CN109437101B - System for preparing hydrogen from metal hydride - Google Patents
System for preparing hydrogen from metal hydride Download PDFInfo
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- CN109437101B CN109437101B CN201811575492.1A CN201811575492A CN109437101B CN 109437101 B CN109437101 B CN 109437101B CN 201811575492 A CN201811575492 A CN 201811575492A CN 109437101 B CN109437101 B CN 109437101B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/065—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents from a hydride
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
A system for preparing hydrogen by metal hydride comprises a metal hydride storage tank, a spent metal hydride storage tank, a rotary valve, an A reaction tank and a B reaction tank, wherein the metal hydride storage tank is communicated with an A reversing valve at the inlet of the rotary valve through an adding feed pipe; a B reversing valve at the outlet of the rotary valve is respectively connected with the A reaction tank and the B reaction tank through an adding discharge pipe and a C reversing valve; the reaction tank A and the reaction tank B are connected to a metal hydride storage tank through an addition communicating pipe by an E reversing valve; the reaction tank A and the reaction tank B are connected with a reversing valve A through a suction feed pipe by a reversing valve D, the reversing valve B is connected with a spent metal hydride storage tank through a suction discharge pipe, and the spent metal hydride storage tank is provided with a suction communicating pipe which is communicated with the reaction tank A and the reaction tank B through an F reversing valve; the A reaction tank and the B reaction tank are respectively provided with a reaction water inlet pipe, a cooling interlayer, a moisture drying device and a hydrogen output pipe. The invention improves the reaction rate of the metal hydride and realizes the stable and uninterrupted supply of hydrogen.
Description
Technical Field
The invention belongs to the technical field of hydrogen preparation, and relates to a system for preparing hydrogen from metal hydride.
Background
In the twenty-first century, with the continuous improvement of environmental awareness of people, the problem of environmental pollution caused by toxic and harmful gases generated by the combustion of traditional fossil fuels is gradually concerned by people, so that new alternative fuels are urgently needed, and hydrogen energy is generated at the same time. The hydrogen energy is the most ideal clean fuel at present and is a renewable resource, the heat value is high, most products after combustion are water vapor, and therefore, the hydrogen energy is an ideal green fuel.
Metal hydrides are a recognized important carrier for hydrogen storage. Two methods can be used for generating hydrogen from metal hydrides: thermally decomposed and reacted directly with water. The decomposition of metal hydrides by heat to produce hydrogen gas requires additional heat to be consumed and the dissociation temperature is also high for some metal hydrides. The direct reaction of metal hydrides with water to produce hydrogen gas, although effective, can be difficult to control if the water is in excess and/or the heat of reaction is not timely removed.
Disclosure of Invention
The invention aims to provide a system for preparing hydrogen by using metal hydride, which improves the reaction rate of the metal hydride, realizes stable and uninterrupted supply of the hydrogen and solves the problems of generation of the hydrogen and replacement of hydrogen fuel.
The technical scheme of the invention is as follows:
a system for preparing hydrogen by using metal hydride comprises a metal hydride storage tank, a spent metal hydride storage tank, a rotary valve, an A reaction tank, a B reaction tank, a metering device, an adding feed pipe, an adding discharge pipe, a suction feed pipe, a suction discharge pipe, an adding communicating pipe, a suction communicating pipe, an A reversing valve, a B reversing valve, a C reversing valve, a D reversing valve, an E reversing valve, an F reversing valve, a cooling water inlet pipe, a cooling water outlet pipe, a reaction water inlet pipe, a moisture drying device and a hydrogen output pipe; the A reaction tank, the B reaction tank, the metal hydride storage tank and the spent metal hydride storage tank are all sealed tank bodies; the inlet of the rotary valve is provided with a reversing valve A, and the outlet of the rotary valve is provided with a metering device and a reversing valve B;
the bottom of the metal hydride storage tank is connected to an A reversing valve of a rotary valve inlet through an addition feed pipe; a B reversing valve at the outlet of the rotary valve is respectively connected with the tops of the A reaction tank and the B reaction tank through an adding discharge pipe and a C reversing valve; the tops of the reaction tank A and the reaction tank B are respectively connected to the bottom of the metal hydride storage tank through an adding communicating pipe by an E reversing valve;
the bottom of the reaction tank A and the bottom of the reaction tank B are respectively connected with a reversing valve A at the inlet of the rotary valve through a suction feed pipe by a reversing valve D, a reversing valve B at the outlet of the rotary valve is connected to the top of the spent metal hydride storage tank through a suction discharge pipe, and the top of the spent metal hydride storage tank is respectively communicated with the bottom of the reaction tank A and the bottom of the reaction tank B through a suction communicating pipe by a reversing valve F;
the reaction tank A and the reaction tank B are respectively provided with a reaction water inlet pipe communicated to the bottom, and the reaction tank A and the reaction tank B are provided with a moisture drying device; hydrogen output pipes are arranged at the tops of the reaction tank A and the reaction tank B;
the lateral wall of A retort and B retort sets up the cooling intermediate layer, and the below of A retort and B retort sets up the cooling water inlet tube that communicates the cooling intermediate layer, and the upside of A retort and B retort sets up the cooling water outlet pipe that communicates the cooling intermediate layer.
The moisture drying devices of the reaction tank A and the reaction tank B are internally provided with electric heating devices or self-heating or other heating modes.
The rotary valve is provided with a protective cover, and nitrogen or inert gas is filled in the protective cover.
And the cooling water inlet pipe, the cooling water outlet pipe and the reaction water inlet pipe are all provided with valves.
The feeding pipe extends into the port at the bottom of the metal hydride storage tank and is a horn-shaped suction inlet, so that the feeding is facilitated; the suction feed pipe extends into two ports at the bottoms of the reaction tank A and the reaction tank B and is a horn-shaped suction inlet, so that the suction is convenient; the adding communicating pipe extends into the bottom of the metal hydride storage tank, and the sucking communicating pipe extends into the bottoms of the A reaction tank and the B reaction tank, so that materials can be fluidized conveniently, and pneumatic conveying is facilitated.
The reaction water inlet pipe supplies reaction water in a drip irrigation wetting mode; the reaction water inlet pipe is evenly provided with drippers along the inner side tank walls of the A reaction tank and the B reaction tank, and the drippers are connected with the reaction water inlet pipe through a radial ring pipe.
The system is used for hydrogen fuel automobiles, high-speed rails, trucks, warships, airplanes, aviation equipment, tanks, armored vehicles, civil ships, engineering machinery, temperature regulating systems of clothes, power systems of shoes, household appliances or mobile phones.
The reaction water inlet pipe is replaced by any flow-controllable mode to supply reaction water.
The method for replacing materials by the rotary valve and the method for adding and replacing materials in the metal hydride storage tank and the metal hydride depleted storage tank can be replaced by any method including but not limited to methods using gravity conveying, mechanical conveying, pneumatic conveying, vacuum conveying, hydraulic conveying, electromagnetic conveying or a combination thereof, so that the material adding or replacing can be reliably realized.
At least one of the metal hydride storage tank, the metal hydride depleted storage tank, the rotary valve, the A reaction tank and the B reaction tank is arranged.
The metal hydride includes, but is not limited to, magnesium hydride, which may be a rare earth metal hydride, a nickel base, a lithium base, etc.
When the ambient temperature is low, an antifreezing solution can be added into the interlayer cooling water. All connecting pipelines and valves in the A reaction tank, the B reaction tank, the metal hydride storage tank and the spent metal hydride storage tank and the system are provided with internal heat preservation or external heat preservation or internal and external heat preservation.
The system for preparing hydrogen by using metal hydride realizes the functions of adding the metal hydride into the reaction tanks and pumping the exhausted metal hydride by a pneumatic conveying mode taking the rotary valve as a core component, is provided with at least two reaction tanks and takes measures to cool the reaction tanks so as to control the reaction speed, also provides sufficient reaction time for the reaction, improves the reaction rate of the metal hydride, also realizes the stable and uninterrupted supply of the hydrogen, has high energy density, solves the problems of the generation of the hydrogen and the replacement of the hydrogen fuel, is beneficial to the popularization and the use of the green and environment-friendly hydrogen fuel, lightens the environmental pollution, can solve the outstanding problem of energy shortage, and realizes the sustainable development of human society and production life.
Drawings
Fig. 1 is a schematic flow diagram of a system for producing hydrogen from a metal hydride according to the present invention.
Wherein: 1-metal hydride storage tank, 2-metal hydride storage tank, 3-rotary valve, 4-A reaction tank, 5-B reaction tank, 6-metering device, 7-adding feed pipe, 8-adding discharge pipe, 9-sucking feed pipe, 10-sucking discharge pipe, 11-adding communicating pipe, 12-sucking communicating pipe, 13-A reversing valve, 14-B reversing valve, 15-C reversing valve, 16-D reversing valve, 17-E reversing valve, 18-F reversing valve, 19-cooling water inlet pipe, 20-cooling water outlet pipe, 21-reaction water inlet pipe, 22-moisture drying device, 23-protective cover, 24-hydrogen output pipe, 25-sucking gun mouth and 26-filling gun mouth.
Detailed Description
The present invention will be described in detail with reference to the following examples and drawings. The scope of protection of the invention is not limited to the embodiments, and any modification made by those skilled in the art within the scope defined by the claims also falls within the scope of protection of the invention.
Example 1
The system for preparing hydrogen by using metal hydride of the invention is shown in figure 1, and comprises a metal hydride storage tank 1, a spent metal hydride storage tank 2, a rotary valve 3, an A reaction tank 4, a B reaction tank 5, a metering device 6, an adding feed pipe 7, an adding discharge pipe 8, a suction feed pipe 9, a suction discharge pipe 10, an adding communicating pipe 11, a suction communicating pipe 12, an A reversing valve 13, a B reversing valve 14, a C reversing valve 15, a D reversing valve 16, an E reversing valve 17, an F reversing valve 18, a cooling water inlet pipe 19, a cooling water outlet pipe 20, a reaction water inlet pipe 21, a moisture drying device 22 and a hydrogen output pipe 24. The metal hydride storage tank 1, the spent metal hydride storage tank 2, the A reaction tank 4 and the B reaction tank 5 are sealed tank bodies. The inlet of the rotary valve 3 is provided with a diverter valve 13 a, into which material enters from both inlets of the diverter valve. The outlet of the rotary valve 3 is provided with a metering device 6 and a B reversing valve 14, the metering device meters the material output by the rotary valve, and the B reversing valve 14 divides the material into two paths and outputs the two paths from the rotary valve. The rotary valve 3 is provided with a protective cover 23, and the protective cover 23 is filled with nitrogen gas or inert gas.
The bottom of the metal hydride storage tank 1 is connected to the a-way valve 13 at the inlet of the rotary valve through the addition feed pipe 7. And a B reversing valve 14 at the outlet of the rotary valve is connected with an adding discharge pipe 8, and the adding discharge pipe 8 is respectively connected with the tops of the A reaction tank 4 and the B reaction tank 5 through a C reversing valve 15. The tops of the A reaction tank 4 and the B reaction tank 5 are respectively connected with an E reversing valve 17, and the E reversing valve 17 is connected to the bottom of the metal hydride storage tank 1 through an adding communicating pipe 11.
The bottoms of the A reaction tank 4 and the B reaction tank 5 are respectively connected with a D reversing valve 16, the D reversing valve 16 is connected with an A reversing valve 13 at the inlet of the rotary valve through a suction feed pipe 9, and a B reversing valve 14 at the outlet of the rotary valve is connected with the top of the spent metal hydride storage tank 2 through a suction discharge pipe 10. The top of the metal hydride depleted storage tank 2 is provided with a suction communicating pipe 12 which is respectively communicated with the bottoms of the A reaction tank 4 and the B reaction tank 5 through an F reversing valve 18.
The A reaction tank 4 and the B reaction tank 5 are respectively provided with a reaction water inlet pipe 21 communicated to the bottom, and the reaction water inlet pipe 21 is provided with a valve. The A reaction tank 4 and the B reaction tank 5 are internally provided with an electrically heated moisture drying device 22. And hydrogen output pipes 24 are arranged at the tops of the A reaction tank 4 and the B reaction tank 5.
The lateral wall of A retort 4 and B retort 5 sets up the cooling intermediate layer, and the below of A retort and B retort sets up the cooling water inlet tube 19 that communicates the cooling intermediate layer, and the upside of A retort and B retort sets up the cooling water outlet pipe 20 that communicates the cooling intermediate layer. And the cooling water inlet pipe 19 and the cooling water outlet pipe 20 are both provided with valves.
The feeding pipe 7 extends into the port at the bottom of the metal hydride storage tank 1 and is a horn-shaped suction inlet, so that the material can be sucked conveniently. The suction inlet pipe 9 extends into two ports at the bottoms of the reaction tanks A and B4 and 5 and is a horn-shaped suction inlet, so that the material suction is convenient. The adding communicating pipe 11 extends into the bottom of the metal hydride storage tank 1, and the sucking communicating pipe extends into the bottom of the reaction tank, so that materials can be fluidized conveniently, and pneumatic conveying is facilitated.
The reaction water inlet pipe 21 supplies reaction water in a drip irrigation wetting mode; the reaction water inlet pipe 21 is evenly provided with drippers along the inner tank wall of the reaction tank, and the drippers are connected with the reaction water inlet pipe through a ring pipe.
The outlet of the rotary valve is provided with a metering device for accurately metering the amount of the material. The rotary valve is provided with a protective cover and is placed in a nitrogen atmosphere to prevent air from mixing into the system and to simultaneously remove heat dissipated by the rotary valve from the system. The system is provided with a reversing valve to realize the switching or reversing of the materials and the conveying gas. The reaction tank adopts a water cooling mode to control the reaction speed, and adopts a drip irrigation wetting reaction water supply mode to control the reaction speed. The reaction tank is provided with a moisture drying device which can thoroughly dry the metal hydride so as to ensure that no moisture is contained before pumping. The gas-using equipment can be a hydrogen fuel automobile, a high-speed rail, a lorry, a warship, an airplane, aviation equipment, a tank, an armored vehicle, a civil ship, engineering machinery, a temperature regulating system of clothes, a power system of shoes, household appliances or a mobile phone and the like.
The system for preparing hydrogen by using metal hydride has the following operation modes:
(1) initial state: the metal hydride storage tank 1, the metal hydride depleted storage tank 2, the A reaction tank 4 and the B reaction tank 5 are empty and have no materials.
(2) The metal hydride storage tank 1 is filled with the metal hydride through the filling nozzle 26, and the storage tank is filled.
(3) The A reversing valve 13 is switched to the adding feed pipe 7 to enable the metal hydride storage tank 1 to be communicated with the inlet of the rotary valve 3, the B reversing valve 14 is switched to the adding discharge pipe 8, the C reversing valve 15 is switched to the A reaction tank 4 to enable the outlet of the rotary valve 3 to be communicated with the A reaction tank 4, the E reversing valve 17 is switched to the A reaction tank 4 to enable the A reaction tank 4 to be communicated with the metal hydride storage tank 1 in a gas phase mode, the rotary valve 3 is opened, the metal hydride is added to the A reaction tank 4 from the metal hydride storage tank 1, the amount of the metal hydride is measured through the measuring device 6, and the rotary valve 3 is closed after the adding is.
The A reversing valve 13 is switched to the adding feed pipe 7 to enable the metal hydride storage tank 1 to be communicated with the inlet of the rotary valve 3, the B reversing valve 14 is switched to the adding discharge pipe 8, the C reversing valve 15 is switched to the B reaction tank 5 to enable the outlet of the rotary valve 3 to be communicated with the B reaction tank 5, the E reversing valve 17 is switched to the B reaction tank 5 to enable the B reaction tank 5 to be communicated with the metal hydride storage tank 1 in a gas phase mode, the rotary valve 3 is opened, the metal hydride is added to the B reaction tank 5 from the metal hydride storage tank 1, the amount of the metal hydride is measured through the measuring device 6, and the rotary valve 3 is closed after the adding is.
(4) When the metal hydride is added into the reaction tank B5, a cooling water inlet valve and a cooling water outlet valve of the reaction tank A4 are opened, and the cooling interlayer is filled with water; and then the valve on the reaction water inlet pipe 21 is opened to supply reaction water into the A reaction tank 4, the water reacts with the metal hydride in the A reaction tank 4 to generate metal hydroxide and hydrogen, the released hydrogen supplies hydrogen to downstream gas utilization equipment through a hydrogen conveying pipe 24, and when hydrogen release is finished, the valve on the reaction water inlet pipe 21 and the interlayer cooling water inlet valve are closed simultaneously.
(5) After the reaction of the reaction tank A4 is finished, the moisture drying device 22 is started to dry the reacted metal hydride, and when the drying of the metal hydride is finished, the D reversing valve 16 is switched to the reaction tank A4, and the A reversing valve 13 is switched to the suction feed pipe 9, so that the reaction tank A4 is communicated with the inlet of the rotary valve 3; switching the B reversing valve 14 to a suction/discharge pipe 10 to communicate the outlet of the rotary valve 3 with the metal hydride depleted storage tank 2; switching the F-switch valve 18 to the a reaction tank 4 places the metal hydride depleted storage tank 2 in gas phase communication with the a reaction tank 4. The rotary valve 3 is opened, the metal hydride depleted storage tank 2 is pumped from the A reaction tank 4, the amount of the metal hydride depleted storage tank is metered by the metering device 6, and the rotary valve 3 is stopped when the metal hydride depleted storage tank is not.
(6) When the reaction of the reaction tank A is finished or is about to be finished, the cooling water inlet valve and the cooling water outlet valve of the reaction tank B5 are opened, and the cooling interlayer is filled with water; and then the valve on the reaction water inlet pipe 21 is opened to supply reaction water to the B reaction tank 5, the water reacts with the metal hydride in the B reaction tank 5 to generate metal hydroxide and hydrogen, the released hydrogen supplies hydrogen to downstream gas-using equipment through a hydrogen conveying pipe 24, and when the hydrogen release is finished, the valve on the reaction water inlet pipe 21 and the interlayer cooling water inlet valve are closed simultaneously.
(7) The A reversing valve 13 is switched to the adding feed pipe 7 to enable the metal hydride storage tank 1 to be communicated with the inlet of the rotary valve 3, the B reversing valve 14 is switched to the adding discharge pipe 8, the C reversing valve 15 is switched to the A reaction tank 4 to enable the outlet of the rotary valve 3 to be communicated with the A reaction tank 4, the E reversing valve 17 is switched to the A reaction tank 4 to enable the A reaction tank 4 to be communicated with the metal hydride storage tank 1 in a gas phase mode, the rotary valve 3 is opened, the metal hydride is added to the A reaction tank 4 from the metal hydride storage tank 1, the amount of the metal hydride is measured through the measuring device 6, and the rotary valve 3 is closed after the adding is.
(8) After the reaction of the B reaction tank 5 is finished, the moisture drying device 22 is started to dry the reacted metal hydride, and when the drying of the metal hydride is finished, the D reversing valve 16 is switched to the B reaction tank 5, and the A reversing valve 13 is switched to the suction feed pipe 9, so that the B reaction tank 5 is communicated with the inlet of the rotary valve 3; switching the B reversing valve 14 to a suction/discharge pipe 10 to communicate the outlet of the rotary valve 3 with the metal hydride depleted storage tank 2; switching the F change valve 18 to the B reaction tank 5 allows the metal hydride depleted storage tank 2 to be in gas phase communication with the B reaction tank 5. The rotary valve 3 is opened, the metal hydride depleted storage tank 2 is pumped from the B reaction tank 5, the amount of the metal hydride depleted storage tank is metered by the metering device 6, and the rotary valve 3 is stopped when the metal hydride depleted storage tank is not.
(9) The A reversing valve 13 is switched to the adding feed pipe 7 to enable the metal hydride storage tank 1 to be communicated with the inlet of the rotary valve 3, the B reversing valve 14 is switched to the adding discharge pipe 8, the C reversing valve 15 is switched to the B reaction tank 5 to enable the outlet of the rotary valve 3 to be communicated with the B reaction tank 5, the E reversing valve 17 is switched to the B reaction tank 5 to enable the B reaction tank 5 to be communicated with the metal hydride storage tank 1 in a gas phase mode, the rotary valve 3 is opened, the metal hydride is added to the B reaction tank 5 from the metal hydride storage tank 1, the amount of the metal hydride is measured through the measuring device 6, and the rotary valve 3 is closed after the adding is.
(10) Repeating the steps (4) to (9), wherein the A reaction tank 4 and the B reaction tank 5 are sequentially subjected to operations of adding metal hydride, adding water for reaction, discharging hydrogen, drying and extracting the spent metal hydride, thereby ensuring that hydrogen is stably supplied to downstream gas-consuming equipment.
(11) When the metal hydride storage tank 1 is emptied, new metal hydride is added again through the filling muzzle 26, and when the metal hydride-depleted storage tank 2 is full, the metal hydride-depleted storage tank is pumped out of the metal hydride-depleted storage tank through the pumping muzzle 25.
In this embodiment, the reaction water inlet pipe 21 is replaced by any flow-controllable manner to supply reaction water.
The method for replacing the material by the rotary valve 3 and the method for adding and replacing the material in the metal hydride storage tank 1 and the metal hydride depleted storage tank 2 can be replaced by any method including, but not limited to, methods using gravity conveying, mechanical conveying, pneumatic conveying, vacuum conveying, hydraulic conveying, electromagnetic conveying or a combination thereof, so that the material adding or replacing can be reliably realized.
At least one of the metal hydride storage tank 1, the metal hydride depleted storage tank 2, the rotary valve 3, the A reaction tank 4 and the B reaction tank 5 is arranged.
The metal hydride includes, but is not limited to, magnesium hydride, which may be a rare earth metal hydride, a nickel base, a lithium base, etc.
When the environment temperature is low and the ice is likely to freeze, an antifreezing solution can be added into the interlayer cooling water; the A reaction tank 4, the B reaction tank 5, the metal hydride storage tank 1, the spent metal hydride storage tank 2 and all connecting pipelines and valves in the system are all provided with internal heat preservation or external heat preservation or internal and external heat preservation.
Claims (8)
1. A system for preparing hydrogen by metal hydride is characterized in that: the device comprises a metal hydride storage tank (1), a spent metal hydride storage tank (2), a rotary valve (3), an A reaction tank (4), a B reaction tank (5), a metering device (6), an adding feed pipe (7), an adding discharge pipe (8), a suction feed pipe (9), a suction discharge pipe (10), an adding communicating pipe (11), a suction communicating pipe (12), an A reversing valve (13), a B reversing valve (14), a C reversing valve (15), a D reversing valve (16), an E reversing valve (17), an F reversing valve (18), a cooling water inlet pipe (19), a cooling water outlet pipe (20), a reaction water inlet pipe (21), a moisture drying device (22) and a hydrogen output pipe (24); the A reaction tank (4), the B reaction tank (5), the metal hydride storage tank (1) and the spent metal hydride storage tank (2) are all sealed tank bodies; the inlet of the rotary valve (3) is provided with a reversing valve A (13), and the outlet of the rotary valve (3) is provided with a metering device (6) and a reversing valve B (14);
the bottom of the metal hydride storage tank (1) is connected to an A reversing valve (13) of a rotary valve inlet through an addition feeding pipe (7); a B reversing valve (14) at the outlet of the rotary valve is respectively connected with the tops of the A reaction tank (4) and the B reaction tank (5) through an adding discharge pipe (8) and a C reversing valve (15); the tops of the reaction tank A (4) and the reaction tank B (5) are respectively connected to the bottom of the metal hydride storage tank (1) through an addition communicating pipe (11) by an E reversing valve (17);
the bottoms of the reaction tank A (4) and the reaction tank B (5) are respectively connected with a reversing valve A (13) at the inlet of the rotary valve through a suction feed pipe (9) by a reversing valve D (16), a reversing valve B (14) at the outlet of the rotary valve is connected to the top of the spent metal hydride storage tank (2) through a suction discharge pipe (10), and the top of the spent metal hydride storage tank (2) is respectively communicated with the bottoms of the reaction tank A (4) and the reaction tank B (5) through a suction communicating pipe (12) and a reversing valve F (18);
the reaction tank A (4) and the reaction tank B (5) are respectively provided with a reaction water inlet pipe (21) communicated to the bottom, and the reaction tank A (4) and the reaction tank B (5) are provided with a moisture drying device (22); the tops of the reaction tank A (4) and the reaction tank B (5) are provided with hydrogen output pipes (24);
the lateral wall of A retort (4) and B retort (5) sets up the cooling intermediate layer, and the below of A retort (4) and B retort (5) sets up the cooling water inlet tube (19) that communicate the cooling intermediate layer, and the upside of A retort (4) and B retort (5) sets up the cooling water outlet pipe (20) that communicate the cooling intermediate layer.
2. The system for producing hydrogen from metal hydride as claimed in claim 1, wherein: the moisture drying devices (22) of the reaction tank A (4) and the reaction tank B (5) are internally provided with electric heating devices or self-heating or other heating modes.
3. The system for producing hydrogen from metal hydride as claimed in claim 1, wherein: the rotary valve (3) is provided with a protective cover (23) filled with nitrogen or inert gas.
4. The system for producing hydrogen from metal hydride as claimed in claim 1, wherein: and the cooling water inlet pipe (19), the cooling water outlet pipe (20) and the reaction water inlet pipe (21) are provided with valves.
5. The system for producing hydrogen from metal hydride as claimed in claim 1, wherein: the feeding pipe (7) extends into the port at the bottom of the metal hydride storage tank (1) and is a horn-shaped suction inlet, so that the feeding is facilitated; the suction feed pipe (9) extends into two ports at the bottoms of the reaction tank A (4) and the reaction tank B (5) and is a horn-shaped suction inlet, so that the suction is convenient; the adding communicating pipe (11) extends into the bottom of the metal hydride storage tank, and the sucking communicating pipe extends into the bottoms of the reaction tank A (4) and the reaction tank B (5), so that materials can be fluidized conveniently, and pneumatic conveying is facilitated.
6. The system for producing hydrogen from metal hydride as claimed in claim 1, wherein: the reaction water inlet pipe (21) supplies reaction water in a drip irrigation wetting mode; the reaction water inlet pipe (21) is uniformly provided with drippers along the inner side tank walls of the A reaction tank (4) and the B reaction tank (5), and the drippers are connected with the reaction water inlet pipe through a radial ring pipe.
7. The system for producing hydrogen from metal hydride as claimed in claim 1, wherein: at least one of the metal hydride storage tank (1), the metal hydride depleted storage tank (2), the rotary valve (3), the A reaction tank (4) and the B reaction tank (5) is arranged.
8. The system for producing hydrogen from metal hydride as claimed in claim 1, wherein: when the ambient temperature is low, adding an antifreezing solution into the interlayer cooling water; the reaction tank A (4), the reaction tank B (5), the metal hydride storage tank (1), the spent metal hydride storage tank (2) and all connecting pipelines and valves in the system are all provided with internal heat preservation or external heat preservation or internal and external heat preservation.
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|---|---|---|---|---|
| US20050022883A1 (en) * | 2003-07-29 | 2005-02-03 | Paul Adams | Fuel cartridge with connecting valve |
| CN108883931A (en) * | 2016-03-22 | 2018-11-23 | 南洋理工大学 | Hydrogen-producing machine |
| CN106969259A (en) * | 2017-03-16 | 2017-07-21 | 石家庄新华能源环保科技股份有限公司 | Method and change station that a kind of metal hydride is changed |
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| CN109437101A (en) | 2019-03-08 |
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