A calcium-based thermochemical energy storage and release system and process equipped with a dense-phase fluidized storage tank

Abstract

The invention discloses a calcium-based thermochemical energy storage and discharge system and process equipped with a dense-phase fluidized storage tank, and a fluidized bed reactor, which is used for the hydration exothermic reaction of calcium oxide and water and the thermal decomposition of calcium hydroxide Endothermic reaction; high temperature separator, used to separate the gas phase material and solid phase material at the outlet of the fluidized bed reactor; the return device, used to receive the solid phase material separated by the high temperature separator; the silo, used to receive and Store the solid-phase materials received by the feeding device; the bottom of the silo is provided with an inlet for aggregate fluidization air, the inlet of the aggregate fluidization air is connected to the source of aggregate fluidization air, and the material outlet of the silo is connected to the material of the fluidized bed reactor import. The invention can solve the problem of hygroscopic adhesion of powdery materials in the non-energy storage or energy discharge stage on the premise of low energy consumption, so that the method of storing heat energy can be used to coordinate renewable energy power generation and circulating fluidized bed power generation, and improve circulating fluidization The peak shaving rate of bed power generation.

Description

technical field [0001] The invention relates to a calcium-based thermochemical energy storage and discharge system and process equipped with a dense-phase fluidized storage tank. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Energy plays an increasingly important role in modern society. With the consumption of fossil energy, energy and environmental problems are becoming more and more serious. According to data from the National Bureau of Statistics, by the end of 2019, the installed capacity of power generation nationwide was 2.01 billion kilowatts, of which the installed capacity of renewable energy power generation accounted for 40.8%, and the installed capacity of t...

AI Technical Summary

Problems solved by technology

Since the thermal power unit increases or decreases the load by increasing or decreasing the amount of fuel, but there is a certain time interval between changing the amount of fuel and changing the amount of power generation, so its peak-shaving rate is limited, making it unable to respond quickly to the power grid. Peak shaving command, in which the peak shaving rate of circulating fluidized bed power generation is significantly affected by its large thermal inertia

Images