Coal-water slurry viscosity reduction using olefin/maleic acid salt copolymers

Patent · Mon Apr 09 23:00:00 EST 1984

OSTI ID:6167873

Matt, J; Ferrara, J M

An improved coal-water slurry of the type comprising at least 45% by weight of finely divided coal particles and a dispersing agent, said slurry being characterized as having a Brookfield viscosity at 60 rpm of less than 4,000 centipoise, the improvement which comprises adjusting the pH of said slurry to at least 6 and using as the dispersing agent, a water-soluble salt of an olefin/maleic acid copolymer having a molecular weight within the range of about between 3,000-50,000.

• Assignee: Nalco Chemical Company
• Patent Number(s): US 4441888
• OSTI ID: 6167873
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ALKENES
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COPOLYMERS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUEL SLURRIES
FUELS
HYDROCARBONS
HYDROXY ACIDS
MALIC ACID
MATERIALS
MIXTURES
MOLECULAR WEIGHT
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PH VALUE
POLYMERS
REDUCING AGENTS
REDUCTION
SALTS
SLURRIES
SOLUBILITY
SURFACTANTS
SUSPENSIONS
VISCOSITY