Coke dry quenching system capable of automatically purging coke foam

Abstract

The utility model provides a coke dry quenching system capable of automatically purging coke foam, which comprises a coke dry quenching car, and the coke dry quenching car comprises a locomotive, an air brake system and a coke tank trolley which is connected behind the locomotive and is driven by the locomotive; the coke tank trolley comprises a trolley frame body provided with driving wheels, a dry quenching tank is arranged on the trolley frame body, lifting supports are arranged on the two sides of the dry quenching tank, and a base is arranged at the bottom of the dry quenching tank; the air brake braking system comprises a brake pad arranged on the periphery of the driving wheel, a disc brake used for being matched with the brake pad for braking, an air path system used for controlling the disc brake to act and an air source used for providing power for the air path system. The gas path system is provided with a pneumatic electromagnetic valve for controlling brake gas pressure and a purging gas path facing the base. According to the utility model, automatic online cleaning of powder left at the bottom of the dry quenching tank is conveniently realized without stopping, and normal production is not influenced.

Description

Technical Field

[0001] The utility model relates to the field of coke dry quenching, and more specifically to a coke dry quenching system for automatically blowing off coke foam. Background Art

[0002] After the coal is made into coke in the carbonization chamber, the high-temperature coke needs to be pushed out of the carbonization chamber in time. The temperature when it is pushed out is about 1000℃. In order to avoid the burning of coke and facilitate transportation and storage, the coke cannot be directly sent to the blast furnace for ironmaking. The temperature must be lowered, so a coke quenching system is needed for quenching. One quenching method is to use water spray to reduce the temperature of red coke to below 300°C, which is commonly known as wet quenching. The traditional wet quenching system consists of a quenching tower with a water spraying device, a quenching pump room, a quenching water sedimentation tank and various pipes. The steam generated by quenching is directly discharged into the atmosphere. In contrast to the wet quenching process is the dry quenching process, which is a quenching process method that uses inert gas to cool the red coke. It is mainly composed of a dry quenching furnace, a loading device, a coke discharge device, a hoist, an electric locomotive and a coke tank trolley, a coke tank, a primary dust collector, a secondary dust collector, a dry quenching process boiler unit, a circulating fan, a dust removal ground station, a water treatment unit, an automatic control part and a power generation part.

[0003] The advantages of the CDQ process mainly include: avoiding corrosion to surrounding equipment and pollution to the atmosphere, easy control of dust pollution when the coke is discharged from the coke oven, placing the red coke in the coke quenching chamber, and recovering most of the heat for reuse, etc. However, there are still some deficiencies or flaws in the actual production process. For example, after the coke tank receives the red coke (i.e. coke that turns red due to high temperature), the gap at the bottom of the CDQ tank often leaks powder and accumulates on the base. Over time, the accumulation of coke foam becomes increasingly serious, which not only affects the balance of the coke tank, but also causes the gate at the bottom of the coke tank to not open properly.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a dry quenching system for automatically blowing out coke foam, which can conveniently realize automatic online cleaning of powder and foam missed at the bottom of the dry quenching tank without stopping the machine and affecting normal production.

[0006] To achieve the above purpose, the basic concept of the technical solution of the utility model is as follows:

[0007] A coke dry quenching system for automatically blowing off coke foam comprises a coke dry quenching car, the coke dry quenching car comprises a locomotive, an air brake system and a coke tank trolley connected to the rear of the locomotive and driven by the locomotive;

[0008] The coke tank trolley comprises a trolley frame provided with driving wheels, a dry coke quenching tank is arranged on the trolley frame, lifting brackets are arranged on both sides of the dry coke quenching tank, and a base is arranged at the bottom of the dry coke quenching tank;

[0009] The air brake system includes a brake pad arranged on the outer periphery of the driving wheel, a disc brake for braking in cooperation with the brake pad, an air circuit system for controlling the action of the disc brake and an air source for providing power to the air circuit system. The air circuit system is provided with a pneumatic solenoid valve for controlling the brake gas pressure and a purge air circuit toward the base.

[0010] As one method, the locomotive is provided with an operating room and an air tank connected to an air compressor; the air circuit system includes a pre-brake air pipe, a post-brake air pipe and a pneumatic solenoid valve arranged between the pre-brake air pipe and the post-brake air pipe, the pre-brake air pipe is connected to the air tank and extends to the coke tank trolley, and the outlet of the post-brake air pipe faces the base.

[0011] As a method, two or more branches are correspondingly arranged on the outer periphery of the base of the coke tank and the post-brake air pipes are respectively equipped with the pneumatic solenoid valves.

[0012] As one method, two or more coke tank trolleys are included, and the base of each coke tank trolley is respectively equipped with the post-brake air pipe.

[0013] As a method, a collection box for collecting coke foam is provided below the base and the purge gas path.

[0014] As one method, the base is a turntable structure with a diameter the same as that of the bottom of the dry coke quenching tank and a rotating shaft in the middle.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model provides a dry quenching system for automatically blowing out coke foam, which makes full use of the compressed air inside the brake system to blow out the platform at the bottom of the coke tank, and can automatically remove the spilled coke foam at any time, realize online automatic cleaning, keep the platform at the bottom of the coke tank clean, and avoid the problem of coke foam accumulation affecting the balance of the coke tank and causing the gate switch at the bottom of the coke tank to be out of place.

[0017] 2. The automatic coke foam blowing dry quenching system of the utility model has a simple structure, fully utilizes the structural characteristics of the existing system, has low transformation cost and strong flexibility in use.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0020] Figure 1 It is a partial structural schematic diagram of a coke dry quenching system for automatically blowing out coke foam shown in Example 1 of the utility model.

[0021] Marking Description:

[0022] 1-coke dry quenching car; 2-coke dry quenching tank; 3-base; 4-locomotive; 5-operating room; 6-brake pad; 7-air compressor; 8-air tank; 9-air pipe before brake; 10-pneumatic solenoid valve; 11-air pipe after brake; 12-driving wheel; 13-coke tank trolley. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] A coke dry quenching system with automatic coke foam purge, such as Figure 1 As shown, it includes a dry quenching coke car 1, wherein the dry quenching coke car 1 includes a locomotive 4, an air brake system and at least one coke tank trolley 13 connected to the rear of the locomotive 4 and driven by the locomotive 4;

[0026] The coke tank trolley 13 includes a trolley frame provided with a driving wheel 12, a dry coke quenching tank 2 is arranged on the trolley frame, lifting brackets are arranged on both sides of the dry coke quenching tank 2, and a base 3 is arranged at the bottom of the dry coke quenching tank 2;

[0027] The pneumatic brake system includes a brake pad 6 arranged on the periphery of a driving wheel 12, a disc brake for braking in cooperation with the brake pad 6, an air circuit system for controlling the operation of the disc brake, and an air source for providing power to the air circuit system. The air circuit system is provided with a pneumatic solenoid valve 10 for controlling the brake gas pressure.

[0028] The gas path system is provided with a purge gas path toward the base 3 of the dry coke quenching tank 2 .

[0029] The above-mentioned technical solution of the utility model, during the production process, when the dry coke quenching car 1 stops, the driving wheel 12 uses compressed air brakes, and after the dry coke quenching tank 2 is lifted, the brake gas is instantly released when the driving wheel 12 is running, and this part of the released gas is fully utilized to flush the coke foam at the bottom of the coke tank, without the need to set up additional complex cleaning devices, and fully utilizes the gas source, saving energy and reducing consumption, and being green and environmentally friendly. The utility model avoids the coke tank from being poorly sealed due to the gate switch at the bottom not being in place, which affects the use, and ensures that the coke tank remains balanced on the bottom turntable.

[0030] As a specific example, the locomotive 4 is provided with an operating room 5 and an air tank 8 connected to an air compressor 7, the air circuit system includes a pre-brake air pipe 9, a post-brake air pipe 11 and a pneumatic solenoid valve 10 arranged therebetween, the pre-brake air pipe 9 is connected to the air tank 8 and extends to the coke tank trolley 13, and the outlet of the post-brake air pipe 11 faces the base 3 of the coke tank.

[0031] The operation room 5 is equipped with a driver's operating platform, a coke tank rotation button, a lifting touch screen, a coke tank rotation monitor, a coke push interlock display and a compressed air pressure display. The driver can judge whether the air compressor is operating normally through the pressure display. The coke tank rotation monitor can be used to observe whether the coke tank rotates in place during the coking process. The operation screen is used for the driver to operate the coke tank delivery and lifting and receiving the empty tank.

[0032] As a further optimization solution, two or more branches are correspondingly arranged on the outer periphery of the base 3 of the coke drum and the post-brake air pipes 11 are respectively equipped with the pneumatic solenoid valves 10.

[0033] As an example, the base 3 is a turntable structure. The turntable structure is arranged at the bottom of the coke tank, and is a plate-shaped structure with the same diameter as the bottom of the coke tank, with a rotating shaft driven by a motor arranged in the middle. The main functions of this structure are to support the coke tank, rotate the coke tank, and make the red coke falling into the coke tank uniform. The control button of the turntable structure is arranged in the operating room, and the stop limit of the coke tank is also set.

[0034] As a further optimization solution, a collection box for collecting coke foam is provided below the base 3 and the purge gas path. The coke foam is purged into the collection box to avoid dust pollution to the environment.

[0035] As a further optimization scheme, in order to better adapt to the actual needs of production and improve work efficiency, at least two or more coke tank trolleys 13 connected in series are set up, each coke tank trolley 13 is provided with the coke tank, and the base 3 of the coke tank is provided with a purge air path, that is, the base 3 of each coke tank trolley 13 is respectively equipped with the post-brake air pipe 11.

[0036] The following is an introduction to the operating effect of this design:

[0037] Under normal circumstances, at least two coke ovens are in production. When the dry quenching coke car 1 includes two coke tanks, the 1# coke tank receives the coke from the No. 1 oven, and the 2# coke tank receives the coke from the No. 2 oven. During operation, after the dry quenching coke car 1 receives the coke from the No. 1 oven with the 1# coke tank, it is sent to the bottom of the elevator, and the dry quenching coke control room is contacted to lift the 1# coke tank to the top of the dry quenching oven with the elevator, and the coke is sent to the dry quenching oven.

[0038] During the lifting process of the 1# coke tank, the dry quenching coke car 1 uses the 2# coke tank to receive the coke from the 2# furnace. After receiving the coke from the 2# furnace, it goes to the bottom of the elevator to wait. After the 1# coke tank returns, the dry quenching coke car 1 first receives the 1# coke tank and places it on the base 3 of the dry quenching coke car 1, then moves the vehicle, brakes, and uses the elevator to send the 2# coke tank to the top of the dry quenching furnace. The dry quenching coke car 1 carries the 1# coke tank to receive the coke from the 1# furnace, and then moves under the elevator. After the 2# coke tank falls, the 2# coke tank is first placed on the trolley frame of the coke tank trolley 13, and the elevator then sends the 1# coke tank to the top of the dry quenching furnace. And so on, the two coke tanks are exchanged and lifted to meet the needs of efficient production.

[0039] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be based on the scope defined in the attached claims.

Claims

1. A coke dry quenching system for automatically blowing off coke foam, comprising a coke dry quenching vehicle (1), characterized in that: The dry coke quenching vehicle (1) comprises a locomotive (4), an air brake system, and a coke tank trolley (13) connected to the rear of the locomotive (4) and driven by the locomotive (4); The coke tank trolley (13) comprises a trolley frame provided with a driving wheel (12), a dry coke quenching tank (2) is arranged on the trolley frame, lifting brackets are arranged on both sides of the dry coke quenching tank (2), and a base (3) is arranged at the bottom of the dry coke quenching tank (2); The pneumatic brake system comprises a brake pad (6) arranged on the periphery of the driving wheel (12), a disc brake for braking in cooperation with the brake pad (6), an air circuit system for controlling the operation of the disc brake, and an air source for providing power to the air circuit system. The air circuit system is provided with a pneumatic solenoid valve (10) for controlling the brake gas pressure and a purge air circuit toward the base (3).

2. The automatic coke foam purge dry quenching system according to claim 1, characterized in that: The locomotive (4) is provided with an operating room (5) and an air tank (8) connected to an air compressor (7); the air circuit system comprises a front-brake air pipe (9), a rear-brake air pipe (11), and a pneumatic solenoid valve (10) arranged between the front-brake air pipe (9) and the rear-brake air pipe (11); the front-brake air pipe (9) is connected to the air tank (8) and extends to the coke tank trolley (13); and the outlet of the rear-brake air pipe (11) faces the base (3).

3. The automatic coke foam purge dry quenching system according to claim 2, characterized in that: The outer periphery of the base (3) of the coke tank is provided with two or more branches and the post-brake air pipes (11) are respectively equipped with the pneumatic solenoid valves (10).

4. The automatic coke foam purge dry quenching system according to claim 2 or 3, characterized in that: It comprises two or more coke tank trolleys (13), and the base (3) of each coke tank trolley (13) is respectively provided with the post-brake air pipe (11).

5. The automatic coke foam purge coke dry quenching system according to claim 1, characterized in that: A collection box for collecting coke foam is provided below the base (3) and the purge gas path.

6. The automatic coke foam purging dry quenching system according to claim 1, characterized in that: The base (3) is a turntable structure having the same diameter as the bottom of the dry coke quenching tank (2) and a rotating shaft in the middle.

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