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在磺化法苯酚生产中,需用SO_2气体将苯酚钠盐溶液连续地酸化成75％—78％的粗制苯酚。71年在江苏省计量所帮助下,采用了一种结构简单的酸度测量系统来代替取样试纸测定终点的办法,克服了测试麻烦、误差大之弊,又改善了操作,提高了产品质量和产率。这套测量系统经几年来运转和不断改进,性能基本稳定、可靠、维护方便,适合非自控流程和中小化工企业作酸度测试之用,它较工业酸度计更易推广而深受工人欢迎。
Phenol in the sulfonation process, the need to use SO2 gas sodium phenate solution was continuously acidified into 75% -78% of the crude phenol. 71 years in Jiangsu Province, with the help of metrology, the use of a simple structure of the acidity measurement system instead of sampling test paper endpoint, to overcome the test trouble, the error of the disadvantages, but also improve the operation and improve product quality and production rate. The measuring system has been running and improving continuously over the past few years. Its performance is basically stable, reliable and easy to maintain. It is suitable for the non-automatic control process and the acidity test of small and medium-sized chemical enterprises. It is more popular than industrial acidity meters and welcomed by workers.