Abstract: The present invention relates to a protection apparatus (100) for protecting an electrical circuit. The protection apparatus comprises a thermal protection device (10) for interrupting the electrical circuit at a specific temperature and also an insertion slot (20) for receiving a fuse (21) for interrupting the electrical circuit at a specific current intensity in the electrical circuit. The thermal protection device (10) and the insertion slot (20) are connected in series in the electrical circuit (40), wherein the insertion slot and the thermal protection device are arranged adjacently.

Abstract: A fixed bed arrangement formed as an insert for a reactor for catalytic conversion of reaction media, in particular for catalytic methanation of a gas mixture including hydrogen and carbon dioxide, having a receiving chamber, which extends axially within an outer sleeve, and through which reaction media flows during the reactor operation for receiving a catalyst material, and a heat exchanger arrangement having a fluid flow path for a temperature control fluid, which fluid flow path is spatially separated from the receiving chamber, for removing and supplying heat from/to the process. The outer sleeve is formed by the heat exchanger arrangement, at least in regions. The fixed bed arrangement includes a reactor for the catalytic reaction of reaction media having a pressure chamber for receiving reaction media, and such a fixed bed arrangement inserted into the pressure chamber.

Abstract: The present invention relates to a protection apparatus (100) for protecting an electrical circuit. The protection apparatus comprises a thermal protection device (10) for interrupting the electrical circuit at a specific temperature and also an insertion slot (20) for receiving a fuse (21) for interrupting the electrical circuit at a specific current intensity in the electrical circuit. The thermal protection device (10) and the insertion slot (20) are connected in series in the electrical circuit (40), wherein the insertion slot and the thermal protection device are arranged adjacently.

Abstract: A fixed bed arrangement formed as an insert for a reactor for catalytic conversion of reaction media, in particular for catalytic methanation of a gas mixture including hydrogen and carbon dioxide, having a receiving chamber, which extends axially within an outer sleeve, and through which reaction media flows during the reactor operation for receiving a catalyst material, and a heat exchanger arrangement having a fluid flow path for a temperature control fluid, which fluid flow path is spatially separated from the receiving chamber, for removing and supplying heat from/to the process. The outer sleeve is formed by the heat exchanger arrangement, at least in regions. The fixed bed arrangement includes a reactor for the catalytic reaction of reaction media having a pressure chamber for receiving reaction media, and such a fixed bed arrangement inserted into the pressure chamber.