Passive autocatalytic recombiner for controlling hydrogen in nuclear reactor, and application method thereof

The invention discloses a passive autocatalytic recombiner for controlling hydrogen in nuclear reactor, and an application method thereof. The novel passive autocatalytic recombiner is installed in the nuclear reactor and is capable of effectively controlling hydrogen in an enclosed space for avoiding of hydrogen enrichment and blast under a condition of no single energy source. By using the passive autocatalytic recombiner, hydrogen in the nuclear reactor is controllable. The passive autocatalytic recombiner comprises a catalyst structure contained in a case, wherein the case comprises a gas inlet and a gas outlet, and the catalyst structure is contacted with the gas flowing upward from the gas inlet, the gas outlet is disposed at the upper-end side portion of the case, the upper end of the case forms a curved surface or an inclined surface, and the catalyst structure is formed by honeycomb-shaped ceramic.