Ultralow-dew-point compression filtering type trace water capturing water electrolysis cavity structure and ultralow-dew-point dehumidifier system

Abstract

The invention discloses an ultra-low dew point compression filtering type trace water capturing water electrolysis cavity structure which comprises an electrolysis cavity and at least one trace water capturing electrolysis assembly. The electrolysis cavity is provided with an air inlet and an air outlet; the trace water capturing and electrolyzing assemblies are sequentially arranged in the electrolyzing cavity in the airflow direction; the trace water capture electrolysis assembly comprises a laminated electrode and fixed barriers tightly pressed on two sides of the laminated electrode, and the laminated electrode comprises a plurality of positive plates and negative plates which are alternately laminated; the fixed barriers are separated from the laminated electrodes through diaphragms, and the adjacent positive plates and negative plates are separated through diaphragms; wherein the positive plate and / or the negative plate are / is prepared from a porous conductive material, and the pore diameter of the porous conductive material is 50-100 microns. The invention further discloses a dehumidifier system comprising the water electrolysis cavity structure. According to the ultra-low dew point compression filtering type trace water capturing water electrolysis cavity structure disclosed by the invention, trace water in gas can be adsorbed and decomposed in an electrolysis manner, so that the trace water in the gas is effectively removed.

Description

Technical Field

[0001] The present invention relates to the technical field of water removal, and in particular to an ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure and an ultra-low dew point dehumidifier system. Background Art

[0002] In the production process of integrated circuits and semiconductors, high-purity gases are needed as carrier gases and protective gases. The concentration of trace water vapor in high-purity gases is an important technical parameter in industrial production. The presence of water vapor will affect the production of semiconductors. Even if the residual water vapor content in the gas is at the ppb level, it will affect the optical and electrochemical properties of the product. The international semiconductor industry production requires that the volume fraction of water vapor in high-purity gases must be controlled within 100×10 -9 Therefore, the water vapor concentration must be monitored and controlled in real time to avoid the adverse effects of moisture on the yield and product performance of semiconductor devices.

[0003] In the production process of lithium batteries, the water vapor content in the environment also needs to be strictly controlled. This is because the positive and negative active materials of lithium batteries are mostly micron or nanometer particles, which are very easy to absorb moisture in the air and deliquesce. The pH value of the positive electrode material is mostly high, especially the ternary or binary materials with high Ni content, whose specific surface area is also large, and the material surface is very easy to absorb moisture and react. Similarly, there are carbonyl groups with large electronegativity and metastable double bonds in the molecular structure of the electrolyte, which are easy to react with polar H2O molecules to form complexes or react to generate corresponding alcohols, and the higher the temperature, the faster the reaction. And the solute lithium salt of the electrolyte is also easy to absorb water and react with water. Therefore, in the production process of lithium batteries, the loss of control or coarsening of water will lead to excessive water in the battery, which can not only lead to the decomposition of electrolyte lithium salts, but also have a bad effect on the film formation and stability of positive and negative electrode materials, resulting in a more obvious deterioration of the electrochemical characteristics of lithium-ion batteries, such as capacity, internal resistance, and product characteristics.

[0004] However, in the prior art, there is still a lack of effective methods for removing trace moisture in gas. It is difficult to remove trace moisture in gas, whether by heating or adsorption. Summary of the invention

[0005] The purpose of the present invention is to provide an ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure, which can adsorb and decompose trace water in the gas by electrolysis, thereby effectively removing trace water in the gas.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The first aspect of the present invention provides an ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure, comprising:

[0008] an electrolysis chamber, the electrolysis chamber having an air inlet and an air outlet; and

[0009] At least one trace water capture electrolytic assembly is sequentially arranged in the electrolytic chamber along the airflow direction; the trace water capture electrolytic assembly comprises a laminated electrode and a fixed fence pressed tightly on both sides of the laminated electrode, the laminated electrode comprises a plurality of positive plates and negative plates alternately stacked; the fixed fence and the laminated electrode, and the adjacent positive plates and negative plates are separated by a diaphragm;

[0010] Wherein, the positive electrode plate and / or the negative electrode plate is made of a porous conductive material, and the pore size of the porous conductive material is between 50-100 μm.

[0011] Furthermore, the porous conductive material includes at least one of stainless steel mesh, copper mesh, aluminum mesh, nickel mesh, foam copper, foam nickel, and carbon cloth.

[0012] Furthermore, the surfaces of the positive plate and the negative plate are sprayed with a catalyst coating, and the catalyst in the catalyst coating is at least one of a multi-element alloy catalyst and Raney nickel;

[0013] The spraying amount of the catalyst coating on the surface of the positive plate and the negative plate is 200-300g / m 2 .

[0014] Furthermore, the diaphragm includes at least one of a polypropylene meltblown cloth, a polysulfone diaphragm, an ion exchange membrane and a polyphenylene sulfide diaphragm.

[0015] Furthermore, both sides of the diaphragm are coated with a polymer coating, wherein the polymer coating contains a polymer and nano-ceramic particles;

[0016] Wherein, the high molecular polymer includes at least one of polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene copolymer, and polymethyl methacrylate; the nano-ceramic particles include at least one of nano-Al2O3, nano-SiO2, nano-TiO2, nano-ZrO2, nano-CeO2, nano-MgO, nano-ZnO, and nano-NiO.

[0017] Furthermore, the fixed fence is a grid-shaped pressing plate made of stainless steel or polytetrafluoroethylene; and / or,

[0018] A concave-convex structure is formed on the fixed fence.

[0019] Further, the laminated electrode comprises 6-8 layers of positive plates and negative plates alternately stacked; and / or,

[0020] The positive electrode plate and the negative electrode plate are both formed with tabs.

[0021] Furthermore, in the electrolysis chamber, a surface cooler is provided between two adjacent trace water capture electrolysis components; and / or,

[0022] A fan is provided at the air outlet.

[0023] The second aspect of the present invention provides a method for removing trace water in gas by using the ultra-low dew point tight pressure filtration type trace water capture water electrolysis chamber structure, comprising the following steps:

[0024] S1. Connecting the positive plate and the negative plate in the trace water capture electrolytic assembly to the positive and negative electrodes of an external power source, respectively;

[0025] S2. Start the fan at the air outlet of the electrolytic chamber, so that the gas containing trace water enters the electrolytic chamber from the air inlet and flows through the at least one trace water capture electrolytic component in sequence;

[0026] S3. Collecting gas at the air outlet to obtain gas with trace amounts of water removed.

[0027] Furthermore, in step S1, in the trace water capture electrolytic assembly, the voltage between adjacent positive plates and negative plates is 1.23-5V.

[0028] A third aspect of the present invention provides a dehumidifier system with an ultra-low dew point, compressed filtration type trace water capture water electrolysis chamber structure, wherein the dehumidifier system comprises the ultra-low dew point, compressed filtration type trace water capture water electrolysis chamber structure.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure provided by the present invention comprises a plurality of trace water capture electrolysis components and a surface cooler, wherein the trace water capture electrolysis component is composed of a laminated electrode and a diaphragm, and a trace water electrolysis reaction can occur under the action of an external power source. When the device is working, gas with trace water enters the electrolysis chamber from the air inlet, and when flowing in the electrolysis chamber, trace water is adsorbed by the positive plate and the negative plate in the trace water capture electrolysis component, and then trace water electrolysis occurs under the action of the current, so that the trace water is removed; further, during the process of gas flowing in the electrolysis chamber, it fully contacts the low-temperature coil fins in the surface cooler, and when the temperature drops below the dew point temperature of the gas, the water vapor carried in the gas begins to condense and gradually reaches a saturated state, thereby further reducing the absolute water content in the gas. After comprehensive treatment by multi-stage trace water capture electrolytic components and surface coolers, most of the trace water in the gas is captured and removed, and then discharged from the air outlet at the tail of the electrolytic chamber. At this time, the dew point of the outflowing gas is as low as -65℃ to -120℃. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of the ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure of the present invention;

[0032] Figure 2 Schematic diagram of the structure of the electrolytic component for trace water capture;

[0033] Figure 3 A schematic diagram of the structure of a dehumidifier system according to an embodiment of the present invention;

[0034] Among them: 1. Electrolytic chamber; 11. Air inlet; 12. Air outlet; 13. Fan; 2. Trace water capture electrolytic component; 21. Laminated electrode; 211. Positive plate; 212. Negative plate; 213. Diaphragm; 214. Positive ear; 215. Negative ear; 22. Fixed fence; 221. Concave-convex structure; 3. Surface cooler; 4. Fresh air dehumidification system; 41. Primary filter; 42. Fresh air surface cooler; 43. Front impeller; 44. Processing fan; 45. Medium efficiency filter; 46. Medium surface cooler; 47. Rear impeller; 48. Rear surface cooler; 49. Pipeline; 50. Air valve; 51. Regeneration heater; 52. Regeneration fan; 6. Drying room; 7. PLC controller. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings and embodiments of the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] As described in the background technology, in the fields of semiconductor manufacturing and lithium battery manufacturing, there are strict requirements for the moisture content in the gas. The presence of trace moisture in the gas may have an adverse effect on the production and product performance of semiconductors and lithium batteries. However, there is a lack of effective methods for removing trace moisture in the gas in the prior art.

[0038] In response to this technical problem, the present invention provides an ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure, which can adsorb and decompose trace water in the gas by electrolysis, thereby effectively removing trace water in the gas.

[0039] Specifically, the present invention provides an ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure, which includes an electrolysis chamber 1 and a trace water capture electrolysis component 2 arranged in the electrolysis chamber 1.

[0040] See also Figure 1 The electrolytic chamber 1 has an air inlet 11 and an air outlet 12, which are used for air intake and air outlet, respectively. A fan 13 can be provided at the air outlet 12. After the fan 13 is started, a negative pressure is formed in the electrolytic chamber 1, and the gas can automatically flow into the electrolytic chamber 1 from the air inlet 11 and then flow out from the air outlet 12. A wind valve 50 can be provided at the air inlet 11 to control the air intake of the electrolytic chamber 1.

[0041] At least one trace water capture electrolysis component 2 is also provided in the electrolysis chamber 1. The function of the trace water capture electrolysis component 2 is to capture trace water carried in the gas and electrolyze it, thereby reducing the dew point of the gas. In some preferred embodiments, there are multiple trace water capture electrolysis components 2, and the multiple trace water capture electrolysis components 2 are sequentially arranged in the electrolysis chamber 1 along the airflow direction.

[0042] See also Figure 2, the trace water capture electrolytic assembly 2 includes a laminated electrode 21 and a diaphragm 213, wherein the laminated electrode 21 is obtained by alternately stacking a plurality of positive plates 211 and negative plates 212, and adjacent positive plates 211 and negative plates 212 are separated by the diaphragm 213. In the present invention, the number of positive plates 211 and negative plates 212 in the laminated electrode 21 is not limited and can be set as needed. In a preferred embodiment, the laminated electrode 21 is obtained by alternately stacking 6 to 8 positive plates 211 and negative plates 212, that is, the laminated electrode 21 includes 3 positive plates 211 + 3 negative plates 212, or includes 4 positive plates 211 + 4 negative plates 212.

[0043] In the present invention, the function of the positive plate 211 and the negative plate 212 is to adsorb trace moisture in the gas and produce an electrolytic reaction under the action of the current. The plate is the place where the electrochemical reaction occurs and is the key to determining the efficiency of water decomposition. It is necessary to have requirements such as high temperature resistance, alkali resistance, and large surface area. Therefore, the positive plate 211 and the negative plate 212 in the present invention are preferably prepared from porous conductive materials, and the porous material has a large specific surface area, which is conducive to improving the efficiency of the catalytic reaction. Preferably, the pore size of the porous conductive material is between 50-100um, for example, it can be 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, etc., but it is not limited to the listed values, and other unlisted values ​​or ranges within the numerical range are also applicable.

[0044] In some embodiments of the present invention, the porous conductive material includes but is not limited to at least one of stainless steel mesh, copper mesh, aluminum mesh, nickel mesh, foam copper, foam nickel, and carbon cloth. Such materials not only have good electrical conductivity, but also have a high specific surface area.

[0045] Carbon cloth is a kind of carbon fiber fabric made by carbonization baking or weaving of pre-oxidized polyacrylonitrile (PAN) fiber fabric, and its main component is carbon. Carbon cloth not only has the inherent intrinsic properties of carbon materials, but also has the flexibility and processability of textile fibers. It has a series of excellent characteristics such as high specific strength, low density, good thermal stability and chemical stability. However, due to its smooth surface, small specific surface area, and chemical inertness, in actual operation, carbon cloth is rarely used directly as an electrode material. It is often necessary to pretreat the surface to remove the glue and oil attached to the surface of the carbon cloth and improve its surface activity. In some embodiments, the above-mentioned pretreatment method may be: soaking the carbon cloth in a mixed solution of acetone and ethanol at a temperature of 30°C for 15 minutes, and then drying it at 60°C in a vacuum drying oven overnight to remove residual ethanol and acetone. Then, immerse the dried carbon cloth in a 1:1 (H2SO4:H2O, volume ratio) sulfuric acid solution for 1 hour, and then wash the carbon cloth with deionized water until neutral. Finally, the pretreated carbon cloth is vacuum dried overnight at 60°C.

[0046] In some preferred embodiments, the porous conductive material is a nickel-based metal porous material, such as nickel mesh, nickel foam, etc., because nickel has strong high temperature resistance and alkali corrosion resistance and relatively low cost. More preferably, the porous conductive material is nickel foam.

[0047] Nickel foam is a sponge-like porous metal nickel material, which not only has a very low specific gravity, but also has a very large specific surface area, and is one of the best materials for making electrodes. Since the surface of the nickel foam has been oxidized to form an oxide layer, it is preferably pre-treated before use to remove the oxide layer on the surface and improve the reaction activity. In some embodiments, the method of the above-mentioned pretreatment may be: the nickel foam is cut into a desired size, immersed in a 3.0mol / L HCl solution for 20 minutes, and the oxide layer on the surface is removed. The nickel foam is then taken out, repeatedly rinsed with anhydrous ethanol and ultrapure water, and after drying naturally, immersed in anhydrous ethanol for standby use.

[0048] In some preferred embodiments, a catalyst coating may be applied to the surface of the positive electrode plate 211 and the negative electrode plate 212 by thermal spraying, electroplating, etc. to improve the efficiency of the electrolysis reaction. The catalyst in the catalyst coating may be at least one of a multi-element alloy catalyst and a nickel-based catalyst.

[0049] The spraying amount of the catalyst coating on the surface of the positive electrode plate 211 and the negative electrode plate 212 is preferably 200 to 300 g / m 2 , for example, it can be 200g / m 2 , 210g / m 2 , 220g / m 2 , 230g / m 2 , 240g / m 2 , 250g / m 2 , 260g / m 2 , 270g / m 2 , 280g / m 2 , 290g / m 2 , 300g / m 2 And so on, but it is not limited to the listed values, and other unlisted values ​​or ranges within the numerical range are also applicable.

[0050] In the above catalyst coating, the catalyst used is preferably Raney Nickel. Raney Nickel is an alloy composed of nickel and aluminum, which is made into a porous catalyst by a specific chemical treatment method. The preparation of Raney Nickel usually involves mixing and fusing nickel and aluminum in a certain proportion to form an alloy, and then quenching and crushing to obtain fine particles. Generally, 80 / 20 Raney Nickel is used, that is, 80% nickel and 20% aluminum.

[0051] After the Raney nickel coating is sprayed by thermal spraying, it is preferably activated by a strong alkaline solution (such as sodium hydroxide) to remove the aluminum in the Raney nickel by reaction. As the aluminum in the coating is reacted, the surface of the coating will show a bumpy morphology, which can also increase the specific surface area of ​​the electrode, thereby improving the electrolysis efficiency.

[0052] The function of the separator 213 is to separate the positive electrode plate 211 from the negative electrode plate 212 and maintain the insulation between the positive electrode plate 211 and the negative electrode plate 212. The material of the separator 213 includes but is not limited to at least one of polypropylene melt-blown cloth, polysulfone separator 213, ion exchange membrane and polyphenylene sulfide separator 213. Preferably, the separator 213 is polypropylene melt-blown cloth, and the polypropylene melt-blown cloth is activated by potassium hydroxide solution before use.

[0053] In some embodiments of the present invention, both sides of the membrane 213 are coated with a polymer coating, and the polymer coating contains a polymer and nano-ceramic particles. The polymer coating has a high specific surface area and can adsorb trace water in the gas. On the other hand, it can improve the ion conduction efficiency and reduce the internal resistance.

[0054] In the present invention, the above-mentioned high molecular polymer includes but is not limited to at least one of polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene copolymer, and polymethyl methacrylate. The above-mentioned nano ceramic particles include at least one of nano Al2O3, nano SiO2, nano TiO2, nano ZrO2, nano CeO2, nano MgO, nano ZnO, and nano NiO, and the average particle size of the nano ceramic particles is 10 to 100 nm, for example, 10 nm, 20 nm, 30 nm, 40 nm, 50 nm, 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, etc., but is not limited to the listed values, and other values ​​or ranges not listed within the numerical range are also applicable.

[0055] In some embodiments of the present invention, the composition of the polymer coating is as follows: 95% to 98% of polymer and 2% to 5% of nano-ceramic particles, by mass percentage. The content of the polymer can be 95%, 96%, 97%, 98%, etc., and the content of the nano-ceramic particles can be 2%, 3%, 4%, 5%, etc., but are not limited to the listed values, and other values ​​or ranges not listed within the numerical range are also applicable.

[0056] Since the laminated electrode 21 and the diaphragm 213 are relatively soft, in the present invention, fixed fences 22 are provided on both sides of the laminated electrode 21 to press against the two sides of the laminated electrode 21, thereby relatively fixing the laminated electrode 21. The fixed fences 22 are in a grid shape as a whole, so that various parts of the laminated electrode 21 can be pressed and fixed well, and the gas can smoothly pass through the fixed fences 22 into the laminated electrode 21. In some preferred embodiments, a plurality of concave-convex structures 221 are formed on the fixed fences 22, and the presence of these concave-convex structures 221 can better press the laminated electrode 21.

[0057] In the present invention, the fixed fence 22 is preferably made of corrosion-resistant materials, including but not limited to stainless steel, polytetrafluoroethylene and the like.

[0058] In some embodiments of the present invention, in the laminated electrode 21, each positive electrode plate 211 and each negative electrode plate 212 are provided with a tab, which is connected to an external power source through a wire. Preferably, in the laminated electrode 21, the positive tab 214 on each positive electrode plate 211 is provided at the same position of the positive electrode plate 211, and the negative tab 215 on each negative electrode plate 212 is provided at the same position of the negative electrode plate 212, so as to facilitate the connection of multiple positive tabs 214 / negative tabs 215 with an external power source.

[0059] In some embodiments of the present invention, one or more surface coolers 3 are further provided in the electrolysis chamber 1. The function of the surface cooler 3 is to condense the gas, thereby further reducing the moisture content in the gas and increasing the dew point. When the air passes through the surface cooler 3, it is fully in contact with the low-temperature coil fins. When the temperature drops below the dew point temperature of the air, the water vapor in the air begins to condense and gradually reaches a saturated state, thereby reducing the absolute water content of the air. Preferably, there are multiple surface coolers 3, and a surface cooler 3 is provided between two adjacent trace water capture electrolysis components 2.

[0060] Furthermore, the present invention also provides a method for removing trace water in gas using the ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure, comprising the following steps:

[0061] S1. The positive plate 211 and the negative plate 212 of the trace water capture electrolytic assembly 2 are connected to the positive and negative electrodes of the external power supply respectively;

[0062] S2. Start the fan 13 at the air outlet 12 of the electrolytic chamber 1, so that the gas containing trace water enters the electrolytic chamber 1 from the air inlet 11, and sequentially flows through the at least one trace water capture electrolytic component 2;

[0063] S3. Collecting gas at the air outlet 12 to obtain gas with trace amounts of water removed.

[0064] In step S1 of the present invention, the voltage between adjacent positive plates 211 and negative plates 212 in the trace water capture electrolytic component 2 is preferably set at an adjustable voltage of 1.23 to 5 V, for example, it can be 1.23 V, 1.3 V, 1.5 V, 1.6 V, 1.8 V, 2.0 V, 2.5 V, 3.0 V, 3.5 V, 4.0 V, 4.5 V, 5.0 V, etc., but is not limited to the listed values, and other unlisted values ​​or ranges within the numerical range are also applicable.

[0065] In step S2 of the present invention, the dew point of the gas entering the electrolytic chamber 1 from the air inlet 11 is above -65°C; after being treated, the dew point of the gas flowing out from the air outlet 12 is between -65°C and -120°C.

[0066] The principle of removing trace water from gas in the present invention is as follows: gas with trace water enters the electrolysis chamber 1 from the air inlet 11. When flowing in the electrolysis chamber 1, the trace water is adsorbed by the positive plate 211 and the negative plate 212 in the trace water capture electrolysis assembly 2, and then electrolysis occurs under the action of the current, thereby removing the trace water; further, during the flow of the gas in the electrolysis chamber 1, the gas is fully in contact with the low-temperature coil fins in the surface cooler 3. When the temperature drops below the dew point temperature of the gas, the water vapor carried in the gas begins to condense and gradually reaches a saturated state, thereby further reducing the absolute water content in the gas. After comprehensive treatment by the multi-stage trace water capture electrolysis assembly 2 and the surface cooler 3, most of the trace water in the gas is captured and removed, and is drained from the air outlet 12 at the tail of the electrolysis chamber 1. At this time, the dew point of the outflowing gas is as low as -65°C to -120°C.

[0067] The ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure provided by the present invention can be used in conjunction with various dehumidification devices and applied to dehumidifier systems to further improve the dehumidification effect.

[0068] See also Figure 3 , which is a structural schematic diagram of a dehumidifier system provided by an embodiment of the present invention. In this embodiment, after the ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure of the present invention is connected in series to the fresh air dehumidification system 4, the air dew point can be reduced to between -65 and -120°C.

[0069] Specifically, the fresh air dehumidification system 4 includes a primary filter 41, a fresh air cooler 42, a front impeller 43, a processing fan 44, a medium filter 45, a medium cooler 46, a rear impeller 47 and a rear cooler 48 connected in series, wherein these processing units are connected through a pipeline 49. An air valve 50 is provided before the primary filter 41. After the air valve 50 is activated, the fresh air enters the fresh air dehumidification system 4 through the pipeline 49 and passes through each processing unit in sequence. The front impeller 43 is a silica gel impeller, and the rear impeller 47 is a silica gel / molecular sieve composite impeller, which can dehumidify and dry the gas.

[0070] After being processed by the after cooler 48, the fresh air enters the ultra-low dew point compressed filter type trace water capture water electrolysis chamber structure to continue the dehumidification process. The dew point of the treated fresh air reaches between -65 and -120°C, and then it is passed into the drying room 6 through the pipe 49.

[0071] The fresh air dehumidification system 4 provided in this embodiment also includes a return air system. Specifically, the drying room 6 can be connected between the front impeller 43 and the processing fan 44 through a pipeline 49, and a wind valve 50 is provided on the pipeline 49. The air in the drying room 6 can flow into the fresh air dehumidification system 4 through the pipeline 49, which can replenish air to the fresh air dehumidification system 4 on the one hand, realizing full utilization of air; on the other hand, it can also keep the drying room 6 in a low dew point state at all times.

[0072] The fresh air dehumidification system 4 provided in this embodiment also includes an air outlet system, which includes a two-stage regeneration heater 51 and a regeneration fan 52, which is used to discharge part of the dry air out of the dehumidifier system. In addition, the fresh air dehumidification system 4 is also provided with a PLC controller 7, which is used to control the adjustment of various electrical components in the fresh air dehumidification system 4 and the opening and closing of valves.

[0073] In addition, detectors A to J are provided on each pipe 49 to monitor parameters such as air volume, temperature, and humidity at each pipe 49 . The specific results are shown in Table 1.

[0074] Table 1

[0075] Average summer conditions A B B1 C D E F G H J <![CDATA[Air volume (m 3 / h)]]> 6300 6300 6300 31300 31300 3300 28000 28000 28000 25000 Temperature(℃) 35 13 40 27 12 12 16 13 16 15 Relative humidity (%) 80 94.99 5.6 2.5 6.5 6.5 0.06 0.1 0.03 0.03 Moisture content (g / Kg) 29.3 8.3 2 0.56 0.56 0.56 0.044 0.044 0.003 0.0033 Dew point temperature(℃) 28.7 12.2 -5.3 -21 -21 -21 -45 -45 -70 -70

[0076] In summary, the present invention provides an ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure, which can adsorb and decompose trace water in the gas by electrolysis, thereby effectively removing trace water in the gas.

[0077] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure, characterized in that: include: An electrolytic chamber, wherein the electrolytic chamber has an air inlet and an air outlet; as well as At least one trace water capture electrolytic component is sequentially arranged in the electrolytic chamber along the airflow direction; The trace water capture electrolytic assembly comprises a laminated electrode and fixed partitions pressed tightly on both sides of the laminated electrode, wherein the laminated electrode comprises a plurality of positive plates and negative plates alternately stacked; the fixed partitions and the laminated electrode, and the adjacent positive plates and negative plates are separated by a diaphragm; Wherein, the positive electrode plate and / or the negative electrode plate is made of a porous conductive material, and the pore size of the porous conductive material is between 50-100 μm.

2. The ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure according to claim 1 is characterized in that: The porous conductive material includes at least one of stainless steel mesh, copper mesh, aluminum mesh, nickel mesh, foam copper, foam nickel, and carbon cloth.

3. The ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure according to claim 2 is characterized in that: The surfaces of the positive plate and the negative plate are also sprayed with a catalyst coating, and the catalyst in the catalyst coating is at least one of a multi-element alloy catalyst and Raney nickel; The spraying amount of the catalyst coating on the surface of the positive plate and the negative plate is 200-300g / m 2 .

4. The ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure according to claim 1, characterized in that: The diaphragm includes at least one of a polypropylene meltblown cloth, a polysulfone diaphragm, an ion exchange membrane and a polyphenylene sulfide diaphragm.

5. The ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure according to claim 4 is characterized in that: Both sides of the diaphragm are coated with a polymer coating, wherein the polymer coating contains a polymer and nano-ceramic particles; Wherein, the high molecular polymer includes at least one of polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene copolymer, and polymethyl methacrylate; the nano-ceramic particles include at least one of nano-Al2O3, nano-SiO2, nano-TiO2, nano-ZrO2, nano-CeO2, nano-MgO, nano-ZnO, and nano-NiO.

6. The ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure according to claim 1, characterized in that: The fixed fence is a grid-shaped pressing plate made of stainless steel or polytetrafluoroethylene; and / or, A concave-convex structure is formed on the fixed fence.

7. The ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure according to claim 1, characterized in that: The laminated electrode comprises 6-8 layers of positive plates and negative plates alternately stacked; and / or, The positive electrode plate and the negative electrode plate are both formed with pole lugs; and / or, In the electrolysis chamber, a surface cooler is further provided between two adjacent trace water capture electrolysis components; and / or, A fan is provided at the air outlet.

8. A method for removing trace water from gas using the ultra-low dew point tight-compression filtration type trace water capture water electrolysis chamber structure according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Connecting the positive plate and the negative plate in the trace water capture electrolytic assembly to the positive and negative electrodes of an external power source, respectively; S2. Start the fan at the air outlet of the electrolytic chamber, so that the gas containing trace water enters the electrolytic chamber from the air inlet and flows through the at least one trace water capture electrolytic component in sequence; S3. Collecting gas at the air outlet to obtain gas with trace amounts of water removed.

9. The method according to claim 8, characterized in that In step S1, in the trace water capture electrolytic assembly, the voltage between adjacent positive and negative plates is 1.23-5V.

10. An ultra-low dew point dehumidifier system, characterized in that: The ultra-low dew point dehumidifier system comprises the ultra-low dew point compressed filtration type trace water capture water electrolysis chamber structure as described in any one of claims 1 to 7.

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