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Methods and Systems for the Production of Hydrogen

Idaho National Laboratory

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Technology Marketing Summary

INL has developed a novel process for producing hydrogen using a reduced outlet temperature of Very High Temperature Gas Cooled Reactor. This process uses a combination of hydrogen recycle, a molten salt or helium, and a supercritical CO2 cycle. This method preheats the feed, reduces pumping power in the primary side and/or thermal transmission piping, and converts the power unit, achieving a high electrical conversion efficiency of 45%. This process reduces the operating outlet temperature of Very High Temperature Reactor (VHTR) from 900 C to 700 C, and can thus reduce the need for high temperature structural materials for the VHTR and thermal transmission piping and heat exchangers.

Description

INL has developed a novel process for producing hydrogen using a reduced outlet temperature of Very High Temperature Gas Cooled Reactor. This process uses a combination of hydrogen recycle, a molten salt or helium, and a supercritical CO2 cycle. This method preheats the feed, reduces pumping power in the primary side and/or thermal transmission piping, and converts the power unit, achieving a high electrical conversion efficiency of 45%. This process reduces the operating outlet temperature of Very High Temperature Reactor (VHTR) from 900 C to 700 C, and can thus reduce the need for high temperature structural materials for the VHTR and thermal transmission piping and heat exchangers.

Benefits

Reduces the operating temperature and material(s) requirement for hydrogen-generation process that utilizes high-quality heat resulting from industrial and/or very high temperature nuclear reactors.  

Applications and Industries

Next generation nuclear power plants (VHTR), oil & gas plants, manufacturing plants; Oil & gas industry, manufacturing industry.

More Information

Patent application made available

Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 8,132,410
Patent
8,132,410
Methods and systems for the production of hydrogen
Methods and systems are disclosed for the production of hydrogen and the use of high-temperature heat sources in energy conversion. In one embodiment, a primary loop may include a nuclear reactor utilizing a molten salt or helium as a coolant. The nuclear reactor may provide heat energy to a power generation loop for production of electrical energy. For example, a supercritical carbon dioxide fluid may be heated by the nuclear reactor via the molten salt and then expanded in a turbine to drive a generator. An intermediate heat exchange loop may also be thermally coupled with the primary loop and provide heat energy to one or more hydrogen production facilities. A portion of the hydrogen produced by the hydrogen production facility may be diverted to a combustor to elevate the temperature of water being split into hydrogen and oxygen by the hydrogen production facility.
Idaho National Laboratory 03/13/2012
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
BA-233DevelopmentAvailable04/14/201104/14/2011

Contact INL About This Technology

To: Ryan Bills<Ryan.Bills@inl.gov>