The chemical water treatment for improving coil-type direct-flow steam generators

Compared to boilers and drum steam generators, the uninterrupted operation of coil-type direct-flow steam generators requires improved feed water quality, which is difficult to achieve with conventional filters. The risk of deposits forming on the coil surface due to the poor quality of the water requires the best method of chemical water treatment, taking into account the operating conditions of the steam generator. The consideration of the most common methods of chemical water treatment and the modeling of the heat carrier flow through the coil pipes helps determine the chemical preparation of feed water. The article presents the results for water filters of various types, which are designed to ensure the normative chemical parameters of the coolant and the results of the modeling of the coaxial coil during the movement of chemically purified and source water. The optimal chemical purification of feed water is given.