Dry quenching dust removal system and dry quenching system

Abstract

The embodiment of the utility model provides a dry quenching dust removal system and a dry quenching system. The dry quenching dust removal system comprises a dust remover, a dust removal pipeline, a plurality of dust removal covers and a plurality of filter screens. The dust remover is provided with a first inlet; the dust removal pipeline is provided with a pipeline outlet and a plurality of pipeline inlets; the pipeline outlet is connected with the first inlet; the plurality of dust removal covers are communicated with the plurality of pipeline inlets in a one-to-one correspondence manner and are fixedly connected with the pipeline inlets; and each filter screen is fixedly arranged at the joint of one dust removal cover and one pipeline inlet and covers the pipeline inlet. According to the dry quenching dust removal system disclosed by the embodiment of the invention, after entering the dust removal cover, construction sundries can be blocked by the filter screen and cannot enter the dust removal pipeline, namely cannot enter the dust remover through the dust removal pipeline, so that the occurrence of the situation that the construction sundries block an ash outlet of the dust remover is reduced, and the overall stability of the dry quenching dust removal system is improved.

Description

Technical Field

[0001] This utility model relates to the field of coking technology, and in particular to a dry quenching dust removal system and a dry quenching system. Background Technology

[0002] Dry quenching (CDQ) has gradually replaced wet quenching and become the mainstream quenching technology. A lot of flue gas is generated during the dry quenching process, and a dry quenching dust removal system is usually used to treat the flue gas.

[0003] During the construction and early commissioning phases of a dry quenching system, construction debris will travel along the conveyor belt with the cooled coke. As it flows through various dust collection points, this debris enters the dust collection pipes, then the dust collector, and finally falls into the ash hopper. This debris can clog the dust collector's outlet, preventing dust from smoothly reaching the silo pump. Consequently, the dry quenching dust collection system cannot operate normally, requiring shutdown and maintenance. Therefore, minimizing the clogging of the dust collector's outlet by construction debris is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a dry quenching dust removal system and a dry quenching system to reduce the occurrence of construction debris clogging the dust collector's ash outlet. The specific technical solution is as follows:

[0005] An embodiment of the first aspect of this application provides a dry quenching coke dust removal system, which includes a dust collector, a dust removal pipeline, multiple dust removal hoods, and multiple filter screens. The dust collector has a first inlet; the dust removal pipeline has a pipeline outlet and multiple pipeline inlets; the pipeline outlet is connected to the first inlet; the multiple dust removal hoods are connected to each of the multiple pipeline inlets in a one-to-one manner, and the two are fixedly connected; each filter screen is fixedly installed at the connection point of one dust removal hood and one pipeline inlet, and covers the pipeline inlet.

[0006] In some embodiments of this application, the filter screen includes: a plurality of connecting ribs and a plurality of circular rings;

[0007] The plurality of circular rings are arranged concentrically and connected by the connecting ribs; the connecting ribs extend from the innermost circular ring along the radial direction of the circular ring to the outermost circular ring, forming a mesh structure.

[0008] In some embodiments of this application, the filter screen includes: a plurality of connecting ribs and a circular ring;

[0009] The multiple connecting ribs extend in the same direction and are spaced apart. The connecting ribs extend from one side of the circular ring to the opposite side to form a mesh structure.

[0010] In some embodiments of this application, the inlet of the dust removal pipe, the dust removal hood, and the filter screen are welded together.

[0011] In some embodiments of this application, the dust removal pipeline includes a main pipeline and multiple branch pipelines connected in series;

[0012] The pipeline outlet is located on the main pipeline;

[0013] The multiple pipe inlets are each correspondingly installed on the multiple branch pipes;

[0014] Each of the branch pipes is provided with a first valve for switching the branch pipe on and off.

[0015] In some embodiments of this application, the dust collector has a first outlet;

[0016] The dry quenching and dust removal system also includes:

[0017] The chimney is connected to the first outlet of the dust collector;

[0018] A dust removal fan is installed between the chimney and the first outlet of the dust collector to drive the flow of flue gas.

[0019] In some embodiments of this application, the dust collector further has a second inlet;

[0020] The dry quenching dust removal system further includes an air supply device; the air supply device is connected to the second inlet and is used to supply compressed air to the dust collector.

[0021] In some embodiments of this application, the dust collector also has a second outlet;

[0022] The dry quenching dust removal system further includes a pneumatic conveying system; the pneumatic conveying system is connected to the second outlet and is used to collect the dust separated from the flue gas by the dust collector.

[0023] In some embodiments of this application, the pneumatic conveying system includes: a silo, a humidifier, a pneumatic conveying pipeline, a silo pump, and an air intake device;

[0024] The ash inlet of the silo pump is connected to the second outlet of the dust collector; the air inlet of the silo pump is connected to the air inlet device; the ash outlet of the silo pump is connected to the ash inlet of the silo through the pneumatic conveying pipeline.

[0025] The air intake device is used to introduce gas into the silo pump, driving the dust in the silo pump to enter the silo through the pneumatic conveying pipe;

[0026] The ash outlet of the hopper is connected to the humidifier.

[0027] The second aspect of this application provides a dry quenching system, which includes a dry quenching furnace, multiple process belt conveyors, a coke storage bin, and a dry quenching dust removal system according to any embodiment of the first aspect.

[0028] The dry quenching furnace has a coke loading port at the top and a coke discharge port at the bottom;

[0029] The multiple process belt conveyors extend from the coke discharge port of the dry quenching furnace to the coke storage bin, and are used to transport the coke discharged from the coke discharge port to the coke storage bin;

[0030] The junction of two adjacent process belt conveyors with a vertical height difference forms a transfer station;

[0031] The coke discharge port of the dry quenching furnace and each of the transfer stations are equipped with at least one dust hood, which is positioned above the process belt conveyor.

[0032] Beneficial effects:

[0033] The dry quenching dust removal system of this application includes a dust collector, a dust collection pipeline, multiple dust collection hoods, and multiple filter screens. The dust collection pipeline has a pipeline outlet and multiple pipeline inlets, with the pipeline outlet connected to the first inlet of the dust collector. The multiple dust collection hoods are connected to the multiple pipeline inlets in a one-to-one correspondence, and the two are fixedly connected. Each filter screen is fixedly installed at the connection point between a dust collection hood and a pipeline inlet, covering the pipeline inlet. This ensures that construction debris entering the dust collection hood is blocked by the filter screen and cannot enter the dust collection pipeline, thus preventing it from entering the dust collector. This reduces the occurrence of construction debris clogging the dust collector's ash outlet, thereby improving the overall stability of the dry quenching dust removal system.

[0034] The dry quenching system of this application includes a dry quenching furnace, multiple process belt conveyors, a coke storage bin, and a dry quenching dust removal system according to any embodiment of the first aspect. The coke discharge port of the dry quenching furnace and each transfer station P are equipped with at least one dust removal hood, which can effectively remove dust from the dust removal points. Each filter screen is fixedly installed at the connection between a dust removal hood and a pipe inlet, and covers the pipe inlet. This ensures that construction debris entering the dust removal hood is blocked by the filter screen and cannot enter the dust removal pipe, thus preventing it from entering the dust collector. This reduces the occurrence of construction debris clogging the dust collector's ash outlet, thereby improving the overall stability of the dry quenching dust removal system and, consequently, the operational stability of the dry quenching system.

[0035] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0037] Figure 1 This is a schematic diagram of the dry quenching system according to an embodiment of this application;

[0038] Figure 2 for Figure 1 A magnified view of part A;

[0039] Figure 3 This is a diagram illustrating the installation of the filter screen;

[0040] Figure 4 for Figure 3 A bottom view;

[0041] Figure 5 This is a schematic diagram of the structure of the first type of filter screen in the embodiments of this application;

[0042] Figure 6 This is a schematic diagram of the structure of the second type of filter screen in the embodiments of this application;

[0043] Figure 7 This is a schematic diagram of the structure of the third type of filter screen in the embodiments of this application;

[0044] Figure 8 This is a schematic diagram of the structure of the fourth type of filter screen in the embodiments of this application;

[0045] Figure 9 This is a schematic diagram of the structure of the fifth type of filter screen in the embodiments of this application;

[0046] Figure 10 This is a schematic diagram of the structure of the sixth type of filter screen in the embodiments of this application;

[0047] Figure 11 for Figure 1 A magnified view of part B.

[0048] Explanation of reference numerals in the attached figures:

[0049] Dry quenching coke dust removal system 10; Dry quenching furnace 20; Coke charging port 21; Coke discharge port 22; Process belt conveyor 30; Connecting hood 31; Transfer station P; Dust collector 100; First inlet 110; First outlet 120; Second inlet 130; Second outlet 140; Second valve 150; Dust removal pipeline 200; Main pipeline 220; Branch pipeline 210; First valve 230; Dust hood 300; Filter screen 400; Connecting rib 410; Circular ring 420; Chimney 500; Dust removal fan 600; Piping section 610; Motor section 620; Connecting pipeline 700; Air supply device 800; Pneumatic conveying system 900; Silo 910; Humidifier 920; Pneumatic conveying pipeline 930; Silo pump 940; Air inlet device 950; Compressed air pipeline network 951; Compressed air storage tank 952. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application are within the protection scope of the present utility model.

[0051] Dry quenching (CDQ) has gradually replaced wet quenching as the mainstream quenching technology. The dry quenching process generates a significant amount of flue gas, which is typically treated using a dry quenching dust removal system. The treated flue gas mainly includes that generated during coke loading at the top of the dry quenching furnace, the flue gas released during pressure regulation in the pre-storage chamber at the top of the dry quenching furnace, the flue gas released after the circulating fan in the dry quenching furnace, the flue gas generated during coke discharge at the bottom of the dry quenching furnace, and the flue gas generated during coke transport at the coke transfer station.

[0052] During the construction and early commissioning phases of the dry quenching system, construction debris, such as 500ml and 1L beverage bottles, will travel along the conveyor belt with the cooled coke. As these debris flows through the dust collection points, it enters the dust collection pipes, then the dust collector, and finally falls into the ash hopper. This debris can clog the dust collector's ash outlet, preventing dust from flowing smoothly to the silo pump. Consequently, the dry quenching dust collection system cannot operate normally and requires shutdown and maintenance. Therefore, reducing the occurrence of construction debris clogging the dust collector's ash outlet is a problem that urgently needs to be solved by those skilled in the art.

[0053] To address the aforementioned technical problems, this application proposes a dry quenching dust removal system and a dry quenching system.

[0054] like Figures 1 to 4 As shown, Figure 1This is a schematic diagram of the dry quenching system according to an embodiment of this application. Figure 2 for Figure 1 A magnified view of part A. Figure 3 This is an installation diagram for filter 400. Figure 4 for Figure 3 The first aspect of this application discloses a dry quenching dust removal system 10, comprising a dust collector 100, a dust removal pipe 200, multiple dust collection hoods 300, and multiple filter screens 400. Specifically, the dust collector 100 has a first inlet 110; the dust removal pipe 200 has a pipe outlet and multiple pipe inlets; the pipe outlet is connected to the first inlet 110; the multiple dust collection hoods 300 are connected to the multiple pipe inlets in a one-to-one correspondence, and the two are fixedly connected; each filter screen 400 is fixedly disposed at the connection between a dust collection hood 300 and a pipe inlet, and covers the pipe inlet.

[0055] The dry quenching dust removal system 10 of this application embodiment includes a dust collector 100, a dust removal pipe 200, multiple dust collection hoods 300, and multiple filter screens 400. The dust removal pipe 200 has a pipe outlet and multiple pipe inlets, and the pipe outlet is connected to the first inlet 110 of the dust collector 100. The multiple dust collection hoods 300 are connected to the multiple pipe inlets one by one, and the two are fixedly connected. Each filter screen 400 is fixedly installed at the connection between a dust collection hood 300 and a pipe inlet, and covers the pipe inlet. This ensures that construction debris entering the dust collection hood 300 is blocked by the filter screen 400 and cannot enter the dust removal pipe 200, and therefore cannot enter the dust collector 100 through the dust removal pipe 200. This reduces the occurrence of construction debris clogging the ash outlet of the dust collector 100, thereby improving the overall stability of the dry quenching dust removal system 10.

[0056] In some embodiments of this application, such as Figures 5 to 7 As shown, Figure 5 This is a schematic diagram of the structure of the first type of filter screen 400 in the embodiments of this application. Figure 6 This is a schematic diagram of the structure of the second type of filter screen 400 in the embodiments of this application. Figure 7 This is a schematic diagram of the structure of the third type of filter screen 400 in this embodiment. The filter screen 400 includes multiple connecting ribs 410 and multiple circular rings 420. The multiple circular rings 420 are concentrically arranged and connected by the connecting ribs 410. The connecting ribs 410 extend from the innermost circular ring 420 along the radial direction of the circular rings 420 to the outermost circular ring 420, forming a mesh structure. The structure is simple, easy to process, and can effectively block construction debris.

[0057] Optionally, the ring filter 400 starts from the edge of the dust removal pipe 200 and decreases concentrically with a radius of 55mm, that is, the distance between two adjacent circular rings 420 is 55mm, and connecting ribs 410 (filter reinforcement bars) are provided at 0°, 90°, 180° and 270°. The regular shape makes it easy to process. Common construction debris is mainly 500ml and 1L beverage bottles. The diameter of 500ml beverage bottles is 60-66mm, and the size of 1L beverage bottles is 95×70mm. The gap of the filter 400 is less than 60mm, which can achieve a good effect of blocking construction debris. Moreover, the spacing between adjacent circular rings 420 and adjacent connecting ribs 410 is appropriate and will not generate large local resistance. Figure 5 In the embodiment shown, there are 3 circular rings 420, and the outermost circular ring 420 has a diameter of 426mm, which is suitable for a dust removal pipe 200 with a diameter of D426, where D represents the nominal diameter. Figure 6 In the embodiment shown, there are 6 circular rings 420, and the outermost circular ring 420 has a diameter of 630mm, which is suitable for the dust removal pipe 200 of D630. Figure 7 In the embodiment shown, there are 7 circular rings 420, and the outermost circular ring 420 has a diameter of 720mm, which is suitable for the dust removal pipe 200 of D720.

[0058] In some embodiments of this application, such as Figures 8 to 10 As shown, Figure 8 This is a schematic diagram of the structure of the fourth type of filter screen 400 in the embodiments of this application. Figure 9 This is a schematic diagram of the structure of the fifth type of filter screen 400 in the embodiments of this application. Figure 10 This is a schematic diagram of the sixth type of filter screen 400 in this application embodiment. The filter screen 400 includes multiple connecting ribs 410 and a circular ring 420. The multiple connecting ribs 410 extend in the same direction and are spaced apart. The connecting ribs 410 extend from one side of the circular ring 420 to the opposite side to form a mesh structure. The structure is simple, easy to process, and can effectively block construction debris.

[0059] Optionally, the strip filter 400 has connecting ribs 410 (filter reinforcement bars) arranged every 55mm on both sides from the center of the circle and through the diameter direction of 0° and 180°. That is, the distance between two adjacent connecting ribs 410 is 55mm. The connecting rib 410 in the middle passes through the center of the circular ring 420. The shape is regular and easy to process. The spacing between adjacent connecting ribs 410 is appropriate and will not generate large local resistance. The gap of the filter 400 is less than 60mm, which achieves a good effect of blocking construction debris. Figure 8 In the embodiment shown, the number of connecting ribs 410 is 7, and the diameter of the circular ring 420 is 426mm, which is suitable for the dust removal pipe 200 of D426. Figure 9In the embodiment shown, the number of connecting ribs 410 is 11, and the diameter of the circular ring 420 is 630mm, which is suitable for the dust removal pipe 200 of D630. Figure 10 In the embodiment shown, the number of connecting ribs 410 is 13, and the diameter of the circular ring 420 is 720mm, which is suitable for the dust removal pipe 200 of D720.

[0060] Dust collection pipes 200 of different specifications can use filter screens 400 of the same structure or filter screens 400 of different structures; this application does not limit this.

[0061] The two types of filter screens 400 mentioned above can effectively prevent construction debris from entering the bag filter 100, minimize the local resistance of the filter screen 400 in the dust removal pipeline 200, reduce the difficulty of construction, and do not affect the normal operation of the dry quenching dust removal system 10 in the later stage.

[0062] In some embodiments of this application, the dust collection duct 200, the dust collection hood 300, and the filter screen 400 are welded together. Welding is a highly reliable method, allowing the filter screen 400 to be fabricated on-site and welded to the duct inlet, thus ensuring a perfect fit between the filter screen 400 and the duct inlet.

[0063] In some embodiments of this application, reference is returned. Figure 1 and Figure 2 The dust collection duct 200 includes a main duct 220 and multiple branch ducts 210 connected together; the duct outlet is located on the main duct 220; multiple duct inlets are correspondingly located on the multiple branch ducts 210; each branch duct 210 is equipped with a first valve 230 for opening and closing the branch duct 210. The dust collection hood 300 is installed at multiple dust collection points, which are connected to different branch ducts 210, and then the flue gas is collected and sent to the main duct 220, and then introduced into the dust collector 100 through the main duct 220, which facilitates the layout of the dust collection duct 200.

[0064] In some embodiments of this application, such as Figure 1As shown, the dust collector 100 has a first outlet 120; the dry quenching coke dust removal system 10 also includes a chimney 500 and a dust removal fan 600, with the chimney 500 connected to the first outlet 120 of the dust collector 100; the dust removal fan 600 is located between the chimney 500 and the first outlet 120 of the dust collector 100, and is used to drive the flow of flue gas. The dust removal fan 600 drives the flue gas from the dust collection hood 300, through the filter screen 400 and the dust collection pipe 200, into the dust collector 100. The flue gas treated by the dust collector 100 flows towards the chimney 500 and is discharged under the drive of the dust removal fan 600. When the dust removal fan 600 is running, due to the action of the dust removal fan 600, each dust collection point is under negative pressure, and the lighter weight of the construction debris is sucked onto the filter screen 400; when the dust removal fan 600 stops running, the construction debris falls onto the conveyor belt due to gravity and is discharged with the cooled coke.

[0065] Optionally, the dust removal fan 600 can be a variable frequency fan. When calculating the air volume of the variable frequency fan, the local resistance of the filter screen 400 of the dust removal duct 200 can be taken into account, so as not to affect the continuous operation of the dry quenching dust removal system 10 in the later stage.

[0066] like Figure 1 As shown, the dust collector fan 600 may include a duct section 610 and a motor section 620; the duct section 610 of the dust collector fan 600 may be connected to the first outlet 120 of the dust collector 100 via a connecting pipe 700.

[0067] In some embodiments of this application, such as Figure 1 As shown, the dust collector 100 also has a second inlet 130; the dry quenching dust removal system 10 also includes an air supply device 800; the air supply device 800 is connected to the second inlet 130 and is used to supply compressed air to the dust collector 100; the compressed air blows up the dust in the dust collector 100 and makes it fall into the ash hopper.

[0068] Optionally, the dust collector 100 can be a bag filter, purifying the flue gas through a dust layer formed on the surface of the filter bags. After the flue gas enters the dust collector 100, coarse dust particles settle into the ash hopper (not shown in the figure) due to gravity and inertia, while fine dust particles enter the filter chamber (not shown in the figure) and are trapped inside the filter bags by the inertia, diffusion, blocking, hooking, and electrostatic effects of the filter media. The purified gas is discharged to the chimney 500 through the first outlet 120. The dust on the filter bags is removed by compressed air jets. Optionally, the air supply device 800 can be a compressed air storage tank.

[0069] In some embodiments of this application, such as Figure 1As shown, the dust collector 100 also has a second outlet 140; the dry quenching dust removal system 10 also includes a pneumatic conveying system 900; the pneumatic conveying system 900 is connected to the second outlet 140 and is used to collect the dust separated from the flue gas by the dust collector 100. The dust filtered by the dust collector 100 enters the pneumatic conveying system 900 and is transported by the pneumatic conveying system 900. The second outlet 140 can be located at the bottom of the dust collector 100, and the dust falls naturally into the lower part of the dust collector 100 under the action of gravity and enters the pneumatic conveying system 900. A second valve 150 can be provided at the second outlet 140 of the dust collector 100; the first valve 230 and the second valve 150 can be solenoid valves.

[0070] In some embodiments of this application, such as Figure 11 As shown, Figure 11 for Figure 1 The enlarged schematic diagram at point B shows that the pneumatic conveying system 900 includes a hopper 910, a humidifier 920, a pneumatic conveying pipeline 930, a hopper pump 940, and an air intake device 950. The ash inlet of the hopper pump 940 is connected to the second outlet 140 of the dust collector 100; the air inlet of the hopper pump 940 is connected to the air intake device 950; the ash outlet of the hopper pump 940 is connected to the ash inlet of the hopper 910 via the pneumatic conveying pipeline 930; the air intake device 950 is used to introduce gas into the hopper pump 940, driving the dust inside the hopper pump 940 to enter the hopper 910 through the pneumatic conveying pipeline 930; the ash outlet of the hopper 910 is connected to the humidifier 920. The hopper pump 940 and the hopper 910 are used to store dust; the humidifier 920 can humidify the dust, reducing dust generation, and the dust is transported away by placing a dump truck at the outlet of the humidifier 920.

[0071] Optionally, the air intake device 950 may include a compressed air network 951, in which compressed air is introduced into the chamber pump 940 via a compressed air storage tank 952, thereby providing more stable compressed air.

[0072] The dry quenching dust removal system 10 of this application embodiment can effectively prevent construction debris from being sucked into the bag filter 100 during trial operation and the initial stage of cold coke discharge, and prevent the second outlet 140 of the dust collector 100 and the pneumatic conveying pipeline 930 from being blocked by construction debris, thereby improving the operating efficiency of the dry quenching dust removal system 10.

[0073] like Figure 1 and Figure 2As shown, an embodiment of the second aspect of this application proposes a dry quenching coke system, including a dry quenching furnace 20, a plurality of process belt conveyors 30, a coke storage bin (not shown in the figure), and a dry quenching dust removal system 10 according to any embodiment of the first aspect; the dry quenching furnace 20 has a coke loading port 21 at the top and a coke discharge port 22 at the bottom; the plurality of process belt conveyors 30 extend from the coke discharge port 22 of the dry quenching furnace 20 to the coke storage bin, for transporting the coke discharged from the coke discharge port 22 to the coke storage bin; the junction of two adjacent process belt conveyors 30 with a height difference in the vertical direction forms a transfer station P; the coke discharge port 22 of the dry quenching furnace 20 and each transfer station P are provided with at least one dust removal hood 300, which covers the process belt conveyors 30.

[0074] The dry quenching system of this application includes a dry quenching furnace 20, multiple process belt conveyors 30, a coke storage bin, and a dry quenching dust removal system 10 according to any embodiment of the first aspect. The coke discharge port 22 of the dry quenching furnace 20 and each transfer station P are equipped with at least one dust removal hood 300, which can effectively remove dust from the dust removal point. Each filter screen 400 is fixedly installed at the connection between a dust removal hood 300 and a pipe inlet, and covers the pipe inlet. This ensures that construction debris entering the dust removal hood 300 is blocked by the filter screen 400 and cannot enter the dust removal pipe 200, and therefore cannot enter the dust collector 100 through the dust removal pipe 200. This reduces the occurrence of construction debris clogging the ash outlet of the dust collector 100, thereby improving the overall stability of the dry quenching dust removal system 10 and the operational stability of the dry quenching system.

[0075] like Figure 2 As shown, each process belt conveyor 30 can be equipped with a connecting cover 31 through which coke can pass. A dust removal cover 300 can be installed on top of the connecting cover 31, and the two are fixedly connected. The connecting cover 31 has a certain degree of sealing, which can reduce delayed overflow and thus achieve a better dust removal effect.

[0076] Optionally, the process belt conveyor 30 can be a conveyor belt, with two drive belts set at a certain angle to achieve turning, and the two conveyor belts having a certain height difference.

[0077] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A dry quenching dedusting system, characterized in that, The dry quenching dedusting system comprises: a dust collector (100) having a first inlet (110); a dedusting duct (200) having a duct outlet and a plurality of duct inlets; the duct outlet is connected with the first inlet (110); a plurality of dust covers (300) are in communication with the plurality of duct inlets one by one and are fixedly connected with the duct inlets; a plurality of filter screens (400) are fixedly arranged at the connection between one dust cover (300) and one duct inlet and cover the duct inlet.

2. The dry quenching dedusting system according to claim 1, wherein the filter screen (400) comprises a plurality of webs (410) and a plurality of circular ring bodies (420); the plurality of circular ring bodies (420) are concentrically arranged and connected by the webs (410); the webs (410) extend from the innermost circular ring body (420) to the outermost circular ring body (420) along the radial direction of the circular ring bodies (420) to form a mesh structure.

3. The dry quenching dedusting system according to claim 1, wherein the filter screen (400) comprises a plurality of webs (410) and one circular ring body (420); the plurality of webs (410) extend in the same direction and are arranged at intervals; the webs (410) extend from one side of the circular ring body (420) to the opposite side to form a mesh structure.

4. The dry quenching dedusting system according to claim 1, characterized in that, the duct inlets of the dedusting duct (200), the dust covers (300) and the filter screens (400) are welded and fixed together.

5. The dry quenching dedusting system according to claim 1, characterized in that, the dedusting duct (200) comprises a main duct (220) and a plurality of branch ducts (210) in communication; the duct outlet is arranged on the main duct (220); the plurality of duct inlets are arranged on the plurality of branch ducts (210) one by one; each branch duct (210) is provided with a first valve (230) for opening and closing the branch duct (210).

6. The dry quenching dedusting system according to claim 1, wherein the dust collector (100) has a first outlet (120); the dry quenching dedusting system further comprises: a chimney (500) in communication with the first outlet (120) of the dust collector (100); a dedusting fan (600) arranged between the chimney (500) and the first outlet (120) of the dust collector (100) for driving the flow of flue gas.

7. The dry quenching dedusting system according to claim 6, wherein the dust collector (100) further has a second inlet (130); the dry quenching dedusting system further comprises: an air supply device (800); the air supply device (800) is connected with the second inlet (130) for supplying compressed air into the dust collector (100).

8. The dry quenching dedusting system according to any one of claims 1 to 7, wherein the dust collector (100) further has a second outlet (140); The dry quenching dedusting system further comprises a pneumatic conveying system (900) connected with the second outlet (140) for collecting the dust separated from the flue gas by the dust collector (100).

9. The dry quenching dedusting system according to claim 8, characterized in that, The pneumatic conveying system (900) comprises a bin (910), a humidifier (920), a pneumatic conveying pipeline (930), a bin pump (940) and an air inlet device (950). The dust inlet of the bin pump (940) is connected with the second outlet (140) of the dust collector (100), the air inlet of the bin pump (940) is connected with the air inlet device (950), and the dust outlet of the bin pump (940) is connected with the dust inlet of the bin (910) through the pneumatic conveying pipeline (930). The air inlet device (950) is used for introducing gas into the bin pump (940) to drive the dust in the bin pump (940) to enter the bin (910) through the pneumatic conveying pipeline (930). The dust outlet of the bin (910) is connected with the humidifier (920).

10. A dry quenching system, characterized in that, It comprises: a dry quenching furnace (20), a plurality of process belt conveyors (30), a coke storage bin and the dry quenching dedusting system according to any one of claims 1 to 9; the dry quenching furnace (20) has a coke loading port (21) at the top and a coke discharge port (22) at the bottom; the plurality of process belt conveyors (30) extend from the coke discharge port (22) of the dry quenching furnace (20) to the coke storage bin for transporting the coke discharged from the coke discharge port (22) to the coke storage bin; the junction of two adjacent process belt conveyors (30) having a height difference in the vertical direction forms a transfer station (P); the coke discharge port (22) of the dry quenching furnace (20) and each transfer station (P) are provided with at least one dust hood (300) covering the process belt conveyor (30) from above.

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