Page 150 - Biomass Gasification, Pyrolysis And Torrefaction Practical Design and Theory
P. 150

Chapter | 4  Torrefaction                                    127



                                            Magnetron
                                                    Raw biomass
                                    Microwaves

                        Inert gas out        Moving belt      Inert gas in



                                  Torrefied biomass
                    A. Microwave reactor
                                       Raw blomass


                                                        Gas out
                                               Gas












                                                       Torrefied blomass
                                       Hot inert gas
                    B. Moving bed reactor
                             Feed belt  Raw biomass
                                      inlot
                                                    Gas out




                         Scraper                              Circulating
                                                              fan
                                                              Heat
                                                              exchanger
                                                Moving
                                                system
                                 Torrefield              Hot gas
                                 blomass
                    C. Multiple hearth furnace
             FIGURE 4.9 Schematic of some torrefaction technologies.
   145   146   147   148   149   150   151   152   153   154   155