Abstract: The invention relates to methods for converting algal biomass into a gas or into biocrude comprising (a) gasification or hydrothermal liquefaction of an algal biomass in at least one first reactor, (b) separation of the gas or biocrude produced thereby from the aqueous effluents and the CO2 produced, at the outlet of the first reactor, (c) recovery of the aqueous effluents, and (d) oxidation of the aqueous effluents in at least one second reactor. Continuous processes for culture of algal biomass and conversion of the algal biomass cultivated into a gas or into a biocrude are also disclosed.

Abstract: The invention relates to methods for converting algal biomass into a gas or into biocrude comprising (a) gasification or hydrothermal liquefaction of an algal biomass in at least one first reactor, (b) separation of the gas or biocrude produced thereby from the aqueous effluents and the CO2 produced, at the outlet of the first reactor, (c) recovery of the aqueous effluents, and (d) oxidation of the aqueous effluents in at least one second reactor. Continuous processes for culture of algal biomass and conversion of the algal biomass cultivated into a gas or into a biocrude are also disclosed.

Abstract: The main purpose of the invention is a fast pyrolysis reactor (1) with entrained flow of biomass organic particles (2), comprising a reaction chamber (3), a device (4) for injection of particles (2) in the upper part (3a) of the reaction chamber (3), to form a flow (FG) of particles (2) dropping by gravity, an evacuation duct (5) for products originating from the pyrolysis reaction present in the reaction chamber (3), characterized in that it also comprises a counter current hot neutral gases injection duct 6 in the lower part (3b) of the reaction chamber (3) making it possible to form a counter current flow (FG) of hot neutral gases coming into contact with the flow (FG) of particles (2) dropping by gravity, the temperature of the hot neutral gases being between 500 and 600° C., and the diameter of the particles (2) being between 200 ?m and 1 mm.

Abstract: The invention relates to a novel process for the thermochemical conversion of a carbon-based feedstock to synthesis gas containing predominantly hydrogen (H2) and carbon monoxide (CO). The process comprises (a) oxycombustion of the carbon-based feedstock to create a cogeneration of electricity and of heat; (b) high-temperature electrolysis (HTE) of water using at least the heat produced according to step (a); and (c) reverse water gas shift (RWGS) reaction starting from the carbon dioxide (CO2) produced according to step (a) and the hydrogen (H2) produced according to step (b).