On-line analysis on the interaction between organic compounds from co-pyrolysis of microalgae and low-rank coal: Thermal behavior and kinetic characteristics

The interaction between organic compounds from microalgae and low-rank coal during the co-pyrolysis process was explored via thermogravimetric analyzer combined with an online mass spectrometer. The influence of Glycine (GLE) on thermal behavior and kinetic characteristics from gaseous products generation of mixtures of acid washed low-rank coal (ALC) were investigated. Positive and negative synergistic effects from the pyrolysis parameters and products distribution were observed due to the interaction between GLE and ALC. The addition of GLE promoted the char formation under 75 wt% mixing ratio, with about 24 wt% deviation between the calculated value and experimental value. Negative synergistic effects from yield of CO₂ and CH₄ were found. Kinetic results showed that the order for activation energy was E(H₂) > E(CH₄) > E(CO) > E(CO₂), which was consistent with the releasing sequence.