Why Food and Pet Food Facilities Still Struggle with Industrial Air Quality

The need for more housekeeping over time - which is the problem you can see - is often because something changed somewhere in the process.

And plants are always changing.

Production increases. Equipment gets moved. New lines are connected. Ingredients change. Pickup points are added. Ductwork gets modified. Filters are replaced. Operators change how material is introduced. Equipment that once ran independently begins running simultaneously.

Individually, these changes may seem minor.

Together, they can change how the entire system performs.

What Changed?

When a system that once worked well begins struggling, this is one of the first questions we ask.

You increased production.

More product can mean more dust generation, greater material loading, longer operating hours, and more processes running simultaneously.

What you may see: More airborne dust, increased housekeeping, filters loading faster, or declining capture.

What may actually be happening: The original system was designed around a different production rate or operating condition.

You added equipment to an existing system.

One more mixer, pickup point, production line, or branch may not seem significant.

But airflow is finite.

What you may see: Poor capture at the far end of the system, inconsistent suction, dust escaping at certain locations, or performance changing depending upon which equipment is operating.

What may actually be happening: Airflow has been redistributed throughout the system. Adding one point can affect every other point connected to it.

You moved equipment.

Production equipment moves all the time. The dust collection or conveying system often gets modified to follow it.

What you may see: Reduced pickup, material settling in ductwork, plugged lines, or a system that simply does not perform as well as it did before.

What may actually be happening: Longer runs, additional elbows, different elevations, or field modifications changed the system resistance or conveying characteristics.

Your ingredients changed.

A powder is not just a powder.

Particle size, bulk density, moisture, cohesiveness, fat content, and other characteristics influence how material becomes airborne, travels through piping, separates, and filters.

What you may see: More dust, filter problems, buildup, poor conveying, or frequent plugging.

What may actually be happening: The system is handling a material with different characteristics than those for which it was designed.

You changed the process.

A faster mixer. A different dump sequence. Larger batches. New packaging equipment. Different transfer methods. More frequent production cycles.

Each can change when, where, and how much air or material the system must handle.

What you may see: Dust clouds during certain operations, intermittent capture problems, or a problem that only occurs during part of the production cycle.

What may actually be happening: The system may have sufficient capacity overall but not under the new peak operating condition.

You added ductwork or modified piping.

A new branch here. An elbow there. A longer run to accommodate new equipment.

Those changes add up.

What you may see: Poor airflow, reduced suction, material dropout, buildup, or recurring maintenance problems.

What may actually be happening: The pressure requirements and system balance are no longer what they were when the system was designed.

More equipment is operating at the same time.

A system may perform perfectly when three processes operate and struggle when six operate.

What you may see: Inconsistent capture, dust escaping only during peak production, or operators reporting that “sometimes it works and sometimes it doesn't.”

What may actually be happening: The issue may not be equipment failure at all. The plant's simultaneous-use requirements may have changed.

Your maintenance practices changed.

Filters, dampers, rotary valves, ductwork, hoses, seals, and other components all affect system performance.

What you may see: Gradual loss of suction, increasing dust accumulation, more frequent plugging, or higher energy consumption.

What may actually be happening: Several relatively small changes in system condition may be creating one very visible production problem.

When dust starts accumulating, the natural response may be to improve housekeeping.

When suction drops, the assumption may be that a larger fan is needed.

When a conveying line plugs, attention naturally goes to the location of the blockage.

But that is the outcome.

The cause may be 200 feet away—or the result of a process change made six months ago.

That is why Air Dynamics looks at the system as a whole.

We evaluate what the system was originally designed to do, what the plant is asking it to do today, and what has changed between the two.

That can include:

• airflow and system balance;
• production rates and simultaneous use;
• source-capture locations;
• material characteristics;
• duct and piping configuration;
• conveying velocity;
• filtration;
• equipment condition;
• controls and sequencing; and
• future production requirements.

Sometimes You Need New Equipment. Sometimes You Don't.

A larger dust collector does not correct poor source capture.

A larger fan does not necessarily correct an unbalanced system.

A new vacuum producer does not correct poorly designed piping.

And replacing equipment that is still capable of doing its job may add cost without addressing the actual problem.

Sometimes the answer is new equipment.

Sometimes it is modifying pickup points, rebalancing airflow, changing piping, improving controls, separating processes, or rethinking how material moves through the plant.

The first step is finding the cause—not treating the symptom.

Your Plant Changed. Did Your System Change With It?

If dust, poor airflow, plugged lines, excessive housekeeping, odors, or recurring maintenance problems have become part of normal production, look at what changed.

The system may be telling you something.