Development of an Analyzer Giving the Amounts of Sulfur Compounds Emitted by a Crude Oil Heated to Different Temperatures.

An analyzer is developed to determine the content of volatile sulfur compounds in crude oil and petroleum products. The determination is based on transforming these compounds into sulfur dioxide and the coulometric titration of the latter with potentiometric detection of the equivalent point. The apparatus makes possible the quantitative determination of sulfur compounds evolved by the crude oil when heated to 100-400 degree C. Such measurement makes it possible to predict the crackability of sulfur derivatives in crude oils which can cause pollution of certain cuts and corrosion in atmospheric distillation columns.