Patent ID: 7674320
Filing Date: 2010-03-09
Classification: C01B,F17C,Y02E,Y10S

Abstract:
1. A method of preparing hydrogen at a hydrogen re-fueling site for adsorption of the hydrogen on a body of hydrogen adsorbent particles contained within an on-vehicle hydrogen storage tank of a vehicle brought to the site, the method comprising: providing hydrogen gas at a temperature above 80K; cooling the hydrogen gas by heat exchange with liquid nitrogen to a temperature of about 80K; further cooling the hydrogen gas to a temperature below about 80K; and circulating a stream of the further cooled hydrogen at a pressure of about 10-30 bar into and from contact with the body of hydrogen adsorbent particles where some hydrogen is adsorbed on the particles from the circulating hydrogen stream and the stream is heated by the body of particles as hydrogen is adsorbed on them.