A gas anti-coke floating structure for the inclined wall bricks of a dry quenching furnace

Abstract

The invention discloses a gas floating coke prevention structure of a dry quenching furnace inclined channel wall brick, comprising a furnace shell, insulation bricks, a ceramic fiber blanket, a castable, a clay brick, and a mullite corundum brick. A channel is built in the furnace shell, the channels are evenly arranged at adjacent intervals, the cross section of the channel is rectangular, the channel in the furnace shell is provided with a ceramic fiber blanket, a castable, a clay brick, and a mullite corundum brick from outside to inside, a gap is left between the castable and the furnace shell and is filled with a ceramic fiber blanket, the clay brick is located between the castable and the mullite corundum brick, the mullite corundum brick is located in the innermost layer of the channel, the mullite corundum brick section located at the lower end of the channel is vertical, the insulation brick is located at the upper end of the channel directly connected to the furnace shell, and the insulation brick fixed at the upper end of the channel on the side away from the furnace shell is in a right-angle step shape.

Description

Technical Field

[0001] The invention relates to the technical field of dry quenching furnace equipment, and in particular to a gas anti-coke floating structure for inclined wall bricks of a dry quenching furnace. Background Art

[0002] In the dry quenching furnace, the coke passes through the pre-storage area, the chute area and the cooling area from the furnace top in sequence and is finally discharged from the dry quenching furnace. Among them, the circulating working gas (inert gas, such as nitrogen) used for heat exchange and cooling of the coke enters from the bottom of the dry quenching furnace 1 and enters the annular gas channel through the chute area 3. The gas is led out from the annular gas channel for regeneration and recycling.

[0003] The existing CDQ furnace has a single structure, and most of the furnace structures adopt a straight up and down structure. When in use, there is a large space for coke to float up, and the channel is easily blocked when the coke floats up, resulting in abnormal furnace exhaust and failure to meet normal exhaust volume requirements.

[0004] Therefore, the applicant has specially designed a new gas anti-coke floating structure for the inclined wall bricks of a CDQ furnace from the perspective of practical work to meet the requirements of special use. Summary of the invention

[0005] The object of the present invention is to provide a gas anti-floating coke structure of the inclined wall bricks of a dry quenching furnace, comprising a furnace shell, insulation bricks, a ceramic fiber blanket, a castable, a clay brick, and a mullite corundum brick. A channel is built in the furnace shell, and the channels are evenly arranged at adjacent intervals. The cross-section of the channel is rectangular. The channel in the furnace shell is composed of a ceramic fiber blanket, a castable, a clay brick, and a mullite corundum brick from the outside to the inside. A gap is left between the castable and the furnace shell and is filled with a ceramic fiber blanket. The clay brick is located between the castable and the mullite corundum brick, the mullite corundum brick is located in the innermost layer of the channel, and the mullite corundum brick section located at the lower end of the channel is vertical.

[0006] Furthermore, the heat-insulating bricks are located at the uppermost end of the channel and are directly connected to the furnace shell, and the heat-insulating bricks fixed at the upper end of the channel on the side away from the furnace shell are in a right-angle step shape.

[0007] Furthermore, the mullite corundum bricks located on the short side of the channel close to the furnace shell adopt a stepped structure design from the insulation brick section to the mullite corundum brick vertical section of the channel.

[0008] Furthermore, the adjacent angles between the channels are controlled to be 15 degrees.

[0009] Furthermore, the mullite corundum bricks laid on the side walls corresponding to the inner long sides of the channel are in a sawtooth step structure.

[0010] Furthermore, the opposite surfaces of the sawtooth step are trapezoidal surfaces, and the width of the sawtooth step is 70-150 mm.

[0011] Furthermore, the mullite corundum bricks are formed by masonry and pressing in a stepped structure, and an angle gap is left between every two adjacent mullite corundum bricks.

[0012] Furthermore, the vertical length of the right-angled steps of the heat-insulating bricks occupies one fifth of the total length of the channel.

[0013] Furthermore, the angle of the angle gap is controlled between 30-42 degrees.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the channel with a stepped structure design can not only ensure smooth exhaust and smoke exhaust, but also effectively block the discharge of coke from the channel, prevent the coke from floating upward along the inclined surface, avoid the exhaust channel from being blocked, keep the exhaust channel unobstructed, and ensure normal exhaust volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall cross section of the present invention;

[0016] Figure 2 AA is a schematic cross-sectional view of the channel of the present invention;

[0017] Figure 3 BB is a schematic cross-sectional view of the channel of the present invention;

[0018] Figure 4 It is a partially enlarged schematic diagram of the sawtooth of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] like Figure 1-4 As shown, a gas anti-floating coke structure of the inclined wall bricks of a dry quenching furnace comprises a furnace shell 1, insulation bricks 2, ceramic fiber blankets 3, castables 4, clay bricks 5, and mullite corundum bricks 6. A channel is built in the furnace shell 1, and the channels are evenly spaced adjacently. The cross section of the channel is rectangular. The channel in the furnace shell 1 is composed of a ceramic fiber blanket 3, a castable 4, a clay brick 5, and a mullite corundum brick 6 from outside to inside. A gap is left between the castable 4 and the furnace shell 1 and is filled with the ceramic fiber blanket 3. The clay bricks 5 are located between the castable 4 and the mullite corundum bricks 6. The mullite corundum bricks 6 are located in the innermost layer of the channel, and the mullite corundum brick 6 section at the lower end of the channel is vertical.

[0021] In this embodiment, the insulation bricks 2 are located at the uppermost end of the channel and are directly connected to the furnace shell 1 , and the insulation bricks 2 fixed at the upper end of the channel on the side away from the furnace shell 1 are in a right-angle step shape.

[0022] In this embodiment, the mullite corundum bricks 6 located on the short side of the channel close to the furnace shell 1 adopt a stepped structure design from the insulation brick 2 section to the vertical section of the mullite corundum bricks 6 in the channel.

[0023] In this embodiment, the adjacent angles between the channels are controlled to be 15 degrees.

[0024] In this embodiment, the mullite corundum bricks 6 built on the side walls corresponding to the inner long sides of the channel are in a sawtooth step structure.

[0025] In this embodiment, the opposite surfaces of the sawtooth step are trapezoidal surfaces, and the width of the sawtooth step is 70-150 mm.

[0026] In this embodiment, the mullite corundum bricks 6 are formed by laying and pressing in a stepped structure, and an angle gap is left between every two adjacent mullite corundum bricks 6 .

[0027] In this embodiment, the vertical length of the right-angled steps of the heat-insulating bricks 2 occupies one fifth of the total length of the channel.

[0028] In this embodiment, the angle of the angle gap is controlled between 30-42 degrees.

[0029] The mullite corundum brick 6 adopts a stepped structure design from the insulation brick 2 section to the vertical section of the mullite corundum brick 6 in the channel, which can effectively prevent coke from floating upward along the slope. The angle and size of the stepped structure design are appropriately modified according to the actual exhaust volume.

[0030] The stepped structure design ensures a smooth exhaust passage and meets normal exhaust volume standards.

[0031] The present invention adopts a stepped structure design and a sawtooth step design structure for the side wall and the opposite surface in the same channel to ensure the normal use of the furnace body and the compliance with emission standards.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gas anti-coke floating structure for the inclined wall bricks of a CDQ furnace, characterized in that: The furnace shell (1) comprises a furnace shell (1), an insulating brick (2), a ceramic fiber blanket (3), a castable (4), a clay brick (5), and a mullite corundum brick (6). The furnace shell (1) is provided with a channel, the channels are arranged evenly spaced adjacent to each other, the channel cross section is rectangular, the channel in the furnace shell (1) is provided with a ceramic fiber blanket (3), a castable (4), a clay brick (5), and a mullite corundum brick (6) from the outside to the inside, a gap is left between the castable (4) and the furnace shell (1) and is filled with a ceramic fiber blanket (3), the clay brick (5) is located between the castable (4) and the mullite corundum brick (6), the mullite corundum brick (6) is located at the innermost layer of the channel, and the mullite corundum brick (6) at the bottom end of the channel is vertical; The heat insulating brick (2) is located at the uppermost end of the channel and is in direct contact with the furnace shell (1), and the heat insulating brick (2) fixed at the upper end of the channel on the side away from the furnace shell (1) is in the shape of a right-angle step; The mullite corundum bricks (6) laid on the side walls corresponding to the inner long sides of the channel are in a sawtooth step structure; The opposite surfaces of the sawtooth step are trapezoidal surfaces, and the width of the sawtooth step is 70-150 mm.

2. A CDQ furnace inclined wall brick gas floating coke prevention structure as claimed in claim 1, characterized in that: The mullite corundum bricks (6) located on the short side of the channel close to the furnace shell (1) are designed with a stepped structure from the insulation brick (2) section to the vertical section of the mullite corundum bricks (6) in the channel.

3. A CDQ furnace inclined wall brick gas floating coke prevention structure as claimed in claim 2, characterized in that: The adjacent angles between the channels are controlled to be 15 degrees.

4. A CDQ furnace inclined wall brick gas floating coke prevention structure as claimed in claim 3, characterized in that: The mullite corundum bricks (6) are formed by masonry pressing using a stepped structure, and an angle gap is left between every two adjacent mullite corundum bricks (6).

5. A CDQ furnace inclined wall brick gas floating coke prevention structure as claimed in claim 4, characterized in that: The vertical length of the right-angled steps of the heat-insulating bricks (2) accounts for one fifth of the total length of the channel.

6. A CDQ furnace inclined wall brick gas floating coke prevention structure as claimed in claim 5, characterized in that: The angle of the angle gap is controlled between 30-42 degrees.

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