Applying H2 S/SO2 ratio analyzer in sulfur recovery unit can improve coefficient of sulphur recovery effectively and reduce SO 2 discharge , and it was also helpful to implement energy saving and emission reduction for environment protection purpose.The significance of the ratio analyzer was emphasized through describing the principle of sulphur recovery process , and the principle and application of the analyzer 880NSL were also introduced.%在硫磺回收装置中设置硫比值分析仪可有效提高硫回收率，降低SO2排放量，同时也可以达到节能减排、保护环境的目的。本文阐述了比值分析仪在硫磺回收工艺中的重要性，同时介绍了880NSL型比值分析仪的原理和在某硫磺回收装置的应用。
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