Dry Ice Production

DRY ICE PRODUCTION

DRY ICE PELLETS are manufactured by taking Liquid CO2 and depressurising it in a chamber or tower of a dry ice pelletizer (taking it from 13-25 bar to 1 bar). This will form 50% dry ice snow and 50% gas. The snow is compressed and extruded through extruding plates. Industrial size is 3 mm for dry ice blasting.

No CO2 gas is produced in the manufacture dry ice pellets. The CO2 used comes either from a natural resource such as underground volcano’s or as a bi-product from fertilizer production or from the process of manufacturing Ethanol.

DRY ICE PELLETS
 
DRY ICE PELLETS

Mostly, large industrial gas companies produce dry Ice and there are also a few private manufactures of dry ice.

As dry ice is generally manufactured at centralised facilities and so the cost of shipping can be a significant factor in costs. Distances of more than 300-500 kilometres can have a negative effect on the dry ice resulting in poor quality for blasting. Long transport times or poorly insulated containers can quickly give losses of 10-15 % due to sublimation.

Dry ice manufacturers do not necessarily have dry Ice Pellets available from all their outlets. 3mm Dry Ice pellets used for blasting usually require pre –ordering to make sure that the freshest (and hardest) pellets can be delivered. Please check with your supplier to ensure the best product.

We are happy to work with you and facilitate the supply of pellets at the correct time and most importantly at the correct price.

PRODUCING YOUR OWN DRY ICE PELLETS

INTELBLAST DIP120 & DIP240 DRY ICE PELLETIZERS

The ability to produce high density Dry Ice Pellets in house offers many advantages.

  • Delivery/Production at short notice.
  • Reduction of losses, by manufacturing only what is needed.
  • Fresh pellets for better cleaning or cooling.

The important factors to consider when purchasing a Dry Ice Pelletizer are, Lowest possible capital Investment cost and reliable equipment with easily accessible spare parts.

Our INTELBLAST DIP120 & DIP240 pelletizing machines allow you to easily produce high-quality dry ice on demand, virtually with the flick of a switch. 

These machines are designed to be easily moved with a forklift which facilitates regular, easy cleaning around and under the machine. Large removable panels provide spacious access to all components inside the pelletizing machine and make routine maintenance time and cost effective.

 

Besides a durable 100% stainless steel cabinet, the INTELBLAST DIP120 & DIP240 PELLETIZERS are built using components from Danfoss, Siemens and are combined with high performance hydraulics power units as the key components. All component suppliers have world-wide service centres so in the unlikely event of having to replace or service a component these will be available locally within Australia or New Zealand.

SPECIAL FEATURES

Generally, when manufacturing dry ice the conversion of liquid CO2 to dry ice is about 2.5kg of liquid CO2 to make 1kg of dry ice pellets.

With the INTELBLAST DIP120 or DIP240, the special design of the  Pelletizer Press Chamber, brings this conversion close to 2.2kg.

This of course also requires that the installation of liquid CO2 tank and that supply piping from the tank to the pelletizer is done according to our guidelines

How Does Dry Ice Blasting Clean?

The Dry Ice Pellets are propelled at supersonic speed by compressed air. Upon impact, the Dry Ice creates a “micro-thermal shock” (caused by the extreme cold of the pellet @ -79.5° C), which breaks the bond between the coating and the substrate. The high-pressure air stream removes the dirt from the surface and the Dry Ice pellets vapourise (sublimate) before your eyes.