Combustion power generation system capable of achieving staged utilization of flame

Abstract

The invention relates to the technical field of combustion power generation, and aims to provide a combustion power generation system capable of achieving staged utilization of flame. The system comprises a burner, at least one group of photovoltaic cells and a cooler, wherein the burner is arranged in a combustion chamber of a boiler, the at least one group of photovoltaic cells are arranged around the burner in the combustion chamber and are connected with a photovoltaic cell matching part through a wire, the photovoltaic cell matching part is arranged outside the combustion chamber, and the cooler is arranged on the back sides of the photovoltaic cells and is connected with a medium circulation system through a pipeline. Compared with an existing combustion technique, an energy gradient utilization concept is reflected by staged utilization of the combustion power on the flame, and the power generation efficiency of an existing system can be remarkably improved by combination of the energy gradient utilization concept and the combustion system; different from a mode of absorbing energy released by combustion in a thermal form in the existing boiler power generation technology, photoelectric conversion is carried out on light energy which can be directly converted to electricity to be taken as a first step of energy conversion, and thermal energy recycle is taken as a second step of energy conversion; and through reasonable utilization on the energy, the waste of energy quality is prevented, and the thermal efficiency of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of combustion power generation, and in particular relates to a combustion power generation system for realizing staged utilization of flames. Background technique [0002] Combustion technology is the core technology of modern industry and the main way of consuming fossil energy. At present, the most important application of combustion technology is boiler combustion, and its combustion efficiency can reach more than 95%. However, if it is considered that the main heat is used to generate electricity, the actual efficiency is not high. The thermoelectric conversion efficiency of the most advanced ultra-supercritical combustion technology is only 45%, and this efficiency has reached the bottleneck of the field, and further improvement is difficult and space-consuming. limited. [0003] At present, new chemical energy utilization methods include: fuel cells, chemical chain combustion, thermal photovoltaics, ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect of unreasonable utilization of the quality of energy released by boiler combustion in the prior art, and provide a combustion power generation system that realizes graded utilization of flames

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