Steam Generating Fluid Survey

摘要

Steam generating power plant personnel know that many fluids are utilized throughout the process. These fluids must be of proper chemical and physical makeup, and must be conditioned correctly to minimize or prevent corrosion, deposition, mechanical failures and other difficulties within the steam generator. This article considers water. The high temperatures and pressures in a steam generator require water with dissolved ion concentrations in the low part-per-billion range. Treatment starts with the makeup stream. A typical makeup water system removes impurities in a step-wise process. Meanwhile, a full flow condensate polisher will remove dissolved ions, and this equipment is standard for once-through steam generators. It has seen that cooling water in-leakage via the condenser can cause very serious problems in the steam generator. A well maintained and operated biocide system is necessary to prevent microbiological fouling. The most common treatment chemicals are gaseous chlorine, liquid bleach, and bromine generated from a chlorine (or bleach) and bromide salt reaction.