Hydrocarbon Off-Gas Solvent Separator
Recovering $1,920 per batch in lost solvent. Closed-loop system returns butane directly to inventory. No emissions. No compliance exposure.
Every batch of hydrocarbon extraction leaves behind a solvent problem that the industry has been managing instead of solving. When spent biomass comes out of your extractor it is saturated with residual butane or propane trapped deep in the plant fiber matrix. That solvent does not release at atmospheric pressure on its own.
The math is straightforward. At 800 pounds of biomass per batch with 30 percent solvent retention, you have 240 pounds of butane sitting in your spent material at the end of every run. At $8.00 a pound that is $1,920 walking out the door with every batch. Two batches a day is nearly $4,000 in daily solvent loss. Over a full year that is more than $1.4 million in unrecovered solvent value.
That is not a rounding error. That is a capital equipment budget.
The HOSS is a pressurized, heated, agitated vessel engineered specifically for hydrocarbon solvent recovery from spent botanical biomass. The entire process runs in a closed loop. No solvent reaches the atmosphere. No compliance exposure. No wasted product.
Loaded biomass is sealed inside the vessel under pressure with a heated jacket raising temperature until residual butane vaporizes.
Paddle screw assembly agitates biomass, pulling material against heated jacket wall to maximize heat transfer and solvent release.
Butane vapor exits through condenser, cools back to liquid, and drops into recovery tank ready to go back into solvent inventory.
Fully automated PLC-controlled batch cycle with HMI touchscreen, complete instrumentation, and safety shutdown system.
Desolventizing has been standard practice in chemical processing and food manufacturing for decades. Now optimized for hemp extraction.
Every pound of solvent tracked, recovered, and returned. Straightforward documentation. Predictable inventory. Demonstrably safer facility.
The HOSS operates in a fully automated closed-loop cycle from load to discharge.
Spent biomass is loaded through the 10-inch manway. The dome is bolted down and vessel is purged with nitrogen to displace air before pressurization.
Recirculating hot water jacket raises vessel temperature to butane boiling point. Paddle screw rotates, cycling material from center outward to heated wall and back.
Butane vapor enters shell and tube condenser. Cold glycol condenses vapor back to liquid. Liquid drops into jacketed recovery tank, ready to pump back to solvent supply.
Once depressurized, paddle screw reverses direction. Screw flights drive dry biomass downward through cone and out discharge port into collection bin.
36-inch inside diameter vessel, 76 inches overall height, 316L stainless steel throughout, 250 PSI ASME Section VIII Division 1 rated with U-stamp and National Board registration. Double mechanical seal with pressurized wet barrier system. 5 HP explosion-proof C1D1 Group D motor with VFD control. 22 kW recirculating hot water system. Shell and tube condenser with dedicated low temperature glycol chiller. Fully automated PLC-controlled batch cycle with HMI touchscreen and complete instrumentation.
If you are running a hydrocarbon extraction operation and want to understand what closed-loop solvent recovery looks like for your specific throughput and facility, reach out directly.
Every operation is different. Batch size, solvent type, throughput rate, facility layout, and regulatory environment all affect the right system configuration.
The conversation starts with your numbers.
Matthew Ellis | BOEXCO | 720.412.5194 | matthew@boexco.com