摘要
该文主要对生物质热解过程中焦炭物化结构的演变特性与转化机理进行分析研究。在固定床反应器上，以棕榈壳为样品，热解终温从300—1000℃下制得焦炭，采用比表面积和孔径分析仪与傅里叶红外光谱仪等用对不同温度下所得焦炭的物化结构进行深入分析。研究发现煤焦的表面孔隙结构的形成和丰富主要集中在400-600℃，随着碳化温度的升高，孔面积先增大后减小，在约600℃有较高的比表面积；棕榈壳焦内的有机官能团（C=O，C—C，C—H，C-O和OH等）的断裂和缩合也主要发生在中低温度段，同时固体焦内，碳的含量逐渐增加，而氢元素的含量逐渐减少。
To catch the forming characteristic of char during biomass pyrolysis, char was pretreated in fixed bed with the pyrolysis temperature variant from 300 to 1 000 ℃, with palm oil shell as biomass sample. The physic-chemical property was analyzed with Fourier Transform Infrared Analysis, an accelerated surface area porosimetry （ASAP2020）, elemental analyzer, etc. analysis instruments. It was observed that the pore structure of shell char was mainly formed and enriched at 400--600 ℃. The surface area increased with temperature increasing, and reached the maximum value about 600 ℃. The main functional group of char are C=O, C-C, C-H, C-O and OH, etc, The cracking and reforming of char is taken place at low temperature （〈600 ℃） The carbon content increased gradually, while hydrogen content decreased.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第32期106-110,共5页
Proceedings of the CSEE
基金
国家重点基础研究专项经费项目(2007CB210202)
国家自然科学基金项目(50721005
50676037)~~
关键词
棕榈壳
焦炭
孔隙结构
化学组成
palm oil shell
charcoal
pore structure
chemical components
