Migreat spray dryer01 / 05

Drying · LPG series

Spray Dryer

A high speed centrifugal spray dryer. This spray drying machine dries liquid into powder or granule in a few seconds.

Evaporation
5 to 2,000 kg/h
Inlet air
140 to 350 °C
Outlet air
80 to 90 °C
Heat source
Electricity, steam, oil, gas or hot air furnace

Overview

Liquid in, powder out

Spray drying turns solutions, emulsions, suspensions and pumpable paste into powder, granule or lumps. It is the right process when particle size, residual moisture, bulk density and particle shape must meet a tight standard.

A high speed centrifugal atomizer at the top of the tower breaks the liquid into very fine droplets. Hot air dries them in seconds.

  1. Heat

    Air is filtered and heated, then enters the air distributor at the top and flows into the chamber in a spiral.

  2. Atomize

    The rotating atomizer sprays the liquid into fine mist, which dries in parallel contact with the hot air.

  3. Collect

    Product leaves continuously from the bottom of the tower and the cyclone. A fan exhausts the air.

LPG spray dryer drawing
Drawing of the LPG spray dryer

The range in numbers

  • 5 to 2,000kg/h

    Water evaporation range

  • 95 to 98%Water

    Evaporated at once in the hot air

  • 40 to 60%Moisture

    Of the liquid feed, up to 90% for special material

  • SecondsDrying time

    Suited to heat sensitive material

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Features

Fast, gentle on heat sensitive material

The dried product needs no crushing or screening.

  1. Very fast drying

    The surface area grows greatly after atomization, and 95 to 98 percent of the water evaporates at once. Drying takes only a few seconds.

  2. Heat sensitive material

    The short drying time suits material that cannot take long heat.

  3. Good powder quality

    The product has good uniformity, flow and solubility, with high purity.

  4. Fewer steps

    Liquid with 40 to 60 percent moisture dries straight to powder with no crushing or screening.

  5. Adjustable particle

    Particle size, bulk density and moisture can be adjusted by changing operating conditions.

  6. Simple control

    The process is simple and easy to control.

Build it your way

  • Size

    Water evaporation from 5 to 2,000 kg/h.

  • Heat source

    Electricity, steam, oil, gas or a hot air furnace.

  • Atomizer drive

    Compressed air on the smallest model, mechanical on the others.

  • Inlet temperature

    Self controlled from 140 to 350 °C.

Have a question about this machine?

Send your material and batch size. We reply with a suitable model.

Specifications

Choose by evaporation rate

Inlet temperature is self controlled at 140 to 350 °C and outlet temperature is 80 to 90 °C on all models.

Model Evaporation (kg/h) Spray head drive Max speed (r/min) Spray disk (mm) Heat source Max electric heating (kW) Size L x W x H (m)
LPG-5 5 Compressed air 25000 50 Electricity 9 1.8 x 0.93 x 2.2
LPG-25 25 Mechanical 18000 120 Steam + electricity 36 3 x 2.7 x 4.26
LPG-50 50 Mechanical 18000 120 Steam + electricity 72 3.5 x 3.5 x 4.8
LPG-150 150 Mechanical 15000 150 Steam + electricity, oil, gas or hot air furnace 99 5.5 x 4 x 7
LPG-200 to 2000 200-2000 Mechanical 8000-15000 180-240 Steam + electricity, oil, gas or hot air furnace - Set by actual layout

Showing 5 of 5 models

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Send your material and batch size. We reply with a suitable model.

Applications

Where it works

It forms powder, granule or solid product from liquid raw material.

Materials it handles

Feed

  • Solution
  • Emulsion
  • Suspension
  • Pumpable paste

Product

  • Powder
  • Granule or lumps

Moisture in feed

  • 40 to 60 percent
  • Up to 90 percent for special material

Have a question about this machine?

Send your material and batch size. We reply with a suitable model.

Questions

Before you order

What is a spray dryer used for?

It turns solutions, emulsions, suspensions and pumpable paste into powder, granule or lumps. The LPG is the right process when particle size, residual moisture, bulk density and particle shape must meet a tight standard.

What is the principle of a spray dryer?

A high speed centrifugal atomizer at the top of the tower breaks the liquid into very fine droplets. Hot air flows into the chamber in a spiral, and the droplets dry in parallel contact with it in seconds. The product leaves from the bottom of the tower and the cyclone.

What is the purpose of a spray dryer?

To dry liquid straight into powder in one step. Liquid with 40 to 60 percent moisture dries to powder, and the product needs no crushing or screening. Capacity runs from 5 to 2,000 kg/h.

Have a question about this machine?

Send your material and batch size. We reply with a suitable model.

Inquiry

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