 3 This is one of the schematic diagrams of the structure of the defogger assembly of the present invention.

[0023] Figure 4 This is the second schematic diagram of the structure of the defogger assembly of the present invention.

[0024] Figure 5 It is a cross-sectional view of the scraper structure of the present invention.

[0025] Figure 6 It is a cross-sectional view of the hollow column structure of the present invention.

[0026] Figure 7 It is a cross-sectional view of the structure of the defogger assembly of the present invention.

[0027] Figure 8 for Figure 6 A partial enlarged schematic diagram in the middle.

[0028] In the figure: 1. desulfurization tower body; 101. electric push rod; 102. mounting bracket; 2. support plate; 201. annular base; 202. flue gas baffle; 203. baffle slot; 3. through hole; 4. guide bracket; 5. hollow column; 6. scraper; 61. first conical part; 62. second conical part; 63. third conical part; 64. convex strip; 7. exhaust port; 8. induced draft fan; 9. resistance rod; 10. first elastic Spring; 11, annular guide plate; 12, guide rod; 13, conical contact head; 14, contact wedge; 15, second spring; 16, contact strip; 17, third spring; 18, L-shaped contact frame; 19, strip groove; 20, arc-shaped contact block; 21, circular wiping head; 22, round rod; 23, gear; 24, sliding rod; 25, rack; 26, fourth spring; 27, second contact wedge; 28, wedge-shaped contact strip. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1

[0031] See also Figure 1-Figure 8 A waste heat recovery type coke oven flue gas recovery and treatment device comprises a desulfurization tower body 1, a support plate 2 is arranged above the desulfurization tower body 1, a plurality of through holes 3 for flue gas circulation are opened on the support plate 2, a plurality of demisting components are fixed on the support plate 2, the demisting components comprise an annular base 201, the annular base 201 is fixed on the support plate 2, and the annular base 201 is connected with the through holes 3, a plurality of flue gas baffles 202 equidistantly distributed on the circumference are fixed on the annular base 201, a baffle notch 203 is arranged between two flue gas baffles 202, and a guide bracket 4 is arranged above the flue gas baffles 202;

[0032] A plurality of hollow columns 5 are slidably connected to the guide bracket 4 , a push rod assembly for adjusting the height of the hollow columns 5 is installed on the desulfurization tower body 1 , a plurality of scrapers 6 are arranged at the lower end of the hollow column 5 , and the scrapers 6 are inserted into the deflection slot 203 .

[0033] The push rod assembly includes an electric push rod 101, which is fixed on the desulfurization tower body 1. A mounting bracket 102 is arranged above the desulfurization tower body 1. The mounting bracket 102 is fixedly connected to a plurality of hollow columns 5. The telescopic end of the electric push rod 101 is fixedly connected to the mounting bracket 102.

[0034] A smoke exhaust port 7 is arranged above the desulfurization tower body 1 , and an induced draft fan 8 is fixed on the side wall of the desulfurization tower body 1 , and the induced draft fan 8 is connected to the smoke exhaust port 7 .

[0035] After the flue gas in the desulfurization tower body 1 is desulfurized, it can enter the deflection slots 203 of the demisting groups along the through holes 3 opened on the support plate 2, so that the desulfurized flue gas can contact with the flue gas deflectors 202 in the demisting assembly, so as to separate the water mist in the flue gas. For a long time, dust and dirt will adhere to the surface of the flue gas deflectors 202, thereby affecting the efficiency of flue gas circulation. It is necessary to clean the dust and dirt attached to the flue gas deflectors 202. Figure 1-Figure 4 In the initial state, several scrapers 6 arranged at the lower end of the hollow column 5 are inserted above the deflection groove 203 and contact the surface of the flue gas deflector 202. When the electric push rod 101 of the push rod assembly drives the mounting bracket 102 to move vertically, it can drive the hollow column 5 to slide on the guide bracket 4, which can prompt the several scrapers 6 at the lower end of the hollow column 5 to move vertically up and down in the deflection groove 203, so as to facilitate the purpose of scraping off the dust and dirt attached to the surface of the flue gas deflector 202, which not only improves the efficiency of flue gas circulation but also improves the effect of flue gas demisting, saves time, labor, is convenient and fast, and is convenient for cleaning when the desulfurization tower body 1 is operating normally, thereby improving the efficiency of flue gas recovery and treatment. After the flue gas is demisted, the adsorption force generated by the induced draft fan 8 prompts the flue gas to be quickly discharged from the exhaust port 7.

[0036] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-Figure 8 The scraper 6 is respectively provided with a first conical portion 61, a second conical portion 62 and a third conical portion 63. The first conical portion 61 is inserted into the outer side of the deflection groove 203. The second conical portion 62 is fixedly connected to the first conical portion 61 and the third conical portion 63 respectively. The third conical portion 63 is inserted into the inner side of the deflection groove 203. The first conical portion 61, the second conical portion 62 and the third conical portion 63 are all fixed with convex strips 64.

[0037] A plurality of circumferentially equidistantly distributed abutment rods 9 are provided below the hollow column 5 . The abutment rods 9 are elastically connected to the hollow column 5 via a first spring 10 , and one end of the abutment rods 9 is fixedly connected to the scraper blade 6 .

[0038] An annular guide piece 11 is provided in the hollow column 5, and a guide rod 12 is slidably connected in the annular guide piece 11. A conical contact head 13 is fixed to the lower end of the guide rod 12, and the lower end of the conical contact head 13 contacts with a plurality of contact rods 9. A contact wedge 14 is fixed to the upper end of the guide rod 12, and the contact wedge 14 is elastically connected to the annular guide piece 11 through a second spring 15.

[0039] An abutment bar 16 is disposed in the hollow column 5 . The abutment bar 16 is elastically connected to the hollow column 5 via a third spring 17 . The lower part of the abutment bar 16 abuts against the abutment wedge 14 .

[0040] An L-shaped interference frame 18 is provided on one side of the hollow column 5, a strip groove 19 is opened on the surface of the hollow column 5, a plurality of arc-shaped interference blocks 20 are fixed on the interference strip 16, the L-shaped interference frame 18 is fixed on the guide bracket 4, and one end of the L-shaped interference frame 18 is located in the strip groove 19, and the L-shaped interference frame 18 interferes with the arc-shaped interference block 20.

[0041] In order to improve the cleaning effect of the scraper 6, refer to Figure 5-Figure 7 , the resistance strip 16 elastically connected in the hollow column 5 can be installed with several arc-shaped resistance blocks 20, and when the resistance strip 16 moves downward synchronously with the hollow column 5, it can achieve the purpose of continuous resistance with the L-shaped resistance frame 18 fixed on the guide bracket 4, and the third spring 17 continuously stores force and releases elastic force, so that the resistance strip 16 can automatically reciprocate in the horizontal direction inside the hollow column 5, and conflict with the resistance wedge 14, so that the resistance wedge 14 is affected by the resistance force and drives the guide rod 12 fixed at the lower end to slide vertically reciprocatingly on the annular guide sheet 11, and at the same time, the second spring 15 continuously stores force and releases elastic force, so as to achieve the purpose of moving the conical resistance head 13 downward and conflicting with the resistance rods 9 installed on several scrapers 6, and at the same time, the first spring 10 continuously stores force and releases elastic force, so that several scrapers 6 can reciprocate in the deflection groove 203 to remove dust and dirt, thereby improving the cleaning effect of the flue gas deflector 202;

[0042] In order to achieve targeted cleaning of the flue gas baffles 202 on both sides of the baffle slot 203, refer to Figure 5 When the scraper 6 moves back and forth, the first conical portion 61 arranged on the scraper 6 can clean the outer smoke outlet of the deflection slot 203, the second conical portion 62 arranged can clean the middle smoke outlet of the deflection slot 203, and the third conical portion 63 arranged can clean the inner smoke inlet of the deflection slot 203, so that the scraper 6 can perform targeted cleaning according to the shape of the deflection slot 203. At the same time, the convex strip 64 arranged can reduce the cleaning dead angle of the scraper 6 and the surface of the smoke deflector 202, so that the cleaning dead angle can be reduced when the scraper 6 moves back and forth, thereby greatly improving the cleaning effect of the smoke deflector 202.

[0043] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 2. For details, please refer to Figure 1-Figure 8 The lower end of the hollow column 5 is rotatably connected with a circular wiping head 21 , a round rod 22 is fixed on the circular wiping head 21 , and a gear 23 is fixed on the round rod 22 .

[0044] A sliding rod 24 is fixed on the side wall of the hollow column 5, and a rack 25 is inserted at one end of the sliding rod 24. The rack 25 is elastically connected to the hollow column 5 through a fourth spring 26. The rack 25 and the gear 23 are meshed with each other. A second interference wedge 27 is fixed above the rack 25, and a wedge-shaped interference strip 28 is fixed below the conical interference head 13. The wedge-shaped interference strip 28 interferes with the second interference wedge 27.

[0045] In order to improve the efficiency of smoke flow and reduce airflow resistance, it is necessary to remove dust and dirt in the annular base 201 and the through hole 3 of the support plate 2. Figure 7-Figure 8 The circular wiping head 21 rotatably connected to the lower end of the hollow column 5 can move downward synchronously with the hollow column 5, so as to facilitate the cleaning of dust and dirt on the sides of the several smoke deflectors 202, and further reduce the cleaning dead angle of the smoke deflectors 202. When the circular wiping head 21 is inserted into the annular base 201 and the through hole 3 of the support plate 2, it is convenient to clean the dust attached to the inner wall of the annular base 201 and the through hole 3, so as to reduce the air flow resistance and improve the smoke flow efficiency. At the same time, the wedge-shaped abutment strip 28 fixed below the conical abutment head 13 and the The second interfering wedge 27 fixed above the rack 25 is linked to achieve the purpose of driving the wedge-shaped interfering strip 28 to interfere with the second interfering wedge 27 when the conical interfering head 13 moves downward, causing the rack 25 to move horizontally on the sliding rod 24. At the same time, the fourth spring 26 accumulates force to cause the rack 25 to move horizontally on the sliding rod 24, thereby driving the gear 23 meshing with the rack 25 to rotate, causing the circular wiping head 21 fixed at the lower end of the round rod 22 to rotate back and forth, greatly improving the cleaning effect of dust and dirt, and further improving the efficiency of flue gas recovery.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A waste heat recovery type coke oven flue gas recovery and treatment device, comprising a desulfurization tower body (1), characterized in that: A support plate (2) is arranged above the desulfurization tower body (1), and a plurality of through holes (3) for flue gas circulation are provided on the support plate (2). A plurality of demisting components are fixed on the support plate (2), and the demisting components include an annular base (201), the annular base (201) is fixed on the support plate (2), and the annular base (201) is connected to the through holes (3), a plurality of flue gas baffles (202) equidistantly distributed around the circumference are fixed on the annular base (201), a baffle notch (203) is arranged between two flue gas baffles (202), and a guide bracket (4) is arranged above the flue gas baffles (202); A plurality of hollow columns (5) are slidably connected to the guide bracket (4); a push rod assembly for adjusting the height of the hollow columns (5) is installed on the desulfurization tower body (1); a plurality of scrapers (6) are arranged at the lower end of the hollow column (5); and the scrapers (6) are inserted into the baffle slots (203); The push rod assembly comprises an electric push rod (101), the electric push rod (101) being fixed on the desulfurization tower body (1), a mounting bracket (102) being arranged above the desulfurization tower body (1), the mounting bracket (102) being fixedly connected to a plurality of the hollow columns (5), and a telescopic end of the electric push rod (101) being fixedly connected to the mounting bracket (102); A smoke exhaust port (7) is arranged above the desulfurization tower body (1), an induced draft fan (8) is fixed on the side wall of the desulfurization tower body (1), and the induced draft fan (8) is connected to the smoke exhaust port (7); The scraper blade (6) is respectively provided with a first conical portion (61), a second conical portion (62) and a third conical portion (63); the first conical portion (61) is inserted into the outer side of the deflection slot (203); the second conical portion (62) is fixedly connected to the first conical portion (61) and the third conical portion (63); the third conical portion (63) is inserted into the inner side of the deflection slot (203); and convex strips (64) are fixed to the first conical portion (61), the second conical portion (62) and the third conical portion (63); A plurality of circumferentially equidistantly distributed abutment rods (9) are provided below the hollow column (5); the abutment rods (9) are elastically connected to the hollow column (5) via a first spring (10); one end of the abutment rod (9) is fixedly connected to the scraper (6); An annular guide piece (11) is arranged in the hollow column (5), a guide rod (12) is slidably connected in the annular guide piece (11), a conical contact head (13) is fixed at the lower end of the guide rod (12), the lower end of the conical contact head (13) contacts with a plurality of the contact rods (9), and a contact wedge (14) is fixed at the upper end of the guide rod (12), and the contact wedge (14) is elastically connected to the annular guide piece (11) via a second spring (15).

2. The waste heat recovery type coke oven flue gas recovery and treatment device according to claim 1 is characterized in that: A resistance strip (16) is arranged in the hollow column (5), and the resistance strip (16) is elastically connected to the hollow column (5) via a third spring (17), and the lower part of the resistance strip (16) is in resistance with the resistance wedge (14).

3. The waste heat recovery type coke oven flue gas recovery and treatment device according to claim 2 is characterized in that: An L-shaped abutment frame (18) is provided on one side of the hollow column (5), a strip groove (19) is provided on the surface of the hollow column (5), a plurality of arc-shaped abutment blocks (20) are fixed on the abutment strip (16), the L-shaped abutment frame (18) is fixed on the guide bracket (4), one end of the L-shaped abutment frame (18) is located in the strip groove (19), and the L-shaped abutment frame (18) abuts against the arc-shaped abutment blocks (20).

4. The waste heat recovery type coke oven flue gas recovery and treatment device according to claim 3 is characterized in that: The lower end of the hollow column (5) is rotatably connected to a circular wiping head (21), a round rod (22) is fixed to the circular wiping head (21), and a gear (23) is fixed to the round rod (22).

5. The waste heat recovery type coke oven flue gas recovery and treatment device according to claim 4 is characterized in that: A sliding rod (24) is fixed on the side wall of the hollow column (5), a rack (25) is inserted at one end of the sliding rod (24), the rack (25) is elastically connected to the hollow column (5) via a fourth spring (26), the rack (25) and the gear (23) are meshed with each other, a second abutting wedge (27) is fixed above the rack (25), a wedge-shaped abutting strip (28) is fixed below the conical abutting head (13), and the wedge-shaped abutting strip (28) abuts against the second abutting wedge (27).

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