A corrugated membrane reactor device for hydrogen isotope exchange

Abstract

The invention discloses a corrugated membrane reactor device for hydrogen isotope exchange. The right end of the palladium alloy tube is connected to an external sleeve through a flange, and the left end of the palladium alloy tube is connected to a thermocouple sleeve, which is mechanically welded. Connect and seal; above the thermocouple casing, a branch pipe II is provided as the tritium-containing impurity gas Q 2 The inlet of O; there is a branch pipe III under the outer casing as the replacement gas H 2 Inlet; there is a branch pipe IV above the outer casing as the product gas Q 2 outlet; the right end of the palladium alloy tube is connected with branch pipe I as tail gas H 2 O's exit. The palladium alloy tube is filled with a catalyst as a catalytic exchange reaction area, and the reaction occurs:. The invention utilizes the hydrogen isotope exchange reaction to replace deuterium and tritium in the combined state and recovers them. The corrugated palladium alloy tube has a larger surface area than the traditional palladium alloy straight tube with the same appearance size, ensuring Q 2 The fast penetration and operational stability, the internal loading mode reduces the difficulty of catalyst loading, and can obtain a higher decontamination factor, which is suitable for the treatment of ash exhaust gas containing tritium impurities in fusion reactors and other occasions.

Description

technical field [0001] The invention belongs to the field of treatment of tritium-containing impurity gas in fusion reactor ash exhaust gas, and in particular relates to a corrugated membrane reactor device for hydrogen isotope exchange. Background technique [0002] The deuterium and tritium in the fusion reactor exhaust gas are mainly in the form of Q 2 (elementary state), hydrocarbons and water (combined state). For combined tritium, membrane reactors are mainly used internationally for recovery. The principle is: the catalyst is packed inside the palladium alloy tube, the tritium-containing impurity gas flows into the reactor from the inside of the tube, and the H 2 Enter the reactor from the outside of the tube. h 2 After penetrating into the inner side of the palladium alloy tube, it undergoes an isotope exchange reaction with the tritium-containing impurity gas under the action of the catalyst, and the obtained tritium-containing Q 2 Permeate to the outside of th...

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Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art that the membrane reactor is not conducive to the mass transfer and permeation of hydrogen, the catalyst loading is difficult, the loading amount is small, and the decontamination factor is limited, the present invention provides a corrugated membrane reactor for hydrogen isotope exchange device

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