CN210656146U - Backflow structure for rapidly preparing high-purity hydrogen by hydrogen production device - Google Patents
Backflow structure for rapidly preparing high-purity hydrogen by hydrogen production device Download PDFInfo
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- CN210656146U CN210656146U CN201921739305.9U CN201921739305U CN210656146U CN 210656146 U CN210656146 U CN 210656146U CN 201921739305 U CN201921739305 U CN 201921739305U CN 210656146 U CN210656146 U CN 210656146U
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Abstract
The utility model belongs to the technical field of hydrogen purification, in particular to a reflux structure for a hydrogen production device to rapidly prepare high-purity hydrogen, which comprises an absorber, wherein one end of the absorber is connected with a feed gas afflux pipeline and an emptying pipeline, and the other end is connected with a product outlet pipeline and a downstream emptying pipeline; a return pipeline is connected between the product outlet pipeline and the feed gas afflux pipeline, and a compressor and a return control valve are arranged on the return pipeline. The utility model provides a backflow structure for hydrogen plant prepares high-purity hydrogen fast passes through the compressor with unqualified product gas and flows back to the adsorber entrance, improves conversion gas hydrogen content, reduces start time and power consumption.
Description
Technical Field
The utility model belongs to the technical field of the hydrogen purification, concretely relates to a backflow structure that is used for hydrogen plant to prepare high-purity hydrogen fast.
Background
The existing hydrogen production device of the company adopts methanol to produce hydrogen, and the process flow is that the methanol and desalted water are mixed in a proportion of 50 percent, pressurized by a metering pump, and then subjected to the working procedures of vaporization, overheating, conversion, purification, pressure swing adsorption and purification and the like. The hydrogen production device needs 8 hours from the start of equipment to the achievement of qualified high-purity hydrogen products, mainly is that the equipment needs to utilize nitrogen to replace a pressure swing adsorption tower before starting, and then the hydrogen production device is started after the equipment is qualified.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a backflow structure that is used for hydrogen plant to prepare high-purity hydrogen fast passes through compressor backward flow to adsorber entrance with unqualified product gas, improves conversion gas hydrogen content, reduces start time and power consumption.
The purpose of the utility model is realized like this: a reflux structure for a hydrogen production device to rapidly produce high-purity hydrogen comprises an adsorber, wherein one end of the adsorber is connected with a feed gas inflow pipeline and a vent pipeline, and the other end of the adsorber is connected with a product outlet pipeline and a downstream vent pipeline; hydrogen reversely enters the adsorber through the gas release pipeline and is discharged from the gas release pipeline to activate the adsorber; the raw material gas enters the absorber positively through the raw material gas gathering pipeline and then is output from the product outlet pipeline; a return pipeline is connected between the product outlet pipeline and the feed gas afflux pipeline, and a compressor and a return control valve are arranged on the return pipeline.
Furthermore, a buffer tank is arranged on the gas releasing pipeline.
Further, a venting branch is arranged on the product outlet pipeline.
Furthermore, a plurality of adsorbers are connected in parallel.
Compared with the prior art, the utility model outstanding and profitable technological effect is: a compressor is added on a product outlet pipeline of the absorber, and a pipeline is additionally arranged behind the compressor and flows back to a pressure swing adsorption inlet; after starting up, the product gas is pressurized by the compressor, unqualified product gas is returned to the inlet of the adsorption process by the backflow of the compressor, so that the hydrogen content of the original converted gas at the inlet is increased to 95% at 74%, the purified pressure swing adsorption product outlet directly obtains high-purity hydrogen of more than 99.999%, and the starting-up time and the consumption of methanol and electric power in the starting-up process are reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Reference numerals: 1. an adsorber; 2. the raw material gas is gathered into a pipeline; 3. a return line; 4. an emptying pipeline; 5. a compressor; 6. a reflux control valve; 7. a product outlet line; 8. a down draft line; 9. and a buffer tank.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
A backflow structure for a hydrogen production device to rapidly produce high-purity hydrogen is shown in figure 1 and comprises an absorber 1, wherein one end of the absorber 1 is connected with a raw material gas inlet pipeline 2 and a vent pipeline 4, and the other end of the absorber 1 is connected with a product outlet pipeline 7 and a downstream vent pipeline 8; hydrogen reversely enters the adsorber 1 through the vent pipeline 8 and is discharged from the vent pipeline 4, impurities adsorbed on the adsorber 1 are reversely flushed from the vent pipeline 4, and the adsorber 1 is activated; the raw material gas enters the absorber 1 in the positive direction through the raw material gas gathering pipeline 2, and is output from the product outlet pipeline 7 after absorbing impurities in the raw material gas; product outlet line 7 and feed gas are joined in between the pipeline 2 and are connected with backflow pipeline 3, set up compressor 5 and backward flow control valve 6 on the backflow pipeline 3, return unqualified product gas back to the absorption process entrance through compressor 5 backward flows for the conversion gas hydrogen content originally of entrance can promote.
Wherein, set up buffer tank 9 in the same direction as on the bleeder line 8, set up buffer tank 9 and can play the cushioning effect, protection adsorber 1.
Wherein, the product outlet pipeline 7 is provided with a venting branch.
The number of the adsorbers 1 can be reasonably set according to the flow of the raw material gas, and in the embodiment, the adsorbers 1 are provided with five adsorbers in parallel.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a reflux structure that is used for hydrogen plant to prepare high-purity hydrogen fast which characterized in that: comprises an adsorber, one end of which is connected with a feed gas inlet pipeline and an emptying pipeline, and the other end of which is connected with a product outlet pipeline and a downstream emptying pipeline; hydrogen reversely enters the adsorber through the gas release pipeline and is discharged from the gas release pipeline to activate the adsorber; the raw material gas enters the absorber positively through the raw material gas gathering pipeline and then is output from the product outlet pipeline; a return pipeline is connected between the product outlet pipeline and the feed gas afflux pipeline, and a compressor and a return control valve are arranged on the return pipeline.
2. The reflux structure for a hydrogen plant to rapidly produce high-purity hydrogen according to claim 1, wherein: and a buffer tank is arranged on the forward air release pipeline.
3. The reflux structure for a hydrogen plant to rapidly produce high-purity hydrogen according to claim 1, wherein: and a venting branch is arranged on the product outlet pipeline.
4. The reflux structure for a hydrogen plant to rapidly produce high-purity hydrogen according to claim 1, wherein: the adsorbers are connected in parallel and are provided with a plurality of adsorbers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921739305.9U CN210656146U (en) | 2019-10-16 | 2019-10-16 | Backflow structure for rapidly preparing high-purity hydrogen by hydrogen production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921739305.9U CN210656146U (en) | 2019-10-16 | 2019-10-16 | Backflow structure for rapidly preparing high-purity hydrogen by hydrogen production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210656146U true CN210656146U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921739305.9U Active CN210656146U (en) | 2019-10-16 | 2019-10-16 | Backflow structure for rapidly preparing high-purity hydrogen by hydrogen production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210656146U (en) |
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2019
- 2019-10-16 CN CN201921739305.9U patent/CN210656146U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 317000 No. 755, Dongdu South Road, Linhai City, Taizhou City, Zhejiang Province (for office use only) (self declaration) Patentee after: Zhejiang Haichang Gas Co.,Ltd. Address before: 317000 Southeast of Line A3, Linhai Park, Chemical API Base, Linhai District, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG HAICHANG GAS Co.,Ltd. |
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| CP03 | Change of name, title or address |