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

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...

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

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