The present invention relates to a batch furnace for annealing material comprising a furnace housing which has a closable loading opening, a receiving chamber for furnace material and a device for convective heat transfer to the furnace material by a heat transfer medium, wherein the device for convective heat transfer comprises at least one heating device and at least one fan which is arranged in the furnace housing wherein the receiving chamber is arranged on the suction side of the fan and at least one nozzle array is arranged on the pressure side of the fan, wherein the nozzle array has a central opening which forms an intake duct of the fan and the nozzle array projects radially beyond the fan. The invention further relates to a method for heat treatment of a furnace material.

The present invention relates to a batch furnace for annealing material comprising a furnace housing which has a closable loading opening, a receiving chamber for furnace material and a device for convective heat transfer to the furnace material by a heat transfer medium, wherein the device for convective heat transfer comprises at least one heating device and at least one fan which is arranged in the furnace housing wherein the receiving chamber is arranged on the suction side of the fan and at least one nozzle array is arranged on the pressure side of the fan, wherein the nozzle array has a central opening which forms an intake duct of the fan and the nozzle array projects radially beyond the fan. The invention further relates to a method for heat treatment of a furnace material.

A system for chemical transformation of 3D state materials is disclosed wherein, a reaction group having a main body arranged to shape a reaction chamber in which a component configured to support a sample of 3D state arranged to be chemically transform is expected. The system further includes an oven arranged to heat the reaction chamber and a GAS supply group arranged to release a first gas in the reaction chamber and/or a casing component, inside the main body, which has a chemical agent suitable for releasing a second gas into the reaction chamber. The main body has at least two turbines arranged to converge into the reaction chamber, the first and/or the second gas on the samples. The invention relates also to a method for chemical transformation of 3D state materials.