Solar thermochemical energy conversion system taking electric furnace dust as circulating medium

Abstract

The invention discloses a solar thermochemical energy conversion system taking electric furnace dust as a circulating medium, which comprises a material conveying subsystem, a reduction reaction subsystem, a zinc treatment subsystem and an iron treatment subsystem. The material conveying subsystem is used for conveying materials required by the reduction reaction subsystem; the reduction reaction subsystem comprises a reduction reactor which is used for receiving the materials conveyed by the material conveying subsystem and carrying out reduction reaction in the reduction reactor; the zinc treatment subsystem comprises a first oxidation reactor and a gas storage tank; and the iron treatment subsystem comprises a second oxidation reactor, a hydrogen storage tank, a second grinding machine and a magnetic separator. By using electric furnace dust as a circulating medium, solar energy is stored in gas fuel. High-grade combustible gas such as Fe3O4, CO and H2 is obtained through the reduction reactor and the oxidation reactors. Meanwhile, combination of recycling and utilization of the electric furnace dust is completed, and the system is low in energy consumption in the process, environmentally friendly, clean and free of environmental pollution.

Description

technical field [0001] The invention relates to the technical field of electric furnace dust treatment and the field of solar energy storage, in particular to a solar thermochemical energy conversion system using electric furnace dust as a circulating medium. Background technique [0002] The output of electric furnace steelmaking dust in my country is large and the recovery value is high. At present, the output of electric furnace steelmaking dust in my country has exceeded 1 million tons, most of which are piled up and landfilled, and only a small part is recycled. Electric furnace dust contains a large amount of Fe and Zn. If it can be fully recycled, it can alleviate the increasingly tense situation of resources in our country. The recovery and treatment methods of electric furnace dust include: solidification and stabilization technology, return sintering, wet extraction, and pyrotechnics. The pyrotechnic process is more mature than other processes, but it needs to use ...

AI Technical Summary

Problems solved by technology

[0006] Raw material NH used in the above system 3 and Co 3 o 4 / CoO, the high cost affects its commercial application

Images