Cooling burner of gasification furnace

Abstract

The utility model relates to the technical field of gasification furnace burners, in particular to a gasification furnace cooling burner which comprises a burner body and a cooling unit. The cooling unit comprises a water inlet pipe, a water outlet pipe and a cooling coil pipe connected between the water inlet pipe and the water outlet pipe, the water inlet pipe and the water outlet pipe are both arranged vertical to the axis of the burner body, the water inlet pipe is located below the water outlet pipe, and the cooling coil pipe is arranged at the discharging end of the burner body in a sleeving mode; the water inlet pipe and the water outlet pipe are both perpendicular to the burner body, and the water inlet pipe is arranged below the water outlet pipe, so that the water inlet pipe can be filled with cooling water when the cooling water flows, air is prevented from being mixed into the water inlet pipe, flow reduction is avoided, and the cooling effect of the cooling water is guaranteed to reach the expected effect; meanwhile, obstruction of air to flowing of cooling water is avoided, the flowing speed of the cooling water is increased, the cooling effect of the cooling water is improved, the service life of the cooling burner of the gasification furnace is guaranteed, and actual use requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of gasifier burner technology, specifically to a gasifier cooling burner. Background Technology

[0002] Currently, in the field of coal gasification, coal-water slurry gasifiers occupy half the market. The core equipment is the gasifier burner, which is used to input oxygen and other materials such as coal slurry into the gasifier for reaction, thereby producing coal-water gas.

[0003] However, due to the high internal temperature of the gasifier, which is between 1200℃ and 1300℃ for a long time, the discharge end of the gasifier burner is in a high-temperature region for a long time. Therefore, it is necessary to cool the discharge end of the gasifier burner. For example, Chinese utility model patent application number 201822092720.1 discloses a water-coal slurry gasifier burner.

[0004] In order to reduce the area occupied, the water inlet and outlet pipes of the existing gasifier are set horizontally. This causes air to be mixed into the cooling water during the water inlet and outlet. On the one hand, it reduces the amount of cooling water entering the gasifier and reduces the cooling effect. On the other hand, it reduces the flow rate of the cooling water and reduces heat exchange, thereby further reducing the cooling efficiency. As a result, the gasifier burner has poor cooling effect, reduced service life, and cannot meet the actual use requirements. Utility Model Content

[0005] The purpose of this invention is to provide a gasifier cooling burner to solve the technical problem of reduced lifespan caused by poor cooling effect in current gasifier cooling burners.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gasifier cooling burner includes a burner body and a cooling unit;

[0008] The cooling unit includes an inlet pipe, an outlet pipe, and a cooling coil connected between the inlet pipe and the outlet pipe. Both the inlet pipe and the outlet pipe are vertically arranged with respect to the axis of the burner body. The inlet pipe is located below the outlet pipe, and the cooling coil is sleeved on the discharge end of the burner body.

[0009] Further defining the burner body, it comprises an oxygen-enriched air inlet section, a coal slurry inlet section, an external oxygen inlet section, and a discharge section connected in sequence, with the cooling coil sleeved at the discharge end of the discharge section.

[0010] Further specified, the number of turns of the cooling coil is 5 to 8.

[0011] Further specified, the discharge end of the discharge section is equipped with a burner, the discharge section is connected to the burner through a water cover chamber, and the cooling coil is sleeved on the outside of the water cover chamber.

[0012] Further specified, the outer diameter of the water cover chamber is 150mm.

[0013] Further specified, the discharge section is provided with a gasifier connecting flange, the cooling coil is located on one side of the gasifier connecting flange, and the water inlet pipe and water outlet pipe are both located on the other side of the gasifier connecting flange. The water inlet pipe and water outlet pipe both pass through the gasifier connecting flange and are connected to the cooling coil.

[0014] Further, both the inlet and outlet water pipes are equipped with reinforcing ribs, and both the inlet and outlet water pipes are connected to the gasifier flange via the reinforcing ribs.

[0015] Furthermore, both the inlet and outlet water pipes are equipped with backup water inlets, and both the inlet and outlet water pipes are connected to the backup water inlets via welded ball valves.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model arranges both the inlet and outlet pipes perpendicular to the burner body, with the inlet pipe positioned below the outlet pipe. This ensures that the cooling water fills the inlet pipe during flow, preventing air from entering and reducing flow rate, thus guaranteeing the desired cooling effect. Simultaneously, it reduces air obstruction to the cooling water flow, increases the flow rate, enhances the cooling effect, extends the service life of the gasifier burner, and meets practical application requirements.

[0018] 2. This utility model improves the actual cooling effect by adjusting the number of turns of the cooling coil and the size of the water cover chamber, thereby further ensuring the service life of the gasifier cooling burner.

[0019] 3. This utility model improves the structural strength of the water inlet pipe and water outlet pipe when they are vertically installed by setting reinforcing ribs, so as to ensure their stable and reliable use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the burner of this utility model;

[0022] In the diagram: 10-burner body; 11-oxygen-enriched air inlet section; 12-coal slurry inlet section; 13-external oxygen inlet section; 14-discharge section; 15-burner; 20-cooling unit; 21-water inlet pipe; 22-cooling coil; 23-water outlet pipe; 30-gasifier connecting flange; 40-reinforcing rib; 50-spare water inlet pipe; 60-welded ball valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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] Example 1

[0025] refer to Figure 1 This embodiment provides a gasifier cooling burner, including a burner body 10 and a cooling unit 20. The cooling unit 20 is sleeved on the discharge end of the burner body 10. The water inlet of the cooling unit 20 is vertically arranged downwards, and the water outlet of the cooling unit 20 is vertically arranged upwards, thereby realizing the flow of cooling water from bottom to top. This avoids the presence of air inside the cooling unit 20 due to the horizontal arrangement of the water inlet / outlet of the cooling unit 20, which would affect the cooling effect.

[0026] Specifically, the cooling unit 20 includes an inlet pipe 21, a cooling coil 22, and an outlet pipe 23 connected in sequence. Both the inlet pipe 21 and the outlet pipe 23 can be L-shaped. The inlet end of the inlet pipe 21 faces downward and the outlet end of the outlet pipe 23 faces upward. The inlet pipe 21 is located below the outlet pipe 23. The long side of the inlet pipe 21 and the long side of the outlet pipe 23 are both perpendicular to the axis of the burner body 10, and the short side of the inlet pipe 21 and the short side of the outlet pipe 23 are both in the same direction as the axis of the burner body 10.

[0027] This allows the cooling water to fill the inlet pipe 21 under its own weight after entering, and the cooling water to fill the cooling coil 22, thereby increasing the cooling water volume and flow rate, improving the cooling effect, and ensuring the service life of the gasifier cooling burner.

[0028] To further explain, the burner body 10 includes an oxygen-enriched air inlet section 11, a coal slurry inlet section 12, an external oxygen inlet section 13, and a discharge section 14 connected in sequence. The discharge section 14 extends into the gasifier to discharge material. At this time, the cooling coil 22 is sleeved on the outside of the discharge section 14, and the cooling coil 22 is close to the discharge end of the discharge section 14 for cooling it.

[0029] refer to Figure 2 The discharge end of the discharge section 14 is equipped with a burner 15. The discharge section 14 is connected to the burner 15 through a water cover chamber. At this time, the cooling coil 22 is installed outside the water cover chamber and is located between the discharge section 14 and the burner 15 to improve the cooling efficiency of the burner 15.

[0030] In practical use, although thickening the water cover chamber can increase its structural strength and improve its service life, it increases the heat-receiving area and reduces the cooling efficiency of the cooling coil 22. On the other hand, if the outer diameter of the water cover chamber is too low, it will reduce the structural strength of the water cover chamber and reduce its service life. Therefore, the outer diameter of the water cover chamber is preferably selected as 150mm.

[0031] Similarly, if the number of turns of the cooling coil 22 is too large, the flow rate of the cooling water will decrease due to increased resistance, and the cooling water will not be able to carry away the heat in time after being heated, thus reducing the cooling effect. If the number of turns of the cooling coil 22 is too small, the cooling water will not be able to absorb enough heat before flowing away, which will also reduce the cooling efficiency. Therefore, it is preferable that the number of turns of the cooling coil 22 is 5 to 8, and more preferably 7.5.

[0032] To further explain, in order to ensure that the burner body 10 can be stably connected to the gasifier, a gasifier connecting flange 30 is installed on the discharge section 14, and the discharge section 14 is connected to the outside of the gasifier through the gasifier connecting flange 30.

[0033] The gasifier connecting flange 30 is located between the external oxygen inlet section 13 and the cooling coil 22, and the water inlet pipe 21 and the water outlet pipe 23 are located between the external oxygen inlet section 13 and the gasifier connecting flange 30.

[0034] At this time, the cooling coil 22 is located on one side of the gasifier connecting flange 30, and the water inlet pipe 21 and the water outlet pipe 23 both pass through the gasifier connecting flange 30 and are connected to the cooling coil 22.

[0035] To further explain, since both the inlet pipe 21 and the outlet pipe 23 are L-shaped structures located on the outside of the discharge section 14, in order to improve their structural strength and prevent the cooling water from impacting and causing them to shake, thus reducing their service life, reinforcing ribs 40 are installed on both the inlet pipe 21 and the outlet pipe 23.

[0036] One end of the reinforcing rib 40 is connected to the gasifier connecting flange 30, and the other end of the reinforcing rib 40 is connected to the water inlet end of the corresponding water inlet pipe 21 and the water outlet end of the water outlet pipe 23, thereby improving the structural strength of the water inlet pipe 21 and the water outlet pipe 23, increasing their service life, and ensuring stable and reliable use.

[0037] The reinforcing rib 40 can be either channel steel or I-beam.

[0038] To ensure the cooling coil 22 is unobstructed before use, a water test can be performed on the cooling coil 22 in advance. Since the inlet pipe 21 and outlet pipe 23 are already connected to the cooling water source during installation and are not easy to disassemble, a spare water inlet pipe 50 is installed on both the inlet pipe 21 and the outlet pipe 23. At this time, a welded ball valve 60 is installed on the inlet pipe 21, and the welded ball valve 60 is located between the inlet end of the inlet pipe 21 and the spare water inlet pipe 50. Similarly, a welded ball valve 60 is also installed on the outlet pipe 23, and a welded ball valve 60 is installed between the welded ball valve 60 and the outlet end of the outlet pipe 23.

[0039] Water is supplied to the cooling coil 22 via the backup water inlet pipe 50 and the temporary water supply pipe, and the two welding ball valves 60 are closed. When the water is supplied for the formal time, the backup water inlet pipe 50 is closed and the welding ball valves 60 are opened, thus the formal operation begins.

[0040] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gasifier cooling burner, characterized in that, Includes burner body (10) and cooling unit (20); The cooling unit (20) includes an inlet pipe (21), an outlet pipe (23), and a cooling coil (22) connecting the inlet pipe (21) and the outlet pipe (23). The inlet pipe (21) and the outlet pipe (23) are both vertically arranged with respect to the axis of the burner body (10). The inlet pipe (21) is located below the outlet pipe (23). The cooling coil (22) is sleeved on the discharge end of the burner body (10). Both the inlet pipe (21) and the outlet pipe (23) are equipped with spare water inlet pipes (50), and both the inlet pipe (21) and the outlet pipe (23) are connected to the spare water inlet pipes (50) through welded ball valves (60); The burner body (10) includes an oxygen-enriched air intake section (11), a coal slurry inlet section (12), an external oxygen intake section (13), and a discharge section (14) connected in sequence. The discharge end of the discharge section (14) is equipped with a burner (15). The discharge section (14) is connected to the burner (15) through a water cover chamber. The cooling coil (22) is sleeved on the outside of the water cover chamber and located between the discharge section (14) and the burner (15).

2. The gasifier cooling burner according to claim 1, characterized in that, The cooling coil (22) has 5 to 8 turns.

3. The gasifier cooling burner according to claim 2, characterized in that, The discharge end of the discharge section (14) is equipped with a burner (15), and the discharge section (14) is connected to the burner (15) through the water cover chamber. The cooling coil (22) is sleeved on the outside of the water cover chamber.

4. The gasifier cooling burner according to claim 3, characterized in that, The outer diameter of the water cover chamber is 150 mm.

5. The gasifier cooling burner according to any one of claims 2 to 4, characterized in that, The discharge section (14) is provided with a gasifier connecting flange (30), the cooling coil (22) is located on one side of the gasifier connecting flange (30), the water inlet pipe (21) and the water outlet pipe (23) are both located on the other side of the gasifier connecting flange (30), and the water inlet pipe (21) and the water outlet pipe (23) both pass through the gasifier connecting flange (30) and are connected to the cooling coil (22).

6. The gasifier cooling burner according to claim 5, characterized in that, Both the inlet pipe (21) and the outlet pipe (23) are equipped with reinforcing ribs (40), and both the inlet pipe (21) and the outlet pipe (23) are connected to the gasifier connecting flange (30) through the reinforcing ribs (40).

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