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Numerical Simulation of Pollutant Formation in Precalciner
Author(s) -
Huang Lai,
Lu Jidong,
Wang Shijie,
Hu Zhijuan
Publication year - 2005
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450830408
Subject(s) - kiln , cement , combustion , pollutant , coal , environmental science , cement kiln , raw material , coal combustion products , waste management , materials science , chemistry , engineering , metallurgy , organic chemistry
For cement plants, great attention is being paid to the emission of the pollutant gases, especially NO, CO and CO 2 . Precalciner is an important equipment in a cement plant in that it can reduce not only the heat loading of rotary kiln but also the NO emission because of its relative low operating temperature. In this paper, the mechanisms for the formation of NO and CO are analyzed and a numerical simulation technique is applied to model the coal combustion, raw material decomposition and concentration distribution of the pollutant gases in a full scale DD‐PRC (dual combustion and denitrator process precalciner). The predicted results agree well with the measured data.