화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.27, 192-200, July, 2015
DOI10.1016/j.jiec.2014.12.034  Export Citation
Investigation of grafted sulfonated alkali lignin polymer as dispersant in coal-water slurry
Yanlin Qin1, Dongjie Yang1, 2, †, Wenyuan Guo1, and Xueqing Qiu1, 2, †
  • 1School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
  • 2State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
E-mail:,
A novel grafted sulfonated alkali lignin polymers (GSAL) with hydrophilic side chain and different molecular weights prepared were used as dispersants for coal-water slurry (CWS). The viscosity reduction for CWS had been attributed primarily to the diminution of coal particles (adsorbed GSAL) interaction of steric electrostatic repulsion and dramatic wettability. The adsorption amount of GSAL-3 can reach to 1.58 mg/g, and the isotherm of GSAL on coal surface belongs to the Langmuir model, the electrostatic self-assembly result indicated the dominant driving force of GSAL absorbed on coal surface was the π?π interaction. GSAL was superior in reducing the viscosities of CWS.
Keywords:Coal-water slurry;Grafted sulfonated alkali lignin;Molecular weight;Dispersing performance;Adsorption characteristic
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