Aqueous slurries of solid carbonaceous fuel

Patent · Tue Nov 18 04:00:00 EST 1986

OSTI ID:6914160

Yaghmaie, F; Vasconcellos, S R; McKeon, R J

This patent describes a solid carbonaceous fuel-water slurry which comprises: (1) about 50 to 70 weight % of comminuted solid carbonaceous fuel; (2) about 0.5 to 8.0 weight % of a water-soluble surfactant derived from a suspension of low rank coal and coal derived creosote oil which is prepared as follows: (a) mixing comminuted low rank coal feed having a combined oxygen content in the range of about 5.0 to 35.0 weight %, or more and a particle size of less than 1180 microns with coal-derived creosote oil having a specific gravity in the range of about 1.030-1.080 and having an atmospheric boiling point in the range of about 200/sup 0/-300/sup 0/C. to produce a suspension having a solids content of about 20 to 60 weight %; (b) sulfonating the suspension of low rank coal and coal-derived creosote oil from (a) at a temperature in the range of about 100/sup 0/ to 125/sup 0/C. until at least about 85 weight % of the suspension of low rank coal and coal-derived creosote oil is converted; and (c) cooling the sulfonated mixture from (b) to room temperature and neutralizing to a pH in the range of about 6.5-7.5 to produce the surfactant; and (3) water, comprising the remainder of the solid carbonaceous fuel-water slurry. A process is described for producing a coal-water slurry feedstock to a partial oxidation gas generator.

• Assignee: Texaco, Inc., White Plains, NY
• Patent Number(s): US 4623359
• OSTI ID: 6914160
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
BOILING POINTS
CARBONACEOUS MATERIALS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COAL
COAL PREPARATION
COAL RANK
COMMINUTION
CREOSOTE
DENSITY
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL SLURRIES
FUEL SYSTEMS
FUELS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
MATERIALS
MEDIUM TEMPERATURE
MIXING
MIXTURES
NONMETALS
OXIDATION
OXYGEN
OXYGEN COMPOUNDS
PARTIAL OXIDATION PROCESSES
PARTICLE SIZE
PH VALUE
PHYSICAL PROPERTIES
QUANTITY RATIO
SIZE
SLURRIES
SULFONATION
SURFACTANTS
SUSPENSIONS
SYNTHESIS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WATER