초록 ▼

A method and device indirectly monitors the purity of nitrogen gas manufactured from air using a permeable membrane to separate air components. A gas flow measuring device inserted in gas conduits downstream from the membrane monitors nitrogen gas purity by measuring normal flow and detects deviatio

A method and device indirectly monitors the purity of nitrogen gas manufactured from air using a permeable membrane to separate air components. A gas flow measuring device inserted in gas conduits downstream from the membrane monitors nitrogen gas purity by measuring normal flow and detects deviation from desired purity levels by changing gas flow caused by manufacturing apparatus malfunctions.

대표청구항 ▼

[ I claim:] [1.] A method for monitoring the purity of gas produced by permeable membrane separation of nitrogen from air comprising:(a) providing an air compressor for introducing pressurized said air to a module containing a permeable membrane means for separating said nitrogen from said air,(b) a

[ I claim:] [1.] A method for monitoring the purity of gas produced by permeable membrane separation of nitrogen from air comprising:(a) providing an air compressor for introducing pressurized said air to a module containing a permeable membrane means for separating said nitrogen from said air,(b) attaching a permeable membrane means for separating said nitrogen from said air permits oxygen carbon dioxide, water vapor, and other gases to pass through said membrane means for separating while said nitrogen enriches to a desired purity by removal of other air components,(c) providing a means for automatic controlling nitrogen pressure in said module,(d) providing a means for automatic controlling temperature in said module,(e) providing a conduit to contain said air and a conduit to contain said nitrogen in said apparatus when necessary until discharge,(f) providing a means for automatically controlling and dispensing desired amounts of said nitrogen and,(g) providing a gas flow measuring means in a conduit downstream from said permeable membrane to measure gas flow and generates a signal.