Brine dispensing system

Abstract

The utility model relates to a kind of brine configuration system, including mixing tank and control unit, mixing tank is set water inlet and thick brine mouth, the water inlet be connected with water inlet pipe, the thick brine mouth be connected with thick brine pipe, the water inlet pipe is set first control valve, the thick brine pipe is set second control valve, the thick brine pipe is set conductivity meter, the control unit is respectively connected with conductivity meter and first control valve, the control unit is set to control the opening duration of the second control valve to input the thick brine of preset amount in the mixing tank and according to the concentration of thick brine detected by the conductivity meter again control the opening duration of the first control valve to adjust the flow proportion of water quantity and thick brine. The brine configuration system of the utility model is installed in thick brine pipe with conductivity meter, accurately control the salt concentration of brine, avoid the influence of thick brine concentration fluctuation;It improves the degree of automation and the accuracy of brine configuration.

Description

Technical Field

[0001] This utility model relates to the field of brine preparation technology, and in particular to a brine preparation system. Background Technology

[0002] In the decolorization ion exchange process, a brine of a certain concentration needs to be prepared, typically using a 10% NaCl solution. Currently, the brine is prepared by mixing concentrated brine (25% NaCl) with pure water in a static mixer at a specific ratio, with the process automatically controlled by a flow meter and control valve. However, this existing method has the following problems:

[0003] The concentration of concentrated brine may change. When the concentration of concentrated brine is not equal to 25%, the concentration of the prepared brine will also change, which will affect the regeneration effect of the resin.

[0004] Fluctuations in the control valve conditions can lead to unstable flow rates, which in turn can cause changes in the concentration of the regenerated brine.

[0005] Due to the difficulty in online measurement of salt concentration, existing brine preparation systems exhibit certain instability, affecting the effectiveness of the decolorization ion exchange process. Therefore, a more stable and accurate brine preparation system and method are needed. Utility Model Content

[0006] To address the aforementioned problems in the prior art, this utility model provides a stable and accurate brine preparation system.

[0007] To achieve the above objectives, this utility model provides a brine preparation system, characterized in that the system includes a mixing tank and a control unit. The mixing tank is equipped with a water inlet and a concentrated brine outlet. The water inlet is connected to a water inlet pipe, and the concentrated brine outlet is connected to a concentrated brine pipe. The water inlet pipe is equipped with a first control valve, and the concentrated brine pipe is equipped with a second control valve and a conductivity meter. The control unit is connected to both the conductivity meter and the first control valve. The control unit is configured to control the opening duration of the second control valve to input a preset amount of concentrated brine into the mixing tank, and to further control the opening duration of the first control valve based on the concentration of the concentrated brine detected by the conductivity meter to adjust the ratio of water volume to concentrated brine flow rate.

[0008] Preferably, the mixing tank is equipped with a circulation pump, the input and discharge ends of which are connected to the mixing tank for mixing the dilute brine in the mixing tank.

[0009] Preferably, a vortex flow meter is installed in the water inlet pipe, and the control unit is connected to the vortex flow meter. The control unit is configured to control the opening duration of the first control valve based on the water flow rate detected by the vortex flow meter in the water inlet pipe.

[0010] Preferably, an electromagnetic flow meter is installed in the concentrated brine pipe, and the control unit is connected to the electromagnetic flow meter. The control unit is configured to control the opening duration of the second control valve based on the flow rate of the concentrated brine in the concentrated brine pipe detected by the electromagnetic flow meter.

[0011] The beneficial effects of this utility model are as follows:

[0012] The brine preparation system of this invention installs a conductivity meter in the concentrated brine pipe to monitor the conductivity value of the concentrated brine in real time, accurately control the salt concentration of the brine, avoid the influence of concentrated brine concentration fluctuations, and circumvent the problem of brine concentration changes caused by unstable flow control in traditional methods. It simplifies the preparation process, improves the degree of automation and the accuracy of brine preparation, and enhances the stability of resin regeneration during decolorization ion exchange. Compared with traditional methods, this method does not require expensive control valves and static mixers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the brine preparation system of this utility model. Detailed Implementation

[0014] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.

[0015] like Figure 1 The diagram illustrates a specific embodiment of the brine preparation system of this invention, particularly suitable for brine preparation in decolorization ion exchange processes, avoiding instability factors present in current brine preparation systems. The system includes a mixing tank 1 and a control unit. The mixing tank 1 receives water and concentrated brine to form a diluted brine. The mixing tank 1 has a water inlet and a concentrated brine outlet. The water inlet is connected to a water inlet pipe, and the concentrated brine outlet is connected to a concentrated brine pipe. The water inlet pipe is equipped with a first control valve 3, and the concentrated brine pipe is equipped with a second control valve 6. A conductivity meter 5 is also installed on the concentrated brine pipe. The control unit is connected to both the conductivity meter 5 and the first control valve 3. The control unit is configured to control the opening duration of the second control valve 6 to input a preset amount of concentrated brine into the mixing tank 1, and to further control the opening duration of the first control valve 3 based on the concentration of the concentrated brine detected by the conductivity meter 5 to adjust the ratio of water volume to concentrated brine flow rate.

[0016] In the brine preparation system of this invention, the salt concentration is indirectly measured by the conductivity meter 5 in the concentrated brine pipe, and the brine is prepared by precisely controlling the mixing ratio of water and concentrated brine. This effectively solves the problems of concentrated brine concentration fluctuation and unstable flow control, and improves the accuracy and stability of brine preparation.

[0017] Regarding the relationship between conductivity and salt concentration:

[0018] Conductivity and salt concentration are linearly correlated within a certain range (2%–15% NaCl, where the conductivity and concentration of saline solution are linear in Hogfeldt's Three-parameter model). Therefore, salt concentration can be indirectly measured using a conductivity meter 5 by establishing a standard curve between conductivity and salt concentration in advance. The conductivity meter 5 is inexpensive and easy to install, making it suitable for online measurement of salt concentration.

[0019] The conductivity meter 5 measures salt concentrations ranging from 2% to 30% NaCl.

[0020] The mixing tank 1 is equipped with a circulation pump, the input end and the discharge end of which are connected to the mixing tank 1. The circulation pump is used to mix the dilute brine in the mixing tank 1 and ensure that the solution is mixed evenly.

[0021] A vortex flow meter 2 is installed in the water inlet pipe. The control unit is connected to the vortex flow meter 2. The control unit is configured to control the opening duration of the first control valve 3 by the water flow rate of the water inlet pipe detected by the vortex flow meter 2, thereby controlling the water flow rate.

[0022] An electromagnetic flow meter 4 is installed in the concentrated brine pipe. The control unit is connected to the electromagnetic flow meter 4. The control unit is configured to control the opening duration of the second control valve 6 by controlling the flow rate of the concentrated brine in the concentrated brine pipe detected by the electromagnetic flow meter 4, so as to control the flow rate of the concentrated brine.

[0023] The main workflow for preparing brine using the brine preparation system of this invention is as follows:

[0024] Set the volume of concentrated brine entering mixing tank 1;

[0025] Open the second control valve 6 of the concentrated brine pipe, and the concentrated brine enters the mixing tank 1. Stop when the set volume is reached. At the same time, the control system calculates the total amount of salt in the brine based on the concentration value and volume information provided by the conductivity meter 5.

[0026] Based on the calculated salt content, determine the volume of pure water to be added, control the first control valve 3 in the water inlet pipe, add pure water according to the set volume, and stop when the set amount is reached;

[0027] Start the circulation pump to stir the solution, making it uniform and ensuring a stable brine concentration.

[0028] The beneficial effects of this utility model are as follows:

[0029] The brine preparation system of this invention involves installing a conductivity meter 5 in the concentrated brine pipe to monitor the conductivity value of the concentrated brine in real time, accurately measure the salt concentration of the brine, and calculate the salinity in conjunction with an electromagnetic flowmeter. The amount of deionized water added is then quantitatively determined based on the total salinity. This avoids the influence of concentrated brine concentration fluctuations and circumvents the problem of brine concentration changes caused by unstable flow control in traditional methods. It simplifies the preparation process, improves the degree of automation and the accuracy of brine preparation, and enhances the stability of resin regeneration during decolorization ion exchange. Compared to traditional methods, this method does not require expensive control valves and static mixers.

[0030] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. A brine preparation system, characterized in that, The system includes a mixing tank and a control unit. The mixing tank is equipped with a water inlet and a concentrated brine inlet. The water inlet is connected to a water inlet pipe, and the concentrated brine inlet is connected to a concentrated brine pipe. The water inlet pipe is equipped with a first control valve, and the concentrated brine pipe is equipped with a second control valve and a conductivity meter. The control unit is connected to both the conductivity meter and the first control valve. The control unit is configured to control the opening duration of the second control valve to input a preset amount of concentrated brine into the mixing tank, and to control the opening duration of the first control valve based on the concentration of the concentrated brine detected by the conductivity meter to adjust the ratio of water volume to concentrated brine flow rate.

2. The brine preparation system according to claim 1, characterized in that, The mixing tank is equipped with a circulation pump, the input and discharge ends of which are connected to the mixing tank for mixing the dilute brine in the mixing tank.

3. The brine preparation system according to claim 1, characterized in that, A vortex flow meter is installed in the water inlet pipe, and the control unit is connected to the vortex flow meter. The control unit is configured to control the opening duration of the first control valve based on the water flow rate detected by the vortex flow meter in the water inlet pipe.

4. The brine preparation system according to claim 1, characterized in that, An electromagnetic flow meter is installed in the concentrated brine pipe, and the control unit is connected to the electromagnetic flow meter. The control unit is configured to control the opening duration of the second control valve based on the flow rate of the concentrated brine in the concentrated brine pipe detected by the electromagnetic flow meter.

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