FLK Gas Sampling System - MPIP - Free

SQ256 Retraction Device
2 Installation
2.1 General information
Great importance is given to the point of installation of the retraction device, because the run of the probe and
therefore its measuring point are then defined. There are mainly two different fields in the cement industry where
the probe can be installed:
• Kiln inlet
• Precalcination
It is essential that the installation location and the mounting are defined, with respect to the space requirement,
between the machine supplier or user and SIEMENS
2.2 Point of installation
• Suitable installation space for the insertion and retraction of the probe and for the movement of the feed lines
such as coolant hoses, compressed air, measuring gas and cables must be provided for the complete
retraction device.
• Similarly accessibility in the probe's inserted and retract state should be ensured for installation and
maintenance work.
• The traverse rail should be sloped approx. 1 ... 5° forward to prevent the formation of air pockets in the
coolant in the probe.
• If required, coverage should be provided against rain or falling material (e.g. poker holes).
• On the platform a base-plate should be provided under the retraction device to prevent risk to persons from
falling deposits on the probe.
• It should be ensured that there are no cables or heat-sensitive parts under the retract probe.
2.2.1 Fitting on the kiln inlet
The following points should be followed for gas analysis on the kiln inlet:
Preferentially the probe should be fitted at the side on the kiln inlet chamber.
It should be positioned slightly oblique to the kiln axis.
The probe should be fitted to the side opposite to the side on which the material is fed.
In the inserted state the probe must protrude at least 30 cm behind the rotary seal in the kiln (vertical distance).
The probe must not pass through the material flow from the heat exchanger.
It should be ensured that no baked-on deposits can fall down from the heat exchanger onto the probe.
The probe must have a distance of at least 20 cm from the lining of the rotary kiln. When installing the probe in a
new kiln, pay attention to the lining and kiln expansion in the hot state.
2.2.2 Installation in the heat exchanger ( precalcination chamber)
The following points should be followed for gas analysis in the heat exchanger:
The probe must be installed in an area as free of dust as possible. This position is normally after a cyclone and
under a diffusion box.
In the inserted state this probe must protrude at least 1/3, but at the most up to the middle of the gas line.
The installation location should also be so planned such that the effects of heat on retraction device are not too
high.
With this installation location a closing flap should be fitted if possible to the installation pipe by the customer
(either automatic or manual).
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