Dual mode reactor smr integration

A steam methane reforming method, the method comprising:

• introducing a feedstock comprising steam and desulfurized hydrocarbons into a high space velocity catalytic reactor configured for dual mode operation, one of the dual modes of operation being operation without oxygen addition in a reforming mode and another of the dual modes of operation being operation with oxygen addition in a partial oxidation-reforming mode;
• reacting the feedstock in the high space velocity catalytic reactor such that a pre-reformed gas is produced in the high space velocity catalytic reactor, the pre-reformed gas comprising reduced amounts of heavier hydrocarbons relative to the feedstock;
• withdrawing the pre-reformed gas from the high space velocity catalytic reactor;
• introducing the pre-reformed gas into a steam methane reforming unit;
• and
• reacting the pre-reformed gas in the steam methane reforming unit to produce a syngas.