The CHEMET’s screws were arrayed transfer, reversed transfer, agitation, retention,
transfer, reversed transfer, transfer and discharge parts for barely straw
pretreatment. The pretreatment solution penetrated into the biomass during agitation
by the gear pump. The pretreatment temperature was controlled by heated oil,
estimated transfer part (before discharge part), and was automatically maintained at
an error range of
±2 ◦C. While the biomass feeding to discharge time varied slightly
different depending on the situation, it typically took about four minutes