核桃壳脱硫活性炭成型工艺研究  

Molding Process of the Columnar Activated Carbon from Walnut Shell for Flue Gas Desulfurization

作　　者：程婷[1] 陈杰[1,2] 黄祥[1] 蒋文举[1,2] 郭家秀[1,2] 

机构地区：[1]四川大学建筑与环境学院,四川成都610065 [2]国家烟气脱硫工程技术研究中心,四川成都610065

出　　处：《林产化学与工业》2013年第4期48-52,共5页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(51078245)

摘　　要：研究了羧甲基纤维素钠(CMC-Na)、聚乙烯醇缩丁醛树脂(PVB)和煤焦油等黏结剂和成型压力对新型柱状核桃壳活性炭性能的影响,对其织构性能进行了表征,并考察了脱硫性能。结果表明,以50%(以炭化料质量计,下同)的煤焦油为基本黏结剂,10%CMC-Na和8%淀粉为辅助黏结剂,在4 MPa的压力下真空挤压成型得到的新型柱状活性炭,碘吸附值达到715.6 mg/g,得率为53.5%,抗压强度可达15.1 MPa,比表面积达到564.8 m2/g,总孔容0.38 cm3/g,中孔孔容占总孔容的78.9%。新型柱状核桃壳活性炭的穿透硫容为130.8 mg/g,穿透时间可达8.5 h,具有较好的脱硫性能。The influence of sodium carboxymethyl cellulose （CMC-Na） or polyvinyl butyral resin （ PVB ） , coal tar addition and molding pressure on formation of the novel columnar activated carbon prepared from walnuts shell was investigated. The desulfu- rization performance of the prepared samples was investigated and the texture was characterized using nitrogen adsorption-desorp- tion. The results showed that the columnar activated carbon could be prepared under 4 MPa of molding pressure with 50 % of coal tar as basic blinder, 10 % of CMC and 8 % of starch as assistant binder. This activated carbon has 715.6 mg/g iodine ad- sorption value, 53.5 % yield, 15.1 MPa compressive strength, 564.8 m2/g specific surface area and 78.9% mesopore volume. The activated carbon prepared in the above conditions has breakthrough sulfur capacity of 130.8 mg/g and breakthrough time of 8.5 h. It exhibits good desulfurization performance.

关 键 词：活性炭 黏结剂 成型 烟气脱硫 

分 类 号：TQ35[化学工程] TQ424