An integrated ultra-low deuterium water preparation device

Abstract

The integrated ultra-low deuterium water preparation device provided in this application includes at least two electrolytic catalytic exchange units connected in series. An external water source is connected to one of the electrolytic catalytic exchange units and enters the unit to generate low-deuterium water. The low-deuterium water then enters the other electrolytic catalytic exchange unit to generate ultra-low deuterium water. Each electrolytic catalytic exchange unit includes a catalytic exchange component, a water electrolysis component, and a hydrogen fuel cell component. Hydrogen and water entering the catalytic exchange component undergo a water-hydrogen hydrogen isotope exchange reaction to generate low-deuterium hydrogen or ultra-low deuterium hydrogen. Water from the catalytic exchange component flows into the water electrolysis component and is electrolyzed to generate hydrogen and oxygen. The low-deuterium hydrogen or ultra-low deuterium hydrogen generated in the catalytic exchange component enters the hydrogen fuel cell component for electrochemical recombination to generate low-deuterium water or ultra-low deuterium water.

Description

Technical Field

[0001] This application relates to the field of preparation technology, and in particular to an integrated ultra-low deuterium water preparation device. Background Technology

[0002] This section is intended to provide background or context for the embodiments described in this application. The description herein is not intended to be a prior art simply because it is included in this section.

[0003] Ultra-low deuterium water has a sufficiently low deuterium content, resulting in a particularly significant anti-tumor effect. It also possesses antioxidant, anti-aging, and anti-radiation properties, and can enhance vascular reactivity, promoting adrenaline- and angiotensin-induced vasoconstriction response, thus regulating vasodilation and vasoconstriction. Currently, commercially available ultra-low deuterium water is primarily bottled, with bottled water as a secondary option, leading to relatively high production, transportation, and storage costs. Summary of the Invention

[0004] In view of this, the embodiments of this application aim to provide an integrated ultra-low deuterium water preparation device suitable for medical use, which reduces the production cost, transportation and storage cost of ultra-low deuterium water.

[0005] To achieve the above objectives, this application provides an integrated ultra-low deuterium water preparation device, comprising at least two electrolytic catalytic exchange units connected in series. An external water source is connected to one of the electrolytic catalytic exchange units and enters the electrolytic catalytic exchange unit to generate low-deuterium water. The low-deuterium water then enters the other electrolytic catalytic exchange unit to generate ultra-low deuterium water.

[0006] The electrolytic catalytic exchange unit includes:

[0007] The catalytic exchange component can be connected to an external water source. Hydrogen and water entering the catalytic exchange component can undergo a water-hydrogen hydrogen isotope exchange reaction within the catalytic exchange component to generate low-deuterium hydrogen or ultra-low-deuterium hydrogen.

[0008] A water electrolysis unit is connected to the catalytic exchange unit. Water in the catalytic exchange unit flows into the water electrolysis unit and is electrolyzed in the water electrolysis unit to generate hydrogen and oxygen. The hydrogen can enter the catalytic exchange unit.

[0009] The hydrogen fuel cell assembly contains low-deuterium hydrogen or ultra-low-deuterium hydrogen generated within the catalytic exchange assembly, which is then used to recombine and generate low-deuterium water or ultra-low-deuterium water under electrochemical conditions.

[0010] In some embodiments, the electrolytic catalytic exchange unit further includes a water cooling collection and treatment component for collecting and storing the low-deuterium water or the ultra-low-deuterium water generated within the hydrogen fuel cell assembly.

[0011] In some embodiments, the electrolytic catalytic exchange unit further includes a water storage device connected to the cooling collection and processing assembly, wherein the low-deuterium water or ultra-low-deuterium water in the cooling collection and processing assembly flows into the water storage device for storage and use.

[0012] In some embodiments, the electrolytic catalytic exchange unit connected to an external water source is defined as a first electrolytic catalytic exchange unit, and another electrolytic catalytic exchange unit is defined as a second electrolytic catalytic exchange unit, wherein the water storage device of the first electrolytic catalytic exchange unit is connected to the catalytic exchange component of the second electrolytic catalytic exchange unit.

[0013] In some embodiments, the electrolytic catalytic exchange unit connected to an external water source is defined as a first electrolytic catalytic exchange unit, and another electrolytic catalytic exchange unit is defined as a second electrolytic catalytic exchange unit;

[0014] The ultra-low deuterium water preparation device further includes a metering pump connected between the first electrolytic catalytic exchange unit and the second electrolytic catalytic exchange unit; and / or, the ultra-low deuterium water preparation device further includes a one-way valve connected between the first electrolytic catalytic exchange unit and the second electrolytic catalytic exchange unit.

[0015] In some embodiments, the catalytic exchange assembly includes a catalytic exchange column, which is filled with a hydrophobic catalyst and a hydrophilic filler.

[0016] The hydrophobic catalyst includes at least one of Pt-SDB and Pt-PTFE;

[0017] In some embodiments, the hydrophilic packing is at least one of triangular spiral packing, Dixon packing, Canon packing, and calendered ring packing.

[0018] In some embodiments, the catalytic exchange assembly includes a catalytic exchange column with a diameter of 10-200 mm; and / or, the height of the catalytic exchange column is 800-2000 mm.

[0019] In some embodiments, the ultra-low deuterium water preparation device further includes a heating component disposed between the catalytic exchange component and the water electrolysis component, wherein the hydrogen gas generated by electrolysis in the water electrolysis component is heated by the heating component and then flows into the catalytic exchange component.

[0020] In some embodiments, the deuterium concentration of the ultra-low deuterium water is 0 ppm to 10 ppm.

[0021] The integrated ultra-low deuterium water preparation device provided in this application includes at least two electrolytic catalytic exchange units connected in series. An external water source is connected to one of the electrolytic catalytic exchange units and enters the unit to generate low-deuterium water. The low-deuterium water then enters the other electrolytic catalytic exchange unit to generate ultra-low deuterium water. The ultra-low deuterium water preparation device in this application employs a cascade technology, using at least two sets of electrolytic catalytic exchange units in series to improve the quality of low-deuterium or ultra-low deuterium water. The first electrolytic catalytic exchange unit dedeuterates deionized water to obtain low-deuterium water, and the second electrolytic catalytic exchange unit further dedeuterates the low-deuterium water generated by the first unit to obtain ultra-low deuterium water, thus improving the overall system's economic efficiency. Furthermore, the electrolytic catalytic exchange unit incorporates a hydrogen fuel cell assembly. Hydrogen fuel cells typically employ proton exchange membrane fuel cells (PEMFCs), which use the electrochemical reaction of hydrogen with oxygen (or air) to produce low-deuterium or ultra-low-deuterium water. In a hydrogen fuel cell, hydrogen and oxygen are located on opposite sides of the fuel cell membrane. Hydrogen ionizes and permeates through the membrane, with most of the water being low-deuterium or ultra-low-deuterium water generated on the oxygen side. Hydrogen fuel cells operate at lower temperatures, offering higher safety performance and eliminating the need for additional cooling devices, thus improving structural compactness. Moreover, the catalytic exchange assembly, water electrolysis assembly, and hydrogen fuel cell assembly are highly integrated into a single ultra-low-deuterium water production device. This device can be directly connected to municipal water supply, transforming municipal water into ultra-low-deuterium water. Its small size and high safety make it suitable for use in office buildings, conference rooms, and medical settings such as sanatoriums and rehabilitation centers, as well as for home use, reducing the production, transportation, and storage costs of low-deuterium water. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the integrated ultra-low deuterium water preparation device in one embodiment of this application.

[0023] Explanation of reference numerals in the attached figures

[0024] 10. Catalytic exchange assembly; 20. Water electrolysis assembly; 30. Hydrogen fuel cell assembly; 40. Buffer device; 50. Condenser; 60. Gas flow meter; 70. Deionized water assembly; 80. Metering pump; 90. Heating assembly; 100. Water storage device; 110. Water cooling collection and treatment assembly; 120. First electrolysis catalytic exchange unit; 130. Second electrolysis catalytic exchange unit. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0026] Deuterium is an isotope of hydrogen, also known as heavy hydrogen. Low-deuterium water, also called deuterium-depleted water (DDW), is water where the deuterium content is expressed as an absolute ratio: D / H. Because deuterium content is generally low, it is usually expressed in ppm (parts per million). Water with a deuterium content of 150 ppm means that the ratio of deuterium atoms to hydrogen atoms in the water is 150 parts per million. Natural water typically has a deuterium content of around 150 ppm, while water with a deuterium content below 150 ppm is called low-deuterium water. Ultra-low-deuterium water usually refers to low-deuterium water with a deuterium content below 10 ppm. Water with a deuterium content below 100 ppm or less does not exist in nature. The lowest levels of low-deuterium water may be found in inland freshwater at low temperatures, high altitudes, and near the poles.

[0027] The antitumor effects of deuterium-rich water are a hot research topic in the biological effects of deuterium-rich water. The growth mechanism of cancer cells is closely related to deuterium atoms; by reducing the concentration of deuterium in the body, the growth of cancer cells can be inhibited, and apoptosis can be induced. This is of great significance for the prevention, recurrence, and metastasis of tumors. Deuterium-rich water has an inhibitory effect on the proliferation of various tumor cells and can be used as an adjuvant therapy for cancer.

[0028] Ultra-low deuterium water has a sufficiently low deuterium content, resulting in a particularly significant anti-tumor effect. It also possesses antioxidant, anti-aging, and anti-radiation properties. Furthermore, it can enhance vascular reactivity, promote adrenaline- and angiotensin-induced vasoconstriction response, and regulate vasodilation and vasoconstriction. Low-deuterium water also has a regulatory effect on the nervous system, primarily including enhanced memory and antidepressant effects.

[0029] In related technologies, ultra-low deuterium water sold in the market is mainly bottled, with bottled water as a supplement. This results in relatively high production, transportation, and storage costs for ultra-low deuterium water. Currently, the main method for preparing ultra-low deuterium water is water distillation. Water distillation is a large-scale process requiring large-scale chemical facilities, which can only be built in chemical industrial parks. Furthermore, due to limitations in electricity, steam, and raw material water availability, water distillation plants are generally located far from urban areas. Therefore, considering the production, transportation, and storage costs of ultra-low deuterium water, bottled and bottled water are relatively more expensive.

[0030] For the integrated ultra-low deuterium water preparation device provided in this application embodiment, please refer to [link to relevant documentation]. Figure 1The preparation apparatus includes at least two electrolytic catalytic exchange units connected in series. An external water source is connected to one of the electrolytic catalytic exchange units and enters it to generate deuterium-low water. The deuterium-low water then enters the other electrolytic catalytic exchange unit to generate ultra-low deuterium water. Each electrolytic catalytic exchange unit includes a catalytic exchange component 10, a water electrolysis component 20, and a hydrogen fuel cell component 30. The catalytic exchange component 10 is connected to an external water source. Hydrogen and water entering the catalytic exchange component 10 undergo a water-hydrogen hydrogen isotope exchange reaction within the catalytic exchange component 10 to generate deuterium-low or ultra-low deuterium hydrogen. The water electrolysis component 20 is connected to the catalytic exchange component 10. Water from the catalytic exchange component 10 flows into the water electrolysis component 20 and is electrolyzed within the water electrolysis component 20 to generate hydrogen and oxygen. Hydrogen can enter the catalytic exchange component 10. The low-deuterium hydrogen or ultra-low-deuterium hydrogen generated in the catalytic exchange component 10 enters the hydrogen fuel cell component 30 and is used to recombine and generate low-deuterium water or ultra-low-deuterium water under electrochemical conditions.

[0031] The system employs cascading technology, meaning at least two electrolytic catalytic exchange units are used in series. In this embodiment, the system is described as including a first electrolytic catalytic exchange unit 120 and a second electrolytic catalytic exchange unit 130 connected in series. Of course, in other embodiments, the system may include more electrolytic catalytic exchange units connected in series.

[0032] For example, the electrolytic catalytic exchange unit connected to an external water source is defined as a first electrolytic catalytic exchange unit 120, and the other electrolytic catalytic exchange unit is defined as a second electrolytic catalytic exchange unit 130. The water storage device 100 of the first electrolytic catalytic exchange unit 120 is connected to the catalytic exchange component 10 of the second electrolytic catalytic exchange unit 130.

[0033] In other words, the first electrolytic catalytic exchange unit 120 uses natural water or deionized water as raw material to produce low-deuterium water; the second electrolytic catalytic exchange unit 130 uses the low-deuterium water produced by the first electrolytic catalytic exchange unit 120 as raw material to produce ultra-low-deuterium water with even lower deuterium concentration, thereby improving the economic efficiency of the entire system.

[0034] For example, the ultra-low deuterium water preparation apparatus also includes a metering pump 80 connected between the first electrolytic catalytic exchange unit 120 and the second electrolytic catalytic exchange unit 130.

[0035] The metering pump 80 is mainly used for liquid metering. It controls the flow rate to ensure that the catalytic exchange component 10 has high activity and can stably obtain low-deuterium water or ultra-low-deuterium water.

[0036] For example, the ultra-low deuterium water preparation device also includes a one-way valve connected between the first electrolytic catalytic exchange unit 120 and the second electrolytic catalytic exchange unit 130.

[0037] The one-way valve prevents water in the second electrolytic catalytic exchange unit 130 from flowing back into the first electrolytic catalytic exchange unit 120.

[0038] The catalytic exchange component 10 is a water-hydrogen catalytic exchange component 10. Within this unit, liquid water and gaseous hydrogen undergo a hydrogen isotope exchange reaction. The hydrogen gas undergoes isotope exchange with the liquid water, transferring deuterium from the hydrogen gas into the water, thus achieving deuterium separation to obtain low-deuterium hydrogen or ultra-low-deuterium hydrogen. Under the combined action of electrolysis and water-hydrogen exchange, low-deuterium hydrogen or ultra-low-deuterium hydrogen is obtained. For example, low-deuterium hydrogen is generated in the catalytic exchange component 10 of the first electrolysis catalytic exchange unit 120, and ultra-low-deuterium hydrogen is generated in the catalytic exchange component 10 of the second electrolysis catalytic exchange unit 130.

[0039] For example, the catalytic exchange assembly 10 includes a catalytic exchange column, which is filled with a hydrophobic catalyst and a hydrophilic filler.

[0040] The hydrogen isotope exchange reaction between water and hydrogen occurs through the coupling effect of a hydrophobic catalyst and a hydrophilic packing material. This exchange reaction is mainly divided into catalytic exchange and phase exchange reactions, with the phase exchange reaction taking place on the surface of the hydrophilic packing material. The hydrophobic catalyst and hydrophilic packing material are packed inside the catalytic exchange column of the water-hydrogen exchange unit.

[0041] The hydrophobic catalyst is either random or structured, and the active component is mainly the precious metal platinum (Pt). The hydrophilic filler is either a random or structured metal filler corresponding to the catalyst being packed.

[0042] Hydrophobic catalysts can also be non-platinum catalysts, as long as they have hydrogen isotope exchange effects.

[0043] In some embodiments, the hydrophobic catalyst includes a support and an active component. The support is used to support the active component, under the action of the active component, liquid water and gaseous hydrogen undergo a hydrogen isotope exchange reaction.

[0044] It should be noted that the specific type of support can be various. Exemplarily, in some embodiments, the support is at least one of styrene-divinylbenzene copolymer (SDB), molecular sieve, and ceramic.

[0045] The term "support is at least one of styrene-divinylbenzene copolymer (SDB), molecular sieve and ceramic" means that the support can be one of styrene-divinylbenzene copolymer (SDB), molecular sieve and ceramic, or two of styrene-divinylbenzene copolymer (SDB), molecular sieve and ceramic, or simultaneously include styrene-divinylbenzene copolymer (SDB), molecular sieve and ceramic.

[0046] It should be noted that the specific type of active component can be varied. For example, in some embodiments, the active component is one of the noble metal platinum, a mixture of noble metal platinum doped with other noble metals, and a mixture of noble metal platinum doped with non-noble metal components.

[0047] For example, the hydrophobic catalyst includes at least one of Pt-SDB (polystyrene-divinylbenzene) and Pt-PTFE (polytetrafluoroethylene).

[0048] For example, the hydrophilic packing is at least one of triangular spiral packing, Dixon packing, Canon packing, and calendered ring packing.

[0049] To ensure high catalytic exchange efficiency, metal random packing needs to undergo surface degreasing, acid washing, and other processes to improve the wettability of the packing and increase its specific surface area.

[0050] Catalytic exchange columns are generally made of stainless steel and are typically tens of millimeters in diameter. Hydrophobic catalysts and hydrophilic packing materials are mixed and packed inside the exchange column.

[0051] Hydrophobic catalysts are essential materials to ensure catalytic exchange. The active component of these hydrophobic catalysts is generally the noble metal Pt, which allows for a longer replacement cycle. They can generally maintain high catalytic activity for several years, thus improving ease of use.

[0052] Hydrophilic fillers are usually made of stainless steel, but these stainless steel fillers need to be hydrophilized and mixed with hydrophobic catalysts for use.

[0053] Hydrogen fuel cells typically employ proton exchange membrane fuel cells (PEMFCs), which use an electrochemical reaction between hydrogen and oxygen (or air) to produce low-deuterium or ultra-low-deuterium water. PEMFCs are stable, reliable, and highly efficient at synthesizing hydrogen.

[0054] In a hydrogen fuel cell, hydrogen and oxygen are located on opposite sides of the fuel cell membrane. Hydrogen protons ionize and permeate through the membrane, with most of the protons forming low-deuterium or ultra-low-deuterium water on the oxygen side. Protons move within the fuel cell membrane and the fuel cell assembly, generating electricity. The electrical load generated during this process can be absorbed by the fuel cell. Furthermore, hydrogen fuel cells operate at lower temperatures, offer higher safety performance, and have a higher degree of integration.

[0055] The electrical energy generated by the hydrogen fuel cell during the hydrogen synthesis process can be used for the energy-consuming loads of the ultra-low deuterium water preparation device, such as the water electrolysis component 20, the metering pump 80, the catalytic exchange component 10 heating and other energy-consuming equipment or components.

[0056] The water electrolysis component 20 is a proton exchange membrane water electrolysis hydrogen production device, or it can be an alkaline water electrolysis or solid oxide water electrolysis device, etc. It mainly electrolyzes the water at the bottom of the catalytic exchange column to produce hydrogen or deuterium hydrogen, which enters the catalytic exchange component 10 for water hydrogen isotope exchange in the catalytic exchange column.

[0057] An integrated ultra-low deuterium water preparation device refers to a device in which multiple electrolysis catalytic exchange units can be transported or moved together. For example, the catalytic exchange component 10, the water electrolysis component 20, and the hydrogen fuel cell component 30 are installed in the same housing to form a whole, which is beneficial to improving ease of use.

[0058] The integrated ultra-low deuterium water preparation device has its functional components arranged in functional areas, and adopts a box-type structure layout.

[0059] The integrated ultra-low deuterium water preparation device provided in this application embodiment includes at least two electrolytic catalytic exchange units connected in series. An external water source is connected to one of the electrolytic catalytic exchange units and enters the unit to generate low-deuterium water. The low-deuterium water then enters the other electrolytic catalytic exchange unit to generate ultra-low deuterium water. The ultra-low deuterium water preparation device in this application embodiment employs cascade technology, using at least two sets of electrolytic catalytic exchange units in series to improve the quality of low-deuterium or ultra-low deuterium water. The first electrolytic catalytic exchange unit dedeuterates deionized water to obtain low-deuterium water, and the second electrolytic catalytic exchange unit further dedeuterates the low-deuterium water generated by the first unit to obtain ultra-low deuterium water, thus improving the overall system's economic efficiency. Furthermore, the electrolytic catalytic exchange unit incorporates a hydrogen fuel cell assembly 30. Hydrogen fuel cells typically employ proton exchange membrane fuel cells (PEMFCs), which use an electrochemical reaction between hydrogen and oxygen (or air) to produce low-deuterium or ultra-low-deuterium water. In a hydrogen fuel cell, hydrogen and oxygen are located on opposite sides of the fuel cell membrane. Hydrogen ionizes and permeates through the membrane, with most of the water being low-deuterium or ultra-low-deuterium water generated on the oxygen side. Hydrogen fuel cells operate at lower temperatures, offering higher safety performance, and do not require additional cooling devices, thus improving structural compactness. Moreover, the catalytic exchange assembly 10, water electrolysis assembly 20, and hydrogen fuel cell assembly 30 are highly integrated into a single ultra-low-deuterium water preparation device. This device can be directly connected to municipal water supply, transforming municipal water into ultra-low-deuterium water. This small and highly safe device can be placed in office buildings, conference rooms, and medical settings such as sanatoriums and rehabilitation centers, or used in homes, reducing the production, transportation, and storage costs of low-deuterium water.

[0060] In some embodiments, please refer to Figure 1The electrolytic catalytic exchange unit also includes a water cooling collection and treatment component 110 for collecting and storing low-deuterium water or ultra-low-deuterium water generated within the hydrogen fuel cell assembly 30.

[0061] A water cooling collection and treatment component 110 is provided to cool and collect the low-deuterium water or ultra-low-deuterium water generated in the hydrogen fuel cell assembly 30.

[0062] In some embodiments, please refer to Figure 1 The electrolytic catalytic exchange unit also includes a water storage device 100 connected to the cooling collection and processing component. Low-deuterium water or ultra-low-deuterium water in the cooling collection and processing component flows into the water storage device 100 for storage and use.

[0063] A water storage device 100 is provided to store low-deuterium water or ultra-low-deuterium water prepared by the ultra-low-deuterium water preparation device, which can be used at any time.

[0064] In some embodiments, please refer to Figure 1 The ultra-low deuterium water preparation device also includes a buffer device 40 connected between the catalytic exchange assembly 10 and the hydrogen fuel cell assembly 30. The low-deuterium hydrogen or ultra-low-deuterium hydrogen generated in the catalytic exchange assembly 10 enters the buffer device 40 for buffering and storage.

[0065] By setting up a buffer device 40, the low-deuterium hydrogen or ultra-low-deuterium hydrogen generated in the catalytic exchange component 10 enters the buffer device 40 for buffering and storage. In other words, the buffer device 40 mainly plays a buffering role for low-deuterium hydrogen or ultra-low-deuterium hydrogen, ensuring the stable operation of the fuel cell component.

[0066] In some embodiments, please refer to Figure 1 The ultra-low deuterium water preparation device also includes a condenser 50 connected between the catalytic exchange component 10 and the hydrogen fuel cell component 30. The low-deuterium hydrogen or ultra-low deuterium hydrogen generated in the catalytic exchange component 10 flows into the hydrogen fuel cell component 30 after passing through the condenser 50.

[0067] The specific location of the condenser 50 is not limited here. For example, the condenser 50 may be located at the top of the catalytic exchange column.

[0068] By setting up a condenser 50, the low-deuterium hydrogen or ultra-low-deuterium hydrogen gas generated in the catalytic exchange assembly 10 flows into the hydrogen fuel cell assembly 30 after passing through the condenser 50. In other words, the condenser 50 is used to cool the low-deuterium hydrogen or ultra-low-deuterium hydrogen gas discharged from the catalytic exchange assembly 10, and to cool the saturated water vapor in the low-deuterium hydrogen or ultra-low-deuterium hydrogen gas, so as to ensure the dryness of the low-deuterium hydrogen or ultra-low-deuterium hydrogen gas.

[0069] In some embodiments, please refer to Figure 1The ultra-low deuterium water preparation device also includes a gas flow meter 60, which is installed between the catalytic exchange component 10 and the hydrogen fuel cell component 30.

[0070] The gas flow meter 60 is mainly used for measuring the flow of hydrogen gas to ensure the stable operation of the hydrogen fuel cell assembly 30, thereby ensuring the synthesis efficiency of deuterium water.

[0071] In some embodiments, please refer to Figure 1 The ultra-low deuterium water preparation device also includes a gas flow meter 60, which is installed between the catalytic exchange component 10 and the water electrolysis component 20.

[0072] The gas flow meter 60 is mainly used for measuring the flow of hydrogen gas to ensure the stable operation of the hydrogen fuel cell assembly 30, thereby ensuring the separation efficiency of water-hydrogen exchange.

[0073] In some embodiments, please refer to Figure 1 The ultra-low deuterium water preparation device also includes a deionized water component 70 connected between the catalytic exchange component 10 and the external water source. The deionized water component 70 is used to convert water from the external water source into deionized water.

[0074] The deionized water component 70 is used to purify tap water into deionized water. It mainly includes filtration and adsorption treatment units such as activated carbon adsorption and reverse osmosis membrane. It is mainly composed of filter cartridges filled with corresponding materials. It can be integrated independently or integrated with the entire ultra-low deuterium water preparation device.

[0075] In some embodiments, please refer to Figure 1 The ultra-low deuterium water preparation device also includes a metering pump 80 connected between the catalytic exchange component 10 and an external water source.

[0076] The metering pump 80 is mainly used for liquid metering. It controls the flow rate to ensure that the catalytic exchange component 10 has high activity and can stably obtain low-deuterium water or ultra-low-deuterium water.

[0077] It is understandable that the catalytic exchange column needs to maintain a certain temperature to ensure a high catalytic exchange effect. Therefore, the catalytic exchange column is heated by setting the heating component 90 to keep the temperature inside the catalytic exchange column at a temperature that is more suitable for the reaction.

[0078] For example, the temperature of the catalytic exchange column is typically maintained at 50-70°C.

[0079] It should be noted that the specific method by which the heating component 90 heats the catalytic exchange column is not limited here. For example, the catalytic exchange column can be heated by circulating water or by electric heating.

[0080] In some embodiments, please refer to Figure 1The ultra-low deuterium water preparation device also includes a heating component 90 disposed between the catalytic exchange component 10 and the water electrolysis component 20. The hydrogen generated by electrolysis in the water electrolysis component 20 is heated by the heating component 90 and then flows into the catalytic exchange component 10.

[0081] It is understandable that the hydrogen generated by electrolysis in the water electrolysis component 20 is heated by the heating component 90 and then flows into the catalytic exchange component 10, which to some extent helps to maintain the catalytic exchange column at a certain temperature, thereby ensuring a high catalytic exchange effect.

[0082] In some embodiments, the hydrogen gas generated by electrolysis in the water electrolysis assembly 20 is heated to 50°C-70°C by the heating assembly 90. For example, 50°C, 55°C, 60°C, 65°C, or 70°C, etc.

[0083] The temperature within this range is roughly the same as the temperature inside the catalytic exchange column, which can further ensure that the catalytic exchange assembly 10 maintains a high catalytic exchange efficiency.

[0084] In some embodiments, please refer to Figure 1 The ultra-low deuterium water preparation device also includes a metering pump 80 connected between the catalytic exchange component 10 and the water electrolysis component 20.

[0085] A metering pump 80 is used to control the amount of water flowing into the water electrolysis device, thereby controlling the electrolysis efficiency.

[0086] In some embodiments, please refer to Figure 1 The ultra-low deuterium water preparation device also includes a metering pump 80 and / or a liquid flow meter connected between the catalytic exchange component 10 and the water electrolysis component 20.

[0087] The metering pump 80, like the flow meter, performs the function of process monitoring and control, and its process parameter values ​​serve as technical control values ​​to ensure stable system operation.

[0088] The integrated ultra-low deuterium water preparation device provided in this application embodiment can be integrated with the corresponding control system, cooling water, electrical system and hydrogen safety monitoring system into one frame. This layout is compact, convenient to move and arrange the system according to the actual placement location. The integrated ultra-low deuterium water preparation device can make ultra-low deuterium water available immediately.

[0089] In some embodiments, the catalytic exchange assembly 10 includes a catalytic exchange column with a diameter of 10-200 mm. For example, the diameter can be 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, or 200 mm, etc.

[0090] In some embodiments, the height of the catalytic exchange column is 800-2000 mm. For example, it can be 800 mm, 820 mm, 830 mm, 840 mm, 900 mm, 960 mm, 1000 mm, 1200 mm, 1290 mm, 1300 mm, 1410 mm, 1520 mm, 1630 mm, 1740 mm, 1850 mm, 1960 mm, or 2000 mm, etc.

[0091] By modifying the size range of the catalytic exchange column, ultra-low deuterium water can be prepared. While meeting certain production efficiency requirements, the structure is compact, making it easy to move and arrange the system according to the actual placement location. The integrated ultra-low deuterium water preparation device can make ultra-low deuterium water available for immediate use.

[0092] In some embodiments, the deuterium concentration of the ultra-low deuterium water is 0 ppm to 10 ppm. For example, it is 0 ppm, 1 ppm, 2 ppm, 3 ppm, 4 ppm, 5 ppm, 6 ppm, 7 ppm, 8 ppm, 9 ppm, or 10 ppm.

[0093] In other words, the ultra-low deuterium water preparation device in this embodiment employs cascade technology, using at least two electrolytic catalytic exchange units in series to improve the quality of low-deuterium or ultra-low-deuterium water. The first electrolytic catalytic exchange unit 120 uses natural water or deionized water as raw material to produce low-deuterium water; the second electrolytic catalytic exchange unit 130 uses the low-deuterium water produced by the first electrolytic catalytic exchange unit 120 as raw material to produce ultra-low-deuterium water with an even lower deuterium concentration, improving the overall system's economic efficiency. Furthermore, the ultra-low-deuterium water prepared by this system has a deuterium concentration of 0 ppm to 10 ppm. This concentration range meets the medical field's requirements for ultra-low-deuterium water. In addition, this preparation device is relatively simple, has a high degree of process integration, can meet the preparation needs of different scales, and is also suitable for industrial-scale production.

[0094] The integrated ultra-low deuterium water preparation device provided in this application will be further described below with reference to two specific embodiments.

[0095] First embodiment:

[0096] The integrated ultra-low deuterium water preparation device features functional components arranged in functional zones using a box-type structure. The natural water contains 150 ppm deuterium, which is first reduced to 60 ppm through a two-step deuteration process, and then further reduced to 5 ppm. Water electrolysis is performed using an alkaline electrolyzer, producing 3 Nm³ of hydrogen. 3The catalytic exchange component 10 is a stainless steel column filled with particulate hydrophobic catalyst and hydrophilic filler, with a diameter of 60-90 mm and a height of 1000 mm. The maximum feed flow rate of deionized water is 3 L / h. The hydrogen fuel cell after catalytic exchange is a 5 kW proton exchange membrane fuel cell, using a hydrogen-air mode, synthesizing 2 L / h of low-deuterium water. 1 L / h is taken out as the low-deuterium water product, and the remaining 1 L / h of water enters the second dedeuteration process. The selected proton exchange membrane fuel cell is 1.5 kW. Due to the small amount of hydrogen, a hydrogen-oxygen mode fuel cell is used. The catalytic exchange component 10 is a stainless steel column filled with particulate hydrophobic catalyst and hydrophilic filler, with a diameter of 15-30 mm and a height of 800 mm. Finally, 0.3 L / h of ultra-low deuterium water is obtained. The components of this process technology can be integrated into a larger frame, and ultra-low deuterium water can be directly obtained.

[0097] Second embodiment:

[0098] The integrated ultra-low deuterium water preparation device features functional components arranged in separate functional zones using a box-type structure. The natural water contains 150 ppm deuterium, which is first reduced to 60 ppm through a two-step deuteration process. The system is integrated into two frames: the first deuteration system (first electrolytic catalytic exchange unit 120) is integrated in one frame, further reducing deuterium to 5 ppm; the second deuteration system (second electrolytic catalytic exchange unit 130) is integrated in the other frame. Water electrolysis is performed using an alkaline water electrolyzer, producing 5 Nm³ of hydrogen. 3 The catalytic exchange component 10 is a stainless steel column filled with particulate hydrophobic catalyst and hydrophilic filler, with a diameter of 90 mm and a height of 1200-2000 mm. The maximum feed flow rate of deionized water is 4 L / h. The hydrogen fuel cell after catalytic exchange is a 7 kW proton exchange membrane fuel cell, using a hydrogen-air mode. The amount of low-deuterium water synthesized is 4 L / h. 2 L / h is taken out as low-deuterium water as the product, and the remaining 2 L / h of water enters the second dedeuteration process. The proton exchange membrane fuel cell selected is 3 kW. Due to the small amount of hydrogen, a hydrogen-oxygen mode fuel cell is used. The catalytic exchange component 10 is a stainless steel column filled with particulate hydrophobic catalyst and hydrophilic filler, with a diameter of 30 mm and a height of 800-1000 mm. Finally, 1.5 L / h of ultra-low deuterium water is obtained.

[0099] As can be seen from the two specific embodiments above, the ultra-low deuterium water preparation device in this application adopts cascade technology, that is, at least two sets of electrolytic catalytic exchange units are used in series to improve the quality of low-deuterium water or ultra-low deuterium water. The first electrolytic catalytic exchange unit de-deuterates deionized water to obtain low-deuterium water, and the second electrolytic catalytic exchange unit further de-deuterates the low-deuterium water produced by the first electrolytic catalytic exchange unit 120 to obtain ultra-low deuterium water, thereby improving the economy of the entire system. Furthermore, the electrolytic catalytic exchange unit is equipped with a hydrogen fuel cell assembly 30. Hydrogen fuel cells are typically proton exchange membrane fuel cells. Proton exchange membrane fuel cells use the electrochemical reaction of hydrogen and oxygen (or air) to obtain low-deuterium water or ultra-low deuterium water. In hydrogen fuel cells, hydrogen and oxygen are on both sides of the fuel cell membrane. Hydrogen ionizes and permeates through the fuel cell membrane, with most of the low-deuterium water or ultra-low deuterium water generated on the oxygen side. Hydrogen fuel cells have a low temperature, high safety performance, and do not require additional cooling devices, thus improving the compactness of the structure. Furthermore, the catalytic exchange component 10, water electrolysis component 20, and hydrogen fuel cell component 30 are highly integrated into one unit, forming an integrated ultra-low deuterium water preparation device. This device can be directly connected to municipal water, and the municipal water becomes ultra-low deuterium water after passing through the integrated ultra-low deuterium water preparation device. The preparation device is small in size and highly safe, and can be placed in office buildings, conference rooms, and medical facilities such as sanatoriums and rehabilitation centers, or for home use, thus reducing the production, transportation, and storage costs of low-deuterium water.

[0100] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0101] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. An integrated ultra-low deuterium water preparation device, characterized in that, It includes at least two electrolytic catalytic exchange units, wherein the at least two electrolytic catalytic exchange units include a first electrolytic catalytic exchange unit and a second electrolytic catalytic exchange unit connected in series. An external water source is connected to the first electrolytic catalytic exchange unit and enters the first electrolytic catalytic exchange unit to generate low-deuterium water. The low-deuterium water enters the second electrolytic catalytic exchange unit and generates ultra-low-deuterium water. The electrolytic catalytic exchange unit includes: The catalytic exchange component can be connected to an external water source. Hydrogen and water entering the catalytic exchange component can undergo a water-hydrogen hydrogen isotope exchange reaction within the catalytic exchange component to generate low-deuterium hydrogen or ultra-low-deuterium hydrogen. A water electrolysis unit is connected to the catalytic exchange unit. Water in the catalytic exchange unit flows into the water electrolysis unit and is electrolyzed in the water electrolysis unit to generate hydrogen and oxygen. The hydrogen can enter the catalytic exchange unit. The hydrogen fuel cell assembly contains low-deuterium hydrogen or ultra-low-deuterium hydrogen generated within the catalytic exchange assembly, which is then used to recombine and generate low-deuterium water or ultra-low-deuterium water under electrochemical conditions. The integrated ultra-low deuterium water preparation device combines a corresponding control system, cooling water, electrical system, and hydrogen safety monitoring system into a single framework, and the deuterium concentration of the ultra-low deuterium water is 0ppm-10ppm.

2. The ultra-low deuterium water preparation device according to claim 1, characterized in that, The electrolytic catalytic exchange unit further includes a water cooling collection and treatment component for collecting and storing the low-deuterium water or ultra-low-deuterium water generated within the hydrogen fuel cell assembly.

3. The ultra-low deuterium water preparation device according to claim 2, characterized in that, The electrolytic catalytic exchange unit also includes a water storage device connected to the cooling collection and processing assembly, wherein the low-deuterium water or ultra-low-deuterium water in the cooling collection and processing assembly flows into the water storage device for storage and use.

4. The ultra-low deuterium water preparation device according to claim 3, characterized in that, The water storage device of the first electrolytic catalytic exchange unit is connected to the catalytic exchange component of the second electrolytic catalytic exchange unit.

5. The ultra-low deuterium water preparation device according to claim 1, characterized in that, The ultra-low deuterium water preparation device further includes a metering pump connected between the first electrolytic catalytic exchange unit and the second electrolytic catalytic exchange unit; and / or, the ultra-low deuterium water preparation device further includes a one-way valve connected between the first electrolytic catalytic exchange unit and the second electrolytic catalytic exchange unit.

6. The ultra-low deuterium water preparation device according to claim 1, characterized in that, The catalytic exchange assembly includes a catalytic exchange column, which is filled with a hydrophobic catalyst and a hydrophilic filler. The hydrophobic catalyst includes at least one of Pt-SDB and Pt-PTFE.

7. The ultra-low deuterium water preparation apparatus according to claim 6, characterized in that, The hydrophilic packing is at least one of triangular spiral packing, Dixon packing, Canon packing, and calendered ring packing.

8. The ultra-low deuterium water preparation device according to claim 1, characterized in that, The catalytic exchange assembly includes a catalytic exchange column with a diameter of 10-200 mm; and / or, the height of the catalytic exchange column is 800-2000 mm.

9. The ultra-low deuterium water preparation device according to claim 1, characterized in that, The ultra-low deuterium water preparation device further includes a heating component disposed between the catalytic exchange component and the water electrolysis component, wherein the hydrogen gas generated by electrolysis in the water electrolysis component is heated by the heating component and then flows into the catalytic exchange component.

Images