Scale Inhibitor Dispersant
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Category：Chemical Additives Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Scale Inhibitor Dispersants: Principles and Applications
1. Definition & Function
- Scale Inhibitor Dispersants are chemical additives that prevent mineral scale formation (e.g., CaCO₃, CaSO₄, Mg(OH)₂) and disperse existing deposits in industrial water systems.
- Dual Action:
- Inhibition: Blocks crystal growth via threshold effect.
- Dispersion: Keeps suspended particles from adhering to surfaces.
2. Common Types & Mechanisms
| Type | Examples | Mechanism |
|---|---|---|
| Phosphonates | HEDP, ATMP | Chelate metal ions, distort crystal lattice. |
| Polymeric Dispersants | Polyacrylates, Polymaleic acid | Adsorb onto particles, prevent agglomeration. |
| Phosphate Esters | – | Hydrolyze to release phosphonates under heat. |
| Green Inhibitors | Polyaspartate, PESA | Biodegradable, low toxicity. |
3. Key Applications
- Cooling Water Systems
- Prevents calcium carbonate scaling in heat exchangers.
- Boiler Water Treatment
- Controls silica and phosphate scales in high-pressure boilers.
- Oilfield Operations
- Inhibits barium sulfate (BaSO₄) in produced water.
- RO Membranes & Desalination
- Reduces CaSO₄ fouling in reverse osmosis systems.
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