A CFD technology-based simulation analysis method for sensible heat recovery of high-temperature activated fly ash

Abstract

The invention provides a CFD technology-based high-temperature activated fly ash sensible heat recovery simulation analysis method. The method comprises the following steps: S1, establishing a simplified sensible heat recovery packed bed model; performing CFD numerical simulation on the sensible heat recovery packed bed model; and S2, performing initial setting on the simplified sensible heat recovery packed bed model, performing calculation according to the initial setting to obtain air temperature distribution at different moments in the sensible heat recovery packed bed model and the temperature condition of hot air at a bed outlet, and setting different operation conditions to perform regular adjustment on the sensible heat recovery process. The CFD-based simulation analysis method forthe sensible heat recovery process of the high-temperature activated fly ash, provided by the invention, has the advantages that the operability is high, the fitting degree with actual working conditions is very high, the labor cost can be reduced, the economic cost of experimental equipment is further reduced, and potential safety hazards caused in an experimental operation process are also eliminated.

Description

technical field [0001] The invention relates to the field of fluid mechanics, in particular to a high-temperature activated fly ash sensible heat recovery simulation analysis method based on CFD technology. Background technique [0002] Fly ash is the solid waste left by the combustion of coal in coal-fired boilers, mainly a by-product of coal-fired power plants. According to statistics, the accumulation of fly ash in China has reached 12 billion tons and is increasing at a rate of 160 million tons every year. Fly ash will occupy cultivated land and cause serious pollution to soil, water resources and air. At present, fly ash has been used in many fields such as construction and construction, but it is generally used extensively with low added value and low technical content. The comprehensive utilization of fly ash is an important subject that our country has researched and solved for many years. The alumina content in fly ash is generally 17% to 35%, and the aluminum con...

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Problems solved by technology

However, the existing technology cannot use CFD technology to study the technical scheme of high temperature activated fly ash sensible heat recovery

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