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Title: Liquefaction process wherein solvents derived from the material liquefied and containing increased concentrations of donor species are employed

Abstract

An improved process for the liquefaction of solid carbonaceous materials wherein a solvent or diluent derived from the solid carbonaceous material being liquefied is used to form a slurry of the solid carbonaceous material and wherein the solvent or diluent comprises from about 65 to about 85 wt. % hydroaromatic components. The solvent is prepared by first separating a solvent or diluent distillate fraction from the liquefaction product, subjecting this distillate fraction to hydrogenation and then extracting the naphthenic components from the hydrogenated product. The extracted naphthenic components are then dehydrogenated and hydrotreated to produce additional hydroaromatic components. These components are combined with the solvent or diluent distillate fraction. The solvent may also contain hydroaromatic constituents prepared by extracting naphthenic components from a heavy naphtha, dehydrogenating the same and then hydrotreating the dehydrogenated product. When the amount of solvent produced in this manner exceeds that required for steady state operation of the liquefaction process a portion of the solvent or diluent distillated fraction will be withdrawn as product.

Inventors:
 [1];  [2];  [3]
  1. (Kingwood, TX)
  2. (Baytown, TX)
  3. (Friendswood, TX)
Issue Date:
Research Org.:
Exxon Research and Engineering Co.
OSTI Identifier:
864106
Patent Number(s):
4311578
Assignee:
Exxon Research & Engineering Co. (Florham Park, NJ) OSTI
DOE Contract Number:  
EF-77-A-01-2893
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
liquefaction; process; solvents; derived; material; liquefied; containing; increased; concentrations; donor; species; employed; improved; solid; carbonaceous; materials; solvent; diluent; form; slurry; comprises; 65; 85; wt; hydroaromatic; components; prepared; separating; distillate; fraction; product; subjecting; hydrogenation; extracting; naphthenic; hydrogenated; extracted; dehydrogenated; hydrotreated; produce; additional; combined; contain; constituents; heavy; naphtha; dehydrogenating; hydrotreating; amount; produced; manner; exceeds; required; steady; operation; portion; distillated; withdrawn; improved process; carbonaceous materials; liquefaction process; carbonaceous material; solid carbonaceous; solid carbon; distillate fraction; produce additional; liquefaction product; increased concentration; increased concentrations; donor species; diluent derived; /208/

Citation Formats

Fant, B. T., Miller, John D., and Ryan, D. F. Liquefaction process wherein solvents derived from the material liquefied and containing increased concentrations of donor species are employed. United States: N. p., 1982. Web.
Fant, B. T., Miller, John D., & Ryan, D. F. Liquefaction process wherein solvents derived from the material liquefied and containing increased concentrations of donor species are employed. United States.
Fant, B. T., Miller, John D., and Ryan, D. F. Fri . "Liquefaction process wherein solvents derived from the material liquefied and containing increased concentrations of donor species are employed". United States. https://www.osti.gov/servlets/purl/864106.
@article{osti_864106,
title = {Liquefaction process wherein solvents derived from the material liquefied and containing increased concentrations of donor species are employed},
author = {Fant, B. T. and Miller, John D. and Ryan, D. F.},
abstractNote = {An improved process for the liquefaction of solid carbonaceous materials wherein a solvent or diluent derived from the solid carbonaceous material being liquefied is used to form a slurry of the solid carbonaceous material and wherein the solvent or diluent comprises from about 65 to about 85 wt. % hydroaromatic components. The solvent is prepared by first separating a solvent or diluent distillate fraction from the liquefaction product, subjecting this distillate fraction to hydrogenation and then extracting the naphthenic components from the hydrogenated product. The extracted naphthenic components are then dehydrogenated and hydrotreated to produce additional hydroaromatic components. These components are combined with the solvent or diluent distillate fraction. The solvent may also contain hydroaromatic constituents prepared by extracting naphthenic components from a heavy naphtha, dehydrogenating the same and then hydrotreating the dehydrogenated product. When the amount of solvent produced in this manner exceeds that required for steady state operation of the liquefaction process a portion of the solvent or diluent distillated fraction will be withdrawn as product.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

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