Reactor and process for producing a product gas by gasification of a hydrocarbon-containing fuel

A reactor for producing a product gas by gasification of a hydrocarbon-containing fuel, comprising

• a reaction space comprising an apparatus configured to be an inlet of a fuel and an oxidant for partial oxidation of the fuel with the oxidant thereby producing a hot product gas;
• a cooling space configured for cooling the hot product gas by direct heat exchange with a cooling medium;
• a cooling medium inlet configured to supply of fresh cooling medium to the cooling space;
• a cool gas outlet arranged at the side of the cooling space configured for withdrawing the product gas cooled in the cooling space;
• an intermediate floor which spatially separates the reaction space and the cooling space;
• a gas duct arranged in the intermediate floor and extending through the intermediate floor configured for ducting the product gas to be cooled from the reaction space to the cooling space;
• a cooling medium outlet configured for withdrawing excess cooling medium from the cooling space;
• and
• a shaped body arranged in the cooling space which partially extends over a free cross sectional area of the cooling space and effects partial blocking of the cross sectional area of the cooling space, wherein the shaped body is arranged such that after flowing around the shaped body at least a portion of the cooled product gas subsequently exits the reactor via the cool gas outlet of the cooling space.