CN210620238U - Hydrogen recovery device - Google Patents
Hydrogen recovery device Download PDFInfo
- Publication number
- CN210620238U CN210620238U CN201921384746.1U CN201921384746U CN210620238U CN 210620238 U CN210620238 U CN 210620238U CN 201921384746 U CN201921384746 U CN 201921384746U CN 210620238 U CN210620238 U CN 210620238U
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- CN
- China
- Prior art keywords
- hydrogen
- adsorption
- desorption
- switching valve
- dehydrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 114
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 114
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 238000011084 recovery Methods 0.000 title claims abstract description 25
- 238000003795 desorption Methods 0.000 claims abstract description 47
- 238000001179 sorption measurement Methods 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 34
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- 238000005406 washing Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 8
- 230000002441 reversible effect Effects 0.000 claims abstract description 4
- 238000005201 scrubbing Methods 0.000 claims description 5
- 239000002808 molecular sieve Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 description 10
- 239000011358 absorbing material Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 150000002431 hydrogen Chemical class 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002336 sorption--desorption measurement Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses a hydrogen recovery device, which comprises an air inlet pipe, a gas washing tower, a deaerator, a dehydrator, a hydrogen adsorption and desorption device, a filter, a switching valve and a tail gas pipe; the air inlet pipe, the gas washing tower, the deaerator, the dehydrator and the hydrogen adsorption and desorption device are sequentially connected through pipelines; the hydrogen adsorption and desorption device is internally provided with reversible hydrogen absorption materials; the inlet of the hydrogen adsorption and desorption device is provided with a switching valve, the outlet of the hydrogen adsorption and desorption device is connected with a tail gas pipe and a filter, and the switching valve is arranged on the tail gas pipe and the inlet of the filter. The hydrogen recovery device has high purity of recovered hydrogen and high recovery efficiency.
Description
Technical Field
The utility model relates to a hydrogen recovery unit belongs to the hydrogen field of retrieving.
Background
Hydrogen is widely used in various industries as one of the most potential new energy sources. Due to the flammable and explosive nature of hydrogen and the extreme difficulty of liquefying, the transportation and storage requirements for hydrogen are high and the price of ultra-pure hydrogen gas is very expensive. At present, in the LED industry, because production equipment has a low hydrogen utilization rate, production tail gas contains a large amount of hydrogen, and the tail gas also contains a certain amount of ammonia, nitrogen, trace organic matters, dust and other impurities, the general treatment method for the hydrogen-containing waste gas is directly discharged into the atmosphere, the hydrogen is not recovered, the resource waste is caused, and the enterprise cost is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a hydrogen recovery unit.
The utility model provides a technical scheme that its technical problem adopted is:
a hydrogen recovery device comprises an air inlet pipe, a gas washing tower, a deaerator, a dehydrator, a hydrogen adsorption and desorption device, a filter, a switching valve and a tail gas pipe; the air inlet pipe, the gas washing tower, the deaerator, the dehydrator and the hydrogen adsorption and desorption device are sequentially connected through pipelines; the hydrogen adsorption and desorption device is internally provided with reversible hydrogen absorption materials; the inlet of the hydrogen adsorption and desorption device is provided with a switching valve, the outlet of the hydrogen adsorption and desorption device is connected with a tail gas pipe and a filter, and the switching valve is arranged on the tail gas pipe and the inlet of the filter.
Preferably, the hydrogen adsorption and desorption devices are arranged in parallel in a plurality of groups.
Preferably, the number of the sets of the hydrogen adsorption and desorption devices is two.
Preferably, a suction fan and a pressurizing pump are further installed on a pipeline between the scrubbing tower and the deaerator.
Preferably, the number of the groups of the water removers is two, and the two groups of the water removers are arranged in parallel.
Preferably, the dehydrator is an adsorption device with molecular sieve packing inside.
Preferably, the scrubber is a packed column or a tray column or a bubble column.
Compared with the background technology, the technical scheme has the following advantages:
the utility model discloses hydrogen recovery unit includes intake pipe, scrubbing tower, oxygen-eliminating device, dehydrator, hydrogen adsorption and desorption device, filter, diverter valve and tail gas pipe. The hydrogen-containing waste gas is firstly passed through a gas-washing tower to remove dust, acid and alkaline components contained in the gas, and then passed through a deaerator to remove oxygen in the waste gas. After the oxygen is removed, most of oxygen in the waste gas is removed, and the oxygen is prevented from influencing the subsequent hydrogen absorbing material. And the waste gas after deoxygenation enters a water removal device, and enters a hydrogen adsorption and desorption device after most of water is removed. When the switching valve at the air inlet of the hydrogen adsorption and desorption device is opened, the switching valve on the corresponding tail gas pipe is opened, and the corresponding switching valve connected with the inlet of the filter is closed, the hydrogen adsorption and desorption device is in an adsorption state. When the switching valve at the air inlet of the hydrogen adsorption and desorption device is closed, the corresponding switching valve on the tail gas pipe is closed, and the corresponding switching valve connected with the inlet of the filter is opened, the hydrogen adsorption and desorption device is in a desorption state, the desorbed hydrogen enters the filter, and the filter removes a small amount of hydrogen absorption materials carried in the gas to obtain the high-purity hydrogen. In the hydrogen adsorbing device, since the hydrogen absorbing material has an adsorbing effect only on hydrogen, hydrogen is absorbed by the hydrogen absorbing material, and other components are not absorbed. In the subsequent desorption process, the adsorbed hydrogen is desorbed, and the desorbed hydrogen can reach high purity because the hydrogen absorbing material does not absorb other components, thereby meeting the production requirement, being capable of recycling, saving resources and reducing the enterprise cost.
The hydrogen adsorption and desorption devices are arranged in parallel, one part of the hydrogen adsorption and desorption devices can be in an adsorption state and the other part of the hydrogen adsorption and desorption devices can be in a desorption state through switching of the switching valve, so that the hydrogen recovery device can continuously prepare high-purity hydrogen, and the hydrogen recovery efficiency is high.
Drawings
Fig. 1 is a schematic view of the hydrogen recovery device of the present invention.
Reference numerals:
the device comprises a gas washing tower 1, an exhaust fan 2, a pressure pump 3, a deaerator 4, a dehydrator 5, a hydrogen absorption and desorption device 6, a switching valve 7, a filter 8, a tail gas pipe 9 and an air inlet pipe 10.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the perspective views of the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, the utility model provides a hydrogen recovery device, including intake pipe 10, scrubbing tower 1, oxygen-eliminating device 4, dehydrator 5, hydrogen adsorption and desorption device 6, filter 8, diverter valve 7 and tail-gas line 9. The air inlet pipe 1, the gas washing tower 1, the deaerator 4, the dehydrator 5 and the hydrogen adsorption and desorption device 6 are connected in sequence through pipelines; the hydrogen adsorption and desorption device 6 is internally provided with reversible hydrogen absorption materials; the inlet of the hydrogen adsorption and desorption device 6 is provided with a switching valve 7, the outlet of the hydrogen adsorption and desorption device 6 is connected with a tail gas pipe 9 and a filter 8, and the switching valve 7 is arranged on the tail gas pipe 9 and the inlet of the filter 8.
When the hydrogen recovery device works, the hydrogen-containing waste gas firstly enters the gas washing tower 1 through the gas inlet pipe 10 to remove dust, acid and alkaline components contained in the gas, and then oxygen in the waste gas is removed through the deaerator 4. After the oxygen is removed, most of oxygen in the waste gas is removed, so that the oxygen can be prevented from influencing the subsequent hydrogen absorbing material. The waste gas after being deoxidized enters a water removal device 5, and enters a hydrogen adsorption and desorption device 6 after most of water is removed. When the switching valve 7 at the inlet of the hydrogen adsorption/desorption device 6 is opened, the corresponding switching valve 7 on the exhaust pipe 9 is opened, and the corresponding switching valve 7 at the inlet of the filter 8 is closed, if the hydrogen adsorbing material in the hydrogen adsorption/desorption device 6 is not saturated, the hydrogen adsorption/desorption device 6 is in an adsorption state. When the hydrogen absorption material in the hydrogen absorption and desorption device 6 is saturated with hydrogen, the switching valve 7 at the inlet of the hydrogen absorption and desorption device 6 is closed, the corresponding switching valve 7 on the tail gas pipe 9 is closed, and the corresponding switching valve 8 at the inlet of the filter 8 is opened, the hydrogen absorption and desorption device 6 is in a desorption state, the desorbed hydrogen enters the filter 8, and the filter 8 removes a small amount of hydrogen absorption material carried in the gas to obtain high-purity hydrogen. In the hydrogen adsorption/desorption device 6, since the hydrogen absorbing material has an adsorption effect only on hydrogen, hydrogen is absorbed by the hydrogen absorbing material during the adsorption process, and other components are not absorbed. In the subsequent desorption process, the adsorbed hydrogen is desorbed, and the desorbed hydrogen can reach high purity because the hydrogen absorbing material does not absorb other components, thereby meeting the production requirement, being capable of recycling, saving resources and reducing the enterprise cost.
The hydrogen adsorption and desorption devices 6 are arranged in parallel, and one part of the hydrogen adsorption and desorption devices 6 can be in an adsorption state and the other part of the hydrogen adsorption and desorption devices 6 can be in a desorption state by switching the switching valve 7, so that the hydrogen recovery device can continuously prepare high-purity hydrogen, and the hydrogen recovery efficiency is high.
The number of the hydrogen adsorbing and desorbing devices 6 is two.
Still install air exhauster 2 and force (forcing) pump 3 on the pipeline between this scrubbing tower 1 and this oxygen-eliminating device 4, can accelerate the velocity of flow of hydrogen-containing waste gas in this hydrogen recovery unit, improve hydrogen recovery efficiency.
The number of the groups of the dehydrator 5 is two, and the two groups of the dehydrator 5 are arranged in parallel, so that the dehydration efficiency is improved.
The dehydrator 5 is an adsorption device with molecular sieve packing inside.
The scrubber 1 is a packed column or a plate column or a bubble column.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (7)
1. A hydrogen recovery device is characterized in that: comprises an air inlet pipe, a gas washing tower, a deaerator, a dehydrator, a hydrogen adsorption and desorption device, a filter, a switching valve and a tail gas pipe; the gas washing tower, the deaerator, the dehydrator and the hydrogen adsorption and desorption device are sequentially connected through pipelines; the hydrogen adsorption and desorption device is internally provided with reversible hydrogen absorption materials; the inlet of the hydrogen adsorption and desorption device is provided with a switching valve, the outlet of the hydrogen adsorption and desorption device is connected with a tail gas pipe and a filter, and the switching valve is arranged on the tail gas pipe and the inlet of the filter.
2. The hydrogen recovery device according to claim 1, characterized in that: the hydrogen adsorption and desorption devices are arranged in parallel.
3. The hydrogen recovery device according to claim 2, characterized in that: the number of the hydrogen adsorption and desorption devices is two.
4. The hydrogen recovery device according to claim 1, characterized in that: an exhaust fan and a pressure pump are also arranged on a pipeline between the scrubbing tower and the deaerator.
5. The hydrogen recovery device according to claim 1, characterized in that: the number of the groups of the dehydrator is two, and the two groups of the dehydrator are arranged in parallel.
6. The hydrogen recovery device according to claim 1, characterized in that: the dehydrator is an adsorption device with molecular sieve packing arranged inside.
7. The hydrogen recovery device according to claim 1, characterized in that: the gas washing tower is a packed tower or a plate tower or a bubble cap tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921384746.1U CN210620238U (en) | 2019-08-23 | 2019-08-23 | Hydrogen recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921384746.1U CN210620238U (en) | 2019-08-23 | 2019-08-23 | Hydrogen recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210620238U true CN210620238U (en) | 2020-05-26 |
Family
ID=70758952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921384746.1U Expired - Fee Related CN210620238U (en) | 2019-08-23 | 2019-08-23 | Hydrogen recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210620238U (en) |
-
2019
- 2019-08-23 CN CN201921384746.1U patent/CN210620238U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 |
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| CF01 | Termination of patent right due to non-payment of annual fee |