RO antiscalant for refinery process-water trains
Programme outline, dosing range, feed points, target parameters, and lead times for the AAS ro antiscalant for refinery process water into the refineries segment in Pakistan. Sole Pakistan agent for Shaanxi Ande Technology (China) and Innovative Water Technology (Pakistan). Karachi office, same-business-day technical response.
Same-day Karachi visit · CoA per drum · Engineering autopsy on request
UN-307 is on programme at a refining-sector RO train in Mahmood Kot — 6-month autopsy retest confirmed scale-free membranes after a year on dose.
Dosing programme outline
Programme outline below is the AAS default for refineries applications. Final dose is set against the customer's source-water analysis, equipment metallurgy, and operating cycles. Every drum ships with a Certificate of Analysis; SDS is shipped pre-shipment for HSE-document review.
- Active chemistry
- Phosphonate-blend (HEDP / PBTC) + polymeric dispersant
- Feed point
- Before cartridge filter, after SMBS injection
- Typical dose
- 2–5 ppm on feed
- Target LSI (concentrate side)
- ≤ +2.5
- CaSO₄ saturation tolerance
- ≤ 230% of Ksp
- SiO₂ saturation tolerance
- ≤ 100 ppm reactive at concentrate side
- BaSO₄ saturation tolerance
- ≤ 70× Ksp
- Membrane compatibility
- Polyamide TFC (Dow, Hydranautics, Toray)
- Lead time
- Ex-Karachi stock
Why refinery RO trains fail without correct antiscalant
Refinery process-water RO trains carry a heavier scaling load than a typical IPP feedwater RO: groundwater blends frequently push silica into the 25–40 ppm reactive range, CaSO₄ saturation runs high in Sindh-derived makeup, and barium turns up sporadically from upstream additive injection. Generic phosphonate antiscalants designed for power-utility brackish water under-perform on silica and barium specifically. UN-307 is formulated around a phosphonate blend with a polymeric dispersant component that holds silica supersaturation at the concentrate side — the failure mode on PARCO / Byco-style refinery RO feeds.
Read deeper into the programme.
Request a technical proposal for ro antiscalant for refinery process water.
Send the unit you're trying to protect (site, loop or train, symptom or KPI, volume, deadline) plus a source-water analysis if you have one. Same-business-day Karachi reply with a programme outline, dose range, and the relevant CoAs / SDS attached.
Karachi office · Sole Pakistan agent · Shaanxi Ande & Innovative Water