Compositions comprising coal, water and polyelectrolyte

Patent · Tue Aug 20 00:00:00 EDT 1985

OSTI ID:6320148

Hansen, B V; Kalfue, S S; Mollberg, H R

This invention relates to compositions substantially containing pulverized coal, water, polyelectrolyte and, optionally, a stabilizing agent. The polyelectrolyte is a water soluble polyethylene, optionally containing double bonds and/or branching points in the polymer chain, being directly substituted with (a) hydroxysulfonyloxy groups or (b) sulfo groups, (c) hydroxysulfonyloxy-lower alkyl groups which are partly or completely in salt form and optionally (d) substituents selected from hydroxy, lower alkyl, lower alkanoyloxy, carbamoyl, cyano, hydroxymethyl, chloro and phenyl, whereby the polyelectrolyte contains at most four different kinds of said optional substituents, and wherein the amount of sulfur of the polyelectrolyte is 2 to 25 percent by weight being calculated when the acid forming groups are present as free acids. Small amounts of these polyelectrolytes in water with a high percentage of pulverized coal form compositions, characterized by low viscosity, good flowability, pumpability and stability.

• Assignee: AB Carbogel, Sweden
• Patent Number(s): US 4536187
• OSTI ID: 6320148
• Resource Relation: Patent Priority Date: Priority date 13 Sep 1982, Sweden; Other Information: PAT-APPL-495355
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
FUEL SLURRIES
CHEMICAL PREPARATION
STABILIZATION
ADDITIVES
CHEMICAL BONDS
CHEMICAL COMPOSITION
COAL FINES
COAL PREPARATION
ELECTROLYTES
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
POLYETHYLENES
POLYMERS
REAGENTS
SALTS
SOLUBILITY
SULFUR COMPOUNDS
VISCOSITY
DISPERSIONS
FUELS
MIXTURES
ORGANIC POLYMERS
POLYOLEFINS
SLURRIES
SUSPENSIONS
SYNTHESIS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage