Optimization method for pressure swing adsorption carbon capture based on Fluent software

Abstract

The invention discloses an optimization method for pressure swing adsorption carbon capture based on Fluent software. The method comprises establishing of an adsorption bed model for adsorbing CO2 andestablishing of a mold for calculating fluid mechanics; and the method comprises the following specific steps: firstly, setting basic parameters of an adsorption bed, and performing model assumptions; then performing numerical simulation on a CO2 adsorption process by utilizing the Fluent software, and establishing a mass, momentum and energy conservation equation; writing user-defined functionsfor solving, and using three user-defined scalars and six user-defined memories; setting initial and boundary conditions of pressure swing adsorption, and simulating the whole adsorption process through a discrete control equation to obtain adsorption results; and when an adsorption process is finished, adjusting the initial or boundary conditions according to the adsorption results to find the optimal adsorption conditions corresponding to the adsorption bed. The method provided by the invention obtains more accurate and more practical fluid flow distribution, component concentration distribution, various temperatures and the like in an adsorption container and optimizes the energy efficiency analysis and adsorption system in the CO2 adsorption process.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a Fluent-based optimization method for pressure swing adsorption carbon capture. Background technique [0002] The issue of climate change has gradually become one of the focuses of global attention, and one of the main negative contributions is the greenhouse effect of carbon dioxide. Among many climate change mitigation technologies, carbon capture and storage (CCS) technology is considered to be a positive and effective technical measure. As for the energy consumption analysis in carbon capture technology, the predecessors summarized the relevant research on carbon dioxide physical adsorption, and pointed out that adsorption carbon capture technology should pay attention to the thermodynamic analysis of the first law and the second law of adsorption technology. Usually CO2 capture methods are: absorption method, adsorption method, membrane separat...

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However, the technical solutions disclosed in the above patent documents are only discussed for the simulation results of a certain fixed material and fixed conditions. If the material is changed to change the conditions, a long-term experiment will be carried out again.

will consume a lot of manpower, material and financial resources

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