Mid-and-low temperature solar and fossil fuel thermo-chemical complementary power generation system and method

Abstract

The invention discloses a mid-and-low temperature solar and fossil fuel thermo-chemical complementary power generation system and method. The system comprises a raw material supply device for storing a fossil fuel, a raw material mixing device for mixing a raw material and non-reacted materials, a raw material metering device for controlling the quantity of the raw material entering a pre-heater within unit time, the pre-heater for pre-heating the raw material, a solar absorption reactor for driving the fossil fuel by using absorbed solar heat to perform decomposition or reforming reaction so as to convert solar energy into hydrogen-rich fuel chemical energy and produce a solar fuel, a solar heat collector for gathering solar energy with low energy flow density into mid-and-low temperature heat energy with high energy flow density and supplying heat to the decomposition or reforming reaction, a condenser for cooling a reaction product, a gas-liquid separator for gas-liquid separation of a mixture, a fuel diversion device for adjusting the proportion of the solar fuel for energy storage or power generation, a gasholder for storing the solar fuel, and power generation equipment for burning the solar fuel and outputting power to the outside. The system and the method realize efficient power generation utilization of the solar energy.

Description

technical field [0001] The present invention relates to the field of solar energy technology, in particular to a power generation system and method in which medium-low temperature solar energy and fossil fuel thermochemistry complement each other, in particular to a low-concentration-ratio solar concentrator to convert low- and medium-grade solar energy into high-grade solar fuel And realize the system and method of power generation. Background technique [0002] With the development and progress of human society, due to the need to improve living standards and promote social development, human demand for energy is increasing. However, the total amount of traditional fossil energy is limited and non-renewable. At the same time, the use of fossil energy is accompanied by serious pollutants. generation and greenhouse gas emissions. The increasingly depleted fossil energy, the ever-increasing energy demand of human beings, and the urgent demand for environmental protection hav...

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Problems solved by technology

However, the high-temperature thermochemical process requires expensive solar concentrators to gather high-grade solar energy to provide the heat energy required for the reaction. At the same time, the high-temperature solar thermochemical process has difficulties and bottlenecks such as low heat collection efficiency, difficulty in tracking the sun, and high requirements for reactor materials. , it is difficult to achieve large-scale promotion and application

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