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Title: Process for hydrocracking carbonaceous material to provide fuels or chemical feed stock

Abstract

A process is disclosed for hydrocracking coal or other carbonaceous material to produce various aromatic hydrocarbons including benzene, toluene, xylene, ethylbenzene, phenol and cresols in variable relative concentrations while maintaining a near constant maximum temperature. Variations in relative aromatic concentrations are achieved by changing the kinetic severity of the hydrocracking reaction by altering the temperature profile up to and quenching from the final hydrocracking temperature. The relative concentration of benzene to the alkyl and hydroxyl aromatics is increased by imposing increased kinetic severity above that corresponding to constant heating rate followed by immediate quenching at about the same rate to below the temperature at which dehydroxylation and dealkylation reactions appreciably occur. Similarly phenols, cresols and xylenes are produced in enhanced concentrations by adjusting the temperature profile to provide a reduced kinetic severity relative to that employed when high benzene concentrations are desired. These variations in concentrations can be used to produce desired materials for chemical feed stocks or for fuels.

Inventors:
 [1]
  1. (Downers Grove, IL)
Issue Date:
Research Org.:
Institute of Gas Technology
OSTI Identifier:
863666
Patent Number(s):
4225414
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
EX-76-C-01-2307
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; hydrocracking; carbonaceous; material; provide; fuels; chemical; feed; stock; disclosed; coal; produce; various; aromatic; hydrocarbons; including; benzene; toluene; xylene; ethylbenzene; phenol; cresols; variable; relative; concentrations; maintaining; near; constant; maximum; temperature; variations; achieved; changing; kinetic; severity; reaction; altering; profile; quenching; final; concentration; alkyl; hydroxyl; aromatics; increased; imposing; corresponding; heating; rate; followed; immediate; below; dehydroxylation; dealkylation; reactions; appreciably; occur; similarly; phenols; xylenes; produced; enhanced; adjusting; reduced; employed; desired; materials; stocks; heating rate; aromatic hydrocarbons; desired material; temperature profile; carbonaceous material; maximum temperature; aromatic hydrocarbon; relative concentrations; chemical feed; relative concentration; feed stock; produce desired; hydrocracking carbonaceous; alkylation reaction; rate followed; produce various; /999/208/585/

Citation Formats

Duncan, Dennis A. Process for hydrocracking carbonaceous material to provide fuels or chemical feed stock. United States: N. p., 1980. Web.
Duncan, Dennis A. Process for hydrocracking carbonaceous material to provide fuels or chemical feed stock. United States.
Duncan, Dennis A. Tue . "Process for hydrocracking carbonaceous material to provide fuels or chemical feed stock". United States. https://www.osti.gov/servlets/purl/863666.
@article{osti_863666,
title = {Process for hydrocracking carbonaceous material to provide fuels or chemical feed stock},
author = {Duncan, Dennis A.},
abstractNote = {A process is disclosed for hydrocracking coal or other carbonaceous material to produce various aromatic hydrocarbons including benzene, toluene, xylene, ethylbenzene, phenol and cresols in variable relative concentrations while maintaining a near constant maximum temperature. Variations in relative aromatic concentrations are achieved by changing the kinetic severity of the hydrocracking reaction by altering the temperature profile up to and quenching from the final hydrocracking temperature. The relative concentration of benzene to the alkyl and hydroxyl aromatics is increased by imposing increased kinetic severity above that corresponding to constant heating rate followed by immediate quenching at about the same rate to below the temperature at which dehydroxylation and dealkylation reactions appreciably occur. Similarly phenols, cresols and xylenes are produced in enhanced concentrations by adjusting the temperature profile to provide a reduced kinetic severity relative to that employed when high benzene concentrations are desired. These variations in concentrations can be used to produce desired materials for chemical feed stocks or for fuels.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Patent:

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