Online testing equipment and method for acidity of oxidation solution or alkalinity of circulating working solution in process of preparing hydrogen peroxide by anthraquinone method

• Main Authors: BAI LIGUANG, CHAI CHUNLING, SHEN CHONG, SHEN JINGJING, ZHAO XIAODONG, PANG FEI
• Format: Patent
• Language: Chinese; English
• Published: 08.04.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to online testing equipment and method for acidity of oxidation liquid or alkalinity of circulating working solution in a process of preparing hydrogen peroxide by an anthraquinone method, the online testing equipment comprises an automatic quantitative sampling system and an automatic titration system, and the automatic quantitative sampling system comprises a six-way valve, a quantitative loop, a three-way valve and a steady flow valve; the automatic titration system comprises a potentiometric titration cell, an electrode and quantitative titration equipment; the six-way valve, the three-way valve and the steady flow valve are connected in sequence; the quantitative ring is connected with the six-way valve; and the automatic sampling system is connected with the potentiometric titration system. According to the invention, online automatic sampling, titration and result analysis can be realized; inert gas is adopted to continuously purge the six-way valve group and is isolated from air,