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Desulfurization by Mixing Burning of Straw Soda Pulping Stock Liquor and Coal
  
DOI：10.11980/j.issn.0254-508X.2015.07.013
Key Words:alkaline pulping black liquor  pulp black liquor  desulfurization
Fund Project:973基础研究发展计划项目（2014CB460610）。
Author NameAffiliation
陈夫山 青岛科技大学生态化工国家重点实验室培育基地，山东青岛，266042 
张俊宏* 青岛科技大学生态化工国家重点实验室培育基地，山东青岛，266042 
宋晓明 青岛科技大学生态化工国家重点实验室培育基地，山东青岛，266042 
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Abstract:The coal water slurry(CWS) can be prepared by using straw alkaline pulping black liquor and coal, the alkaline substances in pulping black liquor(such as NaOH、 Na2CO3 etc.) can react with SO2 in flue gas to be sulfate and fixes in slag when combustion of coal water slurry at high temperature. On the one hand, lignin and hemicellulose in the black liquor can increase the heat value in the combustion process; on the other hand, lignin can be degraded and generate catechol then it is oxidized to quinone structure in catalytic alkaline substances. These structures have a key role in sulfur-absorption and extrusion and it can solve the haze problems caused by coal dust effectively.
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