RIGS Oil Field
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25L, 210L, IBC
RIGS Oil Field
Oxygen Scavenger OxyGuard S
Part No. RXSOL-34-6119-250
Used as Oxygen Scavanger for Drilling Rigs
Powerful concentrated corrosion inhibitor acts as oxygen scavengers used to effectively remove dissolved OXYGEN
Key Technical Details
| Part number | RXSOL-34-6119-250 |
|---|---|
| Generic name | Used as Oxygen Scavanger for Drilling Rigs |
| Active matter (%) | 65-72 |
| Standard packing | 250.00 |
| Available pack sizes | SCAVENGER OXYGEN, OXYGEN SCAVENGER, WATER-BASED DISSOLVED OXYGEN SCAVENGER LIQUID, WATER SOLUBLE SCAVENGER available in 250 Kg Liquid Drum. |
| Supply locations | Oxygen Scavenger supplier and exporter from Mumbai, Chennai, Kolkata, Visakhapatanm, Gandhidham, Fujairah, Sharjah, Dubai, Abudhabi, Gulf Middle East, Muscat Barka Sohar Oman, Nairobi Kenya Africa, Canada |
Application
Key Areas of Application of Oxygen Scavenger OxyGuard-S
- Oxygen removal in low/medium-pressure boilers (typically up to ~65 bar; usage above this pressure is uncommon due to potential sulfate/solids carryover).
- Hot standby protection to prevent pitting during idle periods i.e. Oilfield Application.
- Feedwater & deaerator outlets where residual O₂ must be suppressed rapidly.
Using Procedure
Reaction (overall):
Na₂SO₃ + ½ O₂ → Na₂SO₄
Catalyst accelerates the reaction at lower temperatures and shorter residence times (e.g., in deaerator outlets and feedwater lines)
Power of Oxygen Scavenger OxyGuard-S: powerful stoichiometry: ~7.88 mg/L Na₂SO₃ per 1 mg/L dissolved O₂.
With safety factor (process variability, kinetics), dose 10–12 mg/L Na₂SO₃ per 1 mg/L O₂.
Typical operating targets (LP/MP boilers):
- Deaerator outlet O₂: ≤ 7–10 ppb (if DA present)
- Sulfite residual in boiler water:
- Normal operation: 20–40 mg/L as Na₂SO₃
- High risk / wet lay-up: 60–100 mg/L as Na₂SO₃
- pH (feedwater/boiler): follow your internal treatment program (commonly FW pH 8.5–9.2; boiler water pH 10.5–11.5 depending on pressure).
Where to feed:
- Preferably deaerator storage section or feedwater line upstream of economizer to ensure complete O₂ removal before the boiler.
Example Dose Calculation
Feedwater DO = 0.10 mg/L (100 ppb) at 20 m³/h.
Stoichiometric Na₂SO₃ = 0.10 × 7.88 = 0.788 mg/L.
With 1.3× safety factor → ~1.0 mg/L Na₂SO₃.
At 20 m³/h → 20 g/h Na₂SO₃ (as pure).
Using 38% liquid: 20 / 0.38 ≈ 52.6 g/h (~40 mL/h) (SG 1.32 ⇒ ~30 mL/h by mass; verify on site).
Fine-tune to maintain target sulfite residual in boiler.
Technical Specifications
| Property | Specification |
|---|---|
| Appearance | Clear to pale straw liquid |
| Specific gravity @ 25 °C | ~1.30 – 1.34 (depends on strength) |
| pH (neat) | 8.5 – 10.5 (stabilized alkaline) |
| Odor | Faint sulfurous |
| Freeze point | 0 °C (varies with strength) |
| Solubility | Completely miscible with water |
Remarks
Control test methods:
- Residual sulfite by iodometric titration (express as mg/L Na₂SO₃).
- Dissolved oxygen by luminescent/optical or membrane DO analyzer at DA outlet.
Use Guidelines
- Start with calculated stoichiometric dose + safety factor based on measured DO.
- Adjust pump to maintain target sulfite residual in the boiler drum.
- Increase dose for intermittent operation, cold feeds, or high leakage air into DA.
- For wet lay-up, raise sulfite residual to upper range and circulate periodically.
Compatibility
- Compatible with phosphates, chelants (as per program limits), and dispersant polymers used for scale/sludge control.
- Avoid co-feeding with oxidizing biocides (e.g., chlorine) as they will consume sulfite.
- Downstream of RO systems, sodium bisulfite is typically preferred for dechlorination; this product is not intended as an RO dechlorinator.
Note
Benefits of using Oxygen Scavenger OxyGuard-S
- Rapid kinetics with catalyst—effective even at moderate temperatures.
- Reliable corrosion protection of pre-boiler & boiler circuits.
- Cost-effective vs. volatile scavengers for LP/MP systems.
- Easy control by simple sulfite residual testing.
- Compatible with most phosphate/polymer internal treatments.
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