Supercritical carbon dioxide power generation system and method combining supercritical water oxidation technology

Abstract

The invention relates to a supercritical carbon dioxide power generation system combining a supercritical water oxidation technology. The system comprises a supercritical water oxidation unit, a heatexchange unit, a supercritical carbon dioxide power generation unit, an expansion machine power generation unit and a tail gas heat energy utilization recovery unit; the supercritical water oxidationunit involves a supercritical water oxidation reactor, the heat exchange unit involves a main heat exchanger, the supercritical carbon dioxide power generation unit involves a turbine, a motor, a high-temperature heat exchanger, a low-temperature heat exchanger, a high-temperature compressor, a low-temperature compressor and a cooler, and the expansion machine power generation unit involves an expansion machine and a generator; and the tail gas heat energy utilization recovery unit involves a liquefying separation treatment device. The supercritical carbon dioxide power generation system and method combining the supercritical water oxidation technology can effectively treat sewage sludge and generate electric energy; and an ecological development mode combining environmental pollution treatment and energy development and utilization is realized.

Description

Technical field [0001] The invention belongs to the technical field of clean energy power generation systems, in particular to a supercritical carbon dioxide power generation system and a power generation method combined with supercritical water oxidation technology. Background technique [0002] With the increasingly severe problems of energy shortage and environmental pollution, the transformation of the traditional economic growth mode of high energy consumption and high pollution, the development of a low-carbon economy, and the realization of sustainable development are becoming the common choice for economic development of all countries in the world. [0003] The development and utilization of clean, environmentally friendly, renewable and ecologically-friendly new energy is the key to mankind's alleviation of energy and environmental problems. Electricity consumption is one of the main forms of energy consumption. About 68% of other energy sources are converted into electric...

AI Technical Summary

Problems solved by technology

Therefore, the use of solar power to generate electricity has the problems of high cost and low conversion efficiency.

The use of geothermal power generation requires the use of other fuels as auxiliary heat sources, such as combined power generation with gas. The system structure is complex, maintenance is difficult, and the cost of power generation is high.

It can be seen that most of the existing energy solutions only consider the development and utilization of new energy sources to reduce environmental pollution, but do not consider the solutions to the environmental pollution problems that have been caused.

Or consider only solutions to environmental pollution without mentioning energy issues

The resulting redundant construction and high investment have become environmental burdens and energy waste in disguise

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