Taking water steam as the gasification medium

this study investigated the syngas production from co-steam-gasification of rice husk and glycerol in a fixed bed system.The effects of operating temperature

mole ratio of H2 O to C and mass ratio of glycerol to rice husk on the syngas distribution and its low calorific value were studied.The results show that

with an increase in temperature

the H2 concentration increased at first and then decreased slowly

it reached the maximum value at 700℃.While the low calorific value has an opposite change trend

it reached the minimum value at 700 ℃.The CO concentration increased rapidly with the temperature.As the mole ratio of H2 O to C increases

the H2 concentration increased while the CO concentration and low calorific value decreased slowly

and all the three parameters changed little when the mole ratio of H2 O to C is within the range from 2.0to 2.5.As the mass ratio of glycerol to rice increases

the H2 concentration increased gradually

the CO concentration decreased

and the low calorific value increased from 10.3 MJ/m3 to 10.76 MJ/m3.The hydrogen yield

gas yield and carbon conversion increased obviously with the temperature

but over high temperature will cause a decrease in carbon conversion.