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Comment PDF Water Treatment

Treating Boiler Feedwater for Reliable Operation

By Chemical Engineering |

These key elements of internal boiler feedwater (BFW) treatment will help avoid boiler tube failures due to scale and pitting For many chemical processes, an industrial packaged-type boiler is a critical component for either power generation or for producing steam. In the event that boilers are taken offline due to a failure, the facility may experience a loss of power or production downtime, each carrying significant economic consequences. Improper treatment of boiler feedwater can result in boiler tube failures due to oxygen pitting and scale buildup on internal heating surfaces. This article provides an overview of proper boiler feedwater treatment to help plants avoid failures. Boiler feedwater treatment typically comprises a combination of several different processes, each designed to remove certain contaminants from raw make-up water or condensate return water. These processes can be divided into two parts: an upstream water-treatment system and a chemical treatment program. The upstream processes can include a combination of filtration, water softening, demineralization, reverse osmosis and de-aeration, depending on the quality of the raw water used. The chemical treatment program would include the introduction of chemicals…
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