A shielded silane ground torch burner

Abstract

This utility model belongs to the technical field of waste gas burners, and provides a silane ground flare burner with a shield, comprising: a riser, which is cylindrical in shape; a bend, which is connected to the riser and extends horizontally from the outer circumference of the riser and then bends upward to form an L-shaped structure; a burner tube, which is connected to the bend and arranged horizontally, and has multiple nozzles thereon; and a shield, which is connected to the burner tube; wherein, the shield has a shield plate located above the nozzles, which is used to cover each nozzle vertically to prevent rainwater backflow. This utility model, through the shield with the shield plate, can effectively prevent rainwater backflow into the burner, thereby avoiding internal corrosion of the burner and extending the service life of the burner.

Description

Technical Field

[0001] This utility model relates to the field of waste gas burner technology, specifically to a silane ground flare burner with a shield. Background Technology

[0002] The waste gas from silane production contains flammable and explosive silanes, which are generally treated by incineration with ground flares. When silane (SiH4) burns in air, it reacts with oxygen to produce silicon dioxide (SiO2) and water (H2O).

[0003] Currently, the nozzles of ground flare burners used for incinerating silane-containing waste gas are designed with a vertically upward structure. This type of vertically upward nozzle has the following problems:

[0004] 1. When no exhaust gas is being emitted, rainwater can easily flow back from the nozzle into the ground flare burner, causing internal corrosion and shortening the burner's service life.

[0005] 2. The silane-containing exhaust gas ejected from the nozzle flows vertically upwards. The contact time with the air is too short to mix it fully, resulting in incomplete combustion and emission into the air, causing environmental pollution.

[0006] 3. The silica produced after silane combustion tends to accumulate at the nozzle outlet. To avoid nozzle clogging, manual cleaning is required every half hour, resulting in a high frequency of operation. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a silane ground flare burner with a shield, which solves the problems of rainwater backflow and internal erosion caused by the vertically upward-designed nozzle outlet of existing ground flare burners, incomplete combustion of silane-containing exhaust gas causing environmental pollution, and silica accumulation leading to blockage.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A shielded silane ground flare burner, comprising:

[0010] The riser has a cylindrical structure;

[0011] The bend, which is connected to the riser, extends horizontally from the outer circumferential wall of the riser and then bends upward to form an L-shaped structure.

[0012] A heating tube, connected to the bent tube and arranged horizontally, has multiple nozzles on it; and

[0013] A shield is connected to the burner tube;

[0014] The shield has a shield located above the nozzles to cover each nozzle vertically to prevent rainwater backflow.

[0015] In one embodiment disclosed in this application, the bottom of the riser is open and the top is sealed, and both ends of the burner are sealed;

[0016] The top of the upward-bent pipe is higher than the top of the vertical pipe;

[0017] The burner extends radially along the riser, with its middle portion perpendicularly connected to the top of the bend.

[0018] The top of the outer circumferential wall of the burning tube is provided with a trapezoidal groove extending along its generatrix. The cover is provided with a retaining strip integrally formed with the cover plate and of the same length as the burning tube. The bottom of the retaining strip is detachably connected to the trapezoidal groove.

[0019] In one embodiment disclosed in this application, the plurality of nozzles are divided into two groups of equal number and staggered along the axial direction of the burning tube. The two groups of nozzles are respectively arranged in a line at equal intervals on both sides of the vertical bisecting plane of the burning tube through its axis.

[0020] The masking plates are arranged symmetrically in a pair, and are respectively connected to the top two sides of the card strip to form a Y-shaped structure. Each of the masking plates can cover a set of the nozzles in the vertical direction.

[0021] In one embodiment disclosed in this application, the air outlet direction of each nozzle is inclined upward, and the angle between the air outlet direction and the vertical bisecting plane of the burner tube is 30 to 45°.

[0022] The outer edge of each baffle can partially block the air outlet direction of each nozzle to deflect and turbulent the airflow ejected from each nozzle.

[0023] In one embodiment disclosed in this application, the angle between the air outlet direction of each nozzle and the perpendicular bisector of the burner tube is 45°.

[0024] In one embodiment disclosed in this application, a spiral guide groove is provided on the inner circumferential sidewall of each nozzle for guiding and diverting silane-containing waste gas to make it flow spirally.

[0025] In one embodiment disclosed in this application, the orifice diameter of each nozzle is 5 to 7 mm.

[0026] In one embodiment disclosed in this application, the circular array of the burnt tubes has six tubes, and the horizontal extensions of the six bent tubes corresponding to each other are divided into upper and lower layers in groups of three, with the horizontal extensions of the bent tubes in each layer spaced 120° apart.

[0027] In one embodiment disclosed in this application, the bottom of the riser is connected to a flange for connection with the exhaust gas pipe.

[0028] In one embodiment disclosed in this application, the flange, riser, bend, and burner are all made of stainless steel, and they are sequentially welded together and painted after the weld slag is removed.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] 1. The cover with a baffle can effectively prevent rainwater from flowing back into the burner, thereby avoiding internal corrosion and extending the service life of the burner. In addition, the cover can be detachably connected to the trapezoidal groove on the burner tube by a snap-fit ​​mechanism, which is convenient for cover replacement and burner maintenance.

[0031] 2. Through the upward-sloping nozzles on both sides, the silica produced by the combustion of silane can naturally fall off under its own gravity, achieving automatic cleaning. This transforms passive cleaning into active prevention, effectively avoiding nozzle clogging and reducing the frequency of manual cleaning operations. At the same time, the baffle deflects and turbulents the airflow from each nozzle, accelerating the mixing of a large amount of surrounding air with the silane-containing waste gas. This ensures complete combustion of the silane-containing waste gas, guarantees production safety, significantly improves waste gas combustion efficiency, and reduces environmental pollution.

[0032] 3. Through the spiral guide channel, the silane-containing waste gas can form a spiral airflow after being sprayed out of the nozzle, thereby blowing away the silicon dioxide produced by the combustion of silane, effectively preventing silicon dioxide from accumulating at the nozzle outlet and further avoiding nozzle blockage.

[0033] 4. The six burning tubes are arranged in a circular array, with nozzles on both sides tilted upwards to form an interlaced layout in space. This allows the silane-containing exhaust gas ejected to spiral upwards during combustion after being deflected and turbulent by the baffle, thereby changing the flame axisymmetry and creating a centrifugal force field at the nozzle outlet. This causes the silica produced by silane combustion to move away from the nozzle outlet, thus avoiding nozzle clogging caused by gravity deposition and achieving synergistic optimization of exhaust gas combustion efficiency and self-cleaning function.

[0034] 5. The horizontal extension sections of the six bends are divided into upper and lower layers in groups of three, which means that the interface positions with the riser are at different heights. This can evenly distribute the gas volume in the riser to each bend and burner, and make the flow rate of silane-containing waste gas sprayed from each nozzle as consistent as possible, thereby further ensuring that the silane-containing waste gas can be fully combusted and improving the combustion efficiency of the waste gas. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0037] Figure 2 This is a three-dimensional structural diagram of the present invention after the cover is removed;

[0038] Figure 3 for Figure 2 A magnified schematic diagram of section A in the middle;

[0039] Figure 4 for Figure 2 A top-view structural diagram;

[0040] Figure 5 This is a schematic diagram of the three-dimensional structure of the mask. Detailed Implementation

[0041] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0047] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0048] See Figures 1-5 As shown, this utility model provides a silane ground torch burner with a shield, comprising:

[0049] Riser 10 has a cylindrical structure;

[0050] The bend 20 is connected to the riser 10. It extends horizontally from the outer circumference of the riser 10 and then bends upward to form an L-shaped structure.

[0051] A heating tube 30, connected to a bent tube 20 and arranged horizontally, has multiple nozzles 31 on it; and

[0052] The shield 40 is connected to the burner tube 30;

[0053] The shield 40 has a shield 41 located above the nozzles 31, which is used to cover each nozzle 31 in the vertical direction to prevent rainwater from flowing back in.

[0054] Specifically, the riser 10 is open at the bottom and sealed at the top, while the burnt pipe 30 is sealed at both ends; the top of the upwardly bent pipe 20 is higher than the top of the riser 10; the burnt pipe 30 extends radially along the riser 10, with its middle part perpendicularly connected to the top of the bent pipe 20; a trapezoidal groove 32 extending along its generatrix is ​​provided on the top of the outer circumferential wall of the burnt pipe 30 (see details). Figure 2 and Figure 3 As shown, the shield 40 is provided with a retaining strip 42 integrally formed with the shield 41 and of the same length as the burner tube 30. The bottom of the retaining strip 42 is detachably connected to the trapezoidal groove 32 by a snap-fit. Silane-containing exhaust gas enters the riser 10 from the bottom of the opening, then flows through the bend 20 to the burner tube 30, and is finally ignited by the igniter (not shown) when it is ejected from the nozzle 31. When no exhaust gas is emitted, the shield 41, located above the nozzle 31, can prevent rainwater from flowing back into the silane ground flare burner from the nozzle 31. That is to say, the shield 40 with the shield 41 can effectively prevent rainwater from flowing back into the burner, thereby avoiding internal corrosion of the burner and extending the service life of the burner. In addition, the shield 40 is detachably connected to the trapezoidal groove 32 on the burner tube 30 by the retaining strip 42 by a snap-fit, which is convenient for the replacement of the shield 40 and the maintenance of the burner.

[0055] Multiple nozzles 31 are divided into two groups of equal number and staggered along the axial direction of the burner tube 30. The two groups of nozzles 31 are arranged in a straight line at equal intervals on both sides of the vertical bisecting plane of the burner tube 30 passing through its axis. A pair of baffles 41 are symmetrically arranged, which are respectively connected to the top two sides of the retaining strip 42 to form a Y-shaped structure. Each baffle 41 can cover one group of nozzles 31 in the vertical direction. The pair of baffles 41 form a V-shaped structure. Its inclined plate surface can guide rainwater, allowing rainwater to flow to both ends of the retaining strip 42, and preventing it from flowing back into the burner from the nozzles 31.

[0056] The outlet direction of each nozzle 31 is inclined upward, and the angle between this outlet direction and the perpendicular bisector of the combustion tube 30 is 30-45°. The outer edge of each baffle 41 (i.e., the side away from the top of the clip 42) can partially block the outlet direction of each nozzle 31 to deflect and turbulent the airflow ejected from each nozzle 31. During the combustion process of silane-containing waste gas ejected from the nozzle 31 at an inclined upward, the flame is tilted, and the silica produced by the combustion of silane will naturally fall off due to its own weight and will not accumulate at the outlet of the nozzle 31. At the same time, the outer edge of each baffle 41 can deflect and turbulent the airflow ejected from each nozzle 31, accelerating the mixing of a large amount of surrounding air with the silane-containing waste gas, so that the silane-containing waste gas burns more completely. In other words, through the upward-sloping nozzles 31 on both sides, the silica produced by the combustion of silane can naturally fall off under its own gravity, achieving automatic cleaning. This transforms passive cleaning into active prevention, effectively avoiding clogging of the nozzles 31 and reducing the frequency of manual cleaning operations. At the same time, the baffle 41 deflects and turbulents the airflow ejected from each nozzle 31, which can accelerate the mixing of a large amount of surrounding air with the silane-containing waste gas, ensuring the complete combustion of the silane-containing waste gas, guaranteeing production safety, significantly improving the waste gas combustion efficiency, and reducing environmental pollution.

[0057] In this embodiment, the angle between the air outlet direction of each nozzle 31 and the perpendicular bisector of the tube 30 is preferably 45°.

[0058] Each nozzle 31 has a spiral guide groove (not shown in the figure) on its inner circumferential sidewall, which is used to guide and divert the silane-containing waste gas to make it flow in a spiral. That is to say, through the spiral guide groove, the silane-containing waste gas can form a spiral airflow after being ejected from the nozzle 31, thereby blowing away the silicon dioxide produced by the combustion of silane, effectively preventing silicon dioxide from accumulating at the outlet of the nozzle 31, and further avoiding the clogging of the nozzle 31.

[0059] Each nozzle 31 has an orifice diameter of 5–7 mm. This allows each nozzle 31 to eject an appropriate amount of silane-containing waste gas to mix with air, thereby ensuring complete combustion while limiting the flame length during combustion.

[0060] In this embodiment, the 30-tube circular array has six tubes (see details). Figure 1As shown), the six horizontal extensions of the bends 20 corresponding to each other are divided into two layers of three, with each layer of the horizontal extensions of the bends 20 spaced 120° apart. Thus, the six burning tubes 30 are arranged in a circular array, and the nozzles 31 on both sides of each tube are inclined upwards to form a staggered layout in space. This allows the silane-containing exhaust gas ejected from the tubes to spiral upwards during combustion after being deflected and turbulent by the baffle 41, thereby changing the flame axisymmetry and forming a centrifugal force field at the nozzle 31 outlet. This causes the silica produced by the combustion of silane to move away from the nozzle 31 outlet, thus avoiding nozzle 31 blockage caused by gravity deposition. This achieves synergistic optimization of exhaust gas combustion efficiency and self-cleaning function. In addition, the horizontal extensions of the six bent tubes 20 are divided into upper and lower layers in groups of three, which means that their interface positions with the riser 10 are at different heights. This allows the gas volume in the riser 10 to be evenly distributed to each bent tube 20 and burning tube 30, so that the flow rate of silane-containing exhaust gas ejected from each nozzle 31 is as consistent as possible. This further ensures that the silane-containing exhaust gas can be fully combusted, thereby improving the exhaust gas combustion efficiency.

[0061] A flange 50 is connected to the bottom of the riser 10 for connection to the exhaust gas pipe (not shown in the figure). The connection between the flange 50 and the exhaust gas pipe enables the fixed installation of this silane ground flare burner.

[0062] In this embodiment, the flange 50, riser 10, bend 20 and burner 30 are all made of stainless steel. They are welded together in sequence, and after the weld slag is removed, the entire surface is sprayed with two coats of aluminum powder silicone heat-resistant paint W61-64 (600C), with a total paint film thickness of not less than 50μm.

[0063] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A silane ground torch burner with a shield, characterized in that, include: The riser has a cylindrical structure; The bend, which is connected to the riser, extends horizontally from the outer circumferential wall of the riser and then bends upward to form an L-shaped structure. The burner tube is connected to the bend tube and arranged horizontally, and has multiple nozzles on it; and A shield is connected to the burner tube; The shield has a shield located above the nozzles to cover each nozzle vertically to prevent rainwater backflow.

2. The silane ground torch burner with shield as described in claim 1, characterized in that: The riser is open at the bottom and sealed at the top, and the burner is sealed at both ends; The top of the upward-bent pipe is higher than the top of the vertical pipe; The burner extends radially along the riser, with its middle portion perpendicularly connected to the top of the bend. The top of the outer circumferential wall of the burning tube is provided with a trapezoidal groove extending along its generatrix. The cover is provided with a retaining strip integrally formed with the cover plate and of the same length as the burning tube. The bottom of the retaining strip is detachably connected to the trapezoidal groove.

3. The silane ground torch burner with shielding according to claim 2, characterized in that: The nozzles are divided into two groups of equal number and staggered along the axial direction of the tube. The two groups of nozzles are arranged in a line at equal intervals on both sides of the vertical bisecting plane of the tube through its axis. The masking plates are arranged symmetrically in a pair, and are respectively connected to the top two sides of the card strip to form a Y-shaped structure. Each of the masking plates can cover a set of the nozzles in the vertical direction.

4. The silane ground torch burner with shielding according to claim 3, characterized in that: The air outlet direction of each nozzle is inclined upward, and the angle between the air outlet direction and the vertical bisecting plane of the burner tube is 30 to 45°. The outer edge of each baffle can partially block the air outlet direction of each nozzle to deflect and turbulent the airflow ejected from each nozzle.

5. The silane ground torch burner with shielding according to claim 4, characterized in that, The angle between the air outlet direction of each nozzle and the perpendicular bisector of the tube is 45°.

6. The shielded silane ground torch burner according to any one of claims 1 to 5, characterized in that, Each nozzle has a spiral guide groove on its inner circumference wall to guide and divert silane-containing waste gas to make it flow in a spiral.

7. The silane ground torch burner with shielding according to claim 6, characterized in that, The orifice diameter of each nozzle is 5–7 mm.

8. The shielded silane ground torch burner according to any one of claims 1 to 5, characterized in that, The circular array of the burnt tubes consists of six tubes, and the horizontal extensions of the six bends corresponding to each other are divided into upper and lower layers in groups of three, with the horizontal extensions of the bends in each layer spaced 120° apart.

9. The silane ground torch burner with shield as described in claim 1, characterized in that, The bottom of the riser is connected to a flange for connection to the exhaust gas pipe.

10. The silane ground torch burner with shielding according to claim 9, characterized in that, The flanges, risers, bends, and burners are all made of stainless steel, and they are welded together in sequence and painted after the weld slag is removed.

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