Atmospheric Double Drum Dryers
Atmospheric Double Drum Dryers (ADDD) are the most versatile and widely applied type of drum dryer because of their product versatility, high drying efficiency, low operating cost and long term operational reliability. They are effective for drying foods, chemicals and pharmaceutical products of varying densities and viscosities.
Product Details
Utilizing thin film continuous drying via conductive heat transfer, these dryers are used to dry hundreds of various types of food, chemical, environmental, and pharmaceutical materials of widely varying densities and viscosities. Temperature sensitive products can be successfully dried since exposure to temperatures above the (atmospheric) boiling point is limited to only a few seconds.
Consisting of two rotating saturated steam pressurized drums, one fixed and one adjustable to permit complete control of product film thickness, requires the drums to be machined to exacting tolerances with perfectly matched lengths. Standard drums can be constructed of cast iron or fabricated steel with pressure rating of 160 psig and complies with current ASME or PED Pressure Code Directives. Non-standard drums can be supplied to conform to other national design and construction codes.
FEATURES & BENEFITS
Atomospheric Double Drum Dryer
Due to the hundreds of various types of products and operating environments, almost all aspects of a drum dryer’s mechanical design, operating components and ancillary equipment can be customized to meet each individual process design needs. The vast majority of Buflovak single drum dryers are installed on a production- guaranteed basis because the specific process (chemistry) design was tested and then pilot-run in the Buflovak laboratory, which provided reliable scale-up data for correct dryer configuration and drum surface area to meet each individual process design application.
Provide Your Design Requirements
This chart is an example of the flexible atmospheric single drum dryer surface area range to meet your specific dry product production rate. The drum length of any given drum diameter can be adjusted for exact drying surface area requirements to meet and balance upstream (liquid) process and downstream (dry solid) capacity design.
| ADDD Model Sizes | Total Drying Surface Area |
|---|---|
| 6×8 ADDD | 2.0 sq ft |
| 12×18 ADDD | 9.4 sq ft |
| 24×24 ADDD | 25.1 sq ft |
| 24×48 ADDD | 50.3 sq ft |
| 32×52 ADDD | 72.6 sq ft |
| 32X72 ADDD | 100.5 sq ft |
| 42X60 ADDD | 109.8 sq ft |
| 42X120 ADDD | 219.9 sq ft |
| 48×156 ADDD | 326.0 sq ft |
| 60×144 ADDD | 377.0 sq ft |
| 60X180 ADDD | 471.0 sq ft |
| 72X120 ADDD | 565.0 sq ft |
| 72X240 ADDD | 753.6 sq ft |
Sample Applications
Testing & Lab Rentals
Test your materials in one of our world-class pilot scale testing facilities. The Buflovak Research & Test Center located in Tonawanda, NY provides access to multiple dryers, flakers, single and double drum units, and cast iron and chrome plated drums. CPEG’s Innovation Center & Testing Lab in Louisville, KY, provides access to a variety of additional process equipment technologies for multistep processing. Lab rentals are available when it is not feasible to perform testing at one of our facilities.