CN108396328B - Inside purge clean system of hydrogen generator - Google Patents
Inside purge clean system of hydrogen generator Download PDFInfo
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- CN108396328B CN108396328B CN201810569083.4A CN201810569083A CN108396328B CN 108396328 B CN108396328 B CN 108396328B CN 201810569083 A CN201810569083 A CN 201810569083A CN 108396328 B CN108396328 B CN 108396328B
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 147
- 239000001257 hydrogen Substances 0.000 title claims abstract description 145
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 145
- 238000010926 purge Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims abstract description 24
- 238000000746 purification Methods 0.000 claims description 31
- 238000012806 monitoring device Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 16
- 239000002808 molecular sieve Substances 0.000 claims description 6
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical group [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 239000007789 gas Substances 0.000 description 31
- 238000004519 manufacturing process Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 150000002431 hydrogen Chemical class 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000004880 explosion Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Fuel Cell (AREA)
Abstract
The utility model discloses an internal purging and purifying system of a hydrogen generator, which comprises a hydrogen generator, a gas-water separator, a liquid seal and a hydrogen purifier which are connected through pipelines, wherein the hydrogen generator is connected with the gas-water separator through a first check valve, the gas-water separator is connected with the liquid seal through a multi-way interface, the hydrogen purifier comprises at least two groups of purifier cylinders, the lower parts of the purifier cylinders are connected through pipelines to form a first loop, two groups of electromagnetic valves are arranged between two adjacent groups of purifier cylinders on the first loop, a second loop is also arranged on the lower part of each purifier cylinder in parallel with the first loop, the same number of electromagnetic valves as the first loop are arranged on the second loop, the upper parts of the two adjacent groups of purifier cylinders are also connected with pressure regulating valves, the upper parts of the purifier cylinders are respectively connected with outlet pipelines, and the multi-way interface is respectively connected between the two adjacent groups of electromagnetic valves of the first loop through pipelines, and the liquid seal is respectively connected between the two adjacent groups of electromagnetic valves of the second loop through pipelines.
Description
Technical Field
The utility model relates to a hydrogen generating device, in particular to an internal purging and purifying system of a hydrogen generator.
Background
The traditional large-scale hydrogen generating device mostly adopts external inert gas to discharge internal residual gas, and then separates the inert gas into hydrogen, so that the complicated process of external gas source is increased, the inert gas separating device is also added, the whole process is complicated to operate, the safety production is not facilitated, and the risk factors are increased. The novel technology does not need an external air source, and the internal air is emptied through the air source generated by the novel technology, so that the technical process and the operation steps are greatly simplified, the operation safety is improved, and the production input cost is reduced.
The hydrogen is used as the most efficient clean energy, becomes a hot spot for research in various countries, and is widely popularized by using pure water electrolysis to prepare hydrogen as the most environment-friendly technology, and various electrolytic hydrogen production generating devices are generated. Because hydrogen is used as combustible explosive gas, the internal gas replacement is carried out before the hydrogen is formally output by the whole hydrogen production device, so that the air remained in the system is reduced, and the explosion is prevented.
The explosion limit of hydrogen is 4.1% -74.2%, the process pipeline of the traditional hydrogen production device is complex, the residual amount of the internal air is more, the purity of the generated hydrogen is insufficient, and the generated hydrogen is provided with alkaline gas, so that the explosion limit can be reached, an external gas source is needed, the internal air is replaced and purified, generally nitrogen is taken as the main source, and the nitrogen is blown into the hydrogen production device through an external nitrogen bottle to discharge the residual air, so that the aim of emptying and replacement is achieved. After the external air source, the nitrogen removal process step is added, so that the process pipeline in the hydrogen production device is complex and automatic control cannot be realized. The traditional hydrogen production device has long startup hydrogen production time, requires a plurality of hours, and cannot achieve the effect of fast hydrogen production by startup hydrogen production, so that an external air source is required to realize purging and replacement of internal air.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the utility model aims to provide a system which does not need to be externally connected with an external air source, so as to realize purging and purifying the inside of the hydrogen generator device.
2. Technical proposal
In order to solve the problems, the utility model adopts the following technical scheme.
The utility model provides a hydrogen generator inside sweeps clean system, includes hydrogen generator, gas-water separator, liquid seal and the hydrogen purifier that links to each other through the pipeline, hydrogen generator pass through check valve one and gas-water separator link to each other, gas-water separator pass through the multi-way interface and link to each other with the liquid seal, the hydrogen purifier include two sets of clarifier jar at least, the lower part of each clarifier jar passes through the pipe connection and forms return circuit one, all is provided with two sets of solenoid valves on the return circuit one between two adjacent sets of clarifier jar, the lower part of each clarifier jar still is provided with return circuit two in parallel with the return circuit together, is provided with the solenoid valve of the same quantity as return circuit on the return circuit two, the upper portion of two adjacent sets of clarifier jar still is connected with the pressure regulating valve, the outlet pipeline is connected respectively to the upper portion of each clarifier jar, the multi-way interface still pass through the pipeline and connect respectively between two adjacent solenoid valves of return circuit two adjacent sets of solenoid valve, the liquid seal passes through the pipeline and connects respectively between two adjacent solenoid valve of return circuit.
Furthermore, an electromagnetic valve is arranged between the multi-way interface of the gas-water separator and the liquid seal.
Furthermore, the multi-way interface of the gas-water separator is communicated with the liquid seal through a pressure release valve.
Further, an on-line monitoring device is arranged between the outlet pipeline and the liquid seal. The on-line monitoring device is also provided with a check valve ten in parallel through a pipeline
Further, a second pressure detection and adjustment device is arranged at the front part of the on-line monitoring device.
Furthermore, the purifier A cylinder and the purifier B cylinder of the hydrogen purification device are filled with catalysts.
Further, the catalyst is a molecular sieve or a mixture of the molecular sieve and a palladium catalyst.
Further, the purifier A cylinder and the purifier B cylinder of the hydrogen purification device are respectively connected with an outlet pipeline through a check valve eight and a check valve nine.
Furthermore, the outlet pipeline is also provided with a first pressure detection and adjustment device.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages that:
1) The internal process pipeline is simple, no alkaline gas exists, and the gas can be directly output when the purity requirement is low, so that the gas can be directly used as an air source for internal purging replacement.
2) The hydrogen generator can adopt a PEM alkali-free pure water electrolysis hydrogen production device, has high hydrogen production rate, can output high-purity hydrogen in five minutes, can realize self-supply emptying, replacement and purification air sources, can realize automatic control, does not need to additionally increase a process pipeline for removing external air sources, is simple to operate, and greatly improves the working efficiency.
3) The inside adopts two sets of purifier, can one set purge and purify, and the other set then carries out regeneration replacement, does not need to change the catalyst and accomplishes the realization internal purification, is greatly superior to the technique of changing the catalyst in traditional hydrogen manufacturing, has reduced the cost, increase of service life.
4) The internal gas is emptied through the gas source generated by the gas source without an external gas source, so that the separation of impurity gas caused by separating the external gas source is reduced, the purification effect of the whole system is better, the process and the operation steps are greatly simplified, the operation safety is improved, and the production investment cost is reduced.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;
FIG. 2 is a schematic structural view of embodiment 2 of the present utility model;
in the figure, 1, a hydrogen generator, 2, a gas-water separator, 3, a purifier A cylinder, 4, a purifier B cylinder, 5, a liquid seal, 6, a one-way valve I, 7, a solenoid valve seven, 8, a relief valve, 9, a solenoid valve II, 10, a solenoid valve III, 11, a solenoid valve IV, 12, a solenoid valve V, 13, a pressure regulating valve VI, 14, a one-way valve eight, 15, a one-way valve nine, 16, a one-way valve ten, 17, an on-line monitoring device, 18, a pressure detection regulating device I, 19, a one-way valve eleven, 20, an outlet pipeline, 21, a multi-way joint, 22, a flame arrester, 23, a manual regulating valve, 24, a one-way valve eleven, 25, a one-way valve twelve, 26, a pressure detection regulating device II, 27, a purifier C cylinder, 28, a one-way valve thirteen, 29, a solenoid valve fourteen, 30, a solenoid valve fifteen, 31, a pressure regulating valve sixteen, 32, a solenoid valve seventeen, 33 and a solenoid valve eighteen.
Detailed Description
The drawings in the embodiments of the present utility model will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only a few embodiments of the present utility model; but not all embodiments, are based on embodiments in the present utility model; all other embodiments obtained by those skilled in the art without undue burden; all falling within the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Example 1
The utility model provides a hydrogen generator inside sweeps clean system, includes hydrogen generator 1, gas-water separator 2, liquid seal 5 and the hydrogen purifier that link to each other through the pipeline, hydrogen generator 1 link to each other with gas-water separator 2 through check valve one 6, the hydrogen purifier include clarifier A jar 3 and clarifier B jar 4, the lower part of clarifier A jar 3 is provided with solenoid valve two 9, the lower part of clarifier B jar 4 is provided with solenoid valve three 10, solenoid valve two 9 and solenoid valve three 10 establish ties and form return circuit one, the lower part of clarifier A jar 3 and clarifier B jar 4 still is provided with return circuit two with the return circuit in parallel, be provided with solenoid valve four 11 and solenoid valve five 12 on the return circuit two.
The purifier A cylinder 3 is communicated with the upper part of the purifier B cylinder 4 through a pipeline and is provided with a pressure regulating valve six 13, the purifier A cylinder 3 is connected with an outlet pipeline 20 through a check valve eight 14, the purifier B cylinder 4 is connected with the outlet pipeline 20 through a check valve nine 15, and the outlet pipeline 20 is also provided with a pressure detection regulating device I18, a check valve eleven 19 and a flame arrester 22. The outlet end of the gas-water separator 2 is respectively connected with a liquid seal 5 and a pipeline between the electromagnetic valve II and the electromagnetic valve III 10 of the hydrogen purification device through a multi-way connector 21, and the liquid seal 5 is also connected with a pipeline between the electromagnetic valve IV 11 and the electromagnetic valve V12 through a pipeline.
An electromagnetic valve seven 7 is further arranged between the multi-way port 21 of the gas-water separator 2 and the liquid seal 5, and the multi-way port 21 of the gas-water separator is also communicated with the liquid seal 5 through a pressure release valve 8.
A second pressure regulating device 26, a manual regulating valve 23, an eleventh check valve 24, a twelfth check valve 25, an on-line monitoring device 17 and a tenth check valve 16 are arranged between the hydrogen outlet pipeline 20 and the liquid seal 5. The one-way valve twelve 25, the on-line monitoring device 17 and the manual regulating valve 23 are sequentially connected in series, and are connected with the one-way valve ten 16 and the one-way valve eleven 24 which are connected in series in parallel and then connected with the pressure regulating device II 26. . The on-line monitoring device 17 in this embodiment is an on-line monitoring device manufactured by feimedes corporation of united states, and includes a DPT800 dew point meter and a PGA500 constant oxygen analyzer. When the on-line monitoring device is in operation, the check valve ten 16 is closed when the opening pressure is lower than 0.2-0.3 MPa when the pipeline pressure is higher than 0.3MPa, so that the on-line monitoring device is protected from damage. The second pressure regulating device 26 is a pressure reducing valve, so that the pressure of the purified hydrogen is reduced, and the on-line monitoring device is prevented from being damaged. The second pressure regulating device 26 and the check valve ten 16 are double-protected, so that the stability of monitoring data and the safety of the device are effectively ensured.
The purifier A cylinder 3 and the purifier B cylinder 4 of the hydrogen purification device are also filled with molecular sieve catalysts.
The device comprises the following specific steps when in use,
when the hydrogen gas is obtained from the hydrogen generator 1, the hydrogen gas enters the gas-water separator 2 through the one-way valve I6 to obtain purer hydrogen gas, the purer hydrogen gas enters the inlet end of the hydrogen purifier (namely a pipeline connecting the electromagnetic valve II 9 with the electromagnetic valve III 10 and the multi-way interface 21) after being subjected to gas-liquid separation through the gas-water separator 2, at the moment, the electromagnetic valve II 9, the electromagnetic valve III 10, the electromagnetic valve IV 11 and the electromagnetic valve V12 are closed, the electromagnetic valve V7 is opened, the hydrogen gas which is generated is conveyed into the liquid seal 5 through the pipeline and then is discharged into the atmosphere, and the air in the pipeline is purified and exhausted.
The hydrogen generator 1 continuously generates gas, after the above emptying is finished, the electromagnetic valve seven 7 is closed, the electromagnetic valve two 9 and the electromagnetic valve five 12 are opened, hydrogen generated at the moment enters the bottom of the cylinder 3 of the purifier A, then reaches the top through purification, the pressure detection and adjustment device one 18 is closed at the moment, the outlet pipeline 20 cannot output the hydrogen, a pressure maintaining process is achieved, the conveyed hydrogen enters the top of the cylinder 4 of the purifier B through the pressure adjustment valve six 13, is conveyed to the bottom of the cylinder 4 of the purifier B through pressure, the internal gas is replaced and purified for the cylinder 4 of the purifier B, the internal gas is emptied, enters a liquid seal after passing through the electromagnetic valve five 12, and finally is discharged into the atmosphere.
Then closing the electromagnetic valve II 9 and the electromagnetic valve III 12, opening the electromagnetic valve III 10 and the electromagnetic valve IV 11, enabling the generated hydrogen to enter the bottom of the cylinder 4 of the purifier B, purifying to reach the top, closing the pressure detection and adjustment device I18 at the moment, incapable of outputting hydrogen, achieving a pressure maintaining process, enabling the conveyed hydrogen to enter the top of the cylinder 3 of the purifier A through the pressure adjustment valve VI 13, conveying the conveyed hydrogen to the bottom of the cylinder 3 of the purifier A through pressure, performing internal gas replacement purification on the cylinder 3 of the purifier A, evacuating internal gas, enabling the hydrogen to enter a liquid seal after passing through the electromagnetic valve IV 11, and finally discharging the hydrogen into the atmosphere.
Through the steps, the gas inside the pipeline is purified and exhausted, and the formal production work is started. After hydrogen is obtained by the hydrogen generator 1, the hydrogen enters the gas-water separator 2 through the one-way valve I6 to obtain purer hydrogen, and the purer hydrogen enters the inlet end of the hydrogen purifier after gas-liquid separation of the gas-water separator. At this time, the solenoid valve seven 7, the solenoid valve three 10 and the solenoid valve four 11 are closed, the solenoid valve two 9 and the solenoid valve five 12 are opened, hydrogen generated at this time enters the bottom of the cylinder 3 of the purifier A, then reaches the top through purification, the hydrogen reaches the pressure detection and adjustment device one 18 through the one-way valve eight 14, at this time, the pressure detection and adjustment device one 18 sets a fixed pressure value, and as long as the pressure exceeds the set pressure, the hydrogen can be output through the outlet pipeline 20, and the output pressure is stable and the air quantity is stable through the pressure adjustment device. In the above process, due to the pressure limiting effect of the first pressure detecting and adjusting device 18, a small amount of hydrogen enters the purifier B cylinder 4 through the pressure adjusting valve six 13, the catalyst in the purifier B cylinder 4 is subjected to displacement purification, and the reacted hydrogen then enters the liquid seal 5 for evacuation. After the on-line monitoring device 17 measures that the set value is reached (in this embodiment, a fixed time setting is adopted), the solenoid valve two 9 and the solenoid valve five 12 are closed, the solenoid valve three 10 and the solenoid valve four 11 are opened, then the hydrogen is purified by the purifier B cylinder 4, the purification process refers to the purification step of the purifier A cylinder, and the above steps are repeated after the on-line monitoring device 17 measures that the set value is reached.
The one-way valve eight 14, the one-way valve eleven 19, the one-way valve eleven 24 and the one-way valve twelve 25 isolate external air and enter the interior, so that the internal purging and purifying effect is prevented from losing efficacy, the pressure release valve 8 plays a role in safety protection, when the pressure of hydrogen generated in the interior exceeds the safety pressure, the pressure release valve is automatically opened, the internal hydrogen is discharged into the atmosphere through a liquid seal, in addition, after the hydrogen generator 1 stops supplying air, the hydrogen is remained in the system, the hydrogen is discharged into the atmosphere through the electromagnetic valve seven 7, and the internal residual hydrogen is prevented from being accumulated in the hydrogen to cause the dangerous factors of explosion.
Example 2
The internal purging and purifying system of the hydrogen generator comprises the hydrogen generator 1, a gas-water separator 2, a liquid seal 5 and a hydrogen purifier which are connected through pipelines, wherein the hydrogen generator 1 is connected with the gas-water separator 2 through a one-way valve I6, and the hydrogen purifier comprises a purifier A cylinder 3 and a purifier B cylinder 4, and a purifier C cylinder 27. The lower part of each purifier cylinder is provided with a first loop through a pipeline, an electromagnetic valve II 9 and an electromagnetic valve III 10 are arranged between the purifier A cylinder 3 and the purifier B cylinder 4 on the first loop, and an electromagnetic valve seventeen 32 and an electromagnetic valve fourteen 29 are also arranged between the purifier B cylinder 4 and the purifier C cylinder 27 on the first loop. The lower parts of the purifier A cylinder 3 and the purifier B cylinder 4 and the purifier C cylinder 27 are also provided with a loop II in parallel, and the loop II is sequentially and serially provided with a solenoid valve IV 11, a solenoid valve V12, a solenoid valve eighteen 33 and a solenoid valve fifteen 30. The liquid seals are respectively connected between the solenoid valve IV 11 and the solenoid valve V12 on the loop II and between the solenoid valve eighteen 33 and the solenoid valve fifteen 30.
The purifier A cylinder 3 is communicated with the purifier B cylinder 4 and the upper part of the purifier C cylinder 27 through pipelines, a pressure regulating valve six 13 is arranged between the purifier A cylinder 3 and the purifier B cylinder 4, and a pressure regulating valve sixteen 31 is arranged between the purifier B cylinder 4 and the purifier C cylinder. The purifier A cylinder 3 is connected with the outlet pipeline 20 through a check valve eight 14, the purifier B cylinder 4 is connected with the outlet pipeline 20 through a check valve nine 15, and the purifier C cylinder 27 is connected with the outlet pipeline 20 through a check valve sixteen 31. The outlet pipeline 20 is also provided with a first pressure detection and adjustment device 18, a one-way valve eleven 19 and a flame arrester 22, wherein the first pressure detection and adjustment device 18 comprises at least two groups of pressure adjustment valves. The outlet end of the gas-water separator 2 is respectively connected with the liquid seal 5, a pipeline between the electromagnetic valve II 9 and the electromagnetic valve III 10 on the first loop of the hydrogen purification device and a pipeline between the electromagnetic valve seventeen 32 and the electromagnetic valve fourteen 29 on the first loop of the hydrogen purification device through a multi-way connector 21.
An electromagnetic valve seven 7 is further arranged between the multi-way port 21 of the gas-water separator 2 and the liquid seal 5, and the multi-way port 21 of the gas-water separator is also communicated with the liquid seal 5 through a pressure release valve 8.
A second pressure regulating device 26, a manual regulating valve 23, an eleventh check valve 24, a twelfth check valve 25, an on-line monitoring device 17 and a tenth check valve 16 are arranged between the hydrogen outlet pipeline 20 and the liquid seal 5. The one-way valve twelve 25, the on-line monitoring device 17 and the manual regulating valve 23 are sequentially connected in series, and are connected with the one-way valve ten 16 and the one-way valve eleven 24 which are connected in series in parallel and then connected with the pressure regulating device II 26. . The on-line monitoring device 17 in this embodiment is an on-line monitoring device manufactured by feimedes corporation of united states, and includes a DPT800 dew point meter and a PGA500 constant oxygen analyzer. When the on-line monitoring device is in operation, the check valve ten 16 is closed when the opening pressure is lower than 0.2-0.3 MPa when the pipeline pressure is higher than 0.3MPa, so that the on-line monitoring device is protected from damage. The second pressure regulating device 26 is a pressure reducing valve, so that the pressure of the purified hydrogen is reduced, and the on-line monitoring device is prevented from being damaged. The second pressure regulating device 26 and the check valve ten 16 are double-protected, so that the stability of monitoring data and the safety of the device are effectively ensured.
The purifier A cylinder 3 and the purifier B cylinder 4 of the hydrogen purification device are also filled with molecular sieve catalysts.
The device comprises the following specific steps when in use,
when the hydrogen gas is obtained from the hydrogen generator 1, the hydrogen gas enters the gas-water separator 2 through the one-way valve I6 to obtain purer hydrogen gas, the purer hydrogen gas enters the inlet end of the hydrogen purifier (namely a pipeline connecting the electromagnetic valve II 9 with the electromagnetic valve III 10 and the multi-way interface 21) after being separated from gas and liquid through the gas-water separator 2, at the moment, the electromagnetic valve II 9, the electromagnetic valve III 10, the electromagnetic valve IV 11, the electromagnetic valve V12, the electromagnetic valve fourteen 29, the electromagnetic valve fifteen 30, the electromagnetic valve seventeen 32 and the electromagnetic valve eighteen 33 are closed, the electromagnetic valve V7 is opened, the hydrogen gas which is generated is conveyed into the liquid seal 5 through the pipeline and then is discharged into the atmosphere, and the air in the pipeline is purified and exhausted.
The hydrogen generator 1 continuously generates gas, after the above emptying is finished, the electromagnetic valve seven 7 is closed, the electromagnetic valve two 9 and the electromagnetic valve five 12 are opened, hydrogen generated at the moment enters the bottom of the cylinder 3 of the purifier A, then reaches the top through purification, the pressure detection and adjustment device one 18 is closed at the moment, the outlet pipeline 20 cannot output the hydrogen, a pressure maintaining process is achieved, the conveyed hydrogen enters the top of the cylinder 4 of the purifier B through the pressure adjustment valve six 13, is conveyed to the bottom of the cylinder 4 of the purifier B through pressure, the internal gas is replaced and purified for the cylinder 4 of the purifier B, the internal gas is emptied, enters a liquid seal after passing through the electromagnetic valve five 12, and finally is discharged into the atmosphere. Then closing the electromagnetic valve five 12, opening the electromagnetic valve fifteen 30, enabling the generated hydrogen to enter the bottom of the purifier A cylinder 3, purifying to reach the top, closing the pressure detection and adjustment device one 18, enabling the outlet pipeline 20 to not output the hydrogen, achieving a pressure maintaining process, enabling the conveyed hydrogen to enter the top of the purifier C cylinder 27 through the pressure adjustment valve six 13 and the pressure adjustment valve sixteen 31, conveying the conveyed hydrogen to the bottom of the purifier C cylinder 27 through pressure, performing internal gas replacement purification on the purifier C cylinder 27, evacuating the internal gas, enabling the hydrogen to enter a liquid seal after passing through the electromagnetic valve fifteen 30, and finally discharging the hydrogen to the atmosphere. Here, it is anticipated that the solenoid valve two 9, the solenoid valve five 12 and the solenoid valve fifteen 30 may be opened, and meanwhile, the internal gas replacement and purification are performed on the purifier B cylinder and the purifier C cylinder, and the specific process thereof will not be described again.
After the steps are finished, the electromagnetic valve II 9 and the electromagnetic valve III 12 are closed, the electromagnetic valve III 10 and the electromagnetic valve IV 11 are opened, hydrogen generated at the moment enters the bottom of the cylinder 4 of the purifier B, then the hydrogen reaches the top through purification, the pressure detection and adjustment device I18 is closed at the moment and cannot output hydrogen, a pressure maintaining process is achieved, the conveyed hydrogen enters the top of the cylinder 3 of the purifier A through the pressure adjustment valve VI 13, is conveyed to the bottom of the cylinder 3 of the purifier A through pressure, the internal gas of the cylinder 3 of the purifier A is replaced and purified, the internal gas is emptied, the hydrogen enters a liquid seal after passing through the electromagnetic valve IV 11, and finally the hydrogen is discharged into the atmosphere. Here, the second and fifth solenoid valves 9 and 12 may be closed, the fourteen solenoid valves 29 and four solenoid valves 11 may be opened, and the purifier a cylinder may be purified, based on the principle of the above-described process of purifying the purifier a cylinder 3 by the purifier B cylinder 4.
Through the steps, the gas inside the pipeline is purified and exhausted, and the formal production work is started. After hydrogen is obtained by the hydrogen generator 1, the hydrogen enters the gas-water separator 2 through the one-way valve I6 to obtain purer hydrogen, and the purer hydrogen enters the inlet end of the hydrogen purifier after gas-liquid separation of the gas-water separator. At this time, the solenoid valve seven 7, the solenoid valve three 10 and the solenoid valve four 11 are closed, the solenoid valve two 9 and the solenoid valve five 12 are opened, hydrogen generated at this time enters the bottom of the cylinder 3 of the purifier A, then reaches the top through purification, the hydrogen reaches the pressure detection and adjustment device one 18 through the one-way valve eight 14, at this time, the pressure detection and adjustment device one 18 sets a fixed pressure value, and as long as the pressure exceeds the set pressure, the hydrogen can be output through the outlet pipeline 20, and the output pressure is stable and the air quantity is stable through the pressure adjustment device. In the above process, due to the pressure limiting effect of the first pressure detecting and adjusting device 18, a small amount of hydrogen enters the purifier B cylinder 4 and the purifier C cylinder 27 through the pressure adjusting valve six 13 and the pressure adjusting valve sixteen 31, the catalyst in the purifier B cylinder 4 and the purifier C cylinder 27 is replaced and purified, and the reacted hydrogen then enters the liquid seal 5 for emptying. After the online monitoring device 17 measures that the set value is reached (in this embodiment, a fixed time setting is adopted), the electromagnetic valve two 9 and the electromagnetic valve five 12 are closed, the electromagnetic valve three 10 and the electromagnetic valve four 11 are opened, then hydrogen is purified by the purifier B cylinder 4, the catalyst in the purifier A cylinder is subjected to replacement purification, the purification process refers to the purification step of the purifier A cylinder, and the steps are repeated after the online monitoring device 17 measures that the set value is reached.
The one-way valve eight 14, the one-way valve eleven 19, the one-way valve eleven 24 and the one-way valve twelve 25 isolate external air and enter the interior, so that the internal purging and purifying effect is prevented from losing efficacy, the pressure release valve 8 plays a role in safety protection, when the pressure of hydrogen generated in the interior exceeds the safety pressure, the pressure release valve is automatically opened, the internal hydrogen is discharged into the atmosphere through a liquid seal, in addition, after the hydrogen generator 1 stops supplying air, the hydrogen is remained in the system, the hydrogen is discharged into the atmosphere through the electromagnetic valve seven 7, and the internal residual hydrogen is prevented from being accumulated in the hydrogen to cause the dangerous factors of explosion.
It is envisioned that there may be multiple purifier cylinders depending on the hydrogen production rate, and after each purifier cylinder is purified separately, a single or multiple purifier cylinders may be purified simultaneously, and replacement purification is performed on other purifier cylinders, so as to meet the requirements of different hydrogen production rates.
The above; is only a preferred embodiment of the present utility model; the scope of the utility model is not limited in this respect; any person skilled in the art is within the technical scope of the present disclosure; equivalent substitutions or changes are made according to the technical proposal of the utility model and the improved conception thereof; are intended to be encompassed within the scope of the present utility model.
Claims (9)
1. The internal purging and purifying system of the hydrogen generator is characterized by comprising the hydrogen generator, a gas-water separator, a liquid seal and a hydrogen purifier which are connected through pipelines, wherein the hydrogen generator is connected with the gas-water separator through a first check valve, the gas-water separator is connected with the liquid seal through a multi-way interface, the hydrogen purifier comprises at least two groups of purifier cylinders, the lower parts of the purifier cylinders are connected through pipelines to form a first loop, two groups of electromagnetic valves are arranged between two adjacent groups of purifier cylinders on the first loop, a second loop is also arranged on the lower part of each purifier cylinder in parallel with the first loop, electromagnetic valves which are equal in number to the first loop are arranged on the second loop, the upper parts of the two adjacent groups of purifier cylinders are also connected with pressure regulating valves, the upper parts of the purifier cylinders are respectively connected with hydrogen outlet pipelines, and the multi-way interface is respectively connected between the two adjacent groups of electromagnetic valves of the first loop through pipelines, and the liquid seal is respectively connected between the two adjacent groups of electromagnetic valves of the first loop through the second loop; and an electromagnetic valve is also arranged between the multi-way interface and the liquid seal.
2. The hydrogen generator internal purge purification system of claim 1, wherein the multi-way port is further in fluid communication with the fluid seal via a pressure relief valve.
3. The hydrogen generator internal purge and purification system as claimed in claim 1, wherein said outlet line is further provided with a first pressure detection and adjustment device.
4. The hydrogen generator internal purge purification system of claim 1, wherein an on-line monitoring device is further provided between the outlet line and the liquid seal.
5. The hydrogen generator internal purging and purifying system as recited in claim 4, wherein the on-line monitoring device is further provided with a check valve in parallel via a pipeline, and a second pressure detecting and adjusting device is arranged at the front part of the on-line monitoring device.
6. The hydrogen generator internal purge and purification system as claimed in claim 1, wherein said purifier a and purifier B cylinders are further filled with a catalyst.
7. The hydrogen generator internal purge purification system as recited in claim 6, wherein said catalyst is a molecular sieve catalyst.
8. The hydrogen generator internal purge and purification system as recited in claim 6, wherein said catalyst is a mixture of molecular sieve catalyst and palladium catalyst.
9. The internal purging and purifying system for a hydrogen generator as claimed in claim 1, wherein said purifier a cylinder is connected to the outlet pipe through a check valve eight, and said purifier B is connected to the hydrogen outlet pipe through a check valve nine.
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| CN201810569083.4A CN108396328B (en) | 2018-06-05 | 2018-06-05 | Inside purge clean system of hydrogen generator |
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| CN108396328B true CN108396328B (en) | 2023-06-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011023865A1 (en) * | 2009-08-28 | 2011-03-03 | Compagnie Europeenne Des Technologies De L'hydrogene | Improved equipment for producing hydrogen |
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| CN202849053U (en) * | 2012-08-29 | 2013-04-03 | 崇左森隆林化科技有限公司 | Hydrogen gas purifier |
| CN107930344B (en) * | 2018-01-11 | 2024-03-19 | 山东赛克赛斯氢能源有限公司 | Internal circulation pressure swing adsorption type hydrogen purifier |
| CN208440712U (en) * | 2018-06-05 | 2019-01-29 | 山东赛克赛斯氢能源有限公司 | A kind of hydrogen generator internal sweep purification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011023865A1 (en) * | 2009-08-28 | 2011-03-03 | Compagnie Europeenne Des Technologies De L'hydrogene | Improved equipment for producing hydrogen |
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Denomination of invention: A hydrogen generator internal purging and purification system Granted publication date: 20230616 Pledgee: Bank of China Limited Jinan high tech sub branch Pledgor: Shandong Saikesaisi Hydrogen Energy Co.,Ltd. Registration number: Y2024980008827 |
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