Organic Water Treatment Chemicals versus Ammonia and Hydrazine

摘要

Power plants use ammonia (or amines) for pH control of the condensate/feedwater circuits andrnhydrazine (or organic substitutes) for oxygen scavenging. Organic amines and oxygen scavengers break downrninto organic acids and carbon dioxide, which increase steam conductivity. This has caused difficulties in attainingrncation conductivity limits in steam during startup, and in many cases after start-up. Experience has shown thatrnswitching to ammonia and hydrazine during the start-up phase improves the chances of attaining the steamrnturbine vendor’s steam quality limits in a shorter time.