Research Of Heavy Oil's Decarbonizing Integrated Technology

The experiment uses visbreaking, solvent deasphalting and integrated technology to process residue respectively, and by analyzing products properties, it tries to find out the effect of visbreaking temperature and DAO yield on the products properties of decarbonizing integrated technology.The result shows that visbreaking can effectively upgrade the residue properties,decarbonizing integrated technology increases the content of saturate and aromatic which contributes to pyrolysis reaction increases, especially the content of saturate increases markedly, while the content of resin and asphaltene which contributes to polymerization reaction decreases markedly Compared to solvent deasphalting, decarbonizing integrated technology has many advantages with higher DAO yield, higher general light oil yield, higher profits and higher removing rate of heavy metals(Ni+ V).Besides, the viscosity of DAO decreases markedly; DOA is of higher softening point and carbon residue.At last, the paper gives the best processing plan for A# residue: A# residue is fed into visbreaking to produce visbreaking oil, then the visbreaking oil is distilled to remove gasoline and finally the visbreaking oil is fed into solvent deasphlting to get DAO and DOA. The operating condition for the best processing plan of A# residue includes: the visbreaking temperature is 410℃; the residence time is 60 min; the pressure of solvent deasphalting is 4.3 Map; the proportion between solvent and residue is 3.5; the operating temperature is 107℃(top), 112℃(median), 117℃(bottom).