Method of storing and supplying hydrogen to a pipeline
DC CAFCFirst Claim
1. A method of storing and supplying a gaseous hydrogen product to a pipeline under a product purity specification, having a pre-specifed hydrogen purity and an impurity level of impurities comprising carbon dioxide and water vapor, said method comprising:
- compressing a hydrogen steam made up of gaseous hydrogen to form a compressed hydrogen stream;
introducing the compressed hydrogen stream into a salt cavern for storage of the gaseous hydrogen;
recovering a crude hydrogen stream from the salt cavern;
purifying the crude hydrogen stream by sufficiently removing at least the carbon dioxide and the water vapor from the crude hydrogen stream to at least in part produce a hydrogen product steam having the impurity level of the carbon dioxide and water vapor at or below the product purity specification; and
supplying the gaseous hydrogen product to the pipeline by introducing said hydrogen product stream into said pipeline.
1 Assignment
Litigations
3 Petitions
Accused Products
Abstract
A method of storing and supplying a gaseous hydrogen product to a pipeline under a product purity specification in which a hydrogen stream made up of gaseous hydrogen is compressed to form a compressed hydrogen stream and introduced into a salt cavern for storage. A crude hydrogen stream, contaminated from storage in the salt cavern is recovered and purified by sufficiently removing at least carbon dioxide and water vapor to produce a hydrogen product stream having an impurity level at or below the product purity specification. The hydrogen product stream is supplied back to the pipeline. Alternatively, during periods of low demand, hydrogen produced by a production facility is both purified and supplied to the pipeline and stored in the salt cavern. During high demand period, both the output of the production facility and hydrogen retrieved from the salt cavern are purified and supplied to the pipeline.
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Citations
8 Claims
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1. A method of storing and supplying a gaseous hydrogen product to a pipeline under a product purity specification, having a pre-specifed hydrogen purity and an impurity level of impurities comprising carbon dioxide and water vapor, said method comprising:
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compressing a hydrogen steam made up of gaseous hydrogen to form a compressed hydrogen stream; introducing the compressed hydrogen stream into a salt cavern for storage of the gaseous hydrogen; recovering a crude hydrogen stream from the salt cavern; purifying the crude hydrogen stream by sufficiently removing at least the carbon dioxide and the water vapor from the crude hydrogen stream to at least in part produce a hydrogen product steam having the impurity level of the carbon dioxide and water vapor at or below the product purity specification; and supplying the gaseous hydrogen product to the pipeline by introducing said hydrogen product stream into said pipeline. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification