Gasification furnace quench ring convenient to clean

Abstract

This utility model discloses a gasifier quench ring that is easy to clean, relating to the field of quench ring technology. It includes a quench ring flange with multiple sets of quench ring flange mounting bolt holes inside. A quench ring quench water distribution pipe is welded to the rear end of the quench ring flange, and a quench water annular outlet is provided at the rear end of the quench ring quench water distribution pipe. This easy-to-clean gasifier quench ring, by comprising a quench ring quench water distribution pipe, a quench water annular outlet, a quench ring inlet pipe, an inlet pipe flange, and a quench ring downcomer, allows quench water to enter the quench ring quench water distribution pipe along the quench ring inlet pipe during use. The water flow from the four sets of quench ring inlet pipes is tangent to the inner ring of the quench ring quench water distribution pipe, resulting in a spiral flow. This forms a rotating tubular water film on the inner wall of the quench ring downcomer, achieving the function of forming a water film through rotating flow and solving the problem of complex and easily clogged device structures.

Description

Technical Field

[0001] This utility model relates to the field of quench ring technology, specifically a gasifier quench ring that is easy to clean. Background Technology

[0002] With the rapid development of my country's coal chemical industry, gasifiers, as key equipment in the coal gasification industry, are widely used. Due to material limitations, the high-temperature syngas generated in the gasifier combustion chamber cannot directly enter the syngas pipeline; it must undergo cooling and washing before being sent to subsequent processes. Currently, gasifier cooling methods are broadly divided into two types: quench process and semi-waste boiler process. The quench process is currently the most widely used method among gasifiers (including pulverized coal gasifiers) operating online in the industry. Currently, many enterprises experience blockages in the internal structure of the quench ring and internal quench water guide holes due to the quality of the quench water. This results in uneven water film distribution in the downcomer, downcomer deformation, and persistently low gasifier liquid level warnings, thus limiting the gasifier's load and output. Therefore, the selection of the quench ring, as a crucial component connecting the gasifier combustion chamber and the downcomer, significantly impacts the gasifier's operation.

[0003] Currently, most gasifiers using the quench process employ a quench ring consisting of a thickened hollow flange with a welded downcomer. The flange's internal cavity has 4-6 water inlet pipes at a -45° angle. The upper and middle parts of the flange's interior have 64 water inlet holes, each 10mm in diameter, set at a 30° angle, leading to a semi-circular pipe on the inner side of the flange. Opposite to the water inlet holes (on the outer side of the flange) are corresponding unclogging holes with plugs for clearing the quench ring's water inlet holes. The semi-circular pipe is fully welded to the upper part of the downcomer, while the lower part has a 4-5mm gap with the downcomer wall, allowing the quench water to form a water film on the downcomer. The disadvantages of this quench ring are: complex internal structure, high equipment cost, susceptibility to scaling and clogging of the internal water inlet holes, the unclogging holes being too close to the gasifier's central baffle, making maintenance difficult due to limited space, short single-cycle operation of the quench water ring, and a large workload for maintenance.

[0004] Now, a novel gasifier quench ring that is easy to clean is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a gasifier quench ring that is easy to clean, so as to solve the problem of complex structure and easy blockage mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gasifier quench ring that is easy to clean, comprising a quench ring flange, wherein multiple sets of quench ring flange mounting bolt holes are provided inside the quench ring flange, a quench ring quench water distribution pipe is welded to the rear end of the quench ring flange, a quench water annular outlet is provided at the rear end of the quench ring quench water distribution pipe, four sets of quench ring inlet pipes are welded to the outside of the quench ring quench water distribution pipe, an inlet pipe flange is threaded to the end of the quench ring inlet pipe, a first sealing ring is bonded to the outer side of the inlet pipe flange, a quench ring downcomer is welded to the rear end of the quench ring quench water distribution pipe, quench ring inspection and cleaning ports are welded to the left and right sides of the quench ring quench water distribution pipe respectively, a quench ring inspection port blind cover is fixedly connected to the port of the quench ring inspection and cleaning port, and a second sealing ring is bonded to the front end of the quench ring flange.

[0007] As a further technical solution of this utility model, the quench ring inlet pipe is connected to a 7-degree straight pipe through a 45-degree bend along a 45-degree direction and welded to the quench ring quench water distribution pipe in the tangential direction of the quench ring quench water distribution pipe. The inner diameter of the quench ring inlet pipe is 60-80% of the inner diameter of the quench ring quench water distribution pipe.

[0008] As a further technical solution of this utility model, the thickness of the quench ring flange is 60-100mm, and the mounting bolt holes of the quench ring flange pass through both ends of the quench ring flange.

[0009] As a further technical solution of this utility model, the wall thickness of the quench ring downpipe is 8-14mm, the front end of the quench ring downpipe is inserted 30-50mm along the center line inside the quench ring quench water distribution pipe, and the width of the quench water annular outlet is 3-8mm.

[0010] As a further technical solution of this utility model, the size of the quench ring inspection port blind cover is DN80, and a flange is installed. The quench ring inspection and cleaning port and the quench ring inspection port blind cover are connected by a flange.

[0011] As a further technical solution of this utility model, the first sealing ring and the second sealing ring have the same thickness, and the thickness of the second sealing ring is 1-3mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the easy-to-clean gasifier quench ring not only realizes the function of rotating flow to form a water film, but also realizes the function of simple structure and easy cleaning, and also realizes the function of good sealing effect;

[0013] (1) By setting up a quench ring quench water distribution pipe, a quench water ring outlet, a quench ring inlet pipe, an inlet pipe flange, and a quench ring downpipe, when in use, the quench ring flange is connected to the partition plate in the gasifier. The high temperature gas passes backward along the quench ring downpipe, and the quench water enters the quench ring quench water distribution pipe along the quench ring inlet pipe. The water flow sprayed by the four sets of quench ring inlet pipes is tangent to the inner ring of the quench ring quench water distribution pipe, so the water flow is spiral and rotates out from the quench water ring outlet in the form of high pressure. The rotated water flow moves forward along the inner wall of the quench ring downpipe, forming a rotating tubular water film on the inner wall of the quench ring downpipe. The gas passes through the tubular water film, which has good encapsulation of the gas. The water film protects the quench ring downpipe while simultaneously cooling the gas. The inlet pipe flange is connected by a thread, which is convenient to replace to adapt to the current quench water pump pipe, thus realizing the function of rotating flow to form a water film.

[0014] (2) By setting up a quench ring maintenance and cleaning port and a blind cover for the quench ring maintenance port, when in use, since the inside of the quench ring quench water distribution pipe and the quench ring downpipe is a cavity, it is easy to clean later. The internal structure of the equipment is smooth, reducing the possibility of scaling and extending the service life. When cleaning, open the blind cover of the quench ring maintenance port on the quench ring maintenance and cleaning port, insert the high-pressure water gun into the quench ring maintenance and cleaning port, and the scale inside the quench ring quench water distribution pipe can be quickly removed by high-pressure water flow rinsing, realizing the function of simple structure and easy cleaning.

[0015] (3) By setting a first sealing ring and a second sealing ring, when in use, the inlet pipe flange and the pump pipe of the quench water filter are connected. The first sealing ring increases the sealing at the connection position, and the second sealing ring increases the sealing at the connection position between the quench ring flange and the partition plate in the gasifier. This can prevent high-temperature gas leakage and achieve a good sealing effect. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model;

[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 3 This is a rear view schematic diagram of the quench ring quench water distribution pipe of this utility model;

[0019] Figure 4 This is a top view of a partial cross-sectional structure of the quenching ring downcomer of this utility model.

[0020] Figure 5 This is a top view cross-sectional diagram of the quench ring downcomer of this utility model.

[0021] In the diagram: 1. Quenching ring flange; 2. Quenching ring flange mounting bolt holes; 3. Quenching ring quench water distribution pipe; 4. Quenching water annular outlet; 5. Quenching ring inlet pipe; 6. Inlet pipe flange; 7. First sealing ring; 8. Quenching ring downcomer; 9. Quenching ring maintenance and cleaning port; 10. Quenching ring maintenance port blind cover; 11. Second sealing ring. Detailed Implementation

[0022] 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.

[0023] Example: Please refer to Figure 1-5 A gasifier quench ring that is easy to clean includes a quench ring flange 1. Multiple sets of quench ring flange mounting bolt holes 2 are opened inside the quench ring flange 1. A quench ring quench water distribution pipe 3 is welded to the rear end of the quench ring flange 1. A quench water annular outlet 4 is opened at the rear end of the quench ring quench water distribution pipe 3. Four sets of quench ring inlet pipes 5 are welded to the outside of the quench ring quench water distribution pipe 3. The end of the quench ring inlet pipe 5 is threadedly connected to an inlet pipe flange 6. A first sealing ring 7 is bonded to the outer side of the inlet pipe flange 6. A quench ring downpipe 8 is welded to the rear end of the quench ring quench water distribution pipe 3. A quench ring maintenance and cleaning port 9 is welded to the left and right sides of the quench ring quench water distribution pipe 3 respectively. A quench ring maintenance port blind cover 10 is fixedly connected to the port of the quench ring maintenance and cleaning port 9. A second sealing ring 11 is bonded to the front end of the quench ring flange 1.

[0024] The quench ring inlet pipe 5 is connected to a 7-degree straight pipe via a 45-degree bend along a 45-degree direction. The pipe is welded to the quench ring quench water distribution pipe 3 in the tangential direction of the quench ring quench water distribution pipe 3. The inner diameter of the quench ring inlet pipe 5 is 60-80% of the inner diameter of the quench ring quench water distribution pipe 3. The quench ring flange 1 has a thickness of 60-100mm. The quench ring flange mounting bolt holes 2 pass through the front and rear ends of the quench ring flange 1. The quench ring flange is welded to the top of the quench ring quench water distribution pipe 3. The quench ring quench water distribution pipe 3 is a ring-shaped circular pipe with a 3-8mm notch on the inner side of the lower center line. The quench ring downpipe 8 is inserted 30-50mm along the outer side of the lower center line of the quench ring quench water distribution pipe 3 and is welded and fixed to the quench ring quench water distribution pipe 3 on the outer side. The wall thickness of the quench ring downpipe 8 is 8-14mm. The notch on the inner side of the lower center line of the quench ring quench water distribution pipe 3 is the quench water annular outlet 4. The water flow rotates to form a water film, which protects the pipe while also achieving a cooling effect.

[0025] There are two ways to install the quench ring. The quench ring quench water main distribution pipe 3, the inlet pipe 5, and the downcomer 8 are made into a whole and are supported by the quench ring quench water main distribution pipe. It can be welded to the installation flange to achieve flange connection, or it can be directly welded.

[0026] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, quench water enters the quench water distribution pipe 3 of the quench ring along the quench ring inlet pipe 5. The water jets from the four sets of quench ring inlet pipes 5 are tangent to the inner ring of the quench ring distribution pipe 3, so the water flow is spiral and exits from the quench water annular outlet 4 in the form of high pressure. The spiraling water flows along the inner wall of the quench ring downcomer 8, forming a rotating tubular water film on the inner wall of the quench ring downcomer 8. The gas passes through the tubular water film, which has good gas encapsulation. While protecting the quench ring downcomer 8, the water film also cools the gas simultaneously. The inlet pipe flange 6 is connected by threads, which makes it easy to replace and adapt to the current quench water pipe.

[0027] The quench ring inspection port blind cover 10 is DN80 in size and is equipped with a flange. The quench ring inspection and cleaning port 9 and the quench ring inspection port blind cover 10 are connected by flanges for easy cleaning and descaling.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, since the quench ring quench water distribution pipe 3 and the quench ring downpipe 8 are hollow, they are easy to clean later. The internal structure of the equipment is smooth, which reduces the possibility of scaling and extends the service life. When cleaning, open the blind cover 10 of the quench ring inspection port 9, insert the high-pressure water gun into the quench ring inspection port 9, and the scale inside the quench ring quench water distribution pipe 3 can be quickly removed by flushing with high-pressure water.

[0029] The first sealing ring 7 and the second sealing ring 11 have the same thickness, and the second sealing ring 11 has a thickness of 1-3mm, resulting in a good sealing effect.

[0030] Specifically, such as Figure 1 and Figure 2 As shown, the inlet flange 6 connects to the main pipe of the quench water filter, and the connection point has a first sealing ring 7 to enhance the seal. The connection point between the quench ring flange 1 and the partition plate in the gasifier has a second sealing ring 11 to enhance the seal and prevent high-temperature gas leakage.

[0031] Working principle: In use, the quench ring flange 1 is first connected to the partition plate in the gasifier. High-temperature gas flows backward along the quench ring downcomer 8. Quenching water enters the quench ring quench water distribution pipe 3 along the quench ring inlet pipe 5. The water jets from the four sets of quench ring inlet pipes 5 are tangent to the inner ring of the quench ring quench water distribution pipe 3, so the water flows in a spiral shape and exits from the quench water annular outlet 4 at high pressure. The spiraling water flows along the inner wall of the quench ring downcomer 8, forming a rotating tubular water film on the inner wall of the quench ring downcomer 8. The gas passes through the tubular water film, which has good gas encapsulation. While protecting the quench ring downcomer 8, the water film also cools the gas simultaneously. The inlet pipe flange 6 is connected by threads, which makes it easy to replace and adapt to the current quench water pump pipe. Because the quench ring quench water distribution pipe 3 and the quench ring downcomer pipe 8 have a hollow interior, cleaning is simple, reducing the equipment's structural area, minimizing scaling, and extending its service life. During cleaning, the blind cover 10 of the quench ring inspection port 9 is opened, and a high-pressure water gun is inserted into the quench ring inspection port 9. High-pressure water flushing quickly removes scale from the inside of the quench ring quench water distribution pipe 3. The inlet pipe flange 6 connects to the main pipe of the quench water filter, with a first sealing ring 7 at the connection point for enhanced sealing. A second sealing ring 11 further enhances the seal at the connection point between the quench ring flange 1 and the partition plate in the gasifier, preventing high-temperature gas leakage.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gasifier quench ring that facilitates cleaning, comprising a quench ring flange (1), characterized in that: The interior of the quench ring flange (1) has multiple sets of quench ring flange mounting bolt holes (2). The quench ring quench water distribution pipe (3) is welded to the rear end of the quench ring flange (1). The quench ring quench water distribution pipe (3) has a quench water annular outlet (4) at the rear end. The quench ring quench water distribution pipe (3) has four sets of quench ring inlet pipes (5) welded to the outside. The end of the quench ring inlet pipe (5) is threaded with an inlet pipe flange (6). The outer side of the inlet pipe flange (6) is bonded with a first sealing ring (7). The rear end of the quench ring quench water distribution pipe (3) is welded with a quench ring downpipe (8). The left and right sides of the quench ring quench water distribution pipe (3) are respectively welded with quench ring maintenance and cleaning ports (9). The port of the quench ring maintenance and cleaning port (9) is fixedly connected with a quench ring maintenance port blind cover (10). The front end of the quench ring flange (1) is bonded with a second sealing ring (11).

2. A quenched ring for a gasifier according to claim 1, wherein: The quench ring inlet pipe (5) is connected to a 7-degree straight pipe through a 45-degree bend along a 45-degree direction and welded to the quench ring quench water distribution pipe (3) in the tangential direction of the quench ring quench water distribution pipe (3). The inner diameter of the quench ring inlet pipe (5) is 60-80% of the inner diameter of the quench ring quench water distribution pipe (3).

3. The gasifier quench ring for easy cleaning according to claim 1, characterized in that: The thickness of the quench ring flange (1) is 60-100mm, and the mounting bolt holes (2) of the quench ring flange pass through the front and rear ends of the quench ring flange (1).

4. The gasifier quench ring for easy cleaning according to claim 1, characterized in that: The wall thickness of the quench ring downpipe (8) is 8-14mm. The front end of the quench ring downpipe (8) is inserted 30-50mm along the center line inside the quench ring quench water distribution pipe (3). The width of the quench water annular outlet (4) is 3-8mm.

5. The gasifier quench ring for easy cleaning according to claim 1, characterized in that: The quench ring maintenance port blind cover (10) is DN80 in size and is equipped with a flange. The quench ring maintenance cleaning port (9) and the quench ring maintenance port blind cover (10) are connected by a flange.

6. The gasifier quench ring for easy cleaning according to claim 1, characterized in that: The first sealing ring (7) and the second sealing ring (11) have the same thickness, and the thickness of the second sealing ring (11) is 1-3mm.

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