Pulverized coal distributor of gasification furnace

Abstract

The utility model relates to the technical field of gasification furnaces, in particular to a gasification furnace pulverized coal distributor which comprises a conical cover, a cylinder is arranged on the conical cover in a communicated mode, a distribution cone is fixedly connected to the bottom wall of the cylinder, a plurality of outlets are formed in the circumference of the inner wall of the cylinder at equal intervals, and the outlets are all communicated with pulverized coal outlet pipes. The plurality of powder outlet pipes are fixedly connected to the cylinder, the plurality of powder outlet pipes are of arc-shaped structures, and an air supply mechanism is arranged on the cylinder. Air can be mixed into pulverized coal, it is guaranteed that the pulverized coal and oxygen can be fully mixed at the top of the furnace, oxygen-enriched gasification reaction can be better carried out, and sufficient combustion of the pulverized coal is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of gasifier technology, and in particular to a pulverized coal distributor for a gasifier. Background Technology

[0002] The pulverized coal distributor in a gasifier is a crucial piece of equipment. Its main function is to evenly distribute pulverized coal within the furnace to ensure the uniformity and efficiency of the gasification reaction. Existing distributors distribute pulverized coal by guiding it through multiple branch pipes. However, this results in the pulverized coal piling up, hindering mixing with oxygen. Consequently, insufficient oxygen during combustion negatively impacts the completeness of the combustion process. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where the falling powder tends to pile up, hindering the mixing of powder with oxygen and thus affecting the completeness of powder combustion. Therefore, this invention proposes a pulverized coal distributor for a gasifier.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A coal powder distributor for a gasifier is designed, comprising a conical shroud, a cylindrical tube connected to the conical shroud, a distribution cone fixedly connected to the bottom wall of the cylindrical tube, multiple outlets evenly spaced on the inner wall of the cylindrical tube, each of the multiple outlets being connected to a coal powder outlet pipe, the multiple coal powder outlet pipes being fixedly connected to the cylindrical tube, the multiple coal powder outlet pipes having an arc-shaped structure, and an air supply mechanism being provided on the cylindrical tube.

[0006] Preferably, the air supply mechanism includes a fixed cylinder, which is fixed on the cylindrical body. Multiple connecting pipes are connected to the fixed cylinder, and each of the multiple connecting pipes is connected to an air outlet pipe. The air outlet pipe is arc-shaped and fixed on the powder outlet pipe. An air inlet pipe is connected to the fixed cylinder.

[0007] Preferably, the number of the plurality of powder outlet tubes is six.

[0008] Preferably, the fixed cylinder includes a housing, which is fixedly connected to the cylinder, and the housing is connected to a plurality of the connecting pipes, and a connecting cap is threaded onto the housing.

[0009] Preferably, a fixing ring is fixedly connected to the cylinder, and the fixing ring has multiple fixing holes evenly spaced around its circumference.

[0010] Preferably, a wear-resistant ceramic layer is provided on both the bottom wall of the powder outlet pipe and the surface of the distribution cone.

[0011] The pulverized coal distributor for a gasifier proposed in this utility model has the following advantages: it distributes the pulverized coal through a distribution cone, discharges it from multiple outlets, rotates through the pulverized coal outlet pipe, and enters the furnace, which is beneficial to the dispersion of pulverized coal. At the same time, in conjunction with the air supply mechanism, it is beneficial to mix air into the pulverized coal, ensuring that the pulverized coal and oxygen can be fully mixed at the top of the furnace, thereby better conducting the oxygen-enriched gasification reaction and promoting the complete combustion of pulverized coal. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a coal powder distributor for a gasifier proposed in this utility model;

[0013] Figure 2 This is a perspective view of a coal powder distributor for a gasifier proposed in this utility model;

[0014] Figure 3 This is a three-dimensional cross-sectional view of a coal powder distributor for a gasifier proposed in this utility model.

[0015] In the diagram: 1. Conical shroud; 2. Fixing ring; 3. Cylinder; 4. Powder outlet pipe; 5. Air inlet pipe; 6. Air outlet pipe; 7. Connecting pipe; 8. Distribution cone; 9. Outlet; 10. Connecting cover; 11. Shell. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example 1: Refer to Figure 1-3 A coal powder distributor for a gasifier includes a conical shroud 1, a cylindrical tube 3 connected to the conical shroud 1, a distribution cone 8 fixedly connected to the bottom wall of the cylindrical tube 3, and multiple outlets 9 evenly spaced around the inner wall of the cylindrical tube 3. Each outlet 9 is connected to a coal powder outlet pipe 4, which is rectangular. There are six coal powder outlet pipes 4, fixedly connected to the cylindrical tube 3, and the pipes are arc-shaped. An air supply mechanism is provided on the cylindrical tube 3. Coal powder enters the conical shroud 1 through a feeder, then enters the cylindrical tube 3, is distributed by the distribution cone 8, and is discharged from the multiple outlets 9. The coal powder then rotates through the outlet pipes 4 and enters the furnace, facilitating the dispersion of the coal powder. Simultaneously, the air supply mechanism helps to mix air into the coal powder, ensuring thorough mixing of coal powder and oxygen at the furnace top, thus promoting better oxygen-enriched gasification and ensuring complete combustion of the coal powder.

[0018] The air supply mechanism includes a fixed cylinder, which is fixed on the cylindrical cylinder 3. Multiple connecting pipes 7 are connected to the fixed cylinder, and each of the multiple connecting pipes 7 is connected to an air outlet pipe 6. One end of the air outlet pipe 6 is closed. The air outlet pipe 6 is arc-shaped and fixed to the coal powder outlet pipe 4. An air inlet pipe 5 is connected to the fixed cylinder. The air inlet pipe 5 is connected to an air pump. The air pump draws air into the multiple connecting pipes 7 and discharges it through the air outlet pipe 6, acting on the rotating coal powder.

[0019] A fixing ring 2 is fixedly connected to the cylinder 3. The fixing ring 2 has multiple fixing holes at equal intervals around its circumference. The fixing ring 2 is installed on a fixed object by using bolts to fix the device.

[0020] During operation, pulverized coal enters the conical hood 1 through the pulverizer, then enters the cylinder 3, is distributed by the distribution cone 8, and is discharged from multiple outlets 9. It is then discharged through the pulverized coal discharge pipe 4 and enters the furnace. Air is drawn into multiple connecting pipes 7 by the air pump and discharged through the air outlet pipe 6. This air acts on the pulverized coal being discharged, mixing the air into the pulverized coal and ensuring that the pulverized coal and oxygen are fully mixed at the top of the furnace.

[0021] Example 2: Refer to Figure 1-3 As another preferred embodiment of this utility model, based on embodiment 1, the fixed cylinder includes a shell 11, which is fixedly connected to the cylinder 3. The shell 11 is connected to multiple connecting pipes 7, and a connecting cover 10 is threaded onto the shell 11. When coal dust enters the fixed cylinder from the air outlet pipe 6 and needs to be cleaned, the connecting cover 10 is rotated to open the fixed cylinder and clean out the incoming powder.

[0022] Example 3: Reference Figure 1-3 As another preferred embodiment of this utility model, based on embodiment 2, a wear-resistant ceramic layer is provided on the bottom wall of the powder outlet pipe 4 and the surface of the distribution cone 8. Since the coal will cause wear on the bottom wall of the powder outlet pipe 4 and the surface of the distribution cone 8 when sliding, the wear-resistant layer enhances the wear resistance and helps to improve the service life of the device.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pulverized coal distributor for a gasifier, comprising a conical shroud (1), characterized in that, A cylinder (3) is connected to the conical cover (1). A distribution cone (8) is fixedly connected to the bottom wall of the cylinder (3). Multiple outlets (9) are evenly spaced on the inner wall of the cylinder (3). Each of the multiple outlets (9) is connected to a powder outlet pipe (4). The multiple powder outlet pipes (4) are fixedly connected to the cylinder (3). The multiple powder outlet pipes (4) have an arc-shaped structure. An air supply mechanism is provided on the cylinder (3).

2. The pulverized coal distributor for a gasifier according to claim 1, characterized in that, The air supply mechanism includes a fixed cylinder, which is fixed on the cylindrical tube (3). Multiple connecting pipes (7) are connected to the fixed cylinder, and air outlet pipes (6) are connected to each of the multiple connecting pipes (7). The air outlet pipes (6) are arc-shaped and fixed on the powder outlet pipe (4). An air inlet pipe (5) is connected to the fixed cylinder.

3. A pulverized coal distributor for a gasifier according to claim 2, characterized in that, The number of the powder outlet tubes (4) is six.

4. A pulverized coal distributor for a gasifier according to claim 2, characterized in that, The fixed cylinder includes a housing (11), which is fixedly connected to the cylinder (3). The housing (11) is connected to a plurality of the connecting pipes (7), and a connecting cap (10) is threaded onto the housing (11).

5. A pulverized coal distributor for a gasifier according to claim 1, characterized in that, A fixing ring (2) is fixedly connected to the cylinder (3), and multiple fixing holes are equally spaced around the circumference of the fixing ring (2).

6. A pulverized coal distributor for a gasifier according to claim 1, characterized in that, The bottom wall of the powder outlet pipe (4) and the surface of the distribution cone (8) are both provided with a wear-resistant ceramic layer.

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