kilburn engineering ltd.
fluid bed dryer fuel gas conditioning system tea dryers
 
 
 Range Of Products
Dryers & Coolers
Adsorption Systems
Oil Field Systems
Heat Transfer Systems
Fabricated Equipments
Material Handling Systems
Air & Dust Handling Systems
   
 
 Dryers & Coolers
Rotary Dryers, Coolers, Caliners & Kilns
Fluid Bed Dryers & Coolers
Vibrating Fluid Bed
Dryers & Coolres
Paddle Dryers & Coolers
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Spray Dryers
Tea Dryers
Coconut Dryers
Paddy Dryers
Sugar Dryers
Conveyorised Band &
Tunnel Dryers
Coal Dryers
 
   
DRYERS & COOLERS
 
SPRAY DRYERS
 
KILBURN designs, manufactures & installs Spray Dryers based on product trials taken in the Pilot Plants at its Test Centre.
 
FUNDAMENTALS OF SPRAY DRYING
 
The purpose of spray drying is to produce a powdered or granular product in one step by drying an - 'atomized' liquid feed (solution, suspension, or emulsion) in heated air or other gaseous medium. By atomizing the feed into fine droplets a very large surface area per unit mass is generated with a very short path for heat and mass transfer. The heated air supplies latent heat of evaporation to the droplets and brings about rapid drying which in turn brings about rapid cooling of the drying gas. At the same time the particle temperature is kept low by adiabatic Cooling. Drying can take place in a very short time, typically 5-20 seconds.
 
Spray Dryer
 

Spray dried particles are usually spheroidal, which give the product excellent flow characteristics. Size of the dried product particle depends on the size of the droplet from the atomizers. Different atomizers produce different particle size distribution and spray patterns. The drying air flow pattern must be carefully selected for optimum performance.

 
 
Atomization is fundamental to Spray drying
- nearly all operating and product characteristics are affected by it. To atomize the feed solution or slurry, high shear forces are applied by one of the following methods:
Spray Dryer
A
Centrifugal- accelerating the liquid off the edge of a spinning wheel.
A
Pressure Nozzle - Spinning the liquid at high velocity through a small orifice.
A
Pneumatic Nozzle - Impinging a high velocity air stream on a slow moving liquid
 
 
 
ADVANTAGES OF SPRAY DRYERS
 
A

Continuous automatic processing.

A No product attrition
A

One step processing

A Uniform free-flowingproduct.
A Cleaner operation A Precise productn control.
A Short retention time A

Operating flexibility

A Safe for heat sensitive materials A Lower maintenance cost.
 
KILBURN TOWER SPRAY DRYER
 
These versatile tower spray dryers are used for efficient drying of inorganics, catalysts, ceramics, powdered metals, pigments, dyes and similar materials. The maximum air temperature is 530 Degree Celsius when using a direct-fired gas heater. Evaporation capacity varies depending on the inlet /outlet air temperature profile and composition of the feed. The units employ cocurrent or mixed flow (counter-current) drying principle in an "open cycle" concept.

Atomization is performed by either single -fluid or two-fluid nozzles located at the top or bottom of the tower. Particle size obtained ranges upto 170 microns depending on feed composition and operating parameters. The unit is constructed out of stainless steel. Product is collected at two points-chamber bottom & cyclone collector.
Kilburn Tower Spray Dryer
 
 
PILOT PLANT OF SPRAY DRYER

Kilburn Test Centre has a versatile spray drying & processing equipment installed at its Mumbai works. Products can be thoroughiy and accurately tested prior to the design and engineering of production system.

Considering all parameters like energy consumption, space requirements, product quality expectations, drying time, heat / temperature sensitivity of product, Kilburn can recommend, design and engineer, Spray Dryer and its systems to precisely suit customer application and requirements.

The Pilot Plant at the Kilburn test centre specifically ensures an accurate scale-up from the laboratory to the production units.
Spray Dryer
 
 
 
PRODUCTS HANDLED
 
A Fluid Cracking Catalyst
A Micro-Crystalline Powders
A Magnesium chloride
A Ceramic Clay
A E-PVC
A Coffee
A Milk