Gas generator and processes for the conversion of a fuel into an oxygen-depleted gas and/or hydrogen-enriched gas

The present invention relates to a gas generator for converting a fuel into an oxygen-depleted gas and/or hydrogen-enriched gas. The gas generator, which may be used in any process requiring oxygen-depleted gas and/or hydrogen-enriched gas, is preferably used for generating protection gas or reducing gas for start up, shut down or emergency shut down of a SOFC or SOEC. The present invention further relates to processes for the conversion of fuels into an oxygen-depleted gas and/or a hydrogen-enriched gas.