Accelerator-driven lead-bismuth cooled subcritical traveling wave reactor

Abstract

The invention discloses an accelerator driven lead bismuth cooling subcritical traveling wave reactor. The accelerator driven lead bismuth cooling subcritical traveling wave reactor comprises a mobile neutron source target, a reactor core fuel, a reactor inner component, main heat exchangers, a reactor top cover, a reactor container and a main pump. An external source neutron is provided via the mobile neutron source target; the reactor is started and ignited; the traveling wave type reactor is driven to run under the subcritical state, and a combustion wave and a proliferation wave are continued; meanwhile, the heat of the reactor core is taken out by a lead bismuth cooling agent with good chemical inertness so as to guarantee the safety of the reactor, so that the requirement for high-enrichment-degree fissile nuclear fuels for realizing critical start by the critical traveling wave reactor is prevented, the requirements for reactor core materials and high fuel consumption by the traveling of the proliferation wave are lowered, and the practical feasibility, reliability and safety of the traveling wave reactor are improved effectively.

Description

technical field [0001] The invention belongs to the field of advanced fast neutron reactors, in particular to an accelerator-driven lead-bismuth cooled subcritical traveling wave reactor. Background technique [0002] Traveling wave reactor is a new type of deep burn-up fission reactor that uses natural nuclides or spent fuel as fuel, and the breeding of fertile nuclides and the incineration of fissile nuclides move in traveling waves. The traveling wave propagates in the fuel at a speed of several centimeters per year in the manner of "breeding wave goes forward, burning wave follows", and one charge can run continuously for decades. [0003] At present, the design of TWR is sodium-cooled critical TWR, and the core fuel is divided into waste area, critical area (combustion area, breeding area), and new fuel area. The sodium-cooled critical traveling wave reactor has the following technical shortcomings and deficiencies: [0004] 1. When the traveling wave reactor is initi...

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Problems solved by technology

[0006] 3. In order to maintain the propagating wave and burning wave, the fuel consumption of the traveling wave reactor is required to be higher than 40%, which makes the fuel and cladding material requirements far exceed the current limit standard of less than 20% of the fuel consumption (Yang Bo, Shen Tujun, Tang Chuntao , Feasibility Study and Prospect of Traveling Wave Reactor Technology, Proceedings of the 13th Academic Conference on Numerical Computation and Particle Transport of Reactors and the 2010 Conference on Reactor Physics), which reduced the practical feasibility of traveling wave reactors;

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