Torch burner

Abstract

The utility model discloses a torch combustor, and belongs to the combustor technology, the torch combustor comprises a barrel body, the barrel body comprises a first shell body and a second shell body, the first shell body is provided with a combustion cavity, the second shell body is arranged on the periphery of the first shell body in a surrounding mode, the second shell body and the first shell body are connected and define a preheating cavity, and the preheating cavity communicates with the combustion cavity; the flow dividing pipe is used for conveying flare gas, and the flow dividing pipe is connected with the barrel and penetrates through the preheating cavity; the fins are connected with the first shell and penetrate through the first shell, so that one part of each fin is located in the combustion cavity, and the other part of each fin is located in the preheating cavity; the flare gas is conveyed into the preheating cavity to be preheated, after the flare gas is preheated, the overall activity is improved, the combustion performance of the flare gas is improved, and therefore the possibility that the flare gas shakes or is extinguished in the combustion process is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of burners, and in particular relates to a flare burner. Background Art

[0002] The flare system is a special combustion facility used to treat flammable and combustible toxic gases and steam that cannot be recovered and reprocessed in petrochemical plants, refineries, chemical plants and other plants or devices.

[0003] Since some flare gases have low flammability, the flame stability of the flare gas combustion may be poor, and the flame may easily shake or go out. Utility Model Content

[0004] Purpose of the utility model: The embodiment of the present application provides a flare burner, which aims to overcome the current technical problem that flare gas with low flammability is prone to shaking or extinguishing during combustion.

[0005] Technical solution: The torch burner described in the embodiment of the present application comprises: a cylinder, comprising a first shell and a second shell, the first shell having a combustion chamber, the second shell being arranged around the outer periphery of the first shell, the second shell being connected to the first shell and enclosing a preheating chamber, the preheating chamber being communicated with the combustion chamber;

[0006] A shunt pipe, used for conveying flare gas, the shunt pipe is connected to the cylinder and penetrates the preheating chamber;

[0007] A fin is connected to the first shell, and the fin passes through the first shell so that a part of the fin is located in the combustion chamber and another part of the fin is located in the preheating chamber.

[0008] In some embodiments, a combustion-mixing pipe is also included, wherein the combustion-mixing pipe is connected to the cylinder and penetrates the preheating chamber, and the combustion-mixing pipe is used to transport the combustion-mixing gas into the preheating chamber.

[0009] In some embodiments, the diverter tube and the blending tube are provided in plurality and distributed circumferentially around the cylinder, and the diverter tube and the blending tube are arranged at intervals.

[0010] In some embodiments, the blending tube is located in the preheating chamber at one end and is closed, and the outer wall of the tube is provided with a plurality of air outlet holes connected to the interior thereof.

[0011] In some embodiments, the first shell is provided with a channel, and the channel connects the combustion chamber and the preheating chamber;

[0012] The first shell has a fire outlet and an air inlet, the air outlet ends of the diverter pipe and the blending pipe are located between the fire outlet and the air inlet, and the air outlet ends of the diverter pipe and the blending pipe are arranged closer to the fire outlet than the channel.

[0013] In some embodiments, a first swirl plate is further included, wherein the first swirl plate is connected to the first shell and is located in the channel.

[0014] In some embodiments, the channel and the first swirl plate are both provided in plurality, the plurality of channels are arranged at intervals around the circumference of the first shell, and each of the first swirl plates is located in one of the channels.

[0015] In some embodiments, the first shell includes a main body and a drainage portion, the main body having the combustion chamber, the drainage portion is connected to the main body and is surrounded by a channel connecting the combustion chamber and the preheating chamber, the first swirl sheet is connected to the drainage portion, and the drainage portion is inclined.

[0016] In some embodiments, a third shell is further included, wherein the third shell is connected to the cylinder, the third shell has an air cavity connected to the combustion chamber, and the outer wall of the third shell is connected to a ventilation pipe connected to the air cavity.

[0017] In some embodiments, a second swirl plate is further included, the cylinder has an air inlet, the air inlet connects the combustion chamber and the air chamber, and the second swirl plate is connected to the first shell and is located in the air inlet.

[0018] In some embodiments, a fourth shell and a dynamic seal are also included, wherein the fourth shell is connected to the third shell, the fourth shell has a flare gas cavity, the end of the diverter tube away from the cylinder is connected to the fourth shell to communicate with the preheating cavity and the flare gas cavity, and the dynamic seal is connected to the fourth shell and is located in the flare gas cavity.

[0019] In some embodiments, the cylinder is provided with a plurality of ever-burning lamps arranged at intervals along its circumference, and each of the ever-burning lamps is disposed in the combustion chamber.

[0020] In some embodiments, a plurality of fins are provided and are spaced apart along the circumference of the first shell, and each of the fins extends along the first direction.

[0021] In some embodiments, the second shell is a thermally insulating material.

[0022] Beneficial effect: The flare burner of the embodiment of the present application forms a preheating chamber by setting a second shell and a first shell. The heat generated during combustion in the combustion chamber is transferred to the preheating chamber through the fins. The flare gas is transported to the preheating chamber through the shunt pipe, and then transported to the combustion chamber for combustion after being heated. After the flare gas is heated, the overall activity is improved, so that its combustion performance is improved, thereby reducing the possibility of the flare gas shaking or extinguishing during combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a flare burner provided in an embodiment of the present application;

[0025] Figure 2 A three-dimensional cross-sectional view of a flare burner provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the relative positions of the diverter tube and the blending tube and the direction of the airflow provided in the embodiment of the present application;

[0027] Figure 4 A schematic diagram of a combustion-mixing tube and an air outlet provided in an embodiment of the present application;

[0028] Figure 5 A front view of a flare burner provided in an embodiment of the present application.

[0029] Figure numerals: 1. cylinder; 11. first shell; 110. combustion chamber; 111. passage; 112. fire outlet; 113. air inlet; 114. main body; 115. drainage part; 12. second shell; 121. preheating chamber; 2. diverter pipe; 3. fin; 4. blending tube; 41. air outlet; 5. first swirl sheet; 6. third shell; 61. air chamber; 62. ventilation pipe; 7. second swirl sheet; 8. fourth shell; 81. torch air chamber; 82. dynamic seal; 9. ever-burning lamp. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that the terms "height", "thickness", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined.

[0032] It should also be noted that in the drawings of the embodiments of the present application, the arrow marked with X represents the first direction X of the flare burner. The first direction X is introduced to more clearly describe the structure and relative position relationship of the components in the flare burner. In actual applications, the first direction X may change according to different placement methods of the flare burner.

[0033] The embodiment of the present application provides a flare burner for solving the problem that the flare gas with low flammability has poor stability during combustion, especially for ammonia, a gas with low flammability, narrow flammable range and low combustion speed.

[0034] Please combine Figure 1 and Figure 2 The flare burner of the embodiment of the present application includes a cylinder 1, a diverter pipe 2 and a fin 3. The cylinder 1 includes a first shell 11 and a second shell 12. The first shell 11 has a combustion chamber 110. The second shell 12 is arranged around the outer periphery of the first shell 11. The second shell 12 is connected to the first shell 11 and encloses a preheating chamber 121. The preheating chamber 121 is an annular structure and is connected to the combustion chamber 110.

[0035] The shunt pipe 2 is connected to the cylinder 1 and penetrates the preheating chamber 121 . One end of the shunt pipe 2 is located in the preheating chamber 121 , and the other end is located outside the cylinder 1 , and is used to transport the flare gas to the preheating chamber 121 .

[0036] The fin 3 is connected to the first shell 11 and passes through the first shell 11 , so that a portion of the fin 3 is located in the combustion chamber 110 and another portion is located in the preheating chamber 121 .

[0037] When combustion occurs in the combustion chamber 110, the fins 3 are heated and transfer heat to the preheating chamber 121, preheating the flare gas in the preheating chamber 121, and the preheated flare gas is passed into the combustion chamber 110 for combustion. After the flare gas is preheated, the activity of the fuel is improved, so that the combustion performance is improved, thereby increasing the stability of the flare gas during combustion.

[0038] Specifically, ammonia is transported to the preheating chamber 121 through the bypass pipe 2. After the ammonia is preheated, on the one hand, it can be easier for it to reach the temperature required for combustion, reducing the need for additional heat during the combustion process, thereby improving combustion efficiency and reducing energy loss; on the other hand, preheating the ammonia can make it easier for it to reach an active state, that is, ammonia molecules can more easily collide with oxygen molecules and produce a combustion reaction, and then it is easier to be ignited and maintain stable combustion.

[0039] Please combine Figure 1 and Figure 2 In some embodiments, a plurality of fins 3 are provided and arranged at intervals along the circumference of the first shell 11 , and each fin 3 extends along the first direction.

[0040] The multiple fins 3 accelerate the transfer of heat into the preheating chamber 121, thereby improving the preheating efficiency and uniformity of the ammonia. The fins 3 extending in the first direction are consistent with the direction of the airflow discharge during combustion, which avoids the situation of causing disturbance to the combustion compared to the fins 3 extending in the radial direction of the first shell 11.

[0041] In some embodiments, the second shell 12 is made of insulating material, such as foamed concrete, calcium silicate, etc. The second shell 12 made of insulating material can block heat flow transfer, so that the temperature in the preheating chamber 121 is maintained within a certain range, thereby improving the utilization rate of heat.

[0042] Please refer to Figure 2 In some embodiments, the flare burner also includes a blending tube 4 arranged along the first direction, the blending tube 4 is connected to the cylinder 1 and penetrates the preheating chamber 121, one end of the blending tube 4 is located in the preheating chamber 121, and the other end is outside the cylinder 1, and is used to transport the blending gas into the preheating chamber 121.

[0043] The mixed combustion gas is a combustible gas, which can be a mixed gas composed of methane and hydrogen. It is input into the preheating chamber 121 through the mixed combustion pipe 4 to mix with the flare gas to form a mixed gas, and the mixed gas is transported to the combustion chamber 110 for combustion after preheating. The mixed combustion gas can increase the temperature and speed of combustion, which is conducive to maintaining the stable combustion of the flare gas.

[0044] In some embodiments, there are multiple diverter tubes 2 and multiple blending tubes 4, and the multiple diverter tubes 2 and multiple blending tubes 4 are distributed circumferentially around the cylinder 1, and the diverter tubes 2 and the blending tubes 4 are arranged at intervals.

[0045] Multiple branch pipes 2 increase the speed of flare gas transportation and the flare gas output area, and each blending pipe 4 corresponds to a branch pipe 2, so that the output area of ​​the blending gas and the output area of ​​the flare gas can be close to each other and achieve an effect of at least partial fusion with each other, thereby increasing the uniformity of the mixing of the flare gas and the blending gas.

[0046] Please combine Figure 3 and Figure 4 In some embodiments, one end of the blending tube 4 located in the preheating chamber 121 is closed, and the outer wall of the blending tube 4 is provided with a plurality of air outlet holes 41 connected to the interior thereof.

[0047] A plurality of gas outlet holes 41 are arranged at intervals around the outer circumference of the blending tube 4. The plurality of gas outlet holes 41 divide the blending gas into a plurality of small gas flows after being outputted. Each small gas flow is mixed with the surrounding flare gas, further increasing the uniformity of the mixing.

[0048] Please combine Figure 2 and Figure 3 In some embodiments, the first shell 11 is provided with a channel 111, and the channel 111 connects the combustion chamber 110 and the preheating chamber 121. The first shell 11 has a fire outlet 112 and an air inlet 113 that are distributed opposite to each other along a first direction. The air inlet 113 connects the combustion chamber 110 with the outside, so that the external air continuously enters the combustion chamber 110 to provide sufficient oxygen. The diverter pipe 2 and the mixed combustion pipe 4 both include an air inlet end and an air outlet end, wherein the air inlet end is outside the cylinder 1, and the air outlet end is located in the preheating chamber 121. The air outlet ends of the diverter pipe 2 and the mixed combustion pipe 4 are located between the fire outlet 112 and the air inlet 113, and the air outlet ends of the diverter pipe 2 and the mixed combustion pipe 4 are arranged closer to the fire outlet 112 than the channel 111.

[0049] The gas outlet ends of the diversion pipe 2 and the blending pipe 4 are higher than the channel 111. When the flare gas and the blending gas are output from the gas outlet ends, they will settle under the action of gravity. During the settling process, the movement paths of the two gases increase and the movement time increases, so that the two gases can be fully mixed.

[0050] Please refer to Figure 2 In some embodiments, the flare burner further includes a first swirl sheet 5 , which is connected to the first shell 11 and is located in the channel 111 .

[0051] The combustion in the combustion chamber 110 generates an ascending airflow, which introduces the mixed gas into the combustion chamber 110 from the passage 111. The gas forms a swirl when passing through the first swirl plate 5, which can accelerate the mixing of the flare gas and the mixed combustion gas.

[0052] In some embodiments, a plurality of channels 111 and a plurality of first swirl plates 5 are provided, and the plurality of channels 111 are arranged at intervals in the circumferential direction of the first shell 11 , and each first swirl plate 5 is located in one channel 111 .

[0053] The plurality of first swirl sheets 5 can form a plurality of corresponding mixed gas swirls, which draw air in to achieve rapid mixing between gases, thereby allowing the gases to be fully burned.

[0054] Please refer to Figure 2In some embodiments, the first shell 11 includes a main body 114 and a guide portion 115, the main body 114 has a combustion chamber 110, the second shell 12 is arranged around the outer periphery of the main body 114 and is connected to the main body 114, the guide portion 115 is connected to the main body 114, and is surrounded by a channel 111 that connects the combustion chamber 110 and the preheating chamber 121, the first swirl sheet 5 is connected to the guide portion 115 and is located in the channel 111, and the guide portion 115 is inclined and obliquely upward close to the fire outlet 112.

[0055] The inclined guide portion 115 allows the mixed gas to move obliquely upward after being drawn out from the channel 111, and can more easily move with the combustion airflow. Compared with the guide portion 115 being arranged perpendicular to the axis of the cylinder 1, it can reduce the disturbance caused to the combustion.

[0056] Please refer to Figure 2 In some embodiments, the flare burner also includes a third shell 6, which is connected to the cylinder 1 and located below the cylinder 1. The third shell 6 has an air cavity 61 connected to the combustion chamber 110, and the outer wall of the third shell 6 is connected to a ventilation pipe 62 connected to the air cavity 61.

[0057] External air enters the air cavity 61 through the ventilation pipe 62 and then enters the combustion cavity 110. The third shell 6 limits the path for external air to enter the combustion cavity 110 and blocks the air inlet 113 of the combustion cavity 110, so that the combustion cavity 110 forms a semi-closed cavity to resist the invasion of external wind and increase the stability of combustion.

[0058] Please refer to Figure 2 In some embodiments, the flare burner further comprises a second swirl sheet 7, which is connected to the first shell 11 and is located in the air inlet 113. The number of blades of the second swirl sheet 7 is 4 to 16, and the blade angle is 5° to 40°. The air inlet 113 connects the combustion chamber 110 and the air chamber 61. When the external air enters the air chamber 61 through the ventilation pipe 62, an air swirl is formed when it flows through the second swirl sheet 7. The air swirl rotates upward and attracts the mixed gas, further increasing the mixing effect of the flare gas and the mixed combustion gas. The air swirl has both an axial velocity of forward movement and a tangential velocity along the circumferential motion, which enhances the disturbance ability of the air flow in the axial and tangential directions in the flow direction. In addition, the mixed gas swirl formed when the mixed gas in the preheating chamber 121 passes through the first swirl sheet 5 forms a double-effect swirl mixing effect with the air swirl, making the combustion more complete.

[0059] Please combine Figure 2 and Figure 5In some embodiments, the flare burner further comprises a fourth shell 8 and a dynamic seal 82. The fourth shell 8 is connected to the end of the third shell 6 away from the barrel 1. The fourth shell 8 has a flare gas cavity 81 and a cavity opening connected to the flare gas cavity 81. The flare gas cavity 81 and the air cavity 61 are independent of each other. The end of the shunt tube 2 away from the barrel 1 is connected to the fourth shell 8 so that the preheating cavity 121 and the flare gas cavity 81 are connected. The dynamic seal 82 is connected to the fourth shell 8 and is located in the flare gas cavity 81. The dynamic seal 82 is located below the air inlet end of the shunt tube 2.

[0060] The dynamic seal 82 has the function of preventing flashback in the case of low pressure or at the end of flare gas discharge. The structure of the dynamic seal 82 is the existing technology, and a velocity sealer or a molecular sealer can be used. For details, please refer to the petrochemical industry standard - SH3009-2013.

[0061] In the aforementioned embodiment, the plurality of shunt pipes 2 are distributed at intervals around the outer circumference of the second shell 12 , so that the air inlet end of each shunt pipe 2 is connected to the outer circumferential wall of the fourth shell 8 and is arranged at intervals around the outer circumference of the fourth shell 8 .

[0062] The flare gas is input through the fourth shell 8 and then transported to the preheating chamber 121 through each branch pipe 2.

[0063] Please combine Figure 2 and Figure 5 In some embodiments, the cylinder 1 is provided with a plurality of ever-burning lamps 9 arranged at intervals along its circumference, and each ever-burning lamp 9 is disposed in the combustion chamber 110. The ever-burning lamp 9 is an ignition device, which is connected to the external fuel. The ever-burning lamp 9 outputs and ignites the fuel, and uses the burning fuel to ignite the mixed gas drawn from the preheating chamber 121, thereby achieving the combustion treatment of the ammonia. The specific structure and working principle of the ever-burning lamp 9 can refer to the prior art, and will not be repeated here.

[0064] The flare burner provided in the embodiments of the present application is introduced in detail above, and the principles and implementation methods of the present application are explained by using specific examples. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A flare burner, characterized in that: include: The cylinder (1) comprises a first shell (11) and a second shell (12), wherein the first shell (11) has a combustion chamber (110), the second shell (12) is arranged around the outer periphery of the first shell (11), the second shell (12) is connected to the first shell (11) and encloses a preheating chamber (121), and the preheating chamber (121) is communicated with the combustion chamber (110); A shunt pipe (2) for conveying flare gas, the shunt pipe (2) being connected to the cylinder (1) and passing through the preheating chamber (121); A fin (3) is connected to the first shell (11), and the fin (3) passes through the first shell (11), so that a part of the fin (3) is located in the combustion chamber (110) and another part is located in the preheating chamber (121).

2. The flare burner according to claim 1, characterized in that: It also comprises a combustion-mixing pipe (4), which is connected to the cylinder (1) and penetrates the preheating chamber (121), and is used to transport combustion-mixing gas into the preheating chamber (121).

3. The flare burner according to claim 2, characterized in that: The diverter tube (2) and the blending tube (4) are both provided in plurality and are circumferentially distributed around the cylinder (1), and the diverter tube (2) and the blending tube (4) are arranged at intervals.

4. The flare burner according to claim 2, characterized in that: One end of the blending tube (4) located in the preheating chamber (121) is closed, and a plurality of air outlet holes (41) communicating with the interior of the tube are provided on the outer wall of the tube.

5. The flare burner according to claim 2, characterized in that: The first shell (11) is provided with a channel (111), and the channel (111) connects the combustion chamber (110) and the preheating chamber (121); The first shell (11) has a fire outlet (112) and an air inlet (113); the air outlet ends of the diverter pipe (2) and the blending pipe (4) are located between the fire outlet (112) and the air inlet (113); and the air outlet ends of the diverter pipe (2) and the blending pipe (4) are arranged closer to the fire outlet (112) than to the channel (111).

6. The flare burner according to claim 5, characterized in that: It also comprises a first swirl plate (5), wherein the first swirl plate (5) is connected to the first shell (11) and is located in the channel (111).

7. The flare burner according to claim 6, characterized in that: A plurality of the channels (111) and the first swirl blades (5) are provided, and the plurality of channels (111) are arranged at intervals in the circumferential direction of the first shell (11), and each of the first swirl blades (5) is located in one of the channels (111).

8. The flare burner according to claim 7, characterized in that: The first shell (11) comprises a main body (114) and a guide portion (115); the main body (114) has the combustion chamber (110); the guide portion (115) is connected to the main body (114) and surrounds a channel (111) for connecting the combustion chamber (110) and the preheating chamber (121); the first swirl sheet (5) is connected to the guide portion (115); and the guide portion (115) is arranged at an angle.

9. The flare burner according to claim 1, characterized in that: The invention also comprises a third shell (6), wherein the third shell (6) is connected to the cylinder (1), the third shell (6) has an air cavity (61) connected to the combustion cavity (110), and the outer wall of the third shell (6) is connected to a ventilation pipe (62) connected to the air cavity (61).

10. The flare burner according to claim 9, characterized in that: The cylinder (1) further comprises a second swirl plate (7), the cylinder (1) having an air inlet (113), the air inlet (113) connecting the combustion chamber (110) and the air chamber (61), the second swirl plate (7) being connected to the first shell (11) and being located in the air inlet (113).

11. The flare burner according to claim 9, characterized in that: It also includes a fourth shell (8) and a dynamic seal (82), wherein the fourth shell (8) is connected to the third shell (6), the fourth shell (8) has a flare gas cavity (81), and the end of the diverter tube (2) away from the cylinder (1) is connected to the fourth shell (8) so that the preheating cavity (121) and the flare gas cavity (81) are connected, and the dynamic seal (82) is connected to the fourth shell (8) and is located in the flare gas cavity (81).

12. The flare burner according to claim 1, characterized in that: The cylinder (1) is provided with a plurality of ever-burning lamps (9) arranged at intervals along its circumference, and each of the ever-burning lamps (9) is disposed in the combustion chamber (110).

13. The flare burner according to claim 1, characterized in that: A plurality of fins (3) are provided and are arranged at intervals along the circumference of the first shell (11); each fin (3) extends along a first direction.

14. The flare burner according to claim 1, characterized in that: The second shell (12) is made of heat insulating material.

Images