CN117230489A - Gas-liquid separation system and electrolytic hydrogen production device - Google Patents
Gas-liquid separation system and electrolytic hydrogen production device Download PDFInfo
- Publication number
- CN117230489A CN117230489A CN202311498120.4A CN202311498120A CN117230489A CN 117230489 A CN117230489 A CN 117230489A CN 202311498120 A CN202311498120 A CN 202311498120A CN 117230489 A CN117230489 A CN 117230489A
- Authority
- CN
- China
- Prior art keywords
- gas
- liquid separation
- liquid
- outlet
- electrolyte
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 225
- 238000000926 separation method Methods 0.000 title claims abstract description 119
- 239000001257 hydrogen Substances 0.000 title claims abstract description 56
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 56
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000003792 electrolyte Substances 0.000 claims abstract description 84
- 239000000203 mixture Substances 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 47
- 238000005406 washing Methods 0.000 claims description 30
- 239000000498 cooling water Substances 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 28
- 239000001301 oxygen Substances 0.000 abstract description 28
- 229910052760 oxygen Inorganic materials 0.000 abstract description 28
- 238000005868 electrolysis reaction Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 5
- 230000005465 channeling Effects 0.000 abstract description 3
- 150000002431 hydrogen Chemical class 0.000 description 8
- 239000003513 alkali Substances 0.000 description 4
- 230000005587 bubbling Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to the technical field of hydrogen production by water electrolysis and discloses a gas-liquid separation system and an electrolytic hydrogen production device, wherein the gas-liquid separation system comprises a plurality of gas-liquid separation devices and a liquid pipeline, the electrolytic hydrogen production device comprises two gas-liquid separation systems and an electrolytic tank, a first outlet and a second outlet of the electrolytic tank are respectively connected with inlets of the two gas-liquid separation devices, the inlets of the electrolytic tank are connected with the first outlets of the two gas-liquid separation devices through the liquid pipeline, and after the internal electrolyte is electrolyzed, the generated hydrogen-liquid mixture and oxygen mixture are respectively conveyed into the two gas-liquid separation devices through the first outlets and the second outlets, and the electrolyte which is separated by the two gas-liquid separation systems and is boosted is recycled through the liquid pipeline and flows into the inlets of the two gas-liquid separation systems in a unidirectional manner. According to the invention, the electrolyte discharged from the bottom of the separator is respectively boosted and then is collected to the electrolytic tank in one way, so that the problem of gas channeling caused by communication between the hydrogen and the bottom of the oxygen separator in the prior art is solved, and accidents are fundamentally avoided.
Description
Technical Field
The invention relates to the technical field of hydrogen production by water electrolysis, in particular to a gas-liquid separation system and an electrolytic hydrogen production device.
Background
The hydrogen energy is used as a good energy carrier, has the characteristics of zero pollution, high energy and the like, and under the large background of carbon neutralization, each industry faces the problems of clean energy substitution and low carbon transformation, and the hydrogen is an ideal green energy and can be applied to each field. The current method with better hydrogen production technology economy mainly comprises the following steps: fossil energy reforming hydrogen production, industrial byproduct hydrogen production and electrolyzed water hydrogen production, wherein the alkaline water electrolysis bath hydrogen production is a relatively mature technical means.
However, the existing gas-liquid separation technology has a potential safety hazard in essence. The liquid levels of the two containers of the hydrogen separator and the oxygen separator are directly communicated, alkali liquid entrained in the gas is directly converged from the bottom of the separator and then returned to the electrolytic tank, and when the liquid level of the hydrogen separator and the oxygen separator is low or the pressure is unbalanced, the gas channeling of hydrogen and oxygen is easy to occur, so that safety accidents are caused.
In addition, after gas-liquid separation, hydrogen or oxygen enters a bubbling washer above the gas-liquid separator, and the hydrogen or the oxygen passes through the bubbling washer in a bubbling way to wash and remove trace alkali liquor entrained in the gas. Because the bubbling washing has small gas-liquid contact area and poor washing effect, hydrogen and oxygen can easily carry alkali liquor into a downstream working section, and the problems of potential alkali liquor pollution and material corrosion in subsequent hydrogen purification are increased.
Disclosure of Invention
Therefore, the invention aims to solve the technical problem of the prior art that the bottom of the hydrogen and oxygen separator is communicated to generate blowby gas, thereby providing a gas-liquid separation system and an electrolytic hydrogen production device.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, the invention provides a gas-liquid separation system, comprising a plurality of gas-liquid separation devices and a liquid pipeline, wherein the inlet of the gas-liquid separation devices is connected with one outlet of an electrolytic tank, the first outlet of the gas-liquid separation devices is connected with the liquid pipeline, and the liquid pipeline is connected with the inlet of the electrolytic tank; the gas-liquid separation device separates the first gas-liquid mixture discharged from the electrolytic tank into a second gas-liquid mixture and electrolyte, discharges the second gas-liquid mixture through a second outlet of the gas-liquid separation device, and carries out pressure boosting treatment on the electrolyte and then sequentially carries out unidirectional conveying back to the electrolytic tank through a first outlet and a liquid pipeline of the electrolyte.
According to the gas-liquid separation system provided by the invention, each gas-liquid separation device can respectively carry out pressure boosting treatment on electrolyte input into the gas-liquid separation device, and each gas-liquid separation device gathers the boosted electrolyte into the liquid pipeline and conveys the liquid pipeline back to the electrolytic tank, wherein the pressure boosting treatment can enable the electrolyte to circulate unidirectionally, and the phenomenon that gas generated in the gas-liquid separation device passes through the liquid pipeline due to the mutual communication of the gas-liquid separation devices in the existing product is effectively avoided.
In an alternative embodiment, each gas-liquid separation device comprises: the separator is connected with one outlet of the electrolytic tank, the first outlet of the separator is connected with the first end of the circulating pump, and the separator is used for separating a first gas-liquid mixture generated by the electrolytic tank into a second gas-liquid mixture and electrolyte, and then the electrolyte and the second gas-liquid mixture are respectively discharged through the first outlet and the second outlet of the separator; the second end of the circulating pump is connected with the inlet of the electrolytic tank through a liquid pipeline and is used for boosting the electrolyte discharged from the first outlet of the separator and then conveying the electrolyte back to the electrolytic tank; the second end of the circulating pump in each gas-liquid separation device is connected with a liquid pipeline.
According to the gas-liquid separation system, the circulating pump is in unidirectional transmission, so that gas generated by the separator can be effectively prevented from entering other separators through the pipeline.
In an alternative embodiment, each gas-liquid separation device further comprises: at least one first cooler for pre-cooling the first gas-liquid mixture exiting the electrolyzer; or cooling the electrolyte which is not pressurized; or cooling the electrolyte after the pressure boosting.
In an alternative embodiment, the gas-liquid separation system further comprises: and the second cooler is arranged on the liquid pipeline and is used for cooling the electrolyte discharged by each gas-liquid separation device.
According to the gas-liquid separation system provided by the invention, the plurality of coolers are arranged on the pipeline, so that moisture in gas can be condensed and separated, and meanwhile, the temperature of electrolyte is reduced, and damage to a device or pyrolysis is prevented.
In an alternative embodiment, the gas-liquid separation system further comprises: the first inlet of the water washing tower is connected with the second outlet of the gas-liquid separation device, the second inlet of the water washing tower is used for inputting cooling water, the water washing tower is used for carrying out water washing cooling on the second gas-liquid mixture, the first gas is obtained after electrolyte in the second gas-liquid mixture is removed, and the first gas is discharged through the outlet of the water washing tower.
According to the gas-liquid separation system provided by the invention, the cooling water in the water washing tower can wash the electrolyte in the gas-liquid mixture, and meanwhile, the cooling water can cool the gas-liquid mixture, so that water vapor in the gas is cooled and condensed, and the water content in the gas discharged from the outlet is reduced.
In an alternative embodiment, the water scrubber is provided with packing therein for increasing the contact area of the second gas-liquid mixture with the cooling water.
According to the gas-liquid separation system provided by the invention, the filler can increase the contact area of the gas-liquid mixture and cooling water, so that the washing effect is enhanced, and the entrainment of electrolyte in gas is effectively reduced.
In an alternative embodiment, the gas-liquid separation system further comprises: and the inlet of the third cooler is connected with the outlet of the water scrubber, and the third cooler is used for cooling the first gas by using cooling water to remove saturated water and then discharging the cooled first gas through the outlet of the third cooler.
According to the gas-liquid separation system provided by the invention, cooling water or a refrigerant is utilized to cool the gas, so that water vapor in the gas is cooled and condensed, and the moisture content in the outlet gas is reduced.
In an alternative embodiment, the gas-liquid separation system further comprises: and the demister is arranged at the outlet of the third cooler and is used for filtering condensed water in the cooled first gas.
The gas-liquid separation system provided by the invention can reduce the entrainment of water vapor and mist in the gas by the foam remover.
In a second aspect, the present invention provides an electrolytic hydrogen production device, including the two gas-liquid separation systems and the electrolytic tank provided in any one of the first aspect and any one of the optional embodiments thereof, wherein, the anode plate and the cathode plate of the electrolytic tank are respectively connected with the anode and the cathode of the external power source, the first outlet and the second outlet of the electrolytic tank are respectively connected with the inlets of the two gas-liquid separation devices, the inlets of the electrolytic tank are connected with the first outlets of the two gas-liquid separation devices through liquid pipelines, and after the internal electrolyte is electrolyzed, the generated hydrogen-liquid mixture and oxygen-liquid mixture are respectively conveyed to the two gas-liquid separation devices through the first outlets and the second outlets, and the electrolyte separated by the two gas-liquid separation systems and boosted is unidirectional to flow into the inlets of the electrolytic tank is recovered through the liquid pipeline.
According to the electrolytic hydrogen production device provided by the invention, each gas-liquid separation system respectively carries out pressure boosting treatment on electrolyte input into the gas-liquid separation system, and each gas-liquid separation system gathers the electrolyte after pressure boosting to the liquid pipeline and conveys the electrolyte back to the electrolytic tank, wherein the electrolyte can flow in one direction through the pressure boosting treatment, so that the safety problem caused by internal blowby of the separator due to mutual communication in an accident state is fundamentally avoided, meanwhile, the washing effect on the electrolyte in the gas can be enhanced through the water washing tower and the internal filler thereof, and the entrainment of the electrolyte in hydrogen is reduced.
In an alternative embodiment, the electrolyzer is powered by a DC power source.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a composition diagram of one specific example of a gas-liquid separation system according to an embodiment of the present invention;
FIG. 2 is a composition diagram of another specific example of a gas-liquid separation system according to an embodiment of the present invention;
fig. 3 is a composition diagram of a specific example of an electrolytic hydrogen production device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The embodiment provides a gas-liquid separation system, as shown in fig. 1, which comprises a plurality of gas-liquid separation devices 1 and a liquid pipeline 2, wherein an inlet of the gas-liquid separation device 1 is connected with one outlet of an electrolytic tank, a first outlet of the gas-liquid separation device 1 is connected with the liquid pipeline 2, and the liquid pipeline 2 is connected with an inlet of the electrolytic tank; the gas-liquid separation device 1 separates the first gas-liquid mixture discharged from the electrolytic tank into a second gas-liquid mixture and electrolyte, discharges the second gas-liquid mixture through a second outlet of the gas-liquid separation device, boosts the pressure of the electrolyte, and sequentially conveys the electrolyte back to the electrolytic tank in one way through a first outlet of the gas-liquid separation device and a liquid pipeline 2.
Specifically, referring to fig. 1, after the electrolytic bath electrolyzes the electrolyte in the electrolytic bath, the generated gas and the electrolyte entrained in the gas form a first gas-liquid mixture together, and the first gas-liquid mixture is discharged into a gas-liquid separation device 1 connected with an outlet of the electrolytic bath through an outlet. The gas-liquid separation device 1 separates the first gas-liquid mixture into a second gas-liquid mixture and an electrolyte, and then discharges the second gas-liquid mixture through the second outlet thereof, and simultaneously, pressurizes the electrolyte and discharges the electrolyte through the first outlet thereof. The electrolyte discharged from each gas-liquid separation device 1 after pressure boosting is gathered to a liquid pipeline 2, and is concentrated and gathered to an inlet of an electrolytic tank through the liquid pipeline 2, and flows in one direction and is returned to the electrolytic tank.
The number of the gas-liquid separation devices in the gas-liquid separation system is determined according to the number of the gas types generated after electrolysis, and the number and types of the electrolytic cells are determined according to actual requirements, and the method is not limited herein.
According to the gas-liquid separation system provided by the embodiment, each gas-liquid separation device can respectively boost the electrolyte input into the gas-liquid separation device, and each gas-liquid separation device gathers the boosted electrolyte to the liquid pipeline 2 and conveys the boosted electrolyte back to the electrolytic tank, wherein the boosted electrolyte can flow unidirectionally, and the phenomenon that gas generated in the gas-liquid separation device is generated through the liquid pipeline 2 due to the mutual communication of the gas-liquid separation devices in the existing product is effectively avoided.
In some alternative embodiments, as shown in fig. 2, each gas-liquid separation device 1 includes: a separator 11 and a circulation pump 12, wherein an inlet of the separator 11 is connected to one outlet of the electrolytic tank 3, a first outlet of the separator 11 is connected to a first end of the circulation pump 12, and the separator is used for separating a first gas-liquid mixture generated by the electrolytic tank 3 into a second gas-liquid mixture and an electrolyte, and then discharging the electrolyte and the second gas-liquid mixture through the first outlet and the second outlet thereof, respectively; a circulation pump 12, the second end of which is connected with the inlet of the electrolytic tank 3 through the liquid pipeline 2, and which is used for pumping up the electrolyte discharged from the first outlet of the separator 11 and then delivering the electrolyte back to the electrolytic tank 3; the second end of the circulation pump 12 in each gas-liquid separation device is connected to the liquid conduit 2.
The gas-liquid separation system shown in fig. 2 is exemplified as comprising two gas-liquid separation devices 1.
Specifically, referring to fig. 2, two first gas-liquid mixtures generated by electrolysis in the electrolytic tank 3 are discharged into 2 separators 11, respectively, and the two separators 11 discharge the separated second gas-liquid mixture through a second outlet at the top and discharge the separated electrolyte through a first outlet at the bottom. The separated electrolyte is pumped up by the circulating pump 12 and then is collected into the liquid pipeline 2, and then is concentrated and sent to the inlet of the electrolytic tank through the liquid pipeline 2 to be collected into the electrolytic tank.
The type, kind and number of the separator 11 and the circulation pump 12 may be set according to actual needs, and are not limited herein.
In some alternative embodiments, as shown in fig. 2, each gas-liquid separation device further comprises: at least one first cooler 13, wherein the first cooler 13 is used for pre-cooling the first gas-liquid mixture discharged from the electrolytic tank 3; or cooling the electrolyte which is not pressurized; or cooling the electrolyte after the pressure boosting.
Specifically, with reference to fig. 2, a first cooler 13 is provided on the conduit between the outlet of the electrolyzer 3 and the inlet of the separator 11 for pre-cooling the first gas-liquid mixture; a first cooler 13 is provided on a pipe between the first outlet of the separator 11 and the first end of the circulation pump 12 for cooling the electrolyte that is not pressurized; the first cooler 13 is provided on the pipe between the second end of the circulation pump 12 and the inlet of the liquid pipe 2 for cooling the electrolyte after pressure boosting.
In some alternative embodiments, as shown in fig. 2, the gas-liquid separation system further comprises: a second cooler 14 provided on the liquid pipe 2 for cooling the electrolyte discharged from each gas-liquid separation device 1.
The type, kind and number of the second coolers 14 are not limited here.
In some alternative embodiments, as shown in fig. 2, the gas-liquid separation system further comprises: the first inlet of the water washing tower 15 is connected with the second outlet of the gas-liquid separation device 1, the second inlet of the water washing tower inputs cooling water, the water washing tower is used for washing and cooling the second gas-liquid mixture, the first gas is obtained after the electrolyte in the second gas-liquid mixture is removed, and the first gas is discharged through the outlet of the water washing tower.
Specifically, referring to fig. 2, cooling water is input through the second inlet of the water washing tower 15, the second gas-liquid mixture in the water washing tower 15 is cooled by water washing, electrolyte in the second gas-liquid mixture is washed away, and heat in the second gas-liquid mixture is taken away by the cooling water, so that the second gas-liquid mixture is cooled.
In some alternative embodiments, as shown in fig. 2, the water scrubber 15 is provided with packing therein for increasing the contact area of the second gas-liquid mixture with the cooling water.
Specifically, the tower diameter of the water scrubber is calculated according to the following equation of Been-Huo Gen:
（1）
wherein u is g The unit is m/s for the flooding gas velocity; g is gravity acceleration of 9.81m/s 2 The method comprises the steps of carrying out a first treatment on the surface of the a is the specific surface area of the filler, and the unit is m 2 /m 3 The method comprises the steps of carrying out a first treatment on the surface of the Epsilon is the void ratio of the filler layer and the unit is m 3 /m 3 ；ρ G 、ρ L Is the density of gas phase and liquid phase, and the unit is kg/m 3 ；μ L The viscosity of the liquid is expressed in mPas; l, G the mass flow rate of liquid phase and gas phase is kg/h; A. k is the correlation constant and is used to determine the correlation value,depending on the filler selected.
The floodpoint gas velocity u is calculated by a Been-Huo Gen formula g The operating gas velocity u is generally selected to be 0.4-0.8 times the flood point gas velocity.
According to the operation air speed u, the tower diameter D of the water washing tower is calculated:
（2）
wherein D is the tower diameter of the water washing tower, and the unit is m; v (V) G Is the volume flow of the gas, and the unit is m 3 /h; u is the air speed of the air tower, and the unit is m/s.
Alternatively, the packing packed inside the water scrubber 15 may be of various types including, but not limited to, raschig rings, pall rings, θ rings, and the like.
In some alternative embodiments, as shown in fig. 2, the gas-liquid separation system further comprises: and the inlet of the third cooler 16 is connected with the outlet of the water scrubber 15, and the third cooler cools the first gas by using cooling water to remove saturated water and then discharges the cooled first gas through the outlet thereof.
Specifically, referring to fig. 2, the third cooler 16 is integrated with the water scrubber 15, the second inlet of the water scrubber 15 inputs cooling water to circulate inside the third cooler 16 and the water scrubber 15, the third cooler 16 cools the first gas, so that part of saturated water in the first gas is condensed into liquid water, and the liquid water flows into the water scrubber 15 to obtain the cooled first gas.
Preferably, the temperature of the cooling water or the refrigerant is 0-60 ℃.
In some alternative embodiments, as shown in fig. 2, the gas-liquid separation system further comprises: a demister 17 is provided at the outlet of the third cooler 16 for filtering condensed water in the cooled first gas.
Alternatively, the type of demister 17 can take a variety of forms including, but not limited to, wire mesh demisters, corrugated plate demisters, and the like.
The embodiment provides an electrolytic hydrogen production device, as shown in fig. 3, including the two gas-liquid separation systems and the electrolytic tank 3 provided in any one of the above embodiments and any one of the optional embodiments thereof, where the electrolytic tank 3, an anode plate and a cathode plate thereof are respectively connected with an anode and a cathode of an external power supply, a first outlet and a second outlet thereof are respectively connected with inlets of the two gas-liquid separation devices, an inlet thereof is connected with a first outlet of the two gas-liquid separation devices through a liquid pipeline 2, and after the internal electrolyte is electrolyzed, a generated hydrogen-liquid mixture and an oxygen-gas mixture are respectively conveyed to the two gas-liquid separation devices through the first outlet and the second outlet, and the electrolyte separated by the two gas-liquid separation systems and boosted by the liquid pipeline 2 flows into the inlets of the two gas-liquid separation devices in a unidirectional manner.
The electrolytic hydrogen production apparatus shown in fig. 3 includes an electrolytic tank 3 and two gas-liquid separation apparatuses, namely, a hydrogen separation apparatus and an oxygen separation apparatus, respectively.
Specifically, as shown in fig. 3, after the electrolytic bath 3 electrolyzes the electrolyte therein, the generated first hydrogen gas mixture and first oxygen gas mixture are discharged through two outlets of the electrolytic bath 3, respectively, and the first hydrogen gas mixture and first oxygen gas mixture are pre-cooled by the hydrogen-side gas-liquid cooler 131 and the oxygen-side gas-liquid cooler 132, respectively, and then are conveyed to the hydrogen separator 111 and the oxygen separator 112 through pipes.
According to the electrolytic hydrogen production device provided by the embodiment, each gas-liquid separation system respectively carries out pressure boosting treatment on electrolyte input into the gas-liquid separation system, and each gas-liquid separation system gathers the boosted electrolyte into the liquid pipeline 2 and conveys the electrolyte back to the electrolytic tank 3, wherein the pressure boosting treatment enables the electrolyte to circulate unidirectionally, so that the safety problem caused by internal gas channeling of the separator due to mutual communication in an accident state is fundamentally avoided; meanwhile, through the water washing tower and the filler in the water washing tower, the gas-liquid contact area is greatly increased, the washing effect on electrolyte in gas can be enhanced, and the entrainment of the electrolyte in hydrogen is reduced.
After the first hydrogen mixture is separated into a second hydrogen mixture and an electrolyte by the hydrogen separator 111, the second hydrogen mixture is delivered to the hydrogen water scrubber 151 through the second outlet; after the oxygen separator 112 separates the first oxygen mixture into a second oxygen mixture and an electrolyte, the second oxygen mixture is delivered to the oxygen scrubber 152 through a second outlet; the hydrogen separator 111 and the oxygen separator 112 each maintain a constant liquid level.
Cooling water is input into a second inlet of the hydrogen water scrubber 151, the second hydrogen mixture is fully contacted with the cooling water under the action of a filler, the entrained electrolyte is washed off to obtain hydrogen, and meanwhile, the cooling water circulates in a hydrogen cooler 161 connected with the hydrogen water scrubber 151 to cool the hydrogen; the second inlet of the oxygen scrubber 152 is fed with cooling water, the second oxygen mixture is fully contacted with the cooling water under the action of the filler, oxygen is obtained after entrained electrolyte is washed away, and the cooling water circulates in an oxygen cooler 162 connected with the oxygen scrubber 152 to cool the oxygen.
The hydrogen side demister 171 and the oxygen side demister 172 are used for filtering out water vapor or mist entrained in the hydrogen and oxygen, respectively, so as to obtain dry hydrogen and oxygen.
The electrolyte separated in the hydrogen separator 111 is pressure-cooled by the hydrogen-side gas-liquid cooler 131 and the hydrogen-side circulation pump 121, and the electrolyte separated in the oxygen separator 112 is pressure-cooled by the oxygen-side gas-liquid cooler 132 and the oxygen-side circulation pump 122; the electrolyte after the pressure boosting cooling on the hydrogen side and the oxygen side is collected in the liquid pipe 2, cooled by the electrolyte cooler 14 on the liquid pipe 2, and returned to the electrolytic tank 3.
Alternatively, the electrolyte is water, potassium hydroxide solution, or other solution that can generate hydrogen by electrolysis, without limitation.
The electrolytic tank is powered by a direct current power supply.
Alternatively, the electrolyzer may be an alkaline water electrolyzer or a proton exchange membrane (Proton Exchange Membrane, PEM) electrolyzer, etc. as desired, without limitation.
It should be noted that, the person skilled in the art may modify and design the parameters of the gas-liquid separation system and the electrolytic hydrogen production device according to the actual requirements, such as pipe diameter, pipe flow rate, material, and container size, without limitation.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A gas-liquid separation system, comprising: a plurality of gas-liquid separation devices and liquid pipelines, wherein,
the inlet of the gas-liquid separation device is connected with one outlet of the electrolytic tank, the first outlet of the gas-liquid separation device is connected with the liquid pipeline, and the liquid pipeline is connected with the inlet of the electrolytic tank;
the gas-liquid separation device separates a first gas-liquid mixture discharged from the electrolytic tank into a second gas-liquid mixture and electrolyte, discharges the second gas-liquid mixture through a second outlet of the gas-liquid separation device, and carries out pressure boosting treatment on the electrolyte and then sequentially carries out unidirectional conveying back to the electrolytic tank through a first outlet of the gas-liquid separation device and the liquid pipeline.
2. The gas-liquid separation system according to claim 1, wherein each of the gas-liquid separation devices includes: a separator and a circulating pump, wherein,
the inlet of the separator is connected with one outlet of the electrolytic tank, the first outlet of the separator is connected with the first end of the circulating pump, and the separator is used for separating the first gas-liquid mixture generated by the electrolytic tank into a second gas-liquid mixture and electrolyte, and then discharging the electrolyte and the second gas-liquid mixture through the first outlet and the second outlet of the separator respectively;
the second end of the circulating pump is connected with the inlet of the electrolytic tank through the liquid pipeline and is used for boosting the electrolyte discharged from the first outlet of the separator and then conveying the electrolyte back to the electrolytic tank;
and the second end of the circulating pump in each gas-liquid separation device is connected with the liquid pipeline.
3. The gas-liquid separation system according to claim 2, wherein each of the gas-liquid separation devices further comprises: at least one first cooler, wherein,
the first cooler is used for pre-cooling the first gas-liquid mixture discharged from the electrolytic tank; or cooling the electrolyte which is not pressurized; or cooling the electrolyte after the pressure boosting.
4. The gas-liquid separation system according to claim 1, further comprising:
and a second cooler provided on the liquid pipe for cooling the electrolyte discharged from each of the gas-liquid separation devices.
5. The gas-liquid separation system according to claim 1, further comprising:
the first inlet of the water washing tower is connected with the second outlet of the gas-liquid separation device, the second inlet of the water washing tower is used for inputting cooling water, the water washing tower is used for washing and cooling the second gas-liquid mixture, the first gas is obtained after the electrolyte in the second gas-liquid mixture is removed, and the first gas is discharged through the outlet of the water washing tower.
6. A gas-liquid separation system according to claim 5, wherein,
and the water washing towers are internally provided with fillers for increasing the contact area between the second gas-liquid mixture and cooling water.
7. The gas-liquid separation system according to claim 5, further comprising:
and the inlet of the third cooler is connected with the outlet of the water scrubber, and the third cooler is used for cooling the first gas by using cooling water to remove saturated water and then discharging the cooled first gas through the outlet of the third cooler.
8. The gas-liquid separation system according to claim 7, further comprising:
and the demister is arranged at the outlet of the third cooler and is used for filtering out condensed water in the cooled first gas.
9. An electrolytic hydrogen production device, characterized by comprising two gas-liquid separation systems and an electrolytic tank as claimed in any one of claims 1 to 8, wherein,
the anode plate and the cathode plate of the electrolytic tank are respectively connected with the anode and the cathode of an external power supply, the first outlet and the second outlet of the electrolytic tank are respectively connected with the inlets of the two gas-liquid separation devices, the inlets of the electrolytic tank are connected with the first outlets of the two gas-liquid separation devices through the liquid pipelines, the electrolytic tank is used for respectively conveying the generated hydrogen gas-liquid mixture and oxygen gas mixture into the two gas-liquid separation devices through the first outlets and the second outlets after electrolyzing the internal electrolyte, and the electrolyte which is separated by the two gas-liquid separation systems and is boosted is recovered through the liquid pipelines and flows into the inlets of the two gas-liquid separation devices in a unidirectional manner.
10. The electrolytic hydrogen production device according to claim 9, wherein,
the electrolytic tank is powered by a direct current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311498120.4A CN117230489A (en) | 2023-11-10 | 2023-11-10 | Gas-liquid separation system and electrolytic hydrogen production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311498120.4A CN117230489A (en) | 2023-11-10 | 2023-11-10 | Gas-liquid separation system and electrolytic hydrogen production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117230489A true CN117230489A (en) | 2023-12-15 |
Family
ID=89098628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311498120.4A Pending CN117230489A (en) | 2023-11-10 | 2023-11-10 | Gas-liquid separation system and electrolytic hydrogen production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117230489A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119885A (en) * | 2016-07-26 | 2016-11-16 | 扬州中电制氢设备有限公司 | A kind of aqueous slkali electrolysis hydrogen production device and hydrogen production process |
| CN108791030A (en) * | 2018-07-23 | 2018-11-13 | 成都客车股份有限公司 | Road surface dust suppression system and hydrogen cell automobile for hydrogen cell automobile |
| CN113430534A (en) * | 2021-06-23 | 2021-09-24 | 阳光电源股份有限公司 | Hydrogen production method, hydrogen production system, hydrogen production electrolyte circulation method and hydrogen production electrolyte circulation device |
| CN114774946A (en) * | 2022-05-10 | 2022-07-22 | 上海嘉氢源科技有限公司 | Two-step water electrolysis hydrogen production device based on three-electrode system and application thereof |
| CN217973424U (en) * | 2022-09-19 | 2022-12-06 | 青岛创启信德新能源科技有限公司 | Low-pressure alkaline water electrolysis hydrogen production device |
| CN219315090U (en) * | 2022-11-21 | 2023-07-07 | 无锡隆基氢能科技有限公司 | Water electrolysis hydrogen production does not have waste liquid discharge system |
| CN116970968A (en) * | 2023-08-03 | 2023-10-31 | 北京海望氢能科技有限公司 | Electrolytic hydrogen production system |
-
2023
- 2023-11-10 CN CN202311498120.4A patent/CN117230489A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119885A (en) * | 2016-07-26 | 2016-11-16 | 扬州中电制氢设备有限公司 | A kind of aqueous slkali electrolysis hydrogen production device and hydrogen production process |
| CN108791030A (en) * | 2018-07-23 | 2018-11-13 | 成都客车股份有限公司 | Road surface dust suppression system and hydrogen cell automobile for hydrogen cell automobile |
| CN113430534A (en) * | 2021-06-23 | 2021-09-24 | 阳光电源股份有限公司 | Hydrogen production method, hydrogen production system, hydrogen production electrolyte circulation method and hydrogen production electrolyte circulation device |
| CN114774946A (en) * | 2022-05-10 | 2022-07-22 | 上海嘉氢源科技有限公司 | Two-step water electrolysis hydrogen production device based on three-electrode system and application thereof |
| CN217973424U (en) * | 2022-09-19 | 2022-12-06 | 青岛创启信德新能源科技有限公司 | Low-pressure alkaline water electrolysis hydrogen production device |
| CN219315090U (en) * | 2022-11-21 | 2023-07-07 | 无锡隆基氢能科技有限公司 | Water electrolysis hydrogen production does not have waste liquid discharge system |
| CN116970968A (en) * | 2023-08-03 | 2023-10-31 | 北京海望氢能科技有限公司 | Electrolytic hydrogen production system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11479868B2 (en) | Electrolytic device | |
| US4282187A (en) | Production of synthetic hydrocarbons from air, water and low cost electrical power | |
| CN110965069B (en) | Apparatus and method for producing high-purity hydrogen and/or oxygen by electrolyzing water | |
| CN215085877U (en) | Gas-liquid separation integrated device in hydrogen production system | |
| US4339547A (en) | Production of synthetic hydrocarbons from air, water and low cost electrical power | |
| CN208939084U (en) | A kind of fuel cell system using online hydrogen supply based on water self-loopa | |
| EP2589425B1 (en) | Stripping and purifying tower for an electrolytic generator and method thereof | |
| CN117230489A (en) | Gas-liquid separation system and electrolytic hydrogen production device | |
| CN102086522A (en) | Hydrogen/oxygen separator washing device | |
| CN116970968A (en) | Electrolytic hydrogen production system | |
| CN218088976U (en) | Container formula synthetic ammonia system | |
| CN219314576U (en) | Integrated gas treatment equipment and water electrolysis system | |
| JP6727984B2 (en) | Electrolysis device | |
| CN114934278B (en) | Device and method for inducing bubbles to aggregate and improving electrolysis efficiency by utilizing microfibers | |
| CN216712257U (en) | Coal fired power plant carbon capture coupling water electrolysis hydrogen production coproduction chemical industry strain system | |
| CN201942758U (en) | Cleaning device for hydrogen-oxygen separator | |
| CN220224362U (en) | Device for removing crude hydrogen alkali fog of electrolytic tank | |
| CN104086356A (en) | Device and process for separating difluoromethane and hydrogen chloride by dry method | |
| CN110124751A (en) | A kind of catalyst recycles the system and method for coproduction electricity simultaneously | |
| CN220788817U (en) | Electrolytic hydrogen production system | |
| CN220276644U (en) | Water washing tower and gas-liquid separation system | |
| CN214345544U (en) | Filler absorption tower | |
| CN219886195U (en) | Device for preparing formic acid and hydrogen | |
| US20220290317A1 (en) | Electrolyser system of water electrolysis and process therefor | |
| CN211078973U (en) | Acetylene gas washing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |