Efficiency closed circuit plants

Another application of hydrocyclones is for solid-solid separation by particle size. As the grade efficiency of a cyclone increases with particle size, it can be used to split the feed solids into fine and coarse fractions. This may be a process requirement, by which coarse and fine solids are separated to follow different routes in the plant, such as, for example, in closed circuit wet... 

PHENTX, SUPERPHENIX and PFR are so-called pool reactors, whereas the other three projects are loop reactors. In a pool reactor, the whole primary heat transfer system including main pumps and intermediate heat exchangers is integrated into the reactor vessel (pool), while the loop reactors have parallel primary sodium heat transfer circuits (loops) with the main heat transfer components external to the reactor vessel. The secondary heat transfer system, installed between primary system and water/steam system for safety reasons, is practically identical in both cases. It also consists of three parallel circuits. Live steam conditions and the achievable efficiency are very similar in all plants 500°C, 165 bar, 40%. These are close to the conditions of coal-fired stations. 

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