ES2187318B1 - REDUCING ADDITIVE OF THE VISCOSITY OF BLACK LIGHTS IN HIGH SOLIDS AND METHOD FOR REDUCING THE VISCOSITY OF BLACK LIGHTS IN SOLIDS. - Google Patents

REDUCING ADDITIVE OF THE VISCOSITY OF BLACK LIGHTS IN HIGH SOLIDS AND METHOD FOR REDUCING THE VISCOSITY OF BLACK LIGHTS IN SOLIDS.

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Publication number
ES2187318B1
ES2187318B1 ES200000913A ES200000913A ES2187318B1 ES 2187318 B1 ES2187318 B1 ES 2187318B1 ES 200000913 A ES200000913 A ES 200000913A ES 200000913 A ES200000913 A ES 200000913A ES 2187318 B1 ES2187318 B1 ES 2187318B1
Authority
ES
Spain
Prior art keywords
viscosity
solids
reducing
black lights
black
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.)
Expired - Fee Related
Application number
ES200000913A
Other languages
Spanish (es)
Other versions
ES2187318A1 (en
Inventor
Argimiro Llamas Marcos
Juan Vazquez Cabello
Tomas Dominguez Sanchez
Pedro Llamas Galilea
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad de Huelva
Original Assignee
Universidad de Huelva
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
Application filed by Universidad de Huelva filed Critical Universidad de Huelva
Priority to ES200000913A priority Critical patent/ES2187318B1/en
Publication of ES2187318A1 publication Critical patent/ES2187318A1/en
Application granted granted Critical
Publication of ES2187318B1 publication Critical patent/ES2187318B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Aditivo reductor de la viscosidad de lejías negras de alto contenido en sólidos y método para la reducción de la viscosidad de lejías negras de alto contenido en sólidos. Se mezcla una lejía negra, de al menos 50% en sólidos, obtenida en una planta de fabricación de pasta de celulosa según el proceso kraft, con un aditivo reductor de viscosidad, en una proporción del 0,1 al 1% en peso de sólido seco de lejía, antes de su quema en la caldera de recuperación. Los aditivos objeto de la invención son: formamida, N-dimetilformamida y N-dimetilacetamida puras o mezclados en todas las proporciones posibles.High viscosity black liquor viscosity reducing additive and method for reducing the viscosity of high solids black liquors. A black bleach, of at least 50% solids, obtained in a cellulose pulp manufacturing plant according to the kraft process, is mixed with a viscosity reducing additive, in a proportion of 0.1 to 1% by weight of solid Dry bleach, before burning in the recovery boiler. The additives object of the invention are: formamide, N-dimethylformamide and N-dimethylacetamide pure or mixed in all possible proportions.

ES200000913A 2000-04-07 2000-04-07 REDUCING ADDITIVE OF THE VISCOSITY OF BLACK LIGHTS IN HIGH SOLIDS AND METHOD FOR REDUCING THE VISCOSITY OF BLACK LIGHTS IN SOLIDS. Expired - Fee Related ES2187318B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200000913A ES2187318B1 (en) 2000-04-07 2000-04-07 REDUCING ADDITIVE OF THE VISCOSITY OF BLACK LIGHTS IN HIGH SOLIDS AND METHOD FOR REDUCING THE VISCOSITY OF BLACK LIGHTS IN SOLIDS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200000913A ES2187318B1 (en) 2000-04-07 2000-04-07 REDUCING ADDITIVE OF THE VISCOSITY OF BLACK LIGHTS IN HIGH SOLIDS AND METHOD FOR REDUCING THE VISCOSITY OF BLACK LIGHTS IN SOLIDS.

Publications (2)

Publication Number Publication Date
ES2187318A1 ES2187318A1 (en) 2003-06-01
ES2187318B1 true ES2187318B1 (en) 2004-06-16

Family

ID=8493108

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200000913A Expired - Fee Related ES2187318B1 (en) 2000-04-07 2000-04-07 REDUCING ADDITIVE OF THE VISCOSITY OF BLACK LIGHTS IN HIGH SOLIDS AND METHOD FOR REDUCING THE VISCOSITY OF BLACK LIGHTS IN SOLIDS.

Country Status (1)

Country Link
ES (1) ES2187318B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2003174A6 (en) * 1986-11-27 1988-10-16 Ahlstroem Oy Decreasing viscosity and enhancing evapn. of black liquors
US4734103A (en) * 1987-07-22 1988-03-29 Nalco Chemical Company Viscosity/drag reducing additive for high solids black liquor
GB2237751B (en) * 1989-11-03 1993-09-15 Ahlstroem Oy Method of decreasing black liquor viscosity
GB9503562D0 (en) * 1995-02-23 1995-04-12 Thor Technology Corp Black liquor viscosity control
US5635027A (en) * 1995-04-03 1997-06-03 North Carolina State University Method of reducing the viscosity of a black liquor

Also Published As

Publication number Publication date
ES2187318A1 (en) 2003-06-01

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