| 摘要 |
The present invention discloses a feed water composition for boilers whose main ingredient is a purified ethylene glycol aqueous solution that is a mixture of purified ethylene glycol and pure water in a weight ratio of 70-9 0 : 10-30 wt%. The inventive feed water composition comprises 92.1 to 98.8 wt% of the purified ethylene glycol aqueous solution, 0.1 to 2.0 wt% of sodium benzoate, 0.1 to 1.5 wt% of tolyltriazole, 0.1 to 0.7 wt% of triethanol amin e, 0.5 to 1.5 wt% of sodium nitrate, 0.3 to 1.2 wt% of sodium molybdate, and 0. 1 to 1.0 wt% of potassium hydroxide. The feed water composition of the present invention prevents the formation of corrosion and scales on internal engines and pipes for boilers, thus making its circulation smooth. Its thermal efficiency is particularly high. Also in severely cold weather, it does not freeze even when the power of the boiler is off for energy saving, thus preventing the cracking of the internal engines and pipes for boilers. In addition, it can be used semi-permanently. |
