Acid-alkali generation device without requirement for degassing

Abstract

The invention discloses a high and low pressure acid-alkali generation device without a requirement for degassing or a requirement for additionally providing a solution driving unit. The device is widely applied in chemical analysis, and particularly provides a very convenient working mode for ion chromatography and potentiometric titration. A principle of the acid-alkali generation device is thattwo cavity bodies are utilized, electrodes and a high-pressure acid-alkali generation cavity are separated by an ion exchange membrane group, H2 and O2 which are generated by electrolysis of two cavities cannot enter the acid or alkali generation cavity body in the high-pressure cavity, so that a high-pressure degassing part is omitted; and through such structure, not only is cost of an instrument reduced, but also a fault rate of the instrument is reduced. The invention discloses three devices formed by a method, i.e., 1, a three-cavity-body double-liquid-storage-tank acid-alkali generationdevice; 2, a three-cavity-body single-liquid-storage-tank acid-alkali generation device; and 3, a five-cavity-body single-liquid-storage-tank acid-alkali simultaneous generation device.

Description

technical field [0001] The invention relates to a novel high-pressure or low-pressure acid-base generating device without degassing. This acid-base generating device can be used in various instruments and equipment that need to generate a stable concentration of acid solution or alkali solution online, especially in ion chromatography. It has a very wide range of applications in mobile phase and acid-base potentiometric titration. The invention can generate stable acid solutions or alkaline solutions with different concentrations on-line. When applied to ion chromatography, it can produce high-purity acid solution or high-purity alkali solution of any concentration required in the detection process online as the mobile phase of ion chromatography. Since the purity of the reagent is improved during the electrolysis process, on the one hand it reduces the The background value of the reagent, on the other hand, minimizes the technical requirements for the operator during the mob...

AI Technical Summary

Problems solved by technology

After entering the high-pressure chamber, the system pressure is equal to the pressure of the chromatographic column, so the pressure is very high (generally 10 to 20MPa), and the high-pressure degassing process is very complicated, and the high-pressure degassing pipe used is currently only imported and expensive

The ultra-fine inner diameter of this degassing tube is easily blocked by some suspended solids or impurities in the solution, thus increasing the failure rate of the product

Images