Novel waste gas and waste liquid burner

Abstract

According to the novel waste gas and waste liquid burner, a multi-layer sleeve structure is adopted to introduce combustion air and waste gas, sleeve interlayers between pipes serve as waste gas flow channels, and a central air pipe serves as an air flow channel. And the waste liquid spray gun is arranged in the middle of the combustor. And the retention time of the waste liquid in a rotational flow area formed by the rotational flow sheets is prolonged, and the incineration effect is enhanced. Different holes of an annular combustion-supporting gas spray gun on the combustor achieve the effects of intensifying waste liquid incineration, tangentially spraying and mutually igniting to ensure the combustion stability and radially and outwards intensifying waste gas incineration. On the premise that the same incineration effect and treatment capacity are achieved, the fuel gas consumption is low, and carbon emission and nitrogen oxide emission are effectively reduced. Flame stability is high, flame rigidity is good, and operation is safe and reliable. The overall structure is simple and convenient to maintain.

Description

Technical Field

[0001] This application relates to the field of environmental protection equipment technology, and in particular to a novel waste gas and waste liquid burner. Background Technology

[0002] Chemical production processes generate various industrial waste gases and liquids. Incineration can burn off harmful substances, recover and utilize waste heat, and reduce treatment costs, achieving the goals of waste reduction, harmlessness, and resource recovery.

[0003] Currently, there are still some defects in the burners used for waste gas and waste liquid incineration treatment that need improvement. Common defects include: (1) The combustion air flows out of the burner eccentrically, causing flame eccentricity and affecting the burner's lifespan. (2) The burner outlet velocity is too high, resulting in insufficient residence time of waste gas and waste liquid at the burner head, leading to poor incineration and decomposition effects. (3) The unscientific design of the combustion fuel gas structure leads to poor ignition and stable combustion performance of the burner. (4) The waste gas is injected into the incinerator through the nozzles on the burner, and the waste gas nozzles are prone to clogging. Summary of the Invention

[0004] This application provides a novel waste gas and waste liquid burner that can address the problem of poor combustion effect in existing burners. It also further improves combustion stability, increases the residence time of waste liquid in the high-temperature zone of the flame, and enhances the waste liquid incineration effect.

[0005] This application provides a novel waste gas and waste liquid burner, the burner comprising a burner shell, an ignition gun, an annular combustion aid burner, a swirl fan plate, a burner brick, and a waste liquid spray gun;

[0006] The burner shell has a multi-layer sleeve structure, with the combustion air duct at the very center and the exhaust gas passage in the outer layer. The multiple sleeves are not interconnected.

[0007] An air inlet is provided at the rear of the burner casing; a swirl vane is provided at the center of the burner; an ignition gun and an annular combustion aid burner are provided around the swirl vane.

[0008] Multiple exhaust gas inlets are distributed in the middle section of the burner casing;

[0009] The burner is installed at the end of the burner casing away from the air inlet for firing bricks.

[0010] Furthermore, the combustion-supporting air duct has several holes, and the net flow area of ​​the holes is smaller than the flow area of ​​the air duct opening.

[0011] When the number of holes is less than the preset number, no holes are set in the direction directly opposite the air duct opening.

[0012] Furthermore, the annular combustion-supporting burner includes several combustion-supporting burner nozzles arranged circumferentially;

[0013] The burner nozzle of the combustion aid has multiple fuel gas holes;

[0014] Fuel orifices include three types: the first type of orifice sprays along the tangent of the annular combustion-supporting burner; the second type of orifice sprays radially outward.

[0015] The third type of nozzle is radial, forming an angle of 30 to 90 degrees with the direction of the gas flow from the first type of nozzle;

[0016] The third type of nozzle forms the main flame of the burner; the injection direction of the third type of gas nozzle forms an angle of 30-60° with the nozzle axis.

[0017] Furthermore, the heavy component waste liquid inlet is located at the center of the burner, and the end is equipped with a heavy component waste liquid nozzle;

[0018] The light component waste liquid inlet is set parallel to one side of the heavy component waste liquid inlet, and the end is equipped with a light component waste liquid nozzle;

[0019] The light component waste liquid spray gun is angled, aiming towards the middle and lower reaches of the flame formed by the heavy component waste liquid. The combustion air enters the burner through a combustion air duct with multiple holes, which throttle and evenly distribute the combustion air, solving the problem of eccentric combustion air. The air swirl zone formed by the swirl vanes and the combustion flame directed inwards from the annular combustion burner enhance the high temperature and swirling environment. The swirl vanes cause waste liquid droplets to spiral out of the combustion zone with the combustion air, solving the problem of short residence time caused by direct flow of waste liquid in the high-temperature zone in traditional designs. This enhances the mixing effect and improves the waste liquid incineration efficiency. The annular combustion burner, with its tangential holes, allows nozzles to ignite each other, increasing the temperature of the bricks and preheating the waste gas, thus improving combustion efficiency, enhancing burner flame stability, and reducing combustion fuel consumption. This solves the problems of low ignition success rate and poor combustion stability in traditional designs. By introducing exhaust gas into the incinerator through the gaps in the pipe interlayer, the problem of easy clogging of the exhaust gas nozzles is fundamentally solved.

[0020] While achieving the same incineration effect and processing capacity, it consumes less fuel gas, effectively reducing carbon emissions. It boasts high flame stability and good flame rigidity, preventing flame misalignment and ensuring safe and reliable operation. The overall structure is simple and easy to maintain. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the structure of the novel waste gas and waste liquid burner of the present invention.

[0022] Figure 2 Schematic diagram of swirl vane structure

[0023] Figure 3 Schematic diagram of annular combustion-supporting burner

[0024] Figure 4 Appearance drawing of the novel waste gas and waste liquid burner of this invention

[0025] Figure 5 Combustion aid burner nozzle structure diagram

[0026] Among them: 1-Air inlet, 2.1 to 2.5-Exhaust gas inlet, 3.1-Internal brick firing, 3.2-External brick firing, 4-Ignition gun, 5-Annular combustion aid burner, 5.1 Combustion aid burner nozzle, 6-Swirl vane, 7-Burner shell, 8-Light component waste liquid nozzle, 9-Heavy component waste liquid nozzle, 10.1-Heavy component waste liquid inlet, 10.2-Light component waste liquid inlet, 11.1-Type I nozzle, 11.2-Type II nozzle, 11.3-Type III nozzle Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0028] The embodiments of this application will now be described in conjunction with the accompanying drawings.

[0029] A novel waste gas and waste liquid burner includes a burner shell 7, an ignition gun 4, an annular combustion-supporting burner 5, a swirl fan plate 6, a burner brick firing mechanism, and a waste liquid spray gun.

[0030] The burner shell 7 has a multi-layer sleeve structure, with the combustion air duct at the very center and the exhaust gas passage in the outer layer. The multi-layer sleeves are not interconnected. An air inlet 1 is provided at the tail of the burner shell 7. A swirl vane 6 is provided at the center of the burner. An ignition gun 4 and an annular combustion burner 5 are provided around the swirl vane 6.

[0031] Multiple exhaust gas inlets are distributed in the middle section of the burner casing 7;

[0032] The burner housing 7 is located at the end away from the air inlet 1, where the burner is used to burn bricks.

[0033] Combustion air enters through air inlet 1;

[0034] The combustion air duct has several holes, the net flow area of ​​which is smaller than the flow area of ​​air inlet 1. There is no specific limit to the number of holes; the combustion air duct can also be configured as a perforated plate. When the number of holes is less than the preset number, no holes are provided directly opposite air inlet 1. It should be noted that the preset number is determined according to actual needs and can be one or two. The holes serve to throttle and evenly distribute the combustion air, preventing uneven distribution within the burner that could lead to flame eccentricity. Part of the combustion air is ejected directly from the burner, while the other part is swirled after passing through the swirl vane 6 before being ejected.

[0035] After entering the burner, the combustion-supporting fuel gas is ejected from the annular combustion-supporting burner 5. The annular combustion-supporting burner 5 includes several circumferentially arranged combustion-supporting burner nozzles 5.1; each combustion-supporting burner nozzle 5.1 has multiple fuel gas holes, and the opening method and size of the fuel gas holes can be different according to the characteristics of the combustion process. Generally, to ensure combustion stability and combustion effect, the fuel gas holes include three types: the first type of nozzle 11.1 is injected along the tangential direction of the annular combustion-supporting burner, and the flame formed by the first type of nozzle 11.1 can ignite adjacent annular combustion-supporting burner nozzles, improving the flame stability of the combustion-supporting burner. The second type of nozzle 11.2 is radially outward. The second type of nozzle 11.2 is used to incinerate the exhaust gas from the annular gap, thereby increasing the high-temperature environment and accelerating the combustion and decomposition of the exhaust gas. The third type of nozzle 11.3 is radially oriented and forms an angle of 30 to 90 degrees with the direction of the gas flowing out of the first type of nozzle. The third type of nozzle 11.3 forms the main flame of the burner. The injection direction of the three types of gas nozzles forms an angle of 30 to 60 degrees with the nozzle axis.

[0036] Industrial waste gas enters through waste gas inlets, the number of which is determined by the process and the properties of the waste gas itself. After entering the burner, the waste gas passes through the waste gas pipe interlayer and then enters the interlayer between the outer firing brick 3.1 and the inner firing brick 3.2.

[0037] The interlayer fluid area is designed based on the flow velocity. Industrial waste liquid enters through waste liquid inlets, the number of which is determined by the process and the properties of the waste liquid itself. The heavy component waste liquid inlet 10.1 is located at the center of the burner, with a heavy component waste liquid nozzle 9 at its end, from which the heavy component waste liquid is ejected. The light component waste liquid inlet 10.2 is parallel to one side of the heavy component waste liquid inlet 10.1, with a light component waste liquid nozzle 8 at its end, from which easily combustible light component waste liquid is ejected. The light component waste liquid spray gun is angled, directed towards the middle and lower reaches of the flame formed by the heavy component waste liquid.

[0038] This application adopts a sleeve-jacketed form for introducing waste gas, which has the characteristics of simple structure, convenient maintenance and replacement, and easy disassembly.

[0039] The embodiments described above do not constitute a limitation on the scope of protection of this application.

Claims

1. A novel exhaust gas exhaust liquid burner characterized by, The burner comprises a burner shell (7), an ignition gun (4), an annular combustion-supporting burner (5), a cyclone air baffle (6), burner bricks, and a waste liquid injection gun; The burner shell (7) is a multi-layer sleeve structure, with a combustion-supporting air pipe in the center and an exhaust gas passage in the outer layer, and the multi-layer sleeves are not connected to each other; The tail of the burner shell (7) is provided with an air pipe opening (1); the center of the burner is provided with a cyclone air baffle (6); the cyclone air baffle (6) is provided with an ignition gun (4) and an annular combustion-supporting burner (5) around it; A plurality of exhaust gas pipe openings are distributed in the middle section of the burner shell (7); The burner shell (7) is provided with burner bricks at the end away from the air pipe opening (1).

2. The burner of claim 1, wherein The combustion-supporting air pipe is provided with a plurality of holes, and the net flow area of the holes is smaller than the flow area of the air pipe opening (1); When the number of holes is less than the preset number, no holes are arranged in the direction opposite to the air pipe opening (1).

3. The burner of claim 1, wherein The annular combustion-supporting burner (5) comprises a plurality of combustion-supporting burner nozzles (5.1) arranged circumferentially; A plurality of fuel gas holes are arranged on the combustion-supporting burner nozzle (5.1); The fuel gas holes include three types: the first type of injection hole (11.1) has an injection direction along the tangent direction of the annular combustion-supporting burner; the second type of injection hole (11.2) has a radial outward direction; The third type of injection hole (11.3) has a radial direction, and the direction of the fuel gas flowing out of the first type of injection hole forms an angle of 30-90° with the direction of the fuel gas flowing out of the third type of injection hole; The third type of injection hole (11.3) forms the main flame of the burner; the injection directions of the three types of fuel gas injection holes form an angle of 30-60° with the axial direction of the nozzle.

4. The burner of claim 1, wherein The heavy component waste liquid pipe opening (10.1) is arranged at the center of the burner, and the end is provided with a heavy component waste liquid nozzle (9); The light component waste liquid pipe opening (10.2) is arranged parallel to one side of the heavy component waste liquid pipe opening (10.1), and the end is provided with a light component waste liquid nozzle (8); The light component waste liquid injection gun has an angle and is directed to the middle and downstream positions of the flame formed by the heavy component waste liquid.

Images