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US 12,570,523 B2Granted
Process for producing a hydrogen-rich gas stream from aluminium waste
AssigneeBefesa Aluminio, S.L.
InventorsJessica Montero Garcia, Jorge Romero Polanco, Carlos Ruiz De Veye
Life of this patent
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Abstract
A process for the obtention of a hydrogen-rich gas stream from aluminium waste by obtaining a process water resulting from contacting aluminium salt slag with tap water, adding the process water of the previous step to an aluminium waste in a solution, and the hydrolysis of that solution to obtain the gas stream. The process is capable to obtain a yield of reaction close to 100% in higher reaction times.
Claims8
A process for obtaining a hydrogen-rich gas stream from aluminium waste comprising:
- a) obtaining a process water resulting from contacting aluminium salt slag with tap water in a relation of 1:2 by weight during a time of reaction of 60-120 minutes,
- b) adding the process water from step a) to an aluminium waste consisting of particles of 1 mm size or less, in a solution, and
- c) conducting a hydrolysis of the solution obtained in step b) to obtain the hydrogen-rich gas stream.
Dependencies are inferred from the claim text.