초록 ▼

The invention is a process for making anode grade coke which comprises solvent deasphalting a residue feedstock to obtain an essentially asphaltene-free, resin-containing stream and coking the resin-containing stream in a delayed coker to make anode coke. The solvent deasphalting can make a deasphal

The invention is a process for making anode grade coke which comprises solvent deasphalting a residue feedstock to obtain an essentially asphaltene-free, resin-containing stream and coking the resin-containing stream in a delayed coker to make anode coke. The solvent deasphalting can make a deasphalted oil stream containing resin or separate deasphalted oil and resin streams. There can be hydrotreating of (1) a minor portion of the residue feedstock wherein the hydrotreated residue is fed to the delayed coker with the resin-containing stream, (2) the resin-containing stream wherein the hydrotreated resin stream is fed to the delayed coker, or (3) a major portion of the residue feedstock wherein the hydrotreated residue is fed to the solvent deasphalting unit.

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for preparing anode grade coke from a petroleum residue feedstock containing sulfur and metal contaminants and essentially free of hydrotreated material, comprising:solvent deasphalting the residue feedstock to produce a deasphalted oil stream, a resin stream

[ What is claimed is:] [1.]1. A process for preparing anode grade coke from a petroleum residue feedstock containing sulfur and metal contaminants and essentially free of hydrotreated material, comprising:solvent deasphalting the residue feedstock to produce a deasphalted oil stream, a resin stream essentially free of asphaltenes and an asphaltene-rich stream;feeding a process stream comprising the resin stream and essentially free of hydrotreated material directly to a delayed coker;heating the process stream in the delayed coker under delayed coking conditions to form a batch of the anode grade coke.