A kind of anti-carbon deposition checker brick

Abstract

The embodiment of the present application discloses an anti-carbon deposition checker brick, including a checker brick body, wherein the checker brick has a plurality of transparent grid holes parallel to the side surface, and an inner lining is arranged in the grid holes, and the inner lining is used to isolate the gas from the hole wall. In the process of heating the coal gas in the regenerative heating furnace, the precipitated carbon powder is gathered on the inner lining, rather than the hole wall of the grid hole of the checker brick, thereby solving the problem of brittle cracking of the checker brick caused by carbon deposition on the hole wall of the grid hole of the checker brick.

Description

Technical Field

[0001] The present application relates to the technical field of heat storage hot blast furnaces, and in particular to a carbon deposition-proof checker brick. Background Art

[0002] The coal gas required for oxygen blast furnace production is heated by a regenerative heating furnace. The temperature in the regenerative heating furnace gradually increases from bottom to top, ranging from 400℃ to 1300℃. The cold coal gas enters the regenerative heating furnace from the bottom and is gradually heated, and then transported to the blast furnace tuyere through a pipeline.

[0003] However, when the coal gas is in the temperature range of 300℃ to 700℃, carbon deposition reaction will occur, and carbon powder will accumulate on the hole wall of the lattice brick, causing carbon deposition on the lattice brick. Over time, the lattice brick will become brittle and crack, reducing its strength.

[0004] Therefore, how to solve the problem of brittle cracking of checker bricks caused by carbon deposition on the hole walls of the checker bricks has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The present application proposes an anti-carbon deposition checker brick to solve the problem of brittle cracking of the checker brick caused by carbon deposition on the hole walls of the checker brick holes.

[0006] In order to achieve the above-mentioned purpose, the present application provides a carbon deposition-proof checker brick, comprising a checker brick body,

[0007] The lattice brick body has a plurality of lattice holes, and the lattice holes are provided with linings for isolating the gas from the hole walls of the lattice holes.

[0008] Preferably, in the above-mentioned anti-carbon deposition checker brick, the lining and the checker holes are interference fit.

[0009] Preferably, in the above-mentioned anti-carbon deposition checker brick, the lining is a high thermal conductivity lining.

[0010] Preferably, in the above-mentioned anti-carbon deposition checker brick, the lining is a stainless steel lining.

[0011] Preferably, in the above-mentioned anti-carbon deposition checker brick, the thickness of the lining is 0.4 mm-2 mm.

[0012] Preferably, in the above-mentioned anti-carbon deposition checker brick, the length of the lining is equal to the length of the checker hole.

[0013] Preferably, in the above-mentioned anti-carbon deposition checker brick, the shape of the inner wall of the lining is the same as or different from the shape of the checker holes.

[0014] Preferably, in the above-mentioned anti-carbon deposition checker brick, the checker brick body is a full-refractory checker brick.

[0015] Preferably, in the above-mentioned anti-carbon deposition checker brick, the checker brick body is a cast iron checker brick.

[0016] The anti-carbon deposition checker brick provided in the embodiment of the present application comprises a checker brick body, wherein the checker brick has a plurality of transparent grid holes parallel to the side surface, and an inner lining is arranged in the grid holes, and the inner lining is used to isolate the gas from the hole wall. In the process of heating the coal gas in the regenerative heating furnace, the precipitated carbon powder is gathered on the inner lining, instead of being gathered on the hole wall of the grid hole of the checker brick, thereby solving the problem of brittle cracking of the checker brick caused by carbon deposition on the hole wall of the grid hole of the checker brick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present application can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0018] Figure 1 It is a structural schematic diagram of the anti-carbon deposition checker brick of the present application.

[0019] in:

[0020] 1- Checker brick body; 2- Lining. DETAILED DESCRIPTION

[0021] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the related application, rather than to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0022] It should be noted that, for the convenience of description, only the parts related to the relevant application are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0023] See also Figure 1 .

[0024] Some embodiments of the present application disclose an anti-carbon deposition checker brick, including a checker brick body 1, the checker brick having a plurality of transparent grid holes parallel to the side surface, and an inner lining 2 arranged in the grid holes, the inner lining 2 being used to isolate the gas from the hole wall. In the process of heating the coal gas in the regenerative heating furnace, the precipitated carbon powder is gathered on the inner lining 2 instead of the hole wall of the grid hole of the checker brick, thereby solving the problem of brittle cracking of the checker brick caused by carbon deposition on the hole wall of the grid hole of the checker brick.

[0025] At the same time, the lining 2 can also support the hole walls of the lattice holes, further improving the overall strength of the lattice brick body 1.

[0026] Preferably, the inner lining 2 is arranged in all the lattice holes of the checker brick body 1, in which case the checker brick has the best anti-carbon deposition effect.

[0027] However, the lining 2 may be provided only in some of the lattice holes of the checker brick body 1, which can also play a certain role in preventing carbon deposition of the checker brick. Preferably, the lattice holes provided with the lining 2 and the lattice holes without the lining 2 are evenly distributed on the checker brick body 1, or the number of the lattice holes provided with the lining 2 is greater than the number of the lattice holes without the lining 2. The lattice holes without the lining 2 will be brittle and cracked due to carbon deposition during use, but the lattice holes provided with the lining 2 will not be brittle and cracked due to carbon deposition during use. Therefore, the lattice holes provided with the lining 2 will support the lattice holes without the lining 2, and can also ensure the strength of the checker brick to a certain extent. Compared with the checker brick body 1 without the lining 2 in the prior art, the service life is relatively extended.

[0028] There are many ways to match the lining 2 with the grid holes of the checker brick body 1.

[0029] In some embodiments of the present application, the lining 2 is interference-fitted with the grid holes, which is simple to connect and low in cost, and does not affect the strength of the checker bricks.

[0030] In some other embodiments of the present application, the lining 2 is connected to the grid holes by snapping. Specifically, a snap block is provided on the lining 2, and a snap groove is provided on the hole wall of the grid hole. The lining 2 and the grid holes are connected by the snap block and the snap groove.

[0031] Preferably, the lining 2 and the grid holes are connected in a detachable manner to facilitate replacement or cleaning of the lining 2 .

[0032] In order to prevent the lining 2 from affecting the heat absorption and heat release of the checker brick body 1, the lining 2 is made of a high thermal conductivity material, so as to prevent carbon deposition while not affecting the heat absorption and heat release of the checker brick body 1.

[0033] The lining 2 may be a metal lining with high thermal conductivity or a non-metal lining with high thermal conductivity.

[0034] In some embodiments of the present application, the liner 2 is a stainless steel liner.

[0035] The thickness of the lining 2 will also affect the heat absorption and heat release of the checkered brick body 1. In this solution, the thickness of the lining 2 is designed to be 0.4mm-2mm, while not occupying too much internal space of the grid holes, thereby reducing the impact on the flow area of ​​the grid holes.

[0036] Preferably, the length of the lining 2 is equal to the length of the grid hole along its own axial direction, so as to protect various positions of the hole wall of the grid hole of the checker brick body 1, so as to further reduce the risk of brittle cracking of the checker brick.

[0037] The shape of the outer wall of the liner 2 matches the shape of the inner wall of the grid hole, and the outer wall of the liner 2 is close to the inner wall of the grid hole to reduce the amount of gas entering from the gap between the liner 2 and the grid hole. The shape of the inner wall of the liner 2 can be the same as or different from the shape of the inner wall of the grid hole. Preferably, the shape of the inner wall of the liner 2 is circular.

[0038] The checker brick body 1 of the anti-carbon deposition checker brick disclosed in the present solution may be a full-refractory checker brick or a cast iron checker brick.

[0039] In the embodiment where the checker brick body 1 is an all-refractory checker brick, the all-refractory checker brick may be a siliceous checker brick, a clay checker brick, a high-alumina checker brick, a mullite checker brick, a sillimanite checker brick, or the like.

[0040] In the embodiment where the lattice brick body 1 is a cast iron lattice brick, the carbon deposition reaction of the cast iron lattice brick is stronger than that of the all-refractory lattice brick. Therefore, an inner lining 2 is provided on the inner wall of the cast iron lattice brick, which can weaken the carbon deposition reaction to a certain extent, that is, it not only reduces the influence of carbon deposition on the cast iron lattice brick, but also weakens the carbon deposition reaction.

[0041] In this embodiment, the cast iron checker bricks and the lining 2 may be connected by welding in addition to the connection method disclosed above.

[0042] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used, and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. The scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned application concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in this application (but not limited to) to form a technical solution.

Claims

1. An anti-carbon deposition checker brick, characterized in that: It comprises a checker brick body (1), The lattice brick body (1) has a plurality of lattice holes, and an inner lining (2) is arranged in the lattice holes to isolate the gas from the hole walls of the lattice holes; The inner lining (2) and the grid holes are interference fit, The lining (2) is a high thermal conductivity lining.

2. The anti-carbon deposition checker brick according to claim 1, characterized in that: The lining (2) is a stainless steel lining.

3. The anti-carbon deposition checker brick according to claim 1, characterized in that: The thickness of the lining (2) is 0.4 mm-2 mm.

4. The anti-carbon deposition checker brick according to claim 1, characterized in that: The length of the lining (2) is equal to the length of the grid holes.

5. The anti-carbon deposition checker brick according to claim 1, characterized in that: The shape of the inner wall of the lining (2) is the same as or different from the shape of the grid holes.

6. The anti-carbon deposition checker brick according to claim 1, characterized in that: The checker brick body (1) is a full-refractory checker brick.

7. The anti-carbon deposition checker brick according to claim 1, characterized in that: The lattice brick body (1) is a cast iron lattice brick.

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