MCM41/Hβ分子筛对小球藻制备生物油的催化热解

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常聪， 郭庆杰*， 王许云， 仲卫成

 (青岛科技大学 化工学院；山东省清洁化工过程重点实验室，山东 青岛 266042)

 摘要： 以小球藻为原料，选用MCM41和Hβ两种分子筛催化剂，在固定床反应器上进行催化热解实验，研究了分子筛催化剂对小球藻热解产物分布、生物油物性和组成的影响。与直接热解相比，MCM41分子筛催化剂使生物油产率下降706%，氧含量和含水率分别降至9257%和7804%，热值提高近8%，达到31224 MJ·kg-1。小球藻经MCM41和Hβ催化热解后，脂肪烃、醇类和含氮化合物含量都明显增加，同时酚类和羰基化合物含量减少。结果表明，两种分子筛均具有一定的催化脱氧功效，且MCM41比Hβ更有利于改善小球藻热解油的品质和燃料用途。

 关键词： 小球藻； 直接热解； 催化热解； MCM41； Hβ

 中图分类号：TK 6文献标志码： A

 Study on Catalytic Pyrolysis of Chlorella to Biooil with MCM41/Hβ as Catalyst

 CHANG Cong, GUO Qingjie, WANG Xuyun, ZHONG Weicheng

 (CollegeofChemical Engineering; Key Laboratory of Clean Chemical Processing ofShandongProvince,

QingdaoUniversityof Science and Technology,Qingdao266042,China)

 Abstract: Catalytic pyrolysis experiments of chlorella were carried out in a fixed bed reactor using molecular sieves MCM41 and Hβ. The influence of the both catalysts on the product distribution, physical property and components of biooil were researched. With MCM41 catalyst, the yield of the biooil decreased about 706%, and the oxygen content and moisture content of the biooil reduced to 9257% and 7804% respectively. The biooil calorific value increased by 8%, and reached 31224 MJ·kg-1. The catalytic pyrolysis of chlorella with MCM41 increased the yields of aliphatic hydrocarbon, alcohols and nitrogenous compounds significantly, while, the mass fraction of phenols and carbonyl compounds decreased.The results indicated that both the catalysts exhibited certain degrees of deoxygenation. In general, it is more conducive to improve the quality of the biooil for MCM41 than Hβ as the catalyst in the catalytic pyrolysis of chlorella.

Key words: chlorella; fast pyrolysis; catalytic pyrolysis; MCM41; Hβ

收稿日期： 20130308

基金项目： 海洋可再生能源专项资金项目（GHME2001SW02 (20876079)）； 山东省科技攻关项目(2009GG10007001).

作者简介： 常聪(1988—)，男，硕士研究生.*通信联系人.