Slurry composition of solid fuel

Claim 2

A slurry composition, comprising: (a) from 50 to 90% by weight of a powdered solid fuel in said slurry, (2) water, and (3) from 0.01 to 10% by weight of a dispersing agent consisting of a compound or polymer having in its molecular structure a tricyclodecane or tricyclodecene skeleton and a sulfonic acid group attached to the skeleton.

Claim 3

The slurry composition according to claim 1, wherein the solid fuel powder is pulverized coal, petroleum coke or pitch.

Claim 4

The slurry composition according to claim 1 or 2, wherein the dispersing agent is (1) a sulfonation product of a polymer of a compound represented by formula (A) ##STR23## or formula (B) ##STR24## wherein R 1 , R 2 and R 3 are independently hydrogen atoms or alkyl groups having 1 to 3 carbon atoms; or a copolymer of compounds represented by formula (A) or (B); or (2) a sulfonation product of a reaction product of a compound represented by formula (C) ##STR25## in which R 4 and R 5 are independently hydrogen atoms or alkyl groups having 1 to 3 carbon atoms with a compound represented by formula (A) or (B) or a reaction product of a compound represented by formula (C) with a compound represented by formula (A) and a compound represented by formula (B), or a condensate of the sulfonation product (2).

Claim 5

The slurry composition according to claim 1 or 2, wherein the dispersing agent is a compound represented by the formula: ##STR26## wherein R 2 and R 3 are independently hydrogen atoms or alkyl groups having 1 to 3 carbon atoms; X and Y are hydrogen, alkyl or --SO 3 , at least one of X and Y being --SO 3 ; n is 1 or 2; and M is hydrogen, an alkali metal, an alkaline earth metal, an ammonium group or a hydrocarbylammonium group, or a condensate of said compound.

Claim 6

The slurry composition according to claim 1 or 2, wherein the dispersing agent is a polymer or copolymer of a compound represented by the formula: ##STR27## wherein R 2 , R 3 , n and M are the same as defined in claim 4, or a polymer or copolymer of a compound represented by the formula: ##STR28## wherein R 2 , R 3 , X, Y, M and n are the same as defined in claim 4.

Claim 7

The slurry composition according to claim 1 or 2, wherein the dispersing agent is at least one member selected from the group consisting of: (1) a sulfonation product of a polymer or a copolymer or a mixture thereof obtained by polymerizing cyclopentadiene or its derivative or derivatives represented by the formula: ##STR29## wherein R 1 is a hydrogen atom or an alkyl group having 1-3 carbon atoms, or cyclopentadiene or its derivative or derivatives represented by the formula: ##STR30## wherein R 2 and R 3 , which may be the same or different, are hydrogen atoms or alkyl groups having 1-3 carbon atoms; (2) a sulfonation product obtained by sulfonating a reaction product mixture which is obtained by reacting cyclopentadiene or its derivative or derivatives represented by the formula (a) or dicyclopentadiene or its derivative or derivatives represented by the formula (b) with a compound represented by the formula: ##STR31## wherein R 4 and R 5 , which may be the same or different, are hydrogen atoms or alkyl groups having 1-6 carbon atoms, or a condensate of said sulfonation product; (3) a condensate obtained by condensing a sulfonated cyclopentadiene derivative represented by the formula: ##STR32## wherein R 6 , R 7 and R 8 , which may be the same or different, are hydrogen atoms or alkyl groups having 1-6 carbon atoms, R 9 and R 10 , which may be the same or different, are hydrogen atoms or alkyl groups having 1-3 carbon atoms, n is 1 or 2, and M is a hydrogen atom, an alkali metal, an alkaline earth metal, an ammonium group or a hydrocarbylammonium group; (4) a polymer or copolymer of a sulfonated dicyclopentadiene represented by the formula: ##STR33## wherein R 2 , R 3 , n and M are the same as defined above; (5) a polymer or copolymer of a sulfonated hydroxydicyclopentadiene represented by the formula: ##STR34## wherein R 2 , R 3 , n and M are the same as defined above; and (6) a condensate obtained by the condensation of a disulfonation product of a dicyclopentadiene derivative represented by the formula: ##STR35## wherein R 11 and R 12 , which may be the same or different, are hydrogen atoms or alkyl groups having 1-2 carbon atoms, and R 2 , R 3 , M and n are the same as defined above.

Claim 8

The slurry composition according to claim 1, wherein the dispersing agent is a polymer or a copolymer of a sulfonated dicyclopentadiene represented by the formula: ##STR36## wherein R 2 and R 3 are independently hydrogen atoms or alkyl groups having 1 to 3 carbon atoms; M is a hydrogen atom, an alkali metal, an alkaline earth metal, an ammonium group or a hydrocarbylammonium group; and n is 1 or 2.

Claim 9

The slurry composition according to claim 1, wherein the solid fuel content in the slurry is 60 to 85% by weight.

Claim 10

The slurry composition according to claim 1, wherein the dispersing agent content in the slurry is 0.05 to 1% by weight.