Furnace Tube Decoking Process
The SANDJET™ Service
The Complete System for Decoking
Mobile equipment operated by Linde Services Inc. is brought to the site. Typically, three types of trucks are involved at the process inlet. The first carries a nitrogen pumping unit and supply of liquid nitrogen, a second carries the cleaning material hopper with a supply of cleaning material, and a third carries additional liquid nitrogen.
Service Benefits
Linde's in-place economical pipeline cleaning method that cleans to a white-metal blasted finish while drying and inerting sections up to 10 miles long. The SANDJET service uses dry, inert nitrogen gas to propel cleaning particles through the line at high velocity to quickly remove corrosion, scale and heavy deposits. The service is also effective for removing contaminants prior to abandonment. The best part: the entire service takes only a few hours.
The service for furnace tube maintenance provides these benefits:
- No water is required during the SANDJET service and no liquid waste is generated
- Alleviates metallurgical concerns from water pretreatment
- Tubes are not exposed to extreme high temperatures as often seen with steam air decoking
- Steel shot cleaning material does not damage tube walls