Lining structure of cyanide-containing waste gas incinerator

Abstract

The utility model relates to the technical field of cyanogen-containing waste gas incinerators, in particular to a lining structure of a cyanogen-containing waste gas incinerator. The lining structure of the cyanide-containing waste gas incinerator comprises a furnace wall shell, a heat insulation layer is arranged on the inner side of the furnace wall shell, a wear-resistant fireproof layer is arranged on the inner side of the heat insulation layer, and Y-shaped anchoring nails and C-shaped buckles are connected to the furnace wall shell. According to the structure, through the arrangement of the Y-shaped anchoring nails, the integrity and grabbing force of the lining structure are greatly enhanced, and the thermal shock resistance of the lining is improved; the C-shaped buckles and the corundum mullite anchoring bricks are used in cooperation, the anchoring bricks are embedded in the castable, when the lining is subjected to stress and cracks occur, the cracks are interrupted, and the lining is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of cyanide-containing waste gas incinerators, in particular to a lining structure of a cyanide-containing waste gas incinerator. Background Art

[0002] Cyanide-containing waste gas typically originates from industries such as basic chemical synthesis, organic pharmaceutical synthesis, platinum refining, ore flotation, and metal electroplating. Because cyanide-containing waste gas is extremely toxic, it must be treated before discharge to ensure safety and environmental protection. As a key cyanide-containing waste gas treatment facility, the proper operation of the incinerator is crucial for environmental protection and resource recovery. The furnace, as the core component of the incinerator, has a direct impact on incineration efficiency and pollutant emissions.

[0003] The incinerator lining is the part of the incinerator that comes into direct contact with the exhaust gas and must be resistant to high temperatures and corrosion. Typically, incinerator linings are made of high-alumina refractory materials or specialized acid-resistant materials, which are designed to withstand high temperatures and the harmful substances in cyanide-containing exhaust gases. However, in the actual incineration process of cyanide-containing exhaust gases, the lining's poor thermal shock resistance can easily lead to damage. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a cyanide-containing waste gas incinerator lining structure. By setting up Y-type anchor nails, the integrity and gripping force of the lining structure are greatly enhanced, and the thermal shock resistance of the lining is improved; by using C-type clips and corundum mullite anchor bricks in combination, the anchor bricks are embedded in the castable. When the lining is subjected to stress and cracks appear, the cracks are interrupted, thereby avoiding the lining from falling off.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The cyanide-containing waste gas incinerator lining structure comprises a furnace wall shell, a heat insulation layer is provided on the inner side of the furnace wall shell, a wear-resistant and fire-resistant layer is provided on the inner side of the heat insulation layer, and the furnace wall shell is connected with Y-shaped anchor nails and C-shaped buckles.

[0007] A ceramic fiber board layer is provided between the furnace wall shell and the heat insulation layer, and the furnace wall shell, the ceramic fiber board layer, the heat insulation layer and the wear-resistant and fire-resistant layer are tightly fitted.

[0008] The longitudinal cross-section of the furnace wall shell is circular, and a C-shaped buckle is provided on the top of the furnace wall shell.

[0009] A corundum-mullite anchoring brick is provided below the C-shaped buckle. The corundum-mullite anchoring brick passes through the ceramic fiber board layer and the heat insulation layer and is connected to the wear-resistant and fire-resistant layer.

[0010] The Y-shaped anchor nails penetrate the ceramic fiber board layer and the heat insulation layer and are connected to the wear-resistant and fire-resistant layer.

[0011] There is no C-shaped buckle below the horizontal radial section of the furnace wall shell.

[0012] During the use of the castable, the anchors (Y-type anchor nails) play the role of closely adhering to the container wall, maintaining the integrity of the castable body, and increasing the castable's resistance to bending. Therefore, when selecting anchors and welding rods, the same material as the steel plate of the kiln equipment should be used to avoid cracking of the welds due to different expansion amounts, which would cause the anchors to fall off together with the castable. Anchors: The top 180° uses a corundum mullite anchor brick + 310s material C-type snap assembly, and the lower 180° uses a Y-type anchor nail (310s material). Improving the thermal shock resistance of refractory castables: By adopting castables with better thermal shock stability or improving the thermal shock resistance of refractory castables, they can resist drastic temperature changes and reduce damage caused by thermal stress. Protecting the castable with a surface coating or covering can prevent further corrosion and protect the structural integrity of the furnace.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model adopts the lining structure of the cyanide-containing waste gas incinerator, and the Y-shaped anchor nails are provided to greatly enhance the integrity and gripping force of the lining structure and improve the thermal shock resistance of the lining; by using the C-shaped buckle and the corundum mullite anchor bricks in combination, the anchor bricks are embedded in the castable, and when the lining is subjected to stress and cracks appear, the cracks are interrupted, thereby avoiding the lining from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the lining structure of the cyanide-containing waste gas incinerator of the utility model;

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0017] Figure 3 For this utility model Figure 1 Schematic diagram of the structure at B in the middle;

[0018] In the figure: 1. Furnace wall shell; 2. Ceramic fiber board layer; 3. Thermal insulation layer; 4. Wear-resistant and refractory layer; 5. Y-type anchor nail; 6. C-type clip; 7. Corundum mullite anchor brick. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings.

[0020] Example 1

[0021] like Figure 1 As shown, the lining structure of the cyanide-containing waste gas incinerator includes a furnace wall shell 1, an insulation layer 3 is provided on the inner side of the furnace wall shell 1, and a wear-resistant and fire-resistant layer 4 is provided on the inner side of the insulation layer 3. Figure 2 As shown, the furnace wall shell 1 is connected with a Y-shaped anchor nail 5 and a C-shaped clip 6. A ceramic fiber board layer 2 is provided between the furnace wall shell 1 and the thermal insulation layer 3. The furnace wall shell 1, the ceramic fiber board layer 2, the thermal insulation layer 3 and the wear-resistant and fire-resistant layer 4 are tightly fitted. The longitudinal cross-section of the furnace wall shell 1 is circular, and a C-shaped clip 6 is provided on the top of the furnace wall shell 1. A corundum mullite anchor brick 7 is provided below the C-shaped clip 6. The corundum mullite anchor brick 7 passes through the ceramic fiber board layer 2 and the thermal insulation layer 3 and is connected to the wear-resistant and fire-resistant layer 4. The Y-shaped anchor nail 5 passes through the ceramic fiber board layer 2 and the thermal insulation layer 3 and is connected to the wear-resistant and fire-resistant layer 4. There is no C-shaped clip 6 below the horizontal radial section of the furnace wall shell 1. The top 180° of the furnace wall shell 1 adopts a combination of a corundum mullite anchor brick 7 and a 310s material C-shaped clip 6, and the lower 180° adopts a Y-shaped anchor nail 5 (310s material).

[0022] The preparation of the cyanide-containing waste gas incinerator lining structure comprises the following steps:

[0023] (1) When preparing refractory castables, high-quality refractory aggregates should be selected as much as possible, and raw materials with low alkali content (such as bauxite and corundum) should be selected after washing and baking. If the raw materials are not calcined (such as garnet), more caution should be exercised and try to use a mixture of composite sodium and low concentration. The dispersion effect and filling effect of micropowder are conducive to improving the density of the castable, but the impurity content of micropowder should be properly controlled to minimize the amount of cement containing high alkali metal impurities; (2) Strengthen the control of construction water quality: the quantity and quality of construction water will also affect the damage. Appropriate water quality should be selected to avoid using water containing too many impurities or chemicals to ensure the quality and performance of the castable, and reduce the contact between the castable surface and the air: reducing the direct contact between the castable surface and the air through surface coating or covering can reduce oxidation and corrosion, thereby extending the service life of the castable; (3) Positive Correctly select the material of anchors and welding rods: anchors play a role in closely adhering to the container wall, maintaining the integrity of the castable body and increasing the bending resistance of the castable during the use of the castable. When selecting anchors and welding rods, they should be the same as the steel plate material of the kiln equipment to avoid cracking of the welds due to different expansion amounts, which will cause the anchors and castables to fall off together; (4) After all the materials are prepared, first weld the Y-type anchor nails 5 and C-type clips 6 to the furnace wall shell 1 at intervals, then place the corundum mullite anchor bricks 7 on the C-type clips 6, and then lay the ceramic fiber board layer 2, thermal insulation layer 3 and wear-resistant and refractory layer 4 in sequence.

Claims

1. A cyanide-containing waste gas incinerator lining structure, characterized in that: The invention comprises a furnace wall shell (1), wherein a heat insulating layer (3) is provided on the inner side of the furnace wall shell (1), a wear-resistant and fire-resistant layer (4) is provided on the inner side of the heat insulating layer (3), and a Y-shaped anchor nail (5) and a C-shaped buckle (6) are connected to the furnace wall shell (1).

2. The cyanide-containing waste gas incinerator lining structure according to claim 1, characterized in that: A ceramic fiber board layer (2) is provided between the furnace wall shell (1) and the heat insulation layer (3), and the furnace wall shell (1), the ceramic fiber board layer (2), the heat insulation layer (3) and the wear-resistant and fire-resistant layer (4) are tightly fitted.

3. The cyanide-containing waste gas incinerator lining structure according to claim 1, characterized in that: The longitudinal cross-section of the furnace wall shell (1) is circular, and a C-shaped buckle (6) is provided above the furnace wall shell (1).

4. The cyanide-containing waste gas incinerator lining structure according to claim 2, characterized in that: A corundum mullite anchoring brick (7) is provided below the C-shaped buckle (6). The corundum mullite anchoring brick (7) penetrates the ceramic fiber board layer (2) and the heat insulation layer (3) and is connected to the wear-resistant and fire-resistant layer (4).

5. The cyanide-containing waste gas incinerator lining structure according to claim 2, characterized in that: The Y-shaped anchor nail (5) passes through the ceramic fiber board layer (2) and the heat insulation layer (3) and is connected to the wear-resistant and fire-resistant layer (4).

6. The cyanide-containing waste gas incinerator lining structure according to claim 3, characterized in that: The furnace wall shell (1) is not provided with a C-shaped buckle (6) below the horizontal radial section.

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