Cylinder brick quick-change structure of top-jet gasification furnace

Abstract

The utility model discloses a quick-change structure for cylinder bricks of a top-jet gasifier, which relates to the technical field of gasifier equipment and comprises a gasifier body, wall bricks, lining bricks and refractory bricks are sequentially laid on the inner wall of the gasifier body, and the wall bricks, the lining bricks and the refractory bricks are stacked in multiple rings. A quick-change boundary unit is arranged above the conical bottom of the gasification furnace body; the quick-change boundary unit comprises an embedding groove and an embedding block which are embedded with each other; the embedding grooves and the embedding blocks of the adjacent ring layers are fixedly connected to form a stable embedding structure support, so that damaged brick bodies located on the lower layers of the embedding grooves and the embedding blocks can be quickly dismounted; the quick-change boundary unit provides an interface which is easy to disassemble and replace damaged brick bodies, modular replacement of refractory materials on the inner wall of the gasifier is achieved, the embedded grooves and the embedded blocks of the adjacent ring layers are fixedly connected to form a stable supporting structure, the embedded structure not only provides extra structural strength, but also ensures tight connection between the brick bodies, and the brick bodies are not prone to being damaged. Permeation of hot air and slag is prevented, and meanwhile the dismounting and replacing process is simplified.

Description

Technical Field

[0001] This utility model relates to the technical field of gasification furnace equipment, and more specifically to a quick-change structure for the top-jet gasification furnace cylinder bricks. Background Technology

[0002] In the field of coal-water slurry gasification technology, the stable operation and efficient maintenance of the gasifier are crucial. During operation, traditional top-jet coal-water slurry gasifiers often experience issues due to various factors such as nozzle injection radius, pressure, and internal flow field. For example, the upper part of the furnace shell facing the fire often operates well, while the top 4-6 layers of refractory material above the junction of the cone bottom and the furnace shell facing the fire are severely damaged, preventing synchronous operation. This results in a situation where, when dismantling the severely damaged sections, most of the refractory material in the upper part of the furnace shell must be removed, leading to significant resource waste.

[0003] like Figure 1 As shown, in traditional technology, the refractory bricks in the cylinder are installed in a homogeneous layered structure, with each layer of bricks fixed by a simple flat joint, lacking the ability to be replaced in a modular and segmented manner. When a section of the refractory bricks is damaged and needs repair, because the upper and lower layers of bricks are tightly connected and there is no independent support structure, all the cylinder bricks (including the undamaged upper layer bricks) must be removed to replace the damaged parts, resulting in serious waste of resources and high maintenance costs. At the same time, the need to remove all the bricks and rebuild them increases the maintenance cycle and affects the continuity of production.

[0004] Therefore, how to provide a quick-change structure for cylinder bricks that can replace only the refractory material in severely corroded and repairable parts is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a quick-change structure for the top jet blast furnace shell bricks, aiming to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick-change structure for the bricks of a top-mounted gasifier includes a gasifier body. The inner wall of the gasifier body is sequentially lined with multi-ring stacked wall bricks, inner lining bricks, and refractory bricks. A quick-change dividing unit is located between the inner lining bricks and the refractory bricks, and above the conical bottom of the gasifier body. The quick-change dividing unit includes interlocking grooves and blocks. The grooves and blocks of adjacent rings are fixedly connected to form a stable interlocking structure support, so as to realize the rapid removal of damaged bricks located below the grooves and blocks.

[0008] Through the above technical solution, this utility model provides a quick-change structure for the cylinder bricks of a top-mounted gasifier. By setting a quick-change dividing unit between the inner lining bricks and the refractory bricks and located above the cone bottom, it provides an interface for easy removal and replacement of damaged bricks, realizing modular replacement of the refractory material on the inner wall of the gasifier. This avoids the tedious and wasteful process of removing a large number of undamaged bricks in the traditional method, effectively solving the problem of having to remove all cylinder bricks for repair due to local refractory brick damage in the traditional technology. This reduces resource waste and maintenance costs, while shortening the maintenance cycle and improving production continuity. The grooves and blocks of adjacent ring layers are fixedly connected by an interlocking method to form a stable support structure. The interlocking structure not only provides additional structural strength but also ensures a tight connection between the bricks, preventing the penetration of hot gas and molten slag, while simplifying the removal and replacement process.

[0009] Preferably, in the above-mentioned quick-change structure for top jet refractory furnace shell bricks, the groove is formed on the side wall of the inner lining brick, the insert is located on the refractory brick, and its protrusion engages with the groove. This makes the connection between the bricks more stable, facilitates construction and installation, and improves the reliability and operability of the quick-change structure.

[0010] Preferably, in the above-mentioned quick-change structure for top jet flare furnace cylinder bricks, the cross-sections of the grooves and the blocks are dovetail-shaped or stepped. These shapes provide good mechanical interlocking, enhance the connection strength between bricks, prevent brick displacement or detachment under harsh conditions such as high temperature and mechanical vibration, and ensure the safe and stable operation of the equipment.

[0011] Preferably, in the above-mentioned quick-change structure for top jet flare furnace cylinder bricks, the surfaces of the groove and the block in contact are coated with a high-temperature resistant protective coating. This can effectively improve the high-temperature resistance and corrosion resistance of the bricks, extend their service life, reduce maintenance and replacement frequency, and lower operating costs.

[0012] Preferably, in the above-mentioned quick-change structure for the top jet ignition furnace shell bricks, the protective coating is a silicon carbide-based ceramic coating or a nickel-based alloy coating. These materials have excellent high-temperature resistance, wear resistance, and corrosion resistance, which can further enhance the protective effect of the bricks, adapt to harsher working environments, and improve the overall performance and reliability of the equipment.

[0013] Preferably, the above-mentioned quick-change structure for top jet flare furnace cylinder bricks also includes a monitoring module, which is installed at the connection between the groove and the block. By monitoring the usage status of the bricks in real time, such as temperature and pressure parameters, and feeding this data back to the external control system via a wireless transmission module, potential problems can be detected in a timely manner, allowing for early maintenance and replacement, avoiding equipment failures, and improving production efficiency and safety.

[0014] Preferably, in the above-mentioned quick-change structure for top jet refractory furnace shell bricks, the quick-change dividing unit is located 4-6 layers above the junction of the cone bottom and the refractory brick, and the fitting depth of the groove and the insert in each layer is 1 / 3 to 1 / 2 of the brick thickness. This design places the quick-change dividing unit in a relatively reasonable position, effectively supporting the upper bricks while facilitating the quick removal of damaged lower bricks when needed. Simultaneously, the set fitting depth ensures the connection strength and stability between bricks, guaranteeing the reliability and practicality of the quick-change structure.

[0015] Preferably, in the above-mentioned quick-change structure for the top-jet gasifier shell bricks, the inner lining bricks are chrome corundum bricks, and the refractory bricks are high-chromium bricks. Chrome corundum bricks have excellent erosion resistance and high-temperature strength, while high-chromium bricks have good corrosion resistance and wear resistance. The reasonable combination of these two types of bricks can give full play to their respective advantages, improve the overall protective performance of the gasifier inner wall, extend the service life of the equipment, and adapt to harsh working conditions such as high temperature and strong reducing gases.

[0016] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a quick-change structure for the top jet blast furnace shell bricks, which has the following beneficial effects:

[0017] The groove and block design of the quick-change dividing unit of this utility model allows for the rapid removal of damaged bricks in the lower layer when it is necessary to replace damaged bricks, without affecting the stability of the upper layer of bricks. This greatly shortens the maintenance cycle, improves production continuity, and avoids the problem of having to remove all the cylinder bricks for repair due to local refractory brick damage in traditional technology, thus reducing resource waste and maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 The attached diagram is a schematic diagram of the structure of a conventional cylindrical brick.

[0020] Figure 2 The attached figure is a structural schematic diagram of the quick-change structure for the top jet ignition furnace cylinder bricks provided by this utility model.

[0021] in:

[0022] 1-Gasifier body; 11-Conical bottom; 2-Wall brick; 3-Inner lining brick; 4-Refractory brick; 5-Quick-change dividing unit; 51-Insertion groove; 52-Insertion block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] See appendix Figure 2 This utility model discloses a quick-change structure for the bricks of a top-mounted gasifier cylinder, including a gasifier body 1. The inner wall of the gasifier body 1 is sequentially covered with multi-ring stacked wall bricks 2, inner lining bricks 3, and refractory bricks 4. A quick-change dividing unit 5 is provided between the inner lining bricks 3 and the refractory bricks 4 and above the cone bottom 11 of the gasifier body 1. The quick-change dividing unit 5 includes interlocking grooves 51 and blocks 52. The grooves 51 and blocks 52 of adjacent ring layers are fixedly connected to form a stable interlocking structure support, so as to realize the quick removal of damaged bricks located in the lower layer of the grooves 51 and blocks 52.

[0025] To further optimize the above technical solution, the groove 51 is opened on the side wall of the inner lining brick 3, and the block 52 is located on the refractory brick 4, and its protrusion is fitted into the groove 51.

[0026] To further optimize the above technical solution, the cross-sections of the slot 51 and the block 52 are dovetail-shaped, rectangular, or stepped.

[0027] To further optimize the above technical solution, the surfaces of the groove 51 and the block 52 that come into contact are coated with a high-temperature resistant protective coating.

[0028] To further optimize the above technical solution, the protective coating is a silicon carbide-based ceramic coating or a nickel-based alloy coating.

[0029] To further optimize the above technical solution, a monitoring module is also included, which is installed at the connection between the slot 51 and the block 52.

[0030] To further optimize the above technical solution, the quick-change dividing unit 5 is located 4-6 layers above the junction of the cone bottom 11 and the refractory brick 4, and the fitting depth of the groove 51 and the block 52 in each layer is 1 / 3 to 1 / 2 of the brick thickness.

[0031] To further optimize the above technical solution, the brick body of the quick-change dividing unit 5 is provided with a cooling channel. The cooling channel is used to introduce a cooling medium to reduce the temperature of the brick body and reduce the impact of thermal stress on the brick body.

[0032] To further optimize the above technical solution, the bricks of the quick-change dividing unit 5 are connected by elastic connectors, which are springs or elastic rubber pads, to absorb the displacement of the bricks during thermal expansion and vibration, and to ensure the sealing and stability between the bricks.

[0033] To further optimize the above technical solution, the inner lining brick 3 is a chrome corundum brick, and the refractory brick 4 is a high chrome brick.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-change structure of a top-spraying gasifier cylinder brick, comprising a gasifier body (1), the inner wall of the gasifier body (1) being sequentially laid with wall bricks (2) arranged in a multi-ring layer, inner lining bricks (3) and refractory bricks (4), characterized in that, A quick-change interface unit (5) is arranged between the inner lining brick (3) and the refractory brick (4) and above the conical bottom (11) of the gasifier body (1); the quick-change interface unit (5) comprises a slot (51) and a block (52) which are mutually embedded; the slot (51) and the block (52) of adjacent rings are fixedly connected, forming a stable embedded structure support to realize quick removal of damaged bricks below the slot (51) and the block (52).

2. A quick change structure of a top gasifier shell brick according to claim 1, wherein The slot (51) is arranged on the side wall of the inner lining brick (3), and the block (52) is arranged on the refractory brick (4) and embedded with the slot (51).

3. The quick change structure of the top gasifier shell brick according to claim 1, characterized in that, The cross section of the slot (51) and the block (52) is dovetail-shaped or ladder-shaped.

4. The quick change structure of the top gasifier shell brick according to claim 1, characterized in that, The surface of the slot (51) and the block (52) in contact is coated with a high-temperature-resistant protective coating.

5. A quick change structure of a roof gasifier cylinder brick according to claim 4, wherein The protective coating is a silicon carbide-based ceramic coating or a nickel-based alloy coating.

6. The quick change structure of the top gasifier shell brick according to claim 1, characterized in that, A monitoring module is further included, which is installed at the connection between the slot (51) and the block (52).

7. The quick change structure of the top gasifier shell brick according to claim 1, characterized in that, The quick-change interface unit (5) is arranged at 4-6 layers above the joint between the conical bottom (11) and the refractory brick (4), and the embedding depth of the slot (51) and the block (52) in each layer is 1 / 3 to 1 / 2 of the thickness of the brick.

8. The quick change structure of the top gasifier shell brick according to claim 1, characterized in that, The inner lining brick (3) is a chrome corundum brick, and the refractory brick (4) is a high-chrome brick.

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