Energy-saving production process and device for deuterium-depleted water containing natural minerals

Abstract

The invention discloses an energy-saving natural mineral substance-containing deuterium-depleted water production process and device, and relates to the field of water processing, and the energy-saving natural mineral substance-containing deuterium-depleted water production process comprises the following steps: evaporating and condensing raw material water to obtain pure water, pressurizing water vapor generated in the evaporation process of the raw material water to form high-temperature and high-pressure steam, the high-temperature and high-pressure steam exchanges heat with the raw material water in the evaporation process, and the raw material water in the evaporation process is heated; preparing deuterium-depleted water from pure water; and mixing the deuterium-depleted water with concentrated water obtained by evaporating the raw material water to obtain the natural mineral substance-containing deuterium-depleted water. The heat in the low-grade heat source is recovered and converted into the high-grade heat energy, and the high-grade heat energy is used for heating the raw material water in the evaporation treatment process, so that the energy consumption of the evaporation and concentration process can be obviously reduced, and the evaporation-condensation process flow is optimized and the operation cost of the device is reduced.

Description

Technical Field

[0001] This invention relates to the field of water processing, and more specifically, to an energy-saving process and apparatus for producing low-deuterium water containing natural minerals. Background Technology

[0002] Deuterium is a stable isotope of hydrogen, also known as heavy hydrogen. It differs from hydrogen atoms in that it contains a neutron, resulting in different physicochemical properties compared to hydrogen. The natural deuterium abundance in water is approximately 150 ppm, and its abundance is often related to factors such as the location of the water source and altitude. Water with a deuterium abundance lower than that of natural water is called low-deuterium water, deuterium-poor water, or ultralight water. Studies have shown that low-deuterium water helps improve cell metabolism and vitality, promotes various enzyme reactions in the human body, enhances the activity of natural killer cells, strengthens the body's immune function, and helps inhibit cell carcinogenesis and cancer cell proliferation, thus achieving potential cancer prevention and health benefits. On the other hand, natural mineral water, as a common beverage, can replenish the body with natural minerals and trace elements. Scientific research shows that various minerals and trace elements in natural mineral water, such as strontium, vanadium, sodium, potassium, magnesium, and calcium, help maintain bone health, promote metabolism, and balance electrolytes, among other functions.

[0003] Therefore, the composite product of deuterium-containing water and natural mineral water, containing natural mineral deuterium-containing water, is a healthy beverage with numerous benefits and functions. The production process of natural mineral deuterium-containing water involves the concentration of raw water and the formulation of the natural mineral deuterium-containing water. Currently, almost all commercially available natural mineral deuterium-containing water is produced by directly bottling natural mineral water with relatively low deuterium content (e.g., 140 ppm) on production lines without concentration treatment or quality control of the raw water. The main reason for this is that efficient and low-cost mineral concentration technology and the ability to control the quality of natural mineral deuterium-containing water products limit the construction of large-scale production lines.

[0004] As a typical mineral concentration process, evaporation and vaporization can effectively concentrate minerals in raw water. Compared with concentration processes such as ion exchange and reverse osmosis, evaporation and vaporization has the advantages of large processing capacity and simple equipment structure. However, existing evaporation and vaporization equipment suffers from high energy consumption, with a large amount of energy used for solvent evaporation and condensation, resulting in high operating costs and limiting investment in related technologies and equipment. On the other hand, the lack of quality control technology for low-deuterium water products containing natural minerals also limits the mass production of high-quality, high-stability, low-deuterium-content water. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving process and apparatus for producing low-deuterium water containing natural minerals. By recovering heat from a low-grade heat source and converting it into high-grade heat energy, and then using the high-grade heat energy to heat the raw water in the evaporation process, the energy consumption of the evaporation and concentration process can be significantly reduced, thereby optimizing the evaporation-condensation process and reducing the operating cost of the apparatus.

[0006] To achieve the objective of this invention, the technical solution adopted is: an energy-saving production process for low-deuterium water containing natural minerals, comprising the following steps: The raw water is evaporated and condensed to obtain pure water. The water vapor generated during the evaporation process is pressurized to form high-temperature and high-pressure steam. The high-temperature and high-pressure steam is then exchanged with the raw water during the evaporation process to heat the raw water. Low-deuterium water is prepared by using pure water; Low-deuterium water is obtained by mixing low-deuterium water with concentrated water after evaporation of raw water.

[0007] Furthermore, during the mixing process of deuterium-containing water and concentrated water after the raw water has evaporated, the deuterium concentration and mineral concentration of the deuterium-containing water containing natural minerals are monitored in real time, and the ratio of concentrated water to deuterium-containing water is adjusted according to the monitoring results.

[0008] Furthermore, the evaporation of the raw water is carried out in a vacuum environment.

[0009] The device based on the above-mentioned energy-saving production process of deuterium-containing water with natural minerals includes a raw material water tank, an evaporation unit, and a heat exchanger. Multiple evaporation units are connected in parallel between the heat exchanger and the raw material water tank, and the steam outlets of the multiple evaporation units are connected to the condenser inlet of the heat exchanger. The condenser outlet of the heat exchanger is also connected to a pure water tank, and the outlet of the pure water tank is sequentially connected to the deuterium-containing water production unit, the deuterium-containing water tank, and the product water tank. The outlets of the evaporation units are all connected to the heat exchange inlets of the heat exchanger, and the heat exchange outlets of the heat exchanger are respectively connected to the multiple evaporation units. The outlets of the evaporation units are all connected to the product water tank.

[0010] Furthermore, each of the evaporation units is equipped with a reboiler.

[0011] Furthermore, a booster is installed at the steam outlet of multiple evaporation units, and the outlet of the booster is connected to the condenser inlet of the heat exchanger.

[0012] Furthermore, multiple evaporation units are connected to a common vacuum line, and a vacuum pump is installed on the vacuum line.

[0013] Furthermore, water pumps are installed at the outlets of the raw material water tank, the evaporation unit, the pure water tank, the deuterium water tank, and the product water tank.

[0014] Furthermore, flow meters are installed on the pipelines connecting the heat exchange inlet of the heat exchanger to each evaporation unit, the pipelines connecting the outlet of the evaporation unit to the product water tank, and the outlet of the deuterium water tank.

[0015] Furthermore, it also includes a DCS control system and a quality control unit installed on the product water tank. The outputs of multiple flow meters are connected to the input of the quality control unit, and the output of the quality control unit is connected to the input of the DCS control system and the input of multiple water pumps.

[0016] The beneficial effects of this invention are: In this invention, the temperature and pressure of the water vapor generated by evaporation are further increased by pressurizing the water vapor to form high-temperature and high-pressure steam, thereby realizing the recovery of heat from the low-grade heat source and converting it into high-grade heat energy. By heating the raw water in the evaporation process with high-temperature and high-pressure steam, the energy consumption of the evaporation and concentration process can be significantly reduced, thereby optimizing the evaporation-condensation process and reducing the operating cost of the equipment.

[0017] In addition, this invention effectively ensures that the product quality meets the set requirements by real-time monitoring of the deuterium and mineral concentrations of low-deuterium water containing natural minerals and adjusting the ratio of concentrated water to low-deuterium water based on the monitoring results. Attached Figure Description

[0018] The accompanying drawings illustrate exemplary embodiments of the invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

[0019] Figure 1 This is a system diagram of the energy-saving, low-deuterium water production device containing natural minerals provided by the present invention.

[0020] The attached diagram shows the markings and corresponding component names: 1. Raw material water tank; 2. Evaporation unit; 3. Reboiler; 4. Heat exchanger; 5. Booster; 6. Quality control unit; 7. Pure water tank; 8. Low-deuterium water production unit; 9. Low-deuterium water tank; 10. Product water tank; 11. Water pump; 12. Vacuum line; 13. Vacuum pump; 15. Flow meter. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Currently, most deuterium-containing water with natural minerals is produced using traditional evaporation and concentration processes. This involves evaporating the raw materials through a heating unit and condensing and recovering the gaseous solvent through a condensation unit. However, the evaporation equipment used in these traditional processes consumes the majority of its energy in the evaporation and condensation processes, resulting in high operating costs and limiting further technological development. Furthermore, the lack of quality control technology for deuterium-containing water with natural minerals makes it difficult to meet requirements for product stability and deuterium concentration. Specifically, commercially available deuterium-containing water with natural minerals is almost always produced by directly bottling natural mineral water with relatively low deuterium content (e.g., 140 ppm). Its mineral and deuterium concentrations are only related to the quality of the water source, making quality control impossible.

[0024] To address these shortcomings, this invention optimizes the energy consumption of a low-deuterium water production unit based on an evaporation and concentration process through energy-saving technology. Specifically, the booster 5 absorbs and compresses the water vapor at the outlet of the evaporation unit 2. With minimal compression work, the temperature and pressure of the high-temperature water vapor are further increased, allowing for the recovery and conversion of heat from the low-grade heat source into high-grade heat energy. The resulting high-temperature, high-pressure water vapor exchanges heat with the raw water undergoing evaporation in the evaporation unit 2 via the heat exchanger 4. The heated raw water returns to the evaporation unit 2 for further evaporation, while the cooled and condensed high-temperature, high-pressure water vapor enters the pure water tank 7. Throughout this process, heat recovery and reuse significantly reduce the energy consumption of the evaporation and concentration process, thereby optimizing the evaporation-condensation process and reducing the operating costs of the unit.

[0025] Traditional evaporation and concentration processes for deuterium-containing water with natural minerals typically lack product quality monitoring and control capabilities, resulting in low product quality stability and uncontrollable deuterium concentration. To address this issue, this invention proposes a quality control unit 6 to monitor the mineral and deuterium concentrations of the deuterium-containing water in real time. When the monitoring results do not meet the set parameters, the ratio of concentrated water to deuterium-containing water is actively adjusted based on calculations, thereby ensuring that the product quality meets the set requirements.

[0026] This invention provides an energy-saving process for producing deuterium-rich water containing natural minerals, comprising the following steps: The raw water is evaporated and condensed to obtain pure water. The water vapor generated during the evaporation process is pressurized to form high-temperature and high-pressure steam. The obtained high-temperature and high-pressure steam is then exchanged with the raw water during the evaporation process. On the one hand, the heat of the high-temperature and high-pressure steam is used to heat the raw water during the evaporation process, which greatly reduces the energy consumption required for the evaporation of the raw water. On the other hand, the high-temperature and high-pressure steam forms pure water after exchanging heat with the raw water during the evaporation process. The obtained pure water is prepared into deuterium-free water, and the prepared deuterium-free water is mixed with the concentrated water obtained after evaporating the raw water in a certain proportion to obtain deuterium-free water containing natural minerals.

[0027] In the production process of deuterium-containing water with natural minerals, during the mixing of deuterium-containing water with concentrated water after the raw water has evaporated, the deuterium concentration and mineral concentration of the deuterium-containing water with natural minerals are monitored in real time, and the ratio of concentrated water to deuterium-containing water is adjusted according to the monitoring results, so as to ensure that the product quality meets the set requirements.

[0028] In the production process of deuterium-rich water containing natural minerals, the evaporation of the raw water takes place under vacuum, which effectively lowers the boiling point of the raw water and thus improves evaporation efficiency. Furthermore, the vacuum level and evaporation temperature of the raw water can be adjusted according to actual needs.

[0029] In this invention, based on the above-mentioned energy-saving production process for deuterium-containing water with natural minerals, an energy-saving production apparatus for deuterium-containing water with natural minerals is also provided, such as... Figure 1 As shown, the system includes a raw water tank 1, an evaporation unit 2, and a heat exchanger 4. The raw water tank 1 stores the raw water, the evaporation unit 2 heats and evaporates the raw water, and the heat exchanger 4 exchanges heat between the steam generated by the evaporation unit 2 and the unheated raw water within the evaporation unit 2. In this invention, there are multiple evaporation units 2. The inlets of these multiple evaporation units 2 are all connected to the outlets of the raw water tank 1 via pipelines. This allows the raw water in the raw water tank 1 to be transported to the corresponding evaporation unit 2 according to its operating status, and the initial water volume in the evaporation unit 2 is determined based on the liquid level within the evaporation unit 2. Simultaneously, the steam outlets of the multiple evaporation units 2 are connected to the condensation inlet of the heat exchanger 4 via pipelines, allowing the steam generated by the multiple evaporation units 2 to be sent into the heat exchanger 4 for condensation, thus obtaining pure water from the condensed steam.

[0030] In this invention, in order to further store the pure water obtained from condensation, the condensation outlet of heat exchanger 4 is also connected to a pure water tank 7 via a pipeline. The outlet of pure water tank 7 is sequentially connected to a low-deuterium water production unit 8, a low-deuterium water tank 9, and a product water tank 10 via pipelines. The low-deuterium water production unit 8 is realized by a water distillation unit (WD), a combined electrolytic catalytic exchange process unit (CECE), etc. The deuterium concentration in the low-deuterium water prepared by the low-deuterium water production unit 8 is at least 30 ppm. The low-deuterium water tank 9 is used to store the low-deuterium water produced by the low-deuterium water production unit 8. The product water tank 10 is used to mix and store the low-deuterium water sent from the low-deuterium water tank 9 and the concentrated water sent from the evaporation unit 2. In this invention, both the pure water tank 7 and the raw water tank 1 are equipped with inlet pipes, which facilitates the delivery of raw water into the raw water tank 1 through the inlet pipes, and also facilitates the delivery of pure water prepared by external water purification equipment into the pure water tank 7 through the inlet pipes when the pure water in the pure water tank 7 is insufficient.

[0031] Furthermore, the outlet of evaporation unit 2 is connected to the heat exchange inlet of heat exchanger 4 via a pipeline, and the heat exchange outlet of heat exchanger 4 is connected to multiple evaporation units 2 respectively. This allows the raw water to be evaporated in evaporation unit 2 to be sent into heat exchanger 4 to exchange heat with the steam generated by evaporation in evaporation unit 2. After the heat exchange is completed, the raw water can flow back into evaporation unit 2, thereby achieving heating of the raw water. In the setup, the heat exchange outlet of heat exchanger 4 is preferentially connected to the upper part of evaporation unit 2 via a pipeline, so that the raw water in evaporation unit 2 can be fully mixed with the raw water to be heated during the heat exchange process.

[0032] In order to send the concentrated water in the evaporation unit 2 into the product water tank 10, the outlet of the evaporation unit 2 is connected to the product water tank 10 through a pipeline, so that the concentrated water obtained after evaporation and concentration in the evaporation unit 2 can be sent into the product water tank 10 for the preparation of deuterium-low water containing natural minerals.

[0033] To ensure that the raw water is heated and evaporated within the evaporation unit 2, each evaporation unit 2 is equipped with a reboiler 3. The heat source for the reboiler 3 can be steam, thermal oil, or electric heating, etc., and the raw water is heated and evaporated within the evaporation unit 2 through the reboiler 3. In this invention, the reboiler 3 can be controlled according to the evaporation status of the evaporation unit 2, thereby ensuring stable evaporation of the raw water within the evaporation unit 2.

[0034] To increase the temperature and pressure of the steam generated by the evaporation unit 2, the steam outlets of multiple evaporation units 2 are connected to a common booster 5 via pipelines. The outlet of the booster 5 is connected to the condenser inlet of the heat exchanger 4 via pipelines, so that the steam generated by the evaporation unit 2 is sent into the heat exchanger 4 for heat exchange after passing through the booster 5. In this invention, the compression ratio of the booster 5 can be set before startup as needed.

[0035] In this invention, the heat exchanger 4 is a falling film heat exchanger 4 or a siphon heat exchanger 4. The evaporation unit 2 is equipped with a liquid level sensor and a conductivity meter. The liquid level sensor monitors the liquid level in the evaporation unit 2, and the conductivity meter is used to monitor the conductivity of the concentrate or raw water in the evaporation unit 2, so as to facilitate the control of the operating status of the evaporation unit 2.

[0036] To further improve the evaporation efficiency within the evaporation unit 2, a vacuum line 12 is connected to multiple evaporation units 2. A vacuum pump 13 is installed on the vacuum line 12. When the vacuum pump 13 is running, it can perform vacuuming on the evaporation unit 2, which not only maintains the set pressure state of the evaporation unit 2, but also effectively reduces the boiling point of the raw water within the evaporation unit 2.

[0037] In this invention, in order to ensure the transportation of raw water, concentrated water, pure water, deuterium-free water and product water, water pumps 11 are installed at the outlets of the raw water tank 1, the evaporation unit 2, the pure water tank 7, the deuterium-free water tank 9, and the product water tank 10.

[0038] Furthermore, flow meters 15 are installed on the pipelines connecting the heat exchange inlet of the heat exchanger 4 to each evaporation unit 2, the pipelines connecting the outlet of the evaporation unit 2 to the product water tank 10, and the outlet of the low-deuterium water tank 9. The flow meter 15 installed between the heat exchange inlet of the heat exchanger 4 and the evaporation unit 2 is used to monitor the flow rate of the raw material water heated by the heat exchanger 4 entering the evaporation unit 2. The flow meter 15 installed between the outlet of the evaporation unit 2 and the product water tank 10 is used to monitor the flow rate of the concentrated water sent into the product water tank 10. The flow meter 15 installed at the outlet of the low-deuterium water tank 9 is used to monitor the flow rate of the low-deuterium water sent into the product water tank 10.

[0039] The energy-saving production unit for low-deuterium water containing natural minerals also includes a quality control unit 6, which is installed on the product water tank 10. The quality control unit 6 is used to monitor the deuterium and mineral concentrations in the product water in the product water tank 10 online, and analyze the monitored deuterium and mineral concentrations. Operators can also preset the deuterium and mineral concentrations in the product water in the product water tank 10 through the quality control unit 6. Simultaneously, the outputs of multiple flow meters 15 are connected to the inputs of the quality control unit 6, and the outputs of the quality control unit 6 are connected to the inputs of multiple water pumps 11, allowing the results monitored by the flow meters 15 to be directly transmitted to the quality control unit 6. The quality control unit 6 monitors the deuterium and mineral concentrations in the product water in the product water tank 10 in real time, compares the monitored deuterium and mineral concentrations with the preset deuterium and mineral concentrations, and sends control commands to the corresponding water pumps 11 based on the comparison results, thereby controlling the flow rate of raw water, concentrated water, or low-deuterium water to achieve product quality control.

[0040] In this invention, the energy-saving deuterium-containing water production device also includes a DCS control system. The output end of the quality control unit 6 is connected to the input end of the DCS control system, so that the flow rate value monitored by each flow meter 15, the deuterium concentration and mineral concentration of the product water in the product water tank 10 monitored by the quality control unit 6, and the operating frequency of each water pump 11 can all be transmitted to the DCS control system for display and storage.

[0041] Furthermore, to facilitate monitoring of the liquid levels in evaporation unit 2, pure water tank 7, deuterium-rich water tank 9, product water tank 10, and raw material water tank 1, liquid level sensors can be installed on each of these units. The output of each liquid level sensor is connected to the input of the mass control unit 6, allowing the liquid level data monitored by the sensors to be directly transmitted to the mass control unit 6. To facilitate temperature monitoring of multiple evaporation units 2, temperature sensors can be installed on each unit, and the output of each temperature sensor is connected to the input of the mass control unit 6, allowing the temperature data monitored by the sensors to be directly transmitted to the mass control unit 6. Simultaneously, the output of the mass control unit 6 is connected to the reboiler 3 on each evaporation unit 2. After comparing the temperature monitored by the temperature sensor with the preset temperature of the mass control unit 6, the mass control unit 6 can control the operation of the reboiler 3 on the corresponding evaporation unit 2 based on the comparison result. To facilitate pressure monitoring within the evaporation unit 2, pressure sensors can be installed on each evaporation unit 2, and the output of each pressure sensor can be connected to the input of the mass control unit 6, allowing the pressure detected by the pressure sensor to be directly transmitted to the mass control unit 6. Simultaneously, the input of the vacuum pump 13 can be connected to the output of the mass control unit 6, so that after the pressure sensor transmits the monitored pressure to the mass control unit 6, the mass control unit 6 compares the received pressure value with a preset pressure value and sends a control command to the vacuum pump 13 based on the comparison result. Upon receiving the control command, the vacuum pump 13 operates accordingly.

[0042] Meanwhile, the quality control unit 6 can generate real-time trend graphs and real-time data tables based on the monitored liquid level, temperature, pressure, flow rate, and conductivity values. This enables the energy-saving deuterium-containing water production device with natural minerals to perform data acquisition, processing, analysis, and historical data query and export functions. Additionally, the DCS control system has an alarm module. After comparing the preset liquid level, temperature, pressure, flow rate, and conductivity values ​​with the received values, the quality control unit 6 sends an alarm command to the DCS control system when the received value exceeds the preset value. Upon receiving the alarm command, the DCS control system sends an alarm command to the alarm module, which then activates the alarm.

[0043] The energy-saving deuterium-low water production unit containing natural minerals operates as follows: Raw water supply: Raw water is sent into raw water tank 1, and water pump 11 is run through the outlet of raw water tank 1 to pump the raw water in raw water tank 1 to the operating evaporation unit 2; Evaporation and Concentration Process: Vacuum pump 13 starts running and evacuates the evaporation unit 2 containing raw water to maintain the pressure value preset by the mass control unit 6. Then, the reboiler 3 on one of the evaporation units 2 heats and evaporates the raw water in the evaporation unit 2, and the booster 5 is started so that the steam generated during the evaporation process of the evaporation unit 2 is compressed by the booster 5 to obtain high-temperature and high-pressure steam. The high-temperature and high-pressure steam enters the heat exchanger 4. At the same time, the water pump 11 at the outlet of the evaporation unit 2 is started. The water pump 11 pumps the raw water being evaporated and concentrated in the evaporation unit 2 into the heat exchanger 4, so that the raw water sent out by the evaporation unit 2 exchanges heat with the high-temperature and high-pressure steam entering the heat exchanger 4, so that the high-temperature and high-pressure steam condenses into pure water and is sent into the pure water tank 7, while the heated raw water flows back into the evaporation unit 2. Low-deuterium water preparation: The pure water entering the pure water tank 7 is pumped to the low-deuterium water production unit 8 through the water pump 11 at the outlet of the pure water tank 7. The low-deuterium water production unit 8 prepares the pure water into low-deuterium water that meets the deuterium concentration requirements, and the prepared low-deuterium water is sent into the low-deuterium water tank 9 for storage. Preparation of deuterium-containing water with natural minerals: The water pump 11 at the outlet of the deuterium-containing water tank 9 delivers the deuterium-containing water in the deuterium-containing water tank 9 to the product water tank 10; at the same time, the water pump 11 at the outlet of the evaporation unit 2 delivers the concentrated water in the evaporation unit 2 that has completed the concentration treatment to the product water tank 10, so that the deuterium-containing water and the concentrated water are mixed to obtain deuterium-containing water with natural minerals.

[0044] During the operation of the energy-saving deuterium-containing water production unit containing natural minerals, temperature and pressure sensors monitor the temperature and pressure in the evaporation unit 2, which is undergoing or awaiting evaporation and concentration, in real time. The temperature and pressure sensors transmit the monitored temperature and pressure to the quality control unit 6. After receiving the real-time parameters, the quality control unit 6 compares them with the preset parameters. Based on the comparison results, the quality control unit 6 adjusts the operation of the reboiler 3 to ensure that the evaporation and concentration process of the evaporation unit 2 is guaranteed, while avoiding excessive waste of heat energy.

[0045] During the operation of the energy-saving deuterium-containing water production unit containing natural minerals, a pressure sensor monitors the pressure in the evaporation unit 2, which is undergoing or awaiting evaporation and concentration, in real time. The pressure sensor transmits the monitored pressure to the quality control unit 6. After receiving the pressure transmitted by the pressure sensor, the quality control unit 6 compares it with the preset pressure. When the pressure in the evaporation unit 2 is lower than the preset pressure of the quality control unit 6, the quality control unit 6 sends an alarm signal to the alarm module and sends a frequency conversion command to the vacuum pump 13. After receiving the frequency conversion command, the vacuum pump 13 runs at high speed. When the pressure in the evaporation unit 2 is higher than the pressure of the quality control unit 6, the quality control unit 6 sends a frequency conversion command to the vacuum pump 13. After receiving the frequency conversion command, the vacuum pump 13 runs at low speed to perform vacuuming on the evaporation unit 2.

[0046] During the operation of the energy-saving deuterium-containing water production unit containing natural minerals, the quality control unit 6 monitors the deuterium and mineral concentrations of the product water in the product water tank 10 in real time. The flow meter 15 at the outlet of the evaporation unit 2, which completes the evaporation and concentration, monitors the flow rate of the concentrated water in real time. The flow meter 15 at the outlet of the deuterium-containing water tank 9 monitors the flow rate of the deuterium-containing water in real time. The quality control unit 6 and the flow meter 15 transmit the monitoring results directly to the quality control unit 6. After receiving the monitoring results from the quality control unit 6 and the flow meter 15, the quality control unit 6 compares them with the preset deuterium concentration, mineral concentration, and flow rate values. Based on the comparison results, the quality control unit 6 adjusts the operating frequency of the water pumps 11 that transport the concentrated water and the deuterium-containing water to achieve product quality control.

[0047] The energy-saving low-deuterium water production device containing natural minerals provided by this invention, compared with the novel plant or mineral extraction equipment provided by application number CN202120210034.9, can effectively achieve energy saving by recovering heat and reusing the recovered heat to heat the raw water to be evaporated. Moreover, this energy saving only requires a small amount of compression work to absorb heat from a low-grade heat source and convert it into high-grade heat energy.

[0048] The energy-saving deuterium-containing water production device provided by this invention, compared with the deuterium-containing mineral water production system and process provided in application number CN202111678663.5, uses a quality control unit 6 to monitor the mineral concentration and deuterium concentration of the product water online, and adjusts the ratio of concentrated water and deuterium-containing water in real time according to the monitoring results, so as to effectively ensure the quality of the product.

[0049] 1. The actual effect of evaporation and concentration process The following experiment utilizes evaporation equipment to achieve low-temperature vacuum evaporation for mineral concentration in raw water, based on the evaporation and concentration process. The process principle is to achieve rapid evaporation of raw water through vacuum distillation, utilizing the free diffusion of water molecules due to thermal motion and the physical process of thermal evaporation to evaporate liquid water into a gaseous state, thereby achieving mineral concentration.

[0050] The raw water was concentrated approximately 4, 10, and 20 times, respectively. The content of minerals such as calcium, potassium, magnesium, sodium, silicon, strontium, and vanadium in the raw water and concentrated water samples before and after concentration was determined using inductively coupled plasma (ICP). To quantitatively analyze the actual concentration effect of the evaporation and concentration process, relative deviation and mean relative deviation were defined to describe the degree of deviation of the actual mineral concentration from the theoretical concentration, and the overall average level of the relative deviation for each mineral, respectively. The definitions are as follows: (1) (2) In formula (1) No. The actual concentration of each mineral, For the first The theoretical concentration of a mineral, For the first The deviation of the actual concentration of a mineral from its theoretical concentration; in equation (2) Indicates the number of mineral types. This represents the average of the relative deviations of all minerals.

[0051] To verify the actual effect of the evaporation concentration process, the relative deviations and mean relative deviations of various mineral concentrations were calculated. Table 1 shows the relative deviations and mean relative deviations of mineral content at different concentration ratios. It can be seen that the evaporation concentration process can effectively concentrate minerals in the raw water. The calculated mean relative deviations of various mineral concentrations in the concentrated water at approximately 4, 10, and 20 times concentrations are 15.1%, 25.9%, and 29.0%, respectively.

[0052] Table 1. Deviation in mineral concentration of water samples at different concentration ratios 2. Verification of the actual effectiveness of quality control technology Based on the evaporation and concentration process, mass production of deuterium-containing water with natural minerals was carried out. The deuterium concentration requirement was set at 50 ± 5 ppm, and the relative deviation of the concentrations of minerals such as strontium, vanadium, sodium, potassium, magnesium, and calcium in the deuterium-containing water product from the raw material water was <20%. As shown in Table 2, the measured deuterium concentration of the product water was 47.1 ppm, which meets the set requirements. The measured concentrations of strontium, vanadium, sodium, potassium, magnesium, and calcium in the raw material water and the product water, and the concentration deviations are shown in Table 3, respectively. The relative deviations meet the set requirements. That is, the feasibility and accuracy of the evaporation and concentration process are effectively demonstrated.

[0053] Table 2. Test results of deuterium concentration in raw water and deuterium-containing water products with natural minerals. Table 3. Mineral Concentration Deviation Table for Low-Deuterium Aquatic Products Containing Natural Minerals Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. An energy-saving production process for deuterium-rich water containing natural minerals, characterized in that, Includes the following steps: The raw water is evaporated and condensed to obtain pure water. The water vapor generated during the evaporation process is pressurized to form high-temperature and high-pressure steam. The high-temperature and high-pressure steam is then exchanged with the raw water during the evaporation process to heat the raw water. Low-deuterium water is prepared by using pure water; Low-deuterium water is obtained by mixing low-deuterium water with concentrated water after evaporation of raw water.

2. The energy-saving production process for low-deuterium water containing natural minerals according to claim 1, characterized in that, During the mixing process of deuterium-containing water and concentrated water after the raw water has evaporated, the deuterium concentration and mineral concentration of the deuterium-containing water containing natural minerals are monitored in real time, and the ratio of concentrated water to deuterium-containing water is adjusted according to the monitoring results.

3. The energy-saving production process for low-deuterium water containing natural minerals according to claim 1, characterized in that, The evaporation of the raw water is carried out in a vacuum environment.

4. An apparatus for producing low-deuterium water containing natural minerals based on the energy-saving process described in claim 1, 2, or 3, characterized in that, The system includes a raw material water tank (1), an evaporation unit (2), and a heat exchanger (4). There are multiple evaporation units (2), which are connected in parallel between the heat exchanger (4) and the raw material water tank (1). The steam outlets of the multiple evaporation units (2) are connected to the condensation inlet of the heat exchanger (4). The condensation outlet of the heat exchanger (4) is also connected to a pure water tank (7). The outlet of the pure water tank (7) is connected in sequence to a low-deuterium water production unit (8), a low-deuterium water tank (9), and a product water tank (10). The outlets of the evaporation units (2) are all connected to the heat exchange inlet of the heat exchanger (4), and the heat exchange outlets of the heat exchanger (4) are respectively connected to multiple evaporation units (2). The outlets of the evaporation units (2) are all connected to the product water tank (10).

5. The energy-saving deuterium-containing water production device according to claim 4, characterized in that, Each of the evaporation units (2) is equipped with a reboiler (3).

6. The energy-saving deuterium-containing water production device according to claim 4, characterized in that, The steam outlets of multiple evaporation units (2) are all equipped with a booster (5), and the outlet of the booster (5) is connected to the condenser inlet of the heat exchanger (4).

7. The energy-saving deuterium-containing water production device according to claim 4, characterized in that, Multiple evaporation units (2) are connected to a vacuum line (12), and a vacuum pump (13) is installed on the vacuum line (12).

8. The energy-saving deuterium-containing water production device according to claim 4, characterized in that, Water pumps (11) are installed at the outlets of the raw material water tank (1), the evaporation unit (2), the pure water tank (7), the deuterium water tank (9), and the product water tank (10).

9. The energy-saving deuterium-containing water production device according to claim 8, characterized in that, Flow meters (15) are installed on the pipeline connecting the heat exchange inlet of the heat exchanger (4) to each evaporation unit (2), the pipeline connecting the outlet of the evaporation unit (2) to the product water tank (10), and the outlet of the deuterium water tank (9).

10. The energy-saving deuterium-containing water production device according to claim 9, characterized in that, It also includes a DCS control system and a quality control unit (6) installed on the product water tank (10). The outputs of multiple flow meters (15) are connected to the input of the quality control unit (6). The output of the quality control unit (6) is connected to the input of the DCS control system and the input of multiple water pumps (11).

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