STORAGE AND SUPPLY SYSTEM OF LIQUEFIED AND CONDENSED HYDROGEN
A hydrogen storage and supply system comprises a storage vessel containing a liquefied or condensed hydrogen in sufficient contact with a catalyst inside the vessel. The storage vessel comprises an inner tank, an outer jacket, a vacuum insulation between said inner tank and outer jacket, and a catalyst disposed inside the inner tank, wherein the catalyst is capable of converting para-hydrogen to ortho-hydrogen at temperatures between about 20° K to about 80° K. A process of storing and supplying hydrogen using the system is also disclosed.
1 . A liquefied or condensed hydrogen storage device comprising an inner tank, an outer jacket, a vacuum insulation between said inner tank and outer jacket, and a catalyst disposed inside said inner tank; wherein said catalyst is capable of converting para-hydrogen to ortho-hydrogen at temperatures between about 20° K and about 80° K.
2 . A liquefied or condensed hydrogen storage device as set forth in claim 1 , wherein said inner tank and outer jacket are substantially cylindrical in shape.
3 . A liquefied or condensed hydrogen storage device as set forth in claim 1 , further comprising a boil off valve connected to the inner tank that limits the pressure inside said inner tank to under about 60 bar.
4 . A liquefied or condensed hydrogen storage device as set forth in claim 1 , wherein said catalyst is disposed as either a coating on at least part of the interior surface of said inner tank or a microporous solid inside said inner tank.
5 . A liquefied or condensed hydrogen storage device as set forth in claim 1 , wherein said catalyst comprises at least one of iron oxide, platinum, rhenium, ruthenium, rhodium phosphine complexes, Group IV-VI transition metal nitrides, samarium copper, potassium-triphenylene complex, titanium carbide, manganese carbides, chromia-alumina, molybdenum-alumina, sodium hydride, chromium potassium sulfate, copper-nickel zeolite, cobalt zeolite, manganese oxide, and carbonaceous substances.
6 . A liquefied or condensed hydrogen storage device as set forth in claim 1 , wherein said catalyst comprises iron oxide.
7 . A liquefied or condensed hydrogen storage device as set forth in claim 1 , wherein said vacuum insulation comprises multilayer vacuum super insulation.
8 . A liquefied or condensed hydrogen storage device as set forth in claim 1 , wherein said inner tank comprises metal lined composite wrap material.
9 . A liquefied or condensed hydrogen storage device as set forth in claim 8 , wherein said metal comprises aluminum or aluminum alloy and said composite wrap comprises carbon fiber, glass fiber or aramide fiber based composite.
10 . A hydrogen supply system comprising:
a storage vessel comprising an inner tank, an outer jacket, a vacuum insulation between said inner tank and outer jacket, and a catalyst disposed inside said inner tank, wherein said catalyst is capable of converting para-hydrogen to ortho-hydrogen at temperatures between about 20° K and about 80° K;
a liquefied or condensed hydrogen having sufficient contact with said catalyst inside said inner tank; and
a boil off valve connected to said inner tank to limit the pressure inside said inner tank to less than about 60 bar.
11 . A hydrogen supply system as set forth in claim 10 , wherein said inner tank and outer jacket are substantially cylindrical in shape.
12 . A hydrogen supply system as set forth in claim 10 , wherein said inner tank comprises metal lined fiber composite wrap.
13 . A hydrogen supply system as set forth in claim 12 , wherein said metal comprises aluminum or aluminum alloy and said fiber comprises carbon fiber, glass fiber or aramide fiber.
14 . A hydrogen supply system as set forth in claim 10 , wherein said liquefied or condensed hydrogen is at least 99.9% pure, and stored at a temperature between about 20° K and about 80° K.
15 . A hydrogen supply system as set forth in claim 10 , wherein said pressure inside said inner tank is between 4 bar and 30 bar.
16 . A hydrogen supply system as set forth in claim 10 , wherein said catalyst is either a coating on at least part of the interior surface of said inner tank or a microporous solid disposed inside said inner tank.
17 . A hydrogen supply system as set forth in claim 10 , wherein said catalyst comprises at least one of iron oxide, platinum, rhenium, ruthenium, rhodium phosphine complexes, Group IV-VI transition metal nitrides, samarium copper, potassium-triphenylene complex, titanium carbide, manganese carbides, chromia-alumina, molybdenum-alumina, sodium hydride, chromium potassium sulfate, copper-nickel zeolite, cobalt zeolite, manganese oxide, and carbonaceous substances.
18 . A hydrogen supply system as set forth in claim 10 , wherein said catalyst comprises iron oxide.
19 . A hydrogen supply system as set forth in claim 10 , wherein the hydrogen filling level inside said inner tank is between about 5 and about 60 grams per liter.
20 . A hydrogen supply system as set forth in claim 19 , wherein said filling level is between about 30 and 60 gram per liter.
21 . A process of storing liquefied or condensed hydrogen comprising:
providing a storage vessel comprising an inner tank, an outer jacket, plurality of layered vacuum insulation between said inner tank and outer jacket, a boil off valve connected to said inner tank, and a para-hydrogen to ortho-hydrogen conversion catalyst disposed inside said inner tank;
filling said inner tank with a liquefied hydrogen to about 5-60 grams per liter at temperature between about 20° K and about 60° K; and
venting hydrogen through said boil off valve when the pressure inside the inner tank reaches a pre-set value; wherein the vented hydrogen is not recycled back into liquid hydrogen.
22 . A process of storing liquefied or condensed hydrogen as set forth in claim 21 , wherein said inner tank and outer jacket are substantially cylindrical in shape.
23 . A process of storing liquefied or condensed hydrogen as set forth in claim 21 , wherein said catalyst is either a coating on at least part of the interior surface of said inner tank or a microporous solid disposed inside said inner tank.
24 . A process of storing liquefied or condensed hydrogen as set forth in claim 21 , wherein said catalyst comprises at least one of iron oxide, platinum, rhenium, ruthenium, rhodium phosphine complexes, Group IV-VI transition metal nitrides, samarium copper, potassium-triphenylene complex, titanium carbide, manganese carbides, chromia-alumina, molybdenum-alumina, sodium hydride, chromium potassium sulfate, copper-nickel zeolite, cobalt zeolite, manganese oxide, and carbonaceous substances.
25 . A process of storing liquefied or condensed hydrogen as set forth in claim 21 , wherein the pressure inside said inner tank is controlled between about 4 bar to about 30 bar through said boil off valve.
26 . A process of storing liquefied or condensed hydrogen as set forth in claim 21 , wherein said pre-set value is between about 4 bar and about 30 bar.
27 . A process of storing liquefied or condensed hydrogen as set forth in claim 21 , wherein said liquefied hydrogen consists essentially of para-hydrogen.