To provide experimental supports for resource utilization of chrome shavings

a small-scale external heated fixed bed pyrolyer was used to study the effects of temperature on its pyrolysis products and characteristics. The temperature range of experiment was 350℃ to 750℃. The results showed that the maximum liquid yield was 46.82% at 550℃. With rising temperature until to 750℃

gas yield increased significantly

and its calorific became also higher. The main ingredients in liquid product were N-and N/O-containing compounds. The oxygen content in liquid products decreased obviously with temperature increasing

and that of hexavalent chromium did rapidly and the most stayed in pyrolysis char. Organic functional groups in solid products decreased dramatically when the temperature getting higher

while carbon content increased.