CN203625026U - Laminated autothermal alcohol hydrogen production microreactor with star micro-boss arrays - Google Patents
Laminated autothermal alcohol hydrogen production microreactor with star micro-boss arrays Download PDFInfo
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- CN203625026U CN203625026U CN201320827262.6U CN201320827262U CN203625026U CN 203625026 U CN203625026 U CN 203625026U CN 201320827262 U CN201320827262 U CN 201320827262U CN 203625026 U CN203625026 U CN 203625026U
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000001257 hydrogen Substances 0.000 title claims abstract description 57
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000003491 array Methods 0.000 title abstract 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 112
- 239000000969 carrier Substances 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims description 56
- 230000002093 peripheral effect Effects 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 238000006057 reforming reaction Methods 0.000 abstract description 6
- 239000000567 combustion gas Substances 0.000 abstract description 3
- 238000002453 autothermal reforming Methods 0.000 abstract 2
- 239000000446 fuel Substances 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- 150000001298 alcohols Chemical class 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000002407 reforming Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000629 steam reforming Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001666 catalytic steam reforming of ethanol Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 238000005245 sintering Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a laminated autothermal alcohol hydrogen production microreactor with star micro-boss arrays. The microreactor is composed of an upper cover plate, a shell and n layers of reaction carriers, wherein each reaction carrier is provided with a double-sided star micro-boss array, and the double-sided star micro-boss array are coincided so as to form each reaction chamber. In adjacent reaction chambers, endothermic and exothermic reactions are alternately performed so as to realize autothermal reforming. An air inlet is formed in the upper cover plate, and through different runners, air enters the reaction chambers to react, and finally flows out of the reaction chambers. In the exothermic reaction, combustion gases such as hydrogen are combusted in an exothermic chamber so as to produce heat, then the heat is transferred to an alcohol reforming reaction chamber through a metal reaction plate so as to meet the demand of alcohol hydrogen production on a lot of heat, thereby realizing autothermal reforming hydrogen production. By using the laminated autothermal alcohol hydrogen production microreactor with star micro-boss arrays disclosed by the utility model, the pressure drop in the process of reaction is reduced, and the conversion rate and hydrogen production efficiency of alcohol reactions are increased, and therefore, the microreactor can provide enough hydrogen fuel for hydrogen fuel cells and the like.
Description
Technical field
The utility model relates to a kind of alcohols hydrogen manufacturing microreactor, especially a kind of stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array structure.
Background technology
The energy is the foundation stone that the mankind depend on for existence and development, but along with the raising of socioeconomic development and the size of population, resource is just consumed with more and more faster speed, and the research and development of novel energy becomes a worldwide difficult problem thereupon, and has caused widely and paid close attention to.Hydrogen Energy likely becomes a kind of very important secondary energy in 21st century on world energy sources stage.It is a kind of very superior new forms of energy, and its major advantage has: combustion heat value is high, and the heat after the burning of every kg of hydrogen is about 3 times of gasoline, 3.9 times of alcohol, 4.5 times of coke.The product of burning is water, is the cleanest in the world energy.Aboundresources, hydrogen can be produced by water or alcohols etc., and water is rich in natural resources the most on the earth, and ethanol etc. can biological fermentation etc. mode make, the classical processes of the natural material recycle of all having deduced, sustainable development.
Along with lacking and the development of hydrogen producing technology of fossil energy, Hydrogen Energy utilization enters our daily life at last, is first flourishing big city, and it can, as carrying town gas, be sent to huge numbers of families by Hydrogen Line.Each user adopts metal hydride basin by hydrogen storage, then connects respectively kitchen kitchen range, bathroom, refrigerator, air conditioning machinery etc., and in garage, fills hydrogen storage equipment with automobile and be connected.People's life, by a Hydrogen Energy pipeline, can replace even power pipeline of coal gas, heating installation, and the service station of automobile also can omit.This hydrogen energy system easy to clean, will give the clean and tidy living environment of people's Creating Comfort.
Aspect alcohols hydrogen manufacturing microreactor, relevant unit conducts in-depth research it both at home and abroad, and has made significant headway at aspects such as reaction mechanism, alcohols catalyst for preparing hydrogen and reaction carriers.Reforming hydrogen-preparation reactor is according to structure difference, can be divided into tubular type and the different structure such as board-like, wherein, micro passage reaction belongs to plate-type reactor, and its advantage is that heat and mass transfer performance is good, performance is better than traditional reactor, its size is little, and specific surface area is large, and speed of reaction is high, by increasing the size of reactor or the unit of reactor, just can expand the scale of reaction.Based on above-mentioned every advantage, alcohols hydrogen manufacturing microreactor has been subject to worldwide extensive concern.
In the last few years, a lot of relevant units of countries in the world had carried out the reforming hydrogen-preparation reactor that the research of reformation hydrogen production reaction mechanism has also been produced to different structure, can be applied in the every field such as aerospace, traffic automobile.The area of catalyzer degree of adhesion and chemical reaction is two essential condition improving reaction process, adheres to and the real reaction area of chemical reaction by improving catalyzer, thus the better reactor of design performance.Meanwhile, the workability of microreactor design, cost height, complexity etc. are also the factors that needs consideration.Therefore, design performance is better, to be easy to processing, to can be mass and be easy to microreactor structure and manufacture method that catalyzer adheres to be the importance of hydrogen manufacturing microreactor technology.
U.S.'s patent of invention (patent No. US 6,190,624B1) a kind of plate-type reactor was once disclosed, its side is used for occurring chemical reaction, opposite side takes away for cryogen the heat that reaction discharges, and in addition, this plate-type reactor has added plate fin structure, improve the heat transfer efficiency of reactor, but increased the filling difficulty of catalyzer.
Chinese invention patent (application number 200610073173.1) discloses a kind of mini reforming hydrogen-preparation reactor.This reactor is integrated combustion tail gas heat exchanging chamber, reformation tail gas heat exchanging chamber, burning chamber and reformation chamber.Reactor recycles tail gas, has improved the overall thermal efficiency of reactor.This reactor catalysis burning and reforming reaction temperature are easy to control, stable, be with a wide range of applications, but this reactor adopt tubular structure, aspect the scale of expansion reactor, have limitation.
Chinese invention patent (application number 200820079472.0) discloses the micro-hydrogen-manufacturing reactor of a kind of laminated self-heating.This reactor adopts half dowel hole location, integrated heat absorption and release reaction chip.This structure of reactor is simply compact, and structure formation is beneficial to the expansion of scale, is convenient to install.But, having difficulties aspect micro-channel chip manufacturing cost and efficiency, there is limitation.
Chinese invention patent (application number 200910100100.0) discloses a kind of self-heating type alcohol reforming hydrogen production micro passage reaction with micro-boss array structure.This reactor comprises three ply board shape reaction carriers, all with micro-boss array structure, forms upper and lower two passages, wherein, upper strata passage is catalytically reforming hydrogen producing passage, and lower floor's passage is combustion channels, reactor energy self-heating operation hydrogen manufacturing, but do not have the stacked and scale of realization response device to amplify.
Summary of the invention
The purpose of this utility model is the defect for overcoming existing alcohols hydrogen manufacturing microreactor, provide a kind of efficiently, the stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array cheaply.
Stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array of the present utility model, comprise the seal case being formed by housing and upper cover plate, in casing, be stacked with n layer disc reaction carriers, n=3～6, the central authorities of upper cover plate are provided with first, second two axial gas entrances, there are four groups of axial gas outlets that are arranged symmetrically with the bottom surface of housing, and every group containing first, second two pneumatic outlets, the both sides up and down of every layer of reaction carriers have peripheral annulus, and intermediate formation concave plane is all evenly distributed with radial micro-boss array on two concave planes
,upper, the central staggered arrangement in lower concave plane has two round boss, wherein, recessed planar rondure boss is provided with the 3rd axial gas entrance, fovea superior planar rondure boss is provided with four-axial gas inlet, on the peripheral annulus of reaction carriers, there are four groups of axial gas outlets that are arranged symmetrically with, every group containing the 3rd, the 4 two pneumatic outlet, wherein, the 3rd pneumatic outlet on the peripheral annulus of odd-level reaction carriers is provided with the otch being communicated with concave plane, top, the 4th pneumatic outlet is provided with the otch being communicated with concave plane, bottom, the 3rd pneumatic outlet on the peripheral annulus of even level reaction carriers is provided with the otch being communicated with concave plane, bottom, the 4th pneumatic outlet is provided with the otch being communicated with concave plane, top, the height of two round boss is respectively identical with the height of the peripheral annulus in concave plane, the same side, the height of micro-boss array is 0.7～0.9 times of peripheral annulus height, in every row micro-boss array, width between centers between adjacent micro-boss is 1.4～1.6 times of micro-boss diameter, when n layer reaction carriers is stacked, two round boss of adjacent reaction carrier are corresponding, between these two round boss, there is O shape silica gel sealing ring, two axial gas entrances of reaction carriers central authorities are corresponding with two axial gas entrances of upper cover plate central authorities, four groups of axial gas outlets of peripheral annulus are corresponding with four groups of axial gas outlets on housing respectively, between the peripheral annulus of adjacent reaction carrier, have soft graphite pad.
Upper cover plate described in the utility model and housing all can be stainless steel, and reaction carriers can be semi-solid aluminium alloy.
The beneficial effect the utlity model has is:
1) this alcohols hydrogen manufacturing microreactor adopts the reaction carriers with star-like micro-boss array structure, compared with arranging, can reduce to drive pressure drop with channel parallel, the transformation efficiency of raising alcohols thereby reaction velocity of downstream declines;
2) each layer of reaction carriers adopts the reaction carriers with star-like micro-boss array structure, compared with microchannel reaction carrier, can reduce the quality of reactor, meanwhile, compared with pipe reaction carrier, has higher heat and mass efficiency;
3) each layer of reaction carriers laminated configuration, heat absorption and release reaction hockets, and has realized the self-heating operation of reaction, and meanwhile, the popularization of reaction carriers has improved the generation speed of hydrogen;
4) each layer of reaction carriers top and bottom are all with micro-boss array structure, and equal attached catalyst on each micro-boss, have increased reaction contact area, and the reaction that is conducive to alcohols hydrogen manufacturing is carried out;
5) this structure of reactor is simple, compact, is easy to batch, low cost fabrication, can adopt the technology of the micro-thixotropic forming of semi-solid state to produce.
Accompanying drawing explanation
Fig. 1 is the structural representation of the stacked self-heating type alcohol hydrogen manufacturing microreactor of the star-like micro-boss array of the utility model band.
Fig. 2 is the structure vertical view of reaction carriers.
Fig. 3 is the structure upward view of reaction carriers.
Fig. 4 is the A-A sectional view of Fig. 2.
Fig. 5 is the fluid flow path sketch in the utility model microreactor disassembly diagram.
In figure: 1, upper cover plate, 2, housing, 3, disc reaction carriers, 4-1, the first axial gas entrance of upper cover plate, 4-2, the second axial gas entrance of upper cover plate, 5, one group of axial gas outlet of housing bottom surface, 5-1, the first pneumatic outlet that housing bottom surface is every group, 5-2, the second pneumatic outlet that housing bottom surface is every group, 6, micro-boss array, 7, the 3rd axial gas entrance, 8, four-axial gas inlet, 9, recessed planar rondure boss, 10, one group of axial gas outlet on peripheral annulus, 10-1, the 3rd pneumatic outlet of every group on peripheral annulus, 10-2, the 4th pneumatic outlet of every group on peripheral annulus, 11, soft graphite pad, 12, O shape silica gel sealing ring, 13, a upper concave plane round boss.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array of the present utility model comprises the seal case being made up of housing 2 and upper cover plate 1, in illustrated example, the stacked disc reaction carriers 3 that is of five storeys in casing, the central authorities of upper cover plate 1 are provided with first, second two axial gas entrance 4-1,4-2, there are four groups of axial gas outlets 5 that are arranged symmetrically with the bottom surface of housing 2, and every group containing first, second two pneumatic outlet 5-1,5-2, the both sides up and down of every layer of reaction carriers 3 have peripheral annulus, and intermediate formation concave plane is all evenly distributed with radial micro-boss array 6 on two concave planes
,in illustrated example, totally 20 row micro-boss, in every row, comprise 15 micro-boss, upper, the central staggered arrangement in lower concave plane has two round boss 9, 13, wherein, recessed planar rondure boss 9 is provided with the 3rd axial gas entrance 7, fovea superior planar rondure boss 13 is provided with four-axial gas inlet 8, on the peripheral annulus of reaction carriers 3, there are four groups of axial gas outlets 10 that are arranged symmetrically with, every group containing the 3rd, the 4 two pneumatic outlet 10-1, 10-2, wherein, the 3rd pneumatic outlet 10-1 on the peripheral annulus of odd-level reaction carriers is provided with the otch being communicated with concave plane, top, the 4th pneumatic outlet 10-2 is provided with the otch being communicated with concave plane, bottom, the 3rd pneumatic outlet 10-1 on the peripheral annulus of even level reaction carriers is provided with the otch being communicated with concave plane, bottom, the 4th pneumatic outlet 10-2 is provided with the otch being communicated with concave plane, top, two round boss 9, 13 height is respectively identical with the height of the peripheral annulus in concave plane, the same side, this example is 1mm, the height of micro-boss array 6 is 0.8mm, the diameter of micro-boss is 1mm, in every row micro-boss array, width between centers between adjacent micro-boss is 1.5mm, when n layer reaction carriers 3 is stacked, two round boss of adjacent reaction carrier 3 are corresponding, for example: the round boss 9 of 3 times concave planes of the first layer reaction carriers is corresponding with the round boss 9 of 3 times concave planes of second layer reaction carriers that turns over turnback, on second layer reaction carriers 3, the round boss 13 of concave plane is corresponding with the round boss 13 of concave plane on the 3rd layer of reaction carriers 3, between two round boss, there is O shape silica gel sealing ring 12, two axial gas entrances 7 of reaction carriers 3 central authorities, 8 with two axial gas entrance 4-1 of upper cover plate 1 central authorities, 4-2 is corresponding, four groups of axial gas outlets of peripheral annulus are corresponding with four groups of axial gas outlets on housing 2 respectively, between the peripheral annulus of adjacent reaction carrier 3, there is soft graphite pad 11.
As shown in Figure 5, for the gas flow paths sketch of alcohols hydrogen manufacturing microreactor, in figure, single line represents the reformation hydrogen production such as ethanol and water vapour mixed gas, two-wire represents the burning mixture such as hydrogen and oxygen body, in this example, 5 reaction carriers form 6 reaction chambers in casing inner stacks, 1,3 and 5 is odd number reaction chamber, and 2,4 and 6 is even number reaction chamber, in working process, burning mixture body and reformation hydrogen production mixed gas respectively from upper cover plate 1 first, the second two axial gas entrance 4-1, 4-2 enters microreactor, in this example, burning mixture body enters the 1st reaction chamber through the first axial gas entrance 4-1 on upper cover plate, enter into the 3rd reaction chamber from the 3rd axial gas entrance 7 of the 2nd layer of reaction carriers central authorities, enter into the 5th reaction chamber by the 3rd axial gas entrance 7 of the 4th layer of reaction carriers central authorities, subsequently, above-mentioned 1, 3, in 5 odd number reaction chambers, four groups of the 3rd pneumatic outlet 10-1 that are arranged symmetrically with on the peripheral annulus of gas flow, on the micro-boss of each odd-level reaction chamber and concave plane, be attached with combustioncatalysts, combustion gases react on its surface, finally flow out microreactor by the first pneumatic outlet 5-1 being arranged symmetrically with on housing, in the time of burning mixture body process even level reaction chamber, due to the obstruct of two round boss, can not enter even level reaction chamber, reformation hydrogen production mixed gas enters the 2nd reaction chamber through the second axial gas entrance 4-2 on upper cover plate 1 and the four-axial gas inlet 8 of the 1st layer of reaction carriers central authorities, enter into the 4th reaction chamber by the four-axial gas inlet 8 of the 3rd layer of reaction carriers central authorities, enter into the 6th reaction chamber by the four-axial gas inlet 8 of the 5th layer of reaction carriers central authorities, subsequently, above-mentioned 2, 4, in 6 even number reaction chambers, four groups of the 4th pneumatic outlet 10-2 that are arranged symmetrically with on the peripheral annulus of gas flow, on the micro-boss of even level reaction chamber and concave plane, be attached with reforming hydrogen-production catalyst, reformed gas reacts on its surface, finally flow out microreactor by the second pneumatic outlet 5-2 being arranged symmetrically with on housing, in the time of reformation hydrogen production gas process odd-level reaction chamber, due to the obstruct of two round boss, can not enter odd-level reaction chamber, in sum, in microreactor, the thermopositive reaction of burning of odd-level reaction chamber, even level reaction chamber carries out steam reforming hydrogen production reaction, inhales like this heat release and hockets, the self-heating operation of completion system.
The working process of the described stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array structure is as follows: before hydrogen production reaction starts, the air in purge reactor, will carry out the reduction of catalyzer simultaneously.(1) in microreactor, pass into nitrogen, remove inner air.(2) subsequently, add the nitrogen, the hydrogen gas mixture that are preheated to 250 ℃, catalyzer is reduced.(3) through 5min left and right, start to be filled with hydrogen and oxygen, carry out combustion reactions, the waste heat in its tail gas can be used heat exchanger, and alcohols and water mixed solution are preheated.(4) simultaneously, carry out temperature control, reach the temperature (550 ℃) of ethanol steam reforming in reforming reaction chamber time, start with propulsion sources such as syringe pumps, the mixing solutions of ethanol water is driven into the reformation chamber of microreactor, carry out hydrogen production reaction.The hydrogen making is discharged by four the 4th pneumatic outlets of bottom half, collects.In hydrogen production process, the temperature of microreactor can and be used temperature controller control by thermocouple assay, and the flow of water-alcohol solution is by flow pump control.After reaction enters into steady state, without external world's heating, just can realize the self-heating steady running of system, constantly produce hydrogen.
The described stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array structure, adopts the mode of soft graphite pad, O-ring seals and holding bolt combination to seal and assembling.Peripheral annulus place between different responding layers is provided with soft graphite pad, between central, circular boss, is provided with O-ring seals, realizes the sealing of the each interlayer of microreactor; Between upper cover plate and casing, adopt holding bolt to connect, safe and reliable.Meanwhile, the stainless steel tube of gas entry and exit adopts argon arc welding mode to be connected with casing and upper cover plate respectively.
The reaction carriers of the described stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array structure is processed by the micro-thixotropic forming of semi-solid state, and the mode that the parts such as upper cover plate can be processed by standard machinery completes.The specific process of reaction carriers can be passed through mould preparation, blank preparation, press forming and carrier repair four-stage and be completed.
The described stacked self-heating type microreactor with star-like micro-boss array structure, can adopt the mode hydrogen manufacturing of ethanol steam reforming, in steam reforming reaction chamber inside, and the chemical reaction of generation, as follows:
Ethanol reforming reaction:
Water gas shift reation:
In described reforming reaction chamber, on two concave planes and micro-boss array, be all attached with Ni/Al
2o
3catalyzer, can increase the area of reforming reaction, for the steam reforming reaction of ethanol.Meanwhile, in combustion reactions chamber, on two concave planes and micro-boss array, be attached with combustioncatalysts, promote that combustion gases react at low temperatures, improve speed of reaction simultaneously, reduce the heat-up time in reformation chamber.So on a reaction carriers with micro-boss array structure, upper and lower surface applies respectively the catalyzer of steam reforming and combustion reactions.The coating procedure of catalyzer is: carrier alkaline etching, adopts NaOH solution to carry out; Zone of oxidation applies, and by preparing aluminium colloidal sol, and reaction carriers is put into and is calcined; Catalyst-coated sintering, mixes and applies with polyvinyl alcohol saturated solution, subsequently calcining and cooling.
Claims (2)
1. the stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array, it is characterized in that: comprise the seal case being formed by housing (2) and upper cover plate (1), in casing, be stacked with n layer disc reaction carriers (3), n=3～6, the central authorities of upper cover plate (1) are provided with first, second two axial gas entrances (4-1,4-2), there are four groups of axial gas outlets (5) that are arranged symmetrically with the bottom surface of housing (2), and every group containing first, second two pneumatic outlets (5-1,5-2), the both sides up and down of every layer of reaction carriers (3) have peripheral annulus, and intermediate formation concave plane is all evenly distributed with radial micro-boss array (6) on two concave planes
,upper, the central staggered arrangement in lower concave plane has two round boss (9, 13), wherein, recessed planar rondure boss (9) is provided with the 3rd axial gas entrance (7), fovea superior planar rondure boss (13) is provided with four-axial gas inlet (8), on the peripheral annulus of reaction carriers (3), there are four groups of axial gas outlets (10) that are arranged symmetrically with, every group containing the 3rd, the 4 two pneumatic outlet (10-1, 10-2), wherein, the 3rd pneumatic outlet (10-1) on the peripheral annulus of odd-level reaction carriers is provided with the otch being communicated with concave plane, top, the 4th pneumatic outlet (10-2) is provided with the otch being communicated with concave plane, bottom, the 3rd pneumatic outlet (10-1) on the peripheral annulus of even level reaction carriers is provided with the otch being communicated with concave plane, bottom, the 4th pneumatic outlet (10-2) is provided with the otch being communicated with concave plane, top, two round boss (9, 13) height is respectively identical with the height of the peripheral annulus in concave plane, the same side, the height of micro-boss array is 0.7～0.9 times of peripheral annulus height, in every row micro-boss array, width between centers between adjacent micro-boss is 1.4～1.6 times of micro-boss diameter, when n layer reaction carriers (3) is stacked, two round boss of adjacent reaction carrier (3) are corresponding, between these two round boss, there is O shape silica gel sealing ring (12), two axial gas entrances (7,8) of reaction carriers (3) central authorities are corresponding with two axial gas entrances (4-1,4-2) of upper cover plate (1) central authorities, four groups of axial gas outlets of peripheral annulus are corresponding with four groups of axial gas outlets on housing (2) respectively, between the peripheral annulus of adjacent reaction carrier (3), have soft graphite pad (11).
2. a kind of stacked self-heating type alcohol hydrogen manufacturing microreactor with star-like micro-boss array according to claim 1, is characterized in that: described upper cover plate and housing are stainless steel, and reaction carriers is semi-solid aluminium alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320827262.6U CN203625026U (en) | 2013-12-16 | 2013-12-16 | Laminated autothermal alcohol hydrogen production microreactor with star micro-boss arrays |
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| CN201320827262.6U CN203625026U (en) | 2013-12-16 | 2013-12-16 | Laminated autothermal alcohol hydrogen production microreactor with star micro-boss arrays |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693617A (en) * | 2013-12-16 | 2014-04-02 | 浙江大学 | Stacked self-heating alcohol hydrogen-production micro-reactor with star-type micro-lug boss array |
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2013
- 2013-12-16 CN CN201320827262.6U patent/CN203625026U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693617A (en) * | 2013-12-16 | 2014-04-02 | 浙江大学 | Stacked self-heating alcohol hydrogen-production micro-reactor with star-type micro-lug boss array |
| CN103693617B (en) * | 2013-12-16 | 2016-01-27 | 浙江大学 | With the stacked self-heating type alcohol hydrogen manufacturing microreactor of star-like micro-boss array |
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