Refractory lining structure of gasification furnace

Abstract

The utility model relates to the technical field of gasification furnaces, in particular to a refractory lining structure of a gasification furnace, which comprises a furnace shell, a brick supporting plate, a heat preservation brick, an ablation residue hooking brick, an upper outer side furnace brick, an upper inner side furnace brick, a lower outer side furnace brick, a lower inner side furnace brick and a repairing furnace brick, a plurality of heat preservation bricks are sequentially arranged at the outer end of the upper side of the brick supporting plate from top to bottom. The device is reasonable and compact in structure and convenient to use, and the barrel brick above the expansion joint hook brick is prevented from being integrally detached by trimming the ablated expansion joint hook brick, detaching the ablated barrel brick and installing, repairing and repairing the furnace brick; by installing the repairing furnace brick, the easily-ablated expansion joint is protected on the outer side of the repairing furnace brick and does not make direct contact with materials and flames, the easily-ablated part is transferred to the inner side of the repairing furnace brick, the effect of protecting the expansion joint is achieved, the service life of the ablated residual hook brick is prolonged, and the repairing furnace brick has the advantages of being stable, efficient and easy to install.

Description

Technical Field

[0001] The utility model relates to the technical field of gasifiers, and is a refractory lining structure of a gasifier. Background Art

[0002] For the refractory lining of a water coal slurry gasifier, the working environment is high pressure, high temperature, strong reducing atmosphere and liquid slag discharge. The refractory bricks are in a harsh working condition and need to withstand high-temperature ablation, the influence of furnace pressure fluctuations, the erosion and scouring of molten slag. The expansion joint part is the weakest part of the refractory lining, and the ablation situation is also the most serious. The repair of the expansion joint generally requires local replacement of furnace bricks.

[0003] At present, as the weak part of the gasifier lining, the local ablation of the furnace bricks at the expansion joint is serious. Since the furnace bricks (expansion joint hook bricks) at the expansion joint part penetrate deep into the inner side, the upper cylindrical bricks bearing the weight of the furnace bricks cannot be removed as a whole. Since the ablation condition of the upper cylindrical bricks is generally better than that of the furnace bricks at the expansion joint part, there is no need to replace them either. Therefore, the replacement of the furnace bricks that penetrate deep into the inner side at the expansion joint needs to be removed and replaced one by one, with great construction difficulty, long construction period and high labor intensity for workers. Summary of the Invention

[0004] The utility model provides a refractory lining structure of a gasifier, which overcomes the above-mentioned deficiencies of the prior art and can effectively solve the problem that it is not convenient to replace the existing expansion joint hook bricks after ablation.

[0005] The technical solution of the utility model is realized by the following measures: A refractory lining structure of a gasifier includes a furnace shell, a brick support plate, insulating bricks, ablated residual hook bricks, upper outer furnace bricks, upper inner furnace bricks, lower outer furnace bricks, lower inner furnace bricks and repair furnace bricks. A brick support plate is fixedly installed on the inner side of the lower part of the furnace shell. A plurality of insulating bricks are successively arranged from top to bottom at the outer end of the upper side of the brick support plate; Three layers of lower outer furnace bricks are successively arranged from top to bottom at the inner end of the upper side of the brick support plate. An ablated residual hook brick is arranged on the upper side of the inner end of the lower outer furnace brick at the uppermost position. Three layers of lower inner furnace bricks are successively arranged from top to bottom at the inner end of the brick support plate. A plurality of upper outer furnace bricks are successively arranged from top to bottom at the outer end of the upper side of the ablated residual hook brick. A plurality of upper inner furnace bricks are successively arranged from top to bottom at the inner end of the upper side of the ablated residual hook brick; A plurality of repair furnace bricks are successively arranged from top to bottom between the upper inner furnace brick and the lower inner furnace brick corresponding to the inner side position of the ablated residual hook brick; A first expansion joint is formed between the upper inner furnace brick at the lowermost position, the ablated residual hook brick and the outer end of the upper side of the repair furnace brick at the corresponding position. A second expansion joint is formed among the lower outer furnace brick at the uppermost position, the repair furnace brick at the lowermost position, the lower inner furnace brick at the uppermost position and the lower outer furnace brick at the middle position. A third expansion joint is formed among the lower outer furnace brick at the middle position, the upper side inner end of the lower inner furnace brick at the uppermost position and the lower outer furnace brick at the lowermost position.

[0006] The following are further optimizations and / or improvements to the above utility model technical solution:

[0007] The above may further include refractory mortar. Refractory mortar is provided between the upper side of the repaired furnace brick at the uppermost position and the inner side of the upper inner furnace brick at the corresponding position.

[0008] The above may further include a fiber plastic layer. A fiber plastic layer is provided between the outer side of the insulating brick and the inner side of the furnace shell.

[0009] The above may further include a fiber layer. A fiber layer is provided on the outer side of the brick support plate.

[0010] The above upper outer furnace brick may be a low-chromium brick, and the ablated residual hook brick, upper inner furnace brick, lower outer furnace brick, lower inner furnace brick, and repaired furnace brick are all high-chromium bricks.

[0011] The above insulating brick may be hollow spherical alumina.

[0012] The structure of the present utility model is reasonable and compact, and it is convenient to use. By trimming the expansion joint hook brick after ablation and removing the ablated cylinder bricks, and installing and supplementing the repaired furnace bricks, the overall removal of the cylinder bricks above the expansion joint hook brick is avoided; by installing the repaired furnace bricks, the easily ablated expansion joint is protected outside the repaired furnace brick, not directly contacting the material and flame, and the easily ablated part is transferred to the inner side of the repaired furnace brick, playing a role in protecting the expansion joint, delaying the service life of the ablated residual hook brick, and having the characteristics of stability, high efficiency and easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 is a schematic structural diagram of Embodiments 1 to 6 of the present utility model.

[0014] Attached Figure 2 is a schematic structural diagram of a refractory lining in the prior art.

[0015] Attached Figure 1 The codes in are: 1 is the furnace shell, 2 is the brick support plate, 3 is the insulating brick, 4 is the ablated residual hook brick, 5 is the upper outer furnace brick, 6 is the upper inner furnace brick, 7 is the lower outer furnace brick, 8 is the lower inner furnace brick, 9 is the repaired furnace brick, 10 is the first expansion joint, 11 is the second expansion joint, 12 is the third expansion joint, and 13 is the refractory mortar.

[0016] Attached Figure 2 The codes in are: 14 is the ablation curve, 15 is the expansion joint hook brick, 16 is the upper expansion joint, 17 is the middle expansion joint, 18 is the lower expansion joint, and 19 is the cylinder brick. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model is not limited by the following embodiments, and the specific implementation manner can be determined according to the technical solution of the present utility model and the actual situation.

[0018] In the present utility model, for the convenience of description, the description of the relative positional relationship of each component is carried out according to the layout mode of the attached drawings of the specification. For example, the positional relationships such as front, back, up, down, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 The following further describes the present utility model in conjunction with embodiments and the attached drawings:

[0019] The following further describes the present utility model in conjunction with embodiments and the attached drawings:

[0020] Embodiment 1: As shown in Figure 1 、 2 , the refractory lining structure of the gasifier includes a furnace shell 1, a brick support plate 2, a heat-insulating brick 3, an ablated residual hook brick 4, an upper outer furnace brick 5, an upper inner furnace brick 6, a lower outer furnace brick 7, a lower inner furnace brick 8, and a repair brick 9. A brick support plate 2 is fixedly installed inside the lower part of the furnace shell 1, and several heat-insulating bricks 3 are sequentially arranged from top to bottom at the outer end of the upper side of the brick support plate 2; three layers of lower outer furnace bricks 7 are sequentially arranged from top to bottom at the inner end of the upper side of the brick support plate 2. An ablated residual hook brick 4 is arranged on the upper side of the inner end of the lower outer furnace brick 7 at the uppermost position. Three layers of lower inner furnace bricks 8 are sequentially arranged from top to bottom at the inner end of the brick support plate 2. Several upper outer furnace bricks 5 are sequentially arranged from top to bottom at the outer end of the upper side of the ablated residual hook brick 4, and several upper inner furnace bricks 6 are sequentially arranged from top to bottom at the inner end of the upper side of the ablated residual hook brick 4; several repair bricks 9 are sequentially arranged from top to bottom between the upper inner furnace brick 6 and the lower inner furnace brick 8 corresponding to the inner position of the ablated residual hook brick 4; a first expansion joint 10 is formed between the upper inner furnace brick 6 at the lowermost position, the ablated residual hook brick 4, and the outer end of the upper side of the repair brick 9 at the corresponding position. A second expansion joint 11 is formed among the lower outer furnace brick 7 at the uppermost position, the repair brick 9 at the lowermost position, the lower inner furnace brick 8 at the uppermost position, and the lower outer furnace brick 7 at the middle position. A third expansion joint 12 is formed among the lower outer furnace brick 7 at the middle position, the upper side inner end of the lower inner furnace brick 8 at the uppermost position, and the lower outer furnace brick 7 at the lowermost position. During the use process, by trimming the ablated expansion joint hook brick 15 in the prior art and removing the ablated cylinder brick 19 in the prior art, and installing and supplementing the repair brick 9, it is avoided to remove the whole cylinder brick 19 above the expansion joint hook brick 15. By flexibly stacking the newly made repair bricks 9 upwards, the ablation of the cylinder brick 19 above the expansion joint hook brick 15 can be compensated in time; by installing the repair brick 9, the easily ablated expansion joint (upper expansion joint 16) is protected outside the repair brick 9, not directly contacting the material and the flame, and the easily ablated part is transferred to the inner side of the repair brick 9 (first expansion joint 10), playing a role in protecting the expansion joint and delaying the service life of the ablated residual hook brick 4.

[0021] According to actual needs, the above-mentioned refractory lining structure of the gasifier can be further optimized and / or improved:

[0022] Embodiment 2: As shown inFigure 1 As shown in the figure, it further includes refractory mortar 13. There is refractory mortar 13 between the upper side of the repaired furnace brick 9 at the uppermost position and the inner side of the corresponding upper inner furnace brick 6. During use, the gap between the repaired furnace brick 9 and the inner side of the upper inner furnace brick 6 is coated with refractory mortar 13 to prevent the ablation from expanding.

[0023] Example 3: As shown in the attached Figure 1 figure, it further includes a fiber plastic layer. There is a fiber plastic layer between the outer side of the insulating brick 3 and the inner side of the furnace shell 1. During use, with such a setting, the normal use requirements of the gasifier are met.

[0024] Example 4: As shown in the attached Figure 1 figure, it further includes a fiber layer. There is a fiber layer on the outer side of the brick support plate 2. During use, with such a setting, the normal use requirements of the gasifier are met.

[0025] Example 5: As shown in the attached Figure 1 figure, the upper outer furnace brick 5 is a low-chromium brick, and the ablated residual hook brick 4, upper inner furnace brick 6, lower outer furnace brick 7, lower inner furnace brick 8 and repaired furnace brick 9 are all high-chromium bricks. During use, with such a setting, the normal use requirements of the gasifier are met.

[0026] Example 6: As shown in the attached Figure 1 figure, the insulating brick 3 is hollow spherical alumina. During use, with such a setting, overheating of the furnace shell 1 is avoided.

[0027] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effects. Non-essential technical features can be increased or decreased according to actual needs to meet the requirements of different situations.

Claims

1. A refractory lining structure for a gasifier, characterized in that It includes a furnace shell, a brick supporting plate, insulation bricks, burnt residual hook bricks, upper outer furnace bricks, upper inner furnace bricks, lower outer furnace bricks, lower inner furnace bricks and repair furnace bricks. A brick supporting plate is fixedly installed on the inner side of the lower part of the furnace shell. A plurality of insulation bricks are arranged in sequence from top to bottom on the upper outer end of the brick supporting plate; three layers of lower outer furnace bricks are arranged in sequence from top to bottom on the upper inner end of the brick supporting plate, and a burnt residual hook brick is arranged on the upper side of the inner end of the lower outer furnace brick located at the top position; three layers of lower inner furnace bricks are arranged in sequence from top to bottom on the inner end of the brick supporting plate, a plurality of upper outer furnace bricks are arranged in sequence from top to bottom on the upper outer end of the burnt residual hook brick, and a plurality of upper outer furnace bricks are arranged in sequence from top to bottom on the upper inner end of the burnt residual hook brick A number of upper inner furnace bricks are arranged in sequence; a number of repair furnace bricks are arranged in sequence from top to bottom between the upper inner furnace bricks corresponding to the inner side positions of the burnt residual hook bricks and the lower inner furnace bricks; a first expansion joint is formed between the upper inner furnace bricks at the lowest position, the burnt residual hook bricks and the upper outer ends of the repair furnace bricks at the corresponding positions; a second expansion joint is formed between the lower outer furnace bricks at the highest position, the repair furnace bricks at the lowest position, the lower inner furnace bricks at the highest position and the lower outer furnace bricks at the middle position; a third expansion joint is formed between the lower outer furnace bricks at the middle position, the upper inner ends of the lower inner furnace bricks at the highest position and the lower outer furnace bricks at the lowest position.

2. The refractory lining structure of the gasifier according to claim 1, characterized in that It also includes refractory mortar, and refractory mortar is provided between the upper side of the repair furnace brick at the uppermost position and the inner side of the upper inner furnace brick at the corresponding position.

3. The refractory lining structure of the gasifier according to claim 1 or 2, characterized in that It also includes a fiber plastic layer, which is arranged between the outer side of the insulation brick and the inner side of the furnace shell.

4. The refractory lining structure of a gasifier according to claim 1 or 2, characterized in that It also includes a fiber layer, and the fiber layer is arranged on the outer side of the brick supporting plate.

5. The refractory lining structure of the gasifier according to claim 3, characterized in that It also includes a fiber layer, and the fiber layer is arranged on the outer side of the brick supporting plate.

6. The refractory lining structure of a gasifier according to claim 1, 2 or 5, characterized in that The upper outer furnace bricks are low-chrome bricks, and the burnt residual hook bricks, upper inner furnace bricks, lower outer furnace bricks, lower inner furnace bricks and repaired furnace bricks are all high-chrome bricks.

7. The refractory lining structure of the gasifier according to claim 3, characterized in that The upper outer furnace bricks are low-chrome bricks, and the burnt residual hook bricks, upper inner furnace bricks, lower outer furnace bricks, lower inner furnace bricks and repaired furnace bricks are all high-chrome bricks.

8. The refractory lining structure of a gasifier according to claim 4, characterized in that The upper outer furnace bricks are low-chrome bricks, and the burnt residual hook bricks, upper inner furnace bricks, lower outer furnace bricks, lower inner furnace bricks and repaired furnace bricks are all high-chrome bricks.

9. The refractory lining structure of a gasifier according to claim 1 or 2 or 5 or 7 or 8, characterized in that The insulation bricks are hollow spherical alumina.

10. The refractory lining structure of a gasifier according to claim 3, characterized in that The insulation bricks are hollow spherical alumina.

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