| abstract |
The invention relates to a method and plant for producing synthesis gas (3) from hydrocarbons (1). In the method, in a first step, hydrocarbons are split, using a plasma gas at high temperatures, into hydrogen (6) and carbon (5). Said product is mixed with steam (8) and carbon dioxide (9), and the carbon (5) is almost entirely converted to hydrogen and carbon monoxide in a temperature range from 800° C to 1700° C. Heat (10) is supplied to maximize the conversion. The product is then quenched (13). Synthesis gas (3) can be partially (3a) fed back and used as plasma gas. In further steps, such as Fischer-Tropsch synthesis, the synthesis gas (3) is further converted and then separated into various fractions. |