CRYOGENIC INSULATION

The unique properties of perlite have found wide acceptance in the insulating of cryogenic low temperature storage tanks (particularly for the storage of LNG), in shipping containers, cold boxes (Air Separation Units), test chambers and in food processing.

Storage chambers –100°c and below are considered cryogenic, and super cold or extremely cold cryogenic fluids such as hydrogen and helium are normally stored in spherical, double walled vessels with evacuated annular spaces using excavated perlite.

Advantages

Typical Non-evacuated Installation

There are many different types of design concepts for low temperature and cryogenic storage vessels. However, most are double wall construction with the annulus filled with expanded perlite.
Packaged or bulk perlite may be used to insulate smaller vessels by pouring or blowing the insulation into place. Portable perlite expansion plants are usually used to insulate storage tanks, cold boxes, ships, and other double wall vessels and pipes. In these applications, perlite ore is expanded on-site and the expanded perlite is conveyed automatically into the annulus.

Some of our more recent contracts are detailed below:

Bagged cryogenic grade perlite ore ready for shipment.