This FTIR cell is an HSA automatic sampling system designed for the analysis of Liquid Sulfur and the detection of H2S and H2Sx.
The process of refining oil and petroleum, or the purification of acidic fases, as a result gives H2S production. At industrial level, degassing processes involve the treatment of liquid sulfur with air or steam. Some processes add catalyst to make the decomposition of H2Sx faster. For example, H2S oxidizes and turns into elemental sulfur (S8) through combination of oxidation (water, SO2 and S8). These processes are called Processes of Claus and include a myriad of chemical reactions. The air degassing process achieves the complete removal of H2S/H2Sx traces through the elimination of dissolved H2S with chemical oxidation of this compounds in elemental sulfur and SO2.
Even the process seems to be easy and well known, achieving the complete removal of H2S and H2Sx traces through the elimination of them is not an operation with certain data, it is necessary to check degassed liquid sulfur with the analysis of the samples. The determination and measurement of H2S in liquid sulfur is complicated, it exists in two different ways in equilibrium with elemental sulfur (S8): dissolved gas (H2S) and dissolved polymer (H2Sx), for this reason the cell is heated and allows to analyze the purity of Sulfur. The quantity of each element is dependent on the temperature of the sulfur itself.