| abstract |
The invention discloses a method for measuring the content of soluble hydrogen sulfide in desulfurization liquid. The technical solution disclosed in the present invention uses the redox method to cooperate with an automatic potentiometric titrator for titration, but uses two different processes to measure the hydrogen sulfide content for the lean amine solution and the rich amine solution. The lean amine solution is divided into sampling, titration, In the blank control step, the rich amine solution is divided into sample pretreatment, sampling and sample preparation, titration, and blank control steps. The invention provides a new method for measuring the content of soluble hydrogen sulfide in desulfurization liquid; using sodium thiosulfate standard solution as the standard solution for titration, the titration cost is reduced; by introducing an automatic titrator, the titration end point is accurate; The titration analysis results of this method have good stability and reproducibility. |