Exhaust gas burner

Abstract

The utility model relates to the technical field of waste gas combustors, in particular to a waste gas combustor which comprises a first protective shell, a second protective shell is sleeved on the outer wall of the first protective shell close to the left end, a natural gas pipeline is arranged in the middle of the right end of the first protective shell, and a central cooling gas pipe is arranged in the middle of the right end of the natural gas pipeline. A flame monitor communicated with the interior is arranged at the right end, close to the top, of the first protective shell, an ever-burning fire pipeline is arranged at the right end, close to the natural gas pipeline, of the first protective shell, and a second-stage waste gas channel is formed in the outer wall, close to the top, of the first protective shell; according to the waste gas burner, the first protection shell and the second protection shell are arranged, stable protection cooperation is conducted on the interior, and under cooperation of the natural gas pipeline and the center cooling gas pipe, natural gas can be continuously introduced, and meanwhile cooling cooperation of the end of the natural gas pipeline is conducted; combustion-supporting air is uniformly and stably introduced for combustion-supporting cooperation through a three-stage cyclone, and waste gas is ignited under the cooperation of a long open fire pipeline with an ignition port.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas burners, in particular to a waste gas burner. Background Art

[0002] In the industrial production process, a large number of burners are used to fully burn the waste gas produced, reduce the waste gas emissions in the tail gas and pollute the surrounding environment.

[0003] The utility model with announcement number CN211537056U discloses an industrial waste gas burner, which includes a support frame; a storage mechanism, the support frame is installed at the bottom end of the storage mechanism; a combustion mechanism; a cleaning mechanism, the cleaning mechanism is slidably connected to the interior of the storage mechanism, the cleaning mechanism includes a blade, a fixing ring and a supporting ring, the interior of the storage mechanism is slidably connected to the supporting ring, and the two ends of the supporting ring are installed with the circular blade; the blade is slidably connected to the interior of the storage mechanism, and the fixing ring is obliquely installed on the inner side wall of the supporting ring; a sliding mechanism, the sliding mechanism is fixed to the side wall of the combustion mechanism, and the sliding mechanism is fixedly connected to the supporting ring; a connecting mechanism, the connecting mechanism is connected to the side wall of the blade; a discharging mechanism, the two ends of the storage mechanism are symmetrically installed with the discharging mechanism;

[0004] The above technical solution provides an industrial waste gas burner that is convenient for cleaning the smoke inside the combustion tube; however, waste gas burners generally have disadvantages such as poor flame rigidity, poor stability, inability to effectively burn out, and high CO and NOx emissions, which result in the burner having a small adaptability range, poor mixing effect of fuel and combustion aid, excessively high combustion temperature, the presence of local high temperature areas, and complex structure, which in turn leads to instability during the use of the burner and increases the generation of NOx and CO. Utility Model Content

[0005] The purpose of the utility model is to provide a waste gas burner to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The exhaust gas burner comprises a first protective shell, a second protective shell is sleeved on the outer wall of the first protective shell near the left end, a natural gas pipeline is provided in the middle of the right end of the first protective shell, a central cooling air pipe is provided in the middle of the right end of the natural gas pipeline, a flame monitor connected to the interior is provided near the top of the right end of the first protective shell, a long open flame pipeline is provided on the right end of the first protective shell near the natural gas pipeline, a secondary exhaust gas channel is provided near the top of the outer wall of the first protective shell, an exhaust gas interlayer is opened in the outer wall of the first protective shell, the exhaust gas interlayer is connected to the secondary exhaust gas channel, a primary exhaust gas channel connected to the interior is provided on the outer wall of the first protective shell, the interlayer between the inner wall of the second protective shell and the outer wall of the first protective shell is a combustion-supporting air interlayer, and a combustion-supporting air channel connected to the combustion-supporting air interlayer is provided on the outer wall of the second protective shell.

[0008] Preferably, the natural gas pipeline is fixedly connected to the first protective shell by screws, the natural gas pipeline extends to the inside of the second protective shell, a plurality of distribution branch pipes are provided at the end of the natural gas pipeline, distribution holes are provided on the ends of the distribution branch pipes, and a plurality of primary cyclones are also provided on the outer wall of the end of the natural gas pipeline.

[0009] In the utility model, the setting of the natural gas pipeline helps to continuously supply the natural gas that needs to be ignited. With the cooperation of multiple distribution branches, it helps to stably and evenly discharge the ignitable natural gas from the end. The distribution branches are distributed in a ring shape with equal intervals, and the distribution branches and the natural gas pipeline are an integrated structure. With the cooperation of multiple primary cyclones, it helps that the exhaust gas introduced into the first protective shell can enter the end of the distribution branch evenly and stably to cooperate with the exhaust gas combustion.

[0010] Preferably, the central cooling air pipe passes through the natural gas pipeline, and a plurality of jet holes are opened on the end of the central cooling air pipe. The central cooling air pipe is welded and fixed to the natural gas pipeline. An air inlet pipe connected to the interior is also provided on the outer wall of the natural gas pipeline near the right end.

[0011] In the utility model, the end of the central cooling air pipe is connected to the external compressed air pipeline, which helps to continuously introduce air into the natural gas pipeline through the central cooling air pipe to cool the end. With the cooperation of multiple jet holes, it helps to discharge the internal air evenly and stably to cool the end.

[0012] Preferably, the ever-open flame pipe is fixedly connected to the first protective shell by screws, the ever-open flame pipe passes through the first protective shell and extends into the second protective shell, and an ignition port is provided at the end of the ever-open flame pipe, and the flame monitor is fixedly connected to the first protective shell by screws.

[0013] In the utility model, the cooperation of the ignition port and the pilot flame pipeline is helpful to ignite the internal natural gas, and the cooperation of the flame monitor is helpful to monitor the internal flame in real time.

[0014] Preferably, the first protective shell is welded and fixed to the second protective shell, and a plurality of secondary cyclones are provided between the second protective shell and the first protective shell near the left end, and a plurality of tertiary cyclones are provided at the end of the combustion-supporting air interlayer, and the secondary cyclones are distributed in a ring shape with equal spacing, and the tertiary cyclones are distributed in a ring shape with equal spacing.

[0015] In the utility model, the cooperation of multiple secondary cyclones helps to evenly discharge the internal exhaust gas, and the cooperation of multiple tertiary cyclones helps to stably and evenly discharge the combustion-supporting air inside the combustion-supporting air interlayer and evenly mix it with the exhaust gas, thereby facilitating combustion coordination.

[0016] Preferably, the secondary exhaust gas channel is welded and fixed to the first protective shell, the primary exhaust gas channel is welded and fixed to the first protective shell, and the secondary exhaust gas channel is interconnected with the exhaust gas interlayer.

[0017] In the utility model, the cooperation of the secondary exhaust gas channel helps to continuously guide the exhaust gas that needs to be treated into the exhaust gas interlayer, and stably carry out ignition cooperation.

[0018] Preferably, the combustion-supporting air passage is welded and fixed to the second protective shell, and the combustion-supporting air passage is interconnected with the interior of the combustion-supporting air interlayer.

[0019] In the utility model, the combustion-supporting air channel is connected to the external combustion-supporting air duct, and the combustion-supporting air is continuously supplied and guided into the combustion-supporting air interlayer, and stably spirally discharged with the cooperation of the three-stage cyclone.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The utility model provides a first protective shell and a second protective shell to provide stable protection for the interior. The natural gas pipeline cooperates with the central cooling air pipe to help continuously introduce natural gas and cool down the end of the natural gas pipeline. The combustion-supporting air channel cooperates with the combustion-supporting interlayer, and the combustion-supporting air is evenly and stably introduced into the end of the natural gas pipeline through the three-stage cyclone to achieve combustion-supporting cooperation. The secondary exhaust gas channel cooperates with the exhaust gas interlayer and evenly and stably enters the end of the natural gas pipeline with the cooperation of the secondary cyclone. The exhaust gas is ignited in the cooperation of the long-open flame pipeline with an ignition port to reduce the impact of incomplete combustion gas emissions.

[0022] 2. The utility model provides a plurality of jet holes, which helps the air inside the central cooling air pipe to stably enter the end of the natural gas pipeline. While supporting combustion, the temperature of the end is reduced. The ejected natural gas is mixed with the exhaust gas from the primary exhaust gas channel. Before mixing, the exhaust gas passes through the primary cyclone to generate a swirl. The vortex crushing effect is used to enhance the mixing effect of the natural gas and the exhaust gas. The oxygen content of the exhaust gas itself is used to support combustion of the natural gas, thereby forming a stable natural gas flame at the central position downstream of the burner. The flame monitor is provided to facilitate real-time flame condition monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic side view of the whole of the utility model;

[0025] Figure 3 This is a schematic diagram of the second protective shell structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the first protective shell structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the combined structure of the natural gas pipeline and the pilot fire pipeline of the utility model;

[0028] Figure 6 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0029] The meaning of each number in the figure is:

[0030] 1. First protective shell; 10. Secondary exhaust gas channel; 11. Primary exhaust gas channel; 12. Exhaust gas interlayer;

[0031] 2. Second protective shell; 20. Combustion-supporting air channel; 21. Secondary cyclone; 22. Third-stage cyclone; 23. Combustion-supporting air interlayer;

[0032] 3. Natural gas pipeline; 30. Inlet pipe; 31. Distribution branch pipe; 310. Distribution hole; 32. Primary cyclone; 33. Jet hole; 34. Central cooling air pipe;

[0033] 4. Long-lasting open flame pipeline; 40. Ignition port;

[0034] 5. Flame detector. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-Figure 6 , this embodiment provides a technical solution:

[0037] The exhaust gas burner includes a first protective shell 1. A second protective shell 2 is sleeved on the outer wall of the first protective shell 1 near the left end. A natural gas pipeline 3 is provided in the middle of the right end of the first protective shell 1. The natural gas pipeline 3 is fixedly connected to the first protective shell 1 by screws. The natural gas pipeline 3 extends to the inside of the second protective shell 2. A plurality of distribution branch pipes 31 are provided at the end of the natural gas pipeline 3. Distribution holes 310 are provided at the ends of the distribution branch pipes 31. A plurality of primary cyclones 32 are also provided on the outer wall at the end of the natural gas pipeline 3.

[0038] In the utility model, the setting of the natural gas pipeline 3 helps to continuously supply the natural gas that needs to be ignited. With the cooperation of multiple distribution branches 31, it helps to stably and evenly discharge the ignitable natural gas from the end. The distribution branches 31 are distributed in a ring shape with equal intervals, and the distribution branches 31 and the natural gas pipeline 3 are an integrally formed structure. With the cooperation of multiple primary cyclones 32, it helps that the exhaust gas introduced into the first protective shell 1 can evenly and stably enter the end of the distribution branch 31 to cooperate with the exhaust gas combustion.

[0039] Furthermore, a central cooling air pipe 34 is provided in the middle of the right end of the natural gas pipeline 3. The central cooling air pipe 34 runs through the natural gas pipeline 3, and a plurality of jet holes 33 are opened at the end of the central cooling air pipe 34. The central cooling air pipe 34 is welded and fixed to the natural gas pipeline 3. An air intake pipe 30 connected to the interior is also provided on the outer wall of the natural gas pipeline 3 near the right end.

[0040] In the utility model, the end of the central cooling air pipe 34 is connected to the external compressed air pipeline, which helps to continuously pass air into the natural gas pipeline 3 through the central cooling air pipe 34 to cool the end, and with the cooperation of multiple jet holes 33, it helps to discharge the internal air evenly and stably to cool the end.

[0041] Specifically, a flame detector 5 connected to the interior is provided at the right end of the first protective shell 1 near the top, and a long-fire pipe 4 is provided on the right end of the first protective shell 1 near the natural gas pipeline 3. The long-fire pipe 4 is fixedly connected to the first protective shell 1 by screws. The long-fire pipe 4 passes through the first protective shell 1 and extends into the second protective shell 2, and an ignition port 40 is provided at the end of the long-fire pipe 4. The flame detector 5 is fixedly connected to the first protective shell 1 by screws.

[0042] In the present invention, the cooperation of the ignition port 40 and the pilot flame pipeline 4 is helpful to ignite the internal natural gas, and the cooperation of the flame monitor 5 is helpful to monitor the internal flame in real time.

[0043] It should be noted that a secondary exhaust gas channel 10 is provided on the outer wall of the first protective shell 1 near the top, and an exhaust gas interlayer 12 is opened in the outer wall of the first protective shell 1, and the exhaust gas interlayer 12 is connected to the secondary exhaust gas channel 10. A primary exhaust gas channel 11 connected to the interior is provided on the outer wall of the first protective shell 1, and the interlayer between the inner wall of the second protective shell 2 and the outer wall of the first protective shell 1 is a combustion-supporting air interlayer 23, and a combustion-supporting air channel 20 connected to the combustion-supporting air interlayer 23 is provided on the outer wall of the second protective shell 2.

[0044] Furthermore, the first protective shell 1 and the second protective shell 2 are welded and fixed, and a plurality of secondary cyclones 21 are provided near the left end between the second protective shell 2 and the first protective shell 1, and a plurality of tertiary cyclones 22 are provided at the end of the combustion-supporting air interlayer 23. The secondary cyclones 21 are distributed in a circular shape with equal spacing, and the tertiary cyclones 22 are distributed in a circular shape with equal spacing.

[0045] In the utility model, the cooperation of multiple secondary cyclones 21 helps to evenly discharge the internal exhaust gas, and the cooperation of multiple tertiary cyclones 22 helps to stably and evenly discharge the combustion-supporting air inside the combustion-supporting air interlayer 23 and evenly mix it with the exhaust gas, thereby facilitating combustion coordination.

[0046] Secondly, the secondary exhaust gas channel 10 is welded and fixed to the first protective shell 1 , the primary exhaust gas channel 11 is welded and fixed to the first protective shell 1 , and the secondary exhaust gas channel 10 and the exhaust gas interlayer 12 are interconnected.

[0047] In the present invention, the cooperation of the secondary exhaust gas channel 10 helps to continuously guide the exhaust gas that needs to be treated into the exhaust gas interlayer 12, and stably ignite the exhaust gas.

[0048] Furthermore, the combustion-supporting air passage 20 is welded and fixed to the second protective shell 2 , and the combustion-supporting air passage 20 is interconnected with the interior of the combustion-supporting air interlayer 23 .

[0049] In the present invention, the combustion-supporting air channel 20 is connected to the external combustion-supporting air duct to continuously supply combustion-supporting air, which is guided into the combustion-supporting air interlayer 23 and discharged in a stable spiral with the cooperation of the three-stage cyclone 22.

[0050] When the exhaust gas burner of this embodiment is used, the user first connects the first protective shell 1 with the secondary exhaust gas channel 10 and the primary exhaust gas channel 11 with the combustion-supporting air channel 20 and the second protective shell 2, and the natural gas pipeline 3 with the central cooling air pipe 34 runs through the first protective shell 1 and the second protective shell 2, and then installs the secondary cyclone 21 between the second protective shell 2 and the first protective shell 1, and the tertiary cyclone 22 is installed in the combustion-supporting air interlayer 23, and the primary cyclone 32 is fixed to the end of the natural gas pipeline 3, and the long open flame pipeline 4 with the ignition port 40 is inserted in the first protective shell 1 and the second protective shell 2, and the flame monitor 5 is fixed on the first protective shell 1;

[0051] When in use, natural gas enters the center of the burner from the natural gas pipeline 3 and is divided into two parts in the channel. One part reaches the end of the natural gas pipeline 3 and is ejected through the radial circular hole, and the other part is ejected through the distribution hole 310 at the end of the distribution branch pipe 31. The natural gas ejected from the circular hole and the distribution hole 310 is mixed with the exhaust gas from the primary exhaust gas channel 11. Before mixing, the exhaust gas passes through the primary cyclone 32 to generate a swirl, and the vortex crushing effect is used to enhance the mixing effect of the natural gas and the exhaust gas. The oxygen content of the exhaust gas itself is used to assist the combustion of the natural gas, thereby forming a stable natural gas flame at the central position downstream of the burner. The flame is monitored by the flame monitor 5, and the central cooling air pipe 34 is supplemented with air to achieve flame stability. The long-open flame pipe 4 forms a continuous and stable ignition source at the root of the main flame, thereby improving the reliability of the central flame.

[0052] Another part of the exhaust gas enters the exhaust gas interlayer 12 through the secondary exhaust gas channel 10, and reaches the burner outlet through the secondary cyclone 21. The combustion-supporting air enters the combustion-supporting air interlayer 23 through the combustion-supporting air channel 20, and reaches the burner outlet through the tertiary cyclone 22 at the end of the interlayer. The combustion-supporting air wraps the exhaust gas to avoid the escape of combustible components in the exhaust gas, achieves efficient combustion of the exhaust gas, and efficiently mixes the natural gas, exhaust gas, and combustion-supporting air to avoid the occurrence of local hot spots in the combustion chamber, thereby reducing the emissions of NOx and CO.

Claims

1. An exhaust gas burner, comprising a first protective shell (1), wherein a second protective shell (2) is sleeved on the outer wall of the first protective shell (1) near the left end, and characterized in that: A natural gas pipeline (3) is provided in the middle of the right end of the first protective shell (1), and a central cooling air pipe (34) is provided in the middle of the right end of the natural gas pipeline (3). A flame detector (5) connected to the interior is provided near the top of the right end of the first protective shell (1). A long open flame pipeline (4) is provided near the right end of the first protective shell (1) and close to the natural gas pipeline (3). A secondary exhaust gas channel (10) is provided near the top of the outer wall of the first protective shell (1). An exhaust gas interlayer (12) is opened in the outer wall of the first protective shell (1), and the exhaust gas interlayer (12) is connected to the secondary exhaust gas channel (10). A primary exhaust gas channel (11) connected to the interior is provided on the outer wall of the first protective shell (1). The interlayer between the inner wall of the second protective shell (2) and the outer wall of the first protective shell (1) is a combustion-supporting air interlayer (23), and a combustion-supporting air channel (20) connected to the combustion-supporting air interlayer (23) is provided on the outer wall of the second protective shell (2).

2. The exhaust gas burner according to claim 1, characterized in that: The natural gas pipeline (3) is fixedly connected to the first protective shell (1) by means of screws, the natural gas pipeline (3) extends into the interior of the second protective shell (2), a plurality of distribution branch pipes (31) are provided at the end of the natural gas pipeline (3), a distribution hole (310) is provided at the end of each distribution branch pipe (31), and a plurality of primary cyclones (32) are also provided on the outer wall of the end of the natural gas pipeline (3).

3. The exhaust gas burner according to claim 2, characterized in that: The central cooling air pipe (34) penetrates the natural gas pipeline (3), and a plurality of jet holes (33) are provided at the end of the central cooling air pipe (34). The central cooling air pipe (34) is welded and fixed to the natural gas pipeline (3). An air intake pipe (30) communicating with the interior is also provided on the outer wall of the natural gas pipeline (3) near the right end.

4. The exhaust gas burner according to claim 1, characterized in that: The ever-open flame pipe (4) is fixedly connected to the first protective shell (1) by means of screws, the ever-open flame pipe (4) passes through the first protective shell (1) and extends into the second protective shell (2), and an ignition port (40) is provided at the end of the ever-open flame pipe (4), and the flame monitor (5) is fixedly connected to the first protective shell (1) by means of screws.

5. The exhaust gas burner according to claim 1, characterized in that: The first protective shell (1) and the second protective shell (2) are welded and fixed, and a plurality of secondary cyclones (21) are provided between the second protective shell (2) and the first protective shell (1) near the left end, and a plurality of tertiary cyclones (22) are provided at the end of the combustion-supporting air interlayer (23), wherein the secondary cyclones (21) are distributed in a circular shape with equal spacing, and the tertiary cyclones (22) are distributed in a circular shape with equal spacing.

6. The exhaust gas burner according to claim 1, characterized in that: The secondary exhaust gas channel (10) is welded and fixed to the first protective shell (1), the primary exhaust gas channel (11) is welded and fixed to the first protective shell (1), and the secondary exhaust gas channel (10) and the exhaust gas interlayer (12) are interconnected.

7. The exhaust gas burner according to claim 1, characterized in that: The combustion-supporting air channel (20) is welded and fixed to the second protective shell (2), and the combustion-supporting air channel (20) is interconnected with the interior of the combustion-supporting air interlayer (23).

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