Submersible burners and burner assemblies with detachable parts

Abstract

This application discloses a submerged burner and burner assembly with a detachable portion. The submerged burner is configured with a base, a connecting portion, a detachable portion, at least one fuel channel and at least one oxidant channel, and a first cooling system and a second cooling system that are separated from each other. The connecting portion forms a connection mechanism between the base and the detachable portion, and the detachable portion is replaceably fixed to the connecting portion. A circulation loop for a first cooling medium is formed within the first cooling system. The second cooling system extends to the end of the submerged burner and is used to spray a second cooling medium around the combustion surface of the submerged burner. This submerged burner can be replaced in case of failure or wear. This replacement process does not require interruption of kiln operation, thereby reducing energy consumption.

Description

Technical Field

[0001] This application belongs to the field of combustion. Specifically, this application relates to a submerged burner and burner assembly with a detachable portion. Background Technology

[0002] Submerged combustion technology is widely used in industries such as glass, minerals, and metal manufacturing. Unlike conventional burners, the nozzle of a submerged burner is immersed in the melt, typically positioned below the surface of the melt. Submerged burners are usually installed on the side and / or bottom walls of a furnace. With submerged burners, the flame and combustion products from the combustion of fuel and oxidizer pass through and directly contact the melt, resulting in a much more efficient heat transfer than radiative heat transfer by a flame above the melt surface. This also reduces fuel consumption and thus lowers carbon dioxide emissions. Furthermore, due to the lower temperature in the combustion chamber above the melt, nitrogen oxide emissions are also reduced during combustion.

[0003] A typical structure of an immersion burner is disclosed in publication number US2016060154A1. The flame of the immersion burner travels vertically through the molten glass, entraining a large amount of molten glass and ejecting it to the side. The immersion burner includes a first gas supply line and a second gas supply line. The first gas supply line delivers a first gas through the tube and exits at the top of the tube. The second gas supply line delivers a second gas through the tube and exits at the top of the tube. The first and second gases are mixed, and the mixed gas is ejected to the top of the tube.

[0004] Because submerged burners are immersed in high-temperature molten metal, they are obviously prone to damage. Furthermore, once a combustion failure occurs, the molten metal flows back into the submerged burner and solidifies, rendering the burner unusable. The nozzles or the hot ends of the submerged burner are extremely susceptible to wear and tear and have a short lifespan, resulting in high replacement costs.

[0005] In most cases, one or more walls of the submerged burner are equipped with cooling channels for cooling the cooling medium of the burner. In the prior art, if the nozzle is damaged, the entire submerged burner must be replaced, and the operation of the kiln may even need to be interrupted to carry out the replacement. Utility Model Content

[0006] The purpose of this application is to address the aforementioned shortcomings of the prior art. Specifically, a submerged burner with a detachable end is disclosed. This detachable submerged burner allows for more efficient cooling. In the event of a malfunction or wear, the relevant parts of the submerged burner can be replaced without interrupting kiln operations, reducing undesirable energy consumption.

[0007] The detachable submerged burner provided in this application is particularly suitable for the production of water glass (also known as sodium silicate). Water glass is a soluble alkali metal silicate material composed of alkali metal oxides and silicon dioxide.

[0008] To solve the above-mentioned technical problems, the first aspect of this application provides a submerged burner with a detachable part, the submerged burner being configured with a base, a connecting part, a detachable part, at least one fuel passage and at least one oxidant passage, and a first cooling system and a second cooling system that are separated from each other;

[0009] The connecting part constitutes a connection mechanism between the base and the detachable part, and the detachable part can be replaced and fixed to the connecting part;

[0010] A circulation loop for the first cooling medium is formed within the first cooling system;

[0011] The second cooling system extends to the end of the submerged burner and is used to spray a second cooling medium around the combustion surface of the submerged burner.

[0012] This reduces the maintenance cost and difficulty of the burner. When the most vulnerable end of the burner is damaged, only the lower-cost detachable part needs to be replaced, rather than the entire burner, which greatly saves costs.

[0013] Furthermore, the first cooling medium is continuously supplied to the first cooling system. The first cooling system continuously cools the submerged burner, ensuring its stability and lifespan during normal operation. The independent second cooling system provides specialized safety assurance for replacement and maintenance under such special operating conditions.

[0014] Furthermore, a second cooling medium is introduced into the second cooling system in stages (“non-continuous” or “intermittent”). Prior to replacement, the second cooling system rapidly cools the melt around the combustion surface of the submerged burner to solidify it. This solidification process prevents material leakage. This allows replacement work to be carried out without interrupting the operation of the kiln or other burners, avoiding unnecessary energy consumption and production interruptions.

[0015] Furthermore, in the second cooling system, at least one second cooling channel may be connected to a second inlet and a second outlet of the cooling medium, so as to properly allow the cooling medium to travel from the second inlet of the cooling medium through at least one second cooling channel to the second outlet of the cooling medium.

[0016] Furthermore, an opening and closing component is provided at the second inlet of the cooling medium, which selectively opens or closes. This opening and closing component enables the intermittent flow of the second cooling medium.

[0017] Furthermore, when the detachable part needs to be replaced, the second cooling system sprays a second cooling medium onto the melt around the combustion surface to achieve rapid solidification of the melt.

[0018] Furthermore, the second cooling system allows the ends of the submerged burner to be cooled in a manner independent of the first cooling system.

[0019] Furthermore, one end surface of the connecting part is fixed to the base, and the other end surface is fixed to the detachable part.

[0020] Furthermore, the detachable portion includes at least a portion of a first cooling system and at least a portion of a second cooling system.

[0021] Furthermore, a second cooling system extends throughout the entire submerged burner.

[0022] Furthermore, the first cooling medium and the second cooling medium are respectively selected from water, air, nitrogen, or a solid-liquid mixture.

[0023] Furthermore, in the first cooling system, at least one first cooling channel may be connected to a first inlet of cooling medium and a first outlet of cooling medium, so as to allow the first cooling medium to flow continuously from the first inlet of cooling medium through at least one first cooling channel to the first outlet of cooling medium.

[0024] Furthermore, the first cooling channel extends from the first inlet of the cooling medium, partially or completely surrounds the submerged burner, and is connected to the first outlet of the cooling medium via a return pipe, guiding the heated first cooling medium to leave.

[0025] Furthermore, the submerged burner is equipped with:

[0026] At least one fuel passage for fuel flow, with an outlet at one end; and

[0027] At least one oxidant channel for supplying oxidant flow, having an outlet at one end of the oxidant channel, the oxidant channel being configured to surround the outer wall of the fuel channel.

[0028] A second aspect of this application provides a burner assembly, comprising:

[0029] The aforementioned submerged burner; and

[0030] A cooling sleeve is provided, into which the submerged burner is inserted, and the cooling sleeve constitutes a third cooling system.

[0031] Furthermore, the cooling sheath at least partially covers the periphery of the third cooling system.

[0032] A third aspect of this application provides a method for cooling the aforementioned submerged burner, comprising the steps of:

[0033] (1) The first cooling medium is circulated in the first cooling system to continuously cool the submerged burner;

[0034] (2) When rapid cooling of the end of the submerged burner is required, a second cooling medium is introduced into the second cooling system;

[0035] (3) Stop the flow of the second cooling medium.

[0036] By using the above method, the second cooling system acts directly on the detachable part that is closest to the high-temperature melt and most vulnerable to damage, which can achieve the most direct cooling, thereby more effectively protecting this critical component and extending its service life.

[0037] Compared with the prior art, the technical solution provided in this application has the following advantages:

[0038] 1. The replacement cost of the detachable part of the submerged burner is less than 1 / 5 of the replacement cost of the entire burner, which saves more costs.

[0039] 2. The detachable parts, combined with the various cooling systems, prevent material leakage when the burner is replaced.

[0040] 3. The submerged burner can quickly and locally solidify the molten material, allowing for rapid disassembly and replacement when the burner stops burning, while minimizing the impact on molten material outside the localized area. Attached Figure Description

[0041] The advantages and spirit of this application can be further understood through the following detailed description and accompanying drawings.

[0042] Figure 1 This is a schematic diagram representing the submerged burner with a detachable part as described in this application.

[0043] Figure 2 This diagram represents the cooling sleeve and the third cooling system.

[0044] Figure 3 This is a cross-sectional view representing the combustion surface of an immersed burner.

[0045] Figure 4 This is a schematic diagram representing the submerged burner cooling system.

[0046] Wherein, 101 represents the connecting part, 102 represents the base, 103 represents the detachable part, 104 represents the combustion surface, 105 represents the first cooling system, 106 represents the second cooling system, 201 represents the cooling sleeve, 301 represents the second outlet of the cooling medium, 302 represents the nozzle, 401 represents the oxidizer channel, and 402 represents the fuel channel. Detailed Implementation

[0047] The specific embodiments of this application are described in detail below with reference to the accompanying drawings. However, this application should be understood as not being limited to the embodiments described below, and the technical concept of this application can be implemented in combination with other known technologies or other technologies with the same functions as those known technologies.

[0048] In the following description of specific embodiments, in order to clearly demonstrate the structure and working method of this application, a number of directional terms will be used for description. However, terms such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "axial", and "radial" should be understood as convenient terms and should not be understood as limiting terms.

[0049] In the following description of 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 accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they are not to be construed as limiting this application.

[0050] The terms “upward,” “downward,” “above,” and “below” are used with reference to the central transverse axis of the submerged burner. Therefore, the terms “upward” and “downward” should be understood as referring to directions away from and towards that transverse axis. Furthermore, when the first structure is described as being positioned “above” or “below” the second structure, this should be understood as meaning that the first structure is positioned further away from or closer to that transverse axis.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and do not refer to a limitation on time sequence, quantity, or importance. They should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated, but are merely used to distinguish one technical feature from another in this technical solution. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. Similarly, qualifiers such as "a" appearing herein do not refer to a limitation on quantity, but describe technical features not mentioned above. Likewise, unless a noun is modified by a specific quantifier, it should be considered herein to include both singular and plural forms; the technical solution may include either a singular or plural number of that technical feature. Similarly, modifiers such as "approximately" or "approximately" appearing before numerals generally include the number itself, and their specific meaning should be understood in conjunction with the context.

[0052] It should be understood that in this application, "at least one (item)" means one or more, and "more than one" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium; or a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. "Fixed connection," "fixed connection," or "non-moving connection" is understood to refer to a connection between two or more structural members that is not constructed to provide relative movement. An embodiment of a fixed connection is a welded connection or a bolted connection, and in some cases, a weld and bolted connection. "Moving connection," "active," or "sliding connection" is understood to refer to a connection between two or more structural members that allows horizontal and / or vertical relative movement between the members under extreme dynamic loads. Such connections typically do not allow movement under static loads or general dynamic loads (e.g., those imposed by light / moderate wind forces).

[0054] The terms “unit,” “item,” “object,” and “module” described in this specification refer to a unit for performing at least one function and operation, and can be implemented by hardware components or software components and combinations thereof.

[0055] The terms "sealed connection" or "sealable connection" indicate that two components are connected or can be connected by welding, bonding, threading or other means such that no contents will leak from a particular chamber through the sealed connection.

[0056] Unless otherwise clearly indicated, each aspect or embodiment defined herein may be combined with any other aspect or embodiment. In particular, any feature indicated as preferred or advantageous may be combined with any other feature indicated as preferred or advantageous.

[0057] Terminology Explanation

[0058] As used herein, the term "fuel" refers to gaseous, liquid, or solid fuels that can be used interchangeably or in combination. If it is at least partially in gaseous form, it can be introduced directly into the burner. If it is in liquid or solid form, it is introduced near the burner. Gaseous fuels can be natural gas (primarily methane), propane, hydrogen, syngas, biomass gas, or any other hydrocarbon compound and / or sulfur-containing and / or nitrogen-containing compound. Solid or liquid fuels can be any compound that is primarily carbon-containing and / or hydrocarbon-containing and / or sulfur-containing. The method of introducing gaseous, liquid, or solid fuels can be determined by those skilled in the art as needed, and this application is not intended to impose any limitations.

[0059] As used herein, "oxidant" may consist of an oxidant such as air or oxygen-enriched air. The oxidant stream preferably consists of an oxidant with an oxygen molar concentration of at least 50%, preferably at least 80%, more preferably at least 90%, and most preferably at least 95%. These oxidants include oxygen-enriched air containing at least 50% by volume oxygen, 99.5% pure oxygen such as that produced by a cryogenic air separation device, or non-pure oxygen (88% by volume or more) produced by a vacuum pressure swing adsorption process, or oxygen produced from any other source.

[0060] As used herein, the term "nozzle" refers to a component located at the end of a burner that sprays fuel and oxidizer to cause combustion. It can be a separate component or an integral part of other components.

[0061] As used herein, the terms “melting,” “melting,” “melting operation,” and “melting process” refer to the operation of heating a medium from a substantially solid state to a substantially liquid state.

[0062] As used herein, the term "melt" refers to a substance that may contain inorganic, metallic, or organic components, obtained by melting, and may include molten glass, molten metal, molten resin, molten waste, etc.

[0063] As used herein, the term "axial" refers to the direction of an axis of rotation, axis of symmetry, or approximate centerline that is generally parallel to the central axis of the burner. The term "radial" can refer to the direction or relationship relative to a line extending perpendicularly outward from a shared centerline, axis, or similar reference.

[0064] In this article, "surrounding" or "encircling" generally refers to the shape of the ring, which roughly means that the inner ring is enclosed within the outer ring, thus creating a certain gap between the inner and outer layers. This gap can be annular or non-annular.

[0065] The specific embodiments of this application are described in detail below with reference to the accompanying drawings.

[0066] According to a particularly preferred design, the detachable submerged burner provided in this application is suitable for installation on the bottom or side wall of the melting pool inside the kiln.

[0067] according to Figure 1 As shown, the submerged burner is configured with a base 102, a connecting portion 101, a detachable portion 103, at least one fuel passage and at least one oxidizer passage, a first cooling system 105, and a second cooling system 106. The detachable portion 103 is alternatively fixed to the connecting portion 101. The first cooling system 105 and the second cooling system 106 respectively introduce corresponding cooling media.

[0068] In the first cooling system 105, at least one first cooling channel is connected to a first cooling medium inlet and a first cooling medium outlet to allow the first cooling medium to flow continuously from the first cooling medium inlet through the first cooling medium outlet to the first cooling medium outlet, thereby cooling the submerged burner. For example, water can be used as the first cooling medium. Specifically, viewed radially, at least one first cooling channel is located at the center of the submerged burner. Fuel and oxidizer channels are arranged adjacent to the first cooling channel. Specifically, a circulation loop is formed within the first cooling system 105, with the first cooling channel extending from the first cooling medium inlet, partially or completely surrounding the submerged burner, and communicating with the first cooling medium outlet via a return pipe to guide the heated first cooling medium away.

[0069] The first inlet of the cooling medium is connected to a cooling medium source, and the first cooling medium is introduced and circulated through the first cooling channel.

[0070] In the submerged burner, a circulation loop is formed within the first cooling system 105. A second cooling system 106 is separate from the first cooling system 105 and extends to the end of the submerged burner. The second cooling system 106 allows cooling of the (front) end of the submerged burner in a manner independent of the first cooling system 105. Specifically, the second cooling medium is introduced into the second cooling system 106 in stages or on demand, rather than continuously. When an abnormality occurs at the end of the submerged burner requiring replacement, such as blockage, leakage, or shutdown, the second cooling system 106 directly sprays the second cooling medium onto the combustion surface 104. The melt (e.g., molten glass) near the surface of the combustion surface 104 solidifies due to water quenching, achieving a direct and intense cooling effect. This prevents leakage when the removable part 103 and the submerged burner are withdrawn or removed, which would otherwise allow the melt to leak along with the withdrawn burner. The surface layer of the melt, solidified under rapid cooling, is brittle and easily breaks when a new burner is replaced, allowing for rapid ignition when re-ignition is required. For example, the second cooling system 106 operates intermittently. When the second cooling system 106 is not operating, it can be shut off or used as reserved space for installing other components (such as temperature sensors).

[0071] Therefore, if one submerged burner stops burning or a detachable part needs to be replaced, it will not affect the normal melting operation of other submerged burners. Furthermore, the power of other operating burners can be easily adjusted to ensure the heat required for melting.

[0072] Both the first cooling system 105 and the second cooling system 106 include piping systems. These piping systems allow cooling media to flow or circulate within the submerged burner assembly. In a preferred embodiment, the first cooling system 105 includes at least one circulation loop. This circulation loop preferably extends within the submerged burner along an axial and / or radial loop (e.g., a U-shape), defining a flow path for the first cooling media.

[0073] Furthermore, the second cooling system 106 extends through the entire submerged burner. "Extends" means that the second cooling system 106 passes through the submerged burner and is directly connected to the combustion surface 104. The second cooling system 106 is disposed inside the submerged burner. This application does not limit the positional relationship between the first cooling system 105 and the second cooling system 106. Exemplarily, the second cooling system 106 is disposed outside the first cooling system 105.

[0074] In this embodiment, in a kiln equipped with such submerged burners, those skilled in the art can determine the appropriate number of submerged burners in each kiln, for example, including 10 to 100, preferably 20 to 80. These submerged burners can be arranged in several parallel rows or columns. Each submerged burner includes at least one individual nozzle. The nozzles preferably have approximately the same diameter. For example, multiple nozzles can be arranged radially around a common center on the same burner. For example, multiple nozzles can also be arranged in an array of multiple rows or columns on the same burner. To ensure that the burner assembly has a certain heating capacity, each burner is typically equipped with 2 to 20 nozzles, preferably 3 to 6 nozzles.

[0075] according to Figure 4 As shown, the submerged burner is generally equipped with:

[0076] At least one fuel passage 402 for supplying fuel flow, with an outlet at one end; and

[0077] At least one oxidant channel 401 is provided for oxidant flow, with an oxidant channel outlet at one end, the oxidant channel being configured to surround the outer wall of a fuel channel. At least one fuel channel 402 and at least one oxidant channel 401 are arranged such that fuel from the outlet of the at least one fuel channel and oxidant from the outlet of the at least one oxidant channel mix with each other.

[0078] The contents of Chinese Patent Application No. CN202422161922.2 are incorporated herein by reference in their entirety. To optimize the space occupied by a submerged burner and the arrangement of fuel supply ports and oxidant supply ports, a common fuel channel and a common oxidant channel design can be adopted. All fuel channels are derived from the common fuel channel, and similarly, all oxidant channels are derived from the common oxidant channel. The inlet of the common fuel channel is fluidly connected to the fuel supply port; and the inlet of the common oxidant channel is fluidly connected to the oxidant supply port. In some embodiments, each fuel channel and each oxidant channel may be equipped with a flow regulating device, such as a distribution valve, which classifies fuel among multiple fuel channels or distributes oxidant among multiple oxidant channels.

[0079] The nozzle of the submerged burner forms a mixing channel at its end. The outlet of each fuel channel and the outlet of each oxidizer channel are fluidly connected to the mixing channel, so that the fuel and oxidizer are premixed in the mixing channel and flow out through the outlet of the mixing channel to be ejected.

[0080] One end of the submerged burner is a detachable portion 103 that is integrally conical, cylindrical, or annular, including at least a portion of a mixing channel, at least a portion of a first cooling system 105, and at least a portion of a second cooling system 106. This end, which is also the combustion surface 104 (hot end) of the burner, is in direct contact with the melt in the kiln.

[0081] One end of the detachable part 103 is alternatively fixed to the other parts of the submerged burner via the connecting part 101. The detachable part 103 is made of metal. The materials used to form the detachable part are not limited to this. The detachable part can be made of materials such as titanium, ceramics, or high-temperature resistant metals containing nickel and chromium, which are more heat-resistant than the nozzle. The thickness of the detachable part can be adjusted according to the operating conditions. The design of the detachable part makes it easy to replace and simple to install. When exposed to a flame such as a flashback, the detachable part may melt and break, thus protecting the submerged burner from burning. The method for replacing the detachable part in this case includes: separating the detachable part from the other parts of the submerged burner, and installing the housing of the replacement detachable part onto the connecting part 101 via a sliding fit (e.g., a threaded connection). It is known to those skilled in the art that the shape, number, and angle of the mixing channel section enclosed by the detachable part are adjustable to change the shape of the combustion flame.

[0082] Furthermore, cooling is crucial for submerged burners to prevent erosion and damage. The submerged burners in the examples described above can be configured with a third cooling system located partially or entirely around the outside of the burner. A third cooling medium circulates within this system to cool and lower the temperature of the submerged burner, preventing it from exceeding its maximum withstand temperature. Exemplarily, each submerged burner can be inserted into a third cooling system comprised of a cooling sleeve 201, collectively forming a submerged burner assembly. The size of the submerged burner assembly can be adjusted according to the heating location and required heating power.

[0083] According to an exemplary embodiment of this application, the above-described submerged burner assembly is provided. Although the overall structure of the burner assembly is not shown in the drawings for simplicity, those skilled in the art will understand its completeness.

[0084] according to Figure 2 As shown, the cooling sleeve 201 at least partially covers the periphery of the third cooling system. Exemplarily, the cooling sleeve 201 is permeated by a network of pipes suitable for the flow of the third cooling medium. The cooling sleeve 201 is removably secured to the wall of the kiln.

[0085] according to Figure 3The illustrated end view of the submerged burner shows a second cooling system 106 including a second cooling medium inlet and a second cooling medium outlet 301. In the second cooling system 106, at least one second cooling channel can be connected to both the second cooling medium inlet and the second cooling medium outlet 301 to allow the cooling medium to flow from the second cooling medium inlet through at least one second cooling channel to the second cooling medium outlet 301. Furthermore, the second cooling medium outlet 301 is different from the first cooling medium outlet. The second cooling medium inlet and the first cooling medium inlet can be shared or independently configured. When the second cooling medium inlet and the first cooling medium inlet are shared, a shut-off valve is provided to control the flow direction of the cooling medium. Therefore, the first cooling system 105 and the second cooling system 106 can be connected to separate piping systems for different cooling media. This allows for dedicated cooling circuit design and the creation of dedicated flow and pressure parameters.

[0086] In the event that a set of nozzles 302 needs to be replaced or a malfunction occurs at the burner end, the method for cooling the aforementioned submerged burner includes the following steps:

[0087] (1) The first cooling medium is circulated in the first cooling system 105 to continuously cool the submerged burner;

[0088] (2) When rapid cooling of the end of the submerged burner is required, a second cooling medium is introduced into the second cooling system 106;

[0089] (3) Stop the flow of the second cooling medium.

[0090] The first cooling medium and the second cooling medium are either liquids or gases. The first cooling medium and the second cooling medium are independently selected from water, air, nitrogen, or a solid-liquid mixture.

[0091] This method allows for the operation of a separate second cooling system 106 to achieve rapid cooling of the parts requiring replacement, preventing material leakage. Simultaneously, the method also allows for continued cooling by the first cooling system 105 to maintain normal melting in the molten pool.

[0092] A dedicated and independent second cooling system 106 is provided for the most vulnerable area of ​​the submerged burner (i.e., the front end), which can further prevent possible burn-out and damage. This avoids the need for furnace shutdown and facilitates the replacement of the removable part 103. Taking glass melting as an example, the second cooling system 106 sprays a second cooling medium, causing the molten glass to gradually solidify and harden when the temperature at the end of the submerged burner drops to around 700°C, and solidifies completely when the temperature drops to 400°C.

[0093] To simplify the installation process and achieve better cooling, those skilled in the art will understand that the submerged burner assembly, including the cooling sleeve, can also be placed in an installation space such as a common cooling block to achieve a dual cooling effect for the burner. For example, the outer surface of the burner, together with the common cooling block, defines a cooling channel for the cooling medium, thereby saving space and cost while achieving better cooling performance.

[0094] This application also provides a heating device, such as a kiln, which contains molten material and can be equipped with the aforementioned submerged burner. The submerged burner can be located in the bottom, side wall, or top wall of the kiln. The heating device can achieve various required power ranges by flexibly combining the burners.

[0095] Example 1

[0096] according to Figure 3 As shown, taking a submerged burner comprising four nozzles 302 as an example, the cross-section of the entire submerged burner is circular, with an outer diameter not exceeding 150 mm, preferably between 70 and 100 mm. In the case of irregular or non-circular shapes, its equivalent diameter can be understood to be no greater than 150 mm.

[0097] To reduce the risk of burner nozzle clogging when fuel and / or oxidizer are stopped, the orifice diameter of the plurality of nozzles 302 ranges from 0.5 to 15 mm, with a preferred range of 1 to 10 mm and an even more preferred range of 2 to 6 mm. To ensure effective fuel / oxidizer mixing and combustion stability, the length of each mixing channel in each nozzle is approximately 5 to 40 mm, with a preferred length of approximately 8 to 25 mm.

[0098] To reduce the risk of blockage in the second outlet 301 of the cooling medium in the second cooling system 106, the equivalent diameter of the second outlet 301 of the cooling medium is in the range of 0.5 to 10 mm, preferably 1 to 6 mm, and more preferably 2 to 4 mm.

[0099] To facilitate the replacement of submerged burners, the dimensions of each submerged burner and its cooling jacket must be matched. The difference between the outer diameter of the submerged burner and the inner diameter of the cooling jacket is between 0.5 and 10 mm, preferably between 1 and 4 mm. Figure 2 As shown, the combustion surface 104 of the submerged burner protrudes more than the end face of the cooling sleeve 201, for example, by 5 to 20 mm, to prevent high-temperature molten material from seeping into the gap between the submerged burner and the cooling sleeve.

[0100] The embodiments described in this specification are merely preferred embodiments of this application. These embodiments are only used to illustrate the technical solutions of this application and are not intended to limit the scope of this application. Any technical solutions that can be obtained by those skilled in the art based on the concept of this application through logical analysis, reasoning, or limited experimentation should be within the scope of this application.

Claims

1. An immersion burner having detachable parts, characterized in that, The submerged burner is equipped with a base (102), a connecting part (101), a detachable part (103), at least one fuel passage and at least one oxidant passage, a first cooling system (105) and a second cooling system (106) that are separated from each other; The connecting part (101) forms a connection mechanism between the base (102) and the detachable part (103), and the detachable part (103) is replaceably fixed to the connecting part (101). A circulation loop for the first cooling medium is formed within the first cooling system (105); The second cooling system (106) extends to the end of the submerged burner and is used to spray a second cooling medium around the combustion surface (104) of the submerged burner.

2. The submerged combustor of claim 1, wherein, The first cooling medium is continuously supplied to the first cooling system (105).

3. The submerged combustor of claim 1, wherein, The second cooling medium is introduced into the second cooling system (106) intermittently.

4. The submerged combustor of claim 1, wherein, In the second cooling system (106), at least one second cooling channel may be connected to a second inlet of cooling medium and a second outlet of cooling medium (301) so as to properly allow the cooling medium to travel from the second inlet of cooling medium through at least one second cooling channel to the second outlet of cooling medium (301).

5. The submerged combustor of claim 1, wherein, When the removable part (103) needs to be replaced, the second cooling system (106) sprays a second cooling medium onto the melt around the combustion surface (104).

6. The submerged combustor of claim 1, wherein, The second cooling system (106) allows the end of the submerged burner to be cooled independently of the first cooling system (105).

7. The submerged combustor of claim 1, wherein, The second cooling system (106) runs through the entire submerged burner.

8. The submerged combustor of claim 1, wherein, In the first cooling system (105), at least one first cooling channel may be connected to a first inlet of cooling medium and a first outlet of cooling medium so as to allow the first cooling medium to flow continuously from the first inlet of cooling medium through at least one first cooling channel to the first outlet of cooling medium.

9. The submersible burner according to claim 8, characterized in that, The first cooling channel extends from the first inlet of the cooling medium, partially or completely surrounds the submerged burner, and is connected to the first outlet of the cooling medium via a return pipe, guiding the heated first cooling medium to leave.

10. A burner assembly, characterized in that, include: The submersible burner according to any one of claims 1 to 9; and A cooling sleeve is provided, into which the submerged burner is inserted, and the cooling sleeve constitutes a third cooling system.

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