OZONATION OF MUNAILY MOLA NATURAL BITUMEN
The results of studies of the interaction of ozone-oxygen mixture in a bubbling type reactor with natural bitumen of the Munaily Mola deposit are presented. Experiments on treatment of ozone-oxygen mixture of natural bitumen are carried out and optimum conditions of ozonation are set. Maximum possible amount of ozone that is able to enter into chemical interaction with the bitumen is identified. The analysis of the products of ozonation and cracking of ozonated bitumen is carried out. The dependences of the chemical composition and properties of the «synthetic oil» samples from bitumen processing conditions of an ozone-oxygen mixture and subsequent cracking are identified. Directions of transformation of oxygen-containing structures in the ozonation of natural bitumen are identified. Changes of physical and chemical parameters of the ozonation products are established. It is found that pretreatment Munaily Mola bitumen ozone (6 g/kg of bitumen), followed by cracking results in a substantial reduction of coke formation, obtaining significant quantities of liquid cracking products (over 97 %) with a lower resin content (20,5 mass %). Studies have shown the fundamental possibility of oxidation of natural bitumen ozone with increasing amounts of resinasphaltene compounds by condensation of these compounds and the products that are similar in properties to the road bitumen.