Boiler bottom ash removal equipment and dry quenching system

Abstract

The embodiment of the utility model provides boiler bottom ash removal equipment and a dry quenching system. The boiler bottom ash removal equipment comprises an ash discharge pipeline, a material distribution device and a suction device. The ash discharge pipeline comprises a pipeline ash inlet and a pipeline ash outlet; a first valve is arranged on the ash discharge pipeline; the material distributing device comprises a material distributing cavity, a first connector, a second connector and a third connector. The material distribution cavity is communicated with the external environment through the first interface; the second interface is communicated with the material distribution cavity and is connected with the pipeline ash outlet; the containing space of the suction device is communicated with the material distribution cavity through a third connector of the material distribution device. When the boiler bottom ash removal equipment is in a working state, the first valve is opened, the pipeline ash inlet communicates with the material distribution cavity of the material distribution device, the suction device is started, and gas in the material distribution cavity is driven to flow towards the containing space; when the boiler bottom ash removal equipment is in an idle state, the first valve is closed, the pipeline ash inlet and the material distribution cavity of the material distribution device are cut off, the suction device is closed, and therefore regular ash removal of the dry quenching boiler is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry quenching technology field especially relates to a boiler bottom ash removal equipment and dry quenching system. BACKGROUND

[0002] The dry quenching system includes a dry quenching boiler, and circulating gas flows in the dry quenching system and can carry dust, which can accumulate at the bottom of the dry quenching boiler. Dust accumulation reduces the circulating gas flow space and increases the resistance of circulating gas, affecting the efficiency of the system. In order to ensure the stable operation of the dry quenching system, the ash at the bottom of the dry quenching boiler needs to be cleaned regularly.

[0003] In related technologies, the ash at the bottom of the dry quenching boiler is cleaned manually, which is time-consuming and laborious and cannot achieve the purpose of regular cleaning. Ash will exist in the equipment, affecting system operation, and even causing the dry quenching system to be forced to shut down. Therefore, how to regularly clean the dry quenching boiler is a problem that needs to be solved by those skilled in the art. SUMMARY

[0004] The purpose of the embodiment of the utility model is to provide a boiler bottom ash removal equipment and dry quenching system to achieve regular cleaning of the dry quenching boiler. The specific technical scheme is as follows:

[0005] The embodiment of the first aspect of the application proposes a boiler bottom ash removal equipment, which includes an ash removal pipeline, a material distribution device, and a suction device. The ash removal pipeline includes a pipeline ash inlet and a pipeline ash outlet; the pipeline ash inlet is located above the pipeline ash outlet to enable dust to flow from the pipeline ash inlet to the pipeline ash outlet; a first valve is provided on the ash removal pipeline; the material distribution device includes a material distribution chamber, a first interface, a second interface, and a third interface; the material distribution chamber is in communication with the external environment through the first interface; the second interface is in communication with the material distribution chamber and connected to the pipeline ash outlet; the suction device has a containing space, which is in communication with the material distribution chamber through the third interface of the material distribution device; when the boiler bottom ash removal equipment is in a working state, the first valve is opened, the pipeline ash inlet is in communication with the material distribution chamber of the material distribution device, and the suction device is turned on to drive the gas in the material distribution chamber to flow to the containing space; when the boiler bottom ash removal equipment is in an idle state, the first valve is closed, the pipeline ash inlet is cut off from the material distribution chamber of the material distribution device, and the suction device is turned off.

[0006] In some embodiments of the application, a material distribution part is provided in the material distribution chamber of the material distribution device;

[0007] The distribution part extends from the inner wall of the distribution device to the middle position of the distribution cavity, and is at least partially located below the second interface and is spaced apart from the bottom wall of the distribution device.

[0008] In some embodiments of the present application, the ash discharge pipeline is located above the distribution device and extends in the vertical direction.

[0009] The ash discharge pipeline is tapered from the pipeline ash inlet to the pipeline ash outlet, and the area of the pipeline ash inlet is greater than that of the pipeline ash outlet.

[0010] In some embodiments of the present application, the distribution device and the suction device are connected through a connecting pipeline.

[0011] The connecting pipeline comprises a first pipeline and a second pipeline; the first pipeline is a hard pipe, the first end of the first pipeline is in communication with the third interface of the distribution device, and the second end of the first pipeline is in communication with the first end of the second pipeline; the second pipeline is a soft pipe, and the second end of the second pipeline is in communication with the inlet of the suction device.

[0012] In some embodiments of the present application, the distribution device comprises a main body part and a first air inlet pipe.

[0013] The main body part comprises the distribution cavity, the second interface and the third interface.

[0014] The first end of the first air inlet pipe is fixedly connected to the outer wall of the main body part and is located on the two sides of the second interface and on the lower side of the second interface in the horizontal direction and the vertical direction, respectively; the second end of the first air inlet pipe extends away from the main body part, and the second end of the first air inlet pipe forms the first interface.

[0015] A second valve is arranged on the first air inlet pipe.

[0016] In some embodiments of the present application, a second air inlet pipe is arranged on the first pipeline; the first end of the second air inlet pipe is in communication with the first pipeline, and the second end of the second air inlet pipe is in communication with the external environment.

[0017] A third valve is arranged on the second air inlet pipe.

[0018] In some embodiments of the present application, the first pipeline extends in the horizontal direction.

[0019] The first air inlet pipe comprises a first bending section, a horizontal section and a second bending section connected in sequence; a first end of the first bending section is fixedly connected with the side wall of the main body part, and a second end of the first bending section is connected with a first end of the horizontal section; the horizontal section extends from the first bending section in a horizontal direction away from the connecting pipe, and a second end of the horizontal section is connected with a first end of the second bending section; a second end of the second bending section is bent downward from the horizontal section;

[0020] The second valve is arranged on the horizontal section;

[0021] The second air inlet pipe is located above the first pipe and comprises a vertical section and a third bending section connected in sequence; a first end of the vertical section is fixedly connected with the outer wall of the first pipe, the vertical section extends upward from the outer wall of the first pipe in a vertical direction, and a second end of the vertical section is connected with a first end of the third bending section; a second end of the third bending section is bent from the vertical section to the side surface thereof;

[0022] The third valve is arranged on the vertical section.

[0023] In some embodiments of the present application, a flared section is formed at the second end of the second bending section, so that the area of the air inlet of the first air inlet pipe is greater than the area of the air outlet of the first air inlet pipe; the air inlet of the first air inlet pipe is the first interface;

[0024] A check valve is further arranged on the horizontal section; the check valve is located between the second valve and the first bending section;

[0025] A pipe clamp is arranged at the second end of the second pipe.

[0026] In some embodiments of the present application, the suction device is a suction and discharge tank truck.

[0027] Embodiments of the second aspect of the present application provide a dry quenching system, comprising a dry quenching boiler and the boiler bottom ash removal device of any one of the embodiments of the first aspect;

[0028] The dry quenching boiler is arranged above the boiler bottom ash removal device;

[0029] The bottom of the dry quenching boiler has a slope structure; the lowest point of the bottom of the dry quenching boiler is provided with an ash discharge port; the ash discharge port is connected with the pipe ash inlet of the ash discharge pipe.

[0030] Advantages:

[0031] The boiler bottom ash removal device provided by the embodiment of the present application comprises an ash removal pipeline, a material distribution device and a suction device. The ash removal pipeline comprises a pipeline ash inlet and a pipeline ash outlet, and a first valve is arranged on the ash removal pipeline. The first valve is used to control the communication and cutoff of the pipeline ash inlet and the pipeline ash outlet, so as to control whether the dust can flow out of the pipeline ash outlet. The material distribution device comprises a material distribution cavity, a first interface, a second interface and a third interface. The material distribution cavity is in communication with an external environment through the first interface, and the gas in the external environment can enter the material distribution cavity through the first interface. The second interface is in communication with the material distribution cavity and is connected with the pipeline ash outlet, so that the dust generated by the dry quenching coke oven connected with the pipeline ash inlet can enter the ash removal pipeline from the pipeline ash inlet, and then enter the material distribution cavity through the pipeline ash outlet and the second interface. The suction device has a containing space, and the containing space is in communication with the material distribution cavity through the third interface of the material distribution device. When the boiler bottom ash removal device is in a working state, the first valve is opened, the pipeline ash inlet is in communication with the material distribution cavity of the material distribution device, and the suction device is opened to drive the gas in the material distribution cavity to flow to the containing space. The gas in the external environment flows into the material distribution cavity through the first interface, and generates an air flow under the action of the suction device. The air flow drives the dust in the material distribution cavity to flow to the containing space of the suction device, and the dust in the dry quenching coke oven gradually enters the material distribution cavity and is carried into the suction device by the air flow, so that the ash removal is realized. After the ash removal is completed, the boiler bottom ash removal device is switched to an idle state. When the boiler bottom ash removal device is in the idle state, the first valve is closed, the pipeline ash inlet is cutoff from the material distribution cavity of the material distribution device, and the suction device is closed. The boiler bottom ash removal device provided by the embodiment of the present application can realize the periodic ash removal of the dry quenching coke oven, so as to ensure the stable operation of the dry quenching system, and compared with the manual ash removal method in the related art, the efficiency and safety are higher.

[0032] The dry quenching system of the embodiment of the application comprises the dry quenching boiler and the boiler bottom dust removal equipment of any one of the first aspect, the dry quenching boiler is arranged above the boiler bottom dust removal equipment, the bottom of the dry quenching boiler has a slope structure, the lowest point of the bottom of the dry quenching boiler is provided with a dust discharge port, and the dust discharge port is connected with a pipeline dust inlet of a dust discharge pipeline, so that the dust is facilitated to slide to the dust discharge port and then enters the dust discharge pipeline under the action of gravity. When the boiler bottom dust removal equipment is in a working state, the first valve is opened, the pipeline dust inlet is communicated with the distribution cavity of the distribution device, the suction device is opened, the gas in the distribution cavity is driven to flow to the containing space, the gas in the external environment flows into the distribution cavity through the first interface, and the airflow is generated under the action of the suction device, the airflow drives the dust in the distribution cavity to flow to the containing space of the suction device, and the dust in the dry quenching boiler gradually enters the distribution cavity and is blown into the suction device by the airflow, so that dust removal is realized. After the dust removal is completed, the boiler bottom dust removal equipment is switched to an idle state, when the boiler bottom dust removal equipment is in the idle state, the first valve is closed, the pipeline dust inlet is cut off from the distribution cavity of the distribution device, and the suction device is closed. The dry quenching system of the embodiment of the application can realize periodic dust removal of the dry quenching boiler, thereby reducing the circulating gas resistance in the dry quenching system, realizing stable operation of the dry quenching system, and compared with the manual dust removal mode in the related art, the efficiency and safety are higher, and the risk of personnel injury when manually entering the flue of the dry quenching boiler for dust removal is reduced.

[0033] Of course, it is not necessary for any product implementing the present application to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0035] Figure 1 It is a structure schematic view of the dry quenching system of the first embodiment of the application.

[0036] Figure 2 It is a structure schematic view of the dry quenching system of the second embodiment of the application.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] The boiler bottom ash removal device 10; the dry quenching boiler 20; the slope structure 21; the ash discharge port 22; the ash discharge pipeline 100; the pipeline ash inlet 110; the pipeline ash outlet 120; the first valve 130; the distribution device 200; the main body part 210; the distribution cavity 211; the second interface 212; the third interface 213; the distribution part 214; the first air inlet pipe 220; the air inlet of the first air inlet pipe 220a; the air outlet of the first air inlet pipe 220b; the first bending section 221; the horizontal section 222; the second valve 2221; the check valve 2222; the second bending section 223; the first interface 2231; the flared section 2232; the suction device 300; the tank body 310; the containing space 311; the pipeline system 320; the inlet 321; the connecting pipeline 400; the first pipeline 410; the second pipeline 420; the pipe clamp 421; the second air inlet pipe 500; the vertical section 510; the third valve 511; the third bending section 520; the flange 600. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art based on the present application belong to the scope of protection of the present application.

[0040] The dry quenching system includes a dry quenching boiler, and circulating gas flows in the dry quenching system and carries dust. The dust accumulates at the bottom of the dry quenching boiler. The accumulation of dust reduces the circulating gas flow space and increases the resistance of the circulating gas, thereby affecting the efficiency of the system. In order to ensure the stable operation of the dry quenching system, the ash at the bottom of the dry quenching boiler needs to be cleaned regularly. In the related art, the ash at the bottom of the dry quenching boiler is cleaned manually. This method is not only time-consuming and labor-intensive, but also cannot achieve the purpose of regular cleaning of the ash. The ash will exist in the equipment, affecting the operation of the system, and even causing the dry quenching system to be forced to shut down in severe cases. Therefore, how to regularly clean the dry quenching boiler is a problem that needs to be solved by those skilled in the art.

[0041] To solve the above technical problems, the present application provides a boiler bottom ash removal device and a dry quenching system.

[0042] As shown in the drawings, Figure 1 As shown in the drawings, Figure 1For the structural schematic diagram of the dry quenching system of the first embodiment of the application, the embodiment of the first aspect of the application proposes a boiler bottom dust cleaning device 10, which comprises a dust discharge pipeline 100, a material distribution device 200 and a suction device 300. The dust discharge pipeline 100 comprises a pipeline dust inlet 110 and a pipeline dust outlet 120; the pipeline dust inlet 110 is located above the pipeline dust outlet 120, so that the dust can flow from the pipeline dust inlet 110 to the pipeline dust outlet 120; the dust discharge pipeline 100 is provided with a first valve 130; the material distribution device 200 comprises a material distribution cavity 211, a first interface 2231, a second interface 212 and a third interface 213; the material distribution cavity 211 is in communication with the external environment through the first interface 2231; the second interface 212 is in communication with the material distribution cavity 211 and is connected with the pipeline dust outlet 120; the suction device 300 has a containing space 311, which is in communication with the material distribution cavity 211 through the third interface 213 of the material distribution device 200; when the boiler bottom dust cleaning device 10 is in a working state, the first valve 130 is opened, the pipeline dust inlet 110 is in communication with the material distribution cavity 211 of the material distribution device 200, and the suction device 300 is turned on to drive the gas in the material distribution cavity 211 to flow to the containing space 311; when the boiler bottom dust cleaning device 10 is in an idle state, the first valve 130 is closed, the pipeline dust inlet 110 is cut off from the material distribution cavity 211 of the material distribution device 200, and the suction device 300 is turned off.

[0043] The boiler bottom dust cleaning device 10 of the embodiment of the application comprises a dust discharge pipeline 100, a material distribution device 200 and a suction device 300. The dust discharge pipeline 100 comprises a pipeline dust inlet 110 and a pipeline dust outlet 120, and the dust discharge pipeline 100 is provided with a first valve 130, which is used to control the communication and cutoff of the pipeline dust inlet 110 and the pipeline dust outlet 120, so as to control whether the dust can flow out of the pipeline dust outlet 120; the material distribution device 200 comprises a material distribution cavity 211, a first interface 2231, a second interface 212 and a third interface 213; the material distribution cavity 211 is in communication with the external environment through the first interface 2231, and the gas in the external environment can enter the material distribution cavity 211 through the first interface 2231; the second interface 212 is in communication with the material distribution cavity 211 and is connected with the pipeline dust outlet 120, so that the dust generated by the dry quenching coke oven 20 connected with the pipeline dust inlet 110 can enter the dust discharge pipeline 100 from the pipeline dust inlet 110, and then enter the material distribution cavity 211 through the pipeline dust outlet 120 and the second interface 212; the suction device 300 has a containing space 311, which is in communication with the material distribution cavity 211 through the third interface 213 of the material distribution device 200.

[0044] When the boiler bottom ash removal device 10 is in the working state, the first valve 130 is opened, the pipeline ash inlet 110 is in communication with the distribution cavity 211 of the distribution device 200, and the suction device 300 is turned on to drive the gas in the distribution cavity 211 to flow to the containing space 311. The gas in the external environment flows into the distribution cavity 211 through the first interface 2231 and generates an air flow under the action of the suction device 300. The air flow drives the dust in the distribution cavity 211 to flow to the containing space 311 of the suction device 300, and the dust in the dry quenching coke oven 20 gradually enters the distribution cavity 211 and is driven by the air flow to the suction device 300, so that the ash removal is realized. After the ash removal is completed, the boiler bottom ash removal device 10 is switched to the idle state. When the boiler bottom ash removal device 10 is in the idle state, the first valve 130 is closed, the pipeline ash inlet 110 is cut off from the distribution cavity 211 of the distribution device 200, and the suction device 300 is turned off. The boiler bottom ash removal device 10 of the embodiment of the application can realize the periodic ash removal of the dry quenching coke oven 20, so as to ensure the stable operation of the dry quenching system, and compared with the manual ash removal mode in the related art, the efficiency and safety are higher.

[0045] In some embodiments of the application, as shown in Figure 1 The distribution cavity 211 of the distribution device 200 is provided with a distribution part 214. The distribution part 214 extends from the inner wall of the distribution device 200 to the middle position of the distribution cavity 211, and is at least partially located below the second interface 212 and is spaced apart from the bottom wall of the distribution device 200. During the ash removal process, the dust of the dry quenching coke oven 20 gradually enters the distribution cavity 211. By arranging the distribution part 214, when the dust enters the distribution device 200 from the ash removal pipeline 100, the dust in blocks is scattered into powder by the distribution part 214, so that the dust is more easily carried into the containing space 311 of the suction device 300 along with the air flow, and the ash removal efficiency is improved, and the dust is prevented from accumulating in the distribution cavity 211.

[0046] Optionally, as shown in Figure 1 The distribution part 214 can be a pipe-shaped structure extending in the horizontal direction, one end of which is fixedly connected with the side wall of the distribution device 200, and the other end is a free end. The cross section of the distribution part 214 is inclined from top to bottom, so as to facilitate the flow of dust. The extension direction of the distribution part 214 can be consistent with the gas flow direction of the distribution cavity 211, so as to reduce the influence on the air flow and improve the ash removal efficiency.

[0047] In some embodiments of the application, as shown in Figure 1As shown, the ash discharge pipeline 100 is located above the material distribution device 200 and extends in the vertical direction; the ash discharge pipeline 100 is tapered from the pipeline ash inlet 110 to the pipeline ash outlet 120, and the area of the pipeline ash inlet 110 is greater than that of the pipeline ash outlet 120. The ash discharge pipeline 100 is located above the material distribution device 200, and the dust can directly fall into the material distribution device 200 through the ash discharge pipeline 100 under the action of gravity, facilitating the flow of dust; the ash discharge pipeline 100 is tapered from the pipeline ash inlet 110 to the pipeline ash outlet 120, and the dust gradually converges in the process of entering the material distribution device 200 from the ash discharge pipeline 100, thereby facilitating the flow into the material distribution device 200.

[0048] In some embodiments of the present application, as shown in Figure 1 As shown, the material distribution device 200 and the suction device 300 are connected through the connecting pipeline 400; the connecting pipeline 400 includes a first pipeline 410 and a second pipeline 420; the first pipeline 410 is a hard pipe, the first end of the first pipeline 410 is in communication with the third interface 213 of the material distribution device 200, and the second end of the first pipeline 410 is in communication with the first end of the second pipeline 420; the second pipeline 420 is a flexible pipe, and the second end of the second pipeline 420 is in communication with the inlet 321 of the suction device 300. The first pipeline 410 is a hard pipe connected with the material distribution device 200, and its shape is fixed to facilitate the arrangement of the boiler bottom ash removal equipment 10; the second pipeline 420 is a flexible pipe connected with the suction device 300, and the shape of the flexible pipe can be changed, so that the suction device 300 can be arranged at different positions, and the arrangement is more flexible.

[0049] Optionally, the first pipeline 410 and the second pipeline 420 can be connected through the flange 600; the second interface 212 of the material distribution device 200 and the pipeline ash outlet 120 of the ash discharge pipeline 100, and the third interface 213 of the material distribution device 200 and the first end of the first pipeline 410, can also be connected through the flange 600, and the connection is more reliable by using the flange 600.

[0050] In some embodiments of the present application, as shown in Figure 1As shown, the material distribution device 200 comprises a main body 210 and a first air inlet pipe 220; the main body 210 comprises a material distribution cavity 211, a second interface 212 and a third interface 213; a first end of the first air inlet pipe 220 is fixedly connected with an outer wall of the main body 210 and is located on two sides of the second interface 212 in a horizontal direction and is located below the second interface 212 in a vertical direction; a second end of the first air inlet pipe 220 extends away from the main body 210, and the second end of the first air inlet pipe 220 is formed with a first interface 2231; the first air inlet pipe 220 is provided with a second valve 2221. In this way, the direction of the dust entering the material distribution cavity 211 from the second interface 212 is perpendicular or nearly perpendicular to the direction of the airflow in the material distribution cavity 211, which facilitates the transportation of the dust by the airflow and improves the dust removal efficiency. The first air inlet pipe 220 is provided, has a certain length, and functions to straighten the external airflow, so that a more uniform flow field is formed, which facilitates the removal of the dust; meanwhile, the second valve 2221 is provided on the first air inlet pipe 220, and the second valve 2221 can control the opening and closing of the first air inlet pipe 220, that is, can control whether the external environment is communicated with the material distribution cavity 211 of the material distribution device 200; when the second valve 2221 is closed, the dust in the material distribution device 200 can be prevented from overflowing, and at the same time, foreign matters in the external environment can be prevented from entering the material distribution device 200 through the first air inlet pipe 220.

[0051] In some embodiments of the present application, as shown in Figure 1 A second air inlet pipe 500 is provided on the first pipeline 410; a first end of the second air inlet pipe 500 is communicated with the first pipeline 410, and a second end of the second air inlet pipe 500 is communicated with the external environment; and a third valve 511 is provided on the second air inlet pipe 500. The second air inlet pipe 500 is arranged on the first pipeline 410 and is located between the third interface 213 of the material distribution device 200 and the suction device 300, functions to supplement the gas, and the gas in the external environment enters the first pipeline 410 through the second air inlet pipe 500, which can help to remove the dust in the first pipeline 410, reduce the residue and improve the dust removal efficiency.

[0052] Optionally, the first valve 130, the second valve 2221 and the third valve 511 can be solenoid valves.

[0053] In some embodiments of the present application, as shown in Figure 1As shown, the first pipeline 410 extends in a horizontal direction; the first air inlet pipe 220 comprises a first bent section 221, a horizontal section 222 and a second bent section 223 connected in sequence; a first end of the first bent section 221 is fixedly connected with a side wall of the main body 210, and a second end of the first bent section 221 is connected with a first end of the horizontal section 222; the horizontal section 222 extends from the first bent section 221 in a horizontal direction away from the connecting pipeline 400, and a second end of the horizontal section 222 is connected with a first end of the second bent section 223; a second end of the second bent section 223 is bent downward from the horizontal section 222; a second valve 2221 is arranged on the horizontal section 222; the second air inlet pipe 500 is located above the first pipeline 410 and comprises a vertical section 510 and a third bent section 520 connected in sequence; a first end of the vertical section 510 is fixedly connected with an outer wall of the first pipeline 410, the vertical section 510 extends upward from the outer wall of the first pipeline 410 in a vertical direction, and a second end of the vertical section 510 is connected with a first end of the third bent section 520; a second end of the third bent section 520 is bent from the vertical section 510 to a side surface thereof; a third valve 511 is arranged on the vertical section 510. The second bent section 223 and the third bent section 520 are designed to prevent foreign matters; the first pipeline 410 extends in a horizontal direction, and the first air inlet pipe 220 comprises the horizontal section 222, both of which extend in the same direction, facilitating the flow of gas; the first pipeline 410 and the second pipeline 420 are respectively located on two sides of the material distribution device 200, reducing mutual influence.

[0054] Optionally, the first bent section 221 can extend obliquely upward from the side wall of the main body 210, so as to reduce the amount of dust entering the first air inlet pipe 220.

[0055] In some embodiments of the present application, as shown in Figure 1 As shown, a second end of the second bent section 223 is formed with a flared section 2232, so that an area of an air inlet 220a of the first air inlet pipe is greater than an area of an air outlet 220b of the first air inlet pipe; the air inlet 220a of the first air inlet pipe is a first interface 2231; a check valve 2222 is further arranged on the horizontal section 222; the check valve 2222 is located between the second valve 2221 and the first bent section 221; a second end of the second pipeline 420 is provided with a pipe clamp 421. The flared section 2232 is arranged to facilitate the gas in the external environment to enter the first air inlet pipe 220; the check valve can prevent dust from overflowing from the first interface 2231.

[0056] In some embodiments of the present application, as shown in Figure 1As shown, the suction device 300 is a suction and discharge tank truck. The suction and discharge tank truck has the advantages of high efficiency and mobility. The suction and discharge tank truck can be parked at a designated location according to the demand, then the dust is cleaned, and after the cleaning is completed, the dust can be transported away, and the operation is flexible. The suction and discharge tank truck can include a chassis (not shown in the figure), a tank body 310, a pipeline system 320, and a pump (not shown in the figure). The chassis is a support structure of the suction and discharge tank truck, which ensures that the suction and discharge tank truck remains stable during transportation. The tank body 310 is used to store materials (dust, etc.), and the tank body 310 is usually made of special metal materials and can withstand a large pressure. The pipeline system 320 connects the suction and discharge tank truck with other equipment, which is responsible for the suction and discharge of materials, and the other equipment can be, for example, the material distribution device 200 in the embodiment of the present application. The pump is the core component of the suction and discharge tank truck, which is responsible for generating suction or pressure to drive the suction and discharge of materials.

[0057] As shown in Figure 1 The embodiment of the second aspect of the present application proposes a dry quenching system, which includes a dry quenching boiler 20 and the boiler bottom dust cleaning equipment 10 of any one of the embodiments of the first aspect; the dry quenching boiler 20 is arranged above the boiler bottom dust cleaning equipment 10; the bottom of the dry quenching boiler 20 has a slope structure 21; the lowest point of the bottom of the dry quenching boiler 20 is provided with a dust discharge port 22; the dust discharge port 22 is connected with the pipeline dust inlet 110 of the dust discharge pipeline 100.

[0058] The dry quenching boiler 20 has a flue gas inlet (not shown in the figure) and a flue gas outlet (not shown in the figure), and the flue gas flows from the flue gas inlet to the flue gas outlet. The flue gas flow direction can be referred to the direction indicated by the arrow; after the flue gas passes through the dry quenching boiler 20, the dust in the flue gas will accumulate at the bottom of the dry quenching boiler 20. Figure 1

[0059] ​The dry quenching system of an embodiment of the present application includes a dry quenching boiler 20 and a boiler bottom cleaning device 10 according to any embodiment of the first aspect; the dry quenching boiler 20 is arranged above the boiler bottom cleaning device 10; the bottom of the dry quenching boiler 20 has a slope structure 21; an ash discharge port 22 is provided at the lowest point of the bottom of the dry quenching boiler 20; the ash discharge port 22 is connected to the ash inlet 110 of the ash discharge pipe 100, so as to facilitate dust sliding toward the ash discharge port 22, thereby entering the ash discharge pipe 100 under the action of gravity. When the boiler bottom cleaning equipment 10 is in working state, the first valve 130 is opened, the pipeline ash inlet 110 is connected to the distribution chamber 211 of the distribution device 200, and the suction device 300 is turned on to drive the gas in the distribution chamber 211 to flow to the accommodation space 311, and the gas from the external environment flows into the distribution chamber 211 through the first interface 2231, and generates airflow under the action of the suction device 300. The airflow drives the dust entering the distribution chamber 211 from the ash discharge pipe 100 to flow to the accommodation space 311 of the suction device 300, and the dust in the dry quenching boiler 20 gradually enters the distribution chamber 211 and is replaced by the airflow into the suction device 300 to achieve cleaning; after cleaning is completed, the boiler bottom cleaning equipment 10 is switched to an idle state. When the boiler bottom cleaning equipment 10 is in an idle state, the first valve 130 is closed, the pipeline ash inlet 110 is cut off from the distribution chamber 211 of the distribution device 200, and the suction device 300 is closed. The CDQ system of the embodiment of the present application can achieve regular ash cleaning of the CDQ boiler 20, thereby reducing the resistance of the circulating gas in the CDQ system and achieving stable operation of the CDQ system. Compared with the manual ash cleaning method in the related art, the CDQ system is more efficient and safer, and reduces the risk of personal injury when manually entering the flue of the CDQ boiler 20 for ash cleaning.

[0060] Alternatively, as Figure 1 As shown, the dry quenching boiler 20 in the first embodiment of the present application has two slope structures 21 formed at its bottom. The two slope structures 21 are set at a certain angle, and the ash discharge port 22 is set near the flue gas outlet. When the flue gas flows through the dry quenching boiler 20, the dust away from the flue gas outlet will first fall on the slope structure 21 and then slide toward the ash discharge port; the dust near the flue gas outlet can directly fall near the ash discharge port 22 or directly fall into the ash discharge port 22, which is conducive to improving the dust collection efficiency.

[0061] Figure 1The working process of the dry quenching system is as follows: when the dust in the dry quenching boiler 20 reaches the preset dust accumulation amount, the suction device 300 is communicated with the third interface 213 of the distribution device 200 through the connecting pipeline 400; then the first valve 130, the second valve 2221, the third valve 511 and the suction device 300 are opened, the dust in the dry quenching boiler 20 is affected by gravity and suction force of the suction device 300 and falls into the distribution device 200 through the second interface 212 and the dust removal pipeline 100, the gas in the external environment enters the distribution device 200 through the first gas inlet pipe 220 and the first interface 2231, and the gas in the external environment enters the connecting pipeline 400 through the second gas inlet pipe 500, so as to form an airflow; the dust falling from the dust removal pipeline 100 is scattered in the distribution device 200 through the distribution part 214, so as to facilitate the dust to enter the containing space 311 of the suction device 300 along with the airflow. When the dust in the dry quenching boiler 20 is cleaned, the first valve 130 is closed, the suction device 300 continues to suck, and the dust in the distribution device 200 and the connecting pipeline 400 is cleaned, and after cleaning, the suction device 300, the second valve 2221 and the third valve 511 are closed, the suction device 300 and the connecting pipeline 400 are separated, and the suction device 300 can be a suction and discharge tank car, and the dust is transported away.

[0062] The dry quenching system of the second embodiment of the present application is different from the dry quenching system of the first embodiment of the present application in that the shape of the bottom of the dry quenching boiler 20 is different.

[0063] As shown in the drawings, Figure 2 The bottom of the dry quenching boiler 20 of the second embodiment of the present application includes three inclined slope structures 21 connected in sequence, and adjacent two inclined slope structures 21 are in V shape.

[0064] In some other embodiments of the present application, the bottom of the dry quenching boiler 20 can also be in conical shape, pyramid shape, etc., which is not limited in the present application.

[0065] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is included in the protection scope of the present application.

Claims

1. A boiler bottom cleaning device, characterized in that: include: An ash discharge pipe (100) comprises a pipe ash inlet (110) and a pipe ash outlet (120); the pipe ash inlet (110) is located above the pipe ash outlet (120) so that dust can flow from the pipe ash inlet (110) to the pipe ash outlet (120); a first valve (130) is provided on the ash discharge pipe (100); The material distribution device (200) comprises a material distribution chamber (211), a first interface (2231), a second interface (212), and a third interface (213); the material distribution chamber (211) is in communication with the external environment via the first interface (2231); the second interface (212) is in communication with the material distribution chamber (211) and is connected to the ash outlet (120) of the pipeline; The suction device (300) has a accommodating space (311), and the accommodating space (311) is communicated with the distribution chamber (211) through the third interface (213) of the distribution device (200); when the boiler bottom ash cleaning device is in a working state, the first valve (130) is opened, the pipeline ash inlet (110) is communicated with the distribution chamber (211) of the distribution device (200), and the suction device (300) is opened to drive the gas in the distribution chamber (211) to flow toward the accommodating space (311); when the boiler bottom ash cleaning device is in an idle state, the first valve (130) is closed, the pipeline ash inlet (110) is cut off from the distribution chamber (211) of the distribution device (200), and the suction device (300) is closed.

2. The boiler bottom cleaning equipment according to claim 1, characterized in that: A material distribution portion (214) is provided in the material distribution cavity (211) of the material distribution device (200); The material distribution portion (214) extends from the inner wall of the material distribution device (200) to the middle position of the material distribution cavity (211), and the material distribution portion (214) is at least partially located below the second interface (212) and is spaced apart from the bottom wall of the material distribution device (200).

3. The boiler bottom cleaning equipment according to claim 1, characterized in that: The ash discharge pipe (100) is located above the material distribution device (200) and extends in a vertical direction; The ash discharge pipe (100) is tapered from the pipe ash inlet (110) to the pipe ash outlet (120), and the area of ​​the pipe ash inlet (110) is larger than the area of ​​the pipe ash outlet (120).

4. The boiler bottom cleaning equipment according to any one of claims 1 to 3, characterized in that: The material distribution device (200) and the suction device (300) are connected via a connecting pipe (400); The connecting pipe (400) includes: a first pipe (410) and a second pipe (420); the first pipe (410) is a hard pipe, the first end of the first pipe (410) is connected to the third interface (213) of the material distribution device (200), and the second end of the first pipe (410) is connected to the first end of the second pipe (420); the second pipe (420) is a soft pipe, and the second end of the second pipe (420) is connected to the inlet (321) of the suction device (300).

5. The boiler bottom cleaning equipment according to claim 4, characterized in that: The material distribution device (200) comprises: a main body (210) and a first air inlet pipe (220); The main body (210) comprises the material distribution cavity (211), the second interface (212) and the third interface (213); The first end of the first air inlet pipe (220) is fixedly connected to the outer wall of the main body (210), and is located on both sides of the second interface (212) in the horizontal direction, and is located below the second interface (212) in the vertical direction, together with the third interface (213); the second end of the first air inlet pipe (220) extends in a direction away from the main body (210), and the first interface (2231) is formed on the second end of the first air inlet pipe (220); A second valve (2221) is provided on the first air inlet pipe (220).

6. The boiler bottom cleaning equipment according to claim 5, characterized in that: A second air intake pipe (500) is provided on the first pipe (410); a first end of the second air intake pipe (500) is in communication with the first pipe (410), and a second end of the second air intake pipe (500) is in communication with the external environment; A third valve (511) is provided on the second air inlet pipe (500).

7. The boiler bottom cleaning equipment according to claim 6, characterized in that: The first pipe (410) extends in a horizontal direction; The first air inlet pipe (220) comprises: a first bending section (221), a horizontal section (222), and a second bending section (223) connected in sequence; the first end of the first bending section (221) is fixedly connected to the side wall of the main body (210), and the second end of the first bending section (221) is connected to the first end of the horizontal section (222); the horizontal section (222) extends from the first bending section (221) in a horizontal direction away from the connecting pipe (400), and the second end of the horizontal section (222) is connected to the first end of the second bending section (223); the second end of the second bending section (223) is bent downward from the horizontal section (222); The second valve (2221) is arranged on the horizontal section (222); The second air inlet pipe (500) is located above the first pipe (410), and comprises: a vertical section (510) and a third bent section (520) connected in sequence; a first end of the vertical section (510) is fixedly connected to the outer wall of the first pipe (410); the vertical section (510) extends upward from the outer wall of the first pipe (410) in a vertical direction; a second end of the vertical section (510) is connected to the first end of the third bent section (520); and a second end of the third bent section (520) is bent from the vertical section (510) toward the side thereof; The third valve (511) is arranged on the vertical section (510).

8. The boiler bottom cleaning equipment according to claim 7, characterized in that: The second end of the second bending section (223) is formed with a flared section (2232) so that the area of ​​the air inlet (220a) of the first air inlet pipe is larger than the area of ​​the air outlet (220b) of the first air inlet pipe; the air inlet (220a) of the first air inlet pipe is the first interface (2231); A check valve (2222) is also provided on the horizontal section (222); the check valve (2222) is located between the second valve (2221) and the first bending section (221); A pipe clamp (421) is provided at the second end of the second pipe (420).

9. The boiler bottom cleaning equipment according to claim 1, characterized in that: The suction device (300) is a suction and discharge tank truck.

10. A dry quenching system, characterized in that: include: A dry quenching coke boiler (20) and a boiler bottom cleaning device according to any one of claims 1 to 9; The dry quenching boiler (20) is arranged above the boiler bottom ash cleaning equipment; The bottom of the dry quenching boiler (20) has a slope structure (21); an ash discharge port (22) is provided at the lowest point of the bottom of the dry quenching boiler (20); and the ash discharge port (22) is connected to the ash inlet (110) of the ash discharge pipe (100).

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