Aromatics Extraction Solvents
Recovery of sulfolane, NMP and DMF from aromatics extraction units for on-spec reuse.
Industries:
Aromatics
Solvent Recovery
Extraction Units
99.5%+
Purity
1–10 t/h
Capacity
≥98%
Recovery
Petrochemical Distillation Challenges You’re Facing
Petrochemical plants face dual pressures of rising energy costs and strict environmental mandates. Traditional tall towers are hitting their efficiency limits.
Aromatics Purity & Color
BTX and C9 aromatics must meet tight specs on non-aromatics, color and dryness.
Impact: Off-spec product leads to blending losses, discounts and reduced reformate value.
Energy-Intensive Extraction Solvents
Regenerating extraction solvents like sulfolane, NMP and DMF requires very high reboiler duties.
Impact: Extraction solvent recovery becomes a major OPEX driver for the aromatics unit.
Solvent Degradation & Corrosion
Sulfolane, amine and other process solvents degrade under high temperature and long residence times.
Impact: Acid formation, color change and corrosion increase maintenance and solvent make-up cost.
Tall Vacuum Towers & Heavy Ends
Vacuum columns for heavy aromatics and lube side streams are tall, steam-hungry and hard to debottleneck.
Impact: Limited capacity and high energy use restrict throughput and margin.
Fouling, Polymers & Solids
Side streams containing polymers, coke, salts or oligomers quickly foul trays and packing.
Impact: Frequent shutdowns for cleaning, unstable operation and lost on-stream time.
Spent Solvents & High-COD Waste
Spent glycols, amines and solvent-rich wastewater are expensive to treat or dispose.
Impact: Valuable organics are wasted and disposal costs rise year by year.
The Cost of Inefficient Processing
Huge Carbon Footprint
Massive columns dominate plant energy consumption.
Zero Expansion Space
Tower height limits retrofits and capacity upgrades.
Frequent Fouling
Heavy tars clog trays, forcing costly shutdowns.
The VHPS Advantage: Hypergravity + Heat Pump
A revolutionary "Five-in-One" synergy of High Gravity (HiGee), Energy Looping, and Intelligent Control.
Hypergravity Separation
Generates a centrifugal force field 100s of times stronger than gravity, creating micro-droplets and ultra-thin liquid films.
Increases mass transfer rate by 1-3 orders of magnitude.
Optimized Heat Pump Integration
Upgrades latent heat from overhead vapor to drive the reboiler, recycling thermal energy within the system.
Reduces energy consumption by 40-60% compared to conventional columns
Compact & Anti-Clogging Design
Wide flow channels combined with high shear force prevent fouling from tars and solids.
Reduces equipment volume by up to 90% (1/10th size of towers).
Technical Specifications
Capacity Range
1 – 10 t/h
Product purity
up to ≥99.5–99.9%
Solvent recovery rate
≥98–99%
Temperature Range
typically 40–200°C
Operating Pressure
typically 5–300 mbar
Typical services
aromatics solvent recovery, BTX/C9 cuts, lube/dewaxing loops and solvent-rich wastewater
Typical feeds
extraction solvents, wash oils, lube streams, viscous residues and solvent-rich wastewater
Performance Comparison
Specialized Proven Petrochemical Applications
From light ends recovery to heavy residue treatment, VHPS delivers efficiency where it matters most.
BTX & C9 Aromatics Polishing
Sharpening BTX and C9+ aromatics cuts to meet color, non-aromatics and dryness specifications.
Industries:
BTX
Aromatics
Product Quality
99.9%+
Purity
ppm-Level
Impurities
Stable
Color
Lube & Dewaxing Solvents
Recovery of MEK, toluene, MIBK and other dewaxing and extraction solvents from lube-oil units.
Industries:
Lube Oil
Dewaxing
Solvent Loops
≥99.5%
Solvent Purity
1–8 t/h
Capacity
30–50%
Energy Savings
Wash Oils & Heavy Aromatics
Concentration and recovery of heavy aromatics, wash oils and tar-like side streams from reformer and pyrolysis units.
Industries:
Heavy Aromatics
Side Streams
Energy Recovery
≥90–95%
Solvent Recovery
High-Viscosity
Handling
Reduced
Residue Volume
Glycols & Amine Regeneration
Regeneration of MEG/TEG, MDEA and other gas-treating solvents from spent streams to reduce make-up demand.
Industries:
Gas Treating
Glycols
Amines
≥99.0%
Solvent Purity
20–40%
OPEX Reduction
Lower
Make-Up Rate
Wastewater & Off-Spec Streams
Concentrating solvent-rich wastewater and off-spec tanks to recover organics before disposal or reblending.
Industries:
Off-Spec
Wastewater
Utilities
30–50%
COD Reduction
1-5t/h
Capacity
Lower
Disposal Cost
Typical Petrochemical Solvents & Streams
Key petrochemical solvents and side streams treatable by VHPS.
Solvent / Stream | Typical Source in New Energy / Renewable Fuels | Key Issues / Pollutants | VHPS Treatment Goal | Example Performance |
Bioethanol / biobutanol | Bioethanol plants, biobutanol production | Water removal to fuel/chemical grade, energy-intensive distillation | Dehydrate and polish alcohols to target grade with lower energy use | Purity ≥ 99.5%; water in low ppm; energy use ↓ 30–50% |
Methanol in biodiesel / renewable diesel | Transesterification and esterification (biodiesel, HVO/renewable diesel) | High methanol loss, high COD, safety and emission concerns | Recover methanol for internal reuse, cut COD and fuel loss | Methanol recovery ≥ 95–99%; COD reduction 30–50% |
Hexane & extraction solvents | Oil extraction, renewable diesel / HEFA feed preparation | VOC emissions, solvent loss, flammability | Recover hexane/solvent, close loops and reduce VOC / fresh-solvent consumption | Solvent recovery ≥ 95–99%; VOC load reduced |
DMC, glycols & carbonate solvents | E-fuels, power-to-X, specialty new energy solvents | Moisture control, degradation, narrow spec window | Purify and dehydrate carbonate/glycol solvents to meet process specs | Purity ≥ 99.5%; low water; stable performance |
CO₂ capture amine / advanced solvents (NE use) | New energy/CCUS integration with CO₂ capture units | Degradation, heat-stable salts, corrosion | Regenerate and reclaim solvents, extend solvent life and reduce waste | Fresh solvent make-up ↓ 30–60%; waste volume ↓ 50–80% |
High-COD / high-salt biofuel wastewater | Bioethanol, biodiesel, renewable diesel and renewable chemicals | High COD, high salt, large volumes | Concentrate high-COD/high-salt effluents before WWTP or ZLD | Volume reduction 50–80%; COD reduction 30–50% |
SAF / HEFA side streams & heavy cuts | SAF / HEFA units, renewable jet fuel side streams | Heavy aromatics, color, off-spec side fractions | Recover reusable solvent/fuel fraction and concentrate heavy residues | Recovered product on spec; side-stream volume ↓ |
E-fuel / power-to-X solvent loops | E-methanol, e-fuels, power-to-X synthesis and upgrading | Solvent loss, energy use, off-spec cuts | Recover and recycle solvents, improve cut quality and reduce OPEX | Solvent recovery ≥ 95–99%; energy use ↓ 30–50% |
System Configuration & Compliance
Engineered systems designed for methanol handling with full EU compliance and safety standards.
VHPS-HGD-1000
0.5-1.0 t/h
Methanol capacity
Footprint:
8-12 m²
Height:
6.5 m
Power:
45-65 kW
Typical Applications:
Lab scale
Pilot production
Small batch
VHPS-HGD-2500
1.5-2.5 t/h
Methanol capacity
Footprint:
12-16 m²
Height:
7.2 m
Power:
85-120 kW
Typical Applications:
Medium production
API synthesis
Fine chemicals
VHPS-HGD-5000
3.0-5.0 t/h
Methanol capacity
Footprint:
16-22 m²
Height:
8.0 m
Power:
150-220 kW
Typical Applications:
Large scale
Biodiesel
Continuous operation
Installation & Commissioning
Engineering
Detailed engineering package with P&IDs, equipment specifications, and installation drawings.
Delivery
Skid-mounted delivery with pre-assembled components and factory testing completed.
Installation
On-site installation supervision with utility connections and safety system verification.
Commissioning
Performance testing, operator training, and performance guarantee validation.
In Our Partners' Words
Discover why industry leaders trust us to solve their most complex separation challenges.
Applications
FAQs
Yes. VHPS hypergravity heat-pump distillation is designed for sulfolane, NMP, DMF and other aromatics extraction solvents, providing high-purity regeneration and ≥98–99% recovery. This reduces solvent make-up and improves overall aromatics unit economics.
In typical aromatics solvent recovery, BTX/C9 fractionation and lube/dewaxing loops, VHPS cuts energy use by about 30–50% versus conventional towers. This turns solvent recovery and side-stream concentration from a cost center into a real OPEX saver.
Yes. VHPS can treat heavy aromatic side streams, wash oils and polymerizing or high-viscosity residues using wide, high-turbulence flow paths. This mitigates fouling, reduces unplanned shutdowns and enables higher recovery of valuable organics.
VHPS is typically installed as a compact side-stream retrofit skid connected to existing distillation columns, solvent loops or solvent-rich wastewater lines. It adds capacity, improves recovery and lowers energy consumption without building new tall towers—ideal for brownfield petrochemical and refinery sites.
