CN218709199U - Molten metal magnesium liquid purification hydrogen device - Google Patents
Molten metal magnesium liquid purification hydrogen device Download PDFInfo
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- CN218709199U CN218709199U CN202222930571.8U CN202222930571U CN218709199U CN 218709199 U CN218709199 U CN 218709199U CN 202222930571 U CN202222930571 U CN 202222930571U CN 218709199 U CN218709199 U CN 218709199U
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Abstract
The utility model provides a molten metal magnesium liquid purification hydrogen device, which comprises a magnesium liquid chamber, wherein molten magnesium liquid is arranged in the magnesium liquid chamber, a hydrogen discharge channel and a crude hydrogen gas inlet pipe for introducing crude hydrogen into the molten magnesium liquid are arranged on the magnesium liquid chamber, and the lower end of the crude hydrogen gas inlet pipe is inserted into the molten magnesium liquid; and a heating device is arranged outside the magnesium liquid chamber, and the hydrogen discharge channel is connected with the cooling and dust removing module. The utility model realizes the purification of hydrogen through the molten magnesium liquid, and the molten magnesium liquid can remove CO, CO2, NH3, H2S, N2, O2, water vapor and other impurity gases in the hydrogen, thereby obtaining high-purity hydrogen; the magnesium metal is common metal, is easy to obtain and low in price, and can still be continuously used as magnesium metal after crude hydrogen is washed, settled and filtered to remove impurities; the device of the utility model is simple in structure, the device cost is low, and simple process does not consume expensive material, and the cost of the purification processing of greatly reduced crude hydrogen is fit for large-scale hydrogen purification.
Description
Technical Field
The utility model relates to a hydrogen purification technical field, in particular to molten metal magnesium liquid purifies purification hydrogen device.
Background
Hydrogen gas requires high purity when used in fuel cell power generation or in certain application scenarios, such as specialty gas for the semiconductor industry. Crude hydrogen prepared by the traditional industrial method contains impurities such as CO, CO2, NH3, H2S, N2, O2, water vapor and the like, and needs to be thoroughly removed; even in the traditional industries of ammonia synthesis, methanol synthesis, hydrogen for refineries, metallurgical ceramic glass and the like, certain requirements are also made on the purity of the hydrogen.
In the prior art, various kinds of impurities in hydrogen are usually removed by a method combining various means, for example, CO removal by methanation reaction, pressure swing adsorption, polymer membrane separation, cryogenic separation at low temperature, palladium membrane and other various technical means are combined to specifically remove various impurities in hydrogen to obtain high-purity hydrogen.
However, the existing hydrogen purification means is cooperatively performed by combining a plurality of means in a cascade manner, and has the disadvantages of complex process and device, high device manufacturing cost and high treatment cost, and is not suitable for large-scale production.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provide a molten metal magnesium liquid hydrogen purification device.
The utility model aims at realizing through the following technical scheme: a molten metal magnesium liquid purification hydrogen purification device comprises a magnesium liquid chamber, wherein molten magnesium liquid is filled in the magnesium liquid chamber, a hydrogen discharge channel and a crude hydrogen inlet pipe for introducing crude hydrogen into the molten magnesium liquid are arranged on the magnesium liquid chamber, and the lower end of the crude hydrogen inlet pipe is inserted into the molten magnesium liquid; and a heating device is arranged outside the magnesium liquid chamber, and the hydrogen discharge channel is connected with the cooling and dust removing module.
Preferably, the lower end of the crude hydrogen inlet pipe is provided with a porous distribution plate.
Preferably, the heating device is a heating chamber arranged outside the magnesium liquid chamber, one side of the heating chamber is provided with a gas inlet and a combustion air inlet, and the other side of the heating chamber is provided with an exhaust port.
Preferably, the heating chamber is provided with baffle plates which are arranged in a staggered way and form a circuitous combustion channel in the heating chamber.
Preferably, the cooling and dust removing module comprises a first cooling chamber and a second cooling chamber, an air inlet on the first cooling chamber is connected with the hydrogen gas discharge channel, and an air outlet on the first cooling chamber is connected with an air inlet on the second cooling chamber through a connecting pipe; the outer sides of the first cooling chamber and the second cooling chamber are respectively provided with a first cold water jacket and a second cold water jacket, and the first cooling chamber and the second cooling chamber are respectively internally provided with a first cooling heat exchanger and a second cooling heat exchanger.
Preferably, the cooling dust removal module further comprises a fine dust remover, and an air outlet on the second cooling chamber is connected with an air inlet on the fine dust remover.
Preferably, a first ash discharge valve is arranged at the lower end of the first cooling chamber, and a first ash hopper is arranged below the first ash discharge valve; and a second ash discharge valve is arranged at the lower end of the second cooling chamber, and a second ash bucket is arranged below the second ash discharge valve.
Preferably, a cooling water cavity is formed between the first cooling water jacket and the outer side of the first cooling chamber, and the first cooling water jacket is provided with a first water inlet and a first water outlet; and a cooling water cavity is formed between the second cooling water jacket and the outer side of the second cooling chamber, and a second water inlet and a second water outlet are formed in the second cooling water jacket.
The utility model has the advantages that: the utility model realizes the purification of hydrogen through single molten magnesium liquid, and the molten magnesium liquid can remove CO, CO2, NH3, H2S, N2, O2, water vapor and other impurity gases in the hydrogen, thereby obtaining high-purity hydrogen; the magnesium metal is a common metal, is easy to obtain and low in price, and can still be continuously used as the magnesium metal after crude hydrogen is washed, settled and filtered to remove impurities. The device of the utility model is simple in structure, the device cost is low, and simple process does not consume expensive material, and greatly reduced comes the cost that hydrogen purification handled, is fit for large-scale hydrogen purification.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 101. the device comprises a magnesium liquid chamber, 102, molten magnesium liquid, 103, a heating chamber, 104, a fuel gas inlet, 105, a combustion air inlet, 106, an exhaust port, 107, a baffle plate, 201, a crude hydrogen gas inlet pipe, 202, a porous distribution plate, 203, crude hydrogen gas, 204, high-purity hydrogen gas, 210, pure hydrogen gas, 211, a hydrogen gas discharge channel, 301, a first cooling chamber, 302, a first cold water jacket, 303, a first water inlet, 304, a first water outlet, 305, a first cooling heat exchanger, 306, a first ash discharge valve, 307, first ash deposit, 308, a first ash bucket, 311, a second cooling chamber, 312, a second cold water jacket, 313, a second water inlet, 314, a second water outlet, 315, a second cooling heat exchanger, 316, a second ash discharge valve, 317, second ash deposit, 318, a second ash bucket, 401, a fine dust remover, 402, a hydrogen gas compressor, 403 and a high-pressure hydrogen storage tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning "at least one" or "one or more," i.e., that a quantity of one element may be one in one embodiment, while a quantity of another element may be plural in other embodiments, and the terms "a" and "an" should not be interpreted as limiting the quantity.
As shown in fig. 1, the apparatus for purifying hydrogen from molten magnesium metal comprises a magnesium liquid chamber 101, wherein the magnesium liquid chamber 101 is a sealed metal container, molten magnesium liquid 102 is contained in the magnesium liquid chamber 101, and a heating device is arranged outside the magnesium liquid chamber 101 and used for heating the molten magnesium liquid in the magnesium liquid chamber 101 so as to keep the temperature of the molten magnesium liquid 102 between 700 and 900 ℃.
Wherein, the heating device is a heating chamber 103 arranged outside the magnesium liquid chamber 101, one side of the heating chamber 103 is provided with a fuel gas inlet 104 and a combustion air inlet 105, and the other side of the heating chamber 103 is provided with an exhaust port 106; the heating chamber 103 is provided with baffles 107, and the baffles 107 are arranged in a staggered manner and form a circuitous combustion channel in the heating chamber 103. Gas and combustion-supporting air are respectively introduced into the heating chamber 103 from a gas inlet 104 and a combustion-supporting air inlet 105, and the gas and the combustion-supporting air are combusted in the heating chamber, so that molten magnesium 102 in the magnesium liquid chamber 101 is heated, and the temperature of the molten magnesium is maintained; the combustion gas passes through the circuitous combustion path and is exhausted from the exhaust port 106. The circuitous combustion channel can improve the retention time of the combustion gas in the heating chamber and improve the heating efficiency.
The magnesium liquid chamber 101 is provided with a hydrogen discharge channel and a crude hydrogen gas inlet 201 for introducing crude hydrogen into the molten magnesium liquid, wherein the hydrogen discharge channel is arranged at the upper end of the magnesium liquid chamber 101, the crude hydrogen gas inlet pipe 201 vertically penetrates through the upper end of the magnesium liquid chamber 101, and the lower end of the crude hydrogen gas inlet pipe 201 is inserted into the molten magnesium liquid 102. The hydrogen discharge channel is connected with the cooling dust removal module. The lower end of the crude hydrogen inlet pipe 201 is provided with a porous distribution plate 202. The fine holes are distributed on the porous distribution plate 202.
Introducing crude hydrogen 203 to be purified from the upper end of a crude hydrogen inlet pipe 201, and then entering the molten magnesium 102 from a pipe orifice at the lower end of the crude hydrogen inlet pipe 201; after passing through the porous distribution plate 202, the crude hydrogen 203 forms fine bubbles to increase the contact area of the crude hydrogen and the molten magnesium 102; after the impurity gas in the crude hydrogen 203 reacts with the high-temperature molten magnesium, the impurities in the crude hydrogen 203 are fully reacted and absorbed by the molten magnesium to form high-purity hydrogen 204 with high temperature.
The high-purity hydrogen 204 is discharged from the hydrogen discharge channel and enters the cooling and dust removing module, and the high-purity hydrogen is subjected to subsequent treatment through the cooling and dust removing module.
When the crude hydrogen 203 passes through the molten magnesium 102, the impurity gases CO, CO2, NH3, H2S, N2, and water vapor in the crude hydrogen react with the molten magnesium at a high temperature as follows:
carbon monoxide CO reacts with molten magnesium bath to produce magnesium oxide and carbon as follows:
Mg+CO＝MgO+C
hydrogen sulfide H2S reacts with molten magnesium as follows to produce magnesium sulfide and hydrogen:
Mg+H 2 S＝MgS+H 2 ↑
the ammonia NH3 reacts with the molten magnesium bath to produce magnesium nitride and hydrogen as follows:
3Mg+2NH 3 ＝Mg 3 N 2 +3H 2 ↑
the nitrogen N2 reacts with the high-temperature molten magnesium liquid to generate magnesium nitride as follows:
3Mg+N 2 ＝Mg 3 N 2
the water vapor reacts with the molten magnesium bath to produce magnesium oxide and hydrogen as follows:
Mg+H 2 O＝MgO+H 2 ↑
carbon dioxide CO2 reacts with the molten magnesium bath to produce magnesium oxide and carbon as follows:
2Mg+CO 2 ＝2MgO+C
the oxygen reacts with the molten magnesium bath at high temperature and produces magnesium oxide:
2Mg+O 2 ＝2MgO
the MgO, mgS, mg3N2, and the like generated after the above-mentioned impurity gas in the crude hydrogen gas 203 reacts with the molten magnesium 102 are all solids, and all settle at the bottom of the molten magnesium 102 or are partially dissolved in the molten magnesium 102.
After the impurity gas in the crude hydrogen 203 is reacted with the molten magnesium, the impurity gas is removed, and thus high-purity hydrogen 204 with high temperature is obtained.
Because the high-purity hydrogen 204 has a high temperature and a certain amount of impurities such as magnesium vapor and solid dust are mixed in the high-purity hydrogen 204, the high-purity hydrogen 204 needs to be cooled and dedusted by the cooling and dedusting module.
The cooling and dust removing module comprises a first cooling chamber 301, a second cooling chamber 311 and a fine dust remover 401, wherein the first cooling chamber 301 and the second cooling chamber 311 are both steel containers, an air inlet on the first cooling chamber 301 is connected with a hydrogen gas discharge channel, an air outlet on the first cooling chamber 301 is connected with an air inlet on the second cooling chamber 311 through a connecting pipe, and an air outlet on the second cooling chamber 311 is connected with an air inlet on the fine dust remover 401. The first cooling chamber 201 and the second cooling chamber 311 are respectively provided with a first cold water jacket 302 and a second cold water jacket 312 on the outer sides thereof. Wherein, first cold water cover 302 cover is in the outside of first cooling chamber 301, and forms the cooling water cavity between the outside of first cooling chamber 301, is equipped with first water inlet 303 and first drain 304 on the first cold water cover 301, and the cooling water lets in the cooling water cavity through first water inlet 303 to discharge through first drain 304, cool off the outer wall of first cooling chamber through the cooling water. A cooling water cavity is formed between the second cooling water jacket 312 and the outer side of the second cooling chamber 311, and a second water inlet 313 and a second water outlet 314 are arranged on the second cooling water jacket 312; the cooling water is introduced into the cooling water chamber through the second water inlet 313 and discharged through the second water outlet 314, and the outer wall of the second cooling chamber is cooled by the cooling water. The first cooling chamber 301 and the second cooling chamber 311 are provided therein with a first cooling heat exchanger 305 and a second cooling heat exchanger 315, respectively. The first cooling heat exchanger 305 and the second cooling heat exchanger 315 are both prior art, and the first cooling heat exchanger 305 and the second cooling heat exchanger 315 are used for cooling the gas in the first cooling chamber and the second cooling chamber, respectively. A first ash discharge valve 306 is arranged at the lower end of the first cooling chamber 301, and a first ash hopper 308 is arranged below the first ash discharge valve 306; a second ash discharge valve 316 is disposed at the lower end of the second cooling chamber 311, and a second ash bucket 318 is disposed below the second ash discharge valve 316.
High-temperature high-purity hydrogen 204 firstly enters a first cooling chamber 301, the high-purity hydrogen 304 is subjected to primary cooling and dust removal in the first cooling chamber 204, magnesium vapor mixed in the gas is cooled to form magnesium micro powder after the gas is introduced into the first cooling chamber, the magnesium micro powder and the rest solid dust are subjected to primary precipitation in the first cooling chamber, and first dust 307 is formed at the bottom in the first cooling chamber 301 after the precipitation; the first ash deposit at the bottom of the first cooling chamber 301 is dropped into the first ash hopper 308 by periodically opening the first ash discharge valve 306.
The high-purity hydrogen 204 subjected to the primary cooling and dust removal is continuously introduced into the second cooling chamber 311, and the high-purity hydrogen 204 is subjected to secondary cooling and dust removal in the second cooling chamber 311 in the same process as in the first cooling chamber 301; second soot 317 is formed at the bottom of the second cooling chamber 311, and the second soot at the bottom of the second cooling chamber 311 is dropped into a second soot hopper 318 by periodically opening the first soot-discharging valve 316. Since the main components of the first deposition ash 317 and the second deposition ash 318 are the magnesium micro powder formed after the magnesium vapor is cooled, after the first deposition ash 317 and the second deposition ash 318 are collected and the magnesium micro powder in the first deposition ash 317 and the second deposition ash 318 is collected, the magnesium micro powder can be reused or replenished into the molten magnesium solution 102.
The high-purity hydrogen 204 can enter the fine dust collector 401 after passing through the first cooling chamber 301 and the second cooling chamber 311, the fine dust collector 401 can perform high-efficiency dust collection on the high-purity hydrogen 204 again, the fine dust collector 401 comprises multiple layers of filter bags, and multiple filtering dust collection can be performed on the high-purity hydrogen 204, so that the pure hydrogen 210 is obtained. The purified hydrogen gas 210 is pressurized by the hydrogen compressor 402 and then stored in the high-pressure hydrogen storage tank 403.
The utility model realizes the purification of hydrogen through single molten magnesium liquid, and the molten magnesium liquid can remove CO, CO2, NH3, H2S, N2, O2, water vapor and other impurity gases in the hydrogen, thereby obtaining high-purity hydrogen; the magnesium metal is common metal, is easy to obtain and low in price, and can be continuously used as the magnesium metal after crude hydrogen is washed, settled and filtered to remove impurities. The device of the utility model is simple in structure, the device cost is low, and simple process does not consume expensive material, greatly reduced the cost that hydrogen purification was handled, be fit for large-scale hydrogen purification.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.
Claims (8)
1. A molten metal magnesium liquid purification hydrogen purification device is characterized by comprising a magnesium liquid chamber, wherein molten magnesium liquid is filled in the magnesium liquid chamber, a hydrogen discharge channel and a crude hydrogen inlet pipe for introducing crude hydrogen into the molten magnesium liquid are arranged on the magnesium liquid chamber, and the lower end of the crude hydrogen inlet pipe is inserted into the molten magnesium liquid; and a heating device is arranged outside the magnesium liquid chamber, and the hydrogen discharge channel is connected with the cooling and dust removing module.
2. The apparatus of claim 1, wherein a porous distribution plate is disposed at the lower end of the crude hydrogen inlet pipe.
3. The apparatus of claim 1, wherein the heating means is a heating chamber disposed outside the magnesium bath, one side of the heating chamber is provided with a gas inlet and a combustion air inlet, and the other side of the heating chamber is provided with an exhaust port.
4. A molten magnesium metal purifying hydrogen generator as claimed in claim 3, wherein the heating chamber is provided with baffles which are staggered and form a circuitous combustion channel in the heating chamber.
5. The device for purifying hydrogen by molten magnesium metal according to claim 1, wherein the cooling and dust removal module comprises a first cooling chamber and a second cooling chamber, a gas inlet on the first cooling chamber is connected with the hydrogen discharge channel, and a gas outlet on the first cooling chamber is connected with a gas inlet on the second cooling chamber through a connecting pipe; the outer sides of the first cooling chamber and the second cooling chamber are respectively provided with a first cold water jacket and a second cold water jacket, and the first cooling chamber and the second cooling chamber are respectively internally provided with a first cooling heat exchanger and a second cooling heat exchanger.
6. The apparatus of claim 5, wherein the cooling and dust-removing module further comprises a fine dust collector, and an air outlet of the second cooling chamber is connected to an air inlet of the fine dust collector.
7. The apparatus for purifying hydrogen from molten magnesium metal according to claim 5, wherein a first ash valve is provided at the lower end of the first cooling chamber, and a first ash bucket is provided below the first ash valve; and a second ash discharge valve is arranged at the lower end of the second cooling chamber, and a second ash hopper is arranged below the second ash discharge valve.
8. The apparatus according to claim 5, wherein a cooling water cavity is formed between the first cooling water jacket and the outside of the first cooling chamber, and the first cooling water jacket is provided with a first water inlet and a first water outlet; and a cooling water cavity is formed between the second cooling water jacket and the outer side of the second cooling chamber, and a second water inlet and a second water outlet are formed in the second cooling water jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222930571.8U CN218709199U (en) | 2022-11-01 | 2022-11-01 | Molten metal magnesium liquid purification hydrogen device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222930571.8U CN218709199U (en) | 2022-11-01 | 2022-11-01 | Molten metal magnesium liquid purification hydrogen device |
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| Publication Number | Publication Date |
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| CN218709199U true CN218709199U (en) | 2023-03-24 |
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| CN202222930571.8U Active CN218709199U (en) | 2022-11-01 | 2022-11-01 | Molten metal magnesium liquid purification hydrogen device |
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