CN212132425U - Combustor, natural gas reformer, and SOFC power generation system - Google Patents
Combustor, natural gas reformer, and SOFC power generation system Download PDFInfo
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- CN212132425U CN212132425U CN201922392389.XU CN201922392389U CN212132425U CN 212132425 U CN212132425 U CN 212132425U CN 201922392389 U CN201922392389 U CN 201922392389U CN 212132425 U CN212132425 U CN 212132425U
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a combustor, natural gas reforming unit and SOFC power generation system. The combustor comprises a positioning cylinder, an air chamber partition plate, a temperature adjusting cylinder, a premixing air cover, a premixer, a gas inlet pipe and an air inlet pipeline. The air chamber partition plate is positioned in the positioning cylinder, and the space below the air chamber partition plate forms a heat preservation cavity; the temperature adjusting cylinder is connected above the positioning cylinder, an air distribution plate is arranged at the joint of the temperature adjusting cylinder and the positioning cylinder, air distribution holes are formed in the air distribution plate, the temperature adjusting cylinder is communicated with the positioning cylinder, and an ignition device is arranged in the temperature adjusting cylinder; the premixing fan cover is connected between the air distribution plate and the air chamber partition plate, and a space surrounded by the premixing fan cover, the air distribution plate and the positioning cylinder forms an air distribution cavity; the premixer is positioned in the premixing air cover and is communicated with the premixing air cover and the temperature adjusting cylinder; the gas inlet pipe is communicated with the premixer; the air inlet pipeline is communicated to the air distribution cavity. According to the burner of the utility model, the flame is stable and is not influenced by the wind volume; the temperature adjusting range is wide, and the requirements of low-temperature long-time slow start and quick start can be met.
Description
Technical Field
The utility model relates to a fuel cell technical field particularly relates to a combustor, natural gas reforming unit and SOFC power generation system.
Background
SOFC (Solid Oxide Fuel Cell) uses electrochemical reaction to generate electricity, and has various advantages: the power generation efficiency is high, and is about 50% -60% in the current technical level; the device has no moving parts, and does not generate vibration and noise; the working temperature is approximately between 700 and 800 ℃, the chemical property of nitrogen is stable in the temperature range, no nitrogen oxide is generated, and the method is environment-friendly; the requirement on the quality of a gas source is not high, the hydrogen-rich gas is only needed, and the fuel has wide application. Therefore, due to the energy saving and environmental protection properties of SOFC, it is regarded as one of the important ways of new energy utilization in the future.
The hydrogen-rich gas used by the SOFC needs to be generated by reforming hydrogen production equipment, the reaction for preparing the hydrogen is an endothermic reaction, and a heating device is needed to provide heat required by the reaction. The existing reforming hydrogen production equipment mainly provides a heat source in an electric heating mode, and a small part of reforming hydrogen production equipment heated by using fossil fuel also needs to continuously feed fuel from the outside. Reforming hydrogen production equipment heated by fossil fuel mostly adopts a direct combustion or catalytic combustion mode to release heat. Reforming hydrogen production equipment adopting catalytic combustion has the defects of complex structure, difficult maintenance, high cost, slow temperature rise and long start-up time; the burner of the reforming hydrogen production equipment adopting direct combustion has the defects of large structure, difficult ignition, unstable combustion, incomplete combustion and the like.
Accordingly, there is a need to provide a combustor, natural gas reformer, and SOFC power generation system that at least partially address the problems of the prior art.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
To at least partially solve the above problem, a first aspect of the present invention provides a combustor, which includes a stack, the combustor including:
a positioning cylinder;
the air chamber partition plate is positioned inside the positioning cylinder, and a heat preservation cavity is formed in the space below the air chamber partition plate in the positioning cylinder;
the temperature adjusting cylinder is connected above the positioning cylinder, an air distribution plate is arranged at the joint of the temperature adjusting cylinder and the positioning cylinder, air distribution holes are formed in the air distribution plate, the temperature adjusting cylinder is communicated with the positioning cylinder, and an ignition device is arranged in the temperature adjusting cylinder;
the premixing fan cover is connected between the air distribution plate and the air chamber partition plate, and a space surrounded by the premixing fan cover, the air distribution plate and the positioning barrel forms an air distribution cavity;
the premixer is positioned in the premixing air cover and is communicated with the premixing air cover and the temperature adjusting cylinder;
the gas inlet pipe is communicated with the premixer and is used for inputting fuel into the premixer;
and the air inlet pipeline is communicated to the air distribution cavity and simultaneously conveys air to the premixer and the temperature adjusting cylinder.
According to the burner of the natural gas reforming device for the SOFC power generation system, the flame generated by the gas is stable and is not influenced by the wind volume; the temperature adjusting range is wide, and the requirements of low-temperature long-time slow start and quick start can be met; the ignition is simple and the operation is convenient.
Further, the positioning cylinder is constructed into a cylinder with a closed bottom end, the premixer penetrates through the air chamber partition plate, the gas inlet pipe penetrates through the positioning cylinder from the bottom of the combustor and is connected to the premixer, and a perforation is formed in the outer wall of the premixer.
Furthermore, the temperature adjusting cylinder is in a cylindrical shape with openings at two ends, the outer diameter of the temperature adjusting cylinder corresponds to the inner diameter of the positioning cylinder, the temperature adjusting cylinder is inserted into the positioning cylinder from the upper part of the positioning cylinder, the upper part of the premixing fan housing is provided with a positioning opening, and the temperature adjusting cylinder is connected to the premixing fan housing through the positioning block.
Further, an air flow regulating valve is arranged on the air inlet pipeline, and a gas regulating valve is arranged on the gas inlet pipe.
Further, the combustor also comprises a combustion nozzle communicated to the premixer from the upper part of the premixer, the ignition device is positioned at the side of the combustion nozzle and is spaced from the combustion nozzle,
the premixer is at least partially constructed into a diameter-variable structure with two wide ends and a narrow middle in the length direction of the positioning cylinder so as to improve the speed of mixed gas entering the combustion nozzle.
Further, the combustor further comprises a flame detection device which is arranged on the side of the combustion nozzle and is spaced from the combustion nozzle and the ignition device.
Further, the combustor still includes the flame safety cover, the flame safety cover structure is the tube-shape to the cover is established flame detection device ignition with the outside of burner nozzle.
Furthermore, the bottom of the positioning cylinder is provided with a fire observation hole for observing the combustion condition of flame and detecting the combustion starting state in cooperation with the flame detection device.
A second aspect of the present invention provides a natural gas reforming device for an SOFC power generation system, the SOFC power generation system includes an electric pile, the natural gas reforming device includes:
the reforming heat exchanger is used for reforming natural gas into hydrogen-rich gas; and
the burner of the first aspect is located below the reforming heat exchanger and is in communication with the reforming heat exchanger, and is configured to provide the reforming heat exchanger with a hot gas required to start a reforming reaction.
According to the natural gas reforming device for the SOFC power generation system, the reforming heat exchanger provides heat for the reforming reaction by utilizing the combustor, and the flame is stable and is not influenced by the air volume; the temperature adjusting range is wide, and the requirements of low-temperature long-time slow start and quick start can be met; the ignition is simple and the operation is convenient.
The third aspect of the present invention provides a SOFC power generation system, comprising:
a stack including a cathode exhaust and an anode inlet;
the reforming heat exchanger comprises a reforming exhaust pipe, the reforming exhaust pipe is communicated with the anode gas inlet, and the reforming heat exchanger is used for reforming natural gas into hydrogen-rich gas and providing the hydrogen-rich gas for the electric pile through the reforming exhaust pipe;
the combustor of the first aspect is located below the reforming heat exchanger and is communicated with the reforming heat exchanger, and the air inlet pipe is communicated with the cathode air outlet to convey the cathode gas from the stack to the reforming heat exchanger.
According to the SOFC power generation system of the utility model, the natural gas reforming device utilizes the combustor to provide heat for the reforming reaction, and the gas flame is stable and is not influenced by the wind volume; the temperature adjusting range is wide, and the requirements of low-temperature long-time slow start and quick start can be met; the ignition is simple and the operation is convenient.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.
In the drawings:
fig. 1 is a schematic perspective view of a natural gas reformer according to the present invention;
FIG. 2 is a schematic cross-sectional view of the natural gas reformer of FIG. 1;
fig. 3 is a schematic perspective view of a burner of a natural gas reformer according to the present invention;
FIG. 4 is a schematic cross-sectional view of the burner of FIG. 3;
fig. 5 is a schematic view of the operation of the burner of the natural gas reforming apparatus according to the present invention.
Description of reference numerals:
100: natural gas reformer 200: reforming heat exchanger
300: the burner 310: gas inlet pipe
311: the gas nozzle 320: air inlet duct
330: the premixer 331: combustion nozzle
332: the ignition device 333: flame detection device
340: the positioning cylinder 341: air chamber partition plate
342: the premixing air cover 343: heat preservation cavity
344: air distribution chamber 350: temperature adjusting cylinder
351: air distribution plate 352: locating block
353: flame protection cover 360: fire observation hole
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the following description, a detailed description will be given for a thorough understanding of the present invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
Fig. 3 and 4 show a burner of a natural gas reformer for a SOFC power generation system according to a preferred embodiment of the present invention, which includes a positioning cylinder 340, an air chamber partition 341, a temperature-adjusting cylinder 350, a premixing air cover 342, a premixer 330, a gas inlet pipe 310, and an air inlet pipe 320.
The air chamber partition plate 341 is positioned inside the positioning cylinder 340, and a space below the air chamber partition plate 341 in the positioning cylinder 340 forms a heat preservation cavity 343; the temperature adjusting cylinder 350 is connected above the positioning cylinder 340, an air distribution plate 351 is arranged at the joint of the temperature adjusting cylinder 350 and the positioning cylinder 340, a plurality of air distribution holes are formed in the air distribution plate 351, and the diameter of each air distribution hole is about 2 mm. The temperature adjusting cylinder 350 is communicated with the positioning cylinder 340, and the ignition device 332 is arranged in the temperature adjusting cylinder 350; the premixing air cover 342 is connected between the air distribution plate 351 and the air chamber partition 341, and a space surrounded by the premixing air cover 342, the air distribution plate 351 and the positioning cylinder 340 forms an air distribution cavity 344; the premixer 330 is positioned in the premixing air cover 342 and is communicated with the premixing air cover 342 and the temperature regulating cylinder 350; the gas inlet pipe 310 is communicated with the premixer 330 for inputting fuel into the premixer 330; the air inlet conduit 320 communicates to the air distribution plenum 344, delivering air to both the premixer 330 and the attemperating cartridge 350.
According to the utility model, the flame is stable and is not affected by the wind amount; the temperature adjusting range is wide, and the requirements of low-temperature long-time slow start and quick start can be met; the ignition is simple and the operation is convenient.
When the utility model discloses a combustor is when being used for SOFC power generation system's natural gas reforming unit's part, and the one end of air admission pipeline 320 communicates to the air distribution chamber 344, and the other end communicates to the negative pole gas vent of pile, carries the air that comes from the negative pole of pile to premixer 330 and tempering cylinder 350 simultaneously. The natural gas reforming device for SOFC power generation system of the present invention will be described in detail with reference to fig. 1 to 5.
Referring to fig. 1 and 2, the natural gas reforming device 100 includes a reforming heat exchanger 200 and a combustor 300. The reforming heat exchanger 200 is used to perform a reforming reaction, and the combustor 300 is located below the reforming heat exchanger 200 and is used to provide heat for the reforming reaction during a start-up stage of the SOFC power generation system. The natural gas reformer 100 thus converts the raw material gas into reformed gas, and supplies the reformed gas to the stack of the SOFC power generation system for electrochemical reaction, converting chemical energy into electric energy. The feed gas is preferably natural gas, more preferably a mixed gas of natural gas and steam. The reformate gas is preferably a hydrogen-rich gas. The fuel used by the burner 300 is preferably natural gas. The burner 300 is preferably made of stainless steel. The natural gas reformer 100 has a length of about 1m, a diameter of about 20cm, and a weight within 20kg, and primarily provides reformate gas to a stack having a power rating of about 1 kw.
Referring now to fig. 3, 4 and 5, the main body of the burner 300 is composed of a positioning cylinder 340 and a temperature-adjusting cylinder 350. The positioning cylinder 340 is configured as a cylinder with a closed bottom end, the temperature adjusting cylinder 350 is configured as a cylinder with two open ends, and the outer diameter of the temperature adjusting cylinder 350 corresponds to the inner diameter of the positioning cylinder 340, so that the temperature adjusting cylinder 350 can be inserted into the positioning cylinder 340 from the upper part of the positioning cylinder 340. The outer diameter of the temperature-adjusting cartridge 350 also corresponds to the bottom inner diameter of the reforming heat exchanger 200 so that the temperature-adjusting cartridge 350 can be easily coupled to the reforming heat exchanger 200.
Specifically, referring to fig. 4, a premixer 330, a plenum partition 341, and a premix air cover 342 are disposed in the positioning barrel 340. The air chamber partition plate 341 is positioned at the upper part of the positioning cylinder 340, and the space below the air chamber partition plate 341 forms a heat preservation cavity 343. The heat preservation cavity 343 is at least partially filled with heat preservation materials to isolate the high temperature of the temperature adjusting cylinder 350, so that the safety of the gas inlet end of the gas inlet pipe 310 is ensured when the burner 300 operates.
The premixing air cover 342 is located above the air chamber partition 341 and connected to the air chamber partition 341, the premixing air cover 342 and the positioning cylinder 340 are in a substantially concentric structure, and a space between the premixing air cover 342 and the side wall of the positioning cylinder 340 forms an air distribution chamber 344. The premixing fan housing 342 is provided with a positioning opening at the upper part thereof, and the temperature adjusting cylinder 350 is connected to the premixing fan housing 342 through a positioning block 352. The premixer 330 is disposed inside the premixing air cover 342 and passes through the air chamber partition 341, and the outer wall of the premixer 330 is provided with a through hole. The premixing fan housing 342 is formed with a plurality of small holes, each of which has a diameter of about 8mm, and the plurality of small holes are arranged circumferentially, so that the premixer 330 is communicated with the air distribution chamber 344 through the through holes and the small holes of the premixing fan housing 342.
A gas inlet pipe 310 passes through the positioning cylinder 340 from the bottom of the burner 300 and is connected to the premixer 330 for inputting fuel into the premixer 330; the air inlet duct 320 is connected at one end to the air distribution chamber 344 and at the other end to the cathode exhaust port of the stack. The top of the fuel gas inlet pipe 310 is provided with a fuel gas nozzle 311, fuel from the fuel gas inlet pipe 310 is injected into the premixer 330 through the fuel gas nozzle 311, and air and fuel from the cathode of the stack are mixed into a mixed gas in the premixer 330.
The bottom of the temperature adjusting cylinder 350 is provided with an air distribution plate 351 which is provided with air distribution holes. The temperature control cylinder 350 also has a combustion nozzle 331, an ignition device 332, a flame detection device 333, and a flame protection cover 353. The combustion nozzle 331 is disposed above the premixer 330 and communicates with the premixer 330, and the mixture gas mixed in the premixer 330 is ejected from the combustion nozzle 331, and the combustion nozzle 331 is preferably made of a conductive material. The top surface of the combustion nozzle 331 is provided with 8 gas injection holes of 2mm to enable the mixture gas to be uniformly injected.
The ignition device 332 and the flame detection device 333 are disposed at both sides of the combustion nozzle 331, and are spaced apart from each other. The ignition device 332 is used to emit an arc toward the combustion nozzle 331 to ignite the mixture gas. The flame detection device 333 is used to detect the combustion condition of the flame, and when successful ignition is detected, the ignition device 332 stops discharging. The flame protection cap 353 is configured in a cylindrical shape and is fitted over the flame detection device 333, the ignition device 332, and the combustion nozzle 331, for maintaining the stability of the flame during high-wind-volume and/or low-temperature combustion.
In addition, the upper portion of the premixer 330 is configured as a tapered structure that is narrow first and then wide to increase the speed of the mixture gas entering the combustion nozzle 331. The reducing structure may be a venturi structure. The bottom of the positioning cylinder 340 is provided with a fire observation hole 360 for observing the combustion condition of the flame. The fire observation holes 360 extend into the insulating cavity 343, through the insulating material, so that the flame can be observed. The burner start-up condition is preferably detected by the use of a fire aperture 360 in cooperation with a flame detection device 333.
An air flow regulating valve is arranged on the air inlet pipe 320, and a gas regulating valve is arranged on the gas inlet pipe 310 to facilitate the regulation of the flow. The bottom of the burner 300 also has a snap-in seat for securing the burner 300, and the snap-in seat is preferably a flange.
Operation of the combustor 300 referring to fig. 5, air from the cathode of the stack is split into primary air and secondary air in the air distribution chamber 344. The primary air enters the premixer 330 along a primary air flow path which sequentially passes through the air distribution cavity 344, the small holes of the premixing air cover 342 and the through holes on the premixer 330 to be mixed with the fuel; the secondary air enters the temperature adjusting cylinder 350 along a secondary air flow path which sequentially passes through the air distribution cavity 344 and the air distribution holes, and the flue gas generated by combustion is mixed and subjected to afterburning.
Specifically, the combustor 300 provides heat for the reforming reaction during the startup phase of the natural gas reformer 100. The cathode inlet of the stack is provided with a blower, so that air flows through the cathode and is exhausted from the cathode exhaust port, and then enters the air distribution chamber 344 through the air inlet pipe 320. The primary air enters the premixing air cover 342 through the small holes of the premixing air cover 342, and then enters the premixer 330 through the perforations on the outer wall of the premixer 330 to mix with the fuel to form a mixture. The mixture is injected from the combustion nozzle 331 and ignited by the ignition device 332 to heat the reforming heat exchanger 200. The secondary air directly passes upward through the air distribution holes and enters the reforming heat exchanger 200, and the fuel is completely combusted due to the supplement of oxygen.
As the electrochemical reaction in the stack proceeds, the temperature of the stack gradually increases, the temperature of the cathode gas also gradually increases, and a portion of the unreacted oxygen is contained therein. The high temperature cathode gas enters the reforming heat exchanger 200 from the burner 300, and sensible heat carried by the cathode gas provides heat for the reforming reaction.
Thus, the process proceeds to the maintenance phase after the start-up phase is completed, and the progress of the reforming reaction is maintained by using the heat generated by the reaction of the stack and the sensible heat carried by the cathode gas, so that the input of the fuel into the combustor 300 can be reduced or even shut down.
The utility model also provides a SOFC power generation system, including galvanic pile, natural gas reforming unit 100 and controlling means. The electric pile is a solid oxide fuel cell, and a temperature sensor is arranged in the electric pile.
The afterburning gas regulating valve, the gas regulating valve and the air flow regulating valve can be electric control regulating valves. The control device is electrically connected to the temperature sensor, the ignition device 332, the post-combustion gas regulating valve, the gas regulating valve, and the air flow regulating valve, and is configured to control the opening degrees of the post-combustion gas regulating valve, the gas regulating valve, and the air flow regulating valve in accordance with the temperature of the cell stack.
Specifically, the control device is further configured to control the gas regulating valve and the air flow regulating valve to be opened in a start-up stage of the SOFC power generation system, and control the ignition device 332 to ignite to heat the reforming heat exchanger 200.
When the temperature in the reforming heat exchanger 200 reaches the reforming reaction temperature, the reforming heat exchanger 200 starts to supply the reformed gas to the stack anode, and the electrochemical reaction starts to occur in the stack.
As the reaction in the stack progresses, the temperature of the stack gradually increases, and the temperatures of the cathode gas and the anode gas also gradually increase, and the cathode gas and the anode gas can return to the reforming heat exchanger 200 for supplementary heating. At this time, the control device controls the gas regulating valve to reduce the opening along with the rise of the temperature, so as to reduce the consumption of the fuel.
As the electrochemical reaction in the stack further proceeds, the temperatures of the cathode gas and the anode gas may reach or exceed the reforming reaction temperature, at which time the control device controls the gas regulating valve to be closed. After the start-up stage of the SOFC power generation system is finished, the SOFC power generation system enters a maintenance stage, and the heat generated by the reactor reaction and the reaction heat of the cathode gas and the anode gas are used to maintain the reforming reaction in the reforming heat exchanger 200, so that fuel does not need to be input from the outside, the SOFC power generation system has the effects of saving energy and reducing consumption, and has very high economic and social benefits.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A burner, characterized in that it comprises:
a positioning cylinder;
the air chamber partition plate is positioned inside the positioning cylinder, and a heat preservation cavity is formed in the space below the air chamber partition plate in the positioning cylinder;
the temperature adjusting cylinder is connected above the positioning cylinder, an air distribution plate is arranged at the joint of the temperature adjusting cylinder and the positioning cylinder, air distribution holes are formed in the air distribution plate, the temperature adjusting cylinder is communicated with the positioning cylinder, and an ignition device is arranged in the temperature adjusting cylinder;
the premixing fan cover is connected between the air distribution plate and the air chamber partition plate, and a space surrounded by the premixing fan cover, the air distribution plate and the positioning barrel forms an air distribution cavity;
the premixer is positioned in the premixing air cover and is communicated with the premixing air cover and the temperature adjusting cylinder;
the gas inlet pipe is communicated with the premixer and is used for inputting fuel into the premixer;
and the air inlet pipeline is communicated to the air distribution cavity and simultaneously conveys air to the premixer and the temperature adjusting cylinder.
2. The burner of claim 1, wherein the retention cylinder is configured as a closed-bottom cylinder, the premixer passes through the plenum partition, the gas inlet pipe passes through the retention cylinder from the bottom of the burner and is connected to the premixer, and perforations are formed in the outer wall of the premixer.
3. The burner of claim 2, wherein the temperature control cylinder is configured as a cylinder with openings at two ends, the outer diameter of the temperature control cylinder corresponds to the inner diameter of the positioning cylinder, the temperature control cylinder is inserted into the positioning cylinder from above the positioning cylinder, a positioning opening is formed in the upper part of the premixing fan housing, and the temperature control cylinder is connected to the premixing fan housing through a positioning block.
4. Burner according to claim 1, wherein the air inlet duct is provided with an air flow regulating valve and the gas inlet duct is provided with a gas regulating valve.
5. The combustor as in claim 1, further comprising a combustion nozzle communicating to the premixer from above the premixer, the ignition device being located to the side of and spaced from the combustion nozzle,
the premixer is at least partially constructed into a diameter-variable structure with two wide ends and a narrow middle in the length direction of the positioning cylinder so as to improve the speed of mixed gas entering the combustion nozzle.
6. The burner of claim 5, further comprising a flame detection device disposed laterally of the combustion nozzle and spaced apart from the combustion nozzle and the ignition device.
7. The burner of claim 6, further comprising a flame shroud configured as a cylinder and disposed about the exterior of the flame detection device, the ignition device, and the combustion nozzle.
8. The burner as claimed in claim 2, wherein the bottom of the positioning cylinder is provided with a fire observation hole for observing the combustion condition of the flame.
9. A natural gas reformer for a SOFC power generation system including a stack, the natural gas reformer comprising:
the reforming heat exchanger is used for reforming natural gas into hydrogen-rich gas; and
the burner of any one of claims 1-8, located below and in communication with the reforming heat exchanger, for providing the reforming heat exchanger with the heated gas required to start the reforming reaction.
10. An SOFC power generation system, comprising:
a stack including a cathode exhaust and an anode inlet;
the reforming heat exchanger comprises a reforming exhaust pipe, the reforming exhaust pipe is communicated with the anode gas inlet, and the reforming heat exchanger is used for reforming natural gas into hydrogen-rich gas and providing the hydrogen-rich gas for the electric pile through the reforming exhaust pipe; and
the burner of any one of claims 1-8, located below and in communication with the reforming heat exchanger, the air inlet conduit being in communication with the cathode exhaust port, the reforming heat exchanger being fed cathode gas from the stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922392389.XU CN212132425U (en) | 2019-12-24 | 2019-12-24 | Combustor, natural gas reformer, and SOFC power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922392389.XU CN212132425U (en) | 2019-12-24 | 2019-12-24 | Combustor, natural gas reformer, and SOFC power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN212132425U true CN212132425U (en) | 2020-12-11 |
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| CN201922392389.XU Active CN212132425U (en) | 2019-12-24 | 2019-12-24 | Combustor, natural gas reformer, and SOFC power generation system |
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| Country | Link |
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| CN (1) | CN212132425U (en) |
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