Abstract: Disclosed are a facility and a method using the facility for treating a feed gas stream comprising at least methane and carbon dioxide by membrane permeation, the facility comprising: —a first membrane separation unit capable of receiving the feed gas stream and providing a first permeate and a first retentate, —a second membrane separation unit capable of receiving the first retentate and providing a second permeate and a second retentate, —a compressor for compressing the first permeate to a pressure of between 17 bar and 25 bar, —a means for cooling the first compressed permeate to a temperature lower than ?40° C.

Abstract: Process for producing biomethane from a biogas stream including methane, carbon dioxide and at least one impurity chosen from ammonia, volatile organic compounds, water, sulfur-based impurities (H2S) and siloxanes. A biogas stream is dried, the at least one impurity is at least partially removed by solidification and removal of the impurity. The methane and the carbon dioxide contained in the biogas obtained from the second step are separated so as to produce a biomethane stream and a CO2 stream.

Abstract: A plant for producing at least partially desulfurized biogas, comprising a biomass digester and/or post-digester, the digester and/or post-digester comprising: a chamber (1) comprising the biomass (2) and the gas space (3), and a system (6) for injecting an oxidizing gas into the gas space, wherein the injection system comprises a tubular means (4) comprising a T-shaped portion the vertical bar of which is placed in the axis of symmetry of the chamber and the horizontal bar of which has micro-injectors (5).

Abstract: Device for the production of at least partially desulfurized biogas comprising: a digester, a means for continuous introduction of biochar into the digester and a membrane separation unit placed on the stream of biogas exiting from the digester and comprising at least one membrane allowing the sulfur-comprising products to permeate.

Abstract: Plant and process for the production of liquid methane from a feed gas stream comprising at least methane and carbon dioxide. A feed gas stream is injected into a CO2 crystallizer in countercurrent fashion against a stream of predominantly liquid methane, thereby crystallizing amounts of carbon dioxide from the feed gas stream. Gaseous methane recovered from the CO2 crystallizer is liquefied at a liquefaction exchanger.

Abstract: A plant for producing at least partially desulfurized biogas, comprising a biomass digester and/or post-digester, the digester and/or post-digester comprising: a chamber comprising the biomass and the gas space, and a system for injecting an oxidizing gas into the gas space, wherein the injection system comprises a tubular means formed in a grid pattern, having a centre of symmetry placed in the axis of symmetry of the chamber, and having micro-injectors.

Abstract: Plant for producing at least partially desulfurized biogas, comprising a biomass digester and/or post-digester, the digester and/or post-digester comprising: a chamber comprising the biomass and the gas space, and a means for introducing an oxidizing gas, characterized in that the portion of the inner wall of the chamber situated at the level of the gas space exhibits expansions and/or hollows.

Abstract: A plant for producing at least partially desulfurized biogas, comprising a biomass digester and/or post-digester, the digester and/or post-digester comprising: a chamber comprising the biomass and the gas space, and a means for introducing an oxidizing gas, characterized in that the portion of the inner wall of the chamber situated at the level of the gas space is at least partly porous.

Abstract: Plant for producing at least partially desulfurized biogas, comprising a biomass digester and/or post-digester, the digester and/or post-digester comprising: a chamber (1) in which an anaerobic digestion of the biomass takes place, leading to the production of biogas (2) and of digestate (3), a means for introducing an oxidizing gas, a desulfurization net (4) placed horizontally and fastened in the upper part of the chamber, and ropes (5) attached to said desulfurization net and which hang down to the biogas-digestate interface.

Abstract: A process for producing synthesis gas using at least a first and a second steam reforming reactor each having at least one reaction stage enabling the circulation of a reaction mixture and at least one heat supply stage enabling the circulation of a heat transfer fluid.

Abstract: A process for conducting exothermic equilibrium reactions, especially for the performance of methanol synthesis by heterogeneously catalysed conversion of synthesis gas, is proposed, which enables readjustment and hence optimization of the reaction conditions along the longitudinal coordinate of the reactor. For this purpose, in the process according to the invention, a reactor is used which is divided into a multitude of series-connected reaction cells, each of which comprises a preheating zone, a cooled reaction zone, one or more cooling zones and a deposition zone for condensable reaction products. In this way, the reaction conditions are adjustable to the respective, local composition of the reaction mixture and variable over the reactor length.

Abstract: A reactor for conducting exothermic equilibrium reactions, especially for the performance of methanol synthesis by heterogeneously catalysed conversion of synthesis gas, is proposed, which enables readjustment and hence optimization of the reaction conditions along the longitudinal coordinate of the reactor. For this purpose, in accordance with the invention, the reactor is divided into a multitude of series-connected reaction cells, each of which comprises a preheating zone, a cooled reaction zone, one or more cooling zones and a deposition zone for condensable reaction products. In this way, the reaction conditions are adjustable to the respective, local composition of the reaction mixture and variable over the reactor length.

Abstract: The invention relates to an exchanger-reactor comprising at least three stages with at least one stage comprising both: millimetric channels at least partially covered with a catalyst for stimulating a steam reforming reaction, and millimetric channels at least partially covered with a catalyst for stimulating a water gas reaction.

Abstract: Plant and process for the production of liquid methane from a feed gas stream comprising at least methane and carbon dioxide. A feed gas stream is injected into a CO2 crystallizer in countercurrent fashion against a stream of predominantly liquid methane, thereby crystallizing amounts of carbon dioxide from the feed gas stream. Gaseous methane recovered from the CO2 crystallizer is liquefied at a liquefaction exchanger.

Abstract: A process for conducting exothermic equilibrium reactions, especially for the performance of methanol synthesis by heterogeneously catalysed conversion of synthesis gas, is proposed, which enables readjustment and hence optimization of the reaction conditions along the longitudinal coordinate of the reactor. For this purpose, in the process according to the invention, a reactor is used which is divided into a multitude of series-connected reaction cells, each of which comprises a preheating zone, a cooled reaction zone, one or more cooling zones and a deposition zone for condensable reaction products. In this way, the reaction conditions are adjustable to the respective, local composition of the reaction mixture and variable over the reactor length.

Abstract: A reactor for conducting exothermic equilibrium reactions, especially for the performance of methanol synthesis by heterogeneously catalysed conversion of synthesis gas, is proposed, which enables readjustment and hence optimization of the reaction conditions along the longitudinal coordinate of the reactor. For this purpose, in accordance with the invention, the reactor is divided into a multitude of series-connected reaction cells, each of which comprises a preheating zone, a cooled reaction zone, one or more cooling zones and a deposition zone for condensable reaction products. In this way, the reaction conditions are adjustable to the respective, local composition of the reaction mixture and variable over the reactor length.

Abstract: A process for producing synthesis gas using at least a first and a second steam reforming reactor each having at least one reaction stage enabling the circulation of a reaction mixture and at least one heat supply stage enabling the circulation of a heat transfer fluid.

Abstract: Process for producing biomethane from a biogas stream including methane, carbon dioxide and at least one impurity chosen from ammonia, volatile organic compounds, water, sulfur-based impurities (H2S) and siloxanes. A biogas stream is dried, the at least one impurity is at least partially removed by solidification and removal of the impurity. The methane and the carbon dioxide contained in the biogas obtained from the second step are separated so as to produce a biomethane stream and a CO2 stream.

Abstract: The invention relates to a heat exchanger-reactor or heat exchanger including at least three stages with on each stage at least one area of millimetric channels that promote the exchange of heat and at least one distribution area upstream and/or downstream of the area of millimetric channels. The invention is characterized in that: said heat exchanger-reactor or heat exchanger is a component devoid of assembly interfaces between the various stages; and the channels in the area of millimetric channels are separated by walls less than 3 mm thick.

Abstract: The invention relates to an exchanger-reactor comprising at least three stages with at least one stage comprising both: millimetric channels at least partially covered with a catalyst for stimulating a steam reforming reaction, and millimetric channels at least partially covered with a catalyst for stimulating a water gas reaction.