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1/6 CANDY, CHOCOLATE & CONFECTIONERY Candy & Confectionery Imtech DryGenic dehumidifiers are a leading choice to maintain production rates and ensure high quality throughout a wide scope of candy and confectionery manufacturing processes. The Imtech DryGenic systems provide a better environment with energy, space and cost savings. YOUR PARTNER IN DEHUMIDIFICATION Imtech DryGenic systems have brought over 50 years of desiccant dehumidification experience to the candy and confectionery industry. Imtech DryGenic equipment delivers cool, dry, sterile air throughout the production and/or storage process. The absence of moisture in processing and storage translates to less opportunity for contamination and growth of bacteria, mold and fungi. The Imtech DryGenic system removes up to 97% of all airborne bacteria, mold and fungi from the air stream and kills them. The benefit here is bacteria free air during candy production, a plus-benefit to your operation. Imtech DryGenic can also eliminate the problem of “wet” cooling coils, which are known breeding grounds for bacteria and mold growth. At long term storage this only adds to product quality. Imtech DryGenic can control temperature and humidity as required, delivering desired levels even with varying air inlet conditions. FORMING APPLICATION Imtech DryGenic deliver the correct level of humidity during the candy forming process. Humidity control will prevent the candy from sticking to itself as it is formed and from sticking to equipment. Humidity also ensures that the candy is formed to the desired shape and texture. It will also reduce sanitation problems and keep the candy from falling from the forming equipment. PANNING APPLICATION Providing dry air to coating pans with a Imtech DryGenic system results in more rapid and even evaporation of water from the product. This ensures less picking and harder coatings to enable production capacity to be increased without the addition of extra pans. Using a Imtech DryGenic dehumidifier, there are significant energy savings to be realized, often up to 45% less energy than dry desiccant equipment or conventional refrigeration.

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Page 1: CANDY, CHOCOLATE & CONFECTIONERY - Drygenic · 1/6 CANDY, CHOCOLATE & CONFECTIONERY Candy & Confectionery . Imtech DryGenic dehumidifiers are a leading choice to maintain production

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CANDY, CHOCOLATE & CONFECTIONERY

Candy & Confectionery

Imtech DryGenic dehumidifiers are a leading choice to maintain production rates and ensure high quality throughout a wide scope of candy and confectionery manufacturing processes. The Imtech DryGenic systems provide a better environment with energy, space and cost savings. YOUR PARTNER IN DEHUMIDIFICATION

Imtech DryGenic systems have brought over 50 years of desiccant dehumidification experience to the candy and confectionery industry. Imtech DryGenic equipment delivers cool, dry, sterile air throughout the production and/or storage process. The absence of moisture in processing and storage translates to less opportunity for contamination and growth of bacteria, mold and fungi. The Imtech DryGenic system removes up to 97% of all airborne bacteria, mold and fungi from the air stream and kills them. The benefit here is bacteria free air during candy production, a plus-benefit to your operation. Imtech DryGenic can also eliminate the problem of “wet” cooling coils, which are known breeding grounds for bacteria and mold growth. At long term storage this only adds to product quality. Imtech DryGenic can control temperature and humidity as required, delivering desired levels even with varying air inlet conditions. FORMING APPLICATION Imtech DryGenic deliver the correct level of humidity during the candy forming process. Humidity control will prevent the candy from sticking to itself as it is formed and from sticking to equipment. Humidity also ensures that the candy is formed to the desired shape and texture. It will also reduce sanitation problems and keep the candy from falling from the forming equipment.

PANNING APPLICATION Providing dry air to coating pans with a Imtech DryGenic system results in more rapid and even evaporation of water from the product. This ensures less picking and harder coatings to enable production capacity to be increased without the addition of extra pans. Using a Imtech DryGenic dehumidifier, there are significant energy savings to be realized, often up to 45% less energy than dry desiccant equipment or conventional refrigeration.

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COOLING TUNNELS APPPLICATION The use of Imtech DryGenic systems to deliver cold, dry air to cooling tunnels can prevent frost forming on cooling coils and eliminate shutdown time for defrosting and cleaning. The product can be tunnel cooled at a faster rate, increasing production and allowing the use of even colder air if that is a benefit to the process. PACKAGING APPLICATION Imtech DryGenic desiccant dehumidifiers provide a dry atmosphere during packaging operations, ensuring that your product does not regain moisture from the air. Maintaining the proper humidity will prevent candy from becoming sticky and causing handling problems and slower packaging rates. With controlled humidity the candy also has less surface softening. The Imtech DryGenic advantage provides each candy maker with the optimal conditions for packaging and ensures quality appearance of the finished product.

STORAGE APPLICATION Imtech DryGenic systems reduce humidity levels in storage facilities and warehouses. Controlled lower humidities can extend storage life and still maintain the desired quality levels of your product. This allows the candy manufacture to build inventory in advance of seasonal demand without the fear of product degradation or container damage. It gives the candy manufacturer the ability to store finished product longer under ideal temperature and humidity conditions.

EXAMPLE PACKAGING APPLICATION At this candy plant, the Imtech DryGenic air is supplied to candy forming and cooling as well as to the wrapping areas. Separate conditioner units were used for these areas but they were combined into a single regenerator. Conditioner unit for forming & cooling areas Due to pressurization and exhaust requirements, the forming/cooling system (figure 1) was 100% outside air, pre-cooled on a cooling coil to remove the “easy” water from the air.

Figure 1 Forming & cooling areas

Conditioner 10ºC, 7.7 g/kg 11ºC, 1.5 g/kg

Cooling: 120 kW Chilled water: 4ºC

FORMING & COOLING AREAS

Outside air 20,000 m3/h

To central regenerator

16ºC, 35% RH

20,000 m3/h

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A Imtech DryGenic model 1000 VPT unit then reduced the air to 11ºC, 1.5 g/kg. This air plus recirculated air cooling units, then held the space at 16ºC, 35% RH. The Imtech DryGenic used 120 kW of coolant. Conditioner unit for wrapping areas The wrapping area had a separate Imtech DryGenic air system (figure 2) which consisted of 20% outside air and 80% return air. Again, chilled water of 4ºC was used as the coolant. The Imtech DryGenic delivered 14ºC, 2 g/kg, 20% RH air to the space, where again supplemental cooling then controlled 21ºC, 35% RH.

Central regenerator for the two conditioners Using a common regenerator (figure 3) reduces investment cost, minimizes equipment room floor space requirements and uses only one regenerator air inlet. The single regenerator saves on duct work penetrations, reduces steam and condensate piping, reduces controls and the best of all less heat energy. Numerous conditioners could be combined onto a common regenerator. In this case, only two conditioner dehumidifiers comprised the system. One common 10P regenerator for these two Imtech DryGenic units required a maximum of 550 kg/h of low pressure (3 bar) steam. A solution heat exchanger was used in the system to further reduce the already low energy requirements for the system.

Regenerator 5,400 m3/h

To conditioner Wrapping

To conditioner Forming & Cooling

Heating steam: 550 kg/h

Outside air Exhaust to outside

Figure 3 Central regenerator

8,100 m3/h

Figure 2 Wrapping areas

Conditioner 14ºC, 2 g/kg

Cooling: 90 kW Chilled water: 4ºC

WRAPPING AREAS

20% Outside air

To central regenerator

21ºC, 35% RH

80% Return air

20,000 m3/h 20,000 m3/h

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EXAMPLE PANNING APPLICATION Flexibility is a unique feature of a Imtech DryGenic system. If a candy manufacturer would like to combine operations and separate the conditioner/ dehumidifier from the regenerator with either vertical or horizontal distance, a Imtech DryGenic dehumidifier can comply. In this combined panning and packaging handling, the Imtech DryGenic system combines outside air and return air from the packaging area. 13ºC and 20% RH air was delivered to the packaging room where ceiling hung recirculated air cooling units handled sensible loads 2,500 m³/h was used directly off of the Imtech DryGenic units for two pans.

This air plus pressurization air for the packaging room were made up by the outside air. The 800 VPT conditioner was sized to handle a “washdown” load for the packaging room. During normal operations, this unit removed 115 kg/h of water from the air. However, after a washdown cycle, the unit removed 160 kg/h of water and dried the space completely in two hours. The 5P regenerator was located in a boiler room 15 meter from the 800 VPT conditioner location with small piping connecting the two units. The Imtech DryGenic system brings many benefits to such an application including: handling two humidity requirements in one unit; drying the packaging room in two hours after wash-down; and separate conditioner and regenerator units to accommodate space availability. Imtech DryGenic systems are flexible to meet your needs.

Figure 4 Panning

Recirculation 8,000 m3/h, 24ºC, 6.5 g/kg

Conditioner

Regenerator

Cooling: 140 kW Chilled water: 6ºC

Heating steam: 225 kg/h

HARD CANDY PACKAGING

21ºC, 35% RH

TO 2x PANS 2,500 m3/h, 13ºC, 1.7 g/kg

21ºC, 8.7 g/kg

8,000 m3/h

22ºC, 7.6 g/kg

16,000 m3/h

13ºC, 1.7 g/kg

16,000 m3/h 13,500 m3/h

13ºC, 1.7 g/kg

Outside air 2,700 m³/h

Exhaust to outside 4,000 m³/h

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STORING APPLICATION This Imtech DryGenic system controlled a multilevel candy storage warehouse at 21ºC and 35% RH Sensible or temperature control was handled by air handling units on each floor that cooled the air as required to maintain 21ºC. The single Imtech DryGenic unit then fed 12ºC, 1.4 g/kg air to each floor and maintained the proper 35% RH required. This 30,000 m³/h Imtech DryGenic used 60 kW chilled water of 6ºC. The regenerator was a 5P, which requires 2,700 m³/h for regeneration.

This low regeneration air volume minimizes energy requirements, equipment room space and utilities. Only 200 kg/h of 3 bar steam was needed for the regenerator. This low percentage of regeneration air is unsurpassed in dehumidification equipment.

Figure 5 Storage

Conditioner

Regenerator

30,000 m3/h

Cooling: 60 kW Chilled water: 6ºC

Heating steam: 200 kg/h

WAREHOUSE

21ºC, 6.5 g/kg 35%RH 10ºC, 4 g/kg 12ºC, 1.4 g/kg

30,000 m3/h

Outside air 2,700 m3/h

Exhaust to outside 4,000 m3/h

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Imtech DryGenic P.O. Box 24002, NL-2490 AA Den Haag tel. +31 70 4523000, fax +31 70 4523003 INTERNET www.drygenic.com e-mail [email protected]

DG-APPL-CANDLL01ENG.DOC

IMTECH DRYGENIC Imtech DryGenic unite dehumidification expertise and customer focused service to each application. For over 50 years Imtech DryGenic have manufactured dehumidification systems and is recognized globally for expertise, quality, service and in providing innovative solutions for complex dehumidification processes. The requirements in, for instance the food, electronic and pharmaceutical industries are frequently adjusted. To serve the changing needs of industrial, institutional and commercial users, new product lines are being continually developed. The Imtech DryGenic systems come in variety of configurations depending upon air volumes, temperature range, available energy and any need for additional biocidal capacity. The systems keep the air at a constant, precise humidity regardless of weather conditions or load variations. DrySol, air drying with a liquid The Imtech DryGenic principle is simplicity itself. All the dehumidifying systems of Imtech DryGenic are based on the drying properties of a liquid hygroscopic solution called DrySol. The amount of moisture which DrySol will take out is directly related to the concentration and temperature of the solution. DrySol is a non-toxic bactericidal solution, which, when sprayed into an air stream, effectively removes bacteria and specific viruses from the air. ADVANTAGES IMTECH DRYGENIC SYSTEM • Panning operations to provide a sugar coating with the correct gloss and thickness

consistently and while realising energy savings; • humidity conditioning of process to ensure efficient panning of soft chocolate or peanut

butter or peanut butter centres; • product storage in buildings over 40,000 m² using a single Imtech DryGenic system to

control humidity on multiple floors, also for smaller facilities of 20,000 m²; • gum ball or chiclet panning to provide uniform drying and correct gloss; • elimination of condensation on cooling belts and devices to maximize production rates,

reduce costly shutdown and improve sanitation; • reduction of cooling tunnel time for a bar manufacturer, eliminating frost, condensation

problems and shutdown using refrigeration more efficiently; • humidity control for granola bars where low humidity air eliminates product sticking to

equipment and to one another during processing and packaging;. • chocolate storage at 20ºC, 50% RH to maximize shelf life and prevent discoloration; • reduction of operation costs through lower utility consumption; • highest energy efficiency of any desiccant dehumidifier.