Polymer Blend Inhibitors for Scale Prevention in Desalination

The patent applies preliminary action by adding polymer inhibitors to the water system before heating and evaporation processes occur. These polymers are预先 introduced to adsorb onto potential deposit-forming surfaces and inhibit crystal growth, preventing mineral deposits from forming even when high temperatures cause supersaturation. This allows the system to operate at optimal temperatures without subsequent cleaning requirements.

The patent uses polymer inhibitors as intermediary substances that mediate between the water system and mineral salts. These polymers contain functional groups that interact with calcium, magnesium, and sulfate ions, forming soluble complexes that prevent precipitation. The polymers act as a buffer layer between the high-temperature evaporation process and the mineral salts, allowing efficient operation without deposits.

The patent applies preliminary action by continuously maintaining the water system in a deposit-free state through polymer inhibition, eliminating the need for periodic cleaning operations. The polymers are dosed continuously or periodically to maintain protective coverage on surfaces, preventing deposits from forming to problematic levels, thus avoiding production interruptions for maintenance.

The patent implements self-service by enabling the water system to protect itself against deposits through the continuous action of polymer inhibitors. The polymers adsorb onto surfaces and actively prevent crystal growth and adhesion, allowing the system to maintain itself without external cleaning interventions. This self-protecting mechanism eliminates the need for scheduled maintenance shutdowns.

The patent applies composite materials by combining multiple polymer types with different chemical structures and functional groups into a synergistic mixture. The blend includes polymers with carboxyl groups for calcium carbonate inhibition, sulfonate groups for calcium sulfate prevention, and amino groups for magnesium salt control. This composite polymer system provides broad-spectrum protection against all major deposit types simultaneously, overcoming the limitations of single-polymer approaches.

The patent achieves universality by designing a polymer mixture where each component targets specific mineral salts while the combination provides comprehensive protection. The polymers contain diverse functional groups (carboxyl, sulfonate, amino, hydroxyl) that can interact with different cations and anions, enabling a single dosing solution to prevent multiple types of deposits across varying water chemistry conditions and temperature ranges.