CN107036084B - Gas boiler - Google Patents
Gas boiler Download PDFInfo
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- CN107036084B CN107036084B CN201710333523.1A CN201710333523A CN107036084B CN 107036084 B CN107036084 B CN 107036084B CN 201710333523 A CN201710333523 A CN 201710333523A CN 107036084 B CN107036084 B CN 107036084B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
- F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
- F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
- F23C6/047—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure with fuel supply in stages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2201/00—Staged combustion
- F23C2201/10—Furnace staging
- F23C2201/101—Furnace staging in vertical direction, e.g. alternating lean and rich zones
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2201/00—Staged combustion
- F23C2201/30—Staged fuel supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The gas boiler comprises a mixer, a first combustion chamber, a second combustion chamber and the like, wherein the gas comprises a first part of gas and a second part of gas, the first part of gas and the auxiliary gas enter the first combustion chamber to be combusted once after being mixed in the mixer, namely lean combustion premixed combustion is performed, a second mixed gas is formed, the residual oxygen of the second mixed gas is lower, and the second mixed gas enters the second combustion chamber after part of heat is dissipated in the first combustion chamber. The second mixed gas is used as fuel gas in the second combustion chamber to be mixed with the second part of fuel gas entering through the second fuel gas pipeline and is subjected to secondary combustion, namely low-oxygen concentration supplementary combustion, so that the flue gas with lower residual oxygen is formed. The gas boiler couples lean premixed combustion and low oxygen concentration supplementary combustion, separates the areas where the two combustions occur, further reduces the emission of nitrogen oxides, has lower residual oxygen concentration in the flue gas, and improves the thermal efficiency of the boiler.
Description
Technical Field
The invention relates to the field of industrial heat supply, in particular to a gas boiler.
Background
In order to realize low nitrogen emission, the existing gas boiler adopts a lean-burn premixed combustion mode and is assisted with a metal mesh flame stabilizing or cyclone flame stabilizing measure. However, the low-nitrogen combustion technology of the existing gas boiler mostly solves the emission problem from the combustion angle, is not tightly combined with the heat exchange of the boiler, has the problems of increased heat loss of discharged smoke and reduced thermal efficiency of the boiler, and mostly has the problem of unstable combustion, which is a common problem of lean premixed combustion, and not only reduces the combustion efficiency, but also brings potential safety hazard to the operation of the boiler. In addition, the low-nitrogen combustion technology of the current gas boiler can reach that the emission concentration of nitrogen oxides is lower than 30mg/m 3 With the higher demands on the environment protection, new technologies are required to further reduce the emission concentration of nitrogen oxides.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a gas boiler that uses lean premixed combustion coupled with low oxygen concentration supplemental combustion and separates the region where the two combustions occur, reducing the emission of nitrogen oxides.
According to the gas boiler provided by the invention, the gas boiler comprises a material inlet, a cavity and a material outlet which are sequentially communicated, a material to be heated enters the cavity through the material inlet and is discharged from the material outlet after being heated, the gas boiler further comprises a mixer, a first combustion chamber, a second combustion chamber and a smoke outlet which are sequentially communicated, wherein the mixer is connected with a first gas pipeline and a combustion-supporting gas pipeline, the second combustion chamber is connected with a second gas pipeline, a first part of gas enters the mixer through the first gas pipeline and is mixed with combustion-supporting gas entering the mixer through the combustion-supporting gas pipeline to form a first mixed gas, the first mixed gas enters the first combustion chamber to be combusted to form a second mixed gas, the second mixed gas enters the second combustion chamber and is mixed with a second part of gas entering the second combustion chamber through the second gas pipeline to be combusted to form smoke, and the smoke is discharged through the smoke outlet.
Preferably, the first part of the fuel gas accounts for 40% to 55% of the total amount of the fuel gas, and the second part of the fuel gas accounts for 60% to 45% of the total amount of the fuel gas.
Preferably, at least part of the interior of the first combustion chamber is filled with a heat storage material.
Preferably, a porous barrier is provided in the first combustion chamber upstream and/or downstream of the thermal storage material.
Preferably, at least part of the inner wall of the first combustion chamber is provided with an insulating layer.
Preferably, the gas boiler further comprises: and the smoke channel is connected between the second combustion chamber and the smoke outlet.
Preferably, at least one layer of partition board is arranged in the flue gas channel, so that the flue gas channel is divided into at least two layers.
Preferably, the gas boiler further comprises: and one end of the spray gun is connected with the second gas pipeline, and the other end of the spray gun is provided with a nozzle and stretches into the second combustion chamber to spray the second part of gas from the second gas pipeline into the second combustion chamber.
Preferably, the second combustion chamber and the flue gas channel are sequentially arranged between the bottom surface and the top surface of the gas boiler from bottom to top, the mixer is positioned on a first side of the gas boiler, the flue gas outlet is positioned on a second side of the gas boiler opposite to the first side, and the second gas pipeline is connected with the second combustion chamber on the second side.
Preferably, the first combustion chamber communicates with the second combustion chamber on a second side of the gas boiler, and the second combustion chamber communicates with the flue gas channel on a first side of the gas boiler.
Preferably, the material inlet is located at the bottom surface, and the material outlet is located at the top surface.
Preferably, the inner wall of the second combustion chamber is provided with a protrusion protruding toward the nozzle at a position corresponding to the nozzle of the spray gun.
Preferably, at least part of the inner wall of the second combustion chamber is wavy.
Preferably, the gas boiler further comprises: the smoke gas exhausting device comprises a chimney and an induced draft fan, wherein the smoke gas outlet, the induced draft fan and the chimney are sequentially connected, and the induced draft fan guides smoke gas to be exhausted from the chimney through the smoke gas outlet.
The gas boiler comprises a mixer, a first combustion chamber and a second combustion chamber, wherein the gas comprises a first part of gas and a second part of gas, the first part of gas and the auxiliary gas enter the first combustion chamber for primary combustion after being mixed in the mixer, namely lean premixed combustion, so as to form a second mixed gas, the residual oxygen of the second mixed gas is lower, and the second mixed gas enters the second combustion chamber after losing part of heat in the first combustion chamber. The second mixed gas is used as fuel gas in the second combustion chamber to be mixed with the second part of fuel gas entering through the second fuel gas pipeline and is subjected to secondary combustion, namely low-oxygen concentration supplementary combustion, so that the flue gas with lower residual oxygen is formed. The gas boiler couples lean premixed combustion and low oxygen concentration supplementary combustion, separates the areas where the two combustions occur, further reduces the emission of nitrogen oxides, has lower residual oxygen concentration in the flue gas, and improves the thermal efficiency of the boiler.
In a preferred embodiment, the first part of the fuel gas accounts for 40 to 55 percent of the total amount of the fuel gas, and the concentration of nitrogen oxides in the second mixed gas generated by the primary combustion is 1mg/m 3 To 3mg/m 3 The concentration of carbon monoxide is 10mg/m 3 Hereinafter, the residual oxygen concentration is 10% to 13%, the temperature is 600 ℃ to 800 ℃, and the temperature is reduced to 400 ℃ to 500 ℃ after a part of heat is dissipated in the first combustion chamber. The rest of the second part of the fuel gas accounting for 60 to 45 percent of the total amount of the fuel gas is mixed with the second mixed gas which dissipates part of heat and is cooled down, and secondary combustion is carried out to form flue gas, and the concentration of nitrogen oxides in the flue gas is 8mg/m 3 To 10mg/m 3 The concentration of carbon monoxide is 10mg/m 3 The residual oxygen concentration is about 1% below, and the temperature is 800 ℃ to 1000 ℃ and the temperature can be reduced to 120 ℃ or lower after continuing heat dissipation in the second combustion chamber. Compared with the prior art, the gas boiler can realize that the emission concentration of nitrogen oxides in combustion products is 8mg/m 3 To 10mg/m 3 The ultra-low emission concentration and ultra-clean emission level of the boiler are achieved, and meanwhile, the oxygen concentration in the flue gas reaches about 1%, so that the extremely high thermal efficiency of the boiler can be ensured.
At least part of the interior of the first combustion chamber may be filled with a heat accumulating material, upstream and/or downstream of which a porous barrier may be provided. The heat storage material can provide a space for primary combustion, so that the problem of poor fuel combustion stability is solved, the porous baffle can clamp and protect the heat storage material on one hand, and on the other hand, the air flow passing through the porous baffle can be more uniform, and the sufficient combustion is promoted. Furthermore, at least part of the inner wall of the first combustion chamber may be provided with an insulating layer so that the temperature of the primary combustion products does not decrease too much.
The gas boiler may further comprise a lance having a spout at one end thereof and extending into the second combustion chamber such that the second portion of the gas may be more uniformly injected into the second combustion chamber through the spout of the lance.
The wall of the second combustion chamber can be provided with a bulge protruding towards the nozzle at the nozzle corresponding to the spray gun, the throat is formed in the flowing direction of the second mixed gas to close up, the flowing speed of the second mixed gas at the nozzle of the spray gun is improved, and the mixing effect and the diffusion combustion effect of the second mixed gas serving as secondary combustion auxiliary gas and the second part of gas are improved. In addition, the inner wall surface of at least part of the wall of the second combustion chamber can be wavy, so that the heat exchange area is increased, and the heat exchange efficiency of radiating heat into materials is improved.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 shows a schematic configuration of a gas boiler according to an embodiment of the present invention.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. For clarity, the various features of the drawings are not drawn to scale. Furthermore, some well-known portions may not be shown. Numerous specific details are set forth in the following description, but as will be appreciated by those skilled in the art, the invention may be practiced without such specific details.
It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.
Fig. 1 shows a schematic structural diagram of a gas boiler according to an embodiment of the present invention, which comprises a mixer 101, a first combustion chamber 102, a second combustion chamber 103 and a flue gas outlet 105, which are sequentially communicated, wherein the mixer 101 is connected with a first gas pipeline 302 and a combustion-supporting gas pipeline 202, and the second combustion chamber 103 is connected with a second gas pipeline 402.
The fuel gas comprises a first part of fuel gas B1 and a second part of fuel gas B2, wherein the first part of fuel gas B1 enters the mixer 101 through a first fuel gas pipeline 301 and is mixed with combustion-supporting gas A entering the mixer 101 through a fuel gas pipeline 201 to form a first mixed gas, the first mixed gas enters the first combustion chamber 102 to be combusted to form a second mixed gas, and the second mixed gas enters the second combustion chamber 103 and is mixed with the second part of fuel gas B2 entering the second combustion chamber 103 through a second fuel gas pipeline 402 to be combusted to form flue gas C, and the flue gas C is discharged through a flue gas outlet.
At least part of the walls of the first combustion chamber 102 and the second combustion chamber 103 are hollow to form a cavity 108 which is mutually communicated, the gas-fired boiler further comprises a material inlet 106 and a material outlet 107, wherein the material inlet 106, the cavity 108 and the material outlet 107 are sequentially communicated, and low-temperature materials D1 to be heated are heated by entering the cavity 108 through the material inlet 106 and then are converted into high-temperature materials D2, and the high-temperature materials D2 are discharged from the material outlet 107.
The gas boiler comprises a mixer 101, a first combustion chamber 102 and a second combustion chamber 103, wherein the gas can be divided into a first part of gas B1 and a second part of gas B2, the first part of gas B1 and combustion-supporting gas A are mixed in the mixer 101 and then enter the first combustion chamber 102 for primary combustion, namely lean premixed combustion, so as to form a second mixed gas, the residual oxygen of the second mixed gas is lower, and part of heat is dissipated in the first combustion chamber 102 and then enters the second combustion chamber 103. The second mixed gas is mixed as a fuel gas in the second combustion chamber 103 with the second part of the fuel gas B2 entering through the second fuel gas pipeline 402 and is subjected to secondary combustion, namely, low oxygen concentration supplementary combustion, so as to form a flue gas C with lower residual oxygen. The gas boiler couples lean premixed combustion and low oxygen concentration supplementary combustion, separates the areas where the two combustions occur, further reduces the emission of nitrogen oxides, has lower residual oxygen concentration in the flue gas C, improves the thermal efficiency of the boiler, combines the recovered heat with the combustion, and simultaneously achieves the low-nitrogen target and the high-thermal efficiency target.
The first valve 202 may be disposed on the gas-assisted pipeline 201, the first valve 302 may be disposed on the first gas pipeline 301, the third valve 402 may be disposed on the second gas pipeline 401, and the first valve 202, the second valve 302 and the third valve 402 are respectively used for controlling the flow rates of the gas-assisted A, the first part of gas B1 and the second part of gas B2.
The fuel gas is, for example, natural gas, and the combustion-supporting gas a may be air. The low temperature material D1, i.e. the material to be heated, is for example water, and correspondingly the heated high temperature material D2 may be hot water or steam.
Preferably, the first part of the fuel gas B1 accounts for 40 to 55 percent of the total fuel gas, and the concentration of nitrogen oxides in the second mixed gas generated by the primary combustion is 1mg/m 3 To 3mg/m 3 The concentration of carbon monoxide is 10mg/m 3 Hereinafter, the residual oxygen concentration is 10% to 13%, the temperature is 600 ℃ to 800 ℃, and the temperature is reduced to 400 ℃ to 500 ℃ after a part of heat is dissipated in the first combustion chamber. The rest of the second part of fuel gas B2 accounting for 60 to 45 percent of the total amount of the fuel gas is mixed with the second mixed gas which dissipates part of heat and is cooled down, and secondary combustion is carried out to form flue gas C, and the concentration of nitrogen oxides in the flue gas C is 8mg/m 3 To 10mg/m 3 The concentration of carbon monoxide is 10mg/m 3 The residual oxygen concentration is about 1% below, and the temperature is 800 ℃ to 1000 ℃ and the temperature can be reduced to 120 ℃ or lower after continuing heat dissipation in the second combustion chamber. Compared with the prior art, the gas boiler can realize that the emission concentration of nitrogen oxides in combustion products is 8mg/m 3 To 10mg/m 3 The ultra-low emission concentration and ultra-clean emission level of the boiler are achieved, and meanwhile, the oxygen concentration in the flue gas reaches about 1%, so that the extremely high thermal efficiency of the boiler can be ensured.
The gas boiler may further comprise a flue gas channel 104 connected between the second combustion chamber 103 and the flue gas outlet 105, at least part of the walls of the flue gas channel 104 may also be hollow, forming part of the cavity 108. At least one layer of separator 115 may be disposed within the flue gas channel 104 such that the flue gas channel 104 is separated into at least two layers. At least a portion of the at least one layer of spacers 115 may also be hollow and also form part of the cavity 108. By adding at least one layer of baffle 115, on one hand, the distribution of the flue gas C is more uniform, and on the other hand, the heat exchange area with the material D1 in the cavity 108 is increased.
The gas boiler of the present embodiment is substantially prismatic, and has a bottom surface M1, a top surface M2, and opposite first and second sides M3 and M4, wherein the first combustion chamber 102, the second combustion chamber 103, and the flue gas channel 104 are disposed between the bottom surface M1 and the top surface M2 in sequence from bottom to top, the mixer 101 is located on the first side M3, and the flue gas outlet 105 is located on the second side M4.
The first combustion chamber 102 is communicated with the second combustion chamber 103 at the second side M4, and the second combustion chamber 103 is communicated with the flue gas channel 104 at the first side M3, so that the first combustion chamber 102, the second combustion chamber 103 and the flue gas channel 104 which are communicated with each other are approximately S-shaped in cross section, combustion products can have longer stroke in the gas boiler, and heat exchange efficiency is improved. It will be appreciated that the specific shape of the gas boiler and the arrangement of the first combustion chamber 102, the second combustion chamber 103 and the flue gas channel 104 may not be limited to this, for example, in other embodiments, the side surface of the gas boiler is curved, the first combustion chamber 102, the second combustion chamber 103 and the flue gas channel 104 may still be arranged from bottom to top, and the connection position of the first combustion chamber 102 and the second combustion chamber 103 and the connection position of the second combustion chamber 103 and the flue gas channel 104 are opposite, and a longer stroke of the combustion product may also be obtained. In order to achieve the best heat efficiency of the gas boiler, the heat exchange surface of the gas boiler is also required to be arranged to be specially designed in cooperation with the parameters of the combustion flue gas.
The material inlet 106 may be located at the bottom surface M1, and the material outlet 107 may be located at the top surface M2, so that the low-temperature material D1 may also have a larger stroke between the material inlet 106 and the material outlet 107, thereby improving heat exchange efficiency.
At least part of the interior of the first combustion chamber 102 may be filled with the heat storage material 109, and the present embodiment fills the heat storage material 109 in the first combustion chamber 102 at a position near the mixer 101. A porous barrier 110 may be provided upstream and/or downstream of the thermal storage material 109 within the first combustion chamber 102. The porous stopper 110 in this embodiment is formed of a stopper brick, and is provided both upstream and downstream of the heat storage material 109.
The thermal storage material 109 can provide a space for primary combustion, solving the problem of lean combustion stability. The porous barrier 110 can clamp and protect the heat storage material 109 on the one hand, and can make the air flow passing through the porous barrier 109 more uniform on the other hand, and promote sufficient combustion. Furthermore, at least part of the inner wall of the first combustion chamber 102 may be provided with a first heat-retaining layer 111 so that the temperature of the primary combustion products does not decrease too much, preferably supporting secondary combustion.
The gas boiler may further comprise a lance 112, one end of the lance 112 being connected to the second gas line 401, the other end being provided with a nozzle 113 and extending into the second combustion chamber 103, a second portion of gas B2 being injected into the second combustion chamber 103 from said nozzle 113 via the second gas line 401 and the lance 112. By providing the lance 112, the second portion of the fuel gas B2 can be more uniformly injected into the second combustion chamber 103 through the nozzle 113 of the lance 112, and the secondary combustion efficiency is improved.
The lance 112 of the present embodiment extends from the second side M4 of the gas boiler into the second combustion chamber 103. Further, the inner wall of the second combustion chamber 103 is provided with a protrusion 114 protruding towards the nozzle 113 at the nozzle 113 corresponding to the spray gun 112 to form a narrow flow structure, so that the second combustion chamber 103 forms a throat opening in the flowing direction of the second mixed gas, the flowing speed of the second mixed gas at the nozzle 113 of the spray gun 112 is improved, and the mixing effect and the diffusion combustion effect of the second mixed gas serving as secondary combustion auxiliary gas and the second part of gas B2 are improved.
At least part of the inner wall of the second combustion chamber 103 can be wavy, so that the heat exchange area is increased, and the heat exchange efficiency of radiating heat into the material is improved.
The second heat insulation layer 116 is arranged on at least part of the outer walls of the first combustion chamber 102, the second combustion chamber 103 and the flue gas channel 104, and in this embodiment, the second heat insulation layer 116 covers all the first combustion chamber 102, the second combustion chamber 103 and the flue gas channel 104, so that the dissipation of heat of materials in the cavity 108 can be reduced.
The gas boiler may further comprise a chimney 118 and an induced draft fan 117, wherein the flue gas outlet 105, the induced draft fan 117 and the chimney 118 are connected in sequence, and the induced draft fan 117 guides the flue gas C to be discharged from the chimney 118 through the flue gas outlet 105.
It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Embodiments in accordance with the present invention, as described above, are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (14)
1. A gas boiler is characterized by comprising a material inlet, a cavity and a material outlet which are communicated in sequence, wherein the material to be heated enters the cavity through the material inlet and is discharged from the material outlet after being heated,
the gas boiler further comprises a mixer, a first combustion chamber, a second combustion chamber and a flue gas outlet which are sequentially communicated, wherein the mixer is connected with a first gas pipeline and a combustion-supporting gas pipeline, the second combustion chamber is connected with a second gas pipeline,
the first part of fuel gas enters the mixer through the first fuel gas pipeline and is mixed with combustion-supporting gas entering the mixer through the combustion-supporting gas pipeline to form first mixed gas, the first mixed gas enters the first combustion chamber to be combusted to form second mixed gas, the second mixed gas enters the second combustion chamber to be mixed with second part of fuel gas entering the second combustion chamber through the second fuel gas pipeline to be combusted to form flue gas, and the flue gas is discharged through the flue gas outlet.
2. A gas boiler according to claim 1, wherein the first portion of gas is 40% to 55% of the total amount of gas and the second portion of gas is 60% to 45% of the total amount of gas.
3. A gas boiler according to claim 1, wherein at least part of the interior of the first combustion chamber is filled with a heat storage material.
4. A gas boiler according to claim 3, wherein a porous barrier is provided upstream and/or downstream of the heat accumulating material in the first combustion chamber.
5. A gas boiler according to claim 1, wherein at least part of the inner wall of the first combustion chamber is provided with a heat insulating layer.
6. The gas boiler according to claim 1, further comprising:
and the smoke channel is connected between the second combustion chamber and the smoke outlet.
7. A gas boiler according to claim 6, wherein at least one layer of partition plates is provided in the flue gas channel, such that the flue gas channel is divided into at least two layers.
8. The gas boiler according to claim 1, further comprising:
and one end of the spray gun is connected with the second gas pipeline, and the other end of the spray gun is provided with a nozzle and stretches into the second combustion chamber to spray the second part of gas from the second gas pipeline into the second combustion chamber.
9. The gas boiler according to claim 6, wherein the second combustion chamber and the flue gas channel are arranged between the bottom surface and the top surface of the gas boiler in sequence from bottom to top, the mixer is located at a first side of the gas boiler, the flue gas outlet is located at a second side of the gas boiler opposite to the first side, and the second gas pipeline is connected to the second combustion chamber at the second side.
10. The gas boiler of claim 9, wherein the first combustion chamber communicates with the second combustion chamber on a second side of the gas boiler, and the second combustion chamber communicates with the flue gas channel on a first side of the gas boiler.
11. A gas boiler according to claim 9, wherein the material inlet is located at the bottom surface and the material outlet is located at the top surface.
12. A gas boiler according to claim 8, wherein the inner wall of the second combustion chamber is provided with a projection projecting toward the nozzle at a position corresponding to the nozzle of the lance.
13. A gas boiler according to claim 1, wherein at least part of the inner wall of the second combustion chamber is wavy.
14. The gas boiler according to claim 1, further comprising:
the smoke gas exhausting device comprises a chimney and an induced draft fan, wherein the smoke gas outlet, the induced draft fan and the chimney are sequentially connected, and the induced draft fan guides smoke gas to be exhausted from the chimney through the smoke gas outlet.
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| CN201710333523.1A CN107036084B (en) | 2017-05-12 | 2017-05-12 | Gas boiler |
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| CN201710333523.1A CN107036084B (en) | 2017-05-12 | 2017-05-12 | Gas boiler |
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| CN107036084B true CN107036084B (en) | 2023-07-21 |
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| CN108895472A (en) * | 2018-06-28 | 2018-11-27 | 重庆化医太湖锅炉股份有限公司 | A kind of energy conservation alkal melting pan technique |
| CN108895471A (en) * | 2018-06-28 | 2018-11-27 | 重庆化医太湖锅炉股份有限公司 | A kind of energy conservation alkal melting pan process system |
| CN112629025A (en) * | 2019-10-08 | 2021-04-09 | 沈阳工程学院 | Solid electric heat storage-boiler system for low-oxygen heat exchange |
| CN111425854B (en) * | 2019-11-13 | 2022-03-29 | 北京华通兴远供热节能技术有限公司 | Gas boiler |
| CN113405090A (en) * | 2020-03-17 | 2021-09-17 | 北京佳德昌科技有限责任公司 | Regenerative oxidation low-nitrogen combustion method |
| CN114234177B (en) * | 2021-12-17 | 2024-04-12 | 深圳市佳运通电子有限公司 | Ultralow nitrogen combustion system and working method thereof |
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| EP1332316A1 (en) * | 2000-11-09 | 2003-08-06 | Fritz Dr.-Ing. Schoppe | Method for firing an oil firing or gas firing boiler with a dust-like fuel |
| CN102230626A (en) * | 2011-06-02 | 2011-11-02 | 中冶京诚工程技术有限公司 | Transverse baffle and flat pipe type self-preheating burner |
| CN104114947A (en) * | 2012-03-05 | 2014-10-22 | (株)庆东Navien公司 | Gas-air mixing device for combustion apparatus |
| CN206846692U (en) * | 2017-05-12 | 2018-01-05 | 海湾环境科技（北京）股份有限公司 | Gas fired-boiler |
| CN212408650U (en) * | 2020-05-13 | 2021-01-26 | 广东省特种设备检测研究院顺德检测院 | Low-nitrogen energy-saving gas boiler |
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