The invention relates to a device for producing methane gas including a chamber, means for conveying the product in the chamber which comprise a screw mounted to turn in the chamber along a geometric axis of rotation, Joule-effect heating means of the screw, a removal unit for removing impurities present in the gas coming from the thermal treatment of the product, said unit being connected to a high outlet of the chamber, and a purification system for purifying the gas at the outlet of the removal unit.

The invention relates to a cracking furnace containing a tubular vertical chamber which comprises an inlet for introducing a gas to be treated and an outlet for removing said gas from the chamber, means for heating said gas which include a heating tube extending vertically inside the chamber and coaxial with the chamber, the heating tube being shaped in such a way as to have a closed lower end and being arranged in such a way that the lower end thereof is arranged in the chamber and such that the upper end thereof is connected to a burner of the heating means arranged outside the chamber. The invention also relates to an assembly comprising such a cracking furnace and a device for thermal treatment of biomass and/or waste, an outlet of which is connected to the inlet of said cracking furnace.

A gravity-fed housing for use in a gasification system is disclosed. The gravity-fed housing has a receiving end panel that forms a receive opening in a first plane. The receive opening is configured to receive a first plurality of heat carriers via gravity. The gravity-fed housing includes a siding connected to the receiving end panel. The siding forms a chamber and a discharge opening in a second plane that is parallel to the first plane. The discharge opening is offset with respect to the receive opening such that a line perpendicular to the receiving end panel that extends through a center point of the receive opening does not intersect a center point of the second opening. The siding includes a first panel that comprises a guiding surface that intersects the line and is angled toward the discharge opening.