Electrodeionization degassing hydrogen conductivity on-line monitoring device and method

Abstract

The application relates to an on-line monitoring device for degassing hydrogen conductivity of an electrodeionization system, which comprises a flow monitoring system, an electrodeionization system (4), a degassing heat exchange system (8), an on-line conductivity monitoring system (10) and a waste water and waste gas collecting system (9). The flow monitoring system is used for collecting sample water flow signals, realizing power supply and heating control of the electrodeionization system and the degassing heat exchange system. The electrodeionization system is used for replacing a traditional ion exchange column to remove cations in sample water and realizing continuous electric regeneration of resin. The degassing heat exchange system is used for degassing, heat exchange and cooling of sample water. The on-line conductivity monitoring system comprises a specific conductivity measuring module, a hydrogen conductivity measuring module, a degassing hydrogen conductivity measuring module, a control module, a memory and a display. The specific conductivity measuring module, the hydrogen conductivity measuring module and the degassing hydrogen conductivity measuring module are respectively used for specific conductivity measurement, hydrogen conductivity measurement and degassing hydrogen conductivity measurement. The control module is used for controlling the degassing temperature. The memory and the display are respectively used for data storage and display. The waste water and waste gas collecting system is used for collecting cooled waste water and waste gas and centrally performing waste water and waste gas treatment. The application further discloses a monitoring method.

Description

Technical Field

[0001] This invention relates to the field of water quality testing technology, and in particular to an online monitoring device and method for the conductivity of degassing hydrogen by electro-deionization. Background Technology

[0002] Online degassing conductivity monitoring instruments are crucial for power plants in monitoring water quality and equipment performance. Current technology primarily uses a heating and boiling method to degas and decarbonize the sample water, measuring the conductivity after cooling. However, existing equipment has the following shortcomings:

[0003] (1) Existing boiling method degassing conductivity equipment has high energy consumption, and the temperature of the high-temperature cooling water sample is around 50 degrees, which affects the accurate measurement of conductivity.

[0004] (2) The existing equipment uses a nonlinear temperature compensation method, which has the problem of large data dispersion, increasing the uncertainty of the measurement data and failing to meet the water quality monitoring requirements of degassing hydrogen conductivity less than 0.15 μS / cm.

[0005] Therefore, there is a need to change the monitoring principle of online degassing conductivity monitoring instruments to form new technical solutions for online degassing conductivity monitoring instruments. Summary of the Invention

[0006] The purpose of this invention is to provide an online monitoring device and method for the conductivity of degassed hydrogen using an electro-deionization method. The device employs a degassing heat exchange system for sample water heat exchange and degassing, and introduces an energy circulation mechanism, which can significantly reduce the power of the heater, reducing the power by 60% compared to existing degassing devices on the market and improving energy utilization. It also significantly reduces the temperature of the sample water during heat exchange, and can control the temperature difference between the water sample before and after degassing within 5°C, achieving efficient degassing heat exchange.

[0007] The present invention provides an online monitoring device for the conductivity of degassing hydrogen by electro-deionization, comprising: a flow monitoring system, an electro-deionization system (4), a degassing heat exchange system (8), an online conductivity monitoring system (10), and a sewage discharge system (9); the flow monitoring system is connected to the electro-deionization system (4) and the degassing heat exchange system (8) respectively; the electro-deionization system (4) and the degassing heat exchange system (8) are connected to the sewage discharge system (9) respectively through pipelines;

[0008] in:

[0009] The flow monitoring system is used to collect sample water flow signals and realize the power supply and heating control of the electro-deionization system (4) and the degassing heat exchange system (8);

[0010] The electro-deionization system (4) is used to replace the traditional ion exchange column to remove cations from the sample water and realize continuous electro-regeneration of the resin;

[0011] The degassing heat exchange system (8) is used to degas and cool the sample water.

[0012] The online conductivity monitoring system (10) includes a specific conductivity measurement module (3), a hydrogen conductivity measurement module (6), a degassing hydrogen conductivity measurement module (7), a control module, a memory, and a display. Specifically, the specific conductivity measurement module (3) measures the specific conductivity based on the analysis and calculation of collected sample water data; the hydrogen conductivity measurement module (6) measures the hydrogen conductivity based on the analysis and calculation of collected sample water data; the degassing hydrogen conductivity measurement module (7) measures the degassing hydrogen conductivity based on the analysis and calculation of collected sample water data; the control module controls the degassing temperature; and the memory and display store and display the specific conductivity, the hydrogen conductivity, and the degassing hydrogen conductivity, respectively.

[0013] The sewage system (9) is used to collect the wastewater and exhaust gas from the cooling process and to centrally treat the wastewater.

[0014] Preferably, the flow monitoring system includes an inlet valve (1), a first digital flow meter (2), and a second digital flow meter (5); wherein, the inlet valve (1) is connected to the online sample water to be tested and is used to control the flow rate of the online sample water to be tested into the online monitoring device; the inlet and outlet of the first digital flow meter (2) are respectively connected to the specific conductivity measurement module (3) and the inlet valve (1) to collect the flow rate signal of the online sample water to be tested and realize the heating control of the degassing heat exchange system (8); the inlet and outlet of the second digital flow meter (5) are respectively connected to the electrodeionization system (4) and the degassing hydrogen conductivity measurement module (7) to collect the flow rate signal of the degassed sample water and realize the power supply control of the electrodeionization system (4).

[0015] Preferably, the electro-deionization system (4) includes a water production tank; wherein the water production tank is provided with a sample water inlet (11), a sample water outlet (12), a reclaimed water inlet (13), and a reclaimed water outlet (14), the sample water inlet (11) is connected to the specific conductivity measurement module (3), the sample water inlet (11) is internally connected to the sample water outlet (12), the sample water outlet (12) is connected to the hydrogen conductivity measurement module (6); the reclaimed water inlet (13) is connected to the digital flow meter (5), the reclaimed water inlet (13) is internally connected to the reclaimed water outlet (14), and the reclaimed water outlet (14) is connected to the cooling water inlet (33) of the sewage system (9).

[0016] Preferably, the degassing heat exchange system (8) includes a heat exchanger module (15), an isolation support column (16), a preheater module (17), and a reheater module (18); the heat exchanger module (15) is connected to the preheater module (17) through the isolation support column (16), and the reheater module (18) is connected to the heat exchanger module (15) and the preheater module (17) through pipelines respectively, wherein the preheater module (17) is connected to different positions of the reheater module (18) through two pipelines respectively, thereby forming a liquid circulation.

[0017] Preferably, the heat exchanger module (15) includes a heat exchanger outer cylinder and a double spiral coil. The lower end of the heat exchanger outer cylinder is provided with a cooling water inlet (20), which is connected to the hydrogen conductivity measurement module (6). The upper end of the heat exchanger outer cylinder is provided with a cooling water outlet (21), which is connected to the preheater module (17) through the isolation support (16). The double spiral coil is located inside the heat exchanger outer cylinder. The water inlet end of the double spiral coil is connected to a first hot water inlet (31) which is connected to the degassed sample water outlet (27) of the reheater module (18). The water outlet end of the double spiral coil is connected to a second hot water outlet (34) which passes through the upper end of the heat exchanger outer cylinder and is connected to the degassed hydrogen conductivity measurement module (7).

[0018] Preferably, the preheater module (17) includes a preheater outer cylinder, a primary sampler, and a single spiral coil. The lower end of the preheater outer cylinder is provided with a first preheated water inlet (22), which is connected to the heat exchanger module (15) via the isolation support (16). The upper end of the preheater outer cylinder is provided with an exhaust port (23), and the upper end of the preheater outer cylinder is also provided with a heat exchange diversion outlet (24) connected to the hot water inlet (35) of the sewage system (9). The single spiral coil... The tube is located inside the outer cylinder of the heat exchanger. The water inlet end of the single spiral coil is connected to the first steam inlet (29) connected to the first steam outlet (28) of the reheater module (18). The water outlet end of the single spiral coil is connected to the degassed sample water outlet (27) connected to the second steam inlet (34) of the sewage system (9). The preheated water outlet (25) located on the lower right side of the outer cylinder of the preheater passes through the right side wall of the outer cylinder of the preheater and is connected to the second preheated water inlet (26) of the reheater module (18).

[0019] Preferably, the reheater module (18) includes a reheater outer cylinder, a temperature sensor (19), a cone sampler, and a disc heater. The lower left side wall of the reheater outer cylinder is provided with a second preheated water inlet (26), which is connected to the preheated water outlet (25) of the preheater module (17). The upper end of the reheater outer cylinder is provided with a first steam outlet (28), which is connected to the first steam inlet (29) of the single spiral coil of the preheater module (17). The lower end of the reheater outer cylinder is provided with... The first hot water inlet (31) of the double spiral coil of the heat exchanger module is connected to the degassed sample water outlet (27); the disc heater is coiled around the conical sampler, with both ends passing through the lower end of the reheater outer cylinder and connected to the online conductivity monitoring system (10) via cables; a gap is left between the conical sampler and the cylinder wall of the reheater outer cylinder; the temperature sensor (19) is inserted into the reheater outer cylinder and fixed above the rear side wall of the reheater outer cylinder, and the temperature sensor (19) is connected to the online conductivity monitoring system (10) via cables.

[0020] Preferably, the sewage system (9) includes a sewage pipe, wherein the top of the sewage pipe is provided with a second hot water inlet (35) and a second steam inlet (34) from left to right, the second hot water inlet (35) and the second steam inlet (34) are respectively connected to the heat exchange diversion outlet (24) at the upper end of the outer cylinder of the preheater and the second steam outlet (30) of the preheater; the cooling water inlet (33) at the bottom left side of the sewage pipe is connected to the regeneration outlet (14) of the electro-deionization system (4).

[0021] Preferably, the bottom of the drain pipe is provided with a drain connector for discharging wastewater generated by the device.

[0022] A second aspect of the present invention provides a method for online monitoring of the conductivity of electro-deionized degassing hydrogen, implemented based on the monitoring device of the first aspect, comprising:

[0023] S1, the inlet valve (1) is connected to the online sample water. When the inlet valve is opened, the sample water flows through the inlet valve (1) and the first digital flow meter (2) in sequence. The flow information collected by the first digital flow meter (2) is transmitted to the flow monitoring system, and further transmitted to the online conductivity monitoring system (10) for calculation and display, thereby starting the device heating cycle.

[0024] S2, the online sample water to be tested enters the specific conductivity measurement module (3) through the first digital flow meter (2) to measure the specific conductivity and obtain the specific conductivity value, and transmits the specific conductivity value to the online conductivity monitoring system (10).

[0025] S3, the sample water flowing out of the specific conductivity measurement module (3) enters the deionization system (4) through the sample water inlet (11), and after being processed by the deionization system (4), it flows into the hydrogen conductivity measurement module (6) through the sample water outlet (12) to obtain the hydrogen conductivity value. The hydrogen conductivity value is then transmitted to the online conductivity monitoring system (10) for calculation and display.

[0026] S4, based on the specific conductivity value and the hydrogen conductivity value, the pH and ammonia content of the online test sample water are calculated and displayed by the online conductivity monitoring system (10);

[0027] S5, the sample water flowing out of the hydrogen conductivity measurement module (6) enters the heat exchanger module (15) through the pipeline for primary preheating, and flows into the preheater (17) through the isolation support (16).

[0028] S6, after primary degassing and secondary preheating in the preheater (17), the gas enters the reheater (18) through the preheated water outlet (25) and the preheated water inlet (26) in sequence. The exhaust gas generated by the preheater (17) is discharged through the exhaust port (23). The heat exchange diversion outlet (24) of the preheater (17) enters the sewage system (9) through the second hot water inlet (35) of the sewage pipe.

[0029] S7, the sample water flowing through the preheated hot water outlet (25) and the second preheated hot water inlet (26) flows into the reheater (18) for full heating and degassing. The generated exhaust gas enters the single spiral coil in the preheater through the first steam outlet (28) of the upper end cover of the reheater, serving as the heat input for the secondary preheating of the preheater. Finally, it enters the sewage system (9) through the second steam outlet (30). The sample water after being fully degassed by the reheater flows into the double spiral coil through the degassed sample water outlet (27) and the first hot water inlet (31) for cooling. After cooling, it flows into the degassed hydrogen conductivity measurement module (7) through the hot water outlet (32) to measure and obtain the degassed hydrogen conductivity value. The degassed hydrogen conductivity value is transmitted to the online conductivity monitoring system (10) for calculation and display.

[0030] S8. After completing the degassing hydrogen conductivity measurement, the sample water flowing out of the degassing hydrogen conductivity measurement module (7) will enter the electro-deionization system (4) through the digital flow meter (5) and the regenerated water inlet (13). The flow information collected by the digital flow meter (5) will be transmitted to the flow monitoring system and then further transmitted to the online conductivity monitoring system (10) for calculation and display. The regeneration working mode of the electro-deionization system will be turned on. After recycling, the water will flow from the regenerated water outlet (14) through the pipeline into the cooling water inlet (33) of the sewage pipe and then into the sewage system (9).

[0031] S9, wastewater and waste gas enter the sewage system (9) for further cooling and then are discharged through the sewage outlet to complete the entire measurement cycle of the device.

[0032] The electrodeionization-based computational pH online monitoring device and method of the present invention have the following beneficial effects:

[0033] (1) The present invention proposes an online monitoring method for the conductivity of dehydrogenated hydrogen by electro-deionization. The electro-deionization system utilizes the principles of electrodialysis and ion exchange to achieve efficient removal of cations from water, and automatically regenerates the resin through water electrolysis. Compared with traditional ion exchange resin systems, the electro-deionization system has advantages such as simple operation, efficient deionization, continuous operation, and high reliability.

[0034] (2) The present invention proposes an online monitoring device for the conductivity of degassing hydrogen by electro-deionization. The degassing heat exchange system is an integrated system that combines a two-stage degassing system, a double-spiral coil high-efficiency heat exchange system, and a three-stage heating system. The heat exchange module completes the primary heating and heat exchange functions; the preheater module has the functions of primary degassing and secondary heating; and the reheater completes the functions of secondary degassing and tertiary heating. By optimizing energy utilization step by step and introducing an energy circulation mechanism, the degassing heat exchange system can significantly reduce the heater power, reducing the power by 60% compared to existing degassing devices on the market, thus improving energy utilization; it also significantly improves heat exchange efficiency, enabling the temperature difference between the water sample before and after degassing to be controlled within 5°C, achieving efficient degassing and heat exchange. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of an online monitoring device for the conductivity of deionized hydrogen provided in an embodiment of the present invention.

[0037] Figure 2 This is a flowchart of a method for online monitoring of the conductivity of electro-deionized degassing hydrogen according to an embodiment of the present invention.

[0038] Figure label:

[0039] 1-Inlet valve; 2-First digital flow meter; 3-Specific conductivity measurement module; 4-Electrodeionization system; 5-Second digital flow meter;

[0040] 6-Hydrogen conductivity measurement module; 7-Degassed hydrogen conductivity measurement module; 8-Degassed heat exchange system; 9-Sewage discharge system;

[0041] 10 - Conductivity electrode control module; 11 - Sample water inlet; 12 - Sample water outlet; 13 - Reclaimed water inlet; 14 - Reclaimed water outlet;

[0042] 15-Heat exchanger module; 16-Isolation support; 17-Preheater module; 18-Reheater module; 19-Temperature sensor;

[0043] 20 - Cooling water inlet; 21 - Cooling water outlet; 22 - First preheating water inlet; 23 - Exhaust port; 24 - Heat exchanger branch outlet;

[0044] 25 - Preheated water outlet; 26 - Second preheated water inlet; 27 - Degassed sample water outlet; 28 - First steam outlet; 29 - First steam inlet;

[0045] 30 - Second steam outlet; 31 - First hot water inlet; 32 - Hot water outlet; 33 - Cooling water inlet; 34 - Second steam inlet;

[0046] 35 - Second hot water inlet; 36 - Stainless steel pagoda connector. Detailed Implementation

[0047] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] See Figure 1This embodiment provides an online monitoring device for the conductivity of degassing hydrogen via electro-deionization, comprising: a flow monitoring system, an electro-deionization system 4, a degassing heat exchange system 8, an online conductivity monitoring system 10, and a sewage discharge system 9; the flow monitoring system is connected to the electro-deionization system 4 and the degassing heat exchange system 8 respectively; the electro-deionization system 4 and the degassing heat exchange system 8 are respectively connected to the sewage discharge system 9 via pipelines;

[0051] in:

[0052] The flow monitoring system is used to collect sample water flow signals and realize the power supply and heating control of the electro-deionization system 4 and the degassing heat exchange system 8;

[0053] The electro-deionization system 4 is used to replace the traditional ion exchange column to remove cations from the sample water and realize continuous electro-regeneration of the resin.

[0054] The degassing heat exchange system 8 is used to degas, exchange heat, and cool the sample water.

[0055] The online conductivity monitoring system 10 includes a specific conductivity measurement module 3, a hydrogen conductivity measurement module 6, a degassed hydrogen conductivity measurement module 7, a control module, a memory, and a display. The specific conductivity measurement module 3 measures the specific conductivity based on the analysis and calculation of collected sample water data. The hydrogen conductivity measurement module 6 measures the hydrogen conductivity based on the analysis and calculation of collected sample water data. The degassed hydrogen conductivity measurement module 7 measures the degassed hydrogen conductivity based on the analysis and calculation of collected sample water data. The control module controls the degassed temperature. The memory and display store and display the specific conductivity, hydrogen conductivity, and degassed hydrogen conductivity, respectively.

[0056] The sewage system 9 is used to collect the wastewater and exhaust gas from the cooling process and to centrally treat the wastewater.

[0057] In a preferred embodiment, the flow monitoring module includes an inlet valve 1, a first digital flow meter 2, and a second digital flow meter 5. The inlet valve 1 is connected to the online sample water and is used to control the flow rate of the online sample water entering the online monitoring device. The inlet and outlet of the first digital flow meter 2 are connected to the specific conductivity measurement module 3 and the inlet valve 1, respectively, to collect the flow signal of the online sample water and realize heating control of the degassing heat exchange system 8. The inlet and outlet of the second digital flow meter 5 are connected to the electro-deionization system 4 and the degassing hydrogen conductivity measurement module 7, respectively, to collect the flow signal of the degassed sample water and realize power supply control of the electro-deionization system 4.

[0058] In a preferred embodiment, the electro-deionization system 4 includes a water production tank; wherein the water production tank is provided with a sample water inlet 11, a sample water outlet 12, a reclaimed water inlet 13, and a reclaimed water outlet 14. The sample water inlet 11 is connected to the specific conductivity measurement module 3, the sample water inlet 11 is internally connected to the sample water outlet 12, and the sample water outlet 12 is connected to the hydrogen conductivity measurement module 6; the reclaimed water inlet 13 is connected to the digital flow meter 5, the reclaimed water inlet 13 is internally connected to the reclaimed water outlet 14, and the reclaimed water outlet 14 is connected to the cooling water inlet 33 of the sewage discharge system 9.

[0059] In a preferred embodiment, the degassing heat exchange system 8 includes a heat exchanger module 15, an isolation support column 16, a preheater module 17, and a reheater module 18. The heat exchanger module 15 is connected to the preheater module 17 via the isolation support column 16, and the reheater module 18 is connected to both the heat exchanger module 15 and the preheater module 17 via pipelines. The preheater module 17 is connected to the reheater module 18 at different locations via two pipelines, thereby forming a liquid circulation.

[0060] In a preferred embodiment, the heat exchanger module 15 includes a heat exchanger outer cylinder and a double spiral coil. The lower end of the heat exchanger outer cylinder is provided with a cooling water inlet 20, which is connected to the hydrogen conductivity measurement module 6. The upper end of the heat exchanger outer cylinder is provided with a cooling water outlet 21, which is connected to the preheater module 17 through the isolation support 16. The double spiral coil is located inside the heat exchanger outer cylinder. The water inlet end of the double spiral coil is connected to a first hot water inlet 31, which is connected to the degassed sample water outlet 27 of the reheater module 18. The water outlet end of the double spiral coil is connected to a second hot water outlet 33, which passes through the upper end of the heat exchanger outer cylinder and is connected to the degassed hydrogen conductivity measurement module 7.

[0061] In a preferred embodiment, the preheater module 17 includes a preheater outer cylinder, a primary sampler, and a single spiral coil. The lower end of the preheater outer cylinder has a first preheated water inlet 22, which is connected to the heat exchanger module 15 via the isolation support 16. The upper end of the preheater outer cylinder has an exhaust port 23 and a heat exchange diversion outlet 24 connected to the hot water inlet 35 of the wastewater system 9. The single spiral coil is located inside the heat exchanger outer cylinder. The inlet end of the single spiral coil is connected to a first steam inlet 29 connected to the first steam outlet 28 of the reheater module 18, and the outlet end of the single spiral coil is connected to a degassed sample water outlet 27 connected to the second steam inlet 34 of the wastewater system 9. A preheated water outlet 25, located on the lower right side of the preheater outer cylinder, passes through the right side wall of the preheater outer cylinder and is connected to the second preheated water inlet 26 of the reheater module 18.

[0062] In a preferred embodiment, the reheater module 18 includes a reheater outer cylinder, a temperature sensor 19, a cone sampler, and a disc heater. The lower left side wall of the reheater outer cylinder has a second preheated water inlet 26, which is connected to the preheated water outlet 25 of the preheater module 17. The upper end of the reheater outer cylinder has a first steam outlet 28, which is connected to the first steam inlet 29 of the single spiral coil of the preheater module 17. The lower end of the reheater outer cylinder has a... The heat exchanger module has a first hot water inlet 31 connected to a degassed sample water outlet 27; the disc heater is coiled around the conical sampler, with both ends passing through the lower end of the reheater outer cylinder and connected to the online conductivity monitoring system 10 via cables; a gap is left between the conical sampler and the cylinder wall of the reheater outer cylinder; the temperature sensor 19 is inserted into the reheater outer cylinder and fixed above the rear side wall of the reheater outer cylinder, and the temperature sensor 19 is connected to the online conductivity monitoring system 10 via cables.

[0063] In a preferred embodiment, the sewage system 9 includes a sewage discharge cylinder, wherein a second hot water inlet 35 and a second steam inlet 34 are provided on the top of the sewage discharge cylinder from left to right. The second hot water inlet 35 and the second steam inlet 34 are respectively connected to the heat exchange diversion outlet 24 at the upper end of the preheater outer cylinder and the second steam outlet 30 of the preheater; the cooling water inlet 33 at the bottom left side of the sewage discharge cylinder is connected to the regeneration outlet 14 of the electro-deionization system 4.

[0064] In a preferred embodiment, the bottom of the drain cylinder is provided with a drain connector for discharging wastewater generated by the device. In this embodiment, the drain connector is a stainless steel pagoda connector 36. Ultimately, the wastewater generated by the device is discharged centrally through the stainless steel pagoda connector 36 at the bottom of the drain cylinder. Of course, those skilled in the art can also choose other corrosion-resistant and / or other types of connectors as drain connectors, all of which are within the protection scope of this invention. Example 2

[0065] See Figure 2 This embodiment provides a method for online monitoring of the conductivity of electrodeionized degassing hydrogen, including:

[0066] S1, the inlet valve 1 is connected to the online sample water. When the inlet valve is opened, the sample water flows through the inlet valve 1 and the first digital flow meter 2 in sequence. The flow information collected by the first digital flow meter 2 is transmitted to the flow monitoring system, and then further transmitted to the online conductivity monitoring system 10 for calculation and display, thereby starting the device heating cycle.

[0067] S2, the online water sample to be tested enters the specific conductivity measurement module 3 through the first digital flow meter 2 to measure the specific conductivity and obtain the specific conductivity value, and then transmits the specific conductivity value to the online conductivity monitoring system 10;

[0068] S3, the sample water flowing out of the conductivity measurement module 3 enters the deionization system 4 through the sample water inlet 11. After being processed by the deionization system 4, it flows into the hydrogen conductivity measurement module 6 through the sample water outlet 12 to obtain the hydrogen conductivity value. The hydrogen conductivity value is then transmitted to the online conductivity monitoring system 10 for calculation and display.

[0069] S4, based on the specific conductivity value and the hydrogen conductivity value, the pH and ammonia content of the online test sample water are calculated and displayed by the online conductivity monitoring system 10;

[0070] S5, the sample water flowing out of the hydrogen conductivity measurement module 6 enters the heat exchanger module 15 through the pipeline for primary preheating, and flows into the preheater 17 through the isolation support column 16;

[0071] S6, after primary degassing and secondary preheating in preheater 17, the gas enters reheater 18 through preheated hot water outlet 25 and preheated hot water inlet 26 in sequence. The exhaust gas generated by preheater 17 is discharged through exhaust port 23. The heat exchange diversion outlet 24 of preheater 17 enters sewage system 9 through second hot water inlet 35 of sewage pipe.

[0072] S7, the sample water flowing through the preheated hot water outlet 25 and the second preheated hot water inlet 26 flows into the reheater 18 for full heating and degassing. The generated exhaust gas enters the single spiral coil inside the preheater through the first steam outlet 28 of the upper end cover of the reheater, serving as the heat input for the secondary preheating of the preheater, and finally enters the sewage system 9 through the second steam outlet 30. The sample water that has been fully degassed by the reheater flows into the double spiral coil through the degassed sample water outlet 27 and the first hot water inlet 31 for cooling. After cooling, it flows into the degassed hydrogen conductivity measurement module 7 through the hot water outlet 32 ​​for measurement to obtain the degassed hydrogen conductivity value. The degassed hydrogen conductivity value is then transmitted to the online conductivity monitoring system 10 for calculation and display.

[0073] S8. After completing the degassing hydrogen conductivity measurement, the sample water flowing out of the degassing hydrogen conductivity measurement module 7 will enter the electro-deionization system 4 through the digital flow meter 5 and the regenerated water inlet 13. The flow information collected by the digital flow meter 5 will be transmitted to the flow monitoring system and then further transmitted to the online conductivity monitoring system 10 for calculation and display. The regeneration working mode of the electro-deionization system will be started. After recycling, the water will flow from the regenerated water outlet 14 through the pipeline into the cooling water inlet 33 of the sewage discharge cylinder and then into the sewage discharge system 9.

[0074] S9, wastewater and exhaust gas enter the sewage system 9 for further cooling and are then discharged through the sewage outlet, completing the entire measurement cycle of the device.

[0075] Through the above description of the embodiments, those skilled in the art can clearly understand that the above embodiments can be implemented by software, or by using software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solutions of the above embodiments can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, mobile hard drive, etc.), including several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; 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; and these 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.

Claims

1. An on-line monitoring device for deaerated hydrogen conductivity by electrodeionization, characterized by, The system comprises a flow monitoring system, an electrodeionization system, a degassing heat exchange system, an online conductivity monitoring system and a blowdown system; the flow monitoring system is connected with the electrodeionization system and the degassing heat exchange system respectively; the electrodeionization system and the degassing heat exchange system are connected with the blowdown system through pipelines respectively; The flow monitoring system is used for collecting sample water flow signals to realize power supply and heating control of the electrodeionization system and the degassing heat exchange system; The electrodeionization system is used for removing sample water cations to realize continuous resin electric regeneration instead of traditional ion exchange columns; The degassing heat exchange system is used for degassing and heat exchange cooling of sample water; The online conductivity monitoring system comprises a specific conductivity measurement module, a hydrogen conductivity measurement module, a degassing hydrogen conductivity measurement module, a control module, a memory and a display; the specific conductivity measurement module is used for measuring specific conductivity based on analysis and calculation of collected sample water data; the hydrogen conductivity measurement module is used for measuring hydrogen conductivity based on analysis and calculation of collected sample water data; the degassing hydrogen conductivity measurement module is used for measuring degassing hydrogen conductivity based on analysis and calculation of collected sample water data; the control module is used for controlling degassing temperature; the memory and the display are used for storing and displaying the specific conductivity, the hydrogen conductivity and the degassing hydrogen conductivity respectively; The blowdown system is used for collecting cooled waste water and waste gas and performing blowdown treatment; The degassing heat exchange system comprises a heat exchanger module, an isolation support, a preheater module and a reheater module; the heat exchanger module is communicated with the preheater module through the isolation support, and the reheater module is connected with the heat exchanger module and the preheater module through pipelines respectively, wherein the preheater module is communicated with different positions of the reheater module through two pipelines to form liquid circulation; The heat exchanger module comprises a heat exchanger outer cylinder and a double helix coil pipe, wherein the lower end of the heat exchanger outer cylinder is provided with a cooling water inlet communicated with the hydrogen conductivity measurement module, and the upper end of the heat exchanger outer cylinder is provided with a cooling water outlet connected with the preheater module through the isolation support; the double helix coil pipe is located in the heat exchanger outer cylinder, the water inlet end of the double helix coil pipe is connected with a first hot water inlet connected with a degassing sample water outlet of the reheater module, and the water outlet end of the double helix coil pipe is connected with a hot water outlet penetrating through the upper end of the heat exchanger outer cylinder and connected with the degassing hydrogen conductivity measurement module; ​ ​ The preheater module comprises a preheater outer cylinder, a primary sampler and a single spiral coil, wherein the lower end of the preheater outer cylinder is provided with a first preheated water inlet connected with the heat exchanger module through the isolation support; the upper end of the preheater outer cylinder is provided with an exhaust port, and the upper end of the preheater outer cylinder is also provided with a heat exchange shunt outlet connected with the second hot water inlet of the blowdown system; the single spiral coil is located inside the heat exchanger outer cylinder, the water inlet end of the single spiral coil is connected with the first steam inlet of the reheater module through the first steam outlet, and the water outlet end of the single spiral coil is connected with the second steam outlet of the blowdown system through the second steam inlet; the preheated water outlet arranged below the right side of the preheater outer cylinder is connected with the second preheated water inlet of the reheater module through the right side wall of the preheater outer cylinder.

2. The on-line monitoring device for EDI degassing hydrogen conductivity according to claim 1, characterized in that, The flow monitoring system comprises an inlet valve, a first digital flowmeter and a second digital flowmeter; wherein the inlet valve is communicated with the online sample water to be measured, and is used for controlling the flow of the online sample water to be measured into the online monitoring device; the inlet and outlet of the first digital flowmeter are connected with the specific conductance measurement module and the inlet valve respectively, and are used for collecting the flow signal of the online sample water to be measured, so as to realize the heating control of the degassing heat exchange system; the inlet and outlet of the second digital flowmeter are connected with the electrodeionization system and the degassing hydrogen conductance measurement module respectively, and are used for collecting the flow signal of the sample water after degassing, so as to realize the power supply control of the electrodeionization system.

3. The on-line monitoring device for EDI deaerated hydrogen conductivity according to claim 2, characterized in that, The electrodeionization system comprises a water preparation tank; wherein the water preparation tank is provided with a sample water inlet, a sample water outlet, a regenerated water inlet and a regenerated water outlet, the sample water inlet is connected with the specific conductance measurement module, the sample water inlet is connected with the inside of the sample water outlet, the sample water outlet is connected with the hydrogen conductance measurement module; the regenerated water inlet is connected with the second digital flowmeter, the regenerated water inlet is connected with the inside of the regenerated water outlet, and the regenerated water outlet is connected with the cooling water inlet of the blowdown system.

4. The on-line monitoring device for EDI deaerated hydrogen conductivity according to claim 3, characterized in that, The reheater module comprises a reheater outer cylinder, a temperature sensor, a conical sampler and a disc heater, wherein the lower left side wall of the reheater outer cylinder is provided with a second preheated water inlet connected with the preheated water outlet of the preheater module; the upper end of the reheater outer cylinder is provided with a first steam outlet connected with the first steam inlet of the single spiral coil of the preheater module; the lower end of the reheater outer cylinder is provided with a degassed sample water outlet connected with the first hot water inlet of the double spiral coil of the heat exchanger module; the disc heater is coiled around the conical sampler, and the two ends pass through the lower end of the reheater outer cylinder and are connected with the online conductivity monitoring system through a cable; a gap is left between the conical sampler and the cylinder wall of the reheater outer cylinder; the temperature sensor is inserted into the reheater outer cylinder and fixed above the rear side wall of the reheater outer cylinder, and the temperature sensor is connected with the online conductivity monitoring system through a cable.

5. The on-line monitoring device for EDI deaerated hydrogen conductivity according to claim 4, characterized in that, The blowdown system comprises a blowdown cylinder, wherein a second hot water inlet and a second steam inlet are arranged on the top of the blowdown cylinder from left to right, and the second hot water inlet and the second steam inlet are connected with the heat exchange shunt outlet on the upper end of the outer cylinder of the preheater and the second steam outlet of the preheater respectively; and a cooling water inlet on the left bottom of the blowdown cylinder is connected with the regenerated water outlet of the electrodeionization system.

6. The on-line monitoring device for EDI deaerated hydrogen conductivity according to claim 5, wherein, A blowdown joint for discharging wastewater generated by the blowdown device is arranged on the bottom of the blowdown cylinder.

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