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Title: Step-wise supercritical extraction of carbonaceous residua

Abstract

A method of fractionating a mixture containing high boiling carbonaceous material and normally solid mineral matter includes processing with a plurality of different supercritical solvents. The mixture is treated with a first solvent of high critical temperature and solvent capacity to extract a large fraction as solute. The solute is released as liquid from solvent and successively treated with other supercritical solvents of different critical values to extract fractions of differing properties. Fractionation can be supplemented by solute reflux over a temperature gradient, pressure let down in steps and extractions at varying temperature and pressure values.

Inventors:
 [1]
  1. Venetia, PA
Issue Date:
Research Org.:
USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
OSTI Identifier:
866289
Patent Number(s):
4675101
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
step-wise; supercritical; extraction; carbonaceous; residua; method; fractionating; mixture; containing; boiling; material; normally; solid; mineral; matter; processing; plurality; solvents; treated; solvent; critical; temperature; capacity; extract; fraction; solute; released; liquid; successively; values; fractions; differing; properties; fractionation; supplemented; reflux; gradient; pressure; steps; extractions; varying; mineral matter; supercritical extraction; temperature gradient; critical temperature; mixture containing; carbonaceous material; normally solid; solid mineral; pressure value; supercritical solvent; pressure values; critical solvent; critical value; /208/

Citation Formats

Warzinski, Robert P. Step-wise supercritical extraction of carbonaceous residua. United States: N. p., 1987. Web.
Warzinski, Robert P. Step-wise supercritical extraction of carbonaceous residua. United States.
Warzinski, Robert P. Thu . "Step-wise supercritical extraction of carbonaceous residua". United States. https://www.osti.gov/servlets/purl/866289.
@article{osti_866289,
title = {Step-wise supercritical extraction of carbonaceous residua},
author = {Warzinski, Robert P},
abstractNote = {A method of fractionating a mixture containing high boiling carbonaceous material and normally solid mineral matter includes processing with a plurality of different supercritical solvents. The mixture is treated with a first solvent of high critical temperature and solvent capacity to extract a large fraction as solute. The solute is released as liquid from solvent and successively treated with other supercritical solvents of different critical values to extract fractions of differing properties. Fractionation can be supplemented by solute reflux over a temperature gradient, pressure let down in steps and extractions at varying temperature and pressure values.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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