SYNTHESIS AND INDUSTRIAL APPLICATION OF PROTECTIVE LAYER CATALYSTS BASED ON KAOLIN FOR HYDROCLEAN INSTALLATIONS

Abstract

: The dynamics of the accelerated formation of corrosion products of equipment in the process of obtaining diesel and oil fractions from sour oil with a high concentration of resinous asphaltic substances and derivatives of petroleum acids are investigated in this work. The following experimental data is obtained: the genesis of the phase composition during the synthesis of granules of the protective layer from kaolin phosphate mass, followed by their modification with Ni 2+ ions in order to control the surface acidity and the hydrogenating function focused on the conversion of reactive alkenes. The mechanism and conditions for the formation of samples of catalysts of the protective layer of the core type containing the weight of 2.5%, are discussed. NiO in the surface layer, and 5 times less in the inner part of the granules which consist of particles of clay mineral cemented Al (H 2 PO 4 ) 2 , as well as other products of dissolution of kaolinite and hydromica with phosphoric acid, are also studied. The results of the study of the efficiency of removal of corrosive iron and impurity elements of petroleum origin in granules of the developed protective layer are presented. It has been established that the use of granules of a protective layer in optimal shape and size, together with a reduced tendency to form a solid crust of sediments, limited the increase in pressure drop on the layer of CoMo catalyst of hydrofining oil distillates and the deasphalted vacuum residue of high-sulfur tarry oil.