Boiler Water Treatment Chemicals: A Complete Guide

Scale formation (calcium carbonate, calcium sulphate, silica) reduces heat transfer efficiency and causes tube overheating and failure.

Corrosion (oxygen pitting, acid attack, caustic embrittlement) damages boiler internals and steam condensate return lines.

Carryover of dissolved solids with steam contaminates downstream processes and causes water hammer in steam lines.

Indian boiler feed water often has high hardness and silica requiring comprehensive internal treatment programme.

Oxygen scavenger (sodium sulphite, DEHA, carbohydrazide) to remove dissolved oxygen and prevent pitting corrosion.

Internal treatment (phosphate, polymer-based) for scale prevention — precipitates hardness as mobile sludge rather than adherent scale.

Alkalinity builder (caustic soda, phosphate) to maintain pH 10.5–11.5 in boiler water for corrosion protection.

Condensate line treatment (neutralising amine, filming amine) to prevent CO2 corrosion in steam condensate return system.

Monitor boiler water daily: pH, TDS, phosphate residual, sulphite residual and blowdown rate.

Conduct boiler water analysis monthly and adjust chemical dosing based on feed water quality changes.

Implement blowdown control to maintain boiler water TDS within recommended limits (typically 2500–3500 mg/L for low-pressure boilers).

Source boiler treatment chemicals from suppliers offering integrated programmes, water analysis support and bulk supply from Gujarat.

Drashti Chemicals stocks related industrial chemicals from Vadsar with batch COA, MSDS and GST invoicing (24AGLPC6288M1ZX). We are a supplier/stockist — share grade and quantity for a documented bulk quote. No public list prices.