JPS5657889A - Dispersing agent for coal-water slurry - Google Patents

Dispersing agent for coal-water slurry

Info

Publication number
JPS5657889A
JPS5657889A JP13388879A JP13388879A JPS5657889A JP S5657889 A JPS5657889 A JP S5657889A JP 13388879 A JP13388879 A JP 13388879A JP 13388879 A JP13388879 A JP 13388879A JP S5657889 A JPS5657889 A JP S5657889A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
coal
dispersing agent
copolymer
water slurry
un
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13388879A
Other versions
JPS6252790B2 (en )
Inventor
Noboru Moriyama
Shinichi Watanabe
Masaaki Yamamura
Original Assignee
Kao Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To prepare the titled dispersing agent giving a coal-water slurry having high dispersion stability and excellent deashing characteristics, by using a copolymer having a specific structure as an effective component.
CONSTITUTION: The objective copolymer of formula [R1WR4 are H, 1W22C alkyl, or phenyl, provided that the total number of the carbon atoms is ≤22; X and Y are OM, NR5R6 or OR7 [M is H, alkali metal, alkaline earth metal, ammonium or amine; R5 and R6 are H, 1W22C (un)saturated alkyl, hydroxyalkyl, or aryl, provided that the sum of the carbon atoms of R5 and R6 is ≤22; R7 is 1W30C (un)saturated alkyl, aryl or polyoxyethylene]; n is degree of polymerization] and having an average molecular weight of 1,000W50,000, is obtained by copolymerizing maleic anhydride with a monoolefin, hydrolyzing the copolymer, and subjecting the product to the salt-forming reaction. The amount of the dispersing agent to be added to a coal-water slurry is pref. 0.5W1wt%.
COPYRIGHT: (C)1981,JPO&Japio
JP13388879A 1979-10-17 1979-10-17 Expired JPS6252790B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13388879A JPS6252790B2 (en) 1979-10-17 1979-10-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13388879A JPS6252790B2 (en) 1979-10-17 1979-10-17

Publications (2)

Publication Number Publication Date
JPS5657889A true true JPS5657889A (en) 1981-05-20
JPS6252790B2 JPS6252790B2 (en) 1987-11-06

Family

ID=15115435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13388879A Expired JPS6252790B2 (en) 1979-10-17 1979-10-17

Country Status (1)

Country Link
JP (1) JPS6252790B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116989A (en) * 1984-07-03 1986-01-24 Nippon Oil & Fats Co Ltd Additive for slurry of solid fuel and water

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408293A (en) * 1966-04-11 1968-10-29 Nalco Chemical Co Coal slurry clarification
US3524682A (en) * 1962-03-07 1970-08-18 American Cyanamid Co Coal suspension pumping using polyelectrolytes
US4094810A (en) * 1976-06-01 1978-06-13 Kerr-Mcgee Corporation Aqueous slurry of ash concentrate composition and process for producing same
JPS5416511A (en) * 1977-05-31 1979-02-07 Scaniainventor Ab Composite containing crushed refined substances* water and dispersing agent and production of said composite
JPS6252791A (en) * 1985-08-31 1987-03-07 Miyazaki Oki Denki Kk Multiplex circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524682A (en) * 1962-03-07 1970-08-18 American Cyanamid Co Coal suspension pumping using polyelectrolytes
US3408293A (en) * 1966-04-11 1968-10-29 Nalco Chemical Co Coal slurry clarification
US4094810A (en) * 1976-06-01 1978-06-13 Kerr-Mcgee Corporation Aqueous slurry of ash concentrate composition and process for producing same
JPS5416511A (en) * 1977-05-31 1979-02-07 Scaniainventor Ab Composite containing crushed refined substances* water and dispersing agent and production of said composite
JPS6252791A (en) * 1985-08-31 1987-03-07 Miyazaki Oki Denki Kk Multiplex circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116989A (en) * 1984-07-03 1986-01-24 Nippon Oil & Fats Co Ltd Additive for slurry of solid fuel and water
JPH0259198B2 (en) * 1984-07-03 1990-12-11 Nippon Oils & Fats Co Ltd

Also Published As

Publication number Publication date Type
JPS6252790B2 (en) 1987-11-06 grant

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