CN210736903U - Ammonia electrolysis hydrogen production device - Google Patents
Ammonia electrolysis hydrogen production device Download PDFInfo
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- CN210736903U CN210736903U CN201920938301.7U CN201920938301U CN210736903U CN 210736903 U CN210736903 U CN 210736903U CN 201920938301 U CN201920938301 U CN 201920938301U CN 210736903 U CN210736903 U CN 210736903U
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Abstract
The utility model discloses an ammonia electrolysis hydrogen production device, which comprises a shell with an ammonia distribution chamber, a combustion chamber and a reaction chamber and a plurality of hydrogen production units arranged in the reaction chamber. The utility model provides an ammonia plant sets up air channel between reacting chamber and combustion chamber, sets up vapor channel bottom the reacting chamber and lateral wall for vapor and the air that lets in all carry out the heat transfer through one section longer passageway and reacting chamber and combustion chamber, are used for gaseous preheating with unnecessary heat in reacting chamber and the combustion chamber, reduce the waste of the energy. Meanwhile, the residual nitrogen generated by the inner cavity in the hydrogen production unit is mixed with the preheated air in the combustion chamber, and the burner in the combustion chamber is subjected to afterburning to release heat, so that the residual ammonia in the tail gas is removed, and simultaneously, the ammonia in the ammonia supply pipe and the ammonia preparation chamber and the air in the air inlet channel can be preheated, thereby further reducing the heat energy loss.
Description
Technical Field
The utility model relates to a hydrogen preparation technical field, concretely relates to ammonia electrolysis hydrogen plant.
Background
The energy is the fundamental guarantee of the development of the modern society and is the foundation stone of human civilization. However, the existing fossil fuel-based energy system not only brings serious environmental pollution problems to people, but also the mass exploitation of fossil fuels faces exhaustion. The search for new energy sources that can replace fossil fuels is an important goal of energy development in all countries today. Hydrogen is a clean energy carrier and attracts much attention, the problem of hydrogen source must be solved for the development and utilization of hydrogen energy, and the development of safe, efficient and economical hydrogen supply and storage technology is the foundation for realizing the utilization of hydrogen energy. There are two main sources of hydrogen today, namely water electrolysis and fossil fuel production. The process of hydrogen production by water electrolysis is simple and pollution-free, but the cost is too high, and a large amount of electric energy is consumed for hydrogen conversion; the wide application of hydrogen as an alternative energy source is limited by the reason that the production of hydrogen from fossil fuels consumes a large amount of non-renewable energy and emits a large amount of greenhouse gases into the environment, contrary to the purpose of using hydrogen as an energy source.
Ammonia is a hydrogen-rich substance containing up to 17.8% by mass of hydrogen, and has recently attracted attention as a raw material for hydrogen production because it is inexpensive and can be converted into a liquid state under pressure and in a low-temperature environment for easy storage and transportation. The tail gas generated by hydrogen production by ammonia is nitrogen which has no pollution and stable structure, and is also suitable for the requirements of environmental protection at present. There are three main ways to obtain hydrogen from ammonia: thermal or catalytic decomposition of ammonia, mechanochemical decomposition of ammonia, and electrochemical decomposition of ammonia.
Solution electrolytes and solid electrolytes can be used for electrochemically decomposing ammonia, i.e., for electrolyzing ammonia. When the solid electrolyte is used for electrolyzing ammonia, the solid electrolyte not only needs to consume electric energy to decompose the ammonia into hydrogen and nitrogen, but also needs to preheat the ammonia in advance to consume energy; after the electrolysis is finished, the residual ammonia needs to be combusted, so that the waste of resources is caused.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the extra energy consumption that needs to cause the wasting of resources when using solid electrolyte electrolysis ammonia among the prior art to provide an ammonia electrolysis system.
The utility model adopts the following technical scheme:
the utility model provides an ammonia electrolysis hydrogen production device, which comprises,
the shell sequentially comprises an ammonia distribution chamber, a combustion chamber and a reaction chamber along the flowing direction of ammonia gas;
the hydrogen production units are arranged in the reaction chamber in parallel, each hydrogen production unit comprises a battery body with an open end, each battery body is provided with an inner cavity suitable for an ammonia supply pipe to be inserted into the battery body from the open end, the ammonia supply pipe penetrates through the combustion chamber, and one end, far away from the inner cavity, of the ammonia supply pipe is communicated with the ammonia distribution chamber, so that ammonia gas in the ammonia distribution chamber enters the corresponding inner cavity in the battery body through the ammonia supply pipe; the battery body sequentially comprises an anode layer, an electrolyte layer and a cathode layer along the direction far away from the inner cavity, and ammonia gas in the inner cavity is in contact with the anode layer;
the air flow channel is arranged between the combustion chamber and the reaction chamber, an air inlet end of the air flow channel is arranged on a first side wall of the combustion chamber, an air outlet end opposite to the air inlet end is arranged close to a second side wall of the combustion chamber, the first side wall and the second side wall are arranged oppositely, and the air outlet end is communicated with the combustion chamber, so that air circulating in the air flow channel enters the combustion chamber after being preheated by heat in the reaction chamber and/or the combustion chamber for a long distance;
and the water vapor channel is arranged on the outer wall of the reaction chamber close to the reaction chamber, and a water vapor inlet and a water vapor outlet of the water vapor channel are oppositely arranged at two ends of the reaction chamber, so that water vapor circulating in the water vapor channel and heat in the reaction chamber enter the reaction chamber after long-distance heat exchange.
Preferably, the extending direction of the air flow passage is perpendicular to the axial direction of the ammonia supply pipe;
and a gap is formed between the ammonia supply pipe and the anode layer of the battery body, and the gap is communicated with the combustion chamber through the inner cavity of the battery body so that tail gas generated after the anode layer reacts enters the combustion chamber.
Preferably, also comprises an ammonia storage tank and a hydrogen collecting device,
the ammonia distribution chamber is provided with an ammonia gas inlet which is communicated with an ammonia storage tank;
and a hydrogen outlet is formed in the side wall of the reaction chamber, which is far away from the steam outlet of the steam channel, and the hydrogen outlet is communicated with a hydrogen collecting device.
Preferably, a porous baffle is horizontally arranged in the combustion chamber, a burner is arranged above the porous baffle, and a tail gas outlet is arranged on the side wall of the combustion chamber far away from the air outlet end.
Preferably, the hydrogen production unit is an anode-supported hydrogen production unit, and the thickness of an electrolyte layer in the anode-supported hydrogen production unit is 10-30 μm; the thickness of the anode layer is 300-1000 μm; the thickness of the cathode layer is 10-50 μm;
or the hydrogen production unit is an electrolyte supporting type hydrogen production unit, and the thickness of an electrolyte layer in the electrolyte supporting type hydrogen production unit is 300-1000 mu m; the thickness of the anode layer is 10-50 μm; the thickness of the cathode layer is 10-50 μm.
Preferably, the number of hydrogen production units is 3 to 5.
Preferably, the system also comprises a first heat exchanger, a second heat exchanger and a water tank;
the ammonia storage tank is communicated with a first heat exchanger, and the first heat exchanger is respectively communicated with the ammonia gas inlet and the tail gas outlet so as to ensure that ammonia gas and tail gas from the hydrogen production component indirectly exchange heat in the first heat exchanger;
the second heat exchanger is communicated with the water tank and is respectively communicated with the water vapor inlet and the hydrogen outlet, so that water flowing out of the water tank is subjected to heat exchange with hydrogen at the hydrogen outlet through the second heat exchanger and then is evaporated into water vapor which is introduced into the water vapor inlet.
Preferably, the hydrogen storage tank further comprises a dryer, the second heat exchanger is further communicated with the dryer, and the dryer is communicated with the hydrogen collecting device, so that the hydrogen in the hydrogen outlet is subjected to heat exchange with water flowing out of the water tank through the second heat exchanger, enters the dryer and then enters the hydrogen collecting device.
Preferably, the ammonia supply pipe is filled with an ammonia decomposition catalyst to form an ammonia decomposition catalyst layer, and the thickness of the ammonia decomposition catalyst layer is greater than the depth of the inner cavity inside the battery body.
The utility model discloses total reaction equation: 2NH3＝N2+3H2The half-reaction between the cathode and the anode varies depending on the electrolyte.
If an oxygen ion conductor is used as the electrolyte layer, the electrolyte layer material includes, but is not limited to, one of YSZ (yttria stabilized zirconia), ScSZ (scandia stabilized zirconia), GDC (gadolinium doped ceria), SDC (strontium doped ceria), or LSGM (strontium and magnesium doped lanthanum gallate), with the specific half-reaction being:
anode: 2NH3+3O2-＝N2+3H2O+6e-
Cathode: 3H2O+6e-＝3H2+3O2-；
The anode layer is made of a material formed by mixing Ni and a material used by the oxygen ion conductor electrolyte layer, and the cathode layer is made of a conductor material formed by mixing a first material and a second material: the first material includes, but is not limited to, one of LSM (lanthanum strontium manganese) or LSCF (lanthanum strontium cobalt iron), and the second material is a material used for the oxygen ion conductor electrolyte layer.
If a proton conductor is used as the electrolyte layer, the electrolyte layer material includes, but is not limited to, barium cerate or barium zirconate-based perovskite material (zirconium and yttrium doped barium cerate, zirconium yttrium ytterbium doped barium cerate, yttrium doped barium zirconate), and the specific half-reactions are as follows:
anode: 2NH3＝N2+6H++6e-
Cathode: 6e-+6H+＝3H2；
The anode layer is made of a material formed by mixing Ni and the used material of the proton conductor electrolyte layer, and the cathode layer comprises but is not limited to one of BSCF (barium strontium cobalt iron), LSCF (lanthanum strontium cobalt iron), PSCF (praseodymium strontium cobalt iron), SSC (samarium strontium cobalt), LSN (lanthanum strontium nickel), PSN (praseodymium strontium nickel) or PBC (praseodymium barium cobalt).
When the oxygen ion conductor electrolyte is used, the water vapor inlet needs to continuously introduce excessive water vapor, and the generated hydrogen is reduced and discharged; if a proton conductor electrolyte is used, a small amount of water vapor is introduced into the water vapor inlet to ensure a certain oxidizing atmosphere.
The utility model discloses ammonia decomposition catalyst main part is Ru base, Ni base catalyst, and the carrier includes and is not limited to carbon carrier, perovskite, aluminium oxide, rare earth metal oxide and hydrotalcite. The combustor is a catalyst combustor or a porous medium combustor.
The utility model discloses technical scheme has following advantage:
1. the utility model provides an ammonia system sets up the air runner between reacting chamber and combustion chamber, sets up the vapor passageway bottom the reacting chamber and lateral wall for vapor and the air that lets in all carry out the heat transfer through one section longer passageway and reacting chamber and combustion chamber, are used for gaseous preheating with unnecessary heat in reacting chamber and the combustion chamber, reduce the waste of the energy.
2. The utility model discloses the surplus ammonia of the production of inner chamber in the hydrogen manufacturing unit mixes with the air after preheating in the combustion chamber, and the combustor department in the combustion chamber afterburning is exothermic, gets rid of surplus ammonia in the tail gas, also can preheat the air that supplies ammonia pipe and ammonia to prepare indoor ammonia and air admission passageway simultaneously, further reduces the heat energy loss.
3. The utility model discloses use solid electrolyte to assist electrolysis ammonia preparation hydrogen, produce hydrogen in the reacting chamber, produce nitrogen gas in the inner chamber to separate the nitrogen gas and the hydrogen of preparing effectively, directly obtain the high-purity hydrogen of high yield, remaining ammonia also along with the inner chamber gets into the afterburning in the combustion chamber, can not mix with the hydrogen production that will collect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an ammonia electrolysis hydrogen production apparatus provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a hydrogen production part of an ammonia electrolysis hydrogen production apparatus provided in example 1 of the present invention;
fig. 3 is a schematic structural diagram of a hydrogen production unit of an ammonia electrolysis hydrogen production apparatus provided in example 1 of the present invention;
fig. 4 is a schematic structural diagram of a hydrogen production unit of an ammonia electrolysis hydrogen production apparatus provided in embodiment 3 of the present invention.
Description of reference numerals:
1-hydrogen production component; 2-an ammonia storage tank; 3-a hydrogen gas collection device; 4-a water tank; 5-a dryer; 6-a first heat exchanger; 7-a second heat exchanger; 8-an ammonia inlet channel; 9-a hydrogen outlet channel; 10-a water inlet channel; 11-a tail gas channel;
101-a hydrogen production unit; 102-a housing; 103-an ammonia distribution chamber; 104-a combustion chamber; 105-a reaction chamber; 106-air flow path; 107-water vapor channels; 108-a burner; 109-a porous baffle; 110-ammonia inlet; 111-exhaust outlet; 112-an air inlet end; 113-hydrogen gas outlet; 114-water vapor inlet; 115-an air outlet port; 116 a water vapor outlet;
1011-ammonia supply pipe; 1012-electrolyte layer; 1013-an anode layer; 1014-a cathode layer; 1015-lumen; 1016-Ammonia decomposition catalyst layer.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The hydrogen production unit of the utility model can use an electrolyte support type and an anode support type, and the following embodiments all use the anode support type; the electrolyte layer may use a proton conductor as well as an oxygen ion conductor, and the following examples all use an oxygen ion conductor as the electrolyte layer.
Example 1
The embodiment of the utility model provides an ammonia electrolysis hydrogen plant, including hydrogen manufacturing part 1, as shown in figure 2, specifically be:
a housing 102 including, in order in a flow direction of the ammonia gas, an ammonia distribution chamber 103, a combustion chamber 104, and a reaction chamber 105;
5 groups of hydrogen production units 101 arranged in parallel in the reaction chamber, as shown in fig. 3, the hydrogen production units 101 include a battery body having an open end, the battery body has an inner cavity 1015 adapted for inserting an ammonia supply pipe 1011 into the battery body from the open end, the ammonia supply pipe 1011 penetrates the combustion chamber 104, and one end of the ammonia supply pipe 1011 away from the inner cavity 1015 is communicated with the ammonia distribution chamber 103, so that ammonia gas in the ammonia distribution chamber 103 enters the inner cavity 1015 inside the corresponding battery body through the ammonia supply pipe 1011; the battery body comprises an anode layer 1013, an electrolyte layer 1012 and a cathode layer 1014 in sequence in a direction away from the inner cavity 1015, and ammonia gas in the inner cavity 1015 is in contact with the anode layer 1013;
an air flow channel 106, as shown in fig. 2, disposed between the combustion chamber 104 and the reaction chamber 105, wherein an air inlet end 112 of the air flow channel 106 is disposed on a first sidewall of the combustion chamber 104, an air outlet end 115 disposed opposite to the air inlet end 112 is disposed near a second sidewall of the combustion chamber 104, the first sidewall and the second sidewall are disposed opposite to each other, and the air outlet end 115 is communicated with the combustion chamber 104, so that the air flowing through the air flow channel 106 enters the combustion chamber 104 after being preheated by heat in the reaction chamber 105 and/or the combustion chamber 104 for a long distance;
and a water vapor channel 107 arranged on the outer wall of the reaction chamber in close proximity to the reaction chamber 105, wherein a water vapor inlet 114 and a water vapor outlet 116 of the water vapor channel 107 are oppositely arranged at two ends of the reaction chamber 105, so that the water vapor flowing through the water vapor channel 107 and the heat in the reaction chamber 105 enter the reaction chamber 105 after long-distance heat exchange.
The extending direction of the air flow channel 106 is perpendicular to the axial direction of the ammonia supply pipe 1011;
as shown in fig. 3, a gap exists between the ammonia supply pipe 1011 and the anode layer 1013 of the battery body, and the gap communicates with the combustion chamber 104 through the inner cavity 1015 of the battery body, so that the exhaust gas after the reaction at the anode layer 1013 enters the combustion chamber 104.
As shown in fig. 1, further comprises an ammonia storage tank 2 and a hydrogen collecting device 3,
the ammonia distribution chamber 103 is provided with an ammonia gas inlet 110, and the ammonia gas inlet 110 is communicated with the ammonia storage tank 2;
a hydrogen outlet 113 is arranged on the side wall of the reaction chamber 105 far away from the water vapor outlet 116 of the water vapor channel 107, and the hydrogen outlet 113 is communicated with the hydrogen collecting device 3.
A porous baffle plate 109 is horizontally arranged in the combustion chamber 104, a burner 108 is arranged above the porous baffle plate 109, and a tail gas outlet 111 is arranged on the side wall of the combustion chamber 104 far away from the air outlet end 115.
The hydrogen production unit 101 of this example uses an anode-supported type in which the electrolyte layer 1012 has a thickness of 15 μm, the anode layer 1013 has a thickness of 700 μm, and the cathode layer 1014 has a thickness of 20 μm; the electrolyte layer 1012 is made of oxygen ion conductor electrolyte, specifically YSZ, and the anode layer 1013 is made of: Ni-YSZ, cathode layer 1014 material is: LSM-YSZ.
As shown in fig. 1, the system also comprises a first heat exchanger 6, a second heat exchanger 7 and a water tank 4;
the ammonia storage tank 2 is communicated with a first heat exchanger 6, and the first heat exchanger 6 is respectively communicated with the ammonia gas inlet 110 and the tail gas outlet 111, so that the ammonia gas and the tail gas from the hydrogen production part 1 indirectly exchange heat in the first heat exchanger 6;
the second heat exchanger 7 is communicated with the water tank 4, and the second heat exchanger 7 is respectively communicated with the water vapor inlet 114 and the hydrogen gas outlet 113, so that water flowing out of the water tank 4 is subjected to heat exchange with hydrogen gas at the hydrogen gas outlet 113 through the second heat exchanger 7 and then is evaporated into water vapor which is introduced into the water vapor inlet 114.
The hydrogen storage tank is characterized by further comprising a dryer 5, the second heat exchanger 7 is further communicated with the dryer 5, and the dryer 5 is communicated with the hydrogen collecting device 3, so that the hydrogen in the hydrogen outlet 113 enters the dryer 5 after exchanging heat with the water flowing out of the water tank 4 through the second heat exchanger 7 and then enters the hydrogen collecting device 3.
Example 2
This example provides a method of operating the ammonia electrolysis hydrogen production apparatus provided in example 1.
Ammonia gas enters the ammonia distribution chamber 103 from the ammonia storage tank 2 along with the ammonia inlet channel 8 through the ammonia gas inlet 110, is distributed to enter the ammonia supply pipe 1011 of each hydrogen production unit 101, then enters the inner cavity 1015 of each hydrogen production unit 101, and contacts with the anode layer 1013; the water flows out from the water tank 4, and as the water inlet passage 10 is evaporated into water vapor through the second heat exchanger 7, the water vapor enters the reaction chamber 105 from the water vapor outlet 116 through the water vapor passage 107 from the water vapor inlet 114 and contacts the cathode layer 1014.
The following reaction takes place in the reaction chamber 105:
anode: 2NH3+3O2-＝N2+3H2O+6e-
Cathode: 3H2O+6e-＝3H2+3O2-。
Nitrogen and residual ammonia gas generated in the anode layer 1013 enter the combustion chamber 104, and are mixed with air entering the combustion chamber 104 from the air inlet port 112 through the air flow passage 106 from the air outlet port 115, and are afterburned in the burner 108 to release heat, and the ammonia gas therein is removed and then is discharged into the exhaust gas passage 11 through the exhaust gas discharge port 111; the hydrogen gas generated by the cathode layer 1014 enters the hydrogen outlet channel 9 through the hydrogen outlet port 113 and finally enters the hydrogen gas collecting device 3.
The first heat exchanger 6 is respectively communicated with the ammonia gas inlet 110 and the tail gas outlet 111, so that the ammonia gas and the tail gas from the hydrogen production part 101 indirectly exchange heat in the first heat exchanger 6; the second heat exchanger 7 is communicated with the water tank 4, and the second heat exchanger 7 is respectively communicated with the water vapor inlet 114 and the hydrogen gas outlet 113, so that water flowing out of the water tank 4 is subjected to heat exchange with hydrogen gas at the hydrogen gas outlet 114 through the second heat exchanger 7 and then is evaporated into water vapor which is introduced into the water vapor inlet 114; the second heat exchanger 7 is communicated with the dryer 5, so that the hydrogen gas in the hydrogen gas outlet 114 enters the dryer 5 after exchanging heat with the water flowing out of the water tank 4 through the second heat exchanger 7, and then enters the hydrogen gas collecting device 3.
Example 3
In this embodiment, compared with embodiment 1, the other structures are completely the same, and the only difference is that the ammonia supply pipe 1011 of the hydrogen production unit 101 is filled with the ammonia decomposition catalyst layer 1016, as shown in fig. 4, the material of the ammonia decomposition catalyst layer 1016 is Ru simple substance, and the carrier is alumina.
When the ammonia gas burner works, ammonia gas enters the ammonia supply pipe 1011 to contact the ammonia decomposition catalyst layer 1016, part of the ammonia gas is decomposed into hydrogen and nitrogen gas in advance, after the ammonia gas enters the inner cavity 1015, the hydrogen gas contacts the anode layer 1013 and exchanges water vapor ions with the cathode layer 1014, the anode layer 1013 generates water vapor, the cathode layer 1014 generates hydrogen gas, and the residual hydrogen gas in the inner cavity 1015, the water vapor generated by reaction and the nitrogen gas enter the combustion chamber 104 together to be mixed with air, and the combustion chamber 108 afterburning releases heat.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. An ammonia electrolysis hydrogen production device is characterized by comprising,
the shell sequentially comprises an ammonia distribution chamber, a combustion chamber and a reaction chamber along the flowing direction of ammonia gas;
the hydrogen production units are arranged in the reaction chamber in parallel, each hydrogen production unit comprises a battery body with an open end, each battery body is provided with an inner cavity suitable for an ammonia supply pipe to be inserted into the battery body from the open end, the ammonia supply pipe penetrates through the combustion chamber, and one end, far away from the inner cavity, of the ammonia supply pipe is communicated with the ammonia distribution chamber, so that ammonia gas in the ammonia distribution chamber enters the corresponding inner cavity in the battery body through the ammonia supply pipe; the battery body sequentially comprises an anode layer, an electrolyte layer and a cathode layer along the direction far away from the inner cavity, and ammonia gas in the inner cavity is in contact with the anode layer;
the air flow channel is arranged between the combustion chamber and the reaction chamber, an air inlet end of the air flow channel is arranged on a first side wall of the combustion chamber, an air outlet end opposite to the air inlet end is arranged close to a second side wall of the combustion chamber, the first side wall and the second side wall are arranged oppositely, and the air outlet end is communicated with the combustion chamber, so that air circulating in the air flow channel enters the combustion chamber after being preheated by heat in the reaction chamber and/or the combustion chamber for a long distance;
and the water vapor channel is arranged on the outer wall of the reaction chamber close to the reaction chamber, and a water vapor inlet and a water vapor outlet of the water vapor channel are oppositely arranged at two ends of the reaction chamber, so that water vapor circulating in the water vapor channel and heat in the reaction chamber enter the reaction chamber after long-distance heat exchange.
2. The apparatus for producing hydrogen by electrolysis of ammonia according to claim 1, wherein the air flow passage extends in a direction perpendicular to the axial direction of the ammonia supply pipe;
and a gap is formed between the ammonia supply pipe and the anode layer of the battery body, and the gap is communicated with the combustion chamber through the inner cavity of the battery body so that tail gas generated after the anode layer reacts enters the combustion chamber.
3. The ammonia electrolysis hydrogen production apparatus according to claim 1 or 2, further comprising an ammonia storage tank and a hydrogen gas collection device,
the ammonia distribution chamber is provided with an ammonia gas inlet which is communicated with an ammonia storage tank;
and a hydrogen outlet is formed in the side wall of the reaction chamber, which is far away from the steam outlet of the steam channel, and the hydrogen outlet is communicated with a hydrogen collecting device.
4. The apparatus for producing hydrogen by electrolyzing ammonia according to claim 1 or 2, wherein a porous baffle is horizontally arranged in the combustion chamber, a burner is arranged above the porous baffle, and a tail gas outlet is arranged on the side wall of the combustion chamber far away from the air outlet end.
5. The ammonia electrolysis hydrogen production apparatus according to claim 1 or 2, wherein the hydrogen production unit is an anode-supported hydrogen production unit, and the thickness of an electrolyte layer in the anode-supported hydrogen production unit is 10-30 μm; the thickness of the anode layer is 300-1000 μm; the thickness of the cathode layer is 10-50 μm.
6. The apparatus for hydrogen production by ammonia electrolysis according to claim 1 or 2, wherein the hydrogen production unit is an electrolyte-supported hydrogen production unit, and the thickness of the electrolyte layer in the electrolyte-supported hydrogen production unit is 300-1000 μm; the thickness of the anode layer is 10-50 μm; the thickness of the cathode layer is 10-50 μm.
7. The apparatus for hydrogen production by ammonia electrolysis according to claim 1 or 2, wherein the number of the hydrogen production units is 3 to 5.
8. The apparatus for the electrolytic production of hydrogen from ammonia as claimed in claim 3, further comprising a first heat exchanger, a second heat exchanger and a water tank;
the ammonia storage tank is communicated with a first heat exchanger, and the first heat exchanger is respectively communicated with the ammonia gas inlet and the tail gas outlet so as to ensure that the ammonia gas and the tail gas from the hydrogen production component indirectly exchange heat in the first heat exchanger;
the second heat exchanger is communicated with the water tank and is respectively communicated with the water vapor inlet and the hydrogen outlet, so that water flowing out of the water tank is subjected to heat exchange with hydrogen at the hydrogen outlet through the second heat exchanger and then is evaporated into water vapor which is introduced into the water vapor inlet.
9. The apparatus for producing hydrogen by electrolyzing ammonia according to claim 8, further comprising a dryer, wherein the second heat exchanger is further communicated with the dryer, and the dryer is communicated with the hydrogen collecting device, so that the hydrogen in the hydrogen outlet is subjected to heat exchange with the water flowing out of the water tank through the second heat exchanger, enters the dryer and then enters the hydrogen collecting device.
10. The apparatus for producing hydrogen by electrolysis of ammonia according to claim 9, wherein the inside of the ammonia supply pipe is filled with an ammonia decomposition catalyst to form an ammonia decomposition catalyst layer, and the thickness of the ammonia decomposition catalyst layer is larger than the depth of the inner cavity inside the battery body.
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| CN201920938301.7U CN210736903U (en) | 2019-06-21 | 2019-06-21 | Ammonia electrolysis hydrogen production device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295372A (en) * | 2019-06-21 | 2019-10-01 | 福州大学化肥催化剂国家工程研究中心 | A kind of ammonia electrolysis hydrogen production device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295372A (en) * | 2019-06-21 | 2019-10-01 | 福州大学化肥催化剂国家工程研究中心 | A kind of ammonia electrolysis hydrogen production device |
| CN110295372B (en) * | 2019-06-21 | 2023-09-12 | 福大紫金氢能科技股份有限公司 | Ammonia electrolysis hydrogen production device |
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