Container inerting
AssigneePraxair Technology, Inc.
InventorRavi Prasad
Life of this patent
Estimating the term…
Abstract
A process for inerting an interior of a container, the process comprising: (a) introducing an inert fluid rich stream into the interior of the container, the concentration of inert fluid in the inert fluid rich stream inert fluid being greater than the inert fluid concentration in the interior of the container; (b) increasing the concentration of inert fluid in the inert fluid rich stream during its introduction into the interior of the container; and (c) withdrawing or purging a waste gas stream containing at least one impurity and inert fluid from the interior of the container.
Claims13
A process for inerting an interior of a container, said process comprising:
- (a) steadily introducing an inert fluid rich stream into said interior of said container, the concentration of inert fluid in said inert fluid rich stream being greater than the inert fluid concentration in said interior of said container;
- (b) increasing the concentration of inert fluid in said inert fluid rich stream during its introduction into said container;
- and
- (c) withdrawing or purging a waste gas stream containing at least one impurity and inert gas from said interior of said container.
A process for purging oxygen from an interior of a container, said process comprising steps of:
- (a) introducing an inert gas rich stream into said interior of said container, the concentration of inert gas in said inert gas rich stream being greater than 80% by volume but less than or equal to about 99.9% by volume;
- (b) increasing the concentration of inert gas in said inert gas rich stream to greater than about 93% by volume, upon reducing the concentration of oxygen in said interior of the container to about 1% to about 10% by volume based on the total gas volume in said interior of the container;
- (c) feeding the resulting inert gas rich stream containing the increased concentration of inert gas into said interior of the container until the concentration of oxygen in the interior of the container is less than or equal to 7%;
- and
- (d) withdrawing or purging a waste gas stream containing oxygen and inert gas from said interior of said container during the introduction of said inert gas rich stream.
Dependencies are inferred from the claim text.