Intermittent fluidization thermal energy and chemical energy storage and release reaction device and working method

Abstract

The invention discloses an intermittent fluidization thermal energy and chemical energy storage and release reaction device and a working method. The device comprises a fluidization system, a heat exchange system and a gas-solid separation system. The fluidization system is located at the bottom of the reaction device. The heat exchange system is located in the middle of the reaction device. The gas-solid separation system is located at the top of the reaction device. The fluidization system is connected with the heat exchange system through an internal horizontal baffle. The heat exchange system is connected with the gas-solid separation system through a cyclone separator. The gas-solid separation system is connected with the fluidization system through an external material guide pipe. According to the intermittent fluidization thermal energy and chemical energy storage and release reaction device and the working method, a thermochemistry energy storage mode is adopted, and the thermal conversion efficiency is high; backmixing of reactants is reduced through an intermittent reaction; the reaction is more sufficient through secondary gas inlet; the energy storage process and the energy release process are conducted independently, and operation is easy; and the gas-solid separation system is arranged internally, so that the separated gas has the advantages of being purer and easy to recycle. The intermittent fluidization thermal energy and chemical energy storage and release reaction device and the working method can be used for occasions of solar-powered Rankine power generation or other large-scale thermal energy storage, and the thermal energy grade is improved.

Description

technical field [0001] The invention belongs to the field of medium-high temperature thermal energy storage, and in particular relates to a device and method for storing and utilizing thermal energy provided by an external heat source into chemical energy in chemical substances by adopting an intermittent fluidization method. Background technique [0002] Because solar energy has the advantages of cleanness, pollution-free, and renewable, more and more people pay attention to it. The large-scale utilization of solar energy is of great significance for solving the problems of environmental pollution, ecological destruction and energy crisis. However, due to the intermittent and discontinuous characteristics of solar energy, which cannot provide energy stably, the large-scale thermal utilization of solar energy is greatly restricted. [0003] At present, there are mainly three heat storage methods in solar thermal utilization, sensible heat energy storage, latent heat energy ...

AI Technical Summary

Problems solved by technology

At present, the basic principles of fluidization devices have been popularized and applied in industrial fields: certain physical processes, such as pneumatic conveying, granulation, drying, heat exchange, etc.; fluidized combustion; petrochemical industry; coal gasification; calcination of materials And roasting, etc., but it is rarely seen in the technical field of high-temperature thermochemical energy storage

Images