A catalytic cracking process on atmospheric residue from the Al-Diwaneyah petroleum refinery

The Reduced Crude Residue R.C.R it’s a product of atmosphere distillation from crude oil in the Al-Diwaneyah refinery, where lower tower at 300 °C thein atmospheric unit. For Production Light Petroleum fractions by Cracking Reaction. Catalytic cracking reduced residue (R.C.R) was joined with riser pressure continuous reactor completed an autoclave different process selection, temperature about 350–450 °C, catalytic time (60–120) minute, dosage catalyst (0.1-0.5) gm and 1–5 bar existence Nitrogen. Statistical program design testing (RSM) Box-Behnken (BB) employed to predict selection necessary changes (R.C.R), gain better conditions. Depended on (3) plane for factorial, cubist system progressing between conditions overall production, more influential operator all responses selected. prophecy yields conversion upgrade liquid phase, gas coke, were found agree satisfactory grade. At 400 1 bar, 0.3 gm, longer residence (2 h) best experiment is get maximum yield phase product. run quality when 5 0.5 90 minutes as running depended API, sp. gr, density, viscosity, flash point.