Method for acquiring main energy source required by supercritical carbon dioxide power generation in cement plant

Abstract

The main energy acquisition method required for supercritical carbon dioxide power generation in cement plants, the process and equipment characteristics of high-temperature thermochemical reaction kiln systems using clinker in cement plants, and CO 2 The energy storage device directly stores part of the heat energy of strong radiation / conduction of high-temperature equipment and / or high-temperature materials, and solves the specific adverse effects caused by the high-temperature heat energy radiated / conducted by high-temperature equipment and / or high-temperature materials. The high temperature heat energy converts CO 2 Fluid conversion to high-pressure hot supercritical CO with high energy density 2 fluid, as supercritical CO 2 The main energy source for generator sets to generate electricity. The present invention solves the adverse effects of various types of high-temperature heat energy in various links in the cement clinker production process on the kiln system operating conditions, clinker cooling quality, equipment safety and staff safety, etc., and develops a supercritical CO 2 A series of high-quality high-temperature energy sources for high-efficiency power generation by the power generation system, the method is simple and has industrial practicability.

Description

technical field [0001] The present invention relates to the field of environmental protection and energy technology, in particular to a combination solution to some specific adverse effects caused by various types of high-temperature heat energy in each link of a cement production line, and to economically obtain supercritical CO in cement plants. 2 A method for the primary high-temperature energy source required for power generation. Background technique [0002] As we all know, cement production enterprises are recognized as high-energy-consuming and high-polluting enterprises, and are one of the main sources of carbon dioxide emissions. They not only consume a lot of primary energy (coal) and secondary energy (electricity). CO from cement production 2 Emissions can be divided into CO2 from decomposition of raw material carbonate and combustion of fuel 2 direct emissions and indirect emissions from external electricity consumed in the production process. According to th...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the clinker production system for the high-energy-consuming cement industry is essentially a high-temperature thermochemical reaction kiln system, and the actual energy consumption in clinker production is much higher than that required for thermochemical reaction equilibrium. A large amount of waste heat is continuously generated in the production process, and the high-temperature heat energy of some high-temperature equipment and high-temperature materials has objectively caused some adverse effects. It provides a combination solution to the high-temperature heat energy generated in the cement clinker production process. Specific adverse impact issues, low investment CO 2 The energy storage device stores the high-temperature radiation heat and / or conduction heat energy generated by high-temperature equipment / high-temperature materials in the cement production process, and simply and economically obtains the main high-temperature energy required for supercritical carbon dioxide power generation in cement plants

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