Shop Contact

Dura-Life™ Filter Bags Conquer Soy Protein with Muscle

The Dura-Life™ filter bags in this Donaldson® Torit® RF Baghouse collector provide longer life and lower emissions at this Midwestern soybean processing plant.

Industry: Grain

Problem: Oily & agglomerative dust caused short filter life & high emissions.

Solution: Donaldson® Torit® Dura-Life™ filter bags last 3X longer and exceed EPA emission standards.

A Midwestern soybean processing plant uses a Donaldson® Torit® RF baghouse dust collector on a pneumatic receiver that regularly processes between 3 and 4 tons per hour of soy protein dust.

Soy protein tends to be oily and agglomerative, so it often builds up and blinds off conventional polyester filter bags early. The maintenance team had to replace their conventional polyester filter bags every 6 months. Now, after installing Donaldson Torit Dura-Life™ filter bags, they find filters last about 18 months—3X longer! 

One of the company’s biggest concerns was their ability to meet EPA emissions standards of 0.05 gr/dscf*. After testing Dura-Life™, the company was pleased to discover that emissions are well below the EPA requirements — just 0.0028 gr/dscf! The maintenance supervisor reports that visual inspections of the ducts also appear much cleaner with Dura-Life™, and ∆P measured 2-4” lower than with non-Dura-Life™ bags.

Longer filter life AND lower emissions? Now that’s tackling protein dust with muscle!


Project Statistics
Dust / Contaminant  Soy Protein
Application Pneumatic conveying
Dust Collector Donaldson Torit RF Baghouse with 324 filter bags, Model 324RFW10
Air Volume 35,000 cfm
Dust Loading 5-8 grains/dscf
Air-to-Media Ratio 7:1
Hours of Operation 4-5 days/week, 24 hrs/day
Polyester Bag Life 6 months @ 6.5 8.5 ∆P
Dura-Life Filter Bag Life 1.5 years @ 4.5 ∆P
Emission Test Results 0.0028 gr/dscf (well below EPA 0.05 gr/dscf requirement)

We can help you get the optimal solution for your application.