| SUCCESSFUL SOLVENT CONVERSION
SOLVES NEW JERSEY COMPANY’S PERMITTING DILEMMA
D&F Screw Machine products of East Hanover, NJ produces
high value precision machined plastic parts. After machining
the parts are covered with machine oil. For years D&F
Screw had relied on an aqueous system that could effectively
clean only a portion of their part mix. However, alternative
methods had to be used to clean more complicated geometries
such as deep and/or blind holes. In 2003, Dave Moore, D &
F Screw's owner, decided to replace the old aqueous degreaser
with a state of the art low emissions solvent unit. After
an extensive search, Dave decided on a Vacuum to Vacuum machine,
designed by Dr. Don Gray, the solvent of choice was TCE.
Dr. Gray's design was one that allowed a single solution
to D&F Screw's needs, and has worked well for many years
cleaning and drying the complex plastic parts faster and better
that the old machine . Dr. Gray’s design is known throughout
the industry for producing some of the best "zero emission"
machines, and has provided D & F Screw with years of reduced
solvent usage and emissions. Recently, Dave decided that he
would move his operation to a new location "a few miles
down the road".
Although, the Vacuum to Vacuum design had been operating
well below USEPA and New Jersey DEP limits, relocating the
degreaser would require a new permit. Repermitting TCE machine
was proving to be a cumbersome and lengthy process..
At this point Dave contacted Dr. Gray who was now operating
his own company, Vacuum Processing Systems (VPS). After discussions
with the NJ DEP, Dr. Gray and Scott Mondi of Poly Systems,
Inc., it was decided that converting the machine ton-Propyl
Bromide (nPB) would satisfy the NJDEP, provide a satisfactory
level of cleaning and improve the permitting process.
With the new permit in place, the machine was moved to its
new location, loaded with Poly Systems' SOLVON product and
after some minor software and temperature setting adjustments
, the machine was started up and began providing the performance
required by D & F Screw's part mix.
Dave Moore reports, “Things have gone well since the
move and the machine is working flawlessly. I have noticed
a significant drop in the amount of solvent going to the carbon
drum, next to nothing. The parts are drying better, faster
and there is no solvent smell or excessive odor left on the
parts or in the shop. Decimeter readings around the degreaser
support these observations."
For more information: Please contact:
Vacuum Processing Systems , LLC.
PO Box 822, East Greenwich, Rl 02818
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