A dry coke quenching primary dust collector and dust removal method

Abstract

The present invention relates to the field of dust removal technology, and specifically to a dry quenching primary dust collector and a dust removal method, comprising a shell, an air inlet, an air outlet and a dust outlet are provided on the shell, a retaining wall for assisting dust reduction is provided between the air inlet and the air outlet, the retaining wall comprises a main wall and an arched wall provided above the main wall, and the bottom of the main wall is supported by an elastic brick support assembly. The main wall comprises a left wall and a right wall which are spaced apart, a sealed cavity is formed between the left wall and the right wall, and a telescopic mechanism which allows the left wall and the right wall to move relative to or back to each other is provided in the sealed cavity. The present invention can better adapt to the shape and stress conditions of the main wall in the horizontal direction by providing a telescopic mechanism between the left wall and the right wall, and the elastic brick support assembly provided at the bottom of the main wall can better adapt to the shape and stress conditions of the main wall in the vertical direction, thereby improving the service life of the main wall as a whole and reducing the risk of collapse of the main wall.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal, and in particular to a dry coke quenching primary dust collector and a dust removal method. Background Art

[0002] Coke dry quenching is a coke quenching process method compared to wet quenching. It uses inert gas to cool down the red coke to recover the heat of the coke and generate steam, thereby achieving the purpose of energy saving, environmental protection and improving coke quality.

[0003] The high-temperature gas coming out of the annular channel of the dry quenching furnace contains a large amount of coke particles and coke powder. If it enters the boiler directly without dust removal, it will flush the boiler tubes, reduce the life of the boiler, and eventually destroy the stable operation of the entire cooling circulation system. Therefore, a primary dust collector is set between the dry quenching furnace outlet and the boiler inlet. The primary dust collector adopts gravity sedimentation, which has the advantages of simple structure, reliable structure and high strength. The primary dust collector is divided into two structural forms according to whether there is a large retaining wall. For the dust removal structure with a retaining wall, during specific use, the retaining wall is provided with two expansion joints. After the dry quenching furnace is heated and cooled, some cracks will appear. These cracks will not expand and close along the expansion joints due to the lack of external force. Under the action of the circulating gas, the fire mud falls off the gap, causing gas leakage from the retaining wall. The gap size gradually increases and becomes more numerous, causing the refractory materials around the gas leakage gap to loosen and fall off due to external force, resulting in holes. The holes will gradually expand, causing the retaining wall to collapse completely; in addition Under high temperature conditions, dust adhered to the surface of the retaining wall may sinter to form a hard layer, which will accelerate the wear and damage of the retaining wall, increase the weight of the wall, cause the risk of collapse, and shorten its service life; during the dust removal process, high-temperature flue gas enters from one end, and the part of the primary dust collector retaining wall corresponding to the smoke inlet duct will continue to be subjected to a greater impact force than the surrounding area. Since the temperature of the dry quenching flue gas after being discharged from the dry quenching furnace is 900℃-980℃, the primary dust collector retaining wall is heated unevenly, easily deformed, and causes wall collapse.

[0004] In the prior art, a Chinese patent application document with application publication number CN117959834A discloses a primary dust collector structure, including an inlet straight section, a descending slope, an ash discharge port, an ascending slope and an outlet straight section connected in sequence; a plurality of vertical retaining walls are arranged at intervals between the inlet straight section and the outlet straight section, and the plurality of vertical retaining walls are staggered up and down, the upper part of the lower retaining wall is open, and the lower part of the upper retaining wall is open, forming a serpentine channel. By arranging a plurality of vertical small retaining walls at intervals between the inlet straight section and the outlet straight section, and staggering the plurality of vertical small retaining walls up and down to replace the large retaining walls of the prior art, it is not easy to collapse, thereby ensuring normal production. The above technical scheme improves the stability of the overall structure by optimizing the structural distribution of the retaining walls. However, under high temperature conditions, the retaining wall structure will still experience thermal expansion. When the equipment stops using, thermal expansion and contraction will cause cracks in the wall, increasing the risk of collapse. Summary of the invention

[0005] The invention provides a primary dust collector for dry coke quenching and a dust removal method, so as to solve the technical problems in the prior art that the expansion joint of the retaining wall is not designed reasonably and the retaining wall collapse is easy to occur.

[0006] In order to solve the above problems, the CDQ primary dust collector and dust removal method provided by the present invention adopt the following technical solutions:

[0007] A dry coke quenching primary dust collector comprises a shell, the shell is provided with an air inlet, an air outlet and a dust outlet, a retaining wall for assisting dust reduction is provided between the air inlet and the air outlet, the retaining wall comprises a main wall and an arched wall arranged above the main wall, and the bottom of the main wall is supported by an elastic supporting brick assembly.

[0008] The main wall comprises a left wall and a right wall which are spaced apart from each other. A sealed cavity is formed between the left wall and the right wall. A telescopic mechanism is arranged in the sealed cavity to allow the left wall and the right wall to move relative to or opposite to each other.

[0009] The telescopic mechanism includes a piston cylinder fixed to one side of the sealing chamber, a piston plate arranged in the piston cylinder, and a piston rod with one end extending out of the piston cylinder. When the left wall and the right wall move relative to or back to back, the piston rod is pushed to move. A guide member is provided on one side of the piston cylinder, and the guide member is used to guide the grease in the piston cylinder from one side of the piston plate to the other side of the piston plate.

[0010] By adopting the above technical scheme, a main wall formed by a left wall and a right wall and a telescopic mechanism between the left wall and the right wall can alleviate the shape change of the main wall caused by thermal expansion and contraction in the lateral direction. In addition, the elastic brick support assembly arranged at the bottom of the main wall can alleviate the shape change of the main wall caused by thermal expansion and contraction in the vertical direction, thereby improving the service life of the main wall as a whole and reducing the risk of collapse of the main wall.

[0011] Furthermore, first U-shaped side steel plates are provided on the opposite sides of the left wall and the right wall, and sealing vertical plates are slidably provided on the front and rear sides between the two first U-shaped side steel plates, and the sealing cavity is formed between the two first U-shaped side steel plates and the two sealing vertical plates;

[0012] The bottom end of the sealing vertical plate is fixedly connected to the elastic brick supporting assembly, and the top end of the sealing vertical plate is arc-shaped and abuts against the lower end surface of the arched wall.

[0013] Furthermore, one end of the piston rod extending out of the piston cylinder is fixedly connected to the opposite first U-shaped side steel plate, and a spring is sleeved on the extending section of the piston rod.

[0014] Furthermore, the number of the piston rods is n and they are distributed vertically at intervals, wherein n≥2.

[0015] By adopting the above technical solution, by setting the first U-shaped side steel plates on the opposite sides of the left wall and the right wall, and slidingly setting the sealing vertical plate between the two first U-shaped side steel plates, the sealing performance of the sealing chamber is effectively enhanced. In addition, the pressure borne by the piston rod in the sealing chamber is more uniform and reasonable, which increases the adaptability and reliability of the telescopic mechanism.

[0016] Furthermore, the guide member includes a cylindrical piston cylinder fixed on one of the sealing vertical plates, a support shaft is rotatably provided inside the cylindrical piston cylinder, a rotating piston plate is provided on the support shaft, the free end of the rotating piston plate abuts against the side wall of the cylindrical piston cylinder, and a fixed baffle is also provided inside the cylindrical piston cylinder.

[0017] A first oil chamber and a second oil chamber are respectively formed between the fixed baffle and the rotary piston blade, and both the first oil chamber and the second oil chamber are communicated with the piston cylinder.

[0018] Furthermore, the first oil chamber and the second oil chamber are provided with a first oil pipe and a second oil pipe respectively, the first oil pipe is communicated with the rodless chamber of the piston cylinder, and the second oil pipe is communicated with the rod chamber of the piston cylinder.

[0019] By adopting the above technical solution, during the movement of the piston rod, the grease in the first oil chamber and the second oil chamber is guided from one side of the piston plate to the other side of the piston plate, so that the grease in the piston cylinder is effectively guided and circulated, and the stability of the movement of the piston plate can be guaranteed.

[0020] Furthermore, the cylindrical piston cylinder is fixed on a sealing vertical plate opposite to the air inlet, the end of the support shaft opposite to the air outlet extends out of the cylindrical piston cylinder and passes through the corresponding sealing vertical plate, and a dust scraper is provided on the extended end of the support shaft.

[0021] By adopting the above technical solution, the scraper plate is driven to clean the dust on the front of the main wall through the circular guiding effect of the guide member, so as to avoid the dust sintering to form a hard layer and affect the stability of the main wall structure.

[0022] Furthermore, a sealing vertical plate opposite to the air inlet is provided with a deflector supported by pillars.

[0023] By adopting the above technical solution, the main wall is heated and impacted more evenly through the air deflector, which helps to reduce thermal stress concentration and deformation caused by local high temperature, thereby protecting the structural integrity and stability of the main wall.

[0024] Furthermore, the elastic brick supporting assembly includes sealing transverse plates arranged on both sides of the bottom of the main wall, both ends of the sealing transverse plates are fixedly connected with side support ears, and the side support ears are fixedly supported by the shell, and an arc-shaped elastic plate for supporting the main wall is provided between the two sealing transverse plates, and both ends of the arc-shaped elastic plate are slidably connected with the side support ears, and the bottom surface of the main wall is provided with a brick supporting plate abutting against the arc-shaped elastic plate.

[0025] Furthermore, both ends of the arc-shaped elastic plate are provided with sliding plates, and the side ears are provided with sliding grooves, and the sliding plates slide into the corresponding sliding grooves.

[0026] With the above technical solution, the design of the arc-shaped elastic plate enables it to better adapt to the shape and stress of the main wall and provide uniform support. When the main wall is subjected to pressure or temperature changes, the arc-shaped elastic plate can deform to a certain extent, thereby absorbing and dispersing these stresses, enhancing the stability of the entire structure and reducing damage to the main wall.

[0027] A method for primary dust removal during dry coke quenching, using the above-mentioned primary dust collector during dry coke quenching, comprises the following steps:

[0028] The smoke gas containing coke powder particles flowing out of the dry quenching furnace enters the shell through the air inlet. The dust-containing gas entering the shell hits the main wall and its flow rate decreases. Some dust particles in the smoke fall under the action of gravity and are discharged from the dust outlet. The decelerated airflow passes through the lower part of the main wall and is discharged from the air outlet.

[0029] By adopting the above technical solution, the large dust particles in the airflow are separated from the gas under the action of inertia through the above main wall, and quickly fall to the dust outlet for discharge under the action of gravity. The overall dust removal efficiency is improved through the stable main wall structure.

[0030] The beneficial effects of the present invention are as follows: by adopting a main wall formed by a left wall and a right wall, a telescopic mechanism between the left wall and the right wall can better adapt to the shape and stress conditions of the main wall in the horizontal direction, and in addition, an elastic brick support assembly arranged at the bottom of the main wall can better adapt to the shape and stress conditions of the main wall in the vertical direction, thereby improving the service life of the main wall as a whole, reducing the risk of collapse of the main wall, improving the service life of the dry quenching primary dust collector, reducing the downtime for maintenance caused by structural deformation or damage, and further improving the dust removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0032] Figure 1 This is a schematic diagram of the structure of the primary dust collector for dry coke quenching of the present invention;

[0033] Figure 2 It is a cross-sectional view of a primary dust collector for dry coke quenching of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the retaining wall in the present invention;

[0035] Figure 4 It is a schematic diagram of the partial structure of the retaining wall in the present invention after removing the arched wall;

[0036] Figure 5 for Figure 4 A partial enlarged view of the middle area A;

[0037] Figure 6 It is a top view cross-sectional view of the retaining wall in the present invention;

[0038] Figure 7 for Figure 6 A partial enlarged view of the middle area B;

[0039] Figure 8 It is a front cross-sectional view of the retaining wall in the present invention;

[0040] Fig. 9 for Figure 8 A partial enlarged view of area C in the middle.

[0041] Description of reference numerals:

[0042] 1. Shell; 11. Air inlet; 12. Air outlet; 13. Dust outlet; 2. Retaining wall; 21. Main wall; 211. Right wall; 212. Left wall; 213. Sealed cavity; 214. First U-shaped side steel plate; 215. Sealed vertical plate; 2151. Pillar; 2152. Air guide cover; 216. Brick support plate; 22. Arched wall; 3. Elastic brick support assembly; 31. Sealed horizontal plate; 32. Side support ears ; 321, slide groove; 33, arc elastic plate; 331, slide plate; 4, telescopic mechanism; 41, piston cylinder; 42, piston plate; 43, piston rod; 44, spring; 5, guide member; 51, cylindrical piston cylinder; 52, support shaft; 53, rotary piston plate; 54, fixed baffle; 55, first oil chamber; 56, second oil chamber; 57, first oil pipeline; 58, second oil pipeline; 59, scraper plate. DETAILED DESCRIPTION

[0043] 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. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0044] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0045] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0046] An embodiment of a primary dust collector for dry coke quenching provided by the present invention:

[0047] like Figures 1 to 9 As shown, a dry coke quenching primary dust collector includes a shell 1, on which an air inlet 11, an air outlet 12 and a dust outlet 13 are provided. A retaining wall 2 for assisting dust reduction is provided between the air inlet 11 and the air outlet 12. The retaining wall 2 includes a main wall 21 and an arched wall 22 provided above the main wall 21.

[0048] Specifically, in this embodiment, the main wall 21 and the arched wall 22 are made of high temperature resistant clay bricks.

[0049] The main wall 21 includes a left wall 212 and a right wall 211 that are spaced apart, and a sealed cavity 213 is formed between the left wall 212 and the right wall 211. Specifically, first U-shaped side steel plates 214 are provided on the opposite sides of the left wall 212 and the right wall 211, and sealing vertical plates 215 are slidably provided on the front and rear sides between the two first U-shaped side steel plates 214, and the sealed cavity 213 is formed between the two first U-shaped side steel plates 214 and the two sealing vertical plates 215.

[0050] A second U-shaped side steel plate is provided on the side surfaces of the left wall 212 and the right wall 211 opposite to the inner wall of the shell 1 , and the second U-shaped side steel plate is clamped in the side wall of the shell 1 .

[0051] A telescopic mechanism 4 is provided in the sealed cavity 213 to allow the left wall 212 and the right wall 211 to move relative to or in opposite directions.

[0052] The telescopic mechanism 4 includes a piston cylinder 41 fixed to one side of the sealed cavity 213, a piston plate 42 disposed in the piston cylinder 41, and a piston rod 43 with one end extending out of the piston cylinder 41. Here, the piston cylinder 41 is fixed to the first U-shaped side steel plate 214 on the left, and the end of the piston rod 43 extending out of the piston cylinder 41 is fixedly connected to the first U-shaped side steel plate 214 on the right, and a spring 44 is sleeved on the extended section of the piston rod 43. The piston plate 42 divides the interior of the piston cylinder 41 into a rodless cavity on the left and a rod cavity on the right.

[0053] When the left wall 212 and the right wall 211 move relative to or away from each other, they push the piston rod 43 to move. A guide member 5 is provided on one side of the piston cylinder 41 to guide the grease in the piston cylinder 41 from one side of the piston plate 42 to the other side of the piston plate 42.

[0054] During specific use, when the clay bricks constituting the main wall 21 expand laterally, they will push the first U-shaped side steel plate 214 between the left wall 212 and the right wall 211, thereby causing the piston rod 43 and the piston plate 42 to move to the left relative to the piston cylinder 41. Through the action of the guide member 5, the grease in the rodless chamber in the piston cylinder 41 is guided to the rod chamber to accommodate the relative movement between the piston rod 43 and the piston cylinder 41.

[0055] The addition of the spring 44 provides an additional buffering effect for the telescopic mechanism 4, which can absorb part of the impact force when the left wall 212 or the right wall 211 is deformed, reducing mechanical wear and noise. At the same time, the elasticity of the spring 44 can also help the left wall 212 or the right wall 211 to reach a new equilibrium state more quickly when the temperature changes.

[0056] In this embodiment, there are five piston rods 43 distributed vertically at intervals. Multiple piston rods 43 can disperse the stress and load when the left wall 212 or the right wall 211 is deformed, so that the pressure borne by each piston rod 43 is more uniform and reasonable, and the lateral deformation of the main wall 21 as a whole is more uniform.

[0057] In this embodiment, the guide member 5 includes a cylindrical piston cylinder 51 fixed on one of the sealing vertical plates 215, a support shaft 52 is rotatably provided in the cylindrical piston cylinder 51, a rotating piston plate 53 is provided on the support shaft 52, the free end of the rotating piston plate 53 abuts against the side wall of the cylindrical piston cylinder 51, and a fixed baffle 54 is also provided in the cylindrical piston cylinder 51.

[0058] A first oil chamber 55 and a second oil chamber 56 are respectively formed between the fixed baffle 54 and the rotary piston blade 53 . The first oil chamber 55 and the second oil chamber 56 are both communicated with the piston cylinder 41 .

[0059] The first oil chamber 55 and the second oil chamber 56 are provided with a first oil pipe 57 and a second oil pipe 58 respectively. The first oil pipe 57 is connected to the rodless chamber of the piston cylinder 41 , and the second oil pipe 58 is connected to the rod chamber of the piston cylinder 41 .

[0060] Specific as Figure 7 , 8 As shown in , 9, when the clay bricks constituting the main wall 21 expand laterally, the distance between the two first U-shaped side steel plates 214 becomes smaller, and the piston plate 42 moves to the left relative to the piston cylinder 41. The grease in the rodless chamber of the piston cylinder 41 is squeezed and enters the first oil chamber 55 through the first oil pipe 57. At this time, the grease above the rotating piston plate blade 53 increases, the rotating piston plate blade 53 rotates clockwise, and the grease in the second oil chamber 56 is squeezed into the rod chamber of the piston cylinder 41.

[0061] On the contrary, when the clay bricks of the main wall 21 cool and shrink, the distance between the two first U-shaped side steel plates 214 becomes larger, and the piston plate 42 moves to the right relative to the piston cylinder 41. The grease in the rod chamber of the piston cylinder 41 is squeezed and enters the second oil chamber 56 through the second oil pipe 58. At this time, the grease under the rotating piston plate blade 53 increases, and the rotating piston plate blade 53 rotates counterclockwise, and the grease in the first oil chamber 55 is squeezed into the rodless chamber of the piston cylinder 41.

[0062] In this embodiment, the cylindrical piston cylinder 51 is fixed on the sealing vertical plate 215 near the air inlet 11, and the end of the support shaft 52 away from the air outlet 12 extends out of the cylindrical piston cylinder 51 and passes through the corresponding sealing vertical plate 215. A dust scraper 59 is provided on the extended end of the support shaft 52.

[0063] During the rotation of the rotary piston blade 53 , the scraper plate 59 is driven to rotate, and the dust on the surface of the main wall 21 is scraped off by the scraper plate 59 to prevent the dust from sintering to form a hard layer and affecting the stability of the main wall 21 structure.

[0064] In this embodiment, a flow guide cover 2152 supported by pillars 2151 is provided on the sealing vertical plate 215 close to the air inlet 11 .

[0065] The arrangement of the air guide 2152 can effectively guide and disperse the high-temperature gas or airflow entering the air inlet 11, so that the main wall 21 is heated more evenly. This helps to reduce the thermal stress concentration and deformation caused by local high temperature, thereby protecting the structural integrity and stability of the main wall 21.

[0066] In addition, by evenly distributing the heat load and alleviating the impact force, the design of the air guide cover 2152 helps to reduce the damage to the main wall 21 caused by thermal stress and mechanical impact, thereby extending the overall service life of the dust collector.

[0067] In this embodiment, the bottom of the main wall 21 is supported by the elastic brick support assembly 3. The bottom end of the sealing vertical plate 215 is fixedly connected to the elastic brick support assembly 3, and the top end of the sealing vertical plate 215 is arc-shaped and abuts against the lower end surface of the arched wall 22.

[0068] Among them, the elastic brick supporting assembly 3 includes a sealing transverse plate 31 arranged on both sides of the bottom of the main wall 21, and both ends of the sealing transverse plate 31 are fixedly connected with side support ears 32, and the side support ears 32 are fixedly supported by the shell 1. An arc-shaped elastic plate 33 for supporting the main wall 21 is provided between the two sealing transverse plates 31, and both ends of the arc-shaped elastic plate 33 are slidably connected with the side support ears 32. The bottom surface of the main wall 21 is provided with a brick supporting plate 216 that abuts against the arc-shaped elastic plate 33.

[0069] Wherein, both ends of the arc-shaped elastic plate 33 are provided with a slide plate 331 , and the side ear 32 is provided with a slide groove 321 , and the slide plate 331 slides and extends into the corresponding slide groove 321 .

[0070] During specific use, the main wall 21 is supported by the arc-shaped elastic plate 33. When the clay bricks in the main wall 21 expand vertically due to heat, a downward thrust is generated on the arc-shaped elastic plate 33. At this time, the arc-shaped elastic plate 33 is squeezed downward, and the slides 331 at both ends of the arc-shaped elastic plate 33 slide outward in the slide groove 321 to adapt to the vertical deformation of the main wall 21. When the equipment stops using, the temperature of the main wall 21 drops, the main wall 21 shrinks, and the arc-shaped elastic plate 33 is reset. The design of the arc-shaped elastic plate 33 enables it to better adapt to the shape and stress conditions of the main wall 21 and provide uniform support. When the main wall 21 is subjected to pressure or temperature changes, the arc-shaped elastic plate 33 can deform to a certain extent, thereby absorbing and dispersing these stresses, enhancing the stability of the entire structure, and reducing damage to the main wall 21.

[0071] A method for primary dust removal during dry coke quenching, using the above-mentioned primary dust collector during dry coke quenching, comprises the following steps:

[0072] The smoke gas containing coke powder particles flowing out of the dry quenching furnace enters the shell 1 through the air inlet 11. The dust-containing gas entering the shell 1 decreases in velocity after hitting the main wall 21. Some dust particles in the smoke fall under the action of gravity and are discharged from the dust outlet 13. The decelerated airflow passes through the lower part of the main wall 21 and is discharged from the air outlet 12.

[0073] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0074] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A primary dust collector for dry coke quenching, comprising a shell, an air inlet, an air outlet and a dust outlet are arranged on the shell, and a retaining wall for assisting dust reduction is arranged between the air inlet and the air outlet, characterized in that: The retaining wall includes a main wall and an arched wall arranged above the main wall, and the bottom of the main wall is supported by an elastic supporting brick assembly; The main wall includes a left wall and a right wall that are spaced apart, a sealed cavity is formed between the left wall and the right wall, and a telescopic mechanism that allows the left wall and the right wall to move relative to or back to each other is provided in the sealed cavity; The telescopic mechanism includes a piston cylinder fixed to one side of the sealing chamber, a piston plate arranged in the piston cylinder, and a piston rod with one end extending out of the piston cylinder. When the left wall and the right wall move relative to or back to each other, the piston rod is pushed to move. A guide is provided on one side of the piston cylinder. The guide is used to guide the grease in the piston cylinder from one side of the piston plate to the other side of the piston plate. First U-shaped side steel plates are provided on opposite sides of the left wall and the right wall, and sealing vertical plates are slidably provided on the front and rear sides between the two first U-shaped side steel plates, and a sealing cavity is formed between the two first U-shaped side steel plates and the two sealing vertical plates; The bottom end of the sealing vertical plate is fixedly connected to the elastic brick supporting assembly, and the top end of the sealing vertical plate is arc-shaped and abuts against the lower end surface of the arched wall; The guide member comprises a cylindrical piston cylinder fixed on one of the sealing vertical plates, a fulcrum is rotatably arranged in the cylindrical piston cylinder, a rotary piston plate is arranged on the fulcrum, a free end of the rotary piston plate abuts against the side wall of the cylindrical piston cylinder, and a fixed baffle is arranged in the cylindrical piston cylinder; A first oil chamber and a second oil chamber are respectively formed between the fixed baffle and the rotating piston blade, and both the first oil chamber and the second oil chamber are connected to the piston cylinder; The cylindrical piston cylinder is fixed on a sealing vertical plate opposite to the air inlet, one end of the support shaft opposite to the air outlet extends out of the cylindrical piston cylinder and penetrates the corresponding sealing vertical plate, and a dust scraper is arranged on the extended end of the support shaft.

2. The CDQ primary dust collector according to claim 1, characterized in that: One end of the piston rod extending out of the piston cylinder is fixedly connected to the opposite first U-shaped side steel plate, and a spring is sleeved on the extending section of the piston rod.

3. The primary dust collector for dry coke quenching according to claim 2, characterized in that: The number of the piston rods is n and they are distributed vertically at intervals, wherein n≥2.

4. The primary dust collector for dry coke quenching according to claim 1, characterized in that: The first oil chamber and the second oil chamber are respectively provided with a first oil delivery pipe and a second oil delivery pipe. The first oil delivery pipe is communicated with the rodless chamber of the piston cylinder, and the second oil delivery pipe is communicated with the rod chamber of the piston cylinder.

5. The CDQ primary dust collector according to claim 1, characterized in that: A deflector supported by pillars is provided on the sealing vertical plate opposite to the air inlet.

6. The CDQ primary dust collector according to claim 1, characterized in that: The elastic brick supporting assembly comprises a sealing transverse plate arranged at both sides of the bottom of the main wall, both ends of the sealing transverse plate are fixedly connected with side ears, and the side ears are fixedly supported by the shell, and an arc-shaped elastic plate for supporting the main wall is arranged between the two sealing transverse plates, and both ends of the arc-shaped elastic plate are provided with a slide plate, and the side ears are provided with a slide groove, and the slide plate slides into the corresponding slide groove; The bottom surface of the main wall is provided with a brick supporting plate which abuts against the arc-shaped elastic plate.

7. A method for primary dust removal during dry quenching of coke, characterized in that: The dry coke quenching primary dust collector according to claim 1 comprises the following steps: The smoke gas containing coke powder particles flowing out of the dry quenching furnace enters the shell through the air inlet. The dust-containing gas entering the shell hits the main wall and its flow rate decreases. Some dust particles in the smoke fall under the action of gravity and are discharged from the dust outlet. The decelerated airflow passes through the lower part of the main wall and is discharged from the air outlet.

Images