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- W4234941290 abstract "ABSTRACT The paper presents some results of the mathematical simulation of a new concept of direct gasification of pulverized coal in a stream reactor. The new' method presumes that gasification of pulverized coal will occur in the annular region of a cylindrical reactor during the co-current flow of coal-oxidant mixture in the peripheral zone and hot combustion products-serving as a heat source-in the core region of the reactor. Part I. ofthe paper outlined the rationale ofthe gasification concept and described the model of hydrodynamics and of radiative heal transfer in the particle-laden gas flow. The process was modelled as a reactive, multi-component, two-phase mixture flow with simultaneous combustion in the core and coal gasification in the peripheral annular region of the reactor, with radiative heat exchange between the two co-current streams. The gas phase was described in the Eulerian frame and the discrete phase in the Lagrangian frame with an account for mutual mass and heat exchange between the two phases. Radiation heat exchange was modelled by the six-flux model. Part II deals with coal chemical reactions relevant to the considered gasification concept and presents some results of computation by the complete model of the process. Heterogeneous chemical reactions of coal were treated in a kinetic-diffusion regime. The model, verified in an example of pulverized coal combustion, showed that the concept is feasible and yielded basic information for the design of an experimental rig for a final verification of the new gasification technique." @default.
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- W4234941290 date "1994-05-01" @default.
- W4234941290 modified "2023-09-29" @default.
- W4234941290 title "Application of Computer Simulation in a Design Study of a New Concept of Pulverized Coal Gasification" @default.
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- W4234941290 doi "https://doi.org/10.1080/00102209408935385" @default.
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