| 摘要 |
<p>A synthesis gas is prepared by heating the reaction mixture of hydrocarbon (1) and steam (2) and/or carbon dioxide (8) in a heated steam reforming unit (21, 23), and feeding the partially steam reformed mixture to the fired tubular reformer. The heated steam reforming unit comprises a piping system containing reaction sections with solid reforming catalyst comprising catalyst pellets and/or catalyzed structured elements. Preparation of synthesis gas by catalytic stream and/or carbon dioxide reforming of hydrocarbon feedstock, involves heating the reaction mixture of hydrocarbon and steam and/or carbon dioxide in a heated steam reforming unit integrated with the flue gas containing waste heat section (27) from the fired tubular reformer (29) in which reforming of the reaction mixture takes place by contact with a solid reforming catalyst; and feeding the partially steam reformed mixture to the fired tubular reformer and further reforming the mixture to the desired composition and temperature. The heated steam reforming unit comprises a piping system containing reaction sections with solid reforming catalyst comprising catalyst pellets and/or catalyzed structured elements. The piping system is part of the process gas piping system integrated with the flue gas-containing waste heat section. An independent claim is also included for an apparatus for the preparation of synthesis gas comprising an adiabatic pre-reformer (20) for optional pre-reforming of a mixture of hydrocarbon and steam and/or carbon dioxide, a fired tubular reformer with a flue gas-containing waste heat section for heating of a mixture of hydrocarbon and steam and/or carbon dioxide or of the pre-reformed mixture (4), and a heated steam reforming unit.</p> |
