| abstract |
In a process according to the invention for the thermal and chemical utilisation of carbonaceous substances (M1), in a first stage (P1), the carbonaceous substances (M1) are fed and pyrolysed, wherein pyrolysis coke (M2) and pyrolysis gas (M3) are formed. In a second stage (P2), the pyrolysis coke (M2) from the first stage (P1) is gasified, wherein synthesis gas (M4) is formed, and slag and other residues (M5.1, M5.2) are removed. In a third stage (P3), the synthesis gas (M4) from the second stage (P2) is converted into hydrocarbons and/or other products (M6) which are discharged. Surplus gas (M8) from the third stage (P3) is passed as recycle gas into the first stage (P1) and/or the second stage (A2). The three stages (P1, P2, P3) form a closed circuit. By oxidation of the carbonaceous fuels (M6) from the third stage (P3) to form a oxidation gas (M16) essentially consisting of carbon dioxide and water, electrical and/or mechanical energy (E2) can be generated (A51, A55). In addition, in a heat exchanger (P42.1, P42.3) the synthesis gas (M4) can be cooled, wherein superheated steam (M10, M10, M11.1, M11.2) forms, from which electrical and/or mechanical energy (E1) is generated using a heat engine (A62). |