Summary

The containing Pentosan plant fiber materials (like Corn cob, peanut shells, cotton seed hulls, rice hulls, sawdust, cotton wood) will hydrolysis into pentose in the fluence of the certain temperature and catalyst, Pentoses leave off three water molecules to form furfural

The corn cob is used by the materials usually, and after a series of process that include Purification, crushing, with acid hydrolysis, mash distillation, neutralization, dewatering, refining  get the qualified  furfural  in the end.

The "Waste" will be sent to the boiler combustion, the ash can be used as filled material for the infrastructure or organic

Third, the process flow chart: