Depending on the feedstock, reaction conditions and gasification agent the synthetic gas produced is composed mainly of hydrogen (H2), carbon monoxide (CO), water vapor (H2O), methane (CH4) nitrogen (N2) and (in small amounts) carbon dioxide (CO2). In addition to the synthetic gas, vitrified slags and waste heat are produced.
Check Presentation for pictures in English. Slide 16
The combustion process works through the following stages:
|Drying||Evaporation of the water content from the feedstock||100 to 200 °C|
|Pyrolysis||Carbonisation and coking of the feedstock in the absence of oxygen||200 to 450 °C|
|Gasification||Partial oxidisation of the feedstock at approx. Lambda 0.3||450 to 800 °C|
|Oxidation||Combustion of raw gas||800 to 1200 °C|
The terms TCC and/or High-temperature gasification are used to describe processes that are discontinued after the gasification process step. The generated gas is used in a separate process step (cleaning).