Method for preserving quality of nitric oxide
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United States of America Patent
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Apr 17, 2018
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Sep 4, 2013
filing date -
Mar 27, 2013
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Abstract
A method provide high-purity nitric oxide by preserving quality of the nitric oxide by suitably inhibiting the disproportionation reaction of the nitric oxide that is transported in a state of being stored in a high-pressure gas cylinder, and decreasing the amount of nitrous oxide and nitrogen dioxide that are produced during the transportation. When the nitric oxide is transported in a state of being stored in the high-pressure gas cylinder, the nitric oxide is filled into the high-pressure gas cylinder at a gauge pressure between 1.96 MPa to 3.5 MPa to be stored, and is transported in a state in which the exterior surface temperature of the high-pressure gas cylinder is held in a range from −15° C. to 5° C.
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