Process for separating clarified water from an aqueous dispersion of ash, slag and char particulate matter
In a process for reacting a feedstock comprising an ash-containing solid carbonaceous fuel selected from the group consisting of anthracite coal, bituminous coal, sub-bituminous coal, lignite, particulate carbon, coke from coal, petroleum coke, oil shale, tar sands, asphalt, pitch, and mixtures thereof with a free-oxygen containing gas in a free-flow partial oxidation gas generator to produce a hot raw effluent gas stream comprising H/sub 2/, CO, other gaseous material, and entrained particulate solids selected from the group consisting of ash, slag, char and mixtures thereof, and having a particle size in the range of about 2000 to about 37 microns this patent describes the improvement comprising: (1) cooling and scrubbing the hot raw effluent gas stream from the gas generator with water in a gas cooling and scrubbing zone; (2) mixing with the water dispersion of particulate solids and anionic surfactant comprising a sulfonated product of humic acids and their salts, and sufficient acid to provide the mixture with a pH in the range of about 2 to 6; (3) separating a clarified stream of water substantially free from the particulate solids in a solids-liquid separating zone, and concentrated aqueous dispersion of the particulate solids; and (4) recycling at least a portion of the clarified water to the gas cooling and scrubbing zone.
- Assignee:
- Texaco Inc., White Plains, NY
- Patent Number(s):
- US 4705537
- OSTI ID:
- 5911355
- Resource Relation:
- Patent File Date: Filed date 2 Dec 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stable aqueous suspension of partial oxidation ash, slag and char containing polyethoxylated quaternary ammonium salt surfactant
Partial oxidation of upgraded petroleum coke
Related Subjects
02 PETROLEUM
08 HYDROGEN
AQUEOUS SOLUTIONS
DEASHING
SEPARATION PROCESSES
HYDROGEN PRODUCTION
PARTICULATES
REMOVAL
ACIDIFICATION
ASPHALTS
CARBON
CARBON MONOXIDE
COAL
COAL FINES
COAL GASIFICATION
COKE
GASES
HUMIC ACIDS
HYDROGEN
OIL SANDS
OIL SHALES
PARTIAL OXIDATION PROCESSES
PETROLEUM PRODUCTS
PITCHES
SCRUBBING
SULFONATION
WATER
BITUMENS
BITUMINOUS MATERIALS
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASIFICATION
HYDROGEN COMPOUNDS
MATERIALS
MIXTURES
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
SOLUTIONS
TAR
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification
020400 - Petroleum- Processing
080102 - Hydrogen- Production- Thermochemical Processes