WO2020237680A1 - Gaseous fuel burner - Google Patents

Gaseous fuel burner Download PDF

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Publication number
WO2020237680A1
WO2020237680A1 PCT/CN2019/089684 CN2019089684W WO2020237680A1 WO 2020237680 A1 WO2020237680 A1 WO 2020237680A1 CN 2019089684 W CN2019089684 W CN 2019089684W WO 2020237680 A1 WO2020237680 A1 WO 2020237680A1
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WO
WIPO (PCT)
Prior art keywords
oxidant
fuel
supply system
passage
outlet end
Prior art date
Application number
PCT/CN2019/089684
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French (fr)
Chinese (zh)
Inventor
阎韬
奇亚瓦·瑞米
万凯姆潘·彼得
刘奔
侯蒙
赵春茹
Original Assignee
乔治洛德方法研究和开发液化空气有限公司
阎韬
奇亚瓦·瑞米
万凯姆潘·彼得
刘奔
侯蒙
赵春茹
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Application filed by 乔治洛德方法研究和开发液化空气有限公司, 阎韬, 奇亚瓦·瑞米, 万凯姆潘·彼得, 刘奔, 侯蒙, 赵春茹 filed Critical 乔治洛德方法研究和开发液化空气有限公司
Priority to PCT/CN2019/089684 priority Critical patent/WO2020237680A1/en
Publication of WO2020237680A1 publication Critical patent/WO2020237680A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply

Definitions

  • the present invention relates to a combustion equipment, in particular to a gas fuel burner and an operating method thereof, in particular to a gas fuel burner for adjusting the flame length and direction, area, rigidity and local atmosphere.
  • the present invention contemplates a gaseous fuel burner, which can adjust the flame length and direction, size, stiffness and local atmosphere, combustion speed can also be controlled to reduce NO x (nitrogen oxide) product.
  • the present invention provides a gas fuel burner, the burner comprising:
  • the fuel-oxidizer supply system, the first oxidizer supply system, and the second oxidizer supply system are respectively defined by a refractory unit and metal parts;
  • the first oxidizer supply system is located on one side of the fuel-oxidizer supply system, and the second oxidizer supply system is located on the other side of the fuel-oxidizer supply system;
  • the first oxidant supply system includes a first oxidant passage
  • the second oxidant supply system includes a second oxidant passage
  • the outlet end of the first oxidant passage is provided with a first turning structure, and the first turning structure makes the outlet end of the first oxidant passage and the extension line of the body of the first oxidant passage form a first offset angle, and The offset angle is less than 90°;
  • the outlet end of the second oxidant passage is provided with a second turning structure, and the second turning structure makes the outlet end of the second oxidant passage and the extension line of the second oxidant passage form a second deviation Set angle, and the second offset angle is less than 90°;
  • the fuel-oxidizer supply system includes: a fuel-oxidizer passage and a fuel nozzle arranged in the fuel-oxidizer passage, wherein:
  • the fuel nozzle includes a connecting part and at least two fuel injection pipes.
  • the connecting part is provided with a fuel flow distribution chamber.
  • the gas fuel enters the fuel flow distribution chamber from the inlet end of the connection part, and passes through the fuel flow distribution chamber after being distributed. Outflow from the outlet end of each fuel injection pipe;
  • the inner diameter of the fuel-oxidant passage is larger than the outer diameter of the fuel injection pipe; the gap between the fuel-oxidant passage and the fuel injection pipe is 1-8mm, preferably 2-6mm.
  • a flow guiding component is arranged in the fuel gas flow distribution cavity for distributing gas fuel to each injection pipe.
  • the first offset angle is 1-15°.
  • the first offset angle is 1.5-8°.
  • the second offset angle is 0-15°.
  • the second offset angle is 0-4°.
  • the first offset angle and the second offset angle are not equal.
  • the outlet end of the fuel injection pipe has a turning structure, so that it has a third offset angle with the body extension of the fuel injection pipe, and the third offset angle is less than 90°.
  • the third offset angle is less than 20°.
  • the fuel injection pipes are symmetrically distributed along a symmetric center line, and the outlet end of the fuel injection pipe faces the symmetric center line of the fuel injection pipe.
  • the first oxidant supply system is composed of two or more first oxidant passages arranged symmetrically, and has a first symmetrical centerline.
  • the outlet end of the first oxidant passage is also arranged toward or away from the first symmetric centerline.
  • the second oxidant supply system is composed of two or more second oxidant passages arranged symmetrically, and has a second symmetrical centerline.
  • the outlet end of the second oxidant passage is also disposed toward or away from the second symmetric centerline.
  • the outlet end of the fuel-oxidant passage, the outlet end of the first oxidant passage and/or the outlet end of the second oxidant passage are provided with a diameter reducing structure.
  • the burner further includes a third control unit for adjusting the flow rate and flow rate of the oxidant in the first oxidizer supply system, the second oxidizer supply system, and the fuel-oxidizer supply system.
  • a third control unit for adjusting the flow rate and flow rate of the oxidant in the first oxidizer supply system, the second oxidizer supply system, and the fuel-oxidizer supply system.
  • the burner further includes a fourth control unit for adjusting the oxidant ratio of each first oxidant passage.
  • the burner further includes a fifth control unit for controlling the oxidant ratio of each second oxidant passage.
  • the burner further includes a sixth control unit for controlling the fuel ratio of each fuel injection pipe.
  • the metal piece includes:
  • the second control unit and
  • the first control unit can control the communication between the first connection end and the second connection end to adjust the flow and flow rate of the oxidant in the first oxidant passage and the second oxidant passage;
  • the second control unit can control the first connection end and the fuel- The oxidant passage is connected to control the flow and flow rate of the oxidant in the fuel-oxidant passage.
  • the first control unit and the second control unit both select automatic valves or manual valves.
  • the cross-sectional shape of the first oxidant passage is circular, elliptical, square or irregular; the cross-sectional shape of the second oxidant passage is circular, elliptical, square or irregular. Shape; the cross-sectional shape of the fuel-oxidant passage is round, oval, square or irregular.
  • the oxidant of the first oxidant system is selected from oxygen, air or oxygen-enriched air
  • the oxidant of the second oxidant system is selected from oxygen, air or oxygen-enriched air
  • the oxidant of the fuel-oxidant supply system is selected Oxygen, air or oxygen-enriched air.
  • the fuel of the fuel-oxidant supply system is gas fuel.
  • the gas fuel burner provided by the present invention can realize the combustion effects such as adjusting the flame length and direction, controlling the combustion speed, and reducing NOx products, specifically:
  • the local oxidation and reduction atmosphere of the kiln can be adjusted to avoid local high temperature
  • the flame coverage area is adjustable
  • Fig. 1 is a schematic structural diagram of a gas fuel burner used in Examples 1-4 of the present invention.
  • FIG. 2 is a schematic diagram of the structure of the fuel-oxidizer supply system 11, the first oxidizer supply system 12, and the second oxidizer supply system 13 defined by the refractory unit and metal parts of the present invention.
  • Figure 3 is a right side view of Figure 2 (viewed from the direction of the fuel or oxidizer inlet).
  • Figure 4 is a left side view of Figure 2 (viewed from the direction of the fuel or oxidizer outlet).
  • FIG. 5 is a schematic diagram of the structure of the fuel nozzle of Embodiment 1 of the present invention.
  • Figure 6a is a schematic diagram of the influence of increasing the proportion of oxidant in the upper first oxidant passage on the flame
  • Figure 6b is a schematic diagram of the influence of increasing the proportion of oxidant in the lower second oxidant passage on the flame.
  • Fig. 7a is a schematic structural diagram of a fuel nozzle of Embodiment 3 of the present invention.
  • Fig. 7b is a schematic structural diagram of another fuel nozzle of the present invention.
  • Figure 8 shows the effect of the horseshoe flame cycle in the horseshoe flame glass furnace on the conventional oxygen burners on both sides.
  • Fig. 9 is a schematic diagram of the structure of adding the pure oxygen burner of the present invention to boost the horseshoe flame glass furnace.
  • Fig. 10 is a plan view of a fuel nozzle of a gas fuel burner of Example 4 of the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present invention, “multiple” means two or more than two, unless otherwise clearly specified.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • installed can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • gas fuel As used in the present invention, “gas fuel”, “gaseous fuel”, “fuel”, and “fuel gas flow” have the same meaning and can be used interchangeably.
  • control unit for example, the first to sixth control units, can select an automatic valve or a manual valve.
  • the "inner diameter of the fuel-oxidant passage is greater than the outer diameter of the fuel injection pipe” means that the fuel-oxidant passage can contain a fuel injection pipe for gas fuel to flow in the fuel injection pipe and surround the oxidizer On the outer wall of the injection pipe, a fuel-oxidant flow is formed.
  • Those skilled in the art can select the size, material, processing technology, relative position, etc. of the fuel-oxidant passage and the fuel injection pipe as required.
  • a gas fuel burner of the present invention includes:
  • the fuel-oxidant supply system 11, the first oxidizer supply system 12, and the second oxidizer supply system 13 are respectively defined by the refractory unit and metal parts.
  • the first oxidizer supply system 12 and the second oxidizer supply system 13 are respectively located on both sides of the fuel-oxidizer supply system 11, that is, the first oxidizer supply system 12 is located on one side of the fuel-oxidizer supply system 11, and the second oxidizer supply system 13 Located on the opposite side. As exemplarily shown in FIG. 1, the first oxidizer supply system 12 and the second oxidizer supply system 13 are respectively located on the upper and lower sides of the fuel-oxidizer supply system 11.
  • the first oxidant supply system 12 includes two symmetrically arranged first oxidant passages, the two first oxidant passages have a first symmetrical centerline, and the first oxidant passage has a first inlet end 1211. And the first outlet end 1212.
  • the second oxidant supply system 13 includes two symmetrically arranged second oxidant passages, the two second oxidant passages have a second symmetrical centerline, and the second oxidant passage has a second inlet end 1311 and a second outlet end 1312.
  • the fuel-oxidizer supply system 11 includes two fuel-oxidizer passages and a fuel nozzle 112.
  • the fuel-oxidant passage has a third inlet end 1111 and a third outlet end 1112.
  • the fuel nozzle 112 has a connecting portion 1121 and two fuel injection pipes 1122 arranged in parallel and symmetrically.
  • the connecting portion 1121 is provided with a fuel flow distribution chamber 11211, and each fuel injection pipe 1122 is arranged in a fuel-oxidant passage.
  • the fuel flow distribution chamber 11211 is entered from the inlet end 11212 of the connecting portion 1121, and flows out through the outlet ends 1124 of each fuel nozzle after the flow distribution.
  • the inner diameter of the fuel-oxidant passage is greater than the outer diameter of the fuel injection pipe 1122, so that there is a gap between the inner wall of the fuel-oxidant passage and the outer wall of the fuel injection pipe 1122, and the gap distance r (see Figure 4) is 1-8mm, preferably 2- 6mm to facilitate the passage of the oxidizer and facilitate the assembly of the fuel injection pipe and the fuel-oxidizer passage.
  • the fuel-oxidant passage is arranged coaxially with the fuel injection pipe therein, that is, the oxidant passage evenly surrounds the fuel injection pipe 1122.
  • One of the purposes of the oxidant passage surrounding each fuel injection pipe 1122 is to clean the passage with oxidant to prevent particles from the combustion atmosphere from entering the combustor to form deposits, which may cause malfunction and damage to the combustor.
  • several positioning components can be arranged circumferentially in the annular oxidant channel.
  • the outlet end 1124 of the fuel nozzle is located in the fuel-oxidizer passage, that is, the third outlet end 1112 of the fuel-oxidizer passage is located outside the outlet end 1124 of the fuel nozzle, and the fuel at the outlet end 1124 of the fuel nozzle is connected to the fuel-oxidizer passage.
  • the oxidant in the passage is mixed to advance the point where the combustion starts.
  • the fuel-oxidant passage and the fuel injection pipe therein are arranged eccentrically, that is, they are arranged differently.
  • a positioning member may be provided circumferentially in the oxidant channel.
  • the first outlet end 1212 of the first oxidant passage has a first turning structure 1213.
  • the first turning structure 1213 makes the first outlet end 1212 turn downward (that is, downward toward the fuel-oxidizer passage), and has a first offset angle with the body extension line of the first oxidizer passage.
  • Less than 90° preferably 1-15°, more preferably 1.5-8°
  • the second outlet end 1312 of the second oxidant passage has a second turning structure 1313, and the second turning structure 1313 makes the second outlet end 1312 turn upward (toward the fuel-oxidant passage), and is connected to the second oxidant passage.
  • the body extension line has a second offset angle, which is less than 90° (preferably 0-15°, more preferably 0-4°).
  • the third outlet end 1112 of the fuel-oxidant passage has a turning structure (not shown in the figure), so that it has a third offset angle with the body extension line of the fuel-oxidant passage.
  • the third offset angle is less than 90°, which is more Preferably, the third offset angle is less than 20°.
  • the outlet end 1124 of the fuel nozzle nested in the fuel-oxidizer passage also has a turning structure, so that the outlet end 1124 of the fuel nozzle and the body extension line of the fuel injection pipe 1122 have a third offset angle.
  • the two fuel injection pipes 1122 are symmetrically distributed, and the outlet ends 1124 of the two fuel nozzles are simultaneously turned toward or away from the symmetrical centerline of the fuel injection pipe.
  • the first outlet end of the first oxidant passage is also arranged toward or away from the first symmetric centerline. In some embodiments, the first outlet end may face downward, inward, or outward at the same time.
  • the second outlet end of the second oxidant passage is also arranged toward or away from the second symmetric centerline. In some embodiments, the second outlet end may face upward, inward, or outward at the same time.
  • At least one of the third outlet end 1112 of the fuel-oxidant passage 1112, the first outlet end 1212 of the first oxidant passage, and the second outlet end 1312 of the second oxidant passage has a diameter reducing structure.
  • the burner further includes several control units to adjust and control the flow and flow rate of the oxidant in the first oxidizer supply system, the second oxidizer supply system, and the fuel-oxidizer supply system, so that the first oxidizer supply system, The oxidizer in the second oxidizer supply system and the fuel-oxidizer supply system maintains the required ratio.
  • the burner further includes a control unit that controls the proportion of oxidant in each first oxidant passage in the first oxidant supply system.
  • the burner further includes a control unit that controls the proportion of oxidant in each second oxidant passage in the second oxidant supply system.
  • the combustor further includes a control unit that controls the fuel ratio of each fuel injection pipe in the fuel-oxidant supply system.
  • the metal piece 20 includes: a first connecting end (not shown in the figure) that communicates with and fixes the first oxidant passage, and a second connecting end (not shown in the figure) that connects and fixes the second oxidant passage ,
  • two control units realize the proportional control of the oxidant in the first oxidant passage (that is, the upper passage), the fuel-oxidant passage (that is, the middle passage), and the second oxidant passage (that is, the lower passage).
  • Both the first control unit 32 and the second control unit 31 select one of an automatic valve or a manual valve to achieve required reversal and/or oxidant ratio regulation.
  • the oxidants in the fuel-oxidizer supply system 11, the first oxidizer supply system 12, and the second oxidizer supply system 13 are independent of each other before their respective ejection outlets, and do not mix.
  • the oxidant is input through the total inlet 30, and then the flow is proportionally distributed through the first control unit 32 and the second control unit 31, such as controlling the ratio of the oxidant in the first oxidant supply system 12 It is 60% (volume ratio), the oxidizer ratio in the second oxidant supply system 13 is 30% (volume ratio), and the oxidizer ratio in the fuel-oxidizer supply system 11 is 10% (volume ratio).
  • the first offset angle is not equal to the second offset angle, so that the mixing position and time of the oxidant in the first oxidant passage and the oxidant and fuel in the second oxidant passage are different.
  • the burner under the same glass melting process conditions (the burner has a first steering structure and a second steering structure, wherein the first steering structure has a first offset angle, The second turning structure has a second offset angle) to evaluate the combustion effect, and achieve the expected effect: increasing the proportion of oxidant in the upper first oxidant passage can achieve the flame closer to the glass surface, as shown in Figure 6a; increase the lower second oxidant passage The ratio of oxidant can realize that the flame is farther away from the glass surface, as shown in Figure 6b.
  • the outlet end 1124 of the fuel nozzle has a turning structure, so that the outlet end 1124 of the fuel nozzle and the body extension line of the fuel injection pipe 1122 have a third offset angle.
  • the third offset angle is 0-20°.
  • the connecting portion 1121 of the fuel nozzle may also be provided with a control unit to control the proportion of fuel in each fuel injection pipe.
  • the cross section of the fuel flow distribution cavity 11211 of the connecting portion 1121 in FIG. 7a is Y-shaped, and the Y-shaped structure functions as a flow guide member.
  • variable diameter structure 1113 is provided in the fuel-oxidant passage.
  • the outlet end of the first oxidant passage is provided with a diameter reducing structure.
  • the outlet end of the second oxidant passage is provided with a diameter reducing structure.
  • the cross-sectional shape of the first oxidant passage is circular, elliptical, square or irregular shape; the cross-sectional shape of the second oxidant passage is circular, elliptical, square or irregular;
  • the cross-sectional shape of the fuel-oxidant passage is round, oval, square or irregular.
  • the effective cross-sectional areas of the first oxidant passage, the second oxidant passage, and the fuel-oxidant passage may be the same or different.
  • the oxidant of the first oxidizer system selects oxygen, air or oxygen-enriched air
  • the oxidant of the second oxidizer system selects oxygen, air or oxygen-enriched air
  • the oxidant of the fuel-oxidant supply system selects oxygen, air or oxygen.
  • the oxidant can be at room temperature, or it can be heated, and the temperature ranges from 5°C to 700°C.
  • the fuel of the fuel-oxidant supply system is gas fuel.
  • the method of using the gas fuel burner of the present invention is as follows:
  • the gaseous fuel is delivered from the fuel inlet of the fuel-oxidant supply system located in the middle of the burner to form a gaseous fuel flow, which passes through the internal fuel injection pipe to the fuel outlet; the outer wall of the fuel injection pipe and the fuel-oxidant passage are controlled by the second control unit The flow rate and flow rate of the oxidant are controlled to control the starting point of combustion; the first control unit controls the communication between the first oxidant passage and the second oxidant passage to adjust the oxidant in the first oxidant passage and the second oxidant passage.
  • Flow rate and flow rate make the oxidant and fuel mix according to the required time and position, and maintain the required flame direction; and control the supply of oxidant to the fuel flow direction, so that the oxidant and fuel mix according to the required time and position, and maintain the required flame direction And horizontal angle.
  • the burner of the present invention achieves the purposes of lengthening the flame, increasing the flame coverage area, keeping the flame hot spot away from the refractory material on the side wall, and avoiding local overheating of the flame by adjusting the oxidizer distribution, direction, and oxidizer-fuel direction. It can be used to adjust the flame length , Flame coverage area, rigidity and flame local atmosphere and other application scenarios. The following uses specific examples to illustrate its application.
  • the gas fuel burner shown in Fig. 1 is used.
  • the first outlet end of the first oxidant passage of the burner has a first offset angle, and the first offset angle is selected to be 2-8°
  • the second outlet end of the second oxidant passage of the combustor has a second offset angle, and the second offset angle is selected from 1-5°.
  • the nozzle structure is shown in Figure 5, that is, the outlet end of the nozzle does not have a turning structure .
  • the oxidant in this embodiment adopts pure oxygen, which is input from the main inlet 30, and the oxidant in the first oxidant supply system, the second oxidant supply system and the fuel-oxidant supply system are respectively controlled by the first control unit 32 and the second control unit 31 Flow distribution, so that the oxidizer and fuel are mixed at the required time and position, and the required flame direction is maintained.
  • the flame In the glass melting process, the flame needs to have different characteristics according to the different requirements of the process.
  • the flame is easy to sweep or impact the material pile.
  • the process purpose of the flame is easy to sweep or impact the material pile.
  • the pure oxygen flame will deflect to the refractory material close to the side wall; due to the need for a pair of regenerators equipped with the horseshoe flame glass furnace Periodic reversal of combustion in order to fully utilize the waste heat of combustion exhaust gas, so that the flame of the pure oxygen burner is periodically deflected with the reversal of the air flame, resulting in unstable hot spots of the molten glass, which is not conducive to the stability of the glass quality.
  • a gas fuel burner (burner power 0.6-1.5MW) with a first offset angle, a second offset angle and a third offset angle of the present invention is used in a horseshoe flame glass kiln Furnace fluxing.
  • the above-mentioned gas fuel burners are arranged on both sides of the air-burning horseshoe flame glass furnace.
  • the oxygen and gas fuel inside the burner can be adjusted left and right with the air flame reversal (horseshoe flame), as shown in Figure 9.
  • the oxygen distribution ratio between the solid dot side and the hollow dot side of the gas fuel burner is 70%: 30% (in terms of volume percentage).
  • the non-deflection length of the flame is extended by 1-2 times, and it also reduces the erosion of the refractory near the burner, avoids the blockage of the regenerator or damage to the grid body, and strengthens the stability of the hot spot of the glass liquid, which is beneficial to Improved glass quality.
  • the connecting portion 1121 includes: a fuel flow distribution chamber 11211, an inlet end 11212 of the connecting portion, and a fuel flow distribution chamber 11212.
  • the guide component 11213 is used to evenly distribute the fuel to the injection pipes, and its cross section is rectangular, which is the same as the cross section of the fuel air distribution cavity 11211.
  • the effective length L of the flow guiding member 11213 should not be less than the diameter D of the inlet end 11212 of the connecting part.
  • the effective length refers to the length that plays a role of diversion.
  • the distance from the central axis of the flow guiding member 11213 to the first end of the fuel flow distribution chamber 11211 is set to a
  • the distance from the central axis of the flow guiding member 11213 to the second end of the fuel flow distribution chamber 11211 is set to b, preferably a/ b ⁇ 1, wherein the first end refers to the end close to the inlet end of the connecting part, and the second end refers to the end far away from the inlet end of the connecting part.
  • a plane perpendicular to the plane where the gas fuel intake direction is located is taken as the projection plane, and the projected area of the guide member 11213 on the projection plane is not less than the cross-sectional area of the inlet end of the connecting portion on the perpendicular orthogonal plane.
  • the cross-section of the guide member can also be in a regular or irregular shape such as a circle, a circle-like shape, an ellipse, a ellipse-like shape, a trapezoid, a triangle, a cone, and the like.
  • the gas fuel burner of the present invention includes multiple oxidizer passages, gas fuel passages, and/or passages shared by the oxidizer and gas fuel, which realizes the selection of different combinations of combustion element conditions such as oxidizer and gas fuel, and realizes adjustment.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

Disclosed is a gaseous fuel burner, containing a refractory unit (10), a metal piece (20), a fuel-oxidant supply system (11) containing a fuel nozzle and a plurality of fuel-oxidant passages, a first oxidant supply system (12) containing a plurality of first oxidant passages, and a second oxidant supply system (13) containing a plurality of second oxidant passages. An outlet end (1212) of each of the first oxidant passages is provided with a first turning structure (1213), such that the outlet end (1212) of the first oxidant passage faces downward, and a first offset angle is formed between the outlet end and an extension line of a body of the first oxidant passage; and an outlet end (1312) of each of the second oxidant passages is provided with a second turning structure (1313), such that the outlet end (1312) of the second oxidant passage faces upward, and a second offset angle is formed between the outlet end and an extension line of a body of the second oxidant passage. The burner can be used for a kiln with a gaseous fuel, such that combustion effects, such as adjusting the length and direction of a flame, controlling combustion speed, and reducing NOX products can be achieved.

Description

一种气体燃料燃烧器A gas fuel burner 技术领域Technical field
本发明涉及一种燃烧设备，具体来说，涉及一种气体燃料燃烧器及其操作方法，尤其涉及一种用于调整火焰长度和方向、面积、刚度和局部气氛的气体燃料燃烧器。The present invention relates to a combustion equipment, in particular to a gas fuel burner and an operating method thereof, in particular to a gas fuel burner for adjusting the flame length and direction, area, rigidity and local atmosphere.
背景技术Background technique
目前市场上已经存在成熟的纯氧-气体燃料燃烧器(oxygen gaseous fuel)以及与其匹配的燃烧器砖，存在操作不灵活、可调范围小、难以适应工艺变化需要等问题。例如：火焰刚性、长度、火焰覆盖面调整范围小；火焰燃烧位置、燃烧速度不可调整；局部燃烧气氛调整范围小；纯氧浓度调整不方便；火焰着火温度下限适应性差；火焰方向(水平或垂直)调整困难。At present, there are mature oxygen-gaseous fuel burners and matching burner bricks on the market, which have problems such as inflexible operation, small adjustable range, and difficulty in adapting to process changes. For example: the adjustment range of flame rigidity, length, flame coverage is small; flame burning position and burning speed cannot be adjusted; local combustion atmosphere adjustment range is small; pure oxygen concentration adjustment is inconvenient; flame ignition temperature lower limit adaptability is poor; flame direction (horizontal or vertical) Adjustment is difficult.
有鉴于此，如何设计一种新的气体燃料燃烧器，以消除现有技术中的上述缺陷和不足，是业内相关技术人员亟待解决的一项课题。In view of this, how to design a new gas fuel burner to eliminate the above-mentioned shortcomings and deficiencies in the prior art is an urgent issue to be solved by relevant technicians in the industry.
发明的公开Disclosure of invention
为了解决上述技术问题，本发明设计了一种气体燃料燃烧器，其能调整火焰长度和方向、面积、刚度和局部气氛，还可以控制燃烧速度、降低NO x(氮氧化物)生成物。 To solve the above technical problem, the present invention contemplates a gaseous fuel burner, which can adjust the flame length and direction, size, stiffness and local atmosphere, combustion speed can also be controlled to reduce NO x (nitrogen oxide) product.
为了达到上述目的，本发明提供了一种气体燃料燃烧器，所述的燃烧器包含：In order to achieve the above objective, the present invention provides a gas fuel burner, the burner comprising:
一耐火单元；A refractory unit;
一金属件；A piece of metal
一燃料-氧化剂供给***；A fuel-oxidant supply system;
一第一氧化剂供给***；和A first oxidant supply system; and
一第二氧化剂供给***；其中，A second oxidant supply system; wherein,
所述燃料-氧化剂供给***、第一氧化剂供给***、第二氧化剂供给***分别由耐火单元及金属件限定；The fuel-oxidizer supply system, the first oxidizer supply system, and the second oxidizer supply system are respectively defined by a refractory unit and metal parts;
所述的第一氧化剂供给***位于燃料-氧化剂供给***的一侧，所述第二氧化剂供给***位于燃料-氧化剂供给***的另一侧；The first oxidizer supply system is located on one side of the fuel-oxidizer supply system, and the second oxidizer supply system is located on the other side of the fuel-oxidizer supply system;
所述的第一氧化剂供给***包括一第一氧化剂通路，所述的第二氧化剂供给***包括一第二氧化剂通路；其中，The first oxidant supply system includes a first oxidant passage, and the second oxidant supply system includes a second oxidant passage; wherein,
所述第一氧化剂通路的出口端设有第一转向结构，该第一转向结构使得该第一氧化剂通路的出口端与第一氧化剂通路的本体延长线构成第一偏置角度，并且该第一偏置角度小 于90°；所述第二氧化剂通路的出口端设有第二转向结构，该第二转向结构使得该第二氧化剂通路的出口端与第二氧化剂通路的本体延长线构成第二偏置角度，并且该第二偏置角度小于90°；The outlet end of the first oxidant passage is provided with a first turning structure, and the first turning structure makes the outlet end of the first oxidant passage and the extension line of the body of the first oxidant passage form a first offset angle, and The offset angle is less than 90°; the outlet end of the second oxidant passage is provided with a second turning structure, and the second turning structure makes the outlet end of the second oxidant passage and the extension line of the second oxidant passage form a second deviation Set angle, and the second offset angle is less than 90°;
所述的燃料-氧化剂供给***包括：一燃料-氧化剂通路和设置在燃料-氧化剂通路中的一燃料喷嘴，其中，The fuel-oxidizer supply system includes: a fuel-oxidizer passage and a fuel nozzle arranged in the fuel-oxidizer passage, wherein:
该燃料喷嘴包括一连接部及至少两条燃料喷射管道，该连接部内设置有一燃料气流分配腔，气体燃料由连接部的入口端进入该燃料气流分配腔，经该燃料气流分配腔分配后分别通过各燃料喷射管道的出口端流出；The fuel nozzle includes a connecting part and at least two fuel injection pipes. The connecting part is provided with a fuel flow distribution chamber. The gas fuel enters the fuel flow distribution chamber from the inlet end of the connection part, and passes through the fuel flow distribution chamber after being distributed. Outflow from the outlet end of each fuel injection pipe;
所述的燃料-氧化剂通路的内径大于燃料喷射管道的外径；所述的燃料-氧化剂通路与燃料喷射管道的间隙为1-8mm，较佳地为2-6mm。The inner diameter of the fuel-oxidant passage is larger than the outer diameter of the fuel injection pipe; the gap between the fuel-oxidant passage and the fuel injection pipe is 1-8mm, preferably 2-6mm.
所述的燃料气流分配腔内设置有一导流部件，用于将气体燃料分配到各喷射管道。A flow guiding component is arranged in the fuel gas flow distribution cavity for distributing gas fuel to each injection pipe.
较佳地，所述的第一偏置角度为1-15°。Preferably, the first offset angle is 1-15°.
更优地，所述的第一偏置角度为1.5-8°。More preferably, the first offset angle is 1.5-8°.
较佳地，所述的第二偏置角度为0-15°。Preferably, the second offset angle is 0-15°.
更优地，所述的第二偏置角度为0-4°。More preferably, the second offset angle is 0-4°.
较佳地，第一偏置角度与第二偏置角度不相等。Preferably, the first offset angle and the second offset angle are not equal.
较佳地，所述燃料喷射管道的出口端具有转向结构，使其与燃料喷射管道的本体延长线具有第三偏置角度，该第三偏置角度小于90°。Preferably, the outlet end of the fuel injection pipe has a turning structure, so that it has a third offset angle with the body extension of the fuel injection pipe, and the third offset angle is less than 90°.
较佳地，所述的第三偏置角度小于20°。Preferably, the third offset angle is less than 20°.
较佳地，所述的燃料喷射管道沿对称中心线对称分布，所述燃料喷射管道的出口端朝向该燃料喷射管道的对称中心线。Preferably, the fuel injection pipes are symmetrically distributed along a symmetric center line, and the outlet end of the fuel injection pipe faces the symmetric center line of the fuel injection pipe.
较佳地，所述的第一氧化剂供给***由两路以上的第一氧化剂通路左右对称设置构成，具有第一对称中心线。Preferably, the first oxidant supply system is composed of two or more first oxidant passages arranged symmetrically, and has a first symmetrical centerline.
较佳地，第一转向结构中，所述第一氧化剂通路的出口端还朝向或背离第一对称中心线设置。Preferably, in the first turning structure, the outlet end of the first oxidant passage is also arranged toward or away from the first symmetric centerline.
较佳地，所述的第二氧化剂供给***由两路以上的第二氧化剂通路左右对称设置构成，具有第二对称中心线。Preferably, the second oxidant supply system is composed of two or more second oxidant passages arranged symmetrically, and has a second symmetrical centerline.
较佳地，第二转向结构中，所述第二氧化剂通路的出口端还朝向或背离第二对称中心线设置。Preferably, in the second turning structure, the outlet end of the second oxidant passage is also disposed toward or away from the second symmetric centerline.
较佳地，所述的燃料-氧化剂通路的出口端、第一氧化剂通路的出口端和/或第二氧化剂通路的出口端设有一变径结构。Preferably, the outlet end of the fuel-oxidant passage, the outlet end of the first oxidant passage and/or the outlet end of the second oxidant passage are provided with a diameter reducing structure.
较佳地，所述的燃烧器还包含一第三控制单元，所述第三控制单元用于调整第一氧化剂供给***、第二氧化剂供给***及燃料-氧化剂供给***中氧化剂的流量和流速。Preferably, the burner further includes a third control unit for adjusting the flow rate and flow rate of the oxidant in the first oxidizer supply system, the second oxidizer supply system, and the fuel-oxidizer supply system.
较佳地，所述的燃烧器还包含第四控制单元，用于调整各第一氧化剂通路的氧化剂比例。Preferably, the burner further includes a fourth control unit for adjusting the oxidant ratio of each first oxidant passage.
较佳地，所述的燃烧器还包含第五控制单元，用于控制各第二氧化剂通路的氧化剂比例。Preferably, the burner further includes a fifth control unit for controlling the oxidant ratio of each second oxidant passage.
较佳地，所述的燃烧器还包含第六控制单元，用于控制各燃料喷射管道的燃料比例。Preferably, the burner further includes a sixth control unit for controlling the fuel ratio of each fuel injection pipe.
较佳地，所述的金属件包含：Preferably, the metal piece includes:
连通并固定第一氧化剂通路的第一连接端；Communicating and fixing the first connecting end of the first oxidant passage;
连通并固定第二氧化剂通路的第二连接端；Communicating and fixing the second connecting end of the second oxidant passage;
第一控制单元；First control unit
第二控制单元；及The second control unit; and
安装固定燃料喷嘴的安装孔；Mounting holes for fixing fuel nozzles;
其中，第一控制单元能控制第一连接端与第二连接端的连通，以调整第一氧化剂通路、第二氧化剂通路中的氧化剂流量和流速；第二控制单元能控制第一连接端与燃料-氧化剂通路的连通，以控制燃料-氧化剂通路中氧化剂的流量和流速。Wherein, the first control unit can control the communication between the first connection end and the second connection end to adjust the flow and flow rate of the oxidant in the first oxidant passage and the second oxidant passage; the second control unit can control the first connection end and the fuel- The oxidant passage is connected to control the flow and flow rate of the oxidant in the fuel-oxidant passage.
较佳地，所述的第一控制单元、第二控制单元均选择自动阀或手动阀。Preferably, the first control unit and the second control unit both select automatic valves or manual valves.
较佳地，所述的第一氧化剂通路的横截面形状为圆形、椭圆形、方形或不规则形状；所述的第二氧化剂通路的横截面形状为圆形、椭圆形、方形或不规则形状；所述的燃料-氧化剂通路的横截面形状为圆形、椭圆形、方形或不规则形状。Preferably, the cross-sectional shape of the first oxidant passage is circular, elliptical, square or irregular; the cross-sectional shape of the second oxidant passage is circular, elliptical, square or irregular. Shape; the cross-sectional shape of the fuel-oxidant passage is round, oval, square or irregular.
较佳地，所述的第一氧化剂***的氧化剂选择氧气、空气或富氧空气，所述的第二氧化剂***的氧化剂选择氧气、空气或富氧空气；所述燃料-氧化剂供给***的氧化剂选择氧气、空气或富氧空气。Preferably, the oxidant of the first oxidant system is selected from oxygen, air or oxygen-enriched air, the oxidant of the second oxidant system is selected from oxygen, air or oxygen-enriched air; the oxidant of the fuel-oxidant supply system is selected Oxygen, air or oxygen-enriched air.
较佳地，所述燃料-氧化剂供给***的燃料为气体燃料。Preferably, the fuel of the fuel-oxidant supply system is gas fuel.
本发明提供的气体燃料燃烧器，能实现调整火焰长度和方向、控制燃烧速度、降低NOx生成物等燃烧效果，具体来说：The gas fuel burner provided by the present invention can realize the combustion effects such as adjusting the flame length and direction, controlling the combustion speed, and reducing NOx products, specifically:
1.可调整火焰长度、火焰刚性、火焰水平或垂直角度；1. Adjustable flame length, flame rigidity, flame horizontal or vertical angle;
2.窑炉局部氧化和还原气氛可调整，避免局部高温；2. The local oxidation and reduction atmosphere of the kiln can be adjusted to avoid local high temperature;
3.火焰覆盖面积可调；3. The flame coverage area is adjustable;
4.提高热效率，降低单位产品燃料消耗；4. Improve thermal efficiency and reduce fuel consumption per unit product;
5.增强对燃料性能的适应能力；5. Enhance adaptability to fuel performance;
6.延长窑炉等工艺设备寿命；6. Extend the life of process equipment such as kilns;
7.提高产量，改善产品质量；7. Increase output and improve product quality;
8.降低废气排放以及NOx生成。8. Reduce exhaust emissions and NOx generation.
附图的简要说明Brief description of the drawings
图1为本发明实施例1-4所用的气体燃料燃烧器的结构示意图。Fig. 1 is a schematic structural diagram of a gas fuel burner used in Examples 1-4 of the present invention.
图2为本发明由耐火单元及金属件限定的燃料-氧化剂供给***11、第一氧化剂供给***12、第二氧化剂供给***13的结构示意图。2 is a schematic diagram of the structure of the fuel-oxidizer supply system 11, the first oxidizer supply system 12, and the second oxidizer supply system 13 defined by the refractory unit and metal parts of the present invention.
图3为图2的右视图(从燃料或氧化剂入口方向观察)。Figure 3 is a right side view of Figure 2 (viewed from the direction of the fuel or oxidizer inlet).
图4为图2的左视图(从燃料或氧化剂出口方向观察)。Figure 4 is a left side view of Figure 2 (viewed from the direction of the fuel or oxidizer outlet).
图5为本发明的实施例1的燃料喷嘴的结构示意图。5 is a schematic diagram of the structure of the fuel nozzle of Embodiment 1 of the present invention.
图6a为增加上部第一氧化剂通路中氧化剂比例对火焰的影响示意图；图6b为增加下部第二氧化剂通路中氧化剂比例对火焰的影响示意图。Figure 6a is a schematic diagram of the influence of increasing the proportion of oxidant in the upper first oxidant passage on the flame; Figure 6b is a schematic diagram of the influence of increasing the proportion of oxidant in the lower second oxidant passage on the flame.
图7a为本发明的实施例3的燃料喷嘴的结构示意图。Fig. 7a is a schematic structural diagram of a fuel nozzle of Embodiment 3 of the present invention.
图7b为本发明的另一种燃料喷嘴的结构示意图。Fig. 7b is a schematic structural diagram of another fuel nozzle of the present invention.
图8为马蹄焰玻璃窑炉中马蹄焰周期变化对两侧常规氧气燃烧器的影响。Figure 8 shows the effect of the horseshoe flame cycle in the horseshoe flame glass furnace on the conventional oxygen burners on both sides.
图9为马蹄焰玻璃窑炉中增加本发明的纯氧燃烧器助熔的结构示意图。Fig. 9 is a schematic diagram of the structure of adding the pure oxygen burner of the present invention to boost the horseshoe flame glass furnace.
图10为本发明的实施例4的气体燃料燃烧器的燃料喷嘴的俯视图。Fig. 10 is a plan view of a fuel nozzle of a gas fuel burner of Example 4 of the present invention.
实现本发明的最佳方式The best way to implement the invention
在以下具体实施例的说明中，为了清楚展示本发明的结构及工作方式，将借助诸多方向性词语进行描述，但是应当将“前”、“后”、“左”、“右”、“外”、“内”、“向外”、“向内”、“轴向”、“径向”等词语理解为方便用语，而不应当理解为限定性词语。In the description of the following specific embodiments, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "rear", "left", "right", and "outer" "Inner", "Outward", "Inward", "Axial", "Radial" and other words are understood as convenient terms and should not be understood as restrictive terms.
在以下具体实施例的说明中，需要理解的是，术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不理解为对本发明的限制。In the description of the following specific embodiments, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" "," "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description , Rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore is not understood as a limitation to the present invention.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或隐含地包括一个或多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的规定。In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "multiple" means two or more than two, unless otherwise clearly specified.
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接连接，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
如本发明所用，“气体燃料”、“气态燃料”、“燃料”、“燃料气流”具有相同含义，可替换使用。As used in the present invention, "gas fuel", "gaseous fuel", "fuel", and "fuel gas flow" have the same meaning and can be used interchangeably.
如本发明所用，所述“控制单元”，例如第一至第六控制单元可选择自动阀或手动阀。As used in the present invention, the "control unit", for example, the first to sixth control units, can select an automatic valve or a manual valve.
如本发明所用，所述“燃料-氧化剂通路的内径大于燃料喷射管道的外径”指的是燃料-氧化剂通路中能够容纳燃料喷射管道，供气体燃料在燃料喷射管道中流动，并且使氧化剂环绕在喷射管道外壁，形成燃料-氧化剂流。本领域技术人员可根据需要选择燃料-氧化剂通路与燃料喷射管道的尺寸、材料、加工工艺、相对位置等。As used in the present invention, the "inner diameter of the fuel-oxidant passage is greater than the outer diameter of the fuel injection pipe" means that the fuel-oxidant passage can contain a fuel injection pipe for gas fuel to flow in the fuel injection pipe and surround the oxidizer On the outer wall of the injection pipe, a fuel-oxidant flow is formed. Those skilled in the art can select the size, material, processing technology, relative position, etc. of the fuel-oxidant passage and the fuel injection pipe as required.
以下结合附图和实施例对本发明的技术方案做进一步的说明。The technical solution of the present invention will be further described below with reference to the drawings and embodiments.
如图1和图2所示，本发明的一种气体燃料燃烧器包含：As shown in Figures 1 and 2, a gas fuel burner of the present invention includes:
耐火单元10； Refractory unit 10;
金属件20；及 Metal parts 20; and
分别由耐火单元及金属件限定的燃料-氧化剂供给***11、第一氧化剂供给***12、第二氧化剂供给***13。The fuel-oxidant supply system 11, the first oxidizer supply system 12, and the second oxidizer supply system 13 are respectively defined by the refractory unit and metal parts.
第一氧化剂供给***12、第二氧化剂供给***13分别位于燃料-氧化剂供给***11的两侧，即第一氧化剂供给***12位于燃料-氧化剂供给***11的一侧，而第二氧化剂供给***13位于相反侧。示例性地如图1所示，第一氧化剂供给***12、第二氧化剂供给***13分别位于燃料-氧化剂供给***11的上部侧和下部侧。The first oxidizer supply system 12 and the second oxidizer supply system 13 are respectively located on both sides of the fuel-oxidizer supply system 11, that is, the first oxidizer supply system 12 is located on one side of the fuel-oxidizer supply system 11, and the second oxidizer supply system 13 Located on the opposite side. As exemplarily shown in FIG. 1, the first oxidizer supply system 12 and the second oxidizer supply system 13 are respectively located on the upper and lower sides of the fuel-oxidizer supply system 11.
如图3和图4所示，第一氧化剂供给***12包含两个对称设置的第一氧化剂通路，该两个第一氧化剂通路具有第一对称中心线，第一氧化剂通路具有第一入口端1211及第一出口端1212。第二氧化剂供给***13包含两个对称设置的第二氧化剂通路，该两个第二氧化剂通路具有第二对称中心线，该第二氧化剂通路具有第二入口端1311和第二出口端1312。As shown in Figures 3 and 4, the first oxidant supply system 12 includes two symmetrically arranged first oxidant passages, the two first oxidant passages have a first symmetrical centerline, and the first oxidant passage has a first inlet end 1211. And the first outlet end 1212. The second oxidant supply system 13 includes two symmetrically arranged second oxidant passages, the two second oxidant passages have a second symmetrical centerline, and the second oxidant passage has a second inlet end 1311 and a second outlet end 1312.
如图2、图3、图5所示，燃料-氧化剂供给***11包含两个燃料-氧化剂通路和燃料喷嘴112。燃料-氧化剂通路具有第三入口端1111及第三出口端1112。该燃料喷嘴112具有连接部1121及两个平行对称设置的燃料喷射管道1122，该连接部1121内设置有燃料气流分配腔11211，每个燃料喷射管道1122设置在一个燃料-氧化剂通路内，气体燃料由连接部1121的入口端11212进入该燃料气流分配腔11211，经气流分配后分别通过各燃料喷嘴的出口端1124流出。燃料-氧化剂通路的内径大于燃料喷射管道1122的外径，使得燃料-氧化剂通路的内壁与燃料喷射管道1122外壁之间具有间隙，该间隙距离r(见图4)为1-8mm，优选2-6mm，以便于氧化剂通过且方便燃料喷射管道与燃料-氧化剂通路的组装。As shown in FIGS. 2, 3 and 5, the fuel-oxidizer supply system 11 includes two fuel-oxidizer passages and a fuel nozzle 112. The fuel-oxidant passage has a third inlet end 1111 and a third outlet end 1112. The fuel nozzle 112 has a connecting portion 1121 and two fuel injection pipes 1122 arranged in parallel and symmetrically. The connecting portion 1121 is provided with a fuel flow distribution chamber 11211, and each fuel injection pipe 1122 is arranged in a fuel-oxidant passage. The fuel flow distribution chamber 11211 is entered from the inlet end 11212 of the connecting portion 1121, and flows out through the outlet ends 1124 of each fuel nozzle after the flow distribution. The inner diameter of the fuel-oxidant passage is greater than the outer diameter of the fuel injection pipe 1122, so that there is a gap between the inner wall of the fuel-oxidant passage and the outer wall of the fuel injection pipe 1122, and the gap distance r (see Figure 4) is 1-8mm, preferably 2- 6mm to facilitate the passage of the oxidizer and facilitate the assembly of the fuel injection pipe and the fuel-oxidizer passage.
一些实施例中，如图4所示，燃料-氧化剂通路与其中的燃料喷射管道同轴设置，即氧化剂通道均匀环绕燃料喷射管道1122。围绕每个燃料喷射管道1122的氧化剂通道的目的之一是用氧化剂清扫所述通道，以避免来自燃烧气氛的颗粒等进入燃烧器后形成沉积物，从而可能引起燃烧器故障和损坏。当然，本领域普通技术人员都清楚，为了使得设备 更加稳定，可以在环形氧化剂通道内周向设置若干定位部件。In some embodiments, as shown in FIG. 4, the fuel-oxidant passage is arranged coaxially with the fuel injection pipe therein, that is, the oxidant passage evenly surrounds the fuel injection pipe 1122. One of the purposes of the oxidant passage surrounding each fuel injection pipe 1122 is to clean the passage with oxidant to prevent particles from the combustion atmosphere from entering the combustor to form deposits, which may cause malfunction and damage to the combustor. Of course, those of ordinary skill in the art know that in order to make the equipment more stable, several positioning components can be arranged circumferentially in the annular oxidant channel.
所述的燃料喷嘴的出口端1124位于燃料-氧化剂通路内，即燃料-氧化剂通路的第三出口端1112位于燃料喷嘴的出口端1124的外部，燃料在燃料喷嘴的出口端1124即与燃料-氧化剂通路内的氧化剂混合，以提前燃烧开始的点。The outlet end 1124 of the fuel nozzle is located in the fuel-oxidizer passage, that is, the third outlet end 1112 of the fuel-oxidizer passage is located outside the outlet end 1124 of the fuel nozzle, and the fuel at the outlet end 1124 of the fuel nozzle is connected to the fuel-oxidizer passage. The oxidant in the passage is mixed to advance the point where the combustion starts.
一些实施例中，所述的燃料-氧化剂通路与其中的燃料喷射管道偏心设置，即不同轴设置。并且，为了使得燃烧器更加稳定，可以在氧化剂通道内周向设置有定位部件。如图2所示，第一氧化剂通路的第一出口端1212具有第一转向结构1213。该第一转向结构1213使得第一出口端1212向下(即，朝向燃料-氧化剂通路向下)转向，并与第一氧化剂通路的本体延长线具有第一偏置角度，该第一偏置角度小于90°(优选1-15°，更优地选择1.5-8°)，可使得第一氧化剂通路喷出的氧化剂与燃料-氧化剂通路喷出的燃料在相交处混合。In some embodiments, the fuel-oxidant passage and the fuel injection pipe therein are arranged eccentrically, that is, they are arranged differently. In addition, in order to make the burner more stable, a positioning member may be provided circumferentially in the oxidant channel. As shown in FIG. 2, the first outlet end 1212 of the first oxidant passage has a first turning structure 1213. The first turning structure 1213 makes the first outlet end 1212 turn downward (that is, downward toward the fuel-oxidizer passage), and has a first offset angle with the body extension line of the first oxidizer passage. Less than 90° (preferably 1-15°, more preferably 1.5-8°) can make the oxidant sprayed from the first oxidant passage and the fuel sprayed from the fuel-oxidant passage mix at the intersection.
所述第二氧化剂通路的第二出口端1312具有第二转向结构1313，该第二转向结构1313使得该第二出口端1312向上(朝向燃料-氧化剂通路向上)转向，并与第二氧化剂通路的本体延长线具有第二偏置角度，该第二偏置角度小于90°(优选0-15°，更优地选择0-4°)。The second outlet end 1312 of the second oxidant passage has a second turning structure 1313, and the second turning structure 1313 makes the second outlet end 1312 turn upward (toward the fuel-oxidant passage), and is connected to the second oxidant passage. The body extension line has a second offset angle, which is less than 90° (preferably 0-15°, more preferably 0-4°).
燃料-氧化剂通路的第三出口端1112具有转向结构(图示未示出)，使其与燃料-氧化剂通路的本体延长线具有第三偏置角度，该第三偏置角度小于90°，较佳地，所述的第三偏置角度小于20°。相应地，套置在燃料-氧化剂通路内的所述燃料喷嘴的出口端1124也具有转向结构，使得燃料喷嘴的出口端1124与燃料喷射管道1122的本体延长线具有第三偏置角度。The third outlet end 1112 of the fuel-oxidant passage has a turning structure (not shown in the figure), so that it has a third offset angle with the body extension line of the fuel-oxidant passage. The third offset angle is less than 90°, which is more Preferably, the third offset angle is less than 20°. Correspondingly, the outlet end 1124 of the fuel nozzle nested in the fuel-oxidizer passage also has a turning structure, so that the outlet end 1124 of the fuel nozzle and the body extension line of the fuel injection pipe 1122 have a third offset angle.
如图7a和图7b所示，两条燃料喷射管道1122对称分布，两个燃料喷嘴的出口端1124同时朝向或背离该燃料喷射管道的对称中心线的方向呈转向设置。As shown in FIGS. 7a and 7b, the two fuel injection pipes 1122 are symmetrically distributed, and the outlet ends 1124 of the two fuel nozzles are simultaneously turned toward or away from the symmetrical centerline of the fuel injection pipe.
一些实施例中，第一转向结构1213中，所述第一氧化剂通路的第一出口端还朝向或背离第一对称中心线设置。一些实施例中，第一出口端可同时朝下、朝内或朝外。In some embodiments, in the first turning structure 1213, the first outlet end of the first oxidant passage is also arranged toward or away from the first symmetric centerline. In some embodiments, the first outlet end may face downward, inward, or outward at the same time.
一些实施例中，第二转向结构1313中，所述第二氧化剂通路的第二出口端还朝向或背离第二对称中心线设置。一些实施例中，第二出口端可同时朝上、朝内或朝外。In some embodiments, in the second turning structure 1313, the second outlet end of the second oxidant passage is also arranged toward or away from the second symmetric centerline. In some embodiments, the second outlet end may face upward, inward, or outward at the same time.
一些实施例中，所述的燃料-氧化剂通路的第三出口端1112、第一氧化剂通路的第一出口端1212、及第二氧化剂通路的第二出口端1312至少一个具有变径结构。In some embodiments, at least one of the third outlet end 1112 of the fuel-oxidant passage 1112, the first outlet end 1212 of the first oxidant passage, and the second outlet end 1312 of the second oxidant passage has a diameter reducing structure.
一些实施例中，所述的燃烧器还包含若干控制单元，以调整控制第一氧化剂供给***、第二氧化剂供给***及燃料-氧化剂供给***中氧化剂的流量和流速，使得第一氧化剂供给***、第二氧化剂供给***及燃料-氧化剂供给***中氧化剂保持需要的比例。In some embodiments, the burner further includes several control units to adjust and control the flow and flow rate of the oxidant in the first oxidizer supply system, the second oxidizer supply system, and the fuel-oxidizer supply system, so that the first oxidizer supply system, The oxidizer in the second oxidizer supply system and the fuel-oxidizer supply system maintains the required ratio.
一些实施例中，燃烧器还包含控制第一氧化剂供给***中各路第一氧化剂通路的氧化剂比例的控制单元。In some embodiments, the burner further includes a control unit that controls the proportion of oxidant in each first oxidant passage in the first oxidant supply system.
一些实施例中，燃烧器还包含控制第二氧化剂供给***中各路第二氧化剂通路的氧化剂比例的控制单元。In some embodiments, the burner further includes a control unit that controls the proportion of oxidant in each second oxidant passage in the second oxidant supply system.
一些实施例中，燃烧器还包含控制燃料-氧化剂供给***中各燃料喷射管道的燃料比例的控制单元。In some embodiments, the combustor further includes a control unit that controls the fuel ratio of each fuel injection pipe in the fuel-oxidant supply system.
如图1所示，金属件20包含：连通并固定第一氧化剂通路的第一连接端(图示未示出)、连通并固定第二氧化剂通路的第二连接端(图示未示出)、第一控制单元32、第二控制单元31及安装固定燃料喷嘴的安装孔(图示未示出)；其中，第一控制单元32能控制第一连接端与第二连接端的连通，以调整第一氧化剂通路、第二氧化剂通路中的氧化剂流量和流速；第二控制单元31能控制第一连接端与燃料-氧化剂通路的连通，以控制燃料-氧化剂通路中氧化剂的流量和流速。该实施例通过两个控制单元实现了对第一氧化剂通路(即上通路)、燃料-氧化剂通路(即中通路)、第二氧化剂通路(即下通路)三路的氧化剂的比例调控。第一控制单元32和第二控制单元31均选择自动阀或手动阀中的一种，以实现需求的换向和/或氧化剂比例调控。As shown in FIG. 1, the metal piece 20 includes: a first connecting end (not shown in the figure) that communicates with and fixes the first oxidant passage, and a second connecting end (not shown in the figure) that connects and fixes the second oxidant passage , The first control unit 32, the second control unit 31 and the mounting hole (not shown in the figure) for installing the fixed fuel nozzle; wherein, the first control unit 32 can control the communication between the first connection end and the second connection end to adjust The flow rate and flow rate of the oxidizer in the first oxidizer passage and the second oxidizer passage; the second control unit 31 can control the communication between the first connection end and the fuel-oxidizer passage to control the flow rate and flow rate of the oxidizer in the fuel-oxidizer passage. In this embodiment, two control units realize the proportional control of the oxidant in the first oxidant passage (that is, the upper passage), the fuel-oxidant passage (that is, the middle passage), and the second oxidant passage (that is, the lower passage). Both the first control unit 32 and the second control unit 31 select one of an automatic valve or a manual valve to achieve required reversal and/or oxidant ratio regulation.
燃料-氧化剂供给***11、第一氧化剂供给***12和第二氧化剂供给***13中的氧化剂在各自的喷出出口前均相互独立，不相混合。The oxidants in the fuel-oxidizer supply system 11, the first oxidizer supply system 12, and the second oxidizer supply system 13 are independent of each other before their respective ejection outlets, and do not mix.
如图1所示，本发明的一些实施例中，氧化剂通过总入口30输入，再经第一控制单元32和第二控制单元31进行流量比例分配，如控制第一氧化剂供给***12中氧化剂比例为60％(体积比)，第二氧化剂供给***13中氧化剂比例为30％(体积比)，燃料-氧化剂供给***11中氧化剂比例为10％(体积比)。As shown in FIG. 1, in some embodiments of the present invention, the oxidant is input through the total inlet 30, and then the flow is proportionally distributed through the first control unit 32 and the second control unit 31, such as controlling the ratio of the oxidant in the first oxidant supply system 12 It is 60% (volume ratio), the oxidizer ratio in the second oxidant supply system 13 is 30% (volume ratio), and the oxidizer ratio in the fuel-oxidizer supply system 11 is 10% (volume ratio).
为了使得氧化剂更均匀有序地与燃料混合，第一偏置角度不等于第二偏置角度，使得第一氧化剂通路的氧化剂、第二氧化剂通路的氧化剂与燃料的混合位置、时间不同。In order to make the oxidant mix with the fuel more uniformly and orderly, the first offset angle is not equal to the second offset angle, so that the mixing position and time of the oxidant in the first oxidant passage and the oxidant and fuel in the second oxidant passage are different.
通过计算机***模拟玻璃熔制燃烧空间，对相同玻璃熔制工艺条件下的燃烧器(该燃烧器具有第一转向结构和第二转向结构，其中，第一转向结构具有第一偏置角度，第二转向结构具有第二偏置角度)燃烧效果进行评估，达到预期效果：增加上部第一氧化剂通路中氧化剂比例可实现火焰更贴近玻璃液面，如图6a所示；增加下部第二氧化剂通路中氧化剂比例可实现火焰更远离玻璃液面，如图6b所示。Through the computer system to simulate the glass melting combustion space, the burner under the same glass melting process conditions (the burner has a first steering structure and a second steering structure, wherein the first steering structure has a first offset angle, The second turning structure has a second offset angle) to evaluate the combustion effect, and achieve the expected effect: increasing the proportion of oxidant in the upper first oxidant passage can achieve the flame closer to the glass surface, as shown in Figure 6a; increase the lower second oxidant passage The ratio of oxidant can realize that the flame is farther away from the glass surface, as shown in Figure 6b.
如图7a所示，燃料喷嘴的出口端1124具有转向结构，使得该燃料喷嘴的出口端1124与燃料喷射管道1122的本体延长线具有第三偏置角度。较佳地，该第三偏置角度为0-20°。燃料喷嘴的连接部1121上还可以设置控制单元，以控制各路燃料喷射管道内燃料的比例。另外，图7a中的连接部1121的燃料气流分配腔11211的横截面呈Y型，该Y型结构起到类似导流部件的作用。As shown in FIG. 7a, the outlet end 1124 of the fuel nozzle has a turning structure, so that the outlet end 1124 of the fuel nozzle and the body extension line of the fuel injection pipe 1122 have a third offset angle. Preferably, the third offset angle is 0-20°. The connecting portion 1121 of the fuel nozzle may also be provided with a control unit to control the proportion of fuel in each fuel injection pipe. In addition, the cross section of the fuel flow distribution cavity 11211 of the connecting portion 1121 in FIG. 7a is Y-shaped, and the Y-shaped structure functions as a flow guide member.
如图2所示,为了调节火焰的稳定度，燃料-氧化剂通路中设有变径结构1113。As shown in Figure 2, in order to adjust the flame stability, a variable diameter structure 1113 is provided in the fuel-oxidant passage.
一些实施例中，为了调节上部氧化剂喷出的速度和强度，所述的第一氧化剂通路的出 口端设有变径结构。In some embodiments, in order to adjust the spraying speed and intensity of the upper oxidant, the outlet end of the first oxidant passage is provided with a diameter reducing structure.
一些实施例中，为了调节下部氧化剂喷出的速度和强度，所述的第二氧化剂通路的出口端设有变径结构。In some embodiments, in order to adjust the spraying speed and intensity of the lower oxidant, the outlet end of the second oxidant passage is provided with a diameter reducing structure.
所述的第一氧化剂通路的横截面形状为圆形、椭圆形、方形或不规则形状；所述的第二氧化剂通路的横截面形状为圆形、椭圆形、方形或不规则形状；所述的燃料-氧化剂通路的横截面形状为圆形、椭圆形、方形或不规则形状。第一氧化剂通路、第二氧化剂通路及燃料-氧化剂通路的有效截面积可以相同或不同。The cross-sectional shape of the first oxidant passage is circular, elliptical, square or irregular shape; the cross-sectional shape of the second oxidant passage is circular, elliptical, square or irregular; The cross-sectional shape of the fuel-oxidant passage is round, oval, square or irregular. The effective cross-sectional areas of the first oxidant passage, the second oxidant passage, and the fuel-oxidant passage may be the same or different.
所述的第一氧化剂***的氧化剂选择氧气、空气或富氧空气，所述的第二氧化剂***的氧化剂选择氧气、空气或富氧空气；所述燃料-氧化剂供给***的氧化剂选择氧气、空气或富氧空气。所述的氧化剂可以是常温，也可以经过加热处理，温度范围5℃到700℃。The oxidant of the first oxidizer system selects oxygen, air or oxygen-enriched air, the oxidant of the second oxidizer system selects oxygen, air or oxygen-enriched air; the oxidant of the fuel-oxidant supply system selects oxygen, air or oxygen. Oxygen-enriched air. The oxidant can be at room temperature, or it can be heated, and the temperature ranges from 5°C to 700°C.
所述燃料-氧化剂供给***的燃料为气体燃料。The fuel of the fuel-oxidant supply system is gas fuel.
本发明的气体燃料燃烧器使用方法如下：The method of using the gas fuel burner of the present invention is as follows:
从位于燃烧器中部的燃料-氧化剂供给***的燃料入口输送气体燃料形成气体燃料流，使其经过内部的燃料喷射管道，到达燃料出口；通过第二控制单元控制燃料喷射管道外壁与燃料-氧化剂通路之间氧化剂的流量和流速，从而控制燃烧的开始点；通过第一控制单元分别控制第一氧化剂通路和第二氧化剂通路之间的连通，以调整第一氧化剂通路、第二氧化剂通路中的氧化剂流量和流速，使氧化剂与燃料按照需要的时间和位置混合，并保持需要的火焰方向；并控制供应向燃料流方向的氧化剂，使氧化剂与燃料按照需要的时间和位置混合，保持需要的火焰方向和水平角度。The gaseous fuel is delivered from the fuel inlet of the fuel-oxidant supply system located in the middle of the burner to form a gaseous fuel flow, which passes through the internal fuel injection pipe to the fuel outlet; the outer wall of the fuel injection pipe and the fuel-oxidant passage are controlled by the second control unit The flow rate and flow rate of the oxidant are controlled to control the starting point of combustion; the first control unit controls the communication between the first oxidant passage and the second oxidant passage to adjust the oxidant in the first oxidant passage and the second oxidant passage. Flow rate and flow rate, make the oxidant and fuel mix according to the required time and position, and maintain the required flame direction; and control the supply of oxidant to the fuel flow direction, so that the oxidant and fuel mix according to the required time and position, and maintain the required flame direction And horizontal angle.
本发明的燃烧器通过对氧化剂分布、方向以及氧化剂-燃料方向等调整，达到火焰加长、火焰覆盖面积加大、火焰热点远离侧壁耐火材料、避免火焰局部过热等目的，可用于需要调整火焰长度、火焰覆盖面积、刚性以及火焰的局部气氛等应用场景。以下通过具体实施例说明其应用。The burner of the present invention achieves the purposes of lengthening the flame, increasing the flame coverage area, keeping the flame hot spot away from the refractory material on the side wall, and avoiding local overheating of the flame by adjusting the oxidizer distribution, direction, and oxidizer-fuel direction. It can be used to adjust the flame length , Flame coverage area, rigidity and flame local atmosphere and other application scenarios. The following uses specific examples to illustrate its application.
实施例1Example 1
在玻璃熔制工艺过程中，采用图1所示的气体燃料燃烧器，该燃烧器的第一氧化剂通路的第一出口端具有第一偏置角度，该第一偏置角度选择2-8°，该燃烧器的第二氧化剂通路的第二出口端具有第二偏置角度，该第二偏置角度选择1-5°，喷嘴结构如图5所示，即喷嘴的出口端不具有转向结构。本实施例中的氧化剂采用纯氧，从总入口30输入，通过第一控制单元32、第二控制单元31分别控制第一氧化剂供给***、第二氧化剂供给***及燃料-氧化剂供给***中的氧化剂流量分配，使氧化剂与燃料按照需要的时间和位置混合，并保持需要的火焰方向。In the glass melting process, the gas fuel burner shown in Fig. 1 is used. The first outlet end of the first oxidant passage of the burner has a first offset angle, and the first offset angle is selected to be 2-8° , The second outlet end of the second oxidant passage of the combustor has a second offset angle, and the second offset angle is selected from 1-5°. The nozzle structure is shown in Figure 5, that is, the outlet end of the nozzle does not have a turning structure . The oxidant in this embodiment adopts pure oxygen, which is input from the main inlet 30, and the oxidant in the first oxidant supply system, the second oxidant supply system and the fuel-oxidant supply system are respectively controlled by the first control unit 32 and the second control unit 31 Flow distribution, so that the oxidizer and fuel are mixed at the required time and position, and the required flame direction is maintained.
实施例2Example 2
在玻璃熔制工艺过程中，根据工艺不同需求，需要火焰具有不同的特性。In the glass melting process, the flame needs to have different characteristics according to the different requirements of the process.
对于料山比较高的状况，火焰容易吹扫或冲击到料堆，为了避免其不利影响，提高第二氧化剂***中的氧化剂比例，以使得火焰角度适当上调，即可实现在垂直方向调整气体燃烧器火焰的工艺目的。For the situation where the material mountain is relatively high, the flame is easy to sweep or impact the material pile. In order to avoid its adverse effects, increase the proportion of oxidant in the second oxidant system to increase the flame angle appropriately to achieve the adjustment of gas combustion in the vertical direction. The process purpose of the flame.
实施例3Example 3
在空气燃烧的马蹄焰玻璃窑炉上，由于以下原因需要进行热点处纯氧燃烧助熔：蓄热室堵塞或格子体损坏，需要提升出料量，需要改善玻璃质量，需要降低燃料用量，降低窑炉废气排放量等。In an air-burning horseshoe flame glass furnace, pure oxy-fuel combustion at hot spots is required due to the following reasons: the regenerator is blocked or the grid body is damaged, the output volume needs to be increased, the glass quality needs to be improved, and the fuel consumption needs to be reduced. Kiln exhaust gas emissions, etc.
在热点(最高温度点)处助熔的纯氧燃烧器，如果占玻璃窑炉总能量的比例较低，现有的纯氧燃烧器设计，纯氧火焰会由于侧边吹过来的马蹄焰形状的空气火焰(气流)的冲击，发生偏转，如图8所示，严重时会导致纯氧火焰偏转到接近侧壁耐火材料的情况发生；由于马蹄焰玻璃窑炉配备的一对蓄热室需要周期性换向燃烧以达到燃烧废气余热的充分利用，使纯氧燃烧器火焰随空气火焰换向而周期性的偏转，导致玻璃液热点不稳定，不利于玻璃质量稳定。In the hot spot (highest temperature point) of the pure oxygen burner, if the proportion of the total energy of the glass furnace is low, the existing pure oxygen burner design, the pure oxygen flame will be due to the horseshoe flame shape blown from the side The impact of the air flame (air flow) caused the deflection, as shown in Figure 8. In severe cases, the pure oxygen flame will deflect to the refractory material close to the side wall; due to the need for a pair of regenerators equipped with the horseshoe flame glass furnace Periodic reversal of combustion in order to fully utilize the waste heat of combustion exhaust gas, so that the flame of the pure oxygen burner is periodically deflected with the reversal of the air flame, resulting in unstable hot spots of the molten glass, which is not conducive to the stability of the glass quality.
为解决上述缺陷，将本发明的一种同时具有第一偏置角度、第二偏置角度和第三偏置角度的气体燃料燃烧器(燃烧器功率0.6-1.5MW)用于马蹄焰玻璃窑炉助熔。在空气燃烧的马蹄焰玻璃窑炉两侧分别布置上述的气体燃料燃烧器，该燃烧器内部的氧气以及气体燃料可随空气火焰换向(马蹄焰)而左右调整分布，如图9所示，气体燃料燃烧器上的实心圆点一侧与空心圆点一侧的氧气分布比例为70％：30％(以体积百分数计)，对于靠近空气火焰的气体燃料燃烧器，增加靠近流液洞一侧的第一氧化剂通路的氧气比例，与此同时，对于远离空气火焰的纯氧燃烧器，增加远离流液洞一侧的第一氧化剂通路的氧气比例，从而降低因空气火焰冲击引起的火焰偏斜，使得火焰的非偏转长度延长1-2倍，还降低了对燃烧器附近耐火材料的侵蚀，避免了蓄热室堵塞或格子体损坏，同时加强了玻璃液热点位置的稳定性，有利于玻璃质量提升。In order to solve the above-mentioned shortcomings, a gas fuel burner (burner power 0.6-1.5MW) with a first offset angle, a second offset angle and a third offset angle of the present invention is used in a horseshoe flame glass kiln Furnace fluxing. The above-mentioned gas fuel burners are arranged on both sides of the air-burning horseshoe flame glass furnace. The oxygen and gas fuel inside the burner can be adjusted left and right with the air flame reversal (horseshoe flame), as shown in Figure 9. The oxygen distribution ratio between the solid dot side and the hollow dot side of the gas fuel burner is 70%: 30% (in terms of volume percentage). For the gas fuel burner close to the air flame, add one near the liquid hole At the same time, for the pure oxygen burner far from the air flame, increase the oxygen ratio of the first oxidant path on the side away from the liquid hole to reduce the flame deviation caused by the impact of the air flame. Inclined, the non-deflection length of the flame is extended by 1-2 times, and it also reduces the erosion of the refractory near the burner, avoids the blockage of the regenerator or damage to the grid body, and strengthens the stability of the hot spot of the glass liquid, which is beneficial to Improved glass quality.
实施例4Example 4
如图10所示，为本发明的一种更适于气体燃料燃烧器的燃料喷嘴的俯视图，该连接部1121包含：燃料气流分配腔11211，连接部的入口端11212，及设置在燃料气流分配腔11211内的导流部件11213。该导流部件11213用于将燃料均匀分配到各喷射管道，其横截面呈矩形，与燃料气流分配腔11211的横截面一样。该导流部件11213的有效长度L应不小于连接部的入口端11212的直径D。所述的有效长度是指起到导流作用的长度。当该导流部件11213的中心轴线至燃料气流分配腔11211第一端的距离设为a，该导流部件11213的中心轴线至燃料气流分配腔11211第二端的距离设为b，优选地a/b≤1，其中，所述的第一端是指靠近连接部的入口端的一端，所述的第二端是指远离连接部的入口端的一端。As shown in FIG. 10, it is a top view of a fuel nozzle more suitable for a gas fuel burner of the present invention. The connecting portion 1121 includes: a fuel flow distribution chamber 11211, an inlet end 11212 of the connecting portion, and a fuel flow distribution chamber 11212. The guiding component 11213 in the cavity 11211. The guide component 11213 is used to evenly distribute the fuel to the injection pipes, and its cross section is rectangular, which is the same as the cross section of the fuel air distribution cavity 11211. The effective length L of the flow guiding member 11213 should not be less than the diameter D of the inlet end 11212 of the connecting part. The effective length refers to the length that plays a role of diversion. When the distance from the central axis of the flow guiding member 11213 to the first end of the fuel flow distribution chamber 11211 is set to a, the distance from the central axis of the flow guiding member 11213 to the second end of the fuel flow distribution chamber 11211 is set to b, preferably a/ b≤1, wherein the first end refers to the end close to the inlet end of the connecting part, and the second end refers to the end far away from the inlet end of the connecting part.
以与气体燃料进气方向所在平面垂直正交的平面作为投影面，所述的导流部件11213在该投影面上的投影面积不小于连接部在该垂直正交平面上的入口端的截面积。A plane perpendicular to the plane where the gas fuel intake direction is located is taken as the projection plane, and the projected area of the guide member 11213 on the projection plane is not less than the cross-sectional area of the inlet end of the connecting portion on the perpendicular orthogonal plane.
需要说明的是，所述的导流部件的横截面还可以呈圆形、类圆形、椭圆形、类椭圆形、梯形、三角形、圆锥形等规则或不规则形状。It should be noted that the cross-section of the guide member can also be in a regular or irregular shape such as a circle, a circle-like shape, an ellipse, a ellipse-like shape, a trapezoid, a triangle, a cone, and the like.
综上所述，本发明的气体燃料燃烧器包括多个氧化剂通路、气体燃料通路和/或氧化剂与气体燃料共用的通路，实现了对氧化剂、气体燃料等燃烧要素条件的不同组合选择，实现调整火焰长度、火焰水平(或垂直)方向、火焰刚性、火焰覆盖面积、控制燃烧速度、窑炉内部局部气氛、控制窑炉内部温度并避免局部过热、降低NOx生成物等燃烧效果。In summary, the gas fuel burner of the present invention includes multiple oxidizer passages, gas fuel passages, and/or passages shared by the oxidizer and gas fuel, which realizes the selection of different combinations of combustion element conditions such as oxidizer and gas fuel, and realizes adjustment. Flame length, flame horizontal (or vertical) direction, flame rigidity, flame coverage area, control combustion speed, local atmosphere inside the kiln, control the internal temperature of the kiln, avoid local overheating, reduce NOx production and other combustion effects.
尽管本发明的内容已经通过上述优选实施例作了详细介绍，但应当认识到上述的描述不应被认为是对本发明的限制。在本领域技术人员阅读了上述内容后，对于本发明的多种修改和替代都将是显而易见的。因此，本发明的保护范围应由所附的权利要求来限定。Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as limiting the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (19)

  1. 一种气体燃料燃烧器，其特征在于，所述的燃烧器包含：A gas fuel burner, characterized in that the burner comprises:
    一耐火单元；A refractory unit;
    一金属件；A piece of metal
    一燃料-氧化剂供给***；A fuel-oxidant supply system;
    一第一氧化剂供给***；和A first oxidant supply system; and
    一第二氧化剂供给***；其中，A second oxidant supply system; wherein,
    所述燃料-氧化剂供给***、第一氧化剂供给***、第二氧化剂供给***分别由耐火单元及金属件限定；The fuel-oxidizer supply system, the first oxidizer supply system, and the second oxidizer supply system are respectively defined by a refractory unit and metal parts;
    所述的第一氧化剂供给***位于燃料-氧化剂供给***的一侧，所述第二氧化剂供给***位于燃料-氧化剂供给***的另一侧；The first oxidizer supply system is located on one side of the fuel-oxidizer supply system, and the second oxidizer supply system is located on the other side of the fuel-oxidizer supply system;
    所述的第一氧化剂供给***包括一第一氧化剂通路，所述的第二氧化剂供给***包括一第二氧化剂通路；其中，The first oxidant supply system includes a first oxidant passage, and the second oxidant supply system includes a second oxidant passage; wherein,
    所述第一氧化剂通路的出口端设有第一转向结构，该第一转向结构使得该第一氧化剂通路的出口端与第一氧化剂通路的本体延长线构成第一偏置角度，并且该第一偏置角度小于90°；所述第二氧化剂通路的出口端设有第二转向结构，该第二转向结构使得该第二氧化剂通路的出口端与第二氧化剂通路的本体延长线构成第二偏置角度，并且该第二偏置角度小于90°；The outlet end of the first oxidant passage is provided with a first turning structure, and the first turning structure makes the outlet end of the first oxidant passage and the extension line of the body of the first oxidant passage form a first offset angle, and The offset angle is less than 90°; the outlet end of the second oxidant passage is provided with a second turning structure, and the second turning structure makes the outlet end of the second oxidant passage and the extension line of the second oxidant passage form a second deviation Set angle, and the second offset angle is less than 90°;
    所述的燃料-氧化剂供给***包括：一燃料-氧化剂通路和设置在燃料-氧化剂通路中的一燃料喷嘴，其中，The fuel-oxidizer supply system includes: a fuel-oxidizer passage and a fuel nozzle arranged in the fuel-oxidizer passage, wherein:
    该燃料喷嘴包括一连接部及至少两条燃料喷射管道，该连接部内设置有一燃料气流分配腔，气体燃料由连接部的入口端进入该燃料气流分配腔，经该燃料气流分配腔分配后分别通过各燃料喷射管道的出口端流出；The fuel nozzle includes a connecting part and at least two fuel injection pipes. The connecting part is provided with a fuel flow distribution chamber. The gas fuel enters the fuel flow distribution chamber from the inlet end of the connection part, and passes through the fuel flow distribution chamber after being distributed. Outflow from the outlet end of each fuel injection pipe;
    所述的燃料-氧化剂通路的内径大于燃料喷射管道的外径；所述的燃料-氧化剂通路与燃料喷射管道的间隙为1-8mm，较佳地为2-6mm。The inner diameter of the fuel-oxidant passage is larger than the outer diameter of the fuel injection pipe; the gap between the fuel-oxidant passage and the fuel injection pipe is 1-8mm, preferably 2-6mm.
  2. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的燃料气流分配腔内设置有一导流部件，用于将气体燃料分配到各喷射管道。The gas fuel burner of claim 1, wherein a flow guide member is provided in the fuel gas flow distribution cavity for distributing the gas fuel to each injection pipe.
  3. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的第一偏置角度为1-15°，较佳地为1.5-8°。The gas fuel burner according to claim 1, wherein the first offset angle is 1-15°, preferably 1.5-8°.
  4. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的第二偏置角度为0-15°，较佳地为0-4°。The gas fuel burner according to claim 1, wherein the second offset angle is 0-15°, preferably 0-4°.
  5. 如权利要求1-4中任意一项所述的气体燃料燃烧器，其特征在于，第一偏置角度与第二偏置角度不相等。The gas fuel burner according to any one of claims 1 to 4, wherein the first offset angle and the second offset angle are not equal.
  6. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述燃料喷射管道的出口端设有一第三转向结构，使所述燃料喷射管道的出口端与其本体延长线构成第三偏置角度，并且该第三偏置角度小于90°，较佳地，第三偏置角度小于20°。The gas fuel burner of claim 1, wherein the outlet end of the fuel injection pipe is provided with a third turning structure, so that the outlet end of the fuel injection pipe and the extension of the body form a third offset angle And the third offset angle is less than 90°, preferably, the third offset angle is less than 20°.
  7. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的燃料喷射管道沿对称中心线对称分布，所述燃料喷射管道的出口端朝向该燃料喷射管道的对称中心线。The gas fuel burner of claim 1, wherein the fuel injection pipes are symmetrically distributed along a symmetric center line, and the outlet end of the fuel injection pipe faces the symmetric center line of the fuel injection pipe.
  8. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的第一氧化剂供给***由两路以上的第一氧化剂通路左右对称设置构成，具有第一对称中心线。8. The gas fuel burner according to claim 1, wherein the first oxidant supply system is composed of two or more first oxidant passages arranged symmetrically, and has a first symmetrical centerline.
  9. 如权利要求8所述的气体燃料燃烧器，其特征在于，第一转向结构中，所述第一氧化剂通路的出口端还朝向或背离第一对称中心线设置。8. The gas fuel burner according to claim 8, wherein in the first turning structure, the outlet end of the first oxidant passage is further disposed toward or away from the first symmetric center line.
  10. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的第二氧化剂供给***由两路以上的第二氧化剂通路左右对称设置构成，具有第二对称中心线。8. The gas fuel burner according to claim 1, wherein the second oxidant supply system is composed of two or more second oxidant passages arranged symmetrically, and has a second symmetrical centerline.
  11. 如权利要求10所述的气体燃料燃烧器，其特征在于，第二转向结构中，所述第二氧化剂通路的出口端还朝向或背离第二对称中心线。10. The gas fuel burner according to claim 10, wherein in the second turning structure, the outlet end of the second oxidant passage is further toward or away from the second symmetric center line.
  12. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的燃料-氧化剂通路的出口端、第一氧化剂通路的出口端和/或第二氧化剂通路的出口端设有一变径结构。The gas fuel burner of claim 1, wherein the outlet end of the fuel-oxidant passage, the outlet end of the first oxidant passage, and/or the outlet end of the second oxidant passage are provided with a diameter reducing structure.
  13. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的燃烧器还包含一第三控制单元，所述第三控制单元用于调整第一氧化剂供给***、第二氧化剂供给***及燃料-氧化剂供给***中氧化剂的流量和流速。The gas fuel burner of claim 1, wherein the burner further comprises a third control unit, and the third control unit is used to adjust the first oxidant supply system, the second oxidant supply system, and The flow and velocity of the oxidant in the fuel-oxidant supply system.
  14. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的燃烧器还包含第四控制单元，用于调整各第一氧化剂通路的氧化剂比例。8. The gas fuel burner of claim 1, wherein the burner further comprises a fourth control unit for adjusting the oxidant ratio of each first oxidant passage.
  15. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的燃烧器还包含第五控制单元，用于控制各第二氧化剂通路的氧化剂比例。8. The gas fuel burner according to claim 1, wherein the burner further comprises a fifth control unit for controlling the oxidant ratio of each second oxidant passage.
  16. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的燃烧器还包含第六控制单元，用于控制各燃料喷射管道的燃料比例。The gas fuel burner of claim 1, wherein the burner further comprises a sixth control unit for controlling the fuel ratio of each fuel injection pipe.
  17. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的金属件包含：The gas fuel burner of claim 1, wherein the metal piece comprises:
    连通并固定第一氧化剂通路的第一连接端；Communicating and fixing the first connecting end of the first oxidant passage;
    连通并固定第二氧化剂通路的第二连接端；Communicating and fixing the second connecting end of the second oxidant passage;
    第一控制单元；First control unit
    第二控制单元；及The second control unit; and
    安装固定燃料喷嘴的安装孔；Mounting holes for fixing fuel nozzles;
    其中，第一控制单元用于控制第一连接端与第二连接端的连通，以调整第一氧化剂通路、第二氧化剂通路中的氧化剂流量和流速；第二控制单元用于控制第一连接端与燃料-氧化剂通路的连通，以控制燃料-氧化剂通路中氧化剂的流量和流速。Wherein, the first control unit is used to control the communication between the first connection end and the second connection end to adjust the flow and flow rate of the oxidant in the first oxidant passage and the second oxidant passage; the second control unit is used to control the first connection end and The fuel-oxidant passage is connected to control the flow and flow rate of the oxidant in the fuel-oxidant passage.
  18. 如权利要求17所述的气体燃料燃烧器，其特征在于，所述的第一控制单元和/或第二控制单元为自动阀和/或手动阀。The gas fuel burner according to claim 17, wherein the first control unit and/or the second control unit are automatic valves and/or manual valves.
  19. 如权利要求1所述的气体燃料燃烧器，其特征在于，所述的第一氧化剂***、所述第二氧化剂***和/或所述燃料-氧化剂供给***中的氧化剂分别选自氧气、空气或富氧空气。The gas fuel burner according to claim 1, wherein the oxidant in the first oxidant system, the second oxidant system and/or the fuel-oxidant supply system is selected from oxygen, air or Oxygen-enriched air.
PCT/CN2019/089684 2019-05-31 2019-05-31 Gaseous fuel burner WO2020237680A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08226621A (en) * 1994-12-24 1996-09-03 Abb Manag Ag Method and equipment for supplying fuel to burner
UA13336U (en) * 2005-11-08 2006-03-15 Oleksandr Ivanovych Koval Method for gaseous fuel burning
CN103768968A (en) * 2007-09-07 2014-05-07 湍流能量公司 A device for preparation of a fuel gas mixture for input into a combustion chamber
CN106016360A (en) * 2015-03-30 2016-10-12 安萨尔多能源瑞士股份公司 Fuel injector device
CN108870443A (en) * 2017-05-12 2018-11-23 通用电气公司 For the fuel injector with multiple outlet slots in gas turbine combustor
CN109489038A (en) * 2017-11-30 2019-03-19 乔治洛德方法研究和开发液化空气有限公司 A kind of burner of adjustable pluralities of fuel charge proportion

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08226621A (en) * 1994-12-24 1996-09-03 Abb Manag Ag Method and equipment for supplying fuel to burner
UA13336U (en) * 2005-11-08 2006-03-15 Oleksandr Ivanovych Koval Method for gaseous fuel burning
CN103768968A (en) * 2007-09-07 2014-05-07 湍流能量公司 A device for preparation of a fuel gas mixture for input into a combustion chamber
CN106016360A (en) * 2015-03-30 2016-10-12 安萨尔多能源瑞士股份公司 Fuel injector device
CN108870443A (en) * 2017-05-12 2018-11-23 通用电气公司 For the fuel injector with multiple outlet slots in gas turbine combustor
CN109489038A (en) * 2017-11-30 2019-03-19 乔治洛德方法研究和开发液化空气有限公司 A kind of burner of adjustable pluralities of fuel charge proportion

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