Cryogenic Perlite
CRYOGENIC INSULATION WITH PERLITE
Perlite is a naturally occurring siliceous volcanic rock containing two to six per cent combined water. When the crude rock is crushed and heated above 1600° F ( 871° C) , the combined water vaporizes and the perlite expands four to twenty times its original volume. This expansion process creates countless cells in the glassy particles, which account for the excellent thermal conductivity of expanded perlite.
Perlite loose fill insulation provides dependable results at temperatures ranging from -452°F to + 2000 ° F (-269 °C to +1093 °C).
It is because of these unique properties that Perlite has found wide acceptance in the insulation of cryogenic and low temperature storage tanks, cold boxes, shipping containers and food processing facilities. In addition to its thermal properties, Perlite is relatively low in cost, easy to handle and non-flammable.
Advantages
- Perlite insulation exhibits low thermal conductivity and has excellent thermal properties.
- Does not shrink, swell, warp or slump.
- Low cost, easy to handle and install.
- Non-combustible, meeting fire regulations and therefore lowers insurance rates.
- Inorganic material that is why it is vermin and rot resistant.
- As a result of its closed cell structure, the material does not retain moisture.
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We have total seven (7) Portable Plants that are capable of working anywhere in the world and also an internal vibration system for big LNG tanks that is successfully developed and very efficient. We can give our clients just about any level of forced settlement they require to pre load the resilient blanket on these tanks.
All of our Portable Plants were designed specifically for site expansion work based on the experience gained through over 40 years of doing this work in the field. These Portable Plants incorporate the most reliable technology that we have been able to develop over these many years of experience.
Advantages of our Portable Plants
- Production Capacity is 750 kg/hour of each Plant.
- We carry full set of spares along with the plants to ensure there is no break down during on-site operation
- Good Control on Density, Quality, less particle break–down, “No-Moisture” as Plant delivers hot expanded perlite to feed into the Tank/Cold box
- All operation and QA/QC in front of your team at site-”Total transparency”.
- Optimum Combustion in the plant- leading to pure white expanded Perlite without any contamination.
- Limited Logistic issues- Crane, Fuel, Ore Handling and less space required for ore storage. Transportation limited to Ore
- Safe Operation. Flame from the Burner is Safely enclosed in Furnace
- Highly expert team in operating the Plant and filling the Tanks/Cold Box.
Amol specializes in Cryogenic applications with proprietary equipment and know-how to inspect, top-up and re-fill cryogenic tanks, ASUs and equipment with premium quality expanded Cryogenic Perlite.
All of our Portable Plants were designed specifically for site expansion work based on the experience gained through over 40 years of doing this work in the field. These Portable Plants incorporate the most reliable technology that we have been able to develop over these many years of experience.
The Process:
Amol carries out a comprehensive step by step process to:
- Ascertain the level of Perlite inside the tank,
- Estimate the approximate volume of Perlite required for topping up of the tank, and
- Preliminary inspection to determine existing Perlite Levels in the tanks including a detailed study of the Tank drawings, review of thermography images, executing level survey and dip measurement test of the existing levels.
Cryogenic Tanks are double walled tanks with the annular space filled with expanded Cryogenic-Grade Perlite as insulation material. Over the years, some tanks experience formation of voids, as the perlite settles, which results in the appearance of cold spots on the surface of the outer tank.
| PARTICULARS | TYPICAL VALUES | |||
|---|---|---|---|---|
| Loose Weight Density - kg/Cu. M | 35 to 50 | |||
| Compact Weight Density – kg/Cu. M | 48 to 66 | |||
| Sieve Analysis: (Particle Size) | ||||
| Sieve Size | % Passing | |||
| Mesh N° | inch | mm | Min. | Max |
| 16 | 0.046 | 1.18 | 90 | 100 |
| 20 | 0.033 | 0.850 | 50 | 100 |
| 30 | 0.024 | 0.600 | 30 | 95 |
| 50 | 0.012 | 0.300 | 10 | 70 |
| 100 | 0.006 | 0.150 | 0 | 30 |
| Moisture Content | 0.5% Max. | |||
| Thermal Conductivity at 20˚±5°C. | 0.044 W/mK°C | |||
We have executed many Perlite Cryogenic Insulation projects in many countries like China, Qatar, Egypt, Kuwait, USA, Canada and India. We have produced approximately 700,000M3 Expanded Perlite On-Site.
- We have successfully completed ‘Live Top-up’ Work On Total 11 LNG Tanks - 4 LNG Tanks In USA & 5 LNG Tanks In Qatar & 2 LNG Tanks In India
- Completed 29 Big LNG Tanks World Wide
- Completed More Than 55 LIN/LOX/LAR/ Ethylene-propylene Tanks
- Completed More Than 70 Cold Boxes/ASU Plants
- Completed Perlite Removal Work From 2 LNG Tanks & Number Of Cold Boxes
- Satisfactory on-site job done for SAIPEM, IHI, MHI, KAEFER GROUP, LINDE, WHESSOE, CB&I, AIR LIQUIDE, BOC, BECHTEL, AIR PRODUCTS, PRAXAIR, ETC...
We have experienced people (‘Perliters’) who operate a fixed Perlite Plant at our factory also operate the Portable Plants since 1990 to execute cryogenic insulation jobs worldwide. The company has a large and highly trained team who can work anywhere in the world. The team is very well equipped and well trained to execute jobs in time, on schedule and within budget.
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