Abstract: The present invention disclosed a method for underground separation of components in sulfur-containing flue gas and sequestration of carbon dioxide and sulfides, comprising: injecting sulfur-containing flue gas into injection well which is arranged in a well pattern of a sequestrated aquifer in advance; transiting and injecting formation water into the formation at a first preset injection speed by injection well of the well pattern after injecting the sulfur-containing flue gas for a first preset time, maintaining the first formation pressure, and conducting water drainage and gas production by a production well of the well pattern in a mode of a fixed bottom hole flowing pressure; and determining the well shut-in time according to the nitrogen molar concentration of the production well and conducting well shut-in. The separated N2 is produced, while the separated CO2 and sulfides are sequestered in aquifer, achieving effective underground separation of the flue gas components.

Abstract: The present disclosure relates to a method and system for determining transportation safety of pulverized coal. The method includes: acquiring coal particle data during transportation of pulverized coal, where the coal particle data is size data of a coal particle accumulation; determining a particle model of the coal particle accumulation during the transportation of the pulverized coal according to the size data; establishing a constitutive theoretical model to describe all flow regimes of a coal granular medium; numerically discretizing the constitutive theoretical model by using a numerical method to obtain discrete equations; calculating a movement process of the coal granular medium according to the discrete equations and the particle model of the coal granular medium to obtain a calculation result; plotting the calculation result by using post-processing software Tecplot to obtain relevant information of a coal particle flow; and determining whether the pulverized coal transportation process is safe.

Abstract: A performance prediction method and system for a whole atomization process of an aeroengine fuel. The method includes: establishing a physical fuel-gas-droplet multiphase flow model; obtaining a central velocity field and a fluid volume fraction distribution of meshes with a finite volume method (FVM) based on the physical fuel-gas-droplet multiphase flow model; defining a gas and a liquid according to the central velocity field and the fluid volume fraction distribution; performing mesh refinement on the gas-liquid two-phase interface with an orthogonal adaptive Cartesian mesh method; transforming droplets less than a specified size in the atomization process into Lagrangian particle points; and performing calculation on different volume fractions for the Lagrangian particles included in the meshes to obtain flow field data and droplet data on different time nodes.

Abstract: The present disclosure relates to a method and system for determining transportation safety of pulverized coal. The method includes: acquiring coal particle data during transportation of pulverized coal, where the coal particle data is size data of a coal particle accumulation; determining a particle model of the coal particle accumulation during the transportation of the pulverized coal according to the size data; establishing a constitutive theoretical model to describe all flow regimes of a coal granular medium; numerically discretizing the constitutive theoretical model by using a numerical method to obtain discrete equations; calculating a movement process of the coal granular medium according to the discrete equations and the particle model of the coal granular medium to obtain a calculation result; plotting the calculation result by using post-processing software Tecplot to obtain relevant information of a coal particle flow; and determining whether the pulverized coal transportation process is safe.