Effect of the cement raw meal rate value on SNCR deNOx efficiency with NH3 as reducing agent

Ya Li Wang*, Nan Li, Hong Zhan Zhang, Su Ping Cui, Yun Ning Zhang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

Many complex factors can affect the process of SNCR in cement calciner, and the cement raw meal rate value is a relatively important one. In the present study the influence of the cement raw meal rate value on the SNCR denitration efficiency was investigated in a tubular reactor with a space velocity of 27000 ml/h in the temperature range of 700-1100 °C, and the oxygen concentration was 5% and both the inlet concentration of NO and NH3 was designed as 1000ppm. The results showed that the denitrification rate of SNCR decreased with the increase of the lime saturation factor (KH) of cement raw meal and increased with the increase of aluminum rate (IM) of cement raw meal at 700~900 ℃recommended that the cement raw meal with low KH, medium silica acid rate (SM) and high IM should be used. In the temperature range of 900~1100 ℃ the denitrification efficiency of SNCR increased with the KH and decreased with the increase of IM. Based on the experimenyal results it is suggested that the cement raw meal with high KH, high SM and low IM should be adopted.

Original languageEnglish
Title of host publicationFunctional and Functionally Structured Materials III
EditorsYafang Han
PublisherTrans Tech Publications Ltd.
Pages1215-1220
Number of pages6
ISBN (Print)9783035713848
DOIs
Publication statusPublished - 2018
Externally publishedYes
EventChinese Materials Conference, 2018 - Fujian, China
Duration: 12 Jul 201816 Jul 2018

Publication series

NameMaterials Science Forum
Volume944 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceChinese Materials Conference, 2018
Country/TerritoryChina
CityFujian
Period12/07/1816/07/18

Keywords

  • Cement calciner
  • Cement raw meal rate value
  • Denitration efficiency
  • SNCR

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