Burner mounting seat

Abstract

The utility model relates to the technical field of gasification furnaces, in particular to a burner mounting seat, which comprises a support body, and a vertically through mounting channel is arranged in the center of the upper side of the support body. The burner is reasonable and compact in structure, when the burner is used, the end of the burner is installed in the first straight hole section, the first straight hole section, the second straight hole section and the first taper hole section form an inner ring table with the right-trapezoid-shaped section in the supporting body, and after the head of the burner is installed on the upper end face of the inner ring table, a negative pressure space can be formed in the first taper hole section; the furnace lining can be prevented from being damaged during long-time use, the end face of the head of the burner nozzle is effectively prevented from being ablated and damaged by high-temperature gas, over-temperature of a burner nozzle chamber caused by reverse flowing of the high-temperature gas can be prevented, and the service life of the burner nozzle can be prolonged; according to the supporting body, the phenomena that the end face of the burner is damaged due to entrainment of high-temperature gas and the burner is damaged due to oxygen-enriched tempering of the burner chamber caused by slag deposition at a burner opening and shutdown overhaul is caused can be avoided, the operation stability of the burner can be improved, and the maintenance period of the burner can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gasification furnaces and is a burner mounting seat. Background Art

[0002] The burner chamber of the gasifier is composed of four high-chrome bricks, each of which consists of two parts: a horizontal section and an expanded mouth. The burner is installed at the junction of the four high-chrome bricks. When the gasifier operates normally, the slag in the furnace is liquid, and the slag flows downward along the inner wall of the gasifier. After the coal slurry and oxygen are mixed, they are ejected from the burner chamber at high speed and burned in the furnace. Due to the high-temperature gas generated in the furnace, the high-speed gas ejection causes a relative negative pressure in the burner chamber, resulting in a suction effect, causing the high-temperature gas and liquid slag in the furnace to be sucked into the burner chamber, resulting in slag accumulation in the burner chamber and high-temperature gas ablation, thereby damaging the refractory bricks in the burner chamber and the burner end face.

[0003] The existing gasifier burner chamber has a diameter of 235mm, a burner diameter of 113mm, and a 61mm annular gap outside the burner. This design easily causes slag accumulation in the burner chamber, unstable flow field, and high-temperature gas backflow, causing over-temperature tempering in the burner chamber, thereby shortening the service life of the burner. Summary of the invention

[0004] The utility model provides a burner mounting seat, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of unstable flow field in the prior burner mounting seat, backflow of high-temperature gas causing over-temperature tempering in the burner chamber, thereby shortening the service life of the burner and easily causing slag accumulation in the burner chamber.

[0005] The technical solution of the utility model is achieved through the following measures: a burner mounting seat, including a support body, a mounting channel penetrating from top to bottom is provided in the center of the upper side of the support body, the mounting channel includes a first straight hole section, a second straight hole section, a first tapered hole section and a second tapered hole section which are connected in sequence from top to bottom, the diameter of the first straight hole section is larger than the diameter of the second straight hole section, the taper of the second tapered hole section is smaller than the taper of the first tapered hole section, and the diameter of the upper end of the second tapered hole section is the same as the diameter of the lower end of the first tapered hole section.

[0006] The following are further optimizations and / or improvements to the above utility model technical solution:

[0007] The diameter of the second straight hole section may be 62 mm, and the distances between the inner annular surface of the first straight hole section, the inner side of the lower end of the first tapered hole section and the inner annular surface of the first straight hole section are all 90 to 91 mm.

[0008] The depth of the first straight hole section may be 18 to 22 mm, and the distance between the upper end of the second straight hole section and the lower end of the first tapered hole section may be 75 to 85 mm.

[0009] The taper of the first tapered hole section may be 58.6 degrees, and the taper of the second tapered hole section may be 11 degrees.

[0010] The support body may include four refractory bricks fixedly mounted together, each refractory brick is in a fan-shaped ring shape, and each refractory brick has a connecting hole extending vertically on its outer ring surface, and the connecting holes of the four refractory bricks form an installation channel.

[0011] The utility model has a reasonable and compact structure. When in use, the end portion of the burner is installed in the first straight hole section. The first straight hole section, the second straight hole section and the first tapered hole section form an inner ring platform with a right-angled trapezoidal cross-section inside the support body. After the burner head is installed on the upper end surface of the inner ring platform, a negative pressure space can be formed in the first tapered hole section, which can prevent the furnace lining from being damaged during long-term use, effectively prevent the end face of the burner head from being damaged by high-temperature gas ablation, and block the backflow of high-temperature gas to cause overheating of the burner chamber, thereby extending the service life of the burner. The support body of the present application can prevent the high-temperature gas from being sucked in to cause damage to the end face of the burner, and slag accumulation at the burner mouth from causing oxygen-enriched tempering in the burner chamber, resulting in burner damage and shutdown for maintenance. It can improve the safety, stability and maintenance cycle of the burner operation, provide protection for the safe and stable operation of the gasifier, and improve the production efficiency of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a schematic diagram of the front cross-sectional structure of Embodiments 1 to 4 of the present invention.

[0013] Attached Figure 2 It is a bottom view structural schematic diagram of Embodiments 1 to 4 of the present invention.

[0014] The codes in the attached drawings are: 1 is the first straight hole section, 2 is the second straight hole section, 3 is the first tapered hole section, 4 is the second tapered hole section, 5 is the inner ring platform, and 6 is the refractory brick. DETAILED DESCRIPTION

[0015] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0016] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0017] The present invention will be further described below in conjunction with the embodiments and drawings:

[0018] Embodiment 1: As shown in the attached Figure 1 , 2As shown, the burner mounting seat includes a support body, and a mounting channel is provided in the center of the upper side of the support body, which runs through from top to bottom. The mounting channel includes a first straight hole section 1, a second straight hole section 2, a first tapered hole section 3 and a second tapered hole section 4 which are connected in sequence from top to bottom. The diameter of the first straight hole section 1 is larger than the diameter of the second straight hole section 2, the taper of the second tapered hole section 4 is smaller than the taper of the first tapered hole section 3, and the diameter of the upper end of the second tapered hole section 4 is the same as the diameter of the lower end of the first tapered hole section 3.

[0019] When in use, the burner end is installed in the first straight hole section 1, and the first straight hole section 1, the second straight hole section 2 and the first tapered hole section 3 form an inner ring platform 5 with a right-angled trapezoidal cross-section inside the support body. After the burner head is installed on the upper end face of the inner ring platform 5, a negative pressure space can be formed in the first tapered hole section 3, which can prevent the furnace lining from being damaged during long-term use, effectively prevent the end face of the burner head from being damaged by high-temperature gas ablation, and can prevent the high-temperature gas from flowing back and causing the burner chamber to overheat, which can extend the service life of the burner. The support body of the present application can prevent the high-temperature gas from being sucked in and causing damage to the burner end face, and slag accumulation at the burner mouth causing oxygen-enriched tempering in the burner chamber, resulting in burner damage and shutdown for maintenance, which can improve the safety, stability and maintenance cycle of the burner operation, can provide protection for the safe and stable operation of the gasifier, and improve the production efficiency of the entire system.

[0020] The burner mounting seat can be further optimized and / or improved according to actual needs:

[0021] Embodiment 2: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown, the diameter of the second straight hole section 2 is 62 mm, and the distances between the inner annular surface of the first straight hole section 1 and the inner side of the lower end of the first tapered hole section 3 and the inner annular surface of the first straight hole section 1 are all 90 to 91 mm.

[0022] The diameter of the second straight hole section 2 is 62mm, which reduces the diameter of the fire surface of the burner chamber from the original 245mm to 62mm. The distances between the inner annular surface of the first straight hole section 1, the inner side of the lower end of the first tapered hole section 3 and the inner annular surface of the first straight hole section 1 are all 91mm. This can effectively prevent the end face of the burner head from being damaged by high-temperature gas ablation, and can also prevent the high-temperature gas from flowing back and causing the burner chamber to overheat.

[0023] Embodiment 3: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown, the depth of the first straight hole section 1 is 18 to 22 mm, and the distance between the upper end of the second straight hole section 2 and the lower end of the first tapered hole section 3 is 75 to 85 mm.

[0024] The depth of the first straight hole section 1 is 20 mm, which can prevent the burner from colliding with the support body during installation and improve the cooling effect of the burner end face. The depth of the second straight hole section 2 is 30 mm, and the distance between the upper end of the second straight hole section 2 and the lower end of the first tapered hole section 3 is 80 mm. The inner ring platform 5 in the support body can prevent the liquid slag from scouring the furnace lining and avoid corroding the furnace lining after reacting with the furnace lining.

[0025] Embodiment 4: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown, the taper of the first tapered hole section 3 is 58.6 degrees, and the taper of the second tapered hole section 4 is 11 degrees. The support body includes four refractory bricks 6 fixedly mounted together, each refractory brick 6 is in a fan-shaped ring shape, and each refractory brick 6 is provided with a connecting hole that passes through from top to bottom on the outer ring surface, and the connecting holes of the four refractory bricks 6 form an installation channel.

[0026] The taper of the first tapered hole section 3 is 58.6 degrees, and the taper of the second tapered hole section 4 is 11 degrees. This can change the flow direction of the high-temperature gas and liquid slag at the burner mouth, avoid the accumulation of liquid slag at the burner mouth, and avoid the high-temperature gas being sucked back into the burner chamber, thereby ensuring the normal ejection of oxygen and coal slurry, and reducing the erosion and penetration of slag, so that the four refractory bricks 6 can be tightly connected and cast and fired together.

[0027] The use of refractory bricks 6 can significantly improve the operating efficiency and maintenance cycle of the gasifier. The formed inner ring extends the service life of the burner, while also reducing the damage to the refractory bricks caused by high-temperature gas and slag liquid. It can also reduce the temperature in the burner chamber and reduce the damage to the refractory bricks and the inner wall of the furnace body caused by high-temperature gas.

[0028] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A burner mounting seat, characterized in that It includes a support body, and a mounting channel is provided in the center of the upper side of the support body, which passes through from top to bottom. The mounting channel includes a first straight hole section, a second straight hole section, a first tapered hole section and a second tapered hole section which are connected in sequence from top to bottom. The diameter of the first straight hole section is larger than the diameter of the second straight hole section, the taper of the second tapered hole section is smaller than the taper of the first tapered hole section, and the diameter of the upper end of the second tapered hole section is the same as the diameter of the lower end of the first tapered hole section.

2. The burner mounting seat according to claim 1, characterized in that The diameter of the second straight hole section is 62 mm, and the distances between the inner annular surface of the first straight hole section, the inner side of the lower end of the first tapered hole section and the inner annular surface of the first straight hole section are all 90 to 91 mm.

3. The burner mounting seat according to claim 1 or 2, characterized in that The depth of the first straight hole section is 18 to 22 mm, and the distance between the upper end of the second straight hole section and the lower end of the first tapered hole section is 75 to 85 mm.

4. The burner mounting seat according to claim 1 or 2, characterized in that The taper of the first tapered hole section is 58.6 degrees, and the taper of the second tapered hole section is 11 degrees.

5. The burner mounting seat according to claim 3, characterized in that The taper of the first tapered hole section is 58.6 degrees, and the taper of the second tapered hole section is 11 degrees.

6. The burner mounting seat according to claim 1, 2 or 5, characterized in that The support body comprises four refractory bricks fixedly mounted together, each refractory brick is in a fan-shaped ring shape, and each refractory brick has a connecting hole that passes through from top to bottom on its outer ring surface, and the connecting holes of the four refractory bricks form an installation channel.

7. The burner mounting seat according to claim 3, characterized in that The support body comprises four refractory bricks fixedly mounted together, each refractory brick is in a fan-shaped ring shape, and each refractory brick has a connecting hole that passes through from top to bottom on its outer ring surface, and the connecting holes of the four refractory bricks form an installation channel.

8. The burner mounting seat according to claim 4, characterized in that The support body comprises four refractory bricks fixedly mounted together, each refractory brick is in a fan-shaped ring shape, and each refractory brick has a connecting hole that passes through from top to bottom on its outer ring surface, and the connecting holes of the four refractory bricks form an installation channel.

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