Gasification furnace slag port necking structure

Abstract

This utility model relates to the field of gasification furnace slag inlet technology, and in particular to a gasification furnace slag inlet narrowing structure. Its features include two sets of connecting rods arranged symmetrically about their axes within the original slag inlet. These two sets of connecting rods are jointly fixedly connected to multiple sets of clamps evenly distributed longitudinally. The outer edge of each clamp is fixedly connected to the inner wall of the original slag inlet. Each clamp is coaxially fitted with a narrowing sleeve. Multiple sets of guide grooves evenly distributed around the axis are respectively opened on the inner wall of each clamp. Multiple sets of guide plates slidably connected to the guide grooves are fixedly connected to the outer edge of the narrowing sleeve. Multiple sets of sliding guide components that cooperate with the guide plates are fixedly connected to the bottom of the inner wall of the original slag inlet. A refractory lining is evenly laid on the inner wall of the narrowing sleeve. A flange that is detachably connected to the original slag inlet is integrally and coaxially arranged at the front end of the narrowing sleeve.

Description

Technical Field

[0001] This utility model relates to the field of gasification furnace slag inlet technology, and in particular to a gasification furnace slag inlet narrowing structure. Background Technology

[0002] As a relatively advanced and popular fluidized bed gasification process, the aerospace furnace is a co-current gasification process. It uses a gasifying agent to carry coal powder with a particle size of less than 90μm into the gasifier. The coal powder undergoes combustion and gasification reactions with the gasifying agent at a temperature higher than its ash melting point, and the ash is discharged from the gasifier in liquid form.

[0003] Our plant uses HT-L pulverized coal pressurized gasification technology in its production process. During operation, unstable pressure differential at the slag outlet and slag blockage frequently occur. To address this, during the technical upgrade, our plant designed the slag outlet diameter of the second-phase aerospace furnace to be enlarged to Φ650 mm. However, this led to a significant problem: the effective gas content in the crude gas produced by the second-phase aerospace furnace was consistently lower than that of the first-phase furnace. Based on theoretical analysis and practical production conditions, our plant decided to implement a diameter reduction modification on the slag outlet of the second-phase aerospace furnace. Practice showed that after reducing the diameter of the slag outlet to Φ550 mm, coupled with optimized coal blending and proportioning, not only did the effective gas content in the crude gas increase by approximately 2%, but the slag outlet blockage problem was also largely resolved, achieving the expected goals of the technical upgrade. Therefore, this application proposes a gasifier diameter reduction structure to solve the existing gasifier slag outlet blockage problem and increase the effective gas content in the crude gas. Utility Model Content

[0004] To address the above situation and overcome the shortcomings of existing technologies, this utility model provides a gasification furnace slag inlet narrowing structure. The technical solution it provides includes a raw slag inlet, characterized in that two sets of connecting rods are arranged symmetrically about their axes within the raw slag inlet. The two sets of connecting rods are jointly fixedly connected to multiple sets of clamps evenly distributed longitudinally. The outer edge of each clamp is fixedly connected to the inner wall of the raw slag inlet. Each clamp is coaxially and movably fitted with a narrowing sleeve. Multiple sets of guide grooves evenly distributed around the axis are respectively opened on the inner wall of each clamp. Multiple sets of guide plates slidably connected to the guide grooves are fixedly connected to the outer edge of the narrowing sleeve. Multiple sets of sliding guide components that cooperate with the guide plates are fixedly connected to the bottom of the inner wall of the raw slag inlet. A refractory lining is evenly laid on the inner wall of the narrowing sleeve. A flange that is detachably connected to the raw slag inlet is integrally and coaxially arranged at the front end of the narrowing sleeve.

[0005] Preferably, each of the sliding guide components includes a bracket fixedly connected to the inner wall of the original slag outlet, the bracket being rotatably connected to a horizontal shaft, and the horizontal shaft being coaxially fixedly connected to a guide pulley.

[0006] Preferably, the front end of the slag outlet is provided with a connection hole for use with a flange, and the connection hole is threaded with a bolt that abuts against the flange.

[0007] The beneficial effects of this utility model are:

[0008] 1. In the process of using this application, in order to improve the clogging problem of the original slag opening and increase the effective gas content in the crude gas, a clamp is arranged in the original slag opening, and a narrowing sleeve is installed through the clamp. The inner wall of the narrowing sleeve is evenly lined with refractory lining, thereby forming a new slag opening and completing the narrowing technical modification of the original slag opening. Practice shows that after the slag opening diameter is reduced to Φ550 mm (the original slag opening diameter is Φ650 mm), and with the optimization of coal blending and blending, not only is the effective gas content in the crude gas increased by about 2%, but the clogging problem of the aerospace furnace slag opening is also basically solved, and the technical modification has achieved the expected purpose.

[0009] 2. This application connects multiple clamps via connecting rods to ensure the coaxiality of the clamps, thus facilitating the insertion of the necking sleeve into the clamps. When inserting the necking sleeve into the clamps, it is guided by a guide plate and guide groove, and further aided by a sliding guide component, making it easy to insert the necking sleeve into the clamp within the original slag opening. Afterwards, water-resistant bricks are laid on the necking sleeve to complete the necking modification. This application has a simple structure, is easy to use, and is highly practical. Attached Figure Description

[0010] Figure 1 This is a first-person perspective three-dimensional sectional view of the present invention.

[0011] Figure 2 This is an enlarged view of region A in the first-view perspective stereoscopic sectional view of this utility model.

[0012] Figure 3 This is a partial stereoscopic view of the present invention from a second perspective.

[0013] Figure 4 This is a partial stereoscopic view of the present invention from a third-person perspective.

[0014] Figure 5 This is a fourth-angle perspective sectional view of the present invention.

[0015] Figure 6 This is an enlarged view of region B in the fifth-view perspective sectional view of this utility model.

[0016] Figure 7 This is a sixth-angle perspective view of the present invention.

[0017] Figure Labels

[0018] 1. Original slag inlet, 2. Connecting rod, 3. Clamp, 4. Narrow sleeve, 5. Guide groove, 6. Guide plate, 7. Sliding guide, 8. Refractory lining, 9. Flange, 11. Bracket, 12. Horizontal shaft, 13. Guide pulley, 14. Connecting hole, 15. Bolt. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-7 The specific embodiments of this utility model will be described in further detail.

[0020] In the first embodiment, the technical solution is as follows: In order to improve the clogging problem of the original slag opening 1 and increase the effective gas content in the crude gas, a clamp 3 is arranged in the original slag opening 1, and a narrowing sleeve 4 is installed through the clamp 3. The inner wall of the narrowing sleeve 4 is evenly covered with a refractory lining 8, thereby forming a new slag opening and completing the narrowing technical modification of the original slag opening 1. Practice shows that after the slag opening diameter is changed to Φ550 mm (the original slag opening 1 diameter is Φ650 mm), and with the optimization of coal blending and mixing, not only is the effective gas content in the crude gas increased by about 2%, but the clogging problem of the aerospace furnace slag opening is also basically solved, and the technical modification has achieved the expected purpose. This application connects multiple clamps 3 via connecting rod 2 to ensure the coaxiality of the clamps 3, thereby facilitating the insertion of the necking sleeve 4 into the clamps 3. When inserting the necking sleeve 4 into the clamps 3, it can be guided by the guide plate 6 and the guide groove 5. At the same time, with the assistance of the sliding guide 7, it is easy to insert the necking sleeve 4 into the clamps 3 in the original slag opening 1. After that, water-resistant bricks are laid on the necking sleeve 4 to complete the necking modification. This application has a simple structure, is easy to use, and is highly practical.

[0021] In Example 2, based on Example 1, specifically, in this application, the clamp 3 is connected by the connecting rod 2 to ensure coaxiality after being installed into the original slag opening 1. After the clamp 3 is fixedly installed on the inner wall of the original slag opening 1, a sliding guide 7 is also arranged to facilitate the introduction of the constriction sleeve 4 into the clamp 3. The sliding guide 7 is connected to the guide pulley 13 through the bracket 11 and the horizontal shaft 12. The guide pulley 13 and the guide groove 5 on the lower side of the clamp 3 are located on the same straight line so that the guide plate 6 can contact the guide pulley 13 and the guide groove 5 simultaneously. Then, during the process of introducing the constriction sleeve 4 into the clamp 3, the guide plate 6 on the outer edge of the constriction sleeve 4 corresponds to the guide groove 5 on the clamp 3. Under the constraint of the guide groove 5 and the guide plate 6, the constriction sleeve 4 is pushed into the original slag opening 1. During the pushing process, the guide plate 6 is also supported and guided by the guide pulley 13, which can greatly reduce the friction and make it easier to introduce the constriction sleeve 4 into the original slag opening 1. After the constriction sleeve 4 is fully inserted into the original slag port 1, the flange 9 abuts against the front end of the original slag port 1, and the bolt 15 is screwed into the connection hole 14 for tightening.

Claims

1. A gasification furnace slag inlet narrowing structure, comprising a raw slag inlet (1), characterized in that, Two sets of connecting rods (2) are arranged symmetrically about their axis inside the original slag opening (1). The two sets of connecting rods (2) are fixedly connected to multiple sets of clamps (3) evenly distributed along the longitudinal direction. The outer edge of each clamp (3) is fixedly connected to the inner wall of the original slag opening (1). Each clamp (3) is coaxially fitted with a constriction sleeve (4). Multiple sets of guide grooves (5) are opened on the inner wall of each clamp (3) evenly distributed around its axis. Multiple sets of guide plates (6) that are slidably connected to the guide grooves (5) are fixedly connected to the outer edge of the constriction sleeve (4). Multiple sets of sliding guide parts (7) that cooperate with the guide plates (6) are fixedly connected to the bottom of the inner wall of the original slag opening (1). The inner wall of the constriction sleeve (4) is evenly covered with a refractory lining (8). The front end of the constriction sleeve (4) is integrally and coaxially arranged with a flange (9) that can be detachably connected to the original slag opening (1).

2. The gasification furnace slag inlet narrowing structure according to claim 1, characterized in that, Each of the sliding guide components (7) includes a bracket (11) fixedly connected to the inner wall of the original slag opening (1), the bracket (11) is rotatably connected to a horizontal shaft (12), and the horizontal shaft (12) is coaxially fixedly connected to a guide pulley (13).

3. The gasification furnace slag inlet narrowing structure according to claim 1, characterized in that, The front end of the raw slag inlet (1) is provided with a connecting hole (14) for use with the flange (9), and the connecting hole (14) is threaded with a bolt (15) that abuts against the flange (9).

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