Stop Guessing Your H2S Scavenger Dose.
Quantify Active vs. Spent Triazine on-site in 5 minutes.
Eliminate chemical over-treatment waste and prevent catastrophic reboiler fouling. OndaVia’s Quantitative Raman Spectroscopy (QRS) delivers laboratory-grade triazine and dithiazine analysis at the contactor tower or direct-injection skid—no hazardous titrations, no off-site lab delays.
The Real Cost of Blind H2S Scavenger Management
Managing chemical injection using static rules of thumb or subjective titrations carries steep financial penalties on both sides of the dose curve.
⚠️ The Over-Treatment Penalty
- Wasted Chemical Spend: Over-dosing by 20% to 30% bleeds $50,000 to $200,000+ per facility every year in unspent chemical.
- Downstream Foaming: Unreacted active triazine carries over into amine units and slug catchers, triggering severe foaming events.
- Tramp Amine Overhead Corrosion: Scavenger degradation products hydrolyze into free MEA, causing destructive ammonium salt corrosion in refinery crude distillation overheads.
🛑 The Under-Treatment Penalty
- Solids Fouling & Shut-Ins: Over-spent scavenger supersaturates, precipitating sticky amorphous dithiazine solids that choke reboilers and filters.
- Pipeline Rejection: Sour gas breakthrough exceeds the 4 ppm H2S custody transfer specification, causing emergency pipeline shut-ins.
- Contactor Tower Plugging: Premature calendar bed dumps throw away thousands of gallons of active chemical, while overdue dumps require manual hydro-blasting.
The OndaVia Solution: Dual Chemical Visibility
Measure exactly what enters and exits your contactor or pipeline. Quantify residual active triazine to immediately dial back over-injection, while tracking dithiazine accumulation to schedule bed replacement right before solids begin to form.
Why Traditional Testing Methods Fail in the Field
How OndaVia’s Quantitative Raman Spectroscopy compares directly to wet titrations and off-site testing labs.
| Testing Dimension | Manual Wet Titrations | External Contract Lab (GC/HPLC) | OndaVia Raman (QRS) |
|---|---|---|---|
| Speed to Result | 20–35 minutes per sample | 5–10 business days turnaround | Under 5 minutes on-site |
| Active vs. Spent Specificity | ✕ Cannot separate active triazine from dithiazine | ✓ High selectivity | ✓ Simultaneous active & spent quantification |
| Operator Subjectivity | High (human visual color endpoint) | Low (specialized chemist required) | Zero (Automated digital optical readout) |
| Hazardous Reagents & Waste | Toxic acids, heavy metal indicators, flammable solvents | Large liquid solvent volumes | Pre-packaged, sealed microfluidic cartridge |
| Operational Value | Static spot-checks only | Historical autopsy (damage already done) | Real-time closed-loop dosage optimization |
Proven Field Results in Harsh Operating Conditions
Real-world operational savings documented from operating natural gas processing facilities.
Preventing Condensate Reboiler Solids & Plant Outages
The Problem: A gas gathering facility experienced chronic, severe solids buildup in their condensate processing reboiler, forcing repeated unscheduled equipment shutdowns and expensive manual vessel cleanouts.
The OndaVia Diagnosis: On-site Raman testing revealed that the spent scavenger fluid was operating beyond its critical solubility limit, allowing polymerized dithiazine byproducts to drop out as amorphous solids.
The Outcome: By establishing real-time dithiazine thresholds on an OPAL-103, the plant scheduled change-outs precisely before solids saturation, completely eliminating reboiler fouling and saving an estimated $180,000 in downtime and cleanout costs.
Optimizing 1,000-Gallon Contactor Bed Life
The Problem: An operator was dumping a 1,000-gallon triazine contactor tower every 21 days based purely on a calendar schedule, suspecting poor chemical scavenging performance.
The OndaVia Diagnosis: Testing fresh vs. spent fluid showed the incoming chemical met purity specs, but the tower was routinely dumped with over 35% active triazine remaining in the bed.
The Outcome: Running beds to true chemical depletion safely extended contactor run times from 21 days to 32 days, reducing annual triazine chemical purchases by 34% with zero gas quality breaches.
Choose Your Deployment Architecture
Whether you require field portability or 24/7 continuous SCADA integration, OndaVia has an engineered solution.
OPAL-103 Triazine Analysis System
- Fast & Portable: Weighs under 2 lbs; runs on AC, vehicle 12V, or internal battery pack.
- Pushbutton Operation: Insert sample cartridge, press analyze, and view active/spent concentration in 2 minutes.
- Calibration-Free: Factory pre-calibrated optical consumable cartridges (no toxic liquid standards needed in the field).
- Multi-Analyte: Measures MEA-triazine, MMA-triazine, dithiazine, and free amines.
ORCA-303 In-Line Process Unit
- Autonomous Slipstream Sampling: Automatic line sampling, optical measurement, and microfluidic cleaning cycles.
- SCADA & DCS Integration: Continuous 4–20 mA and Modbus TCP/IP outputs for automated chemical pump trim.
- Hazardous Location Ready: Available with purged Class I, Division 2 / ATEX Zone 2 enclosures.
- Zero Labor Overhead: Eliminates manual grab sampling trips and operator hazard exposure.
Analytical Specifications & Range
High Range: 30% to 80% Active Formulation