CN218523412U - System for simultaneously producing high-pressure hydrogen and liquid hydrogen by utilizing industrial byproduct hydrogen - Google Patents
System for simultaneously producing high-pressure hydrogen and liquid hydrogen by utilizing industrial byproduct hydrogen Download PDFInfo
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- CN218523412U CN218523412U CN202222152975.9U CN202222152975U CN218523412U CN 218523412 U CN218523412 U CN 218523412U CN 202222152975 U CN202222152975 U CN 202222152975U CN 218523412 U CN218523412 U CN 218523412U
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Abstract
The utility model discloses a system for utilize vice hydrogen coproduction of industry to produce high-pressure hydrogen and liquid hydrogen simultaneously belongs to the vice hydrogen utilization technical field of industry. The technical scheme is as follows: the hydrogen purification unit comprises a hydrogen purification unit, wherein a feeding hole of the hydrogen purification unit is connected with a feeding pipeline of the hydrogen purification unit, a discharging hole of the hydrogen purification unit is connected with a discharging pipeline of the hydrogen purification unit, the discharging pipeline of the hydrogen purification unit is connected with the feeding hole of the high-pressure hydrogen unit through the feeding pipeline of the high-pressure hydrogen unit, and the discharging pipeline of the hydrogen purification unit is also connected with the feeding hole of the hydrogen liquefaction unit through the feeding pipeline of the hydrogen liquefaction unit; a discharge port of the high-pressure hydrogen unit is connected with a discharge pipeline of the high-pressure hydrogen unit, and a discharge port of the hydrogen liquefaction unit is connected with a discharge pipeline of the hydrogen liquefaction unit; the discharge hole of the high-pressure hydrogen unit is also connected with the feed inlet of the high-pressure hydrogen unit through a return line. The utility model discloses utilize the vice hydrogen of industry can high-pressure hydrogen of coproduction and liquid hydrogen, realized the new mode of utilization of the vice hydrogen of industry.
Description
Technical Field
The utility model relates to an industry by-product hydrogen utilization technical field, concretely relates to utilize system of industry by-product hydrogen coproduction high pressure hydrogen and liquid hydrogen.
Background
In petrochemical industry and coal chemical industry, a large amount of industrial by-product hydrogen (the volume fraction of the hydrogen in the mixed gas is different from 40% to 99%) is not recovered, and most of the hydrogen is burnt as fuel to a fuel gas pipe network, so that the waste of hydrogen energy is caused. With the national policy support for carbon emission limitation and hydrogen energy, the hydrogen energy industry develops rapidly, and hydrogen purification and high-pressure hydrogen production devices are built in China. Because the density of hydrogen is low, high-pressure hydrogen cost of transportation is high, unsuitable long distance transportation, in order to reduce the cost of transportation, the production and the transportation of liquid hydrogen are carried the schedule gradually, the utility model discloses an utilize the vice hydrogen of industry, creatively propose to utilize the vice hydrogen of industry to come coproduction high-pressure hydrogen and liquid hydrogen.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the system for simultaneously producing high-pressure hydrogen and liquid hydrogen by utilizing industrial by-product hydrogen is provided, a combined production system of the high-pressure hydrogen and the liquid hydrogen is innovatively provided, the high-pressure hydrogen and the liquid hydrogen can be simultaneously produced by utilizing the industrial by-product hydrogen, and a new utilization mode of the industrial by-product hydrogen is realized.
The technical scheme of the utility model is that:
the system for simultaneously producing high-pressure hydrogen and liquid hydrogen by utilizing industrial byproduct hydrogen comprises a hydrogen purification unit, wherein a feed inlet of the hydrogen purification unit is connected with a hydrogen purification unit feed pipeline, a discharge outlet of the hydrogen purification unit is connected with a hydrogen purification unit discharge pipeline, the hydrogen purification unit discharge pipeline is connected with a feed inlet of the high-pressure hydrogen unit through the high-pressure hydrogen unit feed pipeline, and the hydrogen purification unit discharge pipeline is also connected with a feed inlet of a hydrogen liquefaction unit through a hydrogen liquefaction unit feed pipeline; a discharge port of the high-pressure hydrogen unit is connected with a discharge pipeline of the high-pressure hydrogen unit, and a discharge port of the hydrogen liquefaction unit is connected with a discharge pipeline of the hydrogen liquefaction unit; the discharge hole of the high-pressure hydrogen unit is also connected with the feed inlet of the high-pressure hydrogen unit through a return line.
Preferably, the high-pressure hydrogen unit comprises a high-pressure hydrogen compressor inlet buffer tank and a high-pressure hydrogen compressor, a hydrogen purification unit discharge pipeline is connected with a feed inlet of the high-pressure hydrogen compressor inlet buffer tank through a high-pressure hydrogen unit feed pipeline, and a discharge outlet of the high-pressure hydrogen compressor is connected with a high-pressure hydrogen unit discharge pipeline.
Preferably, a first flow control valve is arranged on the hydrogen purification unit feed pipeline, a first pressure sensor is arranged on the hydrogen purification unit discharge pipeline, and the first flow control valve and the first pressure sensor are respectively electrically connected with the DCS system.
Preferably, a second pressure sensor is arranged on the discharge pipeline of the high-pressure hydrogen unit, a second flow control valve is arranged on the return pipeline, and the second flow control valve and the second pressure sensor are respectively and electrically connected with the DCS system.
Preferably, a third flow control valve is arranged on the hydrogen liquefaction unit feed pipeline, and the third flow control valve is electrically connected with the DCS system.
Preferably, a flow meter and a first feeding emergency cut-off valve are arranged on the hydrogen purification unit feeding pipeline, a second feeding emergency cut-off valve is arranged on the high-pressure hydrogen unit feeding pipeline, a third feeding emergency cut-off valve is arranged on the hydrogen liquefaction unit feeding pipeline, and the flow meter, the first feeding emergency cut-off valve, the second feeding emergency cut-off valve and the third feeding emergency cut-off valve are respectively electrically connected with the SIS system.
Preferably, a third pressure sensor is arranged on the discharge pipeline of the hydrogen purification unit, and the third pressure sensor is electrically connected with the SIS system.
Preferably, a fourth pressure sensor is arranged on the high-pressure hydrogen unit discharge pipeline, and the fourth pressure sensor is electrically connected with the SIS system.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model discloses intend to adopt the vice hydrogen of industry to produce as the raw materials, satisfy hydrogen fuel cell's high-purity hydrogen through hydrogen purification unit production, the high-pressure hydrogen gas and the liquid hydrogen that are used for high-pressure hydrogen torpedo car and the transportation of liquid hydrogen tank wagon are satisfied in the production of the other unit through high-pressure hydrogen unit and hydrogen liquefaction, propose high-pressure hydrogen and liquid hydrogen's combination production system innovatively, have realized the vice new mode of utilizing of producing hydrogen of industry.
2. The utility model discloses a DCS system and SIS system have set up automatic control and the safety interlock of high-pressure hydrogen and liquid hydrogen production, have considered the discontinuity of high-pressure hydrogen loading and the continuity of liquid hydrogen production, and reasonable setting control scheme in time adjusts system production load, guarantees to produce in succession, safely.
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 description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a hydrogen purification unit; 2. a hydrogen purification unit feed line; 201. a first flow control valve; 202. a flow meter; 203. a first feed emergency shut-off valve; 3. a discharge pipeline of the hydrogen purification unit; 301. a first pressure sensor; 302. a third pressure sensor; 4. a high pressure hydrogen unit feed line; 401. a second feeding emergency cut-off valve; 5. a high pressure hydrogen unit; 6. a hydrogen liquefaction unit feed line; 601. a third flow rate control valve; 602. a third feeding emergency cut-off valve; 7. a hydrogen liquefaction unit; 8. a high pressure hydrogen unit discharge line; 801. a second pressure sensor; 802. a fourth pressure sensor; 9. a hydrogen liquefaction unit discharge pipeline; 10. a return line; 1001. a second flow control valve.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a system for simultaneously producing high-pressure hydrogen and liquid hydrogen by using industrial byproduct hydrogen, which includes a hydrogen purification unit 1, a feed inlet of the hydrogen purification unit 1 is connected with a hydrogen purification unit feed pipeline 2, a discharge outlet of the hydrogen purification unit is connected with a hydrogen purification unit discharge pipeline 3, the hydrogen purification unit discharge pipeline 3 is connected with a feed inlet of a high-pressure hydrogen unit 5 through a high-pressure hydrogen unit feed pipeline 4, and the hydrogen purification unit discharge pipeline 3 is further connected with a feed inlet of a hydrogen liquefaction unit 7 through a hydrogen liquefaction unit feed pipeline 6; a discharge port of the high-pressure hydrogen unit 5 is connected with a high-pressure hydrogen unit discharge pipeline 8, and a discharge port of the hydrogen liquefaction unit 7 is connected with a hydrogen liquefaction unit discharge pipeline 9; the discharge hole of the high-pressure hydrogen unit 5 is also connected with the feed hole of the high-pressure hydrogen unit 5 through a return line 10.
Hydrogen purifying unit
The by-product hydrogen from outside the battery limits passes through the hydrogen purification unit 1 to produce pure hydrogen (the purity of the hydrogen is more than or equal to 99.97 percent (mole fraction)) meeting the requirements of the hydrogen fuel cell. The internal process flow of the hydrogen purification unit 1 can be determined according to the purity of hydrogen in the byproduct hydrogen and the components of other media, and the hydrogen purification unit can adopt the prior art, such as a pressure swing adsorption Process (PSA) or a cryogenic process and a pressure swing adsorption Process (PSA), wherein the cryogenic process comprises a refrigerator, a cooler and a liquid separation tank, the refrigerator provides a cold source, the cooler changes heavy hydrocarbon into liquid, and the liquid is separated out by the liquid separation tank. The utility model does not specify the specific process flow of the hydrogen purification unit 1. The operating conditions of the product of the hydrogen purification unit 1, i.e. high-purity hydrogen, are generally normal temperature and about 2.5MPaG, and the high-purity hydrogen is divided into two paths, one path is connected to the high-pressure hydrogen unit 5, and the other path is connected to the hydrogen liquefaction unit 7.
(II) high pressure Hydrogen Unit
Pure hydrogen from the hydrogen purification unit 1 is boosted by the high-pressure hydrogen unit 5, the pressure is raised to 22MPaG, the unit comprises a high-pressure hydrogen compressor inlet buffer tank and high-pressure hydrogen compressors, and the number of the high-pressure hydrogen compressors can be determined according to the scale of the system and the number of the high-pressure hydrogen hydrogenation columns.
(III) Hydrogen liquefaction Unit
The pure hydrogen from the hydrogen purification unit 1 is subjected to cryogenic cooling through the hydrogen liquefaction unit 7, the hydrogen is liquefied into gas, and the liquefied liquid hydrogen has the operation temperature of-251.3K and the pressure of 0.2MPaG. The hydrogen liquefaction unit 7 of the present invention may adopt the conventional liquefaction process, and does not specify the specific liquefaction process of the hydrogen liquefaction unit 7.
Example 2
In addition to embodiment 1, the hydrogen purification unit feed line 2 is provided with a first flow control valve 201, the hydrogen purification unit discharge line 3 is provided with a first pressure sensor 301, and the first flow control valve 201 and the first pressure sensor 301 are electrically connected to the DCS system, respectively.
The by-product hydrogen flow and the outlet pressure of the hydrogen purification unit 1 are controlled in cascade: the flow rate of the by-product hydrogen raw material gas entering the hydrogen purification unit 1 is controlled according to the outlet pressure of the hydrogen purification unit 1, and when the outlet pressure is high, the valve opening degree of the first flow control valve 201 is reduced, otherwise, the valve opening degree is increased.
Further, a second pressure sensor 801 is provided in the high-pressure hydrogen unit discharge line 8, a second flow control valve 1001 is provided in the return line 10, and the second flow control valve 1001 and the second pressure sensor 801 are electrically connected to the DCS system, respectively.
High-pressure hydrogen unit 5 outlet pressure control: when the loading amount of the discharged material of the high-pressure hydrogen unit 5 is small, the pressure at the outlet of the high-pressure hydrogen unit 5 is high, the opening degree of the second flow control valve 1001 on the return line 10 returning from the outlet of the high-pressure hydrogen unit 5 to the inlet of the high-pressure hydrogen unit 5 is increased, and conversely, the opening degree is decreased.
Furthermore, a third flow control valve 601 is arranged on the hydrogen liquefaction unit feeding pipeline 6, and the third flow control valve 601 is electrically connected with the DCS system.
Hydrogen liquefaction unit 7 inlet flow control: the amount of high-purity hydrogen to be introduced into the hydrogen liquefaction unit 7 is adjusted by the third flow rate control valve 601 according to the production condition of the hydrogen liquefaction unit 7.
Example 3
On the basis of embodiment 2, a first feeding emergency cut-off valve 203 and three flow meters 202 are arranged on the hydrogen purification unit feeding pipeline 2, a second feeding emergency cut-off valve 401 is arranged on the high-pressure hydrogen unit feeding pipeline 4, a third feeding emergency cut-off valve 602 is arranged on the hydrogen liquefaction unit feeding pipeline 6, and the flow meters 202, the first feeding emergency cut-off valve 203, the second feeding emergency cut-off valve 401 and the third feeding emergency cut-off valve 602 are respectively electrically connected with the SIS system.
Low-side hydrogen production feed flow interlocking: when the flow meter 202 (two out of three) gives a low alarm, the first feeding emergency cut-off valve 203 on the feeding pipeline 2 of the hydrogen purification unit, the second feeding emergency cut-off valve 401 on the feeding pipeline 4 of the high-pressure hydrogen unit and the third feeding emergency cut-off valve 602 on the feeding pipeline 6 of the hydrogen liquefaction unit are closed in an interlocking manner, and the hydrogen purification unit 1, the high-pressure hydrogen unit 5 and the hydrogen liquefaction unit 7 are shut down in a parallel locking manner.
Further, three third pressure sensors 302 are arranged on the hydrogen purification unit discharge pipeline 3, and the third pressure sensors 302 are electrically connected with the SIS system.
The hydrogen purification unit discharge pipeline 3 is low in pressure and interlocked: when the third pressure sensor 302 (two out of three) at the outlet of the hydrogen purification unit gives a low alarm, the second feeding emergency cut-off valve 401 on the feeding pipeline 4 of the high-pressure hydrogen unit and the third feeding emergency cut-off valve 602 on the feeding pipeline 6 of the hydrogen liquefaction unit are closed in an interlocking manner, and the related moving equipment of the high-pressure hydrogen unit 5 and the hydrogen liquefaction unit 7 is closed in an interlocking manner.
Further, three fourth pressure sensors 802 are arranged on the high-pressure hydrogen unit discharge pipeline 8, and the fourth pressure sensors 802 are electrically connected with the SIS system.
High-pressure interlocking of 8 pressure high-pressure hydrogen unit discharge pipelines: when the fourth pressure sensor 802 (two out of three) at the outlet of the high-pressure hydrogen unit gives a high-high alarm, the second feeding emergency cut-off valve 401 on the feeding pipeline 4 of the high-pressure hydrogen unit is closed in an interlocking manner, and the internal equipment of the high-pressure hydrogen unit 5 is closed in an interlocking manner.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The system for simultaneously producing high-pressure hydrogen and liquid hydrogen by utilizing industrial byproduct hydrogen is characterized by comprising a hydrogen purification unit (1), wherein a feed inlet of the hydrogen purification unit (1) is connected with a hydrogen purification unit feed pipeline (2), a discharge outlet of the hydrogen purification unit is connected with a hydrogen purification unit discharge pipeline (3), the hydrogen purification unit discharge pipeline (3) is connected with a feed inlet of a high-pressure hydrogen unit (5) through a high-pressure hydrogen unit feed pipeline (4), and the hydrogen purification unit discharge pipeline (3) is also connected with a feed inlet of a hydrogen liquefaction unit (7) through a hydrogen liquefaction unit feed pipeline (6); a discharge port of the high-pressure hydrogen unit (5) is connected with a high-pressure hydrogen unit discharge pipeline (8), and a discharge port of the hydrogen liquefaction unit (7) is connected with a hydrogen liquefaction unit discharge pipeline (9); the discharge hole of the high-pressure hydrogen unit (5) is also connected with the feed hole of the high-pressure hydrogen unit (5) through a return pipeline (10).
2. The system for simultaneously producing high-pressure hydrogen and liquid hydrogen by using industrial by-product hydrogen as claimed in claim 1, wherein the high-pressure hydrogen unit (5) comprises a high-pressure hydrogen compressor inlet buffer tank and a high-pressure hydrogen compressor, the hydrogen purification unit discharge pipeline (3) is connected with the feed inlet of the high-pressure hydrogen compressor inlet buffer tank through a high-pressure hydrogen unit feed pipeline (4), and the discharge outlet of the high-pressure hydrogen compressor is connected with a high-pressure hydrogen unit discharge pipeline (8).
3. The system for simultaneously producing high-pressure hydrogen and liquid hydrogen by using industrial by-product hydrogen as claimed in claim 1, wherein a first flow control valve (201) is arranged on the feeding pipeline (2) of the hydrogen purification unit, a first pressure sensor (301) is arranged on the discharging pipeline (3) of the hydrogen purification unit, and the first flow control valve (201) and the first pressure sensor (301) are respectively and electrically connected with the DCS system.
4. The system for simultaneously producing high-pressure hydrogen and liquid hydrogen by using industrial by-product hydrogen as claimed in claim 1, wherein a second pressure sensor (801) is provided on the high-pressure hydrogen unit discharge line (8), a second flow control valve (1001) is provided on the return line (10), and the second flow control valve (1001) and the second pressure sensor (801) are electrically connected to the DCS system, respectively.
5. The system for simultaneously producing high-pressure hydrogen and liquid hydrogen by using industrial byproduct hydrogen as claimed in claim 1, wherein a third flow control valve (601) is arranged on the feed pipeline (6) of the hydrogen liquefaction unit, and the third flow control valve (601) is electrically connected with the DCS system.
6. The system for simultaneously producing high-pressure hydrogen and liquid hydrogen by using industrial by-product hydrogen as claimed in claim 1, wherein a flow meter (202) and a first feeding emergency cut-off valve (203) are arranged on the hydrogen purification unit feeding pipeline (2), a second feeding emergency cut-off valve (401) is arranged on the high-pressure hydrogen unit feeding pipeline (4), a third feeding emergency cut-off valve (602) is arranged on the hydrogen liquefaction unit feeding pipeline (6), and the flow meter (202), the first feeding emergency cut-off valve (203), the second feeding emergency cut-off valve (401) and the third feeding emergency cut-off valve (602) are respectively electrically connected with the SIS system.
7. The system for simultaneously producing high-pressure hydrogen and liquid hydrogen by using industrial by-product hydrogen as claimed in claim 6, wherein a third pressure sensor (302) is arranged on the discharge pipeline (3) of the hydrogen purification unit, and the third pressure sensor (302) is electrically connected with the SIS system.
8. The system for simultaneously producing high-pressure hydrogen and liquid hydrogen by using industrial by-product hydrogen as claimed in claim 6, wherein a fourth pressure sensor (802) is arranged on the discharge pipeline (8) of the high-pressure hydrogen unit, and the fourth pressure sensor (802) is electrically connected with the SIS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222152975.9U CN218523412U (en) | 2022-08-16 | 2022-08-16 | System for simultaneously producing high-pressure hydrogen and liquid hydrogen by utilizing industrial byproduct hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222152975.9U CN218523412U (en) | 2022-08-16 | 2022-08-16 | System for simultaneously producing high-pressure hydrogen and liquid hydrogen by utilizing industrial byproduct hydrogen |
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| Publication Number | Publication Date |
|---|---|
| CN218523412U true CN218523412U (en) | 2023-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222152975.9U Active CN218523412U (en) | 2022-08-16 | 2022-08-16 | System for simultaneously producing high-pressure hydrogen and liquid hydrogen by utilizing industrial byproduct hydrogen |
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| CN (1) | CN218523412U (en) |
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- 2022-08-16 CN CN202222152975.9U patent/CN218523412U/en active Active
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