Abstract: A plant for the gasification of fossil fuels which includes a reactor container and a further plant component attachable to the reactor container. The reactor container has a discharge opening and includes a connection part extending outwardly from the discharge opening. A fireproof lining, which determines the inner cross-sectional area of the container, is provided within the container. An intermediate ring is interposed between the connecting part of the reactor container and the further plant component for attaching the connecting part to the further plant component. This intermediate ring is provided with a fireproof lining having an area of reduced inner cross-section which is less than the inner cross-sectional area of the fireproof lining of the reactor container, the area of reduced cross-section being the smallest cross-sectional area in the connection between the reactor container and the further plant component.