Column type molten salt heat absorber device and starting method thereof

Abstract

The invention discloses a column type molten salt heat absorber device and a starting method thereof. The column type molten salt heat absorber device comprises a heat absorber which consists of an ascension pipe, an inlet tank, lower headers, a lower heating box, a heat absorber unit, upper headers, an upper heating box, an outlet tank and a descension pipe, and further comprises a heat absorbercontroling system which is connected with a heliostat field through a bus; a plurality of infrared imagers which are arranged on the upper portion of the heat absorber and is in signal connection withthe heat absorber controlling system; a plurality of first thermocouples which are arranged on the inner surface of the heat absorber and is used for calibration of the infrared imagers; and a plurality of second thermocouples. The ascension pipe, the descension pipe, the inlet tank, the outlet tank and each upper header are each provided with a second thermocouple, and a plurality of second thermocouples are each in signal connection with the heat absorber controlling system and used for acquiring the temperature of molten salt. According to the column type molten salt heat absorber device and the starting method thereof, safe starting of the molten salt heat absorber can be achieved.

Description

technical field [0001] The invention relates to the technical field of heat absorbers, in particular to a molten salt heat absorber device and a starting method thereof. Background technique [0002] Among the various ways of solar thermal utilization, tower solar thermal power generation technology represents the development trend of realizing large-scale utilization of solar energy, and is at the technical commanding heights of solar thermal utilization. The solar tower thermal power generation method has the advantages of high temperature and high system efficiency. The operating parameters are similar to traditional thermal power generation. It has high thermal efficiency and is more suitable for large-scale grid-connected power generation, so it is easy to obtain supporting power generation equipment. At the same time, thanks to the development of cheap heat storage technology, the solar tower thermal power generation system can still maintain normal operation at night ...

AI Technical Summary

Problems solved by technology

[0006] Since the melting point of the working medium of the molten salt heat sink is about 220 degrees Celsius, the molten salt heat transfer medium will solidify at room temperature. Before the sun sets, the molten salt medium inside the heat sink must be emptied, so after the sun rises in the morning, Before the normal start-up of the power station system, the air inside the heat absorber needs to be emptied, the molten salt working medium is injected into the heat absorber, and the preparation work before normal operation involves the preheating of pipelines, heat absorber pipes, storage tanks, etc. And process control and other processes, so the start-up process of molten salt heat sink is very complicated

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