Cooling — Process Challenge

Kühlturm-Skalierungskontrolle: Antiscalants und Inhibitoren

Umlaufendes Kühlwasser konzentriert CaCO₃, CaSO₄ und Kieselsäure beim Hochzyklieren; ohne Inhibition scheiden diese sich auf Wärmetauscherrohren und Fülleinbauten ab. Die Auslegung sieht substöchiometrische (Schwellenwert-)Phosphonate als Antiscalants plus ein Polymer-Dispergiermittel vor
Updated Jun 2026
Lösungsansatz

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 (6)
Hydroxyethylidene Diphosphonic Acid
CAS 2809-21-4
Phosphorsäureester & Derivate
Primärer Ablagerungsinhibitor für CaCO3
HEDP adsorbs onto nascent CaCO3 nuclei at sub-stoichiometric (threshold) dose, distorting crystal growth so scale stays dispersed; the workhorse cooling-tower antiscalant
Schmelzpunkt:198-199   Siedepunkt:578.8   Solubility: 1.15e+01 g/L
Schnellansicht
Alle Details
Amino Trimethylene Phosphonic Acid
CAS 6419-19-8
Phosphorsäureester & Derivate
Multi-functional phosphonate
ATMP gives strong CaCO3 threshold inhibition and chelates the trace Fe/Cu that catalyze scale and corrosion; broad pH tolerance for towers
Schmelzpunkt:210 - 215 °C   Solubility: 1000 mg/mL at 25 °C   Vapor Pressure: 0.0000001
Schnellansicht
Alle Details
DTPMPA (Diethylenetriamine Penta(methylenephosphonic acid))
CAS 15827-60-8
Phosphorsäureester & Derivate
High-temperature phosphonate
High charge density and superior high-temperature stability make DTPMPA effective at the elevated skin temperatures and high cycles where HEDP/ATMP weaken
Physical Description: Solid; 49-51% Aqueous solution: Clear amber to …
Schnellansicht
Alle Details
Phosphonobutane Tricarboxylic Acid
CAS 37971-36-1
Phosphorsäureester & Derivate
Chelatisierung / Sequestrierung
PBTC tolerates free chlorine and high calcium far better than aminophosphonates, so it survives oxidizing-biocide programs without losing inhibition
Schnellansicht
Alle Details
Polyacrylic Acid Sodium (PAAS)
CAS 9003-04-7
Polymere & Harze
Konditionierung
Low-MW polyacrylate disperses precipitated CaCO3 and silt and prevents phosphonate-calcium (Ca-phosphonate) deposits, completing the phosphonate/polymer program
Schnellansicht
Alle Details
HPAA (2-Hydroxyphosphonoacetic Acid)
CAS 23783-26-8
Phosphorsäureester & Derivate
Chelatisierung / Sequestrierung
HPAA combines scale-threshold action with mild ferrous-corrosion inhibition and good chlorine stability, useful in high-hardness, oxidizer-dosed towers
Physical Description: Brown liquid. Slight acrid odor
Schnellansicht
Alle Details

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