Process for conversion of residue employing de-asphalting and delayed coking

An integrated coking and solvent de-asphalting process, the process comprising:

• (a) introducing a feedstock [1] near to bottom of a fractionator column [2] to obtain a mixed feed [3] drawn out from the bottom of the fractionator column;
• (b) contacting the mixed feed [3] with a solvent [5] in a extractor [4] to obtain a pitch stream [6] containing asphaltenic fraction and predominantly a paraffinic stream [10] containing a de-asphalted oil and the solvent;
• (c) passing the pitch stream [6] to a pitch solvent stripper [7] to obtain a residual pitch stream [8] and the solvent;
• (d) heating the residual pitch stream [8] in a furnace [16] to a coking temperature to obtain a hot pitch stream [17];
• (e) transferring the hot pitch stream [17] to one of a plurality of coke drums [18, 19] where it undergoes thermal cracking reaction to obtain hydrocarbon vapours [20] and coke;
• (f) passing the hydrocarbon vapours [20] to the fractionator column [2] to obtain product fraction.