| 摘要 |
<p>The process is using iron containing material for heat recovery and heat transfer in the pyrolysis and gasification stages. The iron containing material is simultaneously serving as a chemical reactant by reacting with supplied water or water vapor with formation of hydrogen. The process is carried out in three reaction steps: preheating (1) of the iron containing material, reduction (2) of the iron containing material with supplied solid fuel which is pyrolysed, and oxidation (3) of the iron containing material with water vapor simultaneously with gasification of eventually remaining pyrolysis residues from the reduction step (2) to a product gas containing varying quantities of hydrogen, carbon monoxide, methane, etc. The process has many fields of application from production of an intermediate Btu gas from urban waste to production of hydrogen from bio-fuels. The apparatus consists of several reactor parts with means (22) for transport of the iron containing material from the oxidation step (3) to the preheat step (1) and conduits (7) for transport of pyrolysis gas which remains from the reduction step (2) to the preheat step (1). </p> |
