Extraction Kinetics of Montan Wax with Benzene and Methanol

Abstract

Crude Montan wax was leached out of a low-rank coal by a 50:50 vol.% mixture of benzene and methanol. An extraction yield of 35.5% with respect to the available wax or 2.25% with respect to the extracted coal was reached after 143 min. The wax production was well described by a kinetics with two consecutive steps, and the extraction column behaved as an ideal plug-flow chemical reactor.