Gassing Systems

Gassing Systems

Powder Process-Solutions is a leader in the design of nitrogen gassing systems for the packing of whole milk powders and other products to extend the shelf life and prevent spoilage due to oxidation.

Typical gassing systems are used with filling machines for bulk bags, bulk bins, 25kg bags, and consumer can filling line powder processing systems. Systems include complete control systems for powder conveying, evacuation, gas refilling/flushing and product discharge. Continuous on-line monitoring via oxygen analyzers is standard, and accessories such as sifters, metal detectors, and weighing facilities may be included.

Products that can benefit from nitrogen gassing include:
  • Whole milk powder
  • Baby formula
  • Nutritional powders
  • Other powder & granular products

Powder Process-Solutions offers versatile gassing systems, whether a pre-gassing or post-gassing system will be the most suitable technology for your system, PPS will design the system to increase the integrity of your product.

Many systems have been completed to evacuate oxygen and replace with inert gases or gas mixtures with less than 1% residual oxygen.

Combined Vacuum Conveying and Pre-Gassing Systems

These systems use a vacuum conveying system and vacuum pump to convey powder from one or more storage hoppers, fully evacuate the oxygen, and then backflush with gas or inert gas. This eliminates the need for a separate convey system providing a significant saving on capital cost.

Vacuum Pre-Gassing and Gas Flushing Systems

Depending on process requirements, gassing systems may be designed to operate on a batch process of vacuum/evacuation followed by inert gas injection, or on a continuous basis with gas flushing of a powder vessel, creating a laminar flow and stratified oxygen reduction. Continuous on-line sampling provides residual oxygen measurement in real time and feedback control ensures performance to tight specifications.

Post-Gassing Systems

Systems are also available for the post-gassing of some products after packing into cans and bulk bags or bins. These systems have very low gas consumption, and require specialized technology.

Powder Process-Solutions offers versatile gassing systems. Whether a pre-gassing or post-gassing system will be the most suitable technology for your system, PPS will design the system to increase the integrity of your product.
Gassing system solutions can be included in bulk bag filling and consumer can filling line powder processing systems.

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