Filed in May 4, 1976, this patent covers an invention designed to provide a simple, inexpensive and efficient system for purifying and storing hydrogen wherein little hydrogen is wasted during the process of storing the hydrogen.
The diagram shows a hydrogen purification system in which a mixture of hydrogen and impurities is applied to a container holding hydride forming material capable of adsorbing hydrogen and impurities, of releasing hydrogen at one temperature and pressure, and of releasing the impurities at another temperature and pressure. After hydrogen and impurities are adsorbed by the hydride forming material in the container, the temperature and pressure in the container are controlled to enable release of the hydrogen from the material but to prevent release of at least certain of the impurities.
The released hydrogen is then delivered to a utilization unit such as a second container or hydrogen fueled engine. The hydrogen delivered to the utilization unit is substantially purged of certain unwanted impurities.