Dry quenching one-time dust removal retaining wall

Abstract

The utility model discloses a dry quenching one-time dust removal retaining wall, which belongs to the technical field of metallurgy and comprises an arch brick layer and a standard brick layer, the arch brick layer is of a multi-layer arch structure formed by stacking a plurality of bricks, and the standard brick layer is positioned at the top of the arch brick layer. On the premise that the original design structure of the lower arch brick layer is not changed, the original retaining wall can be detached to the iron plate, and the combined brick is used for perfect replacement. The original one-time dust removal retaining wall is improved, each layer of arch of the arch brick layer is independently designed, even if the bottommost layer of arch bricks is damaged and falls off, the second layer of arch bricks can still support the whole retaining wall, the situation that the arch bricks fall off continuously cannot occur, and the structure of the retaining wall is greatly enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgy, in particular to a dry coke quenching primary dust removal retaining wall. Background Art

[0002] The kiln structure of the CDQ device is mainly divided into two parts, the CDQ furnace body and the primary dust collector. In the earlier designed CDQ, the primary dust collector generally adopts the retaining wall type gravity dust removal. After a long time, the retaining wall is affected by the scouring of coke powder, the impact of circulating air volume and its own thermal expansion. After 1 to 3 years of use, the traditional retaining wall frequently has refractory bricks falling off, resulting in the blockage of the water cooling sleeve, and the furnace has to be stopped for cleaning or repair, which seriously limits the CDQ capacity.

[0003] Compared with the retaining wall, the refractory structure stability of other parts of the primary dust collector is much better. The side walls and low walls can be almost maintenance-free for life. The shortcoming that limits the long-term stable operation of the CDQ system is the retaining wall. In order to increase the life of the retaining wall, reduce the maintenance frequency or even achieve maintenance-free, it is urgent to improve the existing retaining wall.

[0004] The utility model patent with publication number CN203333580U discloses a primary dust removal retaining wall, which is characterized by being composed of a dust removal air duct and a dust buffer bin, and a dust removal retaining wall with an arched or vertical wall surface is arranged on the top of the dust removal air duct. The utility model is also characterized in that the arch of the arched dust removal retaining wall faces the dry quenching chamber side to decompose the positive pressure on the dry quenching chamber side, and the two corners of the arched dust removal retaining wall are arranged in the two side walls of the primary dust removal air duct to strengthen the strength of the middle retaining wall. The patent did not modify the brick type, but only adjusted the curvature of the retaining wall, and the structural strength was not significantly improved. Utility Model Content

[0005] The utility model aims to provide a primary dust removal retaining wall for dry coke quenching to solve the above problems in the prior art.

[0006] Provided is a primary dust removal retaining wall for dry coke quenching, comprising:

[0007] An arch brick layer, wherein the arch brick layer is a multi-layer arch structure formed by stacking a plurality of bricks;

[0008] A standard brick layer is located on top of the arch brick layer.

[0009] As a further solution of the utility model: the arch brick layer includes a plurality of standard arching layers, a vault brick layer and a combined leveling brick layer which are sequentially arranged from bottom to top.

[0010] As a further solution of the utility model: the standard arched layer includes bottom bricks, arched bricks and multiple combined vaulted bricks arranged in sequence from both ends to the middle, and the bottom bricks in the upper standard arched layer are laid on top of the arched bricks in the lower standard arched layer.

[0011] As a further solution of the utility model: the tops of the bricks used for building the vault brick layer are parallel to the horizontal plane.

[0012] As a further solution of the utility model: the bricks used for building the arch brick layer are mullite bricks.

[0013] As a further solution of the utility model: the bricks used for building the standard brick layer are clay bricks.

[0014] As a further solution of the utility model: the arch brick layer and the standard brick layer can slide relative to each other.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] Improve the original dust removal retaining wall. Each arch of the arch brick layer is designed independently. Even if the bottom arch brick is damaged and falls off, the second layer can still support the entire retaining wall without further falling off, which greatly strengthens its structure. The bottom combination brick is designed according to the size of the original retaining wall, so it can be perfectly replaced without changing anything else. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of a primary dust removal retaining wall for dry coke quenching;

[0019] Figure 2 A schematic structural diagram of an arch brick layer provided in an embodiment of the utility model.

[0020] In the figure: 1. arch brick layer; 11. standard arch layer; 111. bottom brick; 112. arch brick; 113. combined vault brick; 12. vault brick layer; 13. combined leveling brick layer; 2. standard brick layer. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-2 As shown, in the embodiment of the utility model, a dry quenching dust removal retaining wall comprises an arch brick layer 1 and a standard brick layer 2. The arch brick layer 1 is a multi-layer arch structure formed by stacking multiple bricks, and the standard brick layer 2 is located on the top of the arch brick layer 1. Each layer of the arch brick layer 1 is independently designed, and each layer is only overlapped and masonry by arch foot bricks. As long as the arch foot bricks are not damaged, even if the first layer of bricks below falls off, the second layer can still support the entire arch.

[0024] The arch brick layer 1 is mainly made of bricks made of mullite, while the standard brick layer 2 is mainly made of standard clay bricks, which can effectively remove the large particles of coke powder in the circulating gas in the primary dust removal. The arch brick layer 1 uses mullite bricks. Compared with clay bricks, mullite bricks have more advantages in thermal shock stability, high temperature strength, wear resistance, etc., and can be used for a longer time. The standard brick layer 2 still uses dense clay bricks. Since the standard brick layer 2 is not the main load-bearing structure, the use of clay bricks can reduce weight and reduce costs.

[0025] The arch brick layer 1 includes a plurality of standard arching layers 11, a vault brick layer 12 and a combined leveling brick layer 13 arranged in sequence from bottom to top. The standard arching layer 11 is the main bearing structure, forming a standard arch structure and arranged in layers. When the bricks of the standard arching layer 11 of the bottom layer fall off, the standard arching layer 11 of the upper layer can still continue to operate. The vault brick layer 12 serves as a structural transition between the standard arching layer 11 and the combined leveling brick layer 13, so that the standard arching layer 11 and the combined leveling brick layer 13 are tightly combined, and provides a bottom foundation for the combined leveling brick layer 13 to be leveled. The combined leveling brick layer 13 plays a leveling role and contacts with the standard transfer layer 2.

[0026] Furthermore, the standard arched layer 11 includes a base brick 111, an arched brick 112, and a plurality of combined vaulted bricks 113 arranged in sequence from both ends to the middle. The bottom surface of the base brick 111 and the top surface of the arched brick 112 are parallel to the horizontal plane. The base brick 111 in the upper standard arched layer 11 is built on the top of the arched brick 112 in the lower standard arched layer 11. After overlapping, it can bear vertical force and play a supporting role. The side of the arched brick 112 is an inclined surface, and the combined vaulted brick 113 overlaps on the inclined surface to control the curvature of the arch. The top surface of the base brick 111 and the bottom surface of the arched brick 112 are connected by the inclined surface, and the thrust of the combined vaulted brick 113 can be transmitted to the base brick 111 through the arched brick 112, and converted into the pressure of the base brick 111.

[0027] The tops of the bricks used to build the vault brick layer 12 are parallel to the horizontal plane, which facilitates the combination of the leveling brick layer 13 for leveling and makes the load transferred by the standard brick layer 2 evenly distributed on the standard arching layer 11 to avoid concentrated loads.

[0028] The arch brick layer 1 and the standard brick layer 2 can slide relative to each other and are set as a sliding layer, allowing the upper and lower layers of bricks to have appropriate displacement due to different expansion coefficients, without generating excessive tensile stress and causing damage to the bricks.

[0029] like Figure 1 and Figure 2 The combined arch bricks shown are all specially designed and marked on the bricks. During construction, you only need to lay them in sequence to ensure the structural stability of the arch. The mortar joints are strictly controlled at 2 to 3 mm to ensure that the final door bricks can be put in smoothly.

[0030] The early designs of CDQ primary dust removal gravity settling chambers all adopted a retaining wall design, which resulted in large circulation gas resistance during operation and frequent brick falling. This design takes into account the convenience of production, construction, and replacement, while ensuring a stable and reliable structure.

[0031] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A primary dust removal retaining wall for dry coke quenching, characterized in that: include: An arch brick layer (1), wherein the arch brick layer (1) is a multi-layer arch structure formed by stacking a plurality of bricks; A standard brick layer (2), wherein the standard brick layer (2) is located on the top of the arch brick layer (1).

2. The primary dust removal retaining wall for dry coke quenching according to claim 1 is characterized in that: The arch brick layer (1) comprises a plurality of standard arching layers (11), a vault brick layer (12) and a combined leveling brick layer (13) which are arranged in sequence from bottom to top.

3. The primary dust removal retaining wall for dry coke quenching according to claim 2 is characterized in that: The standard arched layer (11) comprises a bottom brick (111), an arched brick (112) and a plurality of combined vaulted bricks (113) arranged in sequence from both ends to the middle, and the bottom bricks (111) in the upper standard arched layer (11) are laid on top of the arched bricks (112) in the lower standard arched layer (11).

4. The primary dust removal retaining wall for dry coke quenching according to claim 2 is characterized in that: The tops of the bricks used to build the vault brick layer (12) are parallel to the horizontal plane.

5. The primary dust removal retaining wall for dry coke quenching according to claim 1 is characterized in that: The bricks used for building the arch brick layer (1) are mullite bricks.

6. The primary dust removal retaining wall for dry coke quenching according to claim 1, characterized in that: The bricks used for laying the standard brick layer (2) are clay bricks.

7. The primary dust removal retaining wall for dry coke quenching according to claim 1, characterized in that: The arch brick layer (1) and the standard brick layer (2) can slide relative to each other.

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