Donaldson Torit RP Baghouse, Инструкция по установке и эксплуатации

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Donaldson Company, Inc.
3 Operation
Electrical work during installation, service or maintenance must be performed by a qualified electrician and comply
with all applicable national and local codes.
Turn power off and lock out all power before performing service or maintenance work.
Turn compressed air supply off, bleed and lock out lines before performing service or maintenance work.
Check that the collector is clear and free of all debris before starting.
Do not install in classified hazardous atmospheres without an enclosure rated for the application.
The RP Baghouse cleaning system consists of two opposing arms which rotates around the center of the collectors CAP. This
system uses medium pressure air (7.5 PSI) generated by a PD pump typically located at ground level to charge a holding tank.
The system has a 2 stage diaphragm valve set to provide the pulse air when a solenoid is activated.
The solenoid activation is controlled by a pulse controller which calculates the position of the arm using a proprietary system to
determine the position of the arm based on a fixed sensor. This allows the pulse to be oriented directly into the centerline of the
filter to deliver the most effective pulse possible all while properly distributing the pulses around the entirety of the tubesheet to
eliminate wasted pulses. Refer to Appendix A for pulse system alignment instructions.
Tangential Inlet Operation
During normal operation of an RP Baghouse with a tangential inlet, dust-laden air enters the dirty-air inlet. The tangential inlet
induces a cyclonic action which pre-seperates the majority of the particulate from the dirty airstream. During this process the
dirty air passes by the helix and hopper strakes causing further dropout of particulate. As the airflow transitions upward within the
collector, the airflow straighteners reduce the cyclonic action, straightening and distributing the airflow to the filter elements above.
The remaining particulate is separated from the airstream by the pleated filter bags. The clean filtered air continues on through the
CAP and is either exhausted to the ambient air or returned to the facility. The dust left behind forms a “cake” on the outside of the
filters.
As the dust “cake” becomes thicker and less permeable, the pressure drop across the filter rises. To reduce and maintain pressure
drop across the filter bags, a pulse cleaning system is employed.
High Inlet Operation
During normal operation of an RP Baghouse with a high inlet, dust-laden air enters the dirty-air inlet. The high inlet section
contains baffles that prevent the abrasion of filters by directing the incoming dust particles into a replaceable impaction zone then
downward around the filters and into the hopper. This flow path reduces abrasion and assists the cleaning system by supporting
an airflow pattern that encourages the dust dislodged when the filter is pulsed to move downward into the hopper. Baffles in the
inlet keep dusts from directly abrading on the filter bodies.