METHOD AND APPARATUS FOR PYROLYSIS AND GASIFICATION OF BIOMASS THROUGH TWO INTERNECTED OVENS

摘要

Method and apparatus for pyrolysis and biomass gasification through two interconnected furnaces. A method and apparatus for gassing the biomass of pyrolysis through two interconnected furnaces. The method uses solid particles of high heat capacity as a carrier of energy and water saturated as an oxidizer. Firstly, biomass is subjected to a low temperature pyrolysis at a temperature between 500 and 800C in order to obtain a crude synthetic gas free of alkaline metal oxide and coke. Then the crude synthetic gas and coke undergo high temperature gasification,At a temperature 10 between 1200 and 1600 (c) to obtain a tar -free synthetic gas. Finally, the synthetic gas produced is subjected to a cooling sequence, dust removal,Acid removal and dehydration processes. The device includes: a gasification oven (4) a pyrolysis oven (6),Arranged on top of each other, the interior cavities of these being interconnected, a particle heater (1 0),A plasma heater blowtorch (11),An exhaust fan (12),And a first heat exchanger (13) cyclically arranged from a water storage container (16) to make water vapour saturated, a water supply pump (15),A second heat exchanger (14),A dust remover (17),An acid remover (18),And a dehydration device (19).