Dewatering of solid residues of carbonaceous materials

Patent · Tue Apr 06 00:00:00 EST 1982

OSTI ID:5149912

Campen, D C; Crosby, A C

A process is claimed for removal of water from a mixture of water and certain solid residues of carbonaceous material, such as a coal charwater slurry. The process comprises: mixing the slurry with an acid, preferably hydrochloric acid, a surfactant, preferably water immiscible such as lecithin, and an organic compound such as a liquid hydrocarbon, e.g., mineral spirits; causing the char to agglomerate, and thereby facilitating separation of the char from the mixture, as by screening; and filtering or centrifuging.

• Assignee: Occidental Research Corp
• Patent Number(s): US 4323365
• OSTI ID: 5149912
• Resource Relation: Patent File Date: Filed date 28 Jul 1980; Other Information: PAT-APPL-172736
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
FUEL SLURRIES
WATER REMOVAL
AGGLOMERATION
AQUEOUS SOLUTIONS
CHARS
COAL
COKE BREEZE
FILTRATION
HYDROCHLORIC ACID
LECITHINS
MIXTURES
SEPARATION PROCESSES
SOLVENTS
SURFACTANTS
CARBONACEOUS MATERIALS
COKE
DISPERSIONS
ENERGY SOURCES
ESTERS
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LIPIDS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHOLIPIDS
PYROLYSIS PRODUCTS
REMOVAL
SLURRIES
SOLUTIONS
SUSPENSIONS
010800* - Coal
Lignite
& Peat- Waste Management
013000 - Coal
Lignite
& Peat- Transport
Handling
& Storage