Page 3162 - Flipbook_SolidDesignSoutheast2020

www.PowderBulkSolids.com 23

Januar y 2019
Figure 2:
Test material
properties

PLEATED

BEATS

Figure 1. Test piping layout showing
POLY
standard and inclined pipe sections
In addition to normal convey-
ing data (airflow, pressure, rate)
the convey line was outfitted
with pressure transmitters along
the way to yield more definition
as to convey losses in the area.
We can see the overall pressure
drop for the “section” which
®
®
includes getting the material Donaldson pleated filters with Ultra-Web
from the feedpoint to the join- Spunbond media outperform baghouse
filters made with singed polyester felt.
ing point (P1-P3). For this com-
parison, the inclined pipe has Independent
a shorter overall length of pipe laboratory testing*
(think hypotenuse on a right results indicate:
triangle) and one less 90-degree 62%
elbow. We can also see the pres-
LOWER
sure for the “segment” which PRESSURE
is equal lengths of pipe that is DROP
inclined or level horizontal (P2-
P3). In this way we can see the
correction factor for different 87%
types of flow. FEWER
CLEANING
Dense phase flow in this test
PULSES
was primarily generated us-
ing continuous dense phase
equipment (airlock fed) to re- 94%
cord steady state conditions.
Alternatively, the natural sugar REDUCED
EMISSIONS
product was conveyed using a
batch dense phase vessel along
with supplementary downstream Donaldson pleated
air injection. Multiple batches filters with Ultra-Web
Spunbond media deliver
were conveyed and the values
for each run averaged. While Q Consistent cleaning power
important to demonstrate the in- Q Compressed air savings
clined pipe can be used on vari- Q Greater dust capture
ous feed devices, the resulting
data is comparable to the others
runs using steady state.

Results and Analysis *American Society for Testing and Materials (ASTM) test D 6880-02
Once the data is collected we
can begin to understand more UPGRADE YOUR FILTERS
about how the inclined pipe
approach compares to standard
horizontal/vertical piping and
how we should account for
Donaldson.com
the inclines in system designs. Donaldson.com
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There are three scenarios that
any
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