POLYMER DISPERSANTS AND METHODS FOR THEIR USE IN STEAM GENERATOR ON NUCLEAR POWER PLANTS

polymer materials in nuclear-power engineering. SUBSTANCE: invention provides high-purity polymer dispersant and scale conditioner added to feeding water entering secondary line of continuously functioning steam generator. High-purity polymer is selected from group composed of acrylic acid polymer,...

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Hauptverfasser:	BEJTS DZHOZEF D, EHGEBREKHT FILLIP M, KHAFF DZHEJMS D, MINNIS RAL'F, KELLI DZHON A
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE ORHEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOSITIONS BASED THEREON DIFFUSION TREATMENT OF METALLIC MATERIAL HEAT EXCHANGE IN GENERAL HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MECHANICAL ENGINEERING METALLURGY METHODS OF STEAM GENERATION MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR POWER PLANT NUCLEAR REACTORS ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS STEAM BOILERS STEAM GENERATION THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE WEAPONS
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Beschreibung
Zusammenfassung:	polymer materials in nuclear-power engineering. SUBSTANCE: invention provides high-purity polymer dispersant and scale conditioner added to feeding water entering secondary line of continuously functioning steam generator. High-purity polymer is selected from group composed of acrylic acid polymer, methacrylic acid polymer, polyacrylate, polymethacrylate, copolymers and terpolymers, acrylate/acrylamide copolymer, acrylate/methacrylate copolymer, and their mixtures. Invention also provides means for removal of metal oxides and polymer from discharge stream. EFFECT: prevented formation of scale, rust, or metal oxide deposits in secondary line of steam generator in the course of all operation phases. 52 cl, 1 dwg, 2 tbl