CN101531336B - Small-sized high efficiency self-heating natural gas hydrogen-preparing device - Google Patents
Small-sized high efficiency self-heating natural gas hydrogen-preparing device Download PDFInfo
- Publication number
- CN101531336B CN101531336B CN2009101165655A CN200910116565A CN101531336B CN 101531336 B CN101531336 B CN 101531336B CN 2009101165655 A CN2009101165655 A CN 2009101165655A CN 200910116565 A CN200910116565 A CN 200910116565A CN 101531336 B CN101531336 B CN 101531336B
- Authority
- CN
- China
- Prior art keywords
- chamber
- natural gas
- interchanger
- reaction
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Hydrogen, Water And Hydrids (AREA)
Abstract
Small-sized high efficiency self-heating natural gas hydrogen-preparing device is equipped with a roll-up type heat exchanger, and is characterized in that in a central post cavity of the roll-up type heat exchanger, air-flow inlet communicated with a air intake channel is arranged at bottom of a side wall of the central post cavity, smoke outlet communicated with a smoke evacuation channel is arranged at top of the side wall of the central post cavity; the central post cavity is divided into an upper reaction react and a lower premixing cavity by a netted grating, the air-flow inlet is in the premixing cavity, the smoke outlet is in the react cavity; a steam atomizing nozzle is arranged in the premixing cavity; and porous medium arranged in the reaction cavity has gradually large voidage from bottom to top. The invention makes temperature field in hydrogen-preparing reaction region more uniformly, and greatly increases gasification hydrogen-preparing efficiency; energy of reaction resultant can be in maximum use, and energy utilization ratio of integrated device reaches maximization.
Description
Technical field
The invention belongs to hydrogen producer, particularly a kind of small-sized self-heating natural gas hydrogen-preparing device.
Background technology
Hydrogen Energy is considered to one of following most promising energy as a kind of new secondary energy of cleaning.Yet there is not pure hydrogen in occurring in nature, can only obtain by conversion, decomposition/separation from other chemical substance.Use natural gas hydrogen preparation be in the fossil oil process for making hydrogen the most economical with reasonably, thereby the technology of making raw material for preparing hydrogen with methane plays an important role current.
The methane hydrogen producing technology mainly contains methane vapor reforming, methane catalytic decomposition, methane carbon dioxide reformation, methane portion oxidation reformation, adiabatic reforming hydrogen manufacturing and six kinds of modes of methane self-heating recapitalization at present.The methane vapor reforming industrial applications starts slowly but react the earliest, needs outer heat supply, also is the most expensive in the natural gas hydrogen preparation technology at present; The methane catalytic decomposition process can make pure hydrogen, but catalyzer is easily tied charcoal, needs super regeneration; H in the synthetic gas that the methane carbon dioxide reformation technology is produced
2The ratio of/CO is 1, so this technology is mainly used in the synthetic prepare liquid fuel of F-T; There is explosion hazard in the methane portion oxidation reforming reaction, and industrialization should be subjected to certain limitation; The adiabatic reforming hydrogen manufacturing of methane is that methane is decomposed into pure hydrogen and carbon through high-temperature catalytic, do not need follow-up aqueous vapor replacement(metathesis)reaction and co 2 removal process, but the carbon distribution of how collecting in the reactor but is a big difficult point; Methane self-heating reforming hydrogen manufacturing technology in reactor, the be coupled partial oxidation reaction of methane of heat release and the methane vapor reforming reaction of strong heat absorption, reaction system can realize the self-heating operation, and the level of integrated system height can be realized miniaturization production, and the facility investment expense is low.Therefore, the methane self-heating reforming hydrogen manufacturing is main vehicle-mounted hydrogen production route.
The Chinese invention patent application of application number 200710020394.7 has proposed " a kind of combustion unit of low concentration gaseous hydrocarbon ", be to surround ring-type induction trunk and exhaust-duct by lamellar outside wall surface and inner-wall surface, form the gas channel of bidirectional adverse current, be communicated with the combustion chamber that is positioned at annular channel circle center; The combustion chamber is built-in with porous material, and porous material is provided with an electric heating element.The reaction compartment of this combustion unit is in the porous material zone, make the heat exchange mode of conventional poor efficiency based on gas radiation and convection current change the high efficient heat exchanging based on the radiation of high-temp solid medium into, its rate of combustion height, flameholding, pollutant emission is low, the burner volume is little, compact construction, load regulation range are wide.The induction trunk and the exhaust-duct of bidirectional adverse current heat exchange used in the outside of combustion unit, make low concentration gaseous hydrocarbon before arriving central combustion chamber, can rise to higher temperature, the thermal insulation of oppose side wall simultaneously requires low, has improved efficiency of combustion, has reduced Financial cost.Adopt this device can feed stoichiometric ratio greater than 1 the Sweet natural gas and the gas mixture of air or oxygen, the cracking under hot conditions of excessive Sweet natural gas generates hydrogen, but this belongs to the methane portion oxidation reforming reaction, have explosion hazard, and can be at inside reactor, serious carbon distribution particularly on porous material, occurs, stopped up gas channel, reduced the vital role of porous material in combustion reactions; If what feed is stoichiometric ratio greater than the gas mixture of 1 Sweet natural gas and air (perhaps oxygen), water vapour, because even water vapour is 100 ℃ at normal pressure, this makes about 100 ℃ the gas mixture that flows in the outermost passage of device, serious heat loss, and this also must make the deflated temperature much larger than 100 ℃, has reduced the economy of device; In addition,,, must need to strengthen the horizontal radius of reactor, make the strengthening of reactor through height ratio in order to prolong the reaction times of gas in reactor center because the air current flow direction in the reactor center porous material is a horizontal flow.Consequently make two lateral areas up and down of reactor strengthen, it is serious to see through its heat radiation to environment, even the insulation measure is arranged, still there is energy to scatter and disappear, destroyed the energy balance of methane self-heating reforming hydrogen manufacturing, needed the delivery of supplemental oxygen amount to system's heat supply, this also must consume extra methane, cause unnecessary matter and energy loss, reduced the economy of equipment.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of small-sized high efficiency self-heating natural gas hydrogen-preparing device being provided, to realize the efficient hydrogen manufacturing of Sweet natural gas.
Technical solution problem of the present invention adopts following technical scheme:
Small-sized high efficiency self-heating natural gas device for producing hydrogen of the present invention, has the rolling interchanger, placing porous medium in the newel chamber of rolling interchanger, an electric heating element is set in the porous medium, the rolling interchanger is made up of adjacent induction trunk and discharge flue, the air inlet side of induction trunk is set to the premixed gas inlet mouth of Sweet natural gas and air or oxygen, and the outlet side of discharge flue is set to smoke outlet.
Constructional feature of the present invention is that the air flow inlet that is communicated with induction trunk is positioned at the bottom of newel chamber sidewall in the newel chamber of rolling interchanger, and the exhanst gas outlet that is communicated with discharge flue is positioned at the top of newel chamber sidewall; The newel chamber is divided into top reaction chamber and premix chamber, bottom by mesh grille, and air flow inlet is in the premix chamber, and exhanst gas outlet is in the reaction chamber; The water vapour atomizing nozzle is set in the premix chamber; Voidage is gradually big from bottom to top to be placed on porous medium in the reaction chamber.
Constructional feature of the present invention also is:
The height of described rolling interchanger is through than being 1～10.
The height of reaction chamber is 5～15 times of height in premix chamber in the described rolling interchanger.
Described an electric heating element is to be inserted in the porous medium by the newel top of chamber center of rolling parallel operation, and depth of penetration reaches the 1/2-9/10 of the height of reaction chamber.
The gradually big porous medium of described voidage from bottom to top, its voidage variation range is 0.1-0.9.
Described porous medium is honeycombed ceramic heat storage body, ceramic heat-storing bead or foamed ceramics.
The induction trunk that is provided with on the described rolling interchanger and the number of turns of discharge flue are 1～5.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the reactant of participation hydrogen manufacturing is Sweet natural gas, air or oxygen and water vapour in the present device, belong to methane self-heating reforming hydrogen manufacturing technology, the methane vapor reforming reaction of the partial oxidation reaction of methane of its heat release that has been coupled and strong heat absorption, reaction system can realize the self-heating operation, and has avoided the carrying out of carbon distribution reaction from reaction principle.
2, the present invention directly introduces reaction chamber with water vapour, has avoided heat lost by radiation that water vapour is caused by outer introducing of rolling interchanger, has improved the economy of system; Simultaneously, because water vapour directly the washing away of atomizing to porous medium, make that be trapped in carbon distribution that a small amount of side reaction on the porous medium produces participates in the water vapour reaction and be converted into hydrogen-containing gas and overflow, unimpeded and the superpower heat storage performance that kept the thin channel of porous medium has guaranteed that porous medium plays active effect in hydrogen production reaction.
3, the present invention changes the flow direction of reactant gases in the porous medium, make the horizontal direction air current flow at rolling interchanger center become vertically mobile, buoyancy by thermal-flame extends in the space in entire reaction chamber reactant gases and heat rapidly, quicken the carrying out of reaction, and made uniform distribution of temperature field in the porous medium.And the change of this gas flow makes the height of reaction unit through than becoming big, and the area of two end faces up and down of reaction unit reduces relatively, has reduced the integral heat sink loss of device, has reduced its floor space, has improved economy.
4, use the porous medium of gradual change shape in the reaction chamber of the present invention, reach the purpose of automatic adjusting flame stabilization firing level, the flameholding scope is widened greatly, and in reaction chamber, realize coupling along journey and combustioncharacteristics along the flow direction of gas, make the temperature of combustion field more even, reduce the thermograde in the reaction chamber, the carrying out of aggravation natural gas hydrogen preparation improved hydrogen production efficiency.
5, the present invention carries out reverse heat-exchange by the rolling interchanger with vaporized chemical and the fuel gas that reflects, improved the gasification reaction temperature of vaporized chemical before, make the temperature levels in the reaction chamber be able to further lifting, make the share of heat supply reaction reduce, reduce the consumption of oxygen, promoted the transformation efficiency of Sweet natural gas-hydrogen; The temperature out of fuel gas is able to further reduction simultaneously, and power loss is few; The rolling interchanger outside is the air of normal temperature and the cryogenic fuel gas after heat release, and the heat that is lost to surrounding environment seldom.Therefore, the capacity usage ratio of single unit system reaches maximization, and the efficient of gasification hydrogen-producing is promoted greatly.
6, present device integrated level height can be realized the miniaturization continuous production, and facility investment, working cost are low, can satisfy the requirement of the on-the-spot hydrogen manufacturing of distributing.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is an A-A sectional view in the structural representation of the embodiment of the invention 1.
Fig. 3 is the structure cross-sectional schematic of the embodiment of the invention 2.
Number in the figure: 1 porous medium, 2 rolling interchanger, 3 induction trunks, 4 discharge flues, 5 air flow inlets, 6 premix chambeies, 7 reaction chambers, 8 water vapour atomizing nozzles, 9 mesh grilles, 10 thermal insulation layers, 11 end faces, 12 exhanst gas outlets, 13 an electric heating element, 14 inlet mouths, 15 smoke outlets.
Below by embodiment, and the invention will be further described in conjunction with the accompanying drawings.
Embodiment
Embodiment 1:
Referring to Fig. 1, Fig. 2, the present embodiment equipment integral is cylindrical structure formation, mainly is made up of the rolling interchanger 2 and the porous medium 1 that is placed in one.The height of rolling interchanger 2 is through than between 1～10, and getting its aspect ratio in the present embodiment is 8; Rolling interchanger 2 is made up of adjacent in twos induction trunk 3 and discharge flue 4, and the number of turns of induction trunk 3 and discharge flue 4 is between 1～5, and present embodiment all is taken as 2 circles; The air inlet side of induction trunk 3 is set to the premixed gas inlet mouth 14 of Sweet natural gas and air or oxygen, and the outlet side of discharge flue 4 is set to smoke outlet 15.In column chamber, the center of rolling interchanger 2, the bottom port of induction trunk 3 is set to air flow inlet 5, the top port of discharge flue 4 is set to exhanst gas outlet 12, newel chamber at rolling interchanger 2 is separated out top reaction chamber 7 and premix chamber, bottom 6 by mesh grille 9, the height of reaction chamber 7 is 5～15 times of height in premix chamber 6, and present embodiment is taken as 10 times; Air flow inlet 5 is in the premix chamber 6, and exhanst gas outlet 12 is in the reaction chamber 7.
Shown in Figure 1, water vapour atomizing nozzle 8 is set in premix chamber 6, the water vapour of its ejection points to porous medium 1.
The porous medium 1 of voidage gradual change is set in reaction chamber 7, and the voidage of porous medium 16 increases to exhanst gas outlet 12 gradually along the premix chamber, and between the variation range 0.1-0.9, present embodiment gets 0.5; Porous medium 1 adopts honeycombed ceramic heat storage body, ceramic heat-storing bead or foamed ceramics, also can be the porous material of other particles or three-dimensional network matrix type, and present embodiment specifically adopts the honeycombed ceramic heat storage body.
An electric heating element 13 is to be inserted in the porous medium 1 by the top in the newel chamber of rolling interchanger 2, and depth of penetration will reach reaction chamber 7 height 1/2-9/10, and present embodiment is taken as 4/5.
Inboard evenly coating thermal insulation layer 10 in the both ends of the surface up and down 11 of entire equipment.
During operation, at first start an electric heating element 13, porous medium in the reaction chamber 71 is heated, when its temperature reaches 650 ℃～750 ℃, from inlet mouth 14, feed the premixed gas of Sweet natural gas and air or oxygen or oxygen-rich air, premixed gas enters reaction chamber 7 after by induction trunk 3, air flow inlet 5, premix chamber 6, mesh grille 9, by porous medium 1 heat temperature raising wherein.Through heating after a while, after premixed gas catches fire, close the power supply of an electric heating element 13 in reaction chamber 7.Keep its burning, when the temperature in the reaction chamber 7 reaches 1000 ℃, in premix chamber 6, spray into water vapour by water vapour atomizing nozzle 8, water vapour entrainments the premixed gas with air or oxygen or oxygen-rich air, enter generation methane self-heating reforming hydrogen manufacturing reaction in the reaction chamber 7 by mesh grille 9, and the temperature of reaction of hydrogen manufacturing stablized optimal reaction temperature, about about 900 ℃.The hydrogen-rich gas that generates by exhanst gas outlet 12 and discharge flue 4 after smoke outlet 15 discharge.
Embodiment 2:
Referring to Fig. 3, the equipment integral in the present embodiment is rectangular structure, and other is identical with embodiment 1.
Claims (5)
1. small-sized high efficiency self-heating natural gas device for producing hydrogen, has rolling interchanger (2), placing porous medium (1) in the newel chamber of rolling interchanger, an electric heating element (13) is set in the porous medium (1), described rolling interchanger (2) is made up of adjacent induction trunk (3) and discharge flue (4), the air inlet side of induction trunk (3) is set to the premixed gas inlet mouth (14) of Sweet natural gas and air or oxygen, and the outlet side of discharge flue (4) is set to smoke outlet (15); It is characterized in that in the newel chamber of described rolling interchanger (2) air flow inlet (5) that is communicated with induction trunk (3) is positioned at the bottom of newel chamber sidewall, the exhanst gas outlet (12) that is communicated with described discharge flue (4) is positioned at the top of newel chamber sidewall; Described newel chamber is divided into top reaction chamber (7) and premix chamber, bottom (6) by mesh grille (9), and described air flow inlet (5) is in the premix chamber (6), and described exhanst gas outlet (12) is in the reaction chamber (7); Water vapour atomizing nozzle (8) is set in described premix chamber (6); Voidage is gradually big from bottom to top to be placed on porous medium (1) in the reaction chamber (7).
2. small-sized high efficiency self-heating natural gas device for producing hydrogen according to claim 1 is characterized in that the height of reaction chamber (7) in the described rolling interchanger (2) is 5～15 times of height in premix chamber (6).
3. small-sized high efficiency self-heating natural gas device for producing hydrogen according to claim 1 is characterized in that the porous medium (1) that described voidage from bottom to top is gradually big, and its voidage variation range is 0.1-0.9.
4. small-sized high efficiency self-heating natural gas device for producing hydrogen according to claim 3 is characterized in that described porous medium (1) is honeycombed ceramic heat storage body, ceramic heat-storing bead or foamed ceramics.
5. small-sized high efficiency self-heating natural gas device for producing hydrogen according to claim 1 is characterized in that described rolling interchanger (2) is gone up the induction trunk (3) of setting and the number of turns of discharge flue (4) is 1～5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101165655A CN101531336B (en) | 2009-04-17 | 2009-04-17 | Small-sized high efficiency self-heating natural gas hydrogen-preparing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101165655A CN101531336B (en) | 2009-04-17 | 2009-04-17 | Small-sized high efficiency self-heating natural gas hydrogen-preparing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101531336A CN101531336A (en) | 2009-09-16 |
| CN101531336B true CN101531336B (en) | 2011-04-06 |
Family
ID=41102224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101165655A Expired - Fee Related CN101531336B (en) | 2009-04-17 | 2009-04-17 | Small-sized high efficiency self-heating natural gas hydrogen-preparing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101531336B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682769A (en) * | 2015-02-11 | 2015-06-03 | 天津大学 | Methane conversion hydrogen production type micro-scale thermophotovoltaic power generation device and method |
| CN109231166B (en) * | 2018-09-29 | 2021-03-12 | 西安交通大学 | Hydrogen production fuel rod, preparation method thereof and hydrogen generator based on hydrogen production fuel rod |
| CN109569490B (en) * | 2018-12-13 | 2021-06-08 | 太原理工大学 | Non-catalytic reforming reactor and process thereof |
| CN110608435B (en) * | 2019-09-30 | 2021-06-25 | 西安科技大学 | Thermoelectric power generation heating system based on liquid fuel burning |
| CN111483978B (en) * | 2020-04-30 | 2022-05-03 | 郑州帅先新能源科技有限公司 | Reforming hydrogen production device and reforming hydrogen production method |
| CN112624048A (en) * | 2020-12-10 | 2021-04-09 | 广东醇氢新能源研究院有限公司 | Hydrogen production device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016992A (en) * | 2007-02-15 | 2007-08-15 | 中国科学技术大学 | Combustion device for low concentration gaseous hydrocarbon |
-
2009
- 2009-04-17 CN CN2009101165655A patent/CN101531336B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016992A (en) * | 2007-02-15 | 2007-08-15 | 中国科学技术大学 | Combustion device for low concentration gaseous hydrocarbon |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-104802A 2005.04.21 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101531336A (en) | 2009-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101531336B (en) | Small-sized high efficiency self-heating natural gas hydrogen-preparing device | |
| US7875402B2 (en) | Proton conducting solid oxide fuel cell systems having temperature swing reforming | |
| US7503948B2 (en) | Solid oxide fuel cell systems having temperature swing reforming | |
| CN111533089B (en) | Heater, reforming hydrogen production device and reforming hydrogen production method | |
| CN108557761B (en) | A kind of hydrogen-manufacturing reactor for inhaling heat release coupling | |
| CN109855107B (en) | Heat supply dehydrogenation integrated reactor | |
| CN206666114U (en) | A kind of self-heating type reforming hydrogen-preparation reactor of filled high-temperature phase-change material | |
| CN104112867B (en) | The reforming reaction device of a kind of SOFC system burning capacity cascade utilization and electricity generation system | |
| CN111483978B (en) | Reforming hydrogen production device and reforming hydrogen production method | |
| CN106629598A (en) | Self-heating type reactor used for hydrogen production by reforming and filled with high-temperature phase-change material | |
| CN113830733B (en) | Foam copper integrated reformer with variable catalyst distribution | |
| CN109911849A (en) | Self-heat-supply reforming reaction device and hydrogen making machine suitable for hydrogen making machine | |
| CN103086325A (en) | Natural gas hydrogen production reactor and hydrogen production process thereof | |
| RU2374173C1 (en) | Method of producing synthetic gas | |
| CN101494294B (en) | Catalytic reforming plant for solid-oxide fuel battery | |
| CN202737041U (en) | Natural gas steam reforming hydrogen production device for micro fuel cells | |
| KR101243767B1 (en) | Hydrogen production system for pemfc | |
| CN106365118A (en) | Methyl alcohol reforming reactor with CO purifying and temperature monitoring function | |
| CN206148541U (en) | Ammonia fuel cell | |
| CN101913560B (en) | Distributed natural gas hydrogen production reactor | |
| CN103107348B (en) | A kind of SOFC system coupled mode reforming reactor and electricity generation system | |
| CN101538012B (en) | Device for preparing clean hydrogen-enriched fuel gas from biomass | |
| CN213976968U (en) | Natural gas hydrogen production equipment | |
| CN202089764U (en) | Portable ethanol self-heating hydrogen production reactor | |
| RU138423U1 (en) | DEVICE FOR PRODUCING A GAS MIXTURE ENHANCED WITH HYDROGEN |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20150417 |
|
| EXPY | Termination of patent right or utility model |