Technical data: Water treatment and process flow for steam injection boilers

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Water treatment and process flow for steam injection boilers Section 1: Overview The main tasks of water treatment in steam injection boilers are to reduce the levels of calcium and magnesium salts in the water, prevent scaling on the inner walls of the boiler tubes, and decrease the amount of dissolved gases in the water, thereby reducing corrosion of the boiler’s heating surfaces. Water is an important working medium for heat transfer in boilers. A stable supply of an adequate amount of water of qualified quality is essential for the safe operation of boilers. Poor water quality poses three major hazards to boilers: (1) scaling, (2) salt deposition, and (3) corrosion. I. Water quality indicators: (1) Suspended solids, (2) Dissolved solids, (3) Hardness, (4) Alkalinity, (5) pH value. (2) Water quality standards for boilers. Indicator SG hardness, ppm