Boiler — Process Challenge

Prévention de l'entartrage des chaudières : antitartres et dispersants

La dureté résiduelle de l'eau d'alimentation dépose du CaCO3/CaSO4 et de la silice sur les tubes de chaudière, les isolant thermiquement et risquant la surchauffe. La formulation utilise un phosphonate associé à un dispersant polymère et des chélateurs pour séquestrer la dureté sous forme de complexes solubles
Updated Jun 2026
Approche de solution

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Treatment Workflow
1
Water & System Assessment
Characterize the water and the system — hardness, alkalinity, pH, TDS/conductivity, microbial load, and the metallurgy and temperatures of the equipment being protected.
2
Program & Chemistry Selection
Match coagulants, flocculants, scale and corrosion inhibitors, biocides, or pH adjusters to the water profile and discharge limits, factoring compatibility with any existing program.
3
Jar Testing & Dosing
Confirm coagulant and flocculant dose and feed point by jar test, set inhibitor and biocide treat rates, and size packaging (drums, totes, bulk) to consumption.
4
Monitoring & Control
Track residuals, turbidity, ORP, corrosion coupons, and effluent compliance, adjusting chemistry and dose as feedwater and load change.
Recommended Chemistries (5)
Hydroxyethylidene Diphosphonic Acid
CAS 2809-21-4
Esters Phosphoriques et Dérivés
Inhibiteur de tartre CaCO3 primaire
HEDP threshold-inhibits CaCO3/CaSO4 and is thermally stable enough for low/medium-pressure boiler service, keeping hardness from nucleating on tubes
Point de fusion:198-199   Point d'ébullition:578.8   Solubility: 1.15e+01 g/L
Aperçu rapide
Détails complets
Polyacrylic Acid Sodium (PAAS)
CAS 9003-04-7
Polymères et Résines
Conditionnement
Polyacrylate disperses precipitated hardness and iron oxide as a mobile sludge that leaves with blowdown rather than baking onto the tube
Aperçu rapide
Détails complets
Sodium Polyaspartate (PASP)
CAS 55719-33-0
Acides et Sels
Ajustement du pH
Biodegradable polyaspartate inhibits and disperses CaCO3/CaSO4/silica scale; a greener dispersant option. (Spine tags pH Adjustment; chemistry is scale inhibition.)
Aperçu rapide
Détails complets
Ethylenediaminetetraacetic Acid
CAS 60-00-4
Amines et Amides
Chélatant à large spectre
EDTA forms soluble 1:1 chelates with Ca2+/Mg2+/Fe, dissolving residual hardness so it cannot precipitate on heat-transfer surfaces
Point de fusion:237 °C   Densité:0.86 at 20 °C   Solubility: 1000000 mg/L at 25 °C
Aperçu rapide
Détails complets
DTPA (Diethylenetriaminepentaacetic Acid)
CAS 67-43-6
Amines et Amides
High-performance chelant for iron
Higher-denticity chelant holds iron and hardness through higher temperatures than EDTA, backstopping the program at elevated boiler pressure
Physical Description: White to off-white solid   Point d'ébullition:Decomposes   Point de fusion:219-220 ºC
Aperçu rapide
Détails complets

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