Due to worker complaints, outdated ductwork and collection
systems, PolyOne, a leading supplier of raw materials for the injection molding industry called upon the local Micro Air distributor, Air Purification Inc. of Raleigh, NC to help alleviate the dust problems associated with mixing, melting and grinding their raw materials into finished goods. 

One of the keys to solving the customer’s problems centered around finding a hood system that would collect the dust from the mixing and grinding stations while providing for easy installation and duct runs to the Micro Air 36 Cartridge collector mounted outdoors.  By utilizing custom, slotted backdraft hoods and clamp together ductwork, the workstations were all re-engineered to provide for easier dust pickup within the facility.

With the new duct design, it was determined the CFM needed was 18,000 at 12” of static pressure, which correlated to a need for a Micro Air dust collection system that contained 36 filters.  Again, space was an issue outside since we were replacing a competitor’s undersized unit.  The new dust collector had to fit in a location that was roughly 7 foot wide by 14’ deep.

By building a custom collector, Micro Air was able to build upwards rather than outwards with custom intake and exhaust plenums to minimize the overall footprint and stay within the space constraints.  Thanks to the efforts of Air Purification and Micro Air, all worker complaints have stopped and there is no longer dust escaping from the dump bins.
Reprinted with permission of Micro Air

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Air Purification & NASCAR

MicroAir RP6-2 Installation by Air Purification, Inc. at a well know NASCAR racing shop.

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 Need Equipment NOW?
We have a variety of used and demo equipment ready for immediate shipment.  Pictures and specifications of used equipment are available on our website.

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Case Study – A Plasma Cutting Success Story

A major manufacturer of truck bodied cranes had an application for plasma cutting of heavy steel plate ranging on size from ½” to 1 ½” in thickness. A dust collector was sized for the plasma table manufacturer’s recommended airflow; and because it was a new process and equipment, actual dust loading levels were estimated.

The original dust collector initially functioned well with the original filters expected to last approximately 12 months. However, when full production began after a 4 month ramp up in production, it became evident that the filters were not sufficient to handle the extremely heavy inlet loadings. A process change to coating the bare steel with a rust preventative created a situation that finally pushed the filter life into an unacceptable range. Due to the new adhesive nature of the smoke and dust particles, the stickier particles were reducing the filter cleaning effectiveness and the filters were lasting now only 3-4 weeks

After numerous attempts to change the media and revise the filter pulse system, the customer and API decided to replace the existing collector with a MicroAir Model RP8-4 with the Intellitouch control system. With the new system, the airflow available to the plasma table was increased from the initial 3800 CFM to 4900 CFM for better smoke scavenging. All existing table ducting and spark dropout chambers were functioning well, and were retained. API removed the old collector and installed the RP8-4 with a new fabricated inlet header configuration.  The equipment change out was accomplished in approximately 1½ days, without interrupting the manufacturing production schedule

The Intellitouch system allows the airflow to be user adjusted for maximum efficiency, and then be held at that level as the filters load by gradually increasing the fan RPM to compensate. Target filter life for the new dust collector was a minimum of 3 months. The RP8-4 filters have lasted 8 months and are still providing the increased airflow for complete capture of the plasma smoke. Plant air quality has been greatly improved by the switch to the RP8-4 collector and unscheduled maintenance issues have been reduced to zero.

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Upcoming Trade Shows

Look for our booth at the following shows. Our website also has the latest trade shows where Air Purification, Inc. will be exhibiting.

• Oct. 8th & 9th: Knoxville Industrial Expo – Knoxville Expo Center, Knoxville, TN
  
  
• October 15 & 16: Carolina Industrial & Facility Maintenance Show, Carolina First Center,Greenville,  SC
  
  
• October 22 & 23:  Design2Part Show, Gaylord Opryland Convention Center, Nashville, TN
  
  
• Nov. 5th & 6th – Roanoke Industrial Expo – Roanoke Civic Center, Roanoke, VA
  
  
• November 19th & 20th:  2008 Capital Building and Facility Maintenance Show, Dulles Expo Center, Chantilly, VA 

NEWSLETTER
Volume 6
Summer 2008

Also In This Issue

• NASCAR Solution

• Used Equipment for Immediate Shipment

• Plasma Cutting & Dust Collection

• Upcoming Trade Shows

Previous Newsletters

Hexavalent Chromium Smoke 

Air Pollution Testing Lab

Dust Collector Fire Protection

Osha Update

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