Based on TG-FTIR combined technology

influence of different CaO/M(material) ratios and heating rates on tar generation during pyrolysis of bamboo and dry pulp was investigated.Results show that

the tar is mainly composed of ketone

aldehyde

acid

phenol and hydrocarbon;adding CaO can dramatically reduce the tar content

and the more addition proportion

the better catalytic cracking of tar;increasing the heating rate has bad effect on reducing the tar generation.The pyrolysis of bamboo in tube furnace at 800 ℃ indicate that

the CaO additive can extremely promote the formation of H2

but the CO2 and CO content decreases;the calorific value of produced gas

gas production rate and the char yield increase with the CaO proportion increasing;compared to condition that no CaO is added

the calorific value of produced gas and gas production rate is improved by 33.0% and 27.7% respectively

when the CaO/M ratio is 2.