English edition - Buchen UmweltService GmbH

INNOVATION
Two technical innovations from the Buchen Group, the environment-friendly cleaning technology “Low Emission
Cleaning” and the Spiderjet, a technology for the automatic removal of paint, were subject to practice tests within
the scope of the pilot projects in tight cooperation with the internationally active chemical company Dow in Stade,
found as plausible and have been in use since then. The Buchen Group received a “Technology Center Award” from
Dow for both technical developments.
Environment-friendly cleaning of heat exchangers
LOW EMISSION CLEANING
For the interior cleaning of heat exchangers with high
pressure devices, considerably noise emissions are
caused through exiting chemical product remains and
through emissions. In tight cooperation with Dow, the
Buchen Group has developed the innovative cleaning
technology “Low Emission Cleaning”, where, in addition
to the standard equipment for heat exchanger
cleaning with high pressurized water, a special absorber
has been used as well.
With the innovative procedure, the cleaning residues and emissions
on the upper and lower pipe plate are vacuumed during the
cleaning process through a lance device. The exhaust gas flow of
the suction pressure wagon is guided through a two-stage absorber.
With this step, an ideal absorption medium bonds all hazardous
components so that the remaining gas exhaust can be emitted
into the environment without any concern.
Benefits for people and the environment
The “Low Emission Cleaning” is a nearly closed system and offers
a row of benefits. Thanks to the automated cleaning technology,
the personnel does not come into contact with parts subject to high
pressure, which leads to an increased level of work safety. Furthermore,
both smell emissions and environment damages through
product residuals are minimized significantly – other work in the
direct environment can be continued to be executed without hindrance.
The trendsetting cleaning technology was successfully tested by
Dow and the Buchen Group within the scope of a pilot project
and has since been in application. The Maintenance, Engineering
& Support (ME&S) department from key customers and an expert
team from the Allyl-Epi-system participating in the project have
given the “Low Emission Cleaning” to the Buchen Group as an
important contribution to the environment protection, as already
mentioned, the Technology Center Award 2009. The innovative
procedure should also soon be used in other departments.
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Two-stage absorber including absorption medium
Vacuuming on the pipe plates