Cement Plants

Acoustic pyrometry has been proven to provide accurate temperatures in roughest, most abrasive conditions. Sound waves, and therefore our temperature measurements, are not affected by dust, nor the abrasive material in your process.

Operational instability is a cause of product quality problems. Measuring temperature, either the combustion air or flue gas is a key parameter in a number of kiln processes.

Kiln stability, operation and performance optimization requires accurate kiln temperatures, and the proper and complete combustion of the variety of fuels involved. The acoustic pyrometer provides accurate, real time, non-contact temperature measuring. Additionally, the Acoustic Pyrometer in the kiln hood or cooler can optimize cooler fans by returning maximum temperature as secondary air or as tertiary air to the precalciner.

Sound waves can be used to measure the temperature of a gas, including air, using our Boilerwatch^® MMP-II Systems.

For measurement of gas temperature in a kiln the distance between the acoustic transmitter and receiver is fixed and easily measured, and the flight time is measured by the acoustic pyrometer. From this information, the average gas temperature across the path is computed. For the complete theory, see The Technology.

INSTALLATIONS:

• COOLER:

The BOILERWATCH® MMP II, Acoustic Pyrometers are installed with 2 ports configured for 1 Single Path at the Cooler Kiln.

• TOWER:

The BOILERWATCH® MMP II, Acoustic Pyrometers are installed with 2 ports configured for 1 Single Path at the Tower.

SEI Acoustic Pyrometer Features

• Eliminate thermocouple replacement and maintenance time.
• Non-Intrusive design: Stainless Steel Waveguides are outside the hood, eliminating wear.
• Suitable for harsh, abrasive environments and all fuels.
• Unaffected by dust.
• Unaffected by air cannons.
• The system’s lower range of 35^o F allows it to be used for cold or warm start-ups.
• Upper temperature range of 3500^o F, or nearly 2000.^o C.
• Suitable for Consistently High Gas Temperatures and Startup.
• Linear and Accurate.
• Compared to replacing Thermocouples during outages, saves time when most needed.
• Fault Tolerant Processor Control Unit (PCU).
• The 4-20 mA temperature output is of the path, average, and difference, and easily connects to the Plant’s computer system.
• RS-232 and RS-422 for local monitoring and statistics.
• Telephone modem for remote monitoring.
• Automatic recovery after power loss.
• Remote enable/disable input