ENOTEC CEMTEC® Reliable and maintenance-free gas extraction system for extreme combustion processes

The CEMTEC gas sampling system was developed for continuous flue gas

analysis in cement kiln inlet chambers and in other extremely dusty high

-temperature processes such as in lime works.

The goal is to increase product quality while reducing fuel consumption

and simultaneously decreasing harmful emissions. Especially with regard

to the increasing use of alternative fuels in rotary kilns and large

combustion chambers, the analysis of these systems is gaining in

importance.

Furthermore, the stricter emission targets for cement plantsin Germany,

Europe, the USA, and other countries worldwide require

continuous process measurements for SNCR control to achieve low NOx

combustion. Process temperatures up to 1.400 °C, dust concentrations

up to 2.000 g/m³, high mechanical stresses from falling material, and

ambient temperatures up to 50 °C place extremely high demands on

all types of technology. The unique features of the CEMTEC offer an

optimal solution for continuous measurements under extreme

conditions such as those found in furnace inlet chambers.

Cross-section: Gas inlet CEMTEC probe tube

The CEMTEC is self-cleaning, which enables continuous measurement and

thus 95% availability during the process. In addition to the in-situ sensors

for oxygen and COe analysis, the extractive analyzers are supplied with

dust-free sample gas for the determination of, for example, SO₂, NOₓ, or

CO₂. Thanks to mechanical cleaning, the uninterrupted extraction and

analysis of process gas is possible over extended periods: The filter/seal at

the gas inlet continuously breaks down deposits and blockages, ensuring

an uninterrupted gas supply. The patented swivel drive rotates the probe

at programmable intervals, thus preventing material from accumulating on

the probe tube. Together with the powerful pneumatic drive motor, the

probe can perform a controlled retraction at any time.

Technical data

Process gas temperature ≤ 1400 °C

Immersion depth/material up to 4.5 m

Dust loading up to 2000 g/m³

Probe cooling method Air/coolant or water/coolant

Probe operation 100% pneumatic drives (extension and retraction, rotation,

plunger and flushing)