Many companies employ a Chemical Drier somewhere within their processes. On the Powder Technology Ltd web-site we list the complete range of Powder Drier, that we offer to the Pharmaceutical, Food or Chemical Industries. A Vacuum Tray Drier or Conical Drier can both be used as a Powder Dryer in these industries.
The Pink range of Vacuum Tray Drier are designed to provide a benign environment for the gentle removal of water or solvents under a vacuum. The quality of build of our Vacuum Tray Dryer is unmatched within the industry and provides an easily cleanable GMP finish.
Drying under vacuum is a widely used thermal process in many branches of industry. The objective of a vacuum drying oven is to promote gentle drying of high quality and value products containing water or solvents, without affecting any of the product characteristics.
During vacuum drying the pressure is reduced within the oven so that the water or solvents begin to evaporate at lower temperatures. The rate of drying can thus be optimized by careful control of the temperature and pressure.
A vacuum drying oven therefore consists of an oven with shelves for trays, a heating system, and a vacuum system, all kept in balance by a precise control system.
Here we can see a vacuum oven drying system from PINK as used by a company in the food industry.
Model VT 600-960-1050-6
Patented Systems for Perfect Cleanliness
PINK Vacuum Drying Ovens are designed with
patented features guaranteed to meet the most stringent cleaning regimes.
All parts coming into contact with the product are manufactured either
from high quality stainless steel, Hastelloy, Inconel, or Titanium. All
surfaces are polished.
As can be seen from the photograph alongside the heated shelves and chamber walls merge without joints subdividing the
interior into individual charging chambers.
Vacuum drying oven VSD with five compartments and CIP lance.
This cleaning lance has one spray head per compartment.
Insert photograph of CIP cleaning device, and the five compartment oven.
This device consists of a vertical lance complete with electric or pneumatically driven spray heads.
The cleaning lance is located in the oven chamber, between the door and the shelves. The drive unit is located on top of
the oven. The lance is easily installed after the oven has been used. It is similarly easily removed after cleaning and
drying of both the oven and lance.
Vacuum Circulating Air Drying Oven VUT
Products with poor conduction or contained in a product carrier will suffer from slow or poor drying rates. This can be improved upon by drying under vacuum along with a circulating air-flow. The product is heated up to the requisite temperature under circulating air. When the working temperature has been reached the chamber is evacuated in order to promote drying. This cycle can be repeated several times depending upon the nature of the product to be dried.