Nuclear engineering plant and method for operating a nuclear engineering plant

Abstract

A degassing plant (2) for reactor coolants (R) has a degasser column (6) which is coupled to the primary cooling circuit of a pressurized water reactor and through which reactor coolant (R) flows. The degassing plant (2) furthermore comprises a coolant evaporator (54) with a first heat exchanger (52) and a strip steam condenser (34) with a second heat exchanger (44), wherein a partial flow of thereactor coolant (R) flows through the heat exchanger (52) of the coolant evaporator (54) on the secondary side, and wherein the heat exchanger (44) of the strip steam condenser (34) is switched, on the primary side, in a vapour and gas outlet line (32) which is connected to the degasser column (6). The degassing plant (2) is intended to be configured such that, with as simple a design as possibleand taking into consideration relevant safety procedures, a particularly effective and at the same time energy-efficient separation of gasses, which are dissolved in the reactor coolant (R) and cannot be condensed, is made possible, wherein the thermal load of the assigned nuclear intermediate cooling system is furthermore intended to be kept as low as possible. To this end it is provided that the heat exchanger (52) of the coolant evaporator (54) is switched in a heat-pump circuit (58) on the primary side, which heat-pump circuit is coupled to the heat exchanger (44) of the strip steam condenser (34) with respect to the heat flux, which is established during plant operation, such that the heat liberated in the strip steam condensation is transferred at least partially to the reactor coolant (R), which flows through the coolant evaporator (54), and thus leads to its evaporation.

Description

technical field [0001] The invention relates to a degassing device for reactor coolant having a degassing column through which the reactor coolant can flow, wherein the degassing device comprises a coolant evaporator with a first heat exchanger and a coolant evaporator with a second The stripdampfkondensator of the two heat exchangers; where the heat exchanger of the coolant evaporator is passed by a split flow of the reactor coolant on the secondary side; and where the heat exchanger of the stripdampfkondensator is connected on the primary side into the steam and gas discharge piping connected to the degassing tower. Furthermore, the invention relates to a nuclear technology installation with a degassing device for reactor coolant and a method for operating such a nuclear technology installation. Background technique [0002] PWR coolants contain dissolved, noncondensable gases generated by operation such as hydrogen, oxygen, nitrogen and various radioactive noble gases su...

AI Technical Summary

Problems solved by technology

With the high auxiliary cooling water temperature this has the result that the conventional design and dimensioning of the intercooling system adapted to the low auxiliary cooling water temperature is no longer sufficient

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