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

Patent · Tue Jan 01 04:00:00 EST 1980

OSTI ID:863666

Duncan, Dennis A ^[1]

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1. Downers Grove, IL

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.

• Research Organization: Institute of Gas Technology
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4225414
• OSTI ID: 863666
• Country of Publication: United States
• Language: English

Related Subjects

/999/208/585/
achieved
adjusting
alkyl
alkylation reaction
altering
appreciably
aromatic
aromatic hydrocarbon
aromatic hydrocarbons
aromatics
below
benzene
carbonaceous
carbonaceous material
changing
chemical
chemical feed
coal
concentration
concentrations
constant
corresponding
cresols
dealkylation
dehydroxylation
desired
desired material
disclosed
employed
enhanced
ethylbenzene
feed
feed stock
final
followed
fuels
heating
heating rate
hydrocarbons
hydrocracking
hydrocracking carbonaceous
hydroxyl
immediate
imposing
including
increased
kinetic
maintaining
material
materials
maximum
maximum temperature
near
occur
phenol
phenols
process
produce
produce desired
produce various
produced
profile
provide
quenching
rate
rate followed
reaction
reactions
reduced
relative
relative concentration
relative concentrations
severity
similarly
stock
stocks
temperature
temperature profile
toluene
variable
variations
various
xylene
xylenes