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To avoid unforeseen costs and poor industrial dryer performance, consider these 10 tips when buying, specifying, operating and maintaining a convection dryer.
Convection dryers vary greatly in size, features and delivery method and design of the air and heat distribution. To meet your process requirements efficiently, it is important to select the right type of dryer for your products and processes. It is equally important, however, to properly size and design the dryer.
Tunable diode laser-absorption spectroscopy (TDLAS) can provide the advantages of continuous process control of pharmaceutical drying to manufacturers using water as their primary solvent.
The content of a dryer seminar series from Bühler Aeroglide, Cary, N.C., is designed to help attendees recognize the principles and techniques for optimal drying, regardless of the dryer make or model.
Process air temperature and retention time are two parameters that rayon producers can adjust to produce the highest quality fibers at the highest production rates.
Process air temperature and retention time are two parameters that rayon producers can adjust to produce the highest quality fibers at the highest production rates.
Continuing my discussion of the psychrometric chart and how to use it, in my last column,
I showed a psychrometric chart, plotting four points. Allow me to proceed with the topic by picking up our ongoing example and taking it further, by putting that air inside a piece of process equipment such
as a dryer or oven.
Before you can understand the complete psychrometric chart and how it is useful for sizing an industrial dryer, you first must understand the terms and the many parts that make up the whole psychrometric chart. (If you haven't read "Big Air, Part 1 (The Psychrometric Chart Unraveled)," start there.)
For the data collected during an industrial dryer audit to have some value requires understanding and manipulation of the data, ultimately resulting in a model of your system.
My "Tools of the Trade" series dealt with various instruments used in the acquisition of system
parameters. For the data collected to have some value requires understanding and manipulation of the data, ultimately resulting in a model of your system. The next few "Drying Files" will deal with the interpretation and manipulation of this data so that a better understanding of the operation can be gleaned.
Performing a "dryer audit" is a mainstay of any drying specialist, and
every reputable company that sells equipment has people specifically
trained to perform these audits. Even with vast experience and all the
necessary equipment, it takes someone skilled in the art significant
time to capture all of the pertinent field data. Thereafter, another
considerable investment is made into analyzing the data to manipulate
it into a meaningful form.
The levels of initial drying rates also may enhance and modify the quality of the final product. For example, rehydration rates for products such as instant coffee or milk tend to follow the drying rate pattern.
The levels of initial drying rates also may enhance and modify the
quality of the final product. For example, rehydration rates for
products such as instant coffee or milk tend to follow the drying rate
pattern.
