A method and apparatus for generation of fluorine gas (F2) in situ at the point of use is provided. The portable fluorine generator includes a dilution system disposed within a housing and operable to mix a feed gas comprising fluorine with an inert gas. The portable fluorine generator further includes a plasma reactor unit disposed within the housing and operable to separate fluorine (F2) from the feed gas comprising fluorine.

A soy sauce tank with circulation detection for amino acid nitrogen value control for soy sauce, comprising a tank body, a circulation tube arranged outside the tank body and having an output end and an input end respectively connected to the tank body, a circulation pump arranged in the circulation tube, and an amino acid nitrogen value detection apparatus arranged in the circulation tube. The soy sauce tank of the invention comprises a circulation detection loop, in which the amino acid nitrogen value detection apparatus is configured to measure the amino acid nitrogen value of the soy sauce. In the soy sauce tank the soy sauce is thoroughly mixed through multiple circulations, during which its amino acid nitrogen value is regulated and stabilized eventually, thereby facilitating automatic blending and improving the production efficiency of the soy sauce.

A dip-conduit purification apparatus (102) comprises a purification line comprising a plurality of serially coupled purification conduits (124, 126, 128), each of the plurality of purification conduits (124, 126, 128) having an inlet at a first distal end thereof in fluid communication with an outlet at a second distal end thereof.

A soy sauce tank with circulation detection for amino acid nitrogen value control for soy sauce, comprising a tank body, a circulation tube arranged outside the tank body and having an output end and an input end respectively connected to the tank body, a circulation pump arranged in the circulation tube, and an amino acid nitrogen value detection apparatus arranged in the circulation tube. The soy sauce tank of the invention comprises a circulation detection loop, in which the amino acid nitrogen value detection apparatus is configured to measure the amino acid nitrogen value of the soy sauce. In the soy sauce tank the soy sauce is thoroughly mixed through multiple circulations, during which its amino acid nitrogen value is regulated and stabilized eventually, thereby facilitating automatic blending and improving the production efficiency of the soy sauce.

A method and apparatus for generation of fluorine gas (F2) in situ at the point of use is provided. The portable fluorine generator includes a dilution system disposed within a housing and operable to mix a feed gas comprising fluorine with an inert gas. The portable fluorine generator further includes a plasma reactor unit disposed within the housing and operable to separate fluorine (F2) from the feed gas comprising fluorine.

Disclosed herein are methods and systems to isolate nitrogen from a mixture of gases. In an embodiment, a method of isolating nitrogen from a gaseous mixture involves contacting the gaseous mixture with a superparamagnetic catalyst to form a reaction mixture, and exposing the reaction mixture to a fluctuating magnetic field at ambient conditions.

A method and apparatus for generation of fluorine gas (F.sub.2) in situ at the point of use is provided. The portable fluorine generator includes a dilution system disposed within a housing and operable to mix a feed gas comprising fluorine with an inert gas. The portable fluorine generator further includes a plasma reactor unit disposed within the housing and operable to separate fluorine from the feed gas comprising fluorine.

Disclosed herein are methods and systems to isolate nitrogen from a mixture of gases. In an embodiment, a method of isolating nitrogen from a gaseous mixture involves contacting the gaseous mixture with a superparamagnetic catalyst to form a reaction mixture, and exposing the reaction mixture to a fluctuating magnetic field at ambient conditions.

A system is provided for carbon dioxide (CO.sub.2) emission recovery. The system includes a methanization reactor. The methanization reactor is configured to receive CO.sub.2 separated from one or more off gases of a brake manufacturing process, convert the CO.sub.2 and supplied hydrogen (H.sub.2) via methanization to produce methane (CH.sub.4); and supply the produced CH.sub.4 to at least one of a carbon/carbon (C/C) preform production process or another system for heat generation.

A cryogenic fluid purification device comprising: a first container defining an interior region; a second container defining an interior region in fluid communication with the interior region of the first container; and a cryogenic fluid in contact with an exterior of the second container.