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Packed Bed Filter

Page history last edited by Ryon Gesink 15 years, 4 months ago

Building the Packed Bed Filter for GEK v2.0

Parts needed:

- Packed Bed Filter vessel tube

- Bottom end plate

- Top flange ring

- 2" coupling, cut in half

- 1/2" coupling, cut in half

- 5/16 x 5/8 bolts (4 count)

- filter support screens (2 count)

- fine steel wool for filter media

1. Weld Bottom Plate and Top Flange onto Vessel Cylinder

Clamp bottom end plate into packed bed filter cylinder. Slag side of plate should be down. Make sure to center tabs in slots around the perimeter.
Tack end plate and cylinder together only around the bottom seam
Clamp top flange ring into top of filter cylinder. Slag side of flange should be down. Make sure to center tabs in slots around the perimeter.
Tack around bottom of flange ring. Do NOT weld on top of flange
Tack down side seam of vessel. You may need to squeeze the vessel to get the seam parallel, making sure overlap stays consistent.
Grind top surface flat after welding
Clean up flange holes with a 11/32" drill

2. Weld accessories onto vessel cylinder

Weld half of a 2" coupling over the hole on the outside of the bottom end plate. Thread opening side should point downward, so as to turn onto the cyclone exit. Make sure half coupler is "square" so the filter and cyclone will align straight
Weld the halved 1/2" couplers over the small holes on the side. These are bungs for instrument access.

3. Assemble filter inside

Weld four of the 5/16" bolts on the bottom of a circle screen so as to hold it off the bottom of the filter. Position bolts about halfway from the center hole to the wall.
Weld one 5/16" bolt in the center of the second screen circle for the top of the filter. The bolt gives a grab point to remove it from the vessel
Pull apart 4 rolls of steel wool into flat strips in preparation for packing the filter
Pack the filter. Put the screen with four stand off bolts into the bottom. Pack the steel wool in folded layers. Make sure to prevent channels along the sides. The goal is a consistent and complete distribution of steel wool fully filling the vessel. Pack up to about 1" from the top, then put second screen on top to hold it in.