The invention relates to a
metal catalytic reactor as well as preparation and application thereof in preparation of synthesis gas by reforming
natural gas and CO2
dry gas, a contact surface of a
metal tube and a reaction
raw material is coated and doped with a catalyst
active component, a catalytic
dopant thin layer is formed on the contact surface of the
metal tube and the reaction
raw material, and the metal catalytic reactor is obtained. The metal reactor is used for reforming reaction of
natural gas and CO2
dry gas, and can realize efficient conversion of
methane and
carbon dioxide, high catalyst stability and low
carbon deposition generation. According to the invention, the conversion rate of
methane is 80-96%; the conversion rate of
carbon dioxide is 80-98%; the selectivity of
carbon monoxide is greater than 99%; cO / H2 = 1; and
carbon deposition is low. The method has the characteristics of long catalyst service life, high
methane conversion rate and product selectivity, low
carbon deposition, no need of catalyst amplification, small industrialization difficulty, easy product separation, good process
repeatability, safe and reliable operation and the like, and has a wide industrial application prospect.