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一、引言新发现的硫酸锰——水杨酸——对苯二酚湿法混合脱硫催化剂(简称MSO脱硫摧化剂),具有再生效率高,付反应小等显著优点,用于合成氨厂已取得良好效果。脱硫液中水杨酸含量的分析是一个迫切需要解决的问题。脱硫液成份复杂,除水杨酸外,还含有对苯二酚、苯醌、腐植酸类物质、硫氰酸铵及硫氢化铵等。使用通常的溴酸盐容量法、水杨酸铁比色法测定水杨酸,上述共存物质均有干扰,而排除这些物质的干扰又颇困难。
I. INTRODUCTION The newly found manganese sulfate-salicylic acid-hydroquinone wet-process desulfurization catalyst (abbreviated as MSO desulfurization catalyst) has the remarkable advantages of high regeneration efficiency, small reaction rate and the like and is used for ammonia plant Achieve good results. Analysis of salicylic acid content in desulfurization solution is an urgent problem to be solved. Desulfurization fluid composition is complex, in addition to salicylic acid, but also contains hydroquinone, benzoquinone, humic substances, ammonium thiocyanate and ammonium hydrogen sulfide. The usual bromate capacity method, salicylic acid iron colorimetric determination of salicylic acid, the coexistence of substances have interference, and ruled out the interference of these substances is quite difficult.