A precise carbon dioxide dosing device

Abstract

This invention relates to the field of water treatment technology and provides a precise carbon dioxide dosing device, including a carbon dioxide storage tank, a carbon dioxide vaporizer, and a high-efficiency mixing reactor. The carbon dioxide vaporizer is connected to the gas output end of the carbon dioxide storage tank and is used to vaporize the carbon dioxide supplied from the storage tank. The high-efficiency mixing reactor is connected to the carbon dioxide vaporizer and is used to perform bubble reaction and water-soluble reaction on the vaporized carbon dioxide. This provides efficient solutions for precise calculation of the target dosing value, precise control of the dosing amount, and rapid dissolution reaction of carbon dioxide, improving the accuracy of carbon dioxide dosing and increasing the reaction rate of carbon dioxide.

Description

Technical Field

[0001] This invention belongs to the field of water treatment technology, and in particular relates to a precise carbon dioxide dosing device. Background Technology

[0002] As people's demands for water quality continue to increase, water treatment technology also needs to be upgraded. Water plants are crucial for providing drinking water to residents. pH is one of the most commonly used and important water quality indicators. It characterizes the strength of acids and bases in water, reflecting the acid-base balance achieved by various dissolved compounds in the solution. pH adjustment technology for tap water is a core component of water plants and fundamental to ensuring the quality of drinking water. It plays a vital role in people's daily lives. With the expansion of people's demand for water and the increasing demands for water quality, water plants must continuously improve their water purification processes to ensure that water quality meets national standards.

[0003] In water treatment, carbon dioxide is commonly used to adjust the pH of raw water. By increasing the concentration of carbon dioxide, the pH of the raw water is lowered. Carbon dioxide forms carbonic acid in water, which can inhibit changes in the water's acidity or alkalinity. Furthermore, pH adjustment using carbon dioxide avoids the need for chemical reagents, making water treatment more environmentally friendly and sustainable. Therefore, using carbon dioxide to adjust the pH of raw water can effectively control the acidity or alkalinity of water, protect water quality, and is also more environmentally friendly and sustainable.

[0004] Currently, wastewater and tap water treatment on the market usually uses aeration heads or water jets for dosing. However, these dosing methods have problems such as low carbon dioxide utilization and low dosing accuracy. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a precise carbon dioxide dosing device, aiming to solve the problems of low carbon dioxide utilization and low dosing accuracy that are common in water treatment technologies that typically use aeration heads or water jets for dosing.

[0006] The technical solution provided by this invention is: a carbon dioxide precision dosing device, comprising a carbon dioxide storage tank, a carbon dioxide vaporizer, and a high-efficiency mixing reactor; The carbon dioxide vaporizer is connected to the gas output end of the carbon dioxide storage tank and is used to vaporize the carbon dioxide delivered from the carbon dioxide storage tank. The high-efficiency mixing reactor is connected to the carbon dioxide vaporizer and is used to perform bubble reaction and water-soluble reaction on the vaporized carbon dioxide. The internal cavity of the high-efficiency mixing reactor is provided with micro-nano aerators, free contact chambers, forced mixing chambers and high-pressure loading chambers from bottom to top. The micro-nano aerator is used to generate micro-nano bubbles when carbon dioxide flows through it, and the generated micro-nano bubbles enter the free contact cavity. Within the free contact cavity, carbon dioxide freely mixes and contacts with water under the action of micro- and nano-bubbles; Within the forced mixing chamber, carbon dioxide and water are forcibly mixed; Within the high-pressure loading chamber, carbon dioxide is subjected to high-pressure loading to enhance its solubility.

[0007] As an improved solution, the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor is equipped with a precision dosing control component for accurately controlling the amount of carbon dioxide added.

[0008] As an improved solution, the precision dosing control component includes a PLC, an automatic flow regulating valve, and a flow meter; The automatic flow regulating valve and the flow meter are both installed on the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor, and the automatic flow regulating valve and the flow meter are both connected to the PLC signal. The flow meter is used to monitor the instantaneous flow rate of carbon dioxide in the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor, and to send the monitored instantaneous flow rate data to the PLC. The PLC is used to acquire the instantaneous flow data sent by the flow meter, compare it with the preset target flow data, generate control opening data of the regulating valve, and send the generated control opening data to the automatic flow regulating valve. The automatic flow regulating valve is used to adjust the instantaneous flow rate of carbon dioxide on the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor according to the control opening data sent by the PLC.

[0009] As an improved solution, the precision dosing control component also includes a temperature sensor and a pressure sensor installed on the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor, both of which are connected to the PLC signal. The temperature sensor is used to monitor the temperature of carbon dioxide gas on the connecting pipeline and transmit the monitored temperature data to the PLC. The pressure sensor is used to monitor the carbon dioxide gas pressure on the connecting pipeline and transmit the monitored pressure data to the PLC. The PLC calculates the required carbon dioxide gas volume ratio based on the acquired temperature data, pressure data, and the ratio of gas volume to temperature and pressure, and then sends it to the automatic flow regulating valve.

[0010] As an improved solution, the PLC specifically includes: The instantaneous flow data acquisition module is used to acquire the instantaneous flow data sent by the flow meter; The regulating valve control opening data generation module is used to compare with the preset target flow data to generate the regulating valve control opening data; A control opening data sending module is used to send the generated control opening data to the automatic flow regulating valve; Temperature and pressure data acquisition module, used to acquire temperature and pressure data; The gas volume ratio calculation and generation module is used to calculate and generate the required carbon dioxide gas volume ratio data based on the obtained temperature data, pressure data, and the proportional relationship between gas volume and temperature and pressure. The gas volume ratio data transmission module is used to transmit the generated carbon dioxide gas volume ratio data to the automatic flow regulating valve.

[0011] As an improved solution, the carbon dioxide precision dosing device also includes a pH detection device for detecting the pH value of the raw water entering the high-efficiency mixing reactor.

[0012] As an improved solution, the pH detection device includes a housing, an inlet regulating valve connected to the inlet pipe of the housing, an outlet regulating valve connected to the outlet pipe of the housing, a pH meter slidably installed inside the housing, and a flow-slowing groove for water flow inside the housing.

[0013] As an improved solution, the carbon dioxide precision dosing device also includes a booster pump for pressurizing the raw water entering the high-efficiency mixing reactor.

[0014] In this embodiment of the invention, the carbon dioxide precision dosing device includes a carbon dioxide storage tank, a carbon dioxide vaporizer, and a high-efficiency mixing reactor. The carbon dioxide vaporizer is connected to the gas output end of the carbon dioxide storage tank and is used to vaporize the carbon dioxide delivered from the storage tank. The high-efficiency mixing reactor is connected to the carbon dioxide vaporizer and is used to perform bubble reaction and water-soluble reaction on the vaporized carbon dioxide. This provides efficient solutions for precise calculation of the target dosing value, precise control of the dosing amount, and rapid dissolution reaction of carbon dioxide, improving the accuracy of carbon dioxide dosing and increasing the reaction rate of carbon dioxide.

[0015] In this process, carbon dioxide gas enters the high-efficiency mixing reactor and generates micro-nano-level bubbles through a micro-nano bubble generator. These bubbles freely mix with water in the free contact chamber and are then forcibly mixed in the forced mixing zone before reaching the high-pressure loading chamber to complete the final high-pressure loading and achieve the optimal dissolution rate. This process achieves high contact area, high contact pressure, and long contact time, which together ensure the dissolution efficiency of carbon dioxide. The pH measuring device utilizes a flow-slowing tank design to ensure the pH probe is always immersed in flowing water, increasing the water surface area and reducing the risk of interference with the pH meter. The water flow rate through the pH meter is adjusted by regulating the opening of the inlet and outlet valves. The pH meter is mounted on a sliding rail, allowing for adjustable immersion depth and easy manual cleaning. This ensures accurate pH readings while also providing a degree of self-cleaning for the pH measuring system. A drain valve is located at the bottom, and the inclined design of the tank allows impurities to accumulate and be periodically drained, preventing any impact on the pH meter's measurement accuracy.

[0016] The booster pump pressurizes the raw water before it enters the reactor, creating a high-pressure environment for the carbon dioxide dissolution reaction (the carbon dioxide dissolution rate and dissolution rate increase with increasing pressure). Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the carbon dioxide precision dosing device provided by the present invention; Figure 2 This is a schematic diagram of the structure of the high-efficiency mixing reactor provided by the present invention; Figure 3 This is a schematic diagram of the PLC structure provided by the present invention; Figure 4 This is a schematic diagram of the pH detection device provided by the present invention; Among them, 1-carbon dioxide storage tank, 2-carbon dioxide vaporizer, 3-high-efficiency mixing reactor, 4-micro-nano aerator, 5-free contact chamber, 6-forced mixing chamber, 7-high-pressure loading chamber, 8-precision dosing control component, 9-automatic flow regulating valve, 10-flow meter, 11-instantaneous flow data acquisition module, 12-regulating valve control opening data generation module, 13-control opening data transmission module, 14-temperature and pressure data acquisition module, 15-gas volume ratio calculation and generation module, 16-gas volume ratio data transmission module, 17-pH detection device, 18-inlet water regulating valve, 19-outlet water regulating valve, 20-pH meter, 21-booster pump, 22-drain valve. Detailed Implementation

[0019] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0020] Figure 1 This is a schematic diagram of the carbon dioxide precision dosing device provided by the present invention. For ease of explanation, only the parts related to the embodiments of the present invention are shown in the figure.

[0021] The carbon dioxide precision dosing device includes a carbon dioxide storage tank 1, a carbon dioxide vaporizer 2, and a high-efficiency mixing reactor 3; Among them, the carbon dioxide vaporizer 2 is connected to the gas output end of the carbon dioxide storage tank 1 and is used to vaporize the carbon dioxide delivered from the carbon dioxide storage tank 1. The high-efficiency mixing reactor 3 is connected to the carbon dioxide vaporizer 2 and is used to perform bubble reaction and water-soluble reaction on the vaporized carbon dioxide. Among them, the high-efficiency mixing reactor 3 improves the overall dissolution reaction rate of carbon dioxide.

[0022] In this embodiment, combined with Figure 2 As shown, the internal cavity of the high-efficiency mixing reactor 3 is provided with micro-nano aerators 4, free contact chambers 5, forced mixing chambers 6 and high-pressure loading chambers 7 from bottom to top. Among them, the micro-nano aerator 4 is used to generate micro-nano bubbles when carbon dioxide flows through, and the generated micro-nano bubbles enter the free contact chamber. Inside the free contact cavity 5, carbon dioxide and water are freely mixed and contacted under the action of micro-nano bubbles; Within the forced mixing chamber 6, carbon dioxide and water undergo forced mixing and combination. Figure 2 As shown, the forced mixing zone 6 is equipped with several baffle mechanisms. The figure shows a row and column arrangement of baffles, but other structures can also be used to achieve this baffle function. Within the high-pressure loading chamber 7, carbon dioxide is subjected to high-pressure loading to enhance its solubility. In this process, carbon dioxide gas enters the high-efficiency mixing reactor 3 and generates micro-nano-level bubbles through the micro-nano bubble generator 4. These bubbles freely mix with water in the free contact chamber 5 and are then forcibly mixed in the forced mixing zone 6 before reaching the high-pressure loading chamber 7 to complete the final high-pressure loading and achieve the optimal dissolution rate. Together, they achieve high contact area, high contact pressure, and long contact time, which together ensure the dissolution efficiency of carbon dioxide. from Figure 2 It can be seen that the micro-nano aerator 4, the free contact chamber 5, the forced mixing chamber 6, and the high-pressure loading chamber 7 form a special baffle mixing structure, which increases the contact area between carbon dioxide and water. The micro-nano bubbles generated by the micro-nano aerator 4 also promote the dissolution rate of carbon dioxide.

[0023] In this embodiment of the invention, combined with Figure 1 As shown, a precision dosing control component 8 for precisely controlling the amount of carbon dioxide added is provided on the connecting pipeline between the carbon dioxide vaporizer 2 and the high-efficiency mixing reactor 3. The precision dosing control component 8 includes a PLC ( Figure 1 (not shown in the image) Automatic flow regulating valve 9 and flow meter 10; The automatic flow regulating valve 9 and the flow meter 10 are both installed on the connecting pipeline between the carbon dioxide vaporizer 2 and the high-efficiency mixing reactor 3, and both the automatic flow regulating valve 9 and the flow meter 10 are connected to the PLC signal. The flow meter 10 is used to monitor the instantaneous flow rate of carbon dioxide in the connecting pipeline between the carbon dioxide vaporizer 2 and the high-efficiency mixing reactor 3, and to send the monitored instantaneous flow rate data to the PLC. The PLC is used to acquire the instantaneous flow data sent by the flow meter 10, compare it with the preset target flow data, generate the control opening data of the regulating valve, and send the generated control opening data to the automatic flow regulating valve 9. Automatic flow regulating valve 9 is used to regulate the instantaneous flow rate of carbon dioxide on the connecting pipeline between carbon dioxide vaporizer 2 and high-efficiency mixing reactor 3 according to the control opening data sent by PLC.

[0024] In this embodiment, the automatic flow regulating valve 9 in the precision dosing control component 8 passes through the flow meter 10 to achieve precise control of the dosing amount. The PLC is automatically controlled by the built-in PID program to always keep the dosing amount consistent with the target dosing amount, thus realizing the intelligence of the equipment.

[0025] Combination Figure 1As shown, the precision dosing control component 8 also includes a temperature sensor and a pressure sensor (not shown in the figure) installed on the connecting pipeline between the carbon dioxide vaporizer 2 and the high-efficiency mixing reactor 3. Both the temperature sensor and the pressure sensor are connected to the PLC signal. Among them, the temperature sensor is used to monitor the temperature of carbon dioxide gas on the connecting pipeline and transmit the monitored temperature data to the PLC; A pressure sensor is used to monitor the pressure of carbon dioxide gas on the connecting pipeline and transmit the monitored pressure data to the PLC. The PLC calculates the required carbon dioxide gas volume ratio based on the acquired temperature and pressure data, as well as the ratio of gas volume to temperature and pressure, and then sends it to the automatic flow control valve.

[0026] Based on the above embodiments, such as Figure 3 As shown, the PLC specifically includes: The instantaneous flow data acquisition module 11 is used to acquire instantaneous flow data sent by the flow meter; The regulating valve control opening data generation module 12 is used to compare with the preset target flow data to generate the regulating valve control opening data; The control opening data sending module 13 is used to send the generated control opening data to the automatic flow regulating valve; Temperature and pressure data acquisition module 14 is used to acquire temperature and pressure data; The gas volume ratio calculation and generation module 15 is used to calculate and generate the required carbon dioxide gas volume ratio data based on the obtained temperature data, pressure data, and the proportional relationship between gas volume and temperature and pressure. The gas volume ratio data transmission module 16 is used to transmit the generated carbon dioxide gas volume ratio data to the automatic flow regulating valve.

[0027] The PLC is a conventional programmable logic controller, which also contains other modules, which will not be described in detail here.

[0028] Combination Figure 1 As shown, the carbon dioxide precision dosing device also includes a pH detection device 17 for detecting the pH value of the raw water entering the high-efficiency mixing reactor 3. Among them, combined Figure 4 As shown, the pH detection device 17 includes a housing, an inlet regulating valve 18 connected to the inlet pipe of the housing, an outlet regulating valve 19 connected to the outlet pipe of the housing, a pH meter 20 slidably installed inside the housing, and a flow-slowing groove for water flow inside the housing. The design of the slow-flow tank in the pH detection device 17 ensures that the probe of the pH meter 20 is always in flowing water, and increases the water surface area, reducing the risk of interference to the pH meter 20. The flow rate through the pH meter 20 is adjusted by regulating the opening of the inlet regulating valve 18 and the outlet regulating valve 19. The pH meter 20 is mounted on a sliding rail, allowing for adjustable immersion depth and easy manual cleaning. This ensures accurate pH measurement while also providing a degree of self-cleaning for the pH detection device 17. A drain valve 22 is located at the bottom of the pH detection device 17, and the inclined design of the tank allows impurities to accumulate and be discharged periodically, preventing any impact on the measurement accuracy of the pH meter 20.

[0029] In this embodiment of the invention, the carbon dioxide precision dosing device also includes a booster pump 21 for pressurizing the raw water entering the high-efficiency mixing reactor 3; The booster pump 21 pressurizes the raw water before it enters the reactor, creating a high-pressure environment for the carbon dioxide dissolution reaction (the carbon dioxide dissolution rate and dissolution rate increase with increasing pressure).

[0030] The carbon dioxide precision dosing device provided by this invention is mainly used for the dosing of carbon dioxide in water plants, stabilizing the pH value of the influent. It uses precise flow control components and a special high-efficiency mixing reactor 3 to ensure the accuracy of carbon dioxide dosing and the reaction rate, replacing ordinary acidic agents and solving the problems of agent pollution and high cost.

[0031] In this embodiment of the invention, the carbon dioxide precision dosing device includes a carbon dioxide storage tank 1, a carbon dioxide vaporizer 2, and a high-efficiency mixing reactor 3. The carbon dioxide vaporizer 2 is connected to the gas output end of the carbon dioxide storage tank 1 and is used to vaporize the carbon dioxide supplied from the storage tank 1. The high-efficiency mixing reactor 3 is connected to the carbon dioxide vaporizer 2 and is used to perform bubble reaction and water-soluble reaction on the vaporized carbon dioxide. This provides efficient solutions for precise calculation of the target dosing value, precise control of the dosing amount, and rapid dissolution reaction of carbon dioxide, improving the accuracy of carbon dioxide dosing and increasing the reaction rate of carbon dioxide.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A carbon dioxide precise dosing device, characterized in that, This includes carbon dioxide storage tanks, carbon dioxide vaporizers, and high-efficiency mixing reactors; The carbon dioxide vaporizer is connected to the gas output end of the carbon dioxide storage tank and is used to vaporize the carbon dioxide delivered from the carbon dioxide storage tank. The high-efficiency mixing reactor is connected to the carbon dioxide vaporizer and is used to perform bubble reaction and water-soluble reaction on the vaporized carbon dioxide. The internal cavity of the high-efficiency mixing reactor is provided with micro-nano aerators, free contact chambers, forced mixing chambers and high-pressure loading chambers from bottom to top. The micro-nano aerator is used to generate micro-nano bubbles when carbon dioxide flows through it, and the generated micro-nano bubbles enter the free contact cavity. Within the free contact cavity, carbon dioxide freely mixes and contacts with water under the action of micro- and nano-bubbles; Within the forced mixing chamber, carbon dioxide and water are forcibly mixed; Within the high-pressure loading chamber, carbon dioxide is subjected to high-pressure loading to enhance its solubility.

2. The carbon dioxide precise dosing device according to claim 1, characterized in that, The connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor is equipped with a precision dosing control component for accurately controlling the amount of carbon dioxide added.

3. The carbon dioxide precise dosing device according to claim 2, characterized in that, The precision dosing control component includes a PLC, an automatic flow regulating valve, and a flow meter; The automatic flow regulating valve and the flow meter are both installed on the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor, and the automatic flow regulating valve and the flow meter are both connected to the PLC signal. The flow meter is used to monitor the instantaneous flow rate of carbon dioxide in the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor, and to send the monitored instantaneous flow rate data to the PLC. The PLC is used to acquire the instantaneous flow data sent by the flow meter, compare it with the preset target flow data, generate control opening data of the regulating valve, and send the generated control opening data to the automatic flow regulating valve. The automatic flow regulating valve is used to adjust the instantaneous flow rate of carbon dioxide on the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor according to the control opening data sent by the PLC.

4. The carbon dioxide precise dosing device according to claim 3, characterized in that, The precise dosing control component also includes a temperature sensor and a pressure sensor installed on the connecting pipeline between the carbon dioxide vaporizer and the high-efficiency mixing reactor, and both the temperature sensor and the pressure sensor are connected to the PLC signal. The temperature sensor is used to monitor the temperature of carbon dioxide gas on the connecting pipeline and transmit the monitored temperature data to the PLC. The pressure sensor is used to monitor the carbon dioxide gas pressure on the connecting pipeline and transmit the monitored pressure data to the PLC. The PLC calculates the required carbon dioxide gas volume ratio based on the acquired temperature data, pressure data, and the ratio of gas volume to temperature and pressure, and then sends it to the automatic flow regulating valve.

5. The carbon dioxide precise dosing device according to claim 4, characterized in that, The PLC specifically includes: The instantaneous flow data acquisition module is used to acquire the instantaneous flow data sent by the flow meter; The regulating valve control opening data generation module is used to compare with the preset target flow data to generate the regulating valve control opening data; A control opening data sending module is used to send the generated control opening data to the automatic flow regulating valve; Temperature and pressure data acquisition module, used to acquire temperature and pressure data; The gas volume ratio calculation and generation module is used to calculate and generate the required carbon dioxide gas volume ratio data based on the obtained temperature data, pressure data, and the proportional relationship between gas volume and temperature and pressure. The gas volume ratio data transmission module is used to transmit the generated carbon dioxide gas volume ratio data to the automatic flow regulating valve.

6. The carbon dioxide precise dosing device according to claim 3, characterized in that, The precise carbon dioxide dosing device also includes a pH detection device for detecting the pH value of the raw water entering the high-efficiency mixing reactor.

7. The carbon dioxide precise dosing device according to claim 6, characterized in that, The pH detection device includes a housing, an inlet regulating valve connected to the inlet pipe of the housing, an outlet regulating valve connected to the outlet pipe of the housing, a pH meter slidably installed inside the housing, and a flow-slowing groove for water flow inside the housing.

8. The carbon dioxide precise dosing device according to claim 3, characterized in that, The precise carbon dioxide dosing device also includes a booster pump for pressurizing the raw water entering the high-efficiency mixing reactor.

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