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Servomex finds hybrid combustion analysis solution

Published by , Editorial Assistant
World Cement,

Servomex has cooperated with FLO2R, a Danish gas analysis company that has created a unique measurement for combustion safety in high dust environments.

FLO2R’s Hybrid 600 combines the benefits of in-situ and extractive gas analysis techniques into a gas analysis solution that controls potentially dangerous conditions. It is particularly for use in applications such as cement production, power plants, waste incinerators, and lime kilns.

The system substitutes a conventional extractive system with a laser-based hybrid bypass solution. A key component of the system is Servomex’s SERVOTOUGH Laser 3 Plus Combustion analyser. The tunable diode laser (TDL) technology that is used by the analyser avoids the problems of extractive systems, such as response times of up to sixty seconds, regular maintenance, and the use of significant space. In comparison, the company’s analyser offers fast response measurement, which is typically less than five seconds, without the requirements of a sampling system.

Regardless of duct size, the Hybrid 600 operates in dust loads of up to 200 g/m3. The system eliminates many of the problems that face TDL analysers in high dust environments, including an air knife to protect the optics from process gases, a protective optical barrier, and the replacement of the dust-free process gas for analysis every three seconds. Without losing the benefits of an extractive system, the system is able to deliver the benefits of TDL analysis, such as speed, low mainentance, small footprint, lower project price, and simple installation and operation.

Trials for the system were carried out at Aalborg Portland Cement plant in Denmark. The system was installed at the electro precipitator inlet, using Servomex’s combustion analyser as the control measurement for carbon monoxide (CO) levels. The unit operated at 130°C, with a process-dependent dust load between 50 and 200 g/m3. The trials confirmed the capabilities of the Hybrid 600 and the efficiency of the air knife purging system.

“The fast response of the Laser 3 Plus makes it the ideal choice for our hybrid solution,” said Karsten Brink Floor, Managing Director of FLO2R. “In addition to fast performance, the combustion analyser is extremely compact, making it easy to fit into the overall system, without significantly increasing the footprint. It also offers unique optics that minimise light loss in dusty conditions – essential to the successful performance of the Hybrid 600 system.”

“The trials at Aalborg proved the value of the Hybrid 600 system in high dust load environments,” said Stephen Firth, Global Business Development Manager at Servomex. “It also clearly demonstrated the performance benefits of using the Laser 3 Plus within that system.
“The analyser is designed for high particulate environments and is easy to install and align. In addition, it is fitted with a line lock system to ensure it continues to measure the required gas accurately. This is crucial for safety system applications, such as detecting rapid CO build up.
“Importantly, the system can also be optimised to measure both CO and methane, increasingly recognised as a key measurement for safety in combustion.”

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European cement news Cement news 2018