The Pressure Spray Dryer ValuePlus Series is a continuous spray drying equipment optimized for Southeast Asian and African markets. It uses a high-pressure pump to pressurize the liquid feed and atomizes it through a pressure nozzle for drying in contact with hot air. Compared to centrifugal spray dryers, it is more suitable for producing powder products with larger particle size, higher bulk density and better flowability, especially widely used in detergent, dye and ceramic industries.

Working Principle

The filtered liquid feed is pressurized to 2 to 20 MPa by a high-pressure plunger pump and atomized into a conical liquid sheet through a pressure nozzle, which then breaks into droplets. The droplets come into contact with filtered and heated hot air in the drying tower (co-current, counter-current or mixed-flow configurations available), and moisture evaporates rapidly, drying into solid particles. The product is collected at the tower bottom and by a cyclone separator, while exhaust gas is dedusted and discharged.

Optimizations for Southeast Asia & Africa

• Cost-effective configuration: optimized high-pressure pump and nozzle selection to reduce equipment cost, durable nozzle design reducing replacement frequency;
• Easy operation: simplified control system with one-button pressure and temperature adjustment, simple nozzle replacement tools, no professional personnel required;
• Durable and robust: reinforced stainless steel tower and piping, durable high-pressure pump brand, adapted to continuous production and tropical environments;
• Low energy consumption: optimized hot air system and tower insulation improving thermal efficiency, reducing operating costs, can be paired with diesel hot air furnace;
• Tropical climate adaptation: all-stainless steel construction for corrosion resistance, IP54 electrical protection, adapted to high-temperature high-humidity environments;
• Local material adaptation: optimized nozzle and tower design for popular Southeast Asian and African products (detergents/washing powder, dyes, pigments, ceramic powder, instant beverages, etc.).

Technical Advantages

• Larger product particles (100 to 300 μm), higher bulk density, good flowability and low dust generation, especially suitable for products requiring large particles, instant solubility or low dust;
• Simple nozzle structure, easy maintenance and low replacement cost, suitable for feeds containing abrasive particles;
• Precise control of product particle size and bulk density by adjusting nozzle pressure, orifice diameter and swirl core;
• Suitable for large-scale continuous production with high single-machine throughput;
• Lower power consumption compared to centrifugal spray dryers;
• Capable of producing hollow or porous particle products to improve solubility.

Applications

Widely used in Southeast Asian and African markets for chemical (detergents, washing powder, dyes, pigments, pesticides, fertilizers, catalysts, resins, organic intermediates), food (granulated milk powder, instant coffee, instant beverages, seasonings, maltodextrin), pharmaceutical (API granules, herbal spray-dried granules), ceramic (ceramic powder, metal oxides, refractories) and other (urea, formaldehyde resin, water treatment chemicals) industries.