Method for fast estimation of distillation residues and coke characteristics

摘要

The present invention relates to a method of estimating, for a petroleum feedstock, values representative of the sulfur and carbon distributions in atmospheric and vacuum distillation residues, and a value representative of the sulfur content in coke. According to the method, the following stages are carried out:
from a feedstock sample, measuring at least the Rock-Eval parameters S2b, SulfS2b, RC, Sulfoxy using a Rock-Eval device comprising a sulfur measurement module,deducing from the measurements of these Rock-Eval parameters the values of the sulfur and carbon distributions (SPHF, SCOKE, CPHF, CCOKE) in the distillation residues, and a sulfur content in relation to the carbon content in the coke.

主权项

1. A method of estimating, for crude oil, values representative of the distribution of sulfur and carbon in atmospheric and vacuum distillation residues, and a value representative of the sulfur in the coke, a method wherein the following stages are carried out:
from a crude oil sample, measuring at least parameters S2b, SulfS2b, RC, Sulfoxy using a device comprising at least one oven for pyrolysis in an inert atmosphere and at least one oxidation oven, said device comprising a sulfur measurement module, S2b being the mass proportion of heavy pyrolyzable compounds contained in said sample, SulfS2b being the mass proportion of sulfur in the heavy pyrolyzable compounds contained in said sample, RC being the mass proportion of carbon of the pyrolysis residue of said sample, and Sulfoxy being the mass proportion of sulfur in the pyrolysis residue of said sample, deducing from said measurements of said parameters said values of the sulfur and carbon distributions in the distillation residues, and a sulfur content in relation to the carbon content in the coke.