CN102456902A - Device and method for decreasing concentration of tail-emitted hydrogen of fuel cell power generation system - Google Patents
Device and method for decreasing concentration of tail-emitted hydrogen of fuel cell power generation system Download PDFInfo
- Publication number
- CN102456902A CN102456902A CN2011103917907A CN201110391790A CN102456902A CN 102456902 A CN102456902 A CN 102456902A CN 2011103917907 A CN2011103917907 A CN 2011103917907A CN 201110391790 A CN201110391790 A CN 201110391790A CN 102456902 A CN102456902 A CN 102456902A
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- Prior art keywords
- hydrogen
- fuel cell
- tail
- channel
- anode
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Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 48
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 48
- 239000000446 fuel Substances 0.000 title claims abstract description 46
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000003247 decreasing effect Effects 0.000 title abstract 3
- 238000010248 power generation Methods 0.000 title abstract 2
- 239000007789 gas Substances 0.000 claims abstract description 40
- 239000008246 gaseous mixture Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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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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- Fuel Cell (AREA)
Abstract
The invention discloses a device and a method for decreasing the concentration of the tail-emitted hydrogen of a fuel cell power generation system, wherein the tail gas emitted by the cathode of a fuel cell drives a turbocharger disposed on a tail gas emission channel at the cathode of the fuel cell to suck air, and the sucked air is mixed with the tail gas after driving the turbocharger and then mixed with the gas emitted by an anode to obtain a hydrogen-air mixed gas with a low hydrogen concentration, so as to realize a safe emission. The method disclosed by the invention is simple in technique, and the device disclosed by the invention is low in cost; the energy of the tail-emitted gas of a fuel cell system is efficiently utilized to decrease the concentration of the tail-emitted hydrogen, and the safety of the fuel cell system is enhanced without decreasing the efficiency of the system.
Description
Technical field
The invention belongs to the hydrogen security fields, relate in particular to a kind of fuel cell generation tail row density of hydrogen that reduces to reach the device and method of safety dumping requirement.
Background technology
Fuel cell is a kind of cleaning, energy conversion technique efficiently, receives people's extensive concern.Yet with regard to present Proton Exchange Membrane Fuel Cells (PEMFC) technology, the utilance of hydrogen generally must be controlled in 95% the scope of being no more than, and remainder can be discharged with the form of approximate pure hydrogen.Under discharging moment chance naked light or electric spark effect, may set off an explosion, threaten human life security.Therefore, for safety, discharging or chemistry eliminated after the hydrogen tail row of fuel cell car needed to reduce to below the explosion limit through processing.
The hydrogen of fuel cell system discharging is mainly from the galvanic anode side.Along with the operation of battery, the foreign gas that the galvanic anode side contains can constantly be accumulated, to the performance generation adverse influence of battery.In order to address this problem, guarantee the utilance of hydrogen simultaneously again, anode-side generally adopts the tail end sealing at present; The mode of intermittent discharge; Its implementation is at the anode-side export pipeline row's hydrogen electromagnetically operated valve to be installed, and electromagnetically operated valve is generally closure state, to keep the reaction pressure of anode-side hydrogen.Different along with battery operation state and operating mode, electromagnetically operated valve is whenever opened once at regular intervals, opens the certain hour rear electromagnetic valve and closes, intermittently to discharge anodic gas.
The anode row hydrogen mode of above-mentioned fuel cell demonstrates a kind of state of pulse.Because the gaseous hydrogen concentration of discharging is high,, need and air mixed, to reduce hydrogen concentration for this reason.Usually can the hydrogen containing tail gas that anode is discharged be mixed with the air tail gas that negative electrode is discharged mutually.But when the anode exhaust amount is big, possibly cause the hydrogen concentration of mist to surpass explosion limit, influence hydrogen safety.
Summary of the invention
The objective of the invention is to above-mentioned hydrogen security risk, provide a kind of fuel cell generation tail row density of hydrogen that reduces cheaply to reach the device and method of safety dumping requirement.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of device that reduces fuel cell generation tail row density of hydrogen; Comprise with hydrogen being the fuel cell of fuel; Said fuel cell has cathode inlet passage, cathode exhaust gas discharge-channel, anode inlet channel and anode exhaust gas discharge-channel; Said cathode exhaust gas discharge-channel and said anode exhaust gas discharge-channel converge formation fuel cell tail gas discharge-channel, and said fuel battery negative pole exhaust emissions passage is provided with a turbocharger.
A kind of method that reduces fuel cell generation tail row density of hydrogen; Utilize the fuel battery negative pole discharge tail gas to drive to be arranged on turbocharger on the fuel battery negative pole exhaust emissions path to suck air; Institute's inhaled air with drive turbocharger after discharge tail gas mixes the back and mixes with the gas of anode exhaust, obtain the lower hydrogen sky gaseous mixture of density of hydrogen.
Select turbocharger according to the needs of handling, thereby can the density of hydrogen that the empty gaseous mixture of resulting hydrogen is handled extremely wherein be lower than directly discharging of explosion limit.
Owing to adopted technique scheme, the inventive method can reduce in the fuel cell generation tail row density of hydrogen effectively, remedy air compressor machine limited in one's ability, only depend on the dilution of cathode side tail emptying gas to be difficult to meet the requirements of defective; Device of the present invention is driven by cathode exhaust gas, the electric energy of consume fuel battery system not, energy-conserving and environment-protective.
Description of drawings
Fig. 1 reduces the structural representation of the device of fuel cell generation tail row density of hydrogen for the present invention.
Fig. 2 reduces the schematic flow sheet of the method for fuel cell generation tail row density of hydrogen for the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
Embodiment:
As shown in Figure 1; The device of reduction fuel cell generation tail row density of hydrogen of the present invention; Comprise fuel cell 100; Fuel cell has cathode inlet passage 110, cathode exhaust gas discharge-channel 120, anode inlet channel 130 and anode exhaust gas discharge-channel 140, and cathode exhaust gas discharge-channel and anode exhaust gas discharge-channel converge formation fuel cell tail gas discharge-channel 150, and fuel battery negative pole exhaust emissions passage is provided with a turbocharger 121.Arrow is depicted as gas flow direction among the figure.
Use the flow process of device reduction fuel cell generation tail row density of hydrogen shown in Figure 1 as shown in Figure 2; The turbocharger of utilizing the drive of fuel battery negative pole discharge tail gas to be arranged on the fuel battery negative pole exhaust emissions path is rotated to suck new air; The new air that is sucked mixes the back and mixes with the gas of anode exhaust with the fuel battery negative pole discharge tail gas; Obtain the lower hydrogen of density of hydrogen empty gaseous mixture, emptying then.
Be example when being operated in maximum power with certain fuel cell generation: anode-side pulse discharging, the hydrogen instantaneous delivery is 6Nm
3/ h, this moment, cathode side air discharge capacity was 93Nm
3/ h (is 2.5 by stoichiometric proportion), if the empty mixed diluting hydrogen of direct hydrogen, then density of hydrogen is:
Far above the hydrogen explosion limit 4%.But be to use device of the present invention, the turbocharger of utilizing cathode exhaust gas to drive can suck about 85Nm
3The new air of/h, new air is 93+85=178Nm with getting air capacity after cathode exhaust gas mixes
3/ h, after anode exhaust gas mixed, then its density of hydrogen was:
Be lower than the hydrogen explosion limit 4%, thereby realize safety dumping.
The foregoing description is interpreted as only being used to the present invention is described and is not used in restriction protection scope of the present invention.After the content of having read the present invention's record, those skilled in the art can do various changes or modification to the present invention, and these equivalences change and modify and fall into claim of the present invention institute restricted portion equally.
Claims (2)
1. one kind is reduced the device that the fuel cell generation tail is arranged density of hydrogen; Comprise with hydrogen being the fuel cell of fuel; Said fuel cell has cathode inlet passage, cathode exhaust gas discharge-channel, anode inlet channel and anode exhaust gas discharge-channel; Said cathode exhaust gas discharge-channel and said anode exhaust gas discharge-channel converge formation fuel cell tail gas discharge-channel, it is characterized in that said fuel battery negative pole exhaust emissions passage is provided with a turbocharger.
2. one kind is reduced the method that the fuel cell generation tail is arranged density of hydrogen; It is characterized in that; Utilize the fuel battery negative pole discharge tail gas to drive to be arranged on turbocharger on the fuel battery negative pole exhaust emissions path to suck air; Institute's inhaled air with drive turbocharger after tail gas mixes the back and mixes with the gas of anode exhaust, obtain the lower hydrogen sky gaseous mixture of density of hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103917907A CN102456902A (en) | 2011-12-01 | 2011-12-01 | Device and method for decreasing concentration of tail-emitted hydrogen of fuel cell power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103917907A CN102456902A (en) | 2011-12-01 | 2011-12-01 | Device and method for decreasing concentration of tail-emitted hydrogen of fuel cell power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102456902A true CN102456902A (en) | 2012-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103917907A Pending CN102456902A (en) | 2011-12-01 | 2011-12-01 | Device and method for decreasing concentration of tail-emitted hydrogen of fuel cell power generation system |
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| Country | Link |
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| CN (1) | CN102456902A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461778A (en) * | 2017-02-20 | 2018-08-28 | 武汉众宇动力系统科技有限公司 | Fuel cell for unmanned plane |
| CN111969228A (en) * | 2020-08-19 | 2020-11-20 | 中国第一汽车股份有限公司 | Fuel cell device system and control method |
| CN112825365B (en) * | 2019-11-20 | 2024-04-19 | 现代自动车株式会社 | Exhaust hydrogen concentration control apparatus and method for fuel cell system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101292384A (en) * | 2005-10-21 | 2008-10-22 | 丰田自动车株式会社 | Fuel cell system, device for estimating anode gas production, and method for estimating anode gas production |
| US20080311441A1 (en) * | 2007-06-14 | 2008-12-18 | Hochgraf Clark G | Fuel cell system using cathode exhaust for anode recirculation |
| CN101431162A (en) * | 2007-10-18 | 2009-05-13 | 通用汽车环球科技运作公司 | Assisted stack anode purge at start-up of fuel cell system |
| WO2011015282A1 (en) * | 2009-08-05 | 2011-02-10 | Daimler Ag | Method for operation of a fuel cell system in a vehicle |
| CN202549990U (en) * | 2011-12-01 | 2012-11-21 | 上海新源动力有限公司 | Device for lowering tail hydrogen concentration of fuel-cell power generation system |
-
2011
- 2011-12-01 CN CN2011103917907A patent/CN102456902A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101292384A (en) * | 2005-10-21 | 2008-10-22 | 丰田自动车株式会社 | Fuel cell system, device for estimating anode gas production, and method for estimating anode gas production |
| US20080311441A1 (en) * | 2007-06-14 | 2008-12-18 | Hochgraf Clark G | Fuel cell system using cathode exhaust for anode recirculation |
| CN101431162A (en) * | 2007-10-18 | 2009-05-13 | 通用汽车环球科技运作公司 | Assisted stack anode purge at start-up of fuel cell system |
| WO2011015282A1 (en) * | 2009-08-05 | 2011-02-10 | Daimler Ag | Method for operation of a fuel cell system in a vehicle |
| CN202549990U (en) * | 2011-12-01 | 2012-11-21 | 上海新源动力有限公司 | Device for lowering tail hydrogen concentration of fuel-cell power generation system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461778A (en) * | 2017-02-20 | 2018-08-28 | 武汉众宇动力系统科技有限公司 | Fuel cell for unmanned plane |
| CN108461778B (en) * | 2017-02-20 | 2025-01-14 | 武汉众宇动力系统科技有限公司 | Fuel cells for drones |
| CN112825365B (en) * | 2019-11-20 | 2024-04-19 | 现代自动车株式会社 | Exhaust hydrogen concentration control apparatus and method for fuel cell system |
| CN111969228A (en) * | 2020-08-19 | 2020-11-20 | 中国第一汽车股份有限公司 | Fuel cell device system and control method |
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Application publication date: 20120516 |