| Abstract: | Study of the corrosion processes at the primary oil refining by Mössbauer and X-ray investigation – I. Atmospheric distillation columns Samples from zones of intensive corrosion in distillation and stabilization columns of atmospheric crude oil distillation were studied by means of Mössbauer spectroscopy and X-ray diffraction. Qualitative and quantitative composition of the surface layers were established. They were found to consist of sulphides, sulphates, oxides and oxihydroxides of iron as well as sulphur. Sulphide, sulphate, and oxygen corrosion dominate. Secondary physicochemical and chemical transformations of the formed products have importance. The probable mechanism of the corrosion processes taking place is discussed. |
