Recover More Than Dust. Recover Material, Energy, and Operating Costs.
What leaves your facility through a dust collection or industrial ventilation system may represent more than waste.
Manufacturing processes can send valuable powders, fibers, fines, pellets, resins, wood products, and other raw materials into collection systems. At the same time, large volumes of conditioned or heated process air may be exhausted from the facility.
Both can represent opportunities for recovery.
Air Dynamics engineers industrial resource recovery, material reclamation, air recirculation, and heat recovery solutions designed to help manufacturers reduce material loss, lower energy consumption, decrease disposal costs, and improve overall process efficiency.
The Cost of Material and Energy Loss
Valuable Material May Be Leaving Your Process
Many industrial dust collection and ventilation systems are designed primarily to remove airborne particulate from manufacturing processes. However, some of the collected material may still have economic value.
Depending upon the process, recoverable materials may include:
- powders and bulk solids;
- wood dust, fibers, chips, and fines;
- plastic pellets and resins;
- metal fines and particulate;
- food ingredients;
- textile fibers;
- minerals and aggregate;
- chemical and pharmaceutical powders; and
- other reusable process materials.
When technically and economically practical, captured material may be separated, collected, and returned to production or directed toward another beneficial use.
Recovering material can help reduce raw-material purchases, disposal expenses, hauling requirements, and the total amount of waste generated by a facility.
Your Exhaust Air May Also Contain Valuable Energy
Material is not the only resource that can leave a manufacturing facility through an exhaust system.
The U.S. Department of Energy estimates that 20% to 50% of industrial energy input is lost as waste heat, including energy contained in hot exhaust gases and other process losses.
Process heating represents a particularly significant opportunity. According to the Department of Energy, process heating accounts for approximately 51% of onsite manufacturing energy use, and about one-third of the energy consumed for process heating is ultimately lost as waste heat.
Depending upon the application, exhausting heated process air can also require a facility to heat replacement or makeup air continuously.
Rather than automatically exhausting all of that energy outdoors, an engineered system may be able to recover part of its value.
Industrial Air Recirculation and Heat Recovery
Air Dynamics can evaluate whether filtered exhaust air can be safely and effectively recirculated to the facility or whether its thermal energy can be transferred through an appropriate heat recovery system.
Potential strategies may include:
- filtered-air recirculation;
- exhaust-air heat recovery;
- process heat recovery;
- heat exchangers;
- makeup-air energy reduction;
- air-to-air energy transfer;
- process-air reuse; and
- integrated dust collection and energy recovery.
The appropriate approach depends upon the material, process, contaminants, exhaust temperature, airflow, applicable codes and standards, indoor air quality requirements, and facility operating conditions.
Not every exhaust stream should be recirculated. Air Dynamics evaluates the complete application before recommending a solution.
How Much Energy Could Be Recovered?
There is no universal recovery percentage because industrial processes vary considerably.
However, the potential can be substantial.
The U.S. Energy Information Administration reports that, in some industrial furnace applications, waste heat recovery can improve energy efficiency by 10% to 50%.
The actual economic opportunity at a facility depends upon factors such as:
- exhaust airflow in CFM;
- exhaust-air temperature;
- outdoor and indoor temperatures;
- annual operating hours;
- natural gas, electricity, or other energy costs;
- process operating schedule;
- filtration requirements;
- contaminant characteristics; and
- the amount of recovered energy that the facility can beneficially reuse.
Air Dynamics can evaluate these factors to determine whether an energy recovery project offers a practical return on investment.
Two Resources. One Opportunity.
An industrial collection system can potentially carry two forms of economic value away from a manufacturing process:
1. Material Value
What is the collected material worth?
If reusable raw material is being captured and discarded, the true cost may include the original material purchase price, replacement material, handling, transportation, and disposal.
2. Energy Value
What is the exhausted air worth?
When heated or conditioned air is exhausted outdoors, the facility may lose thermal energy while simultaneously paying to heat or condition replacement air.
Evaluating both sides of the equation provides a more complete picture of the potential return from an engineered resource recovery system.
Our Engineering Approach
| We Evaluate | Why It Matters |
| Material Characteristics | Determines whether captured material can be safely recovered and reused. |
| Material Loss Rate | Identifies how much valuable product may be leaving the manufacturing process. |
| Material Value | Establishes the potential annual value of recovered product. |
| Collection Methods | Optimizes material capture without compromising production efficiency. |
| Separation Requirements | Separates reusable material from unwanted waste streams. |
| Process Integration | Provides a method for returning recovered material to production or another beneficial use. |
| Exhaust Airflow | Determines the volume of air and potential thermal energy leaving the facility. |
| Exhaust Temperature | Helps quantify the potential value of recoverable heat. |
| Air Recirculation Potential | Evaluates whether properly filtered air can safely be returned to the facility. |
| Energy Costs | Establishes the economic value of potentially recoverable energy. |
| Operating Hours | Converts material and energy losses into annual operating costs. |
| Return on Investment | Compares potential annual savings with the cost of implementing the recovery system. |
Typical Resource Recovery Solutions
| System / Solution | Function |
| Resource Recovery Systems | Reclaim valuable powders, fibers, fines, pellets, and other process materials. |
| Cyclone Separators | Separate reusable material from process air and waste streams. |
| Industrial Dust Collectors | Capture particulate for disposal, reclamation, or further separation. |
| Pneumatic Conveying Systems | Transport recovered material back to production or another process. |
| Custom Collection Hoppers | Store recovered material before reuse or transfer. |
| Filtration Systems | Capture fine particulate and prepare appropriate air streams for additional treatment or evaluation. |
| Industrial Makeup Air Systems | Replace exhausted air while maintaining facility pressure and temperature requirements. |
| Air Recirculation Systems | Return appropriately filtered air to the facility when the application permits. |
| Heat Recovery Systems | Capture thermal energy from exhaust streams for beneficial reuse. |
| Integrated Controls | Automate collection, recovery, transfer, and energy-management processes. |
What Is Going Out Your Exhaust System?
The answer may be costing more than you think.
Consider four questions:
- How much material are you collecting each hour?
- What does that material cost per pound?
- How much heated or conditioned air are you exhausting each minute?
- How much are you spending to replace that material and energy every year?
Even relatively small losses can become significant when multiplied across thousands of annual operating hours.
A properly engineered resource recovery system can transform what was previously treated as waste into a measurable opportunity for operating-cost reduction.
When a Resource Recovery Evaluation Makes Sense
Your facility may benefit from an engineering evaluation if you are:
- disposing of valuable raw material during production;
- experiencing excessive product or process-material loss;
- paying significant waste hauling or disposal costs;
- exhausting large volumes of heated or conditioned air;
- paying substantial natural gas or process-heating costs;
- bringing large volumes of makeup air into the facility;
- looking for opportunities to reduce energy consumption;
- expanding production while controlling operating costs;
- evaluating sustainability or waste-reduction initiatives; or
- considering upgrades to an existing dust collection or ventilation system.
Stop Treating Recoverable Resources as Waste
The objective of resource recovery is not simply to collect dust.
It is to understand what is being collected, what is being exhausted, what those resources are worth, and whether recovering them makes economic sense.
Air Dynamics evaluates the complete manufacturing process to identify opportunities for material reclamation, air recirculation, heat recovery, and operating-cost reduction.
Let Air Dynamics evaluate what may be leaving your process—and what may be worth recovering.