Device and method for continuously removing cations in water for hydrogen conductivity measurement

A hydrogen conductivity and water removal technology, which is applied in the direction of measuring devices, chemical instruments and methods, and the preparation of test samples, can solve problems affecting data accuracy, inaccurate display of hydrogen conductivity data, and affecting operational safety, etc.

Pending Publication Date: 2021-08-20
ZHEJIANG ZHENENG TECHN RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the deficiency that the cation resin exchange column exists is that the resin in the hydrogen ion exchange column will often fail (cations penetrate the resin layer), and the failed resin needs to be replaced and regenerated for reuse, which not only causes labor costs and economic costs, but also in When replacing the expired resin and during the flushing period after resin replacement, the hydrogen conductance data display is inaccurate, and the water quality cannot be accurately monitored. The level of resin regeneration will also affect the accuracy of the data and indirectly affect the operation safety

Method used

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  • Device and method for continuously removing cations in water for hydrogen conductivity measurement
  • Device and method for continuously removing cations in water for hydrogen conductivity measurement
  • Device and method for continuously removing cations in water for hydrogen conductivity measurement

Examples

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Effect test

Embodiment 1

[0051] Such as image 3 As shown, a device for continuously removing cations in water for hydrogen conductivity measurement includes: conductivity meter 8, pH meter 9, pure water tank 10, ammonia-containing water tank 11, electric deamination device 12, power supply 13, power Water pump 16 and flow meter 17;

[0052] Wherein the electric deamination device 12 comprises an ammonia removal compartment 7, a positive electrode chamber 5 and a negative electrode chamber 6; the positive electrode chamber 5 and the negative electrode chamber 6 are respectively located on the left and right sides of the electric deamination device 12, between the positive electrode chamber 5 and the ammonia removal compartment 7 A positive electrode chamber water distribution plate 14 is provided, and a negative electrode chamber water distribution plate 15 is provided between the negative electrode chamber 6 and the ammonia removal compartment 7; the positive electrode chamber 5 is provided with posi...

Embodiment 2

[0054] On the basis of Example 1, it is judged as Figure 4 The removal effect of ammonia after the continuous removal of cations in water for hydrogen conductivity measurement is shown:

[0055] 1. The specification of the ammonia removal equipment in this test is the CEDI-200 model developed by Hangzhou Water Treatment Technology Research and Development Center Co., Ltd. The strong acid ion resin is selected from Zhengguang Company 001×7 strong acid cation resin, and the packing density of this equipment is 1.25g / m . Device initialization, the initialization process is as follows:

[0056] Step 1. Configure about 1% NaOH solution, flow into the ammonia removal compartment, and soak for 12 hours;

[0057] Step 2. Use pure water to rinse the 1% NaOH solution in the equipment until the conductivity is less than 0.3μS / cm;

[0058] Step 3. Configure about 1% HCl solution, flow into the ammonia removal compartment, and soak for 12 hours;

[0059] Step 4. Use pure water to rins...

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Abstract

The invention relates to a device for measuring hydrogen conductivity and continuously removing cations in water. The device comprises a conductivity meter, a pH meter, a pure water tank, an ammonia-containing water tank, an electric deamination device, a power supply, a power water pump and a flow meter, wherein the electric deamination device comprises an ammonia removal compartment, a positive electrode chamber and a negative electrode chamber; the positive electrode chamber and the negative electrode chamber are respectively positioned on the left side and the right side of the electric deamination device; and a positive electrode chamber water distribution plate is arranged between the positive electrode chamber and the ammonia removal compartment. The device disclosed by the invention has the beneficial effects that the structure of an electrical desorption method is optimized, and the device for continuously removing cations in water for hydrogen conductivity measurement is designed, so that ammonia water can be efficiently removed. The cation exchange membrane is selected, so that anions can be prevented from entering the ammonia removal compartment, and anion pollution is avoided; and the positive electrode chamber and the negative electrode chamber which are used for providing a direct-current electric field are arranged, and strong acid type ion exchange resin is arranged in the ammonia removal compartment, so that the efficiency of transferring ammonia water to ammonia radical ions in a chemical equilibrium manner is improved, and the removal efficiency is improved.

Description

technical field [0001] The invention belongs to the field of deammonization of boiler water, and in particular relates to a device and method for continuously removing cations in water for hydrogen conductivity measurement. Background technique [0002] At present, the main steam pressure of 300MW and above coal-fired generating units has reached supercritical and ultra-supercritical. In order to prevent corrosion of equipment and pipelines, the requirements for the quality of water vapor in the system are very strict. [0003] When boiler water vapor sampling water contains ammonia, the pH of the water quality changes. Due to the characteristics of ammonia water, a certain chemical balance is formed in the form of coexistence of molecules and ions in the water. See the following chemical balance formula: [0004] NH 3 +H 2 0===NH 3 ·H 2 O (reversible reaction) [0005] NH 3 ·H 2 O===NH 4 + +OHˉ(reversible reaction) [0006] Some ammonia molecules react with water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/48G01N1/34G01N1/40G01N27/06G01N31/16C02F1/42C02F101/16
CPCC02F1/48C02F2001/425C02F2101/16G01N1/34G01N1/4005G01N27/06G01N31/16G01N2001/4011G01N2001/4038
Inventor 张贺胡鉴耿徐浩然冯向东陈彪付晓靖金水玉金可勇
Owner ZHEJIANG ZHENENG TECHN RES INST
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