Research and design of an online monitoring device for hydrogen peroxide concentration

Abstract

Abstract To address the issues of manual measurement, inaccurate instrument measurement, and frequent manual intervention required for hydrogen efficiency, oxygen efficiency, and raffinate in the production of hydrogen peroxide using the anthraquinone process, a hydrogen peroxide concentration online monitoring device was designed. The device includes a sampling module, extraction module, temperature control module, detection module, and display module. The detection module is designed based on the amperometric analysis method, using a constant potential instrument with a three-electrode system for current detection, establishing a relationship model between current and hydrogen peroxide concentration. It also includes calibration and detection modes to reduce detection errors generated during long-term operation. The device enables online analysis of hydrogen peroxide concentration through online sampling, pretreatment, and testing analysis, with a detection range of 0.05-15 g/L. The device has demonstrated good accuracy and reliability and has been tested and applied in industrial settings.