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US 9,881,700 B2Granted
Molten salt nuclear reactor
AssigneeOttawa Valley Research Associates Ltd.
InventorDavid Leblanc
Life of this patent
Estimating the term…
Abstract
A Single Fluid Reactor with an inner zone that includes a solid neutron moderator, which can have through holes defined therein. This solid neutron moderator can have a relatively small diameter, which can range, in some embodiments, from less than one meter to about 1.5 meter. The solid neutron moderator effectively creates an inner zone with a neutron profile that is far more thermalized than if the solid neutron moderator were absent. The surrounding layer of salt surrounding this inner zone has a much harder neutron spectrum.
Claims18
A single fluid molten salt nuclear reactor comprising:
- a vessel having a central region and a vessel wall, a vessel height and a vessel width;
- a support structure;
- a neutron moderator secured to the support structure and located in the central region of the vessel, the neutron moderator having a neutron moderator height and a neutron moderator width, the vessel height being greater than the neutron moderator height by a factor comprised between two and four, the vessel width being greater than the neutron moderator width by a factor comprised between two and four such that an under-moderated zone is defined between the neutron moderator and the vessel wall, the neutron moderator having at least one through hole defined therein that is in fluid communication with the under-moderated zone;
- and
- a pump to circulate a molten salt in the vessel, the support structure, the neutron moderator, and the pump being arranged to circulate the molten salt through the at least one through hole of the neutron moderator and the under-moderated zone between the neutron moderator and the vessel wall;
- wherein a space between the neutron moderator and the vessel wall is free of any neutron reflector.
3 more elements
A single fluid molten salt nuclear reactor comprising:
- a vessel having a central region and a vessel wall, a vessel height and a vessel width;
- two opposite walls disposed at opposite ends of the vessel;
- a support structure;
- a neutron moderator secured to the support structure and located in the central region of the vessel, the neutron moderator having a neutron moderator height and a neutron moderator width, the vessel height being greater than the neutron moderator height by a factor comprised between two and four, the vessel width being greater than the neutron moderator width by a factor comprised between two and four such that an under-moderated zone is defined between the neutron moderator and the vessel wall, the neutron moderator having at least one through hole defined therein that is in fluid communication with the under-moderated zone;
- a molten salt inlet formed on one of the two opposite walls;
- a molten outlet formed on the other of the two opposite walls;
- and
- a pump operationally connected to the molten salt inlet and to the molten salt outlet, the pump to circulate a molten salt in the vessel, through the at least one through hole of the neutron moderator and the under-moderated zone between the neutron moderator and the vessel wall;
- wherein a space between the neutron moderator and the vessel wall is free of any neutron reflector.
6 more elements
A single fluid molten salt nuclear reactor comprising:
- a vessel having a central region and a vessel wall, the vessel wall being free of any graphite neutron reflector, the vessel having a vessel height and a vessel width;
- a neutron moderator positioned a central region of the vessel, the neutron moderator having a neutron moderator height and a neutron moderator width, the vessel height being greater than the neutron moderator height by a factor comprised between two and four, the vessel width being greater than the neutron moderator width by a factor comprised between two and four such that an under-moderated zone is defined between the neutron moderator and the vessel wall, the neutron moderator having at least one through hole defined therein that is in fluid communication with the under-moderated zone;
- and
- a pump to circulate a molten salt in the vessel, the neutron moderator and the pump being arranged to circulate the molten salt through the at least one through hole of the neutron moderator and the under-moderated zone between the neutron moderator and the vessel wall such that the molten salt in the under-moderated zone reduces a neutron flux at the vessel wall to reduce damage to the vessel wall;
- wherein a space between the neutron moderator and the vessel wall is free of any neutron reflector.
2 more elements
Dependencies are inferred from the claim text.