| 摘要 |
The invention relates to a method for producing a product gas rich in hydrogen, wherein a starting material comprising carbon is split by means of pyrolysis, and the resulting pyrolysis gas, which is mixed with water vapor to increase the hydrogen content, is heated. The method obtains the heat necessary for the process from the combustion of the pyrolysis coke that is produced. To this end, the heat necessary for the individual process steps is fed to the process by means of a heat transfer medium circuit, which is heated in a heating zone (13) by means of flue gas (12) from the pyrolysis coke firing (11), the pyrolysis / water vapor mixture is subsequently heated in a reaction zone (3), the pyrolysis zone (2) is heated, cooled in a cooling zone (19), and subsequently returned to the beginning of the circuit. For improved use of the heat and more accurate temperature control, the invention discloses that a preheating zone (13) is provided in the heat transfer medium circuit upstream of the heating zone (13), wherein the heat transfer medium circuit is preheated by means of the hot product gas, and that the heat transfer occurs in the pyrolysis zone (2) indirectly, and without any direct contact with the heat transfer medium. |
