| 摘要 |
The invention relates to a method for processing waste or biomass material into valuable products such as, for example, combustible gases, which is characterized in that (a) the waste or biomass material is subjected to a pyrolysis at a temperature of 350-650 DEG C, advantageously 450-550 DEG C; (b) the gas released in the course of the pyrolysis is subjected -without condensation - to a cracking treatment at a temperature of 1100-1600 DEG C, advantageously 1200-1400 DEG C, under the influence of oxygen-rich gas introduced from outside and possibly of steam; (c) the residue liberated in the course of the pyrolysis is gasified under a pressure of 0.5-1.5 bar, advantageously 0.8-1.2 bar, at a temperature of 1200-1700 DEG C, advantageously 1400-1600 DEG C, and is volatilized or, as the case may be, fused under reducing conditions; (d) the fused slag or metal concentrate obtained under stage (c) is discharged or, as the case may be, recovered; (e) the product gases obtained in the course of stages (b) and (c) are combined or not combined and then subjected to gas cleaning. |
