Fused salt thermocline heat storage and steam generation integrated device and method

Abstract

The invention discloses a fused salt thermocline heat storage and steam generation integrated device and method. The fused salt thermocline heat storage and steam generation integrated device is mainly composed of a box filled with a porous solid heat storage material, a saturated steam coil pipe, a superheated steam coil pipe, a water inlet pipe, a steam outlet pipe, a steam pocket, a water level controller used for monitoring the water level in the steam pocket and a water pump; the saturated steam coil pipe and the superheated steam coil pipe are installed at the lower end and the upper end inside the box respectively, the lower end of the saturated steam coil pipe stretches out of the box and then is connected with the water inlet pipe, the upper end of the superheated steam coil pipe stretches out of the box and then is connected with the steam outlet pipe, the upper end of the saturated steam coil pipe is connected with one end of the steam pocket, and the lower end of the superheated steam coil pipe is connected with the other end of the steam pocket; the water level controller is connected with the water pump, and the water pump is connected with the water inlet pipe. According to the fused salt thermocline heat storage and steam generation integrated device and method, both a heat storage function and a steam generation function are achieved, the system flexibility of a solar thermal power station is improved, the system device is simplified, and meanwhile the occupied area and the initial investment cost of a system are reduced.

Description

technical field [0001] The invention relates to the technical field of medium and high temperature heat utilization of solar energy, in particular to an integrated device and method for heat storage and steam generation in a molten salt thermocline layer. Background technique [0002] Solar energy has the characteristics of abundant reserves, large coverage, clean and pollution-free, and is a renewable energy with great application prospects. There are mainly two ways of solar energy utilization: photoelectric utilization and photothermal utilization. Solar medium and high temperature heat utilization technology is a strategic new energy technology for sustainable development in my country. Its application system is mainly composed of concentrating system, heat absorption system, heat storage system and heat utilization system. According to different heat utilization systems, it is mainly divided into Implementation methods such as solar hydrogen production, solar steam prod...

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Problems solved by technology

Currently commonly used indirect molten salt steam generators include casing-type steam generators, shell-and-tube steam generators, coil-type steam generators, etc., but these steam generators generally lack heat storage and release functions, and additional storage Thermal system to ensure the stability of the steam generation process, the system stability is not strong and the cost is high

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