Boiler — Process Challenge

Prevención de incrustación en calderas: antiincrustantes y dispersantes

La dureza residual del agua de alimentación deposita CaCO3/CaSO4 y sílice sobre los tubos de caldera, aislándolos y arriesgando sobrecalentamiento. El diseño usa un fosfonato más un dispersante polimérico y quelantes para secuestrar la dureza como complejos solubles
Updated Jun 2026
Enfoque de solución

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
Ésteres de Fosfato y Derivados
Inhibidor primario de incrustación de CaCO3
HEDP threshold-inhibits CaCO3/CaSO4 and is thermally stable enough for low/medium-pressure boiler service, keeping hardness from nucleating on tubes
Punto de fusión:198-199   Punto de ebullición:578.8   Solubility: 1.15e+01 g/L
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Polyacrylic Acid Sodium (PAAS)
CAS 9003-04-7
Polímeros y Resinas
Acondicionamiento
Polyacrylate disperses precipitated hardness and iron oxide as a mobile sludge that leaves with blowdown rather than baking onto the tube
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Sodium Polyaspartate (PASP)
CAS 55719-33-0
Ácidos y Sales
Ajuste de pH
Biodegradable polyaspartate inhibits and disperses CaCO3/CaSO4/silica scale; a greener dispersant option. (Spine tags pH Adjustment; chemistry is scale inhibition.)
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Ethylenediaminetetraacetic Acid
CAS 60-00-4
Aminas y Amidas
Quelante de amplio espectro
EDTA forms soluble 1:1 chelates with Ca2+/Mg2+/Fe, dissolving residual hardness so it cannot precipitate on heat-transfer surfaces
Punto de fusión:237 °C   Densidad:0.86 at 20 °C   Solubility: 1000000 mg/L at 25 °C
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DTPA (Diethylenetriaminepentaacetic Acid)
CAS 67-43-6
Aminas y Amidas
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   Punto de ebullición:Decomposes   Punto de fusión:219-220 ºC
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