Name : The 56th Conference of Coal Science
Number : 56
Location : [in Japanese]
Date : October 29, 2019 - October 30, 2019
Pages 52-53
Coal pyrolysis is an important reaction that has much influence on initial situations in coal combustion and gasification processes. We have developed a pyrolysis model, Ex-CPD model that can determine specific light gas and tar molecules. However, the structure parameter of aromatic nucleus that the previous Ex-CPD used increased as decreasing aromaticity index, fa. Therefore, we modified the procedure of determining the structure parameters.
Furthermore, kinetic parameters of decomposition of a labile bridge were adjusted. As a result, the volatile matter calculated by the Ex-CPD model increased as heating rate increased. The Ex-CPD model was used to predict char, soot and light gas yield in coal gasification. The calculation results showed good agreement with the experimental results, especially soot yield tendency to each gasifying agent.
