Optimization of Pyrolysis Technical Parameters for Cotton Stalk Based on Response Surface Methodology

Biomass pyrolysis is a good high-value process of biomass conversion. Study on the pyrolysis products of crushed cotton stalks pyrolysis experiments in the self-made airtight equipment. The effects of three factors (pyrolysis temperature, pyrolysis heating rate and pyrolysis holding time) were investigated by using the mass of the solid products yield as the indexes. Box-Benhnken design (BBD) and response surface methodology (RSM) were adopted to obtain the optimum parameters on the basis of results of single-factor experiments. The results show that: when pyrolysis temperature is 500 degrees C. the heating rate is 9 degrees C/min and holding time is 1h, solid products yield 33.4123%, liquid products yield 36.5699%, and gaseous products yield 30.0178%.