from first principles PP-I-1

PP-IV-16Hydroisomerization of Catalytic Cracking Gasolineover Bifunctional CatalystMukhtarova G.S., Gasimova Z.A., Efendiyeva N.Kh., Huseynova R.I., Efendiyeva T.Kh.,Ibrahimov H.C.The Yu.H. Mamedaliyev Institute of Petrochemical Processes of NAS of Azerbaijan,Baku, Azerbaijangulermuxtarova@yahoo.comThe concept of oil-refining industry development envisages as primary goals an increase inextent of crude oil refining as well as a development of novel highly-efficient andecologically clean processes and technologies. Combination of solutions of tasks ondeepening oil refining and obtaining trade products meeting the requirements of modernstandards is possible at the expense of development and usage of novel methods of refining«secondary» fractions of catalytic cracking, visbcreaking and coking processes [1, 2].With the purpose of upgrading the quality of catalytic cracking gasolines their hydrotreatmentwas carried out in the presence of bifunctional catalyst. The studies were conducted at theflow type laboratory installation having stationary catalytic system Al-Co-Mo / Ni-Al-Si atthe ratio 1:1 – 1:5 with the catalyst layer of the volume 200 ml under optimal conditions(temperature 360 o C, pressure 4 MPa, bulk velocity of feed-stock delivery 1.0 h -1 and volumeratio hydrogen : feed-stock 1500 l/l).As a result of the performed researches it was established that upon complete hydrogenationof unsaturated hydrocarbons of normal and isostructure with an aid of hydrogenating layer(the ratio Al-Co-Mo / Ni-Al-Si = 1:1) not only the process of hydrocracking catalystdeactivation but also the process of formation of carbonium-ions (in their generationunsaturated hydrocarbons take part) becomes inhibited which is a accompanied by the processrate decrease. The octane number of the gasoline produced in the process of destructivehydroisomerization of catalytic cracking gasoline under these conditions makes 76 pointsagainst 82 points, obtained at the ration of the catalyst components 1:5. The content ofaromatic hydrocarbons equals 28 % against 20 % wt whereas the yield of the isocomponentmakes 41.8 % against 28.5 % wt. At the same time the produced gasoline has the octanenumber according to the motor method 82 points against 76 points.Thus, it is expedient to carry out the destructive hydroisomerization of the catalytic crackinggasoline fraction at the ratio of the catalyst components Al-Co-Mo / Ni-Al-Si = 1:5. In this300