Dust Collection System Design

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Date
2015-12-07
Authors
Broeska, Sergei
Haiko, Sarah
Parker, Cameron
Stubson, Gaelen
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Decor Cabinet Company in Morden, Manitoba has sponsored The Dustbusters Consulting Group through the University of Manitoba’s MECH 4860 design course. This partnership was created for the Dustbusters to conduct an engineering analysis of Decor’s current dust collection system at the door manufacturing plant. The current system requires an upgrade. The dust collection system uses a fan to draw sawdust from workstations through ductwork to a baghouse filter where the dust and air are separated prior to returning the clean air to the building. A current system analysis identified that Decor cannot simultaneously run all the machines due to an undersized supply fan, inefficient duct runs and an undersized dust collector baghouse. Additionally, as requested be Decor, Ecogate technology was researched but is not recommended for installation due to a poor payback period of 15 years. We recommend replacing the existing supply fan with a 200HP New York Blower Class IV SWSI blower complete with an abort gate. The blower has a variable frequency drive controlled by anew control panel. It is recommended that the current dust collector be replaced with a Donaldson Torit 570RFWPH10,which also requires a new control panel package and rotary valve. The option to purchase a new screw conveyer with auxiliary parts is recommended. Additionally, multiple duct runs should be upgraded to decrease pressure loss and comply with NFPA’s recommendedminimum3500 FPM duct velocity throughout the system. To decrease production downtime, new duct layouts are designed parallel to the existing ducts. Furthermore, Decor requested we upgrade the supply air system, which currently returns cold air into the building at start-up. We recommend that they insulate the exterior duct on the return air side of the dust collector with 2 inch insulation and with an aluminum jacket. The payback period of insulating the exterior duct is within one winter season. The total cost of all recommendations is approximately $410,000. This price excludes tax, installation and freight fees. This report provides a recommendation that meets standards, has adequate capacity and allows Decor to simultaneously run all woodworking machines.
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