Proppant Dust Control
Solaris’ Silica Dust Collection Technology
Solaris’ Mobile Sand Silo System was designed with silica dust collection in mind. The system has several dust collection elements, most notably built-in dust collection units at the top of each silo that collect any silica dust created in the sand-loading process.
Sand Loading Process
Pneumatic trucks deliver sand into Solaris’ silos via one of four fill tubes along the sides of each silo. Proppant is loaded through a closed loop so that neither sand nor silica dust are emitted. Any dust created in the loading process is collected in 16 pleated cartridges contained in the dust collection units at the top of each silo. An air pulse system is used to clean the pleated cartridges by periodically blowing air, which frees any dust from the cartridges. Our dust collection units significantly reduce silica dust exposure typically seen in the unloading processes in the oilfield today.
Delivery to the Blender
Solaris’ System delivers sand to the blender safely and efficiently. Each silo unloads sand onto an enclosed shuttle belt conveyor, which feeds an enclosed central conveyor, or dual belt. The shuttle belt conveyors are built on a track system that allows the conveyor to move back and forth to ensure accurate delivery to the dual belt. We control all of our conveyors electrically though variable frequency drives (VFDs), which allow for controlled and accurate delivery of sand, which reduces silica dust.
A Proven Frac Sand Dust Solution, 90% Less Wellsite Dust than Conventional SandKing
In 2015, Golder Associates, Inc., an independent full-service energy engineering firm, conducted two separate studies to measure exposure to free-floating silica dust at hydraulic fracturing sites. One study was commissioned by a large U.S. exploration and production company using SandKings on four well sites. We commissioned the other study on two well sites to quantify the effectiveness of our proppant dust control technology.
Golder Associates took samples from five different locations at each of the six total well sites: sand truck offloading area; transfer belt (T-belt) operator area; blender operator area; blender hopper area; and downwind of the truck offloading area. Results indicated that personnel at well sites using a Solaris Mobile Sand Silo System are exposed to silica dust levels 71% below 2016 OSHA Permissible Exposure Limits (PEL). Furthermore, Golder Associates concluded that well sites featuring the Solaris System exhibited ~90% lower dust and quartz exposure levels than locations operating a SandKing, highlighting Solaris’ industry leading proppant dust control technology.