A method is disclosed for controlling the generation of gas occurring in a generator via a filtering membrane (M). The filtering membrane (M) is fed at the entry with a gas pushed by a compressor (C), and is capable of separating gaseous components of the gas at the exit. The method has the steps of detecting the gas pressure at a detection point (SP1) at the membrane entry and/or at the exit (M); adjusting the regime of the compressor (C) so that the detected pressure is maintained at a reference pressure, here called Pref]. Advantages: less wear out for the compressor and extended life cycle.

Fuel tank inerting systems are provided. The systems include a fuel tank, an air source arranged to supply air into a reactive flow path, a catalytic reactor having a plurality of sub-reactors along the flow path, and a heat exchanger. The sub-reactors are arranged relative to the heat exchanger such that the flow path passes through at least a portion of the heat exchanger between two sub-reactors along the flow path. At least one fuel injector is arranged relative to at least one sub-reactor. The fuel injector is configured to inject fuel into the flow path at at least one of upstream of and in the respective at least one sub-reactor to generate a fuel-air mixture. A fuel tank ullage supply line fluidly connects the flow path to the fuel tank to supply an inert gas to a ullage of the fuel tank.

A system and method for providing inerting gas to a protected space is disclosed. The system includes an air separation module that includes an air inlet, a membrane with a permeability differential between oxygen and nitrogen, a nitrogen-enriched air outlet, and an oxygen-enriched air outlet. The system also includes an air flow path between an air source and the air separation module inlet, and an inerting gas flow path between the air separation module nitrogen-enriched air outlet and the protected space.

A membrane modification method for improving liquid membrane separation of carbon dioxide (CO.sub.2) includes grafting an organic substance containing an amine group on a porous membrane material, and loading water into pore channels of the porous membrane material to prepare a supported liquid membrane for a gas mixture separation experiment of CO.sub.2. In the method, the amine group is introduced through chemical grafting to make the water being alkaline when used as membrane liquid. Compared with an alkaline solution as the membrane liquid, the method can avoid the loss of active alkaline substances and increase the permeation flux of CO.sub.2.

An integrated wellhead device for filtering injected and produced gases is provided by the present disclosure, comprising a horizontal tank body that is internally provided with an injected gas filtering system and a produced gas filtering system, wherein the injected gas filtering system is internally provided with an oxygen removal chamber, the gas inlet of the injected gas filtering system is connected with an injected high-pressure gas source, and the gas outlet of the injected gas filtering system is connected with a gas injection well casing of Christmas tree, the produced gas filtering system is internally equipped with an oxygen removal chamber, a sulfur removal chamber and a carbon dioxide removal chamber, the gas inlet of the produced gas filtering system is connected with a gas production tubing of the Christmas tree, and the gas outlet of the produced gas filtering system is connected with a produced gas transmission pipe.

Disclosed is a method of manufacturing an air separation module (ASM) of a nitrogen generation system (NGS), the method providing: determining an at least partially nonlinear shape between opposing ends of a canister, the canister being configured to fit within an installation envelope for the ASM in the NGS and configured to have installed therein an air separating membrane; and additively manufacturing the canister.

A system is disclosed for providing inerting gas to a protected space, and also providing electrical power. The system includes an electrochemical cell comprising a cathode and an anode separated by a separator comprising a proton transfer medium. Inerting gas is produced at the cathode. A fuel source comprising methanol or formaldehyde or ethanol and a water source are each in controllable operative fluid communication with the anode. A controller is configured to alternatively operate the system in a first mode of operation where water is directed to the anode fluid flow path inlet and electric power is directed from a power source to the electrochemical cell, and in a second mode of operation in which the fuel is directed from the fuel source to the anode fluid flow path inlet and electric power is directed from the electrochemical cell to the power sink.

A vacuum system for use with a deoxygenator system includes a housing, a movable assembly positioned within the housing, and a biasing mechanism coupling the movable assembly to the housing. The movable assembly is movable between a first position and a second position within the housing to form a low pressure area between the housing and the movable assembly. A control system including at least one pressure source is arranged in fluid communication with the low pressure area. The control system is operable to selectively communicate fluid from the at least one pressure source to the housing to form the low pressure area.

In a hydrocarbon-fed steam methane reformer hydrogen-production process and system, carbon dioxide is recovered in a pre-combustion context, and optionally additional amounts of carbon dioxide are recovered in a post-combustion carbon dioxide removal, to provide the improved carbon dioxide recovery or capture disclosed herein.

A module for fueling a hydrogen cell is provided including a hydrogen production device, a hydrogen purification device and a hydrogen cell power generation system. The hydrogen production device comprises: a housing, a cavity being formed in the housing, and a first opening, a second opening and a third opening which all communicate with the cavity being formed in the housing; a plasma generating unit contained in the cavity and comprising a first electrode and a second electrode, the first electrode being close to the first opening, and the second electrode being close to the second opening; a voltage supply unit, a power supply end of the voltage supply unit being electrically connected to the first electrode and the second electrode, and a potential difference exists between the first electrode and the second electrode to generate plasma; a feeding unit communicating with the first opening; and an exhaust unit.