[en] Automatic translation: To utilize the process heat of a helium-cooled high-temperature nuclear reactor for coal gasification, the heat must decoupled from the helium cycle of the nuclear reactor and on the coal-gas mixture can be transferred in the gasifier. In terms of the extraction of heat can be assumed that after the current state of the safety concept for high-temperature reactors, the helium must be conducted in a completely sealed circuit that is closed off from the gasifier. The heat is always through the wall of a heat exchanger to transmit through. For heat transfer, there are As compiled in Table 1, the following options: a) direct transfer of heat from the heat exchanger wall on the coal / steam mixture in the gas generator, b) indirect heat transfer via intermediate circuits with heat carriers.