Oxygen Scavenger OxyGuard S

This is most common oxygen treatment as a scavengers used to effectively remove dissolved  OXYGEN from your feedwater. By the presence of dissolved oxygen in system, corrosion and pitting caused on metal surface. Removes dissolved oxygen, By acting as an oxygen scavenger.

A fast-acting, catalyzed sodium sulphite (Na₂SO₃) oxygen scavenger for low- and medium-pressure boiler systems. The product reacts stoichiometrically with dissolved oxygen to prevent corrosion in boilers, feed lines, and condensate systems by converting oxygen to inert sulfate.

• 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.

Dosage

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)

• 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).

• 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.

Industrial Usage

Oxygen Scavenger – Sodium Sulphite

Product Description:

Oxygen Scavenger – Sodium Sulphite is a highly effective oxygen scavenging chemical formulated to remove dissolved oxygen from boiler feed water, injection water, and industrial water systems. It rapidly reacts with dissolved oxygen, preventing corrosion in pipelines, boilers, heat exchangers, storage tanks, and water injection systems.

The product is widely used in the oil & gas, power generation, petrochemical, refinery, and water treatment industries to maintain low dissolved oxygen levels and protect critical equipment from oxygen-induced corrosion.

Key Features

• Rapidly removes dissolved oxygen from water.

• Prevents corrosion in boilers and water injection systems.

• Protects pipelines, heat exchangers, and storage tanks.

• Improves equipment reliability and service life.

• Suitable for high-pressure and low-pressure boiler systems.

• Easy to dose and compatible with most water treatment programs.

• Reduces maintenance and operating costs.

Applications

• Boiler Feed Water Treatment

• Water Injection Systems

• RO Permeate Treatment

• Condensate Systems

• Industrial Water Treatment

• Oil & Gas Production Facilities

• Power Plants

• Petrochemical Industries

Typical Specification

Performance Requirement

• Maintains dissolved oxygen (DO) below the specified operating limit.

• Effectively prevents oxygen-induced corrosion.

• Suitable for continuous dosing in industrial water treatment systems.

• Compatible with membrane and boiler water treatment programs (where applicable).

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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.

• 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.

• 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.

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