April 6th, 2010 Munters DH Systems for Bulk Storage / Pneumatic Conveying Presented by: Andrew Cook Segment Manager

Humidity and Dewpoint Control Hygroscopic Material Conveying / Storage Eliminates Clogging and Sticking Eliminates Product Waste Improves Product Consistency Spray Drying / Instantizing No clogs in product collectors Allows smaller fluid beds Increases throughput of towers Candy Packaging Avoids clogged equipment Reduces cleaning frequency Allows fast wrapping with polypropylene Candy Pan Coating Improves surface finish Speeds water-based drying Eliminates picking & sticking Low-Temperature Drying Improves product quality Fast drying at low temperature Enrobers Eliminates skirting Eliminates condensation Improves sanitation

Cooling-Based Dehumidification Air is circulated across a cold coil and cooled to saturation Further cooling condenses moisture from the air stream Dew point reduction is limited by minimum practical coil temperatures Air is delivered at saturated conditions

Psychrometric Plot Psychometric Plot Of Design Conditions for Below Freezer DP Applications (Cooling Only) 40 140 35 120 30 Enthalpy - Btu per Pound of Dry Air 100 25 PRODUCTION AREA AT 45-50°F Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) 80 20 60 15 FROST 40 10 ICE 20 -10 -10 10 20 30 40 50 60 70 80 90 100 110 Dry Bulb Temperature °F

Cooling Coil Performance FROST FOG 25 °F 19 gr/lb 70°F 56 gr/lb

Standard Desiccant Dehumidification The dehumidifier is based on Munters unique Honeycombe® sorption drying wheel: Process air passes through the drying wheel and leaves the dehumidifier as dry air Heated reactivation air collects the moisture absorbed by the drying wheel and leaves the dehumidifier as wet air Air supplied to area has dewpoint below freezing Supply air acts as a sponge,

Psychrometric Plot Dehumidification with Desiccant Latent Heat of 40 140 35 120 30 100 Enthalpy - Btu per Pound of Dry Air 25 80 Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) 20 Latent Heat of Conversion 60 15 40 10 20 -10 -10 10 20 30 40 50 60 70 80 90 100 110 Dry Bulb Temperature °F Dehumidify to 5.5 gr/lb. or Lower

Benefits of Dehumidification Hygroscopic materials don’t stick together Products flow freely through conveyers and hoppers Improved product quality with finished product (no clogging) Eliminates condensation dropping onto product - hygiene risk Prevents costly shutdowns, production interruptions and product loss Return to production quicker Product clogging often results in downtime. DH helps dry cleaned equipment.

Applications Silo Conveying Mixing and blending Drying- fluid bed, spray tower Coating

Storage – Silo Prevention of clogging Elimination of condensation Prevents mold growth Once through system Prevents mold growth Removes condensation Stops caking Dry air Sizing Typically .5 AC/H for the volume of the silo (once through system)

Pneumatic Conveying As air is compressed and the air volume decreases Mixing Vessel Silo Munters Unit Vacuum Pump Filter Valve As air is compressed and the air volume decreases The moisture content of the air remains the same, causing the dewpoint to shift and increase High humidity will be absorbed by product, or can stick to line especially on cold spots.

Pneumatic Conveying Sizing Customer / Designer will know CFM required for conveying. DP should be known. If not, consult Munters DH handbook for different materials and moisture content. Post Cooling is typically done outside of the Munters System. Typically, high pressure fans are used for conveying. Typically, once through systems.

Storage Reduces waste in storage Prevents sticking and lumpy material Prevents mold Eliminates condensation (ice) Prolongs shelf-life and quality

Storage Solution Perform a moisture load calculation. Understand at what RH product is in equilibrium.

Spray Tower Problems Production rate varies by season Top Production rate varies by season Drying time too long Inconsistent quality of the powder Non predictable parameters Production stops Product scrap Lack of flexibility Wall Sweep Static Bed Pneumatic transport Powder

Actual Example of Drying Time Summer vs. Winter Batch consists of 4 cycles Summer cycle 110 min. Winter cycle 90 min. Prep is down time between cycles Winter batch 20% faster processing time Lets look at this problem a little closer- The Granulation process was run in batches. Each Batch consisted of 4 drying cycles, In summer cycles took approx. 110 minutes to complete In winter cycles took approx. 90 minutes to complete. Prep time was the down time between batches, you will note on the chart at right that the prep time was a little longer for summer than winter, this was due to inefficiencies as the workers were required to work longer in addition to the rounding of overtime hours worked When 4 cycles were added together to become a batch and they compared winter to summer they found that winter batches took approximately 8 hours to complete and summer batches took approximately 10 hours. Chart at right shows Drying,prep, and total for both summer and winter in minutes. notice the substantial drop in batch drying time, cycle time reductions resulted in approx. 16% of the savings in production time add to this the prep savings time and you have a 20% overall savings in production time

Spray Dryers, Munters Approach Using desiccant technology to dry the outside air required for the process. Use Munters GTR Rotor. Provide a consistent low dew point (winter time conditions). Customer will know CFM required (once through systems). A contrario, si l’air est maintenu à 2 g d’eau par kg d ’air en sortie d ’un déshydrateur il n’y aura dans les mêmes conditions que 200 l d ’eau introduit dans la tour soit 1000 l de moins par heure. Ce qui signifie qu’en été, dans les conditions citées, c ’est 1 m3 d ’eau qui ne sera plus introduit par heure en plus de la solution liquide. On comprend immédiatement pourquoi l ’air sec permet de maintenir la production constante. Il est à noter au passage que le déshydrateur augmente également la température ce qui sera source d ’économie d ’énergie.

Pharmaceutical Fluidized Bed Drying Manufacturing process include the drying of product in a fluidized bed Manufacturer noticed slower production rates in summer vs. winter -First, lets take a look at the application. -solid dosage compounds (working with powders in a granulating area) -The manufacturing process we will be concentrating on is the drying of product in a Fluidized bed Drying system

Fluidized Bed Drying Approach Supply dry air into the fluidized bed. Delivered DP is typically know based on specific product. Usually, once through systems. Too dry can be an issue so humidification and heating may be required during winter months.

Pan Coating Issues Length of drying time Soft coatings Picking (coating sticking imperfections) Other quality issues.

Pan Coating

Munters Advantages Better product uniformity Coating becomes harder Less picking (coating sticking imperfections) Sugar liquid can be applied faster, increasing capacity without adding pans Overall hygienic advantages

Cooling Tunnel 2 2 1 1 Reactivation Air Inlet Reactivation Air Outlet Munters 1 1

Free Flowing Powders

Customer Base Kellogg’s - Cooling Tunnel, Packing Kraft - Cooling Tunnel Publix - Hopper Dryer, Drying Freeze Wrigley - Coating, Drying Tunnel, Packing, Drying Hopper Masterfoods - Pneumatic Conveying Hershey - Drying Tunnel, Coating, Mixing Nestle - Pneumatic Conveying, Coating, Cooling Tunnel General Mills – Pneumatic Conveying

Other Potential Customers Symrise Little Lady Foods Wild Flavors Caravan Ingredients Basic American Foods Continental Mills Lesaffre Yeast Corporation Kerry Inc (Yeast)

End User Products Candy Bakeries Flavors Fragrances Dehydrate Products Pharmaceutical Whey Starches Milk Yeast Food Coloring Coffee Soup

New Literature

Market Strategy Be first to the customer: This is not a new application. Bry-Air is heavily into this market (and cheaper). Understand our competitive advantage: Long history of working in this industry. Better product. PowerPurge Create specifications around Munters, and make the competition match (energy). HCD product line has served this industry well. Use ICA when double wall is important to the customer / process.

Action Plan On 5/20/10, potential customer list to be distributed to Sales Force (will include end users for spray dryers and other hygroscopic materials). By 5/20/10, Webinar Presentation to be posted on line. By 5/20/10, Representative Copy of presentation to be posted on line.

Questions???