Online ash removal device for central air chamber of dry quenching furnace

Abstract

An online ash removal device for a central air chamber of a dry quenching furnace comprises a dry quenching furnace body for dry quenching of coke and an ash removal device capable of realizing online ash removal of the central air chamber of the dry quenching furnace body, and the ash removal device is arranged on the outer side of the dry quenching furnace body and is characterized by comprising a dust removal header pipe, one end of the dust removal header pipe is connected to the environment dust removal pipeline, a header pipe ball valve is arranged on the dust removal header pipe, dust removal branch pipes are arranged on the inner side, close to the dry quenching furnace body, of the dust removal header pipe, and branch pipe ball valves are arranged on the dust removal branch pipes. The ash removal device has the beneficial effects that the ash removal device can realize on-line ash removal of the central air chamber of the dry quenching furnace, so that the circulating air volume of the central air chamber of the dry quenching furnace is increased, the coke discharge temperature is reduced, the coke powder content of the coke discharged by the dry quenching furnace is reduced, and the pressure of a primary dust remover and a secondary dust remover is reduced.

Description

Technical Field

[0001] The utility model relates to the field of coke dry quenching furnace equipment, and particularly relates to an on-line ash cleaning device for the central air chamber of a coke dry quenching furnace. Background Art

[0002] The gas supply device of the coke dry quenching furnace consists of air caps, cross air ducts, upper hoppers and lower hoppers. The circulating gas after passing through the feed water preheater enters the upper and lower air chambers of the gas supply device respectively through the manual adjustable shutter at the inlet of the coke dry quenching furnace. The upper air chamber supplies air through the peripheral annular gap, and the lower air chamber supplies air through the central air caps. The gas supply device of the coke dry quenching furnace is designed with three air chambers, namely the upper, middle and lower air chambers. The lower part is the central air chamber, the middle part is the lower peripheral air chamber, and the upper part is the upper peripheral air chamber. Refer to Figure 3 As shown, due to the distribution of coke in the coke dry quenching furnace, the two peripheral air ducts will cause the cooling air volume to be too concentrated on the outer side of the cooling section, resulting in a smaller air volume distributed to the coke with a higher temperature in the middle and a poorer cooling effect. To ensure uniform cooling of the coke, the upper peripheral air chamber of the coke dry quenching furnace is closed.

[0003] At present, the gas supply device of the coke dry quenching furnace is composed of a central air chamber and a lower peripheral air chamber. Due to its low position, coke powder is easily accumulated in the central air chamber, seriously affecting the air intake of the cross air duct, resulting in an increase in the resistance of the coke dry quenching circulation system, a decrease in the circulating air volume, and an impact on the cooling efficiency of the red-hot coke. In order to improve the situation that the production operation is affected by the ash accumulation in the central air chamber, an on-line ash cleaning device for the central air chamber of the coke dry quenching furnace is provided. Content of the Utility Model

[0004] The purpose of the utility model is to provide an on-line ash cleaning device for the central air chamber of a coke dry quenching furnace in view of the deficiencies and defects in the prior art. The ash cleaning device can realize on-line ash cleaning of the central air chamber of the coke dry quenching furnace, thereby increasing the circulating air volume of the central air chamber of the coke dry quenching furnace, reducing the coke discharging temperature, not only reducing the coke powder content in the coke discharged from the coke dry quenching furnace, but also reducing the pressure of the primary and secondary dust collectors.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: an on-line ash cleaning device for the central air chamber of a coke dry quenching furnace, which includes a coke dry quenching furnace body 1 for dry quenching of coke and an ash cleaning device 2 capable of realizing on-line ash cleaning of the central air chamber of the coke dry quenching furnace body 1. The ash cleaning device 2 is arranged on the outer side of the coke dry quenching furnace body 1, and is characterized in that: the ash cleaning device 2 includes a dust removal main pipe 23, one end of the dust removal main pipe 23 is connected to the environmental dust removal pipeline 21, and a main pipe ball valve 22 is arranged on the dust removal main pipe 23. A dust removal branch pipe 24 is arranged on the inner side of the dust removal main pipe 23 close to the coke dry quenching furnace body 1, and a branch pipe ball valve 25 is arranged on the dust removal branch pipe 24.

[0006] Furthermore, a coke dry quenching furnace inlet air pipe 101 is arranged on the coke dry quenching furnace body 1.

[0007] Further, there are three dust removal branch pipes 24, which are installed on the east side, north side and west side of the bottom of the coke dry quenching furnace body 1 at 90° intervals along the circumferential direction.

[0008] Further, the diameter of the dust removal branch pipe 24 is 150 mm.

[0009] Further, the diameter of the dust removal main pipe 23 is 300 mm.

[0010] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: The ash cleaning device can realize the on-line ash cleaning of the central gas chamber of the coke dry quenching furnace, thereby increasing the circulating air volume of the central gas chamber of the coke dry quenching furnace, reducing the coke discharging temperature, not only reducing the coke powder content in the coke discharged from the coke dry quenching furnace, but also reducing the pressures of the primary and secondary dust collectors. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a structural schematic diagram of the present utility model.

[0013] Figure 2 It is a structural schematic diagram of the ash cleaning device in the present utility model.

[0014] Figure 3 It is a structural schematic diagram of the prior art.

[0015] Description of the reference numerals: Coke dry quenching furnace body 1, Ash cleaning device 2, Coke dry quenching furnace inlet air pipe 101, Environmental dust removal pipeline 21, Main pipe ball valve 22, Dust removal main pipe 23, Dust removal branch pipe 24, Branch pipe ball valve 25. Detailed Embodiments

[0016] Refer to Figures 1 - 2 As shown, the technical solution adopted in this detailed embodiment is as follows: It includes a coke dry quenching furnace body 1 for dry quenching of coke and an ash cleaning device 2 that can realize on-line ash cleaning of the central gas chamber of the coke dry quenching furnace body 1. The ash cleaning device 2 is arranged outside the coke dry quenching furnace body 1. It is characterized in that: The ash cleaning device 2 includes a dust removal main pipe 23. One end of the dust removal main pipe 23 is connected to the environmental dust removal pipeline 21, and a main pipe ball valve 22 is arranged on the dust removal main pipe 23. A dust removal branch pipe 24 is arranged on the inner side of the dust removal main pipe 23 close to the coke dry quenching furnace body 1, and a branch pipe ball valve 25 is arranged on the dust removal branch pipe 24.

[0017] Further, a coke dry quenching furnace inlet air pipe 101 is arranged on the coke dry quenching furnace body 1.

[0018] Further, there are three dust removal branch pipes 24, which are installed on the east side, north side and west side at 90° intervals along the circumferential direction at the bottom of the coke dry quenching furnace body 1.

[0019] Further, the diameter of the dust removal branch pipe 24 is 150 mm.

[0020] Further, the diameter of the dust removal main pipe 23 is 300 mm.

[0021] The working principle of the present utility model: Three dust removal branch pipes 24 with a diameter of 150 mm and equipped with branch pipe ball valves 25 are respectively installed on the east side, north side and west side at 90° intervals along the circumferential direction at the bottom of the coke dry quenching furnace body 1, and the dust removal branch pipes 24 are merged into a dust removal main pipe 23 with a diameter of 300 mm arranged in a ring shape. The dust removal main pipe 23 is connected to the environmental dust removal pipeline 21 of the coke dry quenching system. During the maintenance period of the coke dry quenching system, the environmental dust removal fan is set to operate at a high frequency, and the branch pipe ball valves 25 are sequentially opened, and the online dust cleaning of the central gas chamber of the coke dry quenching furnace can be realized by using the dust removal branch pipes 24.

[0022] The above is only used to illustrate the technical solution of the present utility model and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model shall be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.

Claims

1. An online ash cleaning device for the central air chamber of a dry quenching furnace, characterized in that: It comprises a dry quenching furnace body (1) for dry quenching of coke and a cleaning device (2) capable of realizing online cleaning of the central air chamber of the dry quenching furnace body (1), wherein the cleaning device (2) is arranged on the outer side of the dry quenching furnace body (1), and is characterized in that: the cleaning device (2) comprises a dust removal main pipe (23), one end of the dust removal main pipe (23) is connected to an environmental dust removal pipeline (21), and a main pipe ball valve (22) is provided on the dust removal main pipe (23), and a dust removal branch pipe (24) is provided on the inner side of the dust removal main pipe (23) close to the dry quenching furnace body (1), and a branch pipe ball valve (25) is provided on the dust removal branch pipe (24).

2. The online ash cleaning device for the central air chamber of a dry quenching furnace according to claim 1 is characterized in that: The CDQ furnace body (1) is provided with a CDQ furnace inlet air duct (101).

3. The online ash cleaning device for the central air chamber of a dry quenching furnace according to claim 1 is characterized in that: The dust removal branch pipes (24) are provided in three pieces and are installed at the east side, the north side and the west side of the bottom of the dry quenching furnace body (1) at 90° along the circumferential direction.

4. The online ash cleaning device for the central air chamber of a dry quenching furnace according to claim 1 is characterized in that: The diameter of the dust removal branch pipe (24) is 150 mm.

5. The online ash cleaning device for the central air chamber of a dry quenching furnace according to claim 1 is characterized in that: The diameter of the dust removal main pipe (23) is 300 mm.

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