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Pumping Tarry Liquids

Page history last edited by jim mason 14 years ago

Pumping tarry liquids is hard. The tars are sticky and foul pumps. Here's some ideas for how to solve the problem from a discussion on the gasification list awhie back.

- Peristaltic Pumps

http://www.novatech-usa.com/Products/VSP-Peristaltic-Pumps-Parts/VSP12

- Pneumatic transport with venturi inlet uptake. like a paint spray gun.

- Pneumatic rising column. Pump air in bottom of pipe that is submerged in the liquid. Air plugs will rise pulling/pushing liquid upwards.

- Dishwaster Recirculation Pumps

washing machine drain pumps are designed to handle lumpy water. The

standard life testing process involves 24/7 non stop operation pumping

a slurry of corn, peanut butter, oils, oatmeal, water and soap for six

months. They are rated at 80 deg C but I've done two year tests of the

same slurry at 95-98 deg C with no problems. The ones with wet rotors

seem to last longer. They cost about 12-20 dollars and if you've got

an old washer sitting around they are free. Hope this helps.