PHYSICOCHEMICAL PROPERTIES OF CHOBANDAG SHALE AND THE USE OF PRODUCTS OBTAINED FROM ITS THERMAL DESTRUCTION

Abstract

In this work, the physicochemical properties of Chobandag shale were studied and its thermal cracking was carried out. Fisher's analysis showed that the shale contained 23% organic matter, 21.94% kerogen, and 3.31% sulfur content. The density of shale is 2.31 g/cm3. The IR spectrum of shale showed a significant number of aromatic rings, the presence of side chains, and carbonyl-carboxyl groups. The shale was subjected to thermal cracking, where the temperature varied from 500 to 650°C. The content of hydrogen sulfide gas (H2S) was 11.9%. We passed the gas over a catalyst prepared using German technology and obtained 76.2% of thiophene and 7.5% of its homologues. The yield of liquid products was 18.4%. We propose to use light resin (up to 200 °C) to isolate thiophene-aromatic concentrate, and heavy resin to obtain oxidized road bitumen.