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Powder/Bulk Solids

The Source for Dry Processing and Bulk Handling Technology

Drying & Evaporation

February 16, 2010

 

80731.tif Dewatering-Drying System

This dewatering-drying system consists of a 30-in.-diam circular vibratory screener that removes oversize and undersize particles and up to 50 gal of water per minute, integrated with a 40-in.-diam circular fluid bed dryer that dries up to 700 lb of on-size particles per hour. Circular (versus rectangular) configuration of the fluid bed dryer consolidates system components, eliminates the need for heavy-gauge walls and braces, has fewer weld seams, cuts cleaning time by more than 50%, allows downsizing of vibratory motors, requires only one air inlet and outlet, and reduces cost, especially when finished to 3-A, FDA, and BISSC standards. Kason Corp., Millburn, NJ 973-467-8140 www.kason.com

80732.tif    Vacuum Dryer Seals

Two challenges in drying abrasive slurries are contamination of product by packing flecks and loss of vacuum. For most, the greater the vacuum, the shorter the batch time, and the more profitable the process. MECO’s fully-split ExPac shaft seal accommodates thermal shaft growth, so it effectively holds vacuum in a dryer. Users have reported ExPac seals holding as little as 2–3 torr of vacuum, resulting in cycle times 20–50% shorter than with previous seals.  Woodex Bearing Company, Inc., Georgetown, ME 800-526-8800 www.woodex-meco.com

80730.tif                                                                                              Dryer/Cooler

The Ventura 130 is a fluid bed dryer/cooler that is capable of delivering the same drying capacity as a standard fluid bed dryer, while using a fraction of the energy. Nearly all latent heat is recovered and reused with this unit. In most applications greater than 4% moisture, the unit will use approximately 1200 Btus per pound of water evaporated or less. The higher the input moisture, the lower the Btus required per pound of water evaporated. Energy savings are guaranteed. Ventilex USA Inc., Middletown, OH 513-874-4451 www.ventilex.net