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Numerical simulation study on gas–solid two-phase flow in pre-calciner

✍ Scribed by Zhijuan Hu; Jidong Lu; Lai Huang; Shijie Wang

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
385 KB
Volume
11
Category
Article
ISSN
1007-5704

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✦ Synopsis

A three-dimensional numerical simulation of DD (dual combustion and denitratior process) pre-calciner for cement production was conducted in this paper. In Euler coordinate system, the fluid phase is expressed with RNG k-e two-equation model and the solid phase is expressed with particle stochastic trajectory model in Lagrange coordinate system. Four mixture fractions are deduced in this article to simulate the gas compositions. The results of numerical simulation predicted the burn-out ratio of coal and the decomposition ratio of limestone particles along with particle trajectories. It also supplied theoretical foundation for industrial analysis of the coupling relation between coal combustion and calcium carbonate decomposition.

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