Heat recovery system and method for low-load operation stage of high-temperature gas cooled reactor

Abstract

The invention provides a heat recovery system and method for a low-load operation stage of a high-temperature gas cooled reactor, and belongs to the technical field of nuclear power. The system comprises: a steam generator; a steam-water separator, wherein an inlet of the steam-water separator is communicated with an outlet of the steam generator, a top outlet of the steam-water separator is communicated with inlets of a condenser and a deaerator through a tee joint, and a bottom outlet of the steam-water separator is communicated with inlets of the condenser and the deaerator through a tee joint; the condenser, wherein an outlet of the condenser is communicated with the deaerator; and the deaerator. According to the heat recovery system for the low-load operation stage of the high-temperature gas cooled reactor, in the low-load operation stage of the high-temperature gas cooled reactor, drained water and steam in the steam-water separator are recovered into the deaerator, heat generated by the reactor is recycled, the use amount of auxiliary steam needing to be provided for the deaerator by an electric boiler is reduced, energy recycling is achieved, and meanwhile a large amount of electric charge is saved.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a heat recovery system and method for a low-load operation stage of a high-temperature gas-cooled reactor. Background technique [0002] The high-temperature gas-cooled reactor runs at low load for about 4 months during the commissioning stage, and the subsequent unit runs at low load for about 8 days each time it is started. When the unit is running at low load, the feedwater flow rate is 130t / h, and the temperature is 160°C. At this time, the secondary extraction parameters are low, and the feedwater in the deaerator cannot be heated to the required temperature. At this time, it is mainly heated by the auxiliary steam generated by the electric boiler, and the electricity consumption of the electric boiler in the commissioning stage alone is about 50 million yuan or more. [0003] On the other hand, the feed water absorbs the heat generated by the reactor in the steam gen...

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the energy is not effectively utilized when the high-temperature gas-cooled reactor in the prior art is operated in the existing mode, resulting in a large amount of energy waste, thereby providing a high-temperature gas-cooled reactor Heat recovery system and method in low-load operation stage

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