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Graham Magnetics, Inc.

Year Submitted: 2003

Process: Facility Lighting/HVAC

Industry: Electronics Manufacturing

Wastes Reduced: VOC Emissions

Equipment: Carbon Absorption

Location: Graham TX

No. of employees: 420

Contact: Alan Johnson

Phone: (817) 549-4500


The purpose of Graham's Air Emissions Reduction Projects is to reduce the amount of volatile solvent which escape from the process of producing digital magnetic data storage tapes.
Because of quality and personnel protection requirements, large volumes of air must be ventilated from GMI's milling and coating operations. In the past, each of these vents were sent to the atmosphere through ducts on the top of the building. Also, because of poor air conditioning capacity, the doors to the milling area were left open to improve the ventilation. These emissions were allowed under TNRCC permits and as "grandfathered" sources.
However, after analysis of the volumes and concentrations involved, it became apparent that significant reduction in emissions, along with substantial savings, would be possible by modifying the emissions process.
Graham Magnetics currently has two fluidized and two static carbon adsorption systems on site to reduce emissions from its coating process. While these units have a fixed volume of air which they can handle, we found that the low concentration of solvent laden air in the milling and coating operations could be vented into the air intake of the coating equipment, pass through the equipment just like clean air currently does, and be vented to the control devices. This to reduces the volume of air emitted from the process, and dramatically reduces the volume of volatile organic compound emissions.
Also, a new technology for regenerating activated carbon has been developed. Addition of what is known as a Side Stream Reactivator will allow continous regeneration of the activated carbon in two fluidized carbon bed adsorbers, greatly improving the average efficiency of these control devices.

P2 Application:

The Side Stream Reactivator is "state-of-the-art" for improving the efficiencies of fluidized, activated carbon adsorbers. The idea of using a VOC contaminated air supply for our high purity oven air intakes was also a novel use of existing technology.

Environmental Benefits:

The successful implementation of this project will dramatically reduce the volume of volatile organic compound emissions from Graham Magnetics operations and has allowed GMI to reqiest consolidation of all existing TNRCC air permits to a single permit, while eliminating all "grandfathered" sources at the Graham facility and reducing the potential to emit VOC's from greater than 2,000 tons per year to 519.5 tons per year. This dramatic reduction in emissions will obviously improve the environmental quality in the Graham area.

Details of Reductions

Additional Information :

This project will result in a savings of thousands of dollars per year with a small initial investment and a greatly reduced operating expense. The project requires no additional labor force for implementation and is economically self-sustaining.

Source: TCEQ

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