Use of acoustic temperature measurements in the cement manufacturing pyroprocess

Acoustic pyrometry enables accurate, reliable gas temperature measurements for use in combustion and emission control systems. This paper reviews traditional temperature measurement techniques, then focuses on two practical applications in the cement manufacturing pyroprocess that have utilized acoustic pyrometry for monitoring of gas temperatures. Progress in acoustic pyrometer technology has enabled the reliable measurement of gas temperatures, providing instantaneous temperature data, which can be used on a real-time basis for controlling operations, minimizing forced outages, and avoiding excessive NOx generation. This information can support process tuning and optimization programs to improve plant operation. The method also provides a valuable tool for obtaining empirical data to help guide design modifications, and characterize process performance.