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GDM Impeller Radial Flow Gas Dispersing

The GDM is a high-efficiency radial flow gas dispersing impeller. Thanks to its advanced gas dispersing blade design, it is compatible with both perforated and non-perforated sparger systems. It operates at constant speed without power loss even at high gas flow rates, delivering optimized mass transfer.

Ø200–2000mm
Diameter Range
0.5–2 VVM
Gas Capacity
High
Mass Transfer
GDM Gas Dispersing Impeller
OVERVIEW

GDM Impeller — High-Efficiency Gas Dispersion

The GDM is a radial flow gas dispersing impeller manufactured by Mechanimix. Operating within a diameter range of 200–2000 mm and a gas feed capacity of 0.5–2 VVM, it delivers consistent performance even at high gas flow rates thanks to its clog-free gas separator ring design. It is the preferred choice for gas-liquid mass transfer processes in the chemical, pharmaceutical, biotechnology and hydrometallurgy industries.

Radial Flow

High-efficiency radial flow impeller design effectively breaks up gas bubbles to create small and uniform bubble distribution.

Advanced Gas Dispersing Blade

The specially profiled gas dispersing blade geometry maximizes the gas-liquid contact surface area, increasing the mass transfer coefficient.

Sparger Compatibility

Fully compatible with both perforated and non-perforated sparger systems, easily adapting to different process configurations.

No Power Loss Under Gassing

Operates at constant speed without power loss even at high gas flow rates, delivering continuous and predictable performance.

High Gas Suspension

Simultaneously suspends solid and gas phases at high gas flow rates, optimizing reaction efficiency.

Gas Separator Ring

The clog-free gas separator ring design achieves high volume limits even under bubble-free conditions.

GDM Impeller Detail
VIDEO

GDM Impeller — Introduction Video

Discover the maximum mass transfer performance of the GDM impeller in gas-liquid reaction systems.

APPLICATION AREAS

Application Areas

Fermentation

Maximizes microorganism yield by providing high oxygen transfer in aerobic fermentation processes.

Hydrogenation

Optimizes gas dispersion in high-pressure hydrogenation reactors, increasing reaction conversion rates.

Oxidation

Creates controlled and safe reaction conditions through uniform gas distribution in chemical oxidation reactors.

Alkoxylation

Delivers safe gas feeding and dispersion performance in ethylene oxide and propylene oxide reactions.

Hydrometallurgy

Provides effective mass transfer in gas-liquid-solid three-phase systems during pressure leaching and oxidative leaching processes.

Food & Beverage

Offers high-efficiency gas dispersion with hygienic design in food-grade fermentation and carbonation processes.

TECHNICAL SPECIFICATIONS

Technical Data

Feature GDM Impeller
Diameter Range200 – 2000 mm
Blade Count6
MaterialAISI 316L / Hastelloy / Titanium
Gas Capacity0.5 – 2 VVM
Flow TypeRadial
Speed Range50 – 500 rpm
Sparger CompatibilityPerforated and non-perforated sparger
Gas FloodingHigh resistance, no power loss
Power Number (Np)Medium – high
D/T Ratio0.3 – 0.45

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