CN216678182U - Reformer combining autothermal reforming and steam reforming - Google Patents
Reformer combining autothermal reforming and steam reforming Download PDFInfo
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- CN216678182U CN216678182U CN202122550587.1U CN202122550587U CN216678182U CN 216678182 U CN216678182 U CN 216678182U CN 202122550587 U CN202122550587 U CN 202122550587U CN 216678182 U CN216678182 U CN 216678182U
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- 238000000629 steam reforming Methods 0.000 title claims abstract description 75
- 238000002453 autothermal reforming Methods 0.000 title claims abstract description 50
- 239000000446 fuel Substances 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000002485 combustion reaction Methods 0.000 claims abstract description 39
- 238000002309 gasification Methods 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000001257 hydrogen Substances 0.000 claims abstract description 29
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 29
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003054 catalyst Substances 0.000 claims abstract description 23
- 239000002737 fuel gas Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 14
- 239000012535 impurity Substances 0.000 abstract description 6
- -1 nitrogen-containing compound Chemical class 0.000 abstract description 5
- 230000008016 vaporization Effects 0.000 description 9
- 239000002283 diesel fuel Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 241000264877 Hippospongia communis Species 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 6
- 238000007084 catalytic combustion reaction Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000011865 Pt-based catalyst Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001833 catalytic reforming Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006057 reforming reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
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Abstract
The utility model discloses a reformer combining autothermal reforming and steam reforming. The technical scheme of the utility model is as follows: comprises a burner module and a steam reformer module; the burner module comprises a water gasification chamber for the burner, a fuel gasification chamber for the burner, an autothermal reforming reaction chamber and a combustion chamber; the steam reformer module comprises a steam gasification chamber for steam reforming, a fuel gasification chamber for steam reforming and a steam reforming reaction chamber, and the high-temperature tail gas forms low-temperature combustion tail gas after heat exchange through the steam reformer module. The proposal provided by the utility model obtains hydrogen through an autothermal reforming method for catalyst combustion, provides heat for steam reforming reaction, realizes that the reformer can finish quick start by using the same fuel, and the concentration of the hydrogen in the reformed gas maintains a higher level without nitrogen-containing compound impurities.
Description
Technical Field
The utility model relates to the technical field of reformers, in particular to a reformer combining autothermal reforming and steam reforming.
Background
With the development of fuel cell and hydrogen gas internal combustion engine technology, hydrogen energy is used as an alternative energy source and becomes a consensus of scientific research and product developers. Due to the problems of high pressure, explosion and the like in the storage and transportation process of hydrogen, the scheme of directly storing hydrogen as an energy source has high use cost and great potential safety hazard. Therefore, the production of hydrogen by catalytic reforming using a hydrogen-rich liquid fuel is favored by researchers.
There are various fuel reforming techniques, and among them, the steam reforming method and the autothermal reforming method are put to practical use due to their respective characteristics. The steam reforming method is to react gaseous fuel with steam at high temperature through the action of catalyst to produce hydrogen, and the hydrogen source is not only from fuel, but also replaces hydrogen in water, so that the hydrogen concentration in the product is high, and the main products are hydrogen, carbon dioxide and carbon monoxide. However, the reforming reaction is a high-temperature endothermic reaction, and external heat supply such as catalytic combustion is required, and particularly, a long heating process is required during starting; the catalytic combustion has a very good catalytic effect on hydrogen, methanol and other small molecules, particularly on hydrogen, the catalytic combustion can be started at a lower temperature, but for fuels with more carbon atoms in the molecules, the catalytic combustion effect is poor, the combustion is often insufficient, and most of light hydrocarbons and diesel oil cannot be directly used as a system heat source by catalytic combustion.
The autothermal reforming method realizes the self-heating of the whole system by introducing oxygen in the steam reforming reaction and providing heat through the partial oxidation of fuel, has the characteristics of short cold start time and quick dynamic response, and has compact reactor structure because external heat supply is not needed. However, in practical application, oxygen is obtained by introducing air, and a large amount of nitrogen exists in air, so that a large amount of nitrogen is contained in the components of the reformed gas, the hydrogen concentration is reduced, and the nitrogen easily reacts with hydrogen through the action of a catalyst at high temperature to produce byproducts such as ammonia, and thus, the purification process is complicated, the cost is increased, and the practical application is limited.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the main object of the present invention is to provide a reformer which uses fuel to obtain hydrogen by an autothermal reforming method for catalyst combustion, provides heat for steam reforming reaction, and realizes that the reformer can use the same fuel to complete quick start, and the hydrogen concentration in the reformed gas maintains a high level, and the autothermal reforming and steam reforming without nitrogen-containing compound impurities are combined.
In order to achieve the purpose, the utility model provides the following technical scheme: a reformer combining autothermal reforming and steam reforming comprising a burner module and a steam reformer module; the burner module comprises a burner water gasification chamber, a burner fuel gasification chamber, an autothermal reforming reaction chamber and a combustion chamber, wherein the burner water gasification chamber conveys burner water vapor to the autothermal reforming reaction chamber, the burner fuel gasification chamber conveys fuel gas to the autothermal reforming reaction chamber, the autothermal reforming reaction chamber conveys hydrogen-containing reformed gas to the combustion chamber, and the combustion chamber conveys high-temperature tail gas to the steam reformer module; the steam reformer module comprises a steam reforming water gasification chamber, a steam reforming fuel gasification chamber and a steam reforming reaction chamber, wherein the steam reforming water gasification chamber conveys steam to the steam reforming reaction chamber, the steam reforming fuel gasification chamber conveys fuel gas to the steam reforming reaction chamber, the steam reforming reaction chamber outputs steam reforming gas, and the high-temperature tail gas forms low-temperature combustion tail gas after heat exchange through the steam reformer module.
Preferably, the combustion chamber and the autothermal reforming reaction chamber are both provided with a catalyst which is integrated in a granular or honeycomb form or coated on the surfaces of the combustion chamber and the autothermal reforming reaction chamber.
Compared with the prior art, the utility model has the advantages that the reformer is designed by combining the autothermal reforming method and the steam reforming method, hydrogen obtained by the fuel through the autothermal reforming method is used for catalyst combustion to provide heat for the steam reforming reaction, the reformer can be quickly started by using the same fuel, the hydrogen concentration in the reformed gas is maintained at a high level, and no nitrogen-containing compound impurities exist. Compared with the prior art, the heat supply for steam reforming by using the same fuel is realized especially for the multi-carbon hydrocarbon and the diesel oil. The preheating time of the existing steam reforming reactor is 1-2 hours, and the time can be shortened to 0.5-1 hour by adopting the technology.
Drawings
FIG. 1 is a schematic diagram of a reformer combining autothermal reforming and steam reforming in accordance with the present invention.
In the figure: 1. a burner module; 2. a steam reformer module; 3. burner water; 4. a fuel for the burner; 5. a water gasification chamber for a burner; 6. a fuel vaporizing chamber for the burner; 7. burner water vapor; 8. a fuel gas for the burner; 9. air for autothermal reforming; 10. an autothermal reforming reaction chamber; 11. A reformed gas; 12. air for the combustion chamber; 13. a combustion chamber; 14. high temperature tail gas; 15. water for steam reforming; 16. a fuel for steam reforming; 17. a water vaporizing chamber for steam reforming; 18. a fuel vaporizing chamber for steam reforming; 19. steam for steam reforming; 20. a fuel gas for steam reforming; 21. a steam reforming reaction chamber; 22. steam reformed gas; 23. and (4) low-temperature combustion of tail gas.
Detailed Description
The utility model will be further explained with reference to the drawings.
As shown in fig. 1, a reformer combining autothermal reforming and steam reforming includes a burner module 1 and a steam reformer module 2; the burner module 1 comprises a burner fuel gasification chamber 5, a burner fuel gasification chamber 6, an autothermal reforming reaction chamber 10 and a combustion chamber 13, wherein the burner fuel gasification chamber 6 conveys burner water vapor 7 to the autothermal reforming reaction chamber 10, the burner fuel gasification chamber 6 conveys burner fuel gas 8 to the autothermal reforming reaction chamber 10, the autothermal reforming reaction chamber 10 conveys hydrogen-containing reformed gas 11 to the combustion chamber 13, and the combustion chamber 13 conveys high-temperature tail gas 14 to the steam reformer module 2; the steam reformer module 2 includes a steam reforming water vaporizing chamber 17, a steam reforming fuel vaporizing chamber 18, and a steam reforming reaction chamber 21, the steam reforming water vaporizing chamber 17 supplies steam to the steam reforming reaction chamber 21, the steam reforming fuel vaporizing chamber 18 supplies fuel gas to the steam reforming reaction chamber 21, the steam reforming reaction chamber 21 outputs steam reformed gas 22, and the high temperature exhaust gas 14 is heat-exchanged by the steam reformer module 2 to form low temperature combustion exhaust gas 23.
Preferably, the combustion chamber 13 and the autothermal reforming reaction chamber 10 are each provided therein with a catalyst in the form of pellets or honeycombs integrated or coated on the surfaces of the combustion chamber 13 and the autothermal reforming reaction chamber 10.
The reformer is designed by combining an autothermal reforming method and a steam reforming method, hydrogen obtained by the fuel through the autothermal reforming method is used for catalyst combustion, heat is provided for steam reforming reaction, the reformer can finish quick start by using the same fuel, and the concentration of the hydrogen in reformed gas is maintained at a high level without nitrogen-containing compound impurities. Compared with the prior art, the heat supply for steam reforming by using the same fuel is realized especially for the multi-carbon hydrocarbon and the diesel oil. The preheating time of the existing steam reforming reactor is 1-2 hours, and the time can be shortened to 0.5-1 hour by adopting the technology.
The reformer combining autothermal reforming and steam reforming as described in the present invention can be roughly divided into two parts, a burner module 1 and a steam reformer module 2, the burner module 1 includes a burner water 3 and a burner fuel 4, a feed line and a gasification chamber, an autothermal reforming reaction chamber 10 and a combustion chamber 13. After the whole combustion chamber 13 is preheated to a certain temperature, water and fuel are gasified and then enter the autothermal reforming reaction chamber 10 to react with the autothermal reforming air 9 under the action of a catalyst to obtain reformed gas containing hydrogen, and the reformed gas rich in hydrogen enters the combustion chamber 13 to be completely combusted with air under the action of the catalyst to generate high-temperature tail gas 14.
The steam reformer module 2 includes a vaporization chamber and a pipeline for the steam reforming water 15 and the steam reforming fuel 16, and a steam reforming reaction chamber 21 containing a catalyst. The steam reformer module 2 is preheated by the high-temperature off-gas 14, the water and the fuel entering the steam reforming reaction chamber 21 are vaporized, and the steam 19 for steam reforming and the fuel gas 20 for steam reforming after the vaporization are supplied to the steam reforming reaction chamber 21, thereby obtaining a reformed gas having a low impurity content and a high hydrogen concentration. The heat of the steam reforming reaction is obtained by heat exchange with the high temperature off-gas 14 of the combustor.
The gasification chamber of water and fuel in the burner can be directly gasified at high temperature or gasified at high temperature after being sprayed, can be integrally formed with the burner to carry out bulk heat transfer, and can also adopt combustion tail gas to supply heat independently of the burner; in order to reduce the volume and improve the heat efficiency, the integral molding is suggested. The system needs to be preheated when being started, and the preheating mode can adopt modes such as electric heating or fuel combustion direct heating. The autothermal reforming reaction chamber 10 contains a catalyst, which may be in the form of a pellet, a honeycomb monolith, a coating on the surface of the autothermal reforming reaction chamber 10, or the like, and different fuels may be used with different catalysts, and may be classified into noble metal-based, copper-based, nickel-based, and rare earth catalysts.
The combustion chamber 13 contains a catalyst, which can be in the form of particles, honeycomb monolith, coating on the surface of the autothermal reforming reaction chamber 10, etc., and the catalyst is Pt, Pd and other noble metals and composite catalyst.
The gasification chamber of water and fuel in the steam reforming reactor can be directly gasified at high temperature or gasified at high temperature after being sprayed, can be integrally formed with a combustor to carry out bulk heat transfer, and can also adopt combustion tail gas for heat supply independently of the combustor; in order to reasonably utilize the heat of the tail gas, the tail gas is recommended to be heated by burning the tail gas independently of a burner.
The steam reforming reaction chamber 21 contains a catalyst, which may be in the form of a pellet, a honeycomb monolith, or a coating on the surface of the autothermal reforming reaction chamber 10, and different fuels may be classified into a noble metal-based, copper-based, nickel-based, and rare earth-based catalysts, depending on the catalyst used.
Taking a 10kW diesel reformer as an example, a burner is made of steel, one side of the wall surface of the burner is integrated with a gasification flow channel for water and fuel, the other side is integrated with an autothermal reforming reaction chamber 10, a granular Pt-based catalyst is filled in the autothermal reforming reaction chamber for autothermal reforming reaction, and the combustion effect is monitored by a thermocouple in the tail gas. The middle of the burner is a cylindrical cordierite ceramic honeycomb carrier catalyst with the diameter of 100 and the length of 100, the burner is preheated by an electric heating pipe, when the preheating temperature is reached, diesel oil and water enter the self-heating reaction chamber through the gasification flow channel to generate self-heating reforming with the introduced air, and then generated reformed gas enters the combustion chamber 13 to be combusted with the air generation catalyst to provide high-temperature gas for preheating the steam reformer. The initial preheating power is 2.5kW, and the preheating mode can be completed within 45 minutes.
The steam reformer comprises a steam reforming reaction chamber 21 and a water and fuel gasification chamber, wherein the steam reforming chamber is a tube type gas-gas heat exchanger and is made of steel, a granular Pt-based catalyst is filled in the steam reforming chamber, and the running condition of the reactor is monitored by thermocouples on the reactor and the gasification chamber. Because the diesel oil gasification temperature is higher, the next stage is a diesel oil gasification chamber which is made of aluminum alloy, and the tail gas flowing through the steam reforming reaction chamber 21 is used for diesel oil gasification; and finally, the water vapor gasification chamber is made of aluminum alloy, and the temperature of tail gas flowing through the diesel oil gasification chamber is utilized, so that the reasonable utilization of heat is realized. When the steam reforming reaction chamber 21 reaches the reaction temperature, the reaction temperature is controlled by the amount of fuel for combustion, and the reformed gas with high hydrogen concentration and low impurity content can be obtained by introducing water and fuel into the steam reformer in a proper proportion.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (2)
1. A reformer combining autothermal reforming and steam reforming characterized by: comprises a burner module and a steam reformer module; the burner module comprises a burner water gasification chamber, a burner fuel gasification chamber, an autothermal reforming reaction chamber and a combustion chamber, wherein the burner water gasification chamber conveys burner water vapor to the autothermal reforming reaction chamber, the burner fuel gasification chamber conveys fuel gas to the autothermal reforming reaction chamber, the autothermal reforming reaction chamber conveys hydrogen-containing reformed gas to the combustion chamber, and the combustion chamber conveys high-temperature tail gas to the steam reformer module; the steam reformer module comprises a steam reforming water gasification chamber, a steam reforming fuel gasification chamber and a steam reforming reaction chamber, wherein the steam reforming water gasification chamber conveys steam to the steam reforming reaction chamber, the steam reforming fuel gasification chamber conveys fuel gas to the steam reforming reaction chamber, the steam reforming reaction chamber outputs steam reforming gas, and the high-temperature tail gas forms low-temperature combustion tail gas after heat exchange through the steam reformer module.
2. A reformer combining autothermal reforming and steam reforming in accordance with claim 1, wherein: the combustion chamber and the autothermal reforming reaction chamber are both provided with catalysts which are integrated in a granular or honeycomb mode or coated on the surfaces of the combustion chamber and the autothermal reforming reaction chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550587.1U CN216678182U (en) | 2021-10-22 | 2021-10-22 | Reformer combining autothermal reforming and steam reforming |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550587.1U CN216678182U (en) | 2021-10-22 | 2021-10-22 | Reformer combining autothermal reforming and steam reforming |
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| CN216678182U true CN216678182U (en) | 2022-06-07 |
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| CN202122550587.1U Active CN216678182U (en) | 2021-10-22 | 2021-10-22 | Reformer combining autothermal reforming and steam reforming |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113769676A (en) * | 2021-10-22 | 2021-12-10 | 苏州钧峰新能源科技有限公司 | Reformer combining autothermal reforming and steam reforming |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113769676A (en) * | 2021-10-22 | 2021-12-10 | 苏州钧峰新能源科技有限公司 | Reformer combining autothermal reforming and steam reforming |
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