Flash Dryers

Flash Dryers (Agitated, Swirl, Turbo) Dryers & Coolers

Flash dryers are essentially pneumatic dryers. Flash dryers offer an effective method of removing surface or unbound moisture from a feed product. The technology behind flash drying employs a low residence time within the actual dryer; thus, the unbound moisture is “flashed” off the feed.

Mining

Metalurgy

Engineering

The types of Flash Dryers We supply.

Working Principal

Flash drying systems use a heated carrier gas (usually, air) to pneumatically convey the feed through the flash dryer (flash tube) and into a primary gas-separation device (most commonly, a cyclone or series of cyclones in series or parallel).
The carrier is heated the desired operating inlet temperature in hot gas generator. The feed induced or forced into throat or on an agitator driven vertically or horizontally. In the feed throat, the gas entrains the feed, and the moisture is evaporated quickly as the product is conveyed through the system to the primary gas/product separation device.

As the entire product is entrained in the gas stream, both primary product collection (typically, cyclones) and secondary and tertiary dust collection such as multi-clones, bag houses, Or for Gas Cleaning Scrubbers are installed to meet emission limits.
Flash drying is a continuous process with the dryer being either directly or indirectly fired. They are inherently co-current dryers with the hottest air contacting the wettest product. They operate at inlet temperatures varying from ambient dehumidified viz 104^oF (40^oC) air for sensitive products to more than 1,100^oF (600^oC) for robust products.

Higher inlet temperatures also increase the overall dryer efficiency.

FEATURES OF RAYGM FLASH DRYERS:

BENEFITS AND USES OF RAYGM SPRAY DRYERS.

Relatively simple in operation.
Small Foot prints.
Require lower capital investment than other types of dryers.
Excellent choice for processing heat-sensitive or easily oxidized feed materials.
Product inventory in the flash-drying system is very low
Easy to change product or product grade with minimum downtime
Control system responds very quickly to operational changes

Continuous processing with short drying time. Low residence time, minimum exposure to save original product quality.
Produces free flowing powders in agglomerated or granulated form.
Appropriate velocities are maintained inside the drying chamber to avoid any build-up. Special air distribution device, reducing the resistance of the device, and effectively improve the dry material uniformity.
Ideal for heat sensitive products as particle temperatures are kept low throughout the drying process.
Efficient Mixers and Lump breakers with partial drying arrangement for lowering Drying Cost. Drying is completed at low outlet drying temperatures, giving high energy utilization efficiencies.
High drying efficiency and low energy costs lowering drying cost.
Low operator overheads and minimum maintenance costs.
Pressure shock-resistant chamber for safe drying of organic products.
Continuous production machine without human touch.
Ideal replacement for tray drying of wet cakes.
Extremely sticky/pasty wet cake can be handled.
Particle size as fine as 500 mesh is achievable. The drying chamber is equipped with grading ring and swirl pieces, to adjust fineness and final moisture.
Can be the directly dry into a uniform powder product, eliminating the need for crushing, screening processes. Which will lower the load on ACM mills or pulveriser and the total Drying Cost.
Fully automatic - needs little running attention.
High volume processing

Design

Custom Designed to Customer Satisfaction
Horizontal Attritor or vertical Attritor type designs
Inbuilt Classifier Static or Dynamic as per product requirement.
Pressure Shock resistance Equipment designs
No materials Hold Up Design
Optimum Drying Cost with best achievable Product Quality.

Feeding Arrangement

Application

Agrochemicals
Ceramics, Minerals, Clays etc.
Food and feed products
Organic chemicals
Pharmaceuticals
Pigments and dyestuffs
Waste products from Poultry, Farms, Meat processing Industries.

Capacity

Configuration

Material

Heating Methods

Direct Fired / Indirect Fired Air Heaters: using Liquid / Gaseous Fuels
Direct / Indirect Fired Air Heaters: using Solid Fuels, Agro-Waste, Saw Dust, Rice Husk, Coal, Briquette etc.
Indirect Air Heaters: Using Steam / Hot Water / Thermic Fluid, Oil
Electric Air Heaters: using electricity.

Air-Flow Direction

Product Recovery

Emission Control

Automation & Controls

Option Features Depending on Product Properties.

cGMP construction
Closed Loop Systems with inert gas as process drying media for Flammable Solvent with Solvent recovery.
Product Conveying and Cooling Systems
Optional Safety accessories like Static Jumpers, Steam Injection, Fire Fighting System, Explosion Rupture Disc with venting duct, Flameless venting etc.
Optional Cleaning in place systems.

PARTIAL PRODUCT APPLICATIONS OF RAYGM FLASH DRYERS.

Magnesium Sulfate, Magnesium Carbonate, Copper ores, Sulfate, Dicalcium Phosphate, Ammonium Sulfate, Ammonium Phosphate, Calcium Carbonate, Calcium Phosphate, Boric Acid, Adipic Acids, Antibiotics, Salt, Bonemeal, Bread Crumbs, Starch, Gluten, Casein, Gravy Powder, Soup Powder, Vegetable Protein, Spent Tea, Soybean Protein, Meat Residue, Aniline Dyes, Bleaching Earth, Copper Oxide, Gypsum, Iron Oxide, Silica Gel Catalyst, Precipitated silica, Minerals Plastic, Polymers, Acrylic.