CN100511802C - Power system based on methane cracking and fuel battery - Google Patents
Power system based on methane cracking and fuel battery Download PDFInfo
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- CN100511802C CN100511802C CNB2006100154950A CN200610015495A CN100511802C CN 100511802 C CN100511802 C CN 100511802C CN B2006100154950 A CNB2006100154950 A CN B2006100154950A CN 200610015495 A CN200610015495 A CN 200610015495A CN 100511802 C CN100511802 C CN 100511802C
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- preheater
- carbon
- methane
- fuel battery
- membrane fuel
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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 invention is concerned with an energy sources system based on methane pyrolysis and fuel cells, relates to methane catalyzing and pyrolysis device, carbon cells and proton film cells. To keep steady flow operation, carry the methane catalyzing and pyrolysis inside the flowing bed with activator Ni at 500-750DEG C and get70%-80% transform efficiency. Use PEMFC to consume the hydrogen produced from methane pyrolysis, and the electricity efficiency is 0.4-0.65 at 25-100DEG C with well-rounded technology and great application. The carbon fuel cell's electrolyte is molten carbonate and it is used to consume carbon produced from methane pyrolysis, and the efficiency is 0.82 at 550DEG C. This technology owns high integration degree to separate hydrogen and carbon. The carbon cells greatly use all shapes of carbon resource with easy operation.
Description
Technical field
The present invention relates to a kind of energy resource system, particularly a kind of energy resource system based on methane cracking and fuel cell.
Background technology
The utilization of industrial methane mainly realizes by steam reforming reaction.The partial oxidation and the autothermal reforming reaction of methane also come into one's own recently day by day.But these course of reaction more complicated and be attended by the generation of CO must be oxidized to CO to CO through steam reformation in the subsequent step
2
Summary of the invention
In order to solve the problems of the technologies described above, the present invention is a raw material with the natural gas, and in conjunction with fuel cell technology, obtaining an output electrical efficiency is 69% high efficient energy sources process route.
The purpose of this invention is to provide a kind of energy resource system.
Energy resource system of the present invention comprises methane catalytic decomposition device and carbon consuming cell and proton membrane fuel battery.
Described methane catalytic decomposition device is a fluidized-bed reactor, adopts the Ni catalyst, and reaction temperature is 500-750 ℃.
It is electrolyte that described carbon consuming cell preferably adopts fused carbonate.
Energy resource system of the present invention uses different preheaters to the reaction raw materials preheating respectively, and uses Rankine cycle to concentrate the waste heat of recovery system.
Energy resource system of the present invention, its fluidized-bed reactor arrival end be in series with successively preheater 1 and preheater 1 '; The carbon fiber port of export of fluidized-bed reactor links to each other with carbon consuming cell, and the hydrogen outlet end is in series with waste heat boiler and proton membrane fuel battery in proper order; Carbon consuming cell is connected with preheater 2 in addition, and the port of export of carbon consuming cell links to each other with waste heat boiler; Proton membrane fuel battery is connected with preheater 3, and the port of export of proton membrane fuel battery links to each other with the pipeline of preheater 1 with preheater 1 ' centre; Waste heat boiler and turbine, compressor and pump are in turn connected into loop, form Rankine cycle.
Preheater 1 ' institute calorific requirement of energy resource system is provided by the outlet hot gas of proton membrane fuel battery, 1 calorific requirement of preheater is provided by fluid bed outlet high-temperature gas, preheater 2 required heats are provided by carbon consuming cell outlet high temperature carbon dioxide gas, 3 calorific requirements of preheater are provided by the residual heat of reaction of proton membrane fuel battery, the reaction heat that fluid bed needs is supplied by the waste heat of carbon consuming cell, and other unnecessary heat utilizes by waste heat boiler.
This energy resource system comprises three key components (seeing accompanying drawing): at first, in order to carry out the current stabilization operation, carry out methane catalytic decomposition in fluid bed, use the Ni catalyst, can reach 70%-80% at 500-750 ℃ of its conversion ratio.Next, operation technique is ripe relatively and have the PEMFC of big application prospect to consume the hydrogen that methane cracking produces.The electrical efficiency of PEMFC 25-100 ℃ can be up to 0.4-0.65, last, be that electrolytical carbon consuming cell is used to consume the carbon that methane cracking produces with fused carbonate, its efficient under 550 ℃ operating condition can reach 0.82.
In addition, use preheater 1,2 respectively, 3,4 pairs of reaction mass preheatings, and use Rankine cycle (comprising waste heat boiler, turbine, compressor and pump) to concentrate the waste heat of recovery system.
Invention main points of the present invention:
(1) integrated fluidized-bed reactor, proton membrane fuel battery and carbon consuming cell, system thermal efficiency are higher than traditional methane vapor reforming mode up to 69%.
(2) this system can be at steady state operation under the self-heat condition except that providing when bringing into operation the heat.
Adopt fluid catalytic cracking methane, product hydrogen and carbon nano-fiber are respectively as proton membrane fuel battery and carbon consuming cell raw material, and the output electric energy obtains domestic water simultaneously.
Along with the in short supply day by day and global carbon dioxide greenhouse effect of petroleum resources, the efficiency cry benefit that improves energy processes is high.Industrial methane mainly utilizes by steam reforming reaction.But, steam reformation process more complicated and be attended by the generation of CO.The present invention has made up an energy resource system efficiently from methane cracking and carbon consuming cell, and the heat efficiency is higher than methane steam reformation mode traditional on the market far away.And, this technical process integrated level height, hydrogen is easy to separate with carbon, and carbon consuming cell can utilize the carbon resource of various forms efficiently, and process is simple.This energy resource system can be generalized to the utilization of other hydrocarbon fuel equally, as the alkane except that methane, and hydro carbons such as alkene or alkynes, they can obtain the raw material of methane as this system by cracking.Therefore must have boundless market prospects.
The raw material that the present invention consumes is a natural gas.The clean level of natural gas is little to the influence of the use of methane cracking and fuel cell, but must guarantee can not have air plankton in the methane catalytic decomposition, otherwise the CO that is mixed with in the gas can cause the poisoning of proton membrane fuel battery.
Description of drawings
Fig. 1 is an energy resource system process chart of the present invention
Embodiment
The methane preheating divides two sections to carry out, first section with fresh methane from normal temperature (25 ℃) normal pressures (latm) down through preheater 1 ' be heated to 100 ℃, second section will be heated to 600 ℃ through preheater 1 from 100 ℃ from the methane of preheater 1 ' come out.Enter the fluid catalystic cracking reactor, become Nano carbon fibers peacekeeping hydrogen at 600 ℃ of following catalytic pyrolysis.High Purity Hydrogen reclaims heat through waste heat boiler, cool to 100 ℃ and feed proton membrane fuel battery, simultaneous oxidation agent air feeds proton membrane fuel battery after being heated to 100 ℃ through preheater 3, generates 100 ℃ water with hydrogen reaction, can be used as domestic water and sells.High-temperature nano carbon fiber (600 ℃) directly feeds carbon consuming cell, simultaneously oxygen and nitrogen are heated to 650 ℃ from normal temperature by preheater 2, feed the reaction of carbon consuming cell and carbon nano-fiber then, the product high temperature carbon dioxide that obtains also reclaims heat centralized collection again by waste heat boiler, sells as product.The conversion ratio of fluid bed is 70% in the present embodiment, after the catalytic methane catalytic pyrolysis is finished, remains the methane of 0.429 unit/time, reclaims through feeding second preheater again after the circulation in system, and the methane that comes out with first section preheater uses together.(all gas all is at atmospheric pressure state in the system).
Claims (2)
1. the energy resource system based on methane cracking and fuel cell is characterized in that comprising methane catalytic decomposition device and carbon consuming cell and proton membrane fuel battery; Described methane catalytic decomposition device is a fluidized-bed reactor, the fluidized-bed reactor arrival end be in series with successively preheater 1 and preheater 1 '; The carbon fiber port of export of fluidized-bed reactor links to each other with carbon consuming cell, and the hydrogen outlet end is in series with waste heat boiler and proton membrane fuel battery in proper order; Carbon consuming cell is connected with preheater 2 in addition, and the port of export of carbon consuming cell links to each other with waste heat boiler; Proton membrane fuel battery is connected with preheater 3, and the proton membrane fuel battery port of export links to each other with the pipeline of preheater 1 with preheater 1 ' centre; Waste heat boiler and turbine, compressor and pump are in turn connected into loop, form Rankine cycle.
2. energy resource system as claimed in claim 1, it is characterized in that preheater 1 ' institute calorific requirement is provided by the outlet hot gas of proton membrane fuel battery, 1 calorific requirement of preheater is provided by fluid bed outlet high-temperature gas, preheater 2 required heats are provided by carbon consuming cell outlet high temperature carbon dioxide gas, 3 calorific requirements of preheater are provided by the residual heat of reaction of proton membrane fuel battery, the reaction heat that fluid bed needs is supplied by the waste heat of carbon consuming cell, and other unnecessary heat utilizes by waste heat boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100154950A CN100511802C (en) | 2006-08-30 | 2006-08-30 | Power system based on methane cracking and fuel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100154950A CN100511802C (en) | 2006-08-30 | 2006-08-30 | Power system based on methane cracking and fuel battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1941482A CN1941482A (en) | 2007-04-04 |
| CN100511802C true CN100511802C (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100154950A Expired - Fee Related CN100511802C (en) | 2006-08-30 | 2006-08-30 | Power system based on methane cracking and fuel battery |
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| CN (1) | CN100511802C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461516C (en) * | 2007-05-10 | 2009-02-11 | 上海交通大学 | Natural gas melting carbonate fuel cell generation system |
| CA3115360C (en) * | 2018-12-14 | 2023-04-04 | Ekona Power Inc. | Method for producing hydrogen and generating electrical power |
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2006
- 2006-08-30 CN CNB2006100154950A patent/CN100511802C/en not_active Expired - Fee Related
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| CN1941482A (en) | 2007-04-04 |
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