CN202363541U - Coupled reforming reactor used for SOFC (Solid Oxide Fuel Cell) system and power generation system - Google Patents
Coupled reforming reactor used for SOFC (Solid Oxide Fuel Cell) system and power generation system Download PDFInfo
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- CN202363541U CN202363541U CN2011204413081U CN201120441308U CN202363541U CN 202363541 U CN202363541 U CN 202363541U CN 2011204413081 U CN2011204413081 U CN 2011204413081U CN 201120441308 U CN201120441308 U CN 201120441308U CN 202363541 U CN202363541 U CN 202363541U
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- reforming reactor
- sofc
- mixing apparatus
- coupled mode
- gas inlet
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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
Abstract
The utility model discloses a coupled reforming reactor used for an SOFC (Solid Oxide Fuel Cell) system. The coupled reforming reactor comprises an outer shell, an inner shell, a reforming cavity, a gas premixing device and a fire-insulation device, wherein the outer shell is provided with a gas inlet and a tail gas exhaust hole, as well as a reforming gas inlet pipe and a reforming exhaust pipe which are communicated in the outer shell; the inner shell is arranged in the outer shell, and is internally provided with a combustion chamber which is internally filled with a porous medium body; the reforming cavity is arranged between the outer shell and the inner shell, and is internally filled with a metal honeycomb or foam; the gas premixing device is communicated with the combustion chamber through the gas inlet; and the fire-insulation device is arranged between the combustion chamber and the gas premixing device. According to the coupled reforming reactor used for the SOFC system provided by the utility model, combustion reaction and reforming reaction are coupled, thus the integrity and heat exchange efficiency of the whole system are greatly improved. The utility model also discloses a power generation system applying the coupled reforming reactor.
Description
Technical field
The utility model relates to heat treatment technics and catalytic field, and particularly a kind of SOFC system is with coupled mode reforming reactor and electricity generation system.
Background technology
The SOFC electricity generation system is a kind of novel power generation device, belongs to third generation fuel cell, is all solid state Chemically generation device that a kind of chemical energy that under middle high temperature, directly will be stored in fuel and the oxidant efficiently, environmental friendliness changes into electric energy.
The SOFC electricity generation system is as being transformed into the energy conversion device of electric energy and heat energy with fuel from chemical energy, and advantage such as its high efficiency, pollution-free, structure of whole solid state has made one of its significant energy crossover tool that becomes potentialization.The SOFC electricity generation system is all having great advantage aspect fuel efficiency, discharging, maintenance and the noise pollution.
Typical SOFC co-generation unit comprises fuel processing system, SOFC body electricity generation system, straight alternating current conversion system, residual neat recovering system, and devices needed comprises compressor, steam generator, reformer, heat exchanger and burner etc.
Gaseous fuel or liquid fuel are before getting into battery pile generation electrochemical reaction; The general synthesis gas that all need be converted into H2 and CO; With the natural gas is the fuel cell of raw material; Usually select for use steam reforming mode (CH4+H2O → CO+3H2) produce hydrogen in real time, this reaction is a strong endothermic reaction (Δ H298K=+226kJ/mol), its reaction required heat then come from burner.The anode exhaust gas that burner comes out from the SOFC pile through burning comes for whole system provides heat, and for the SOFC system, reforming reaction is the main consumer of an energy.
Occur in inside battery or outside according to reforming reaction, reform in can being divided into and reform with outer.Interior reformation causes electrode temperature distributing disproportionation and have carbon distribution reaction to take place everywhere easily, thereby causes power of battery density to descend significantly.Comparatively ripe through in the outer reformation technical development of the additional special reforming reactor of outside batteries is the hydrogen manufacturing mode of the main flow of existing in the world fuel cells applications system.
Present reforming system mainly is made up of the reformer and the exhaust combustion device of discrete, and the high-temperature flue gas that is produced through the pile exhaust combustion washes away the wall of reformer and accomplishes heat exchange, and then reforming reaction is carried out heat supply.It is lower that the bottleneck of this heat exchange mode is that high-temperature flue gas washes away the heat exchange coefficient of reformer wall; For reaching the heat exchange effect of expection; Just bigger heat exchange area must be arranged; Thereby cause the reforming system of this discrete bulky, level of integrated system is low, and other parts produce constructive interference in easy and the system.
If can combustion reaction and reforming reaction be put together, the heat exchange mode that changes burner and reformer comes the enhanced heat exchange effect, and expection can improve the integrated level and the heat exchange efficiency of whole system greatly.
Therefore, how to improve the SOFC electricity generation system, combustion reaction and reforming reaction are coupled, thereby improve the integrated level and the heat exchange efficiency of whole system greatly, become the important technological problems that those skilled in the art need to be resolved hurrily.
The utility model content
In view of this, the utility model provides a kind of SOFC system to use the coupled mode reforming reactor, combustion reaction and reforming reaction is coupled, thereby has improved the integrated level and the heat exchange efficiency of whole system widely.
For realizing above-mentioned purpose, the utility model provides following technical scheme:
A kind of SOFC system uses the coupled mode reforming reactor, comprising:
Shell body offers gas inlet, tail gas exhaust outlet on the said shell body, be communicated in said shell body inner reformation air inlet pipe and reformation escape pipe in addition;
In be located at said shell body and the inner inner housing that contains combuster, and filling porous dielectric in the said combustion chamber;
Be arranged at the reformation chamber between said shell body and the said inner housing, and fill metal beehive or foam in the said reformation chamber;
Be communicated in the combustion gas pre-mixing apparatus of said combustion chamber through said gas inlet;
Be arranged at the fire insulation device between said combustion chamber and the said combustion gas pre-mixing apparatus.
Preferably, said porous media body is pressed the direction of motion of air mixture, the transition from big to small of its aperture, and the edge sealing that carries out all around of said porous media body is handled.
Preferably, said porous media has the structure that is made up of SiC, ZrO2 or Al2O3 foamed ceramics, and shown in the space of inwall and said porous media body (13) periphery of inner housing fill SiC or Al2O3 chylema material.
Preferably, said metal beehive or foam are integral type, and the surface is provided with catalyst coat.
Preferably; Said shell body is specially cylindrical; Said gas inlet and said tail gas exhaust outlet are opened in respectively on two faces of cylinder; Said reformation air inlet pipe and said reformation escape pipe are communicated on the periphery, and said inner housing also is cylindrical, and said shell body all axially vertically is provided with said inner housing and is highly identical.
Preferably, said combustion gas pre-mixing apparatus specifically comprises columniform one-level pre-mixing apparatus and the conical secondary pre-mixing apparatus that is interconnected, and is connected with air input pipe and gas inlet pipe on the said one-level pre-mixing apparatus.
Preferably, said gas inlet pipe stretches into an end closed-end of said one-level pre-mixing apparatus, and the said gas inlet pipe pipe side wall that is positioned at said one-level pre-mixing apparatus is provided with the perforate of some connection one-level pre-mixing apparatus and gas inlet pipe tube chamber.
Preferably, said fire insulation device is specially the straight-bore ceramic plate, and has aperture and the porosity of confirming according to the tempering limit theory.
Preferably, the mode through flange and trip between described shell body and the combustion gas pre-mixing apparatus is connected, and installs heat insulating mattress additional at flange and trip junction.
A kind of electricity generation system of SOFC system with the coupling reforming reactor of having used has above-mentioned SOFC system and uses the coupled mode reforming reactor.
Can find out that from above-mentioned technical scheme the SOFC system that the utility model provides uses the coupled mode reforming reactor, through the combustion chamber being arranged on the inside in reformation chamber; Make both be coupled; And distinguish filling porous dielectric and metal beehive or foam therein, air mixture is burnt inner completion of porous media body, for reforming reaction provides heat; Utilize the overheavy firing and the enhanced heat exchange characteristic of porous media body; Make that burning and reforming process are all strengthened, and simplified the structure of traditional discrete SOFC system, thereby improved level of integrated system and heat exchange efficiency widely.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The SOFC system that Fig. 1 provides for present embodiment is with the internal structure sketch map of coupled mode reforming reactor;
The SOFC system that Fig. 2 provides for present embodiment is with the external structure sketch map of coupled mode reforming reactor;
The SOFC system that Fig. 3 provides for present embodiment is with the structural representation of gas inlet pipe in the coupled mode reforming reactor;
The SOFC system that Fig. 4 provides for present embodiment is with the structural representation of fire insulation device in the coupled mode reforming reactor;
Embodiment
The utility model discloses a kind of SOFC system and use the coupled mode reforming reactor, combustion reaction and reforming reaction are coupled, thereby improved the integrated level and the heat exchange efficiency of whole system widely.
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, the SOFC system that the utility model embodiment provides uses the coupled mode reforming reactor, comprising:
Shell body 9-1; Offer gas inlet, tail gas exhaust outlet on the shell body 9-1; Be used for supplying air mixture to get into and the discharge of burning back tail gas; Be communicated in shell body 9-1 inner reformation air inlet pipe 7 and reformation escape pipe 10 in addition, methane and steam get into reformation chamber B through reformation air inlet pipe 7, and hydrogen that reforming reaction generates and carbon monoxide are collected by reformation escape pipe 10;
In be located at shell body 9-1 and the inner inner housing 9-2 that contains combuster C; Inner housing 9-2 can adopt stainless steel material; Air mixture is burnt in the C of combustion chamber; And filling porous dielectric 13 in the C of combustion chamber utilizes the characteristic of its porous to come burning and the overheavy firing chamber C of enhancing mixed combustion gas, the heat exchange between the B of reformation chamber;
Be arranged at the reformation chamber B between shell body 9-1 and the inner housing 9-2, reforming reaction is carried out therein, and fills metal beehive or foam 8 in the B of reformation chamber, and overheavy firing chamber C is to the heat transfer of reformation chamber B, and the while is as the carrier of catalyst;
Be communicated in the combustion gas pre-mixing apparatus A of combustion chamber C through gas inlet, be used for the combustion gas that mixes being provided for combustion chamber C;
Be arranged at the fire insulation device 11 between combustion chamber C and the combustion gas pre-mixing apparatus, to prevent the potential safety hazard that tempering brings.
Compare with structure of the prior art; The SOFC system that the utility model embodiment provides is with the greatest improvement of coupled mode reforming reactor, through combustion chamber C being arranged on the inside of reformation chamber B, makes both be coupled; And distinguish filling porous dielectric 13 and metal beehive or foam 8 therein; Air mixture is burnt porous media body 13 inner completion, for reforming reaction provides heat, utilizes the overheavy firing and the enhanced heat exchange characteristic of porous media body 13; Make that burning and reforming process are all strengthened; And simplified the structure of traditional discrete SOFC system, reduce the volume of whole device, thereby improved level of integrated system and heat exchange efficiency widely.
The multi-hole medium combustion technology is that a kind of flameholding with premixed gas fuel is not only high temperature resistant but also have in the porous media hole of good heat conductive and radiance; Utilize the heat storage performance of porous media that calory burning is stored in porous media inside; Be used for the premixed gas that preheating do not fire, make the premixed combustion flame temperature mix degree greater than adiabatic flame.Porous media body 13 is by the direction of motion of air mixture; Shown in Fig. 1 arrow, the transition from big to small of its aperture, in the present embodiment; Be specially by 60PPI and carry out the transition to 10PPI gradually; (PPI is the linear module of porous foam ceramic structure, promptly refers to the hole count of porous foam ceramic per inch length) because different along the aperture of airflow direction porous media body 13, and the gas flow velocity of portion within it is also different along with the variation in aperture; When the gas flow rate in the somewhere porous media body 13 equated with the flame back-flow velocity, flame just was stabilized in this place's dielectric; And carry out edge sealing around the porous media body 13 and handle, this is in order to make mist fully at porous media body 13 inner flow-disturbings, to be controlled at dielectric inside to flame.
In order to improve the resistance to elevated temperatures of porous media body 13; Porous media 13 has the structure that is made up of SiC, ZrO2 or Al2O3 foamed ceramics; Improved the resistance to elevated temperatures of porous media body 13; And fill SiC or Al2O3 chylema material 12 at the inwall of inner housing 9-2 and the space of porous media body 13 peripheries,, improve the efficient of reforming reaction with the inwall of reinforcement inner housing 9-2 and the heat exchange effect of porous media body 13.
The SOFC system that the utility model embodiment provides uses the coupled mode reforming reactor; The metal beehive or the foam 8 of filling in the B of reformation chamber are integral type; Has good thermal conductivity; Be fixed in the inwall of reformation chamber B with the mode of soldering, and the surface is provided with catalyst coat, promoted the carrying out of reforming reaction.Certainly, if the metal beehive of non-integral type or foam 8 also can serve the same role, principle is identical, repeats no more.
The shape of reactor can have a variety of; Such as circular, square or other shapes, shell body 9-1 is specially cylindrically in the present embodiment, and gas inlet and tail gas exhaust outlet are opened in respectively on two faces of cylinder; Reformation air inlet pipe 7 is communicated on the periphery with reformation escape pipe 10; And reformation air inlet pipe 7 is lower than reformation escape pipe 10, and inner housing 9-2 also is cylindrical, and both all axially vertically are provided with and are highly equal.So, just formed annular reformation chamber B and columniform combustion chamber C, both have increased binding face through such form fit, have bigger heat exchange area, have further improved heat exchange efficiency.Here, gas inlet is arranged on down the face of cylinder, and the tail gas exhaust outlet is arranged on the face of cylinder, and then combustion gas pre-mixing apparatus A is communicated with the bottom of the C in the combustion chamber.
Mention in the technique scheme; Combustion gas pre-mixing apparatus A is pre-mixed uniform combustion gas for combustion chamber C provides; It specifically comprises the columniform one-level pre-mixing apparatus 3 and conical secondary pre-mixing apparatus 4 that is interconnected; Wherein comprise one-level premix chamber and secondary premix chamber respectively, be connected with air input pipe 2 and gas inlet pipe 1 on the one-level pre-mixing apparatus 3, secondary pre-mixing apparatus 4 is communicated in combustion chamber C.Combustion gas enters into columniform one-level premix chamber through gas inlet pipe 1, can tentatively mix with the air of input in the air input pipe 2; Carry out the mist behind the preliminary premix, get into subsequently and accomplish further diffusion in the conical secondary premix chamber and mix.
Further; As shown in Figure 3; Gas inlet pipe 1 stretches into an end closed-end of one-level pre-mixing apparatus 3; And the pipe side wall that gas inlet pipe 1 is positioned at one-level pre-mixing apparatus 3 is provided with the perforate 1-1 of some connection one-level pre-mixing apparatus 3 and gas inlet pipe 1 tube chamber, makes combustion gas spray through the perforate 1-1 on gas inlet pipe 1 tube chamber and enter into one-level premix chamber to have higher speed; Force with air input pipe 2 in the air imported tentatively mix, increased combustion gas and Air mixing speed widely.
Please refer to Fig. 4, the SOFC system that Fig. 4 provides for the utility model embodiment is with the structural representation of fire insulation device in the coupled mode reforming reactor.Fire insulation device 11 is specially the straight-bore ceramic plate, and has aperture and the porosity of confirming according to the tempering limit theory.Concrete here, its diameter is identical with the diameter of porous media body, and thickness is not less than 10mm.Be uniformly distributed with several apertures on the straight hole plate; The aperture is not more than 1mm, and according to the minimum flow velocity of premixed gas its porosity is set, and makes air communication cross the back-flow velocity that speed behind the straight hole plate is higher than flame all the time; Thereby prevent the generation of tempering, play effect simultaneously the premixed gas rectification.
The SOFC system that the utility model embodiment provides uses the coupled mode reforming reactor, because shell body 9-1 and combustion gas pre-mixing apparatus A are separated structure, both connect through the mode of flange and trip 5; And install heat insulating mattress 6 additional at flange and trip 5 junctions; The heat that as far as possible reduces combustion chamber C and reformation chamber B conducts to the premix chamber of combustion gas pre-mixing apparatus A through flange, makes that the premix cavity temperature is too high, in the premix chamber, spontaneous combustion takes place to avoid gas; Simultaneously; Thermal insulation is lined with certain elasticity, and through regulating the nut on the trip 5, the air-tightness that flange connects between chamber and the premix chamber can guarantee to reform during installation.
In order further to optimize technique scheme, the outer wall top junction 9-3 of reformation chamber B can connect with the thin slice that the buffering surplus is arranged, arc sheet or other forms, to reduce thermal stress, avoids producing the crack.
On the basis of technique scheme, the utility model also provides a kind of SOFC electricity generation system, and this SOFC electricity generation system has been used the SOFC system in the technique scheme and used the coupled mode reforming reactor, and its beneficial effect repeats no more here.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a SOFC system uses the coupled mode reforming reactor, it is characterized in that, comprising:
Shell body (9-1) offers gas inlet, tail gas exhaust outlet on the said shell body (9-1), be communicated in said shell body (9-1) inner reformation air inlet pipe (7) and reformation escape pipe (10) in addition;
In be located at the inner housing (9-2) that said shell body (9-1) and inside contain combuster (C), and filling porous dielectric (13) in said combustion chamber (C);
Be arranged at the reformation chamber (B) between said shell body (9-1) and the said inner housing (9-2), and fill metal beehive or foam (8) in the said reformation chamber (B);
Be communicated in the combustion gas pre-mixing apparatus (A) of said combustion chamber (C) through said gas inlet;
Be arranged at the fire insulation device (11) between said combustion chamber (C) and the said combustion gas pre-mixing apparatus (A).
2. SOFC according to claim 1 system uses the coupled mode reforming reactor, it is characterized in that, said porous media body (13) is by the direction of motion of air mixture, the transition from big to small of its aperture, and said porous media body (13) around carry out edge sealing and handle.
3. SOFC according to claim 2 system uses the coupled mode reforming reactor; It is characterized in that; Said porous media (13) has the structure that is made up of SiC, ZrO2 or Al2O3 foamed ceramics, and shown in the space of inwall and said porous media body (13) periphery of inner housing (9-2) fill SiC or Al2O3 chylema material (12).
4. SOFC according to claim 1 system uses the coupled mode reforming reactor, it is characterized in that said metal beehive or foam (8) are integral type, and the surface is provided with catalyst coat.
5. SOFC according to claim 1 system uses the coupled mode reforming reactor; It is characterized in that; Said shell body (9-1) is specially cylindrical, and said gas inlet and said tail gas exhaust outlet are opened in respectively on two faces of cylinder, and said reformation air inlet pipe (7) and said reformation escape pipe (10) are communicated on the periphery; Said inner housing (9-2) also is cylindrical, and said shell body (9-1) all axially vertically is provided with said inner housing (9-2) and is highly identical.
6. SOFC according to claim 1 system uses the coupled mode reforming reactor; It is characterized in that; Said combustion gas pre-mixing apparatus (A) specifically comprises columniform one-level pre-mixing apparatus (3) and the conical secondary pre-mixing apparatus (4) that is interconnected, and is connected with air input pipe (2) and gas inlet pipe (1) on the said one-level pre-mixing apparatus (3).
7. SOFC according to claim 6 system uses the coupled mode reforming reactor; It is characterized in that; Said gas inlet pipe (1) stretches into an end closed-end of said one-level pre-mixing apparatus (3), and said gas inlet pipe (1) pipe side wall that is positioned at said one-level pre-mixing apparatus (3) is provided with the perforate (1-1) of some connection one-level pre-mixing apparatus (3) and gas inlet pipe (1) tube chamber.
8. SOFC according to claim 1 system uses the coupled mode reforming reactor, it is characterized in that said fire insulation device (11) is specially the straight-bore ceramic plate, and has aperture and the porosity of confirming according to the tempering limit theory.
9. SOFC according to claim 1 system uses the coupled mode reforming reactor; It is characterized in that; Mode through flange and trip (5) between described shell body (9-1) and the combustion gas pre-mixing apparatus (A) is connected, and installs heat insulating mattress (6) additional at flange and trip (5) junction.
10. an electricity generation system of having used the SOFC system with the coupling reforming reactor is characterized in that, has any described SOFC system of claim 1-9 and uses the coupled mode reforming reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204413081U CN202363541U (en) | 2011-11-09 | 2011-11-09 | Coupled reforming reactor used for SOFC (Solid Oxide Fuel Cell) system and power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204413081U CN202363541U (en) | 2011-11-09 | 2011-11-09 | Coupled reforming reactor used for SOFC (Solid Oxide Fuel Cell) system and power generation system |
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| CN202363541U true CN202363541U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204413081U Withdrawn - After Issue CN202363541U (en) | 2011-11-09 | 2011-11-09 | Coupled reforming reactor used for SOFC (Solid Oxide Fuel Cell) system and power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107348A (en) * | 2011-11-09 | 2013-05-15 | 中国科学院宁波材料技术与工程研究所 | Coupled reforming reactor for SOFC system and power generation system |
-
2011
- 2011-11-09 CN CN2011204413081U patent/CN202363541U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107348A (en) * | 2011-11-09 | 2013-05-15 | 中国科学院宁波材料技术与工程研究所 | Coupled reforming reactor for SOFC system and power generation system |
| CN103107348B (en) * | 2011-11-09 | 2015-12-16 | 中国科学院宁波材料技术与工程研究所 | A kind of SOFC system coupled mode reforming reactor and electricity generation system |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120801 Effective date of abandoning: 20151216 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120801 Effective date of abandoning: 20151216 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |