Dryers

Spray dryers are offered for feeds in liquid form containing either water or any other solvent. Feeds may be solution, slurry or emulsion. Depending on the particle size of the final product required and the nature of feed any one or combination of following atomization system is used in spray dryers.
 

•     Two fluid atomization.
•     High pressure single fluid atomization.
•     Rotary disc atomization.

We are offerng Continuous Fluid Bed Dryers with excellent efficiency. The process air is supplied to the bed through a special perforated distributor plate and flows through the bed of solids at a velocity sufficient to support the weight of particles in a fluidized state. Bubbles form and collapse within the fluidized bed of material, promoting intense particle movement. In this state, the solids behave like a free flowing boiling liquid.

• Advanced method of drying wet/semi wet solids
• Unlike in Tray Drying every solid particle is floating in the HOT STREAM of Air which is blown from down to up creating material layer in fluidised state
• Almost every wet particle directly receives the heat energy from hot Air resulting in uniform and quick drying

Features of Continuous Fluid Bed Dryers

• Very versatile process equipment for uniform and efficient drying of products.
• Fully automatic operation based on PLC control / without PLC control
• Minimum handling and more hygienic
• Lifting & tilting device of product container for easy handling
• Option - steam heated or electric heated blower
• cGMP model with documentation as option.

Material of Construction:
AISI 304 / AISI 316 / Custom made.

Accessories:
Heat recovery unit can be incorporated, cyclone, bag filters, multiclones, wet scrubber

Applications of Continuous Fluid Bed Dryers:
Chemical / Fertilizer / Food - salt, sugar / Mineral - Sand, Aluminum / Ore calcining / Metal oxidation / Sludge Incineration / Pyrolysis of Plastic Waste / Pigment etc.

Capacity available from 5 kg/hr to 2000 kg/hr water/solvent evaporation.

Operating Principle

The wet feed is continuously agitated by the heated rotating blades, thus exposing new areas to heating surfaces. This results in the moisture boiling off and rendering the material to dry to the required degree

Features of Excel Plants Paddle Dryer:

• Low running cost – contact dryer.
• Continuous production machine without human touch.
• Ideal for solvent recovery.
• Suitable for Crystalline material.
• On-line particle size reduction – no separate pulverizer required.
• Factory assembled & tested.
• Compact construction – less floor area.
• Choice of heating medium – steam, hot water.
• Minimum exhaust air quantity – no elaborate air cleaning equipment needed.
• Absence of high speed rotating parts – less breakdowns.
• Special paddle form – ploughing and self cleaning action.
• Initial particle size is maintained.

Typical Applications:

• Crystaline Solids
• Pasty Solids
• Sludge
• Agro Waste
• Magnesium Carbonate
• Polypropylene Beads

Flash dryers are used for drying of wet cakes which are sensitive to heat. There are different variations of flash dryers available depending upon the need to disperse the wet cake or pastes. These are:

Spin Flash Dryer
This consists of a horizontal agitator, which disperses the feed while it comes in contact with the hot air and gets dried.

Cage Mill Flash Dryer
This consists of a vertical pin type rotary and stationary cages. The wet feed is fed at the center of the rotating cage, where it comes in contact with hot air. The rotating cage disperses the feed while drying.

Due to very low residence time in the range of 0.5 to 2 seconds in the flash dryers, heat sensitive products can be easily dried without degradation.

Particle size of the final product can be controlled by installing a particle size controller which recycles the larger particle size back to the agitator and allows only the pre-determined size particles to be discharged as product.

Capacity: We can offer the flash dryers having capacities of 10kg/hr to 50000kg/hr product rate.

Typical applications of flash dryer are starch, bagasse, minerals, pigments and dyes, phosphates, etc.

Flash dryers are used for drying of wet cakes which are sensitive to heat. There are different variations of flash dryers available depending upon the need to disperse the wet cake or pastes. These are:

Spin Flash Dryer
This consists of a horizontal agitator, which disperses the feed while it comes in contact with the hot air and gets dried.

Cage Mill Flash Dryer
This consists of a vertical pin type rotary and stationary cages. The wet feed is fed at the center of the rotating cage, where it comes in contact with hot air. The rotating cage disperses the feed while drying.

Rotary dryers are used for drying wet powders and cakes, which are easily breakable and dispersible. The rotary dryer consists of a rotating drum with angle lifting blades which lift the feed as the drum rotates and showers it in the stream of hot air flowing through the drum.

The rotary dryers can be used as calciners using direct or indirect firing.

GMP plants are offered for pharmaceutical, food, and biochemical applications.

 

Capacity: We can offer the rotary dryers with capacity range from 100kg/hr to 50000kg/hr product rate and operating temperatures up to 600°C.

Typical applications of rotary dryers include silica sand, bagasse, minerals, coconut powder, etc.