Used for drying of high grade temperature and oxygen sensitive products. Highly suitable for drying hygroscopic substances which are dried to very low residual moisture content levels. Frequently vacuum drying cabinets are the sole possibility for drying lumpy, glutinous products or products of low pomposity. We are manufacturer, supplier and exporter of vacuum tray dryer as per ISI guidelines and user’s requirements since 1990 from Mumbai to India and all over the globe.

Working Principle Vacuum Tray Dryers

Vacuum tray dryer is the most commonly used batch dryer. They are either box – shaped or cylindrical shaped loaded and unloaded via a door. Inside are several heating plates mounted one above the other on which the product is placed in trays .The Top of both heating plates (Shelves) and the bottom of heating shelves trays should be as smooth as possible to permit optimal heat transfer between plates and product. The medium flowing through the heating plates is water, steam, or thermal oil. The distance between the heating plates is determined primarily by the surface loading and the foaming of the product. To avoid retrograde condensation, the cabinet walls are indirectly preheated by limpet coil provided on the outer side of the body (Optional). Only after all the product trays reach the same 

Working Principle Agitated Vacuum Dryers

The entire drying chamber is well machined to bring about a close encounter with the agitator blade thus ensuring proper shuffling of the material and thus avoiding localised over heating. The leak proof front opening door ensures easy cleaning of the entire chamber.

The top loading and bottom unloading facility provides for easy charging and discharging of the material. The cyclonic trap prevents the fine dust of the dry material from flying into the vapour condenser. The condenser and the condensate collection tank prevent the vapours from entering the vacuum pump. Appropriate vacuum pump and accessories are provided with the unit with valves to adjust the right vacuum in the unit. The entire unit is mounted on a steel frame.

Rotary double cone vacuum dryers are suitable for drying & mixing powder (raw materials), pharmaceutical materials, crystalline products, insecticides, pesticides, food products & also for heat sensitive products. The equipment can also be used as rotary evaporator. Promas Engineers is a certified company for manufacturer, supplier and exporter of rotary double cone vacuum dryers according to ISI guidelines and user’s requirements since 1990 from Mumbai to India and all over the world.

Air tray dryers are the most commonly used drying system after sun drying. Promas Engineers dryers are specially designed to have better efficiency than any other dryer, available from other tray dryer manufacturers. Promas Engineers dryers are now more accepted brand in the industry than any other brand in market. Our clientèle base is in Pharmaceutical, Chemicals, Dyestuff, Textile, Food, Automobile & many other industries. We are manufacturer, exporter and supplier of air tray dryers as per ISI specifications and user’s requirements since 1990 from Mumbai to India and all over the world.

The atmospheric air is sucked in the dryer through 5/10 micron filter by an efficient dynamically balanced fan driven by an electric motor. The clean air then passes over the electric heaters steam or oil radiator provided with temperature controller. The hot air passes through the product and fluidisation dries the product. Dryer is provided with dehumidifier (Chilled water system) at the inlet of the dryer so as to dry the product at low temperature under fluidized condition. The blower speed is controlled by A. C. frequency drive so as to control the fluidisation avoiding choking of the filter bag. A raking system provided to avoid lump formation in the container to achieve uniform fluidisation & uniform drying. A model with complete automation and PLC, automatic bag shaking and with mimic is also offered. Promas Engineers is manufacturer, supplier and exporter of fluid bed dryers according to ISI guidelines and user’s requirements since 1990 from Mumbai to India and all over the world.