Page 2 - Fulflo Probond economical and environmental filtration solutions for high viscosity fluid processing

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Parker Results

®
In order to prove that the Fulﬂ o
™
ProBond was indeed the correct
solution for this viscous sealant
application, several tests were
conducted during the pilot phase
such as: extrusion, clean differential,
collapse pressure, and ﬂ ow proﬁ les for
the cartridge. The extrusion pressure
was required to establish at what
differential pressure the cartridge
would need to be changed prior to
contaminating the ﬁ ltrate with passed
“extruded” gels. The clean differential
pressure was deﬁ ned as the pressure
required to induce ﬂ ow at the standing
viscosity of the sealant. Knowing
that the standing viscosity was much
higher than the shear thinned viscosity
of the ﬂ owing sealant, the pressure
required to induce ﬂ ow through the
cartridge would be signiﬁ cantly higher
at the start-up. This start-up pressure
was employed when determining
feed pump pressure requirements. To determine the optimum ﬂ ow rate
The collapse pressure was identiﬁ ed for the system, a single 10” long CONCLUSIONS
to establish safe cartridge operating ProBond 150µm cartridge was The extremely viscous and shear
™
limits to avoid downstream evaluated during the pilot phase thinning nature of silicone sealants
contamination and to establish the of testing. At 125,000 cP, a clean
added load factor required by the cartridge provided 0.9 gallons per prove to be a challenge for many
supply pump. minute (gpm) of ﬁ ltrate at an initial competitive technologies. However,
differential pressure starting of 100 the rigid structure and graded
Test results illustrated that the psid, and terminating at 375 psid. The pore density of Parker domnick
ProBond cartridge, with its rigid ﬁ ber completion of pilot testing revealed hunter’s ProBond ﬁ lter cartridges
™
matrix, did not deform or collapse that extrusion pressure exceeded demonstrate that it is the optimum
under differential pressures in excess terminal change pressure, therefore
of the published limits of 150 psid at indicating that gel extrusion was no choice for eliminating costs
70 degrees Fahrenheit. Additional longer considered to be an issue. associated with product waste in
testing during the pilot phase Furthermore, while the cartridge silicone sealant gel formations.
determined that the tested collapse did not collapse, an end sealing Parker scientists and engineers
pressure of the cartridge actually issue began to surface at differential are able to conduct tests and
exceeded 375 psid. The pressure pressures exceeding 375 psi. However, assess the operating conditions
required to induce standing ﬂ ow given the somewhat rapid rise from
through the cartridge was established 225-375psi at a ﬂ ow constant of 0.9 in the most strenuous processing
at 100 psi differential. To avoid over gpm, establishing 225 psig as the applications and recommend
sizing the feed pump, it was decided to recommended cartridge change out ﬁ ltration solutions to maximize
“slow start” the ﬁ ltration process until pressure was deemed appropriate. manufacturing efﬁ ciencies.
the material reached its shear thinned
viscosity, thus 100 psi was assigned as
the clean differential pressure.

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