Making the Operational Cleaning of Hot-Water Boilers More Efficient

摘要

We present the results of operations for chemically cleaning hot-water boilers with solutions of hydrochloric and sulfuric acids with a specific contamination of up to 3000-4000 g/m~2 or more and content of organic compounds in deposits of up to 20%. Limits for advisable use of these acids were determined, and a positive effect from exposing the surfaces to preliminary alkalization for a longer time was found. The admissible level of residual specific contamination after cleaning is substantiated.