| 摘要 |
PROBLEM TO BE SOLVED: To provide a system for injecting a chemical solution, capable of reducing a difference in the amounts of a depositing substance caused among members with which cooling water comes into contact in a plant.SOLUTION: A chemical solution-injecting system 30 includes: a chemical solution reservoir 31 that stores a chemical solution containing a depositing substance to deposit to a member that comes in contact with cooling water for absorbing heat in a plant; a pipe 32 through which the chemical solution passes; a first heat exchanger and a second heat exchanger that exchange heat between the cooling water and the chemical solution; a cooling water pipe 49 which connects the heat exchangers in series and in which the cooling water passes; and a pump 34 that conveys the chemical solution. A temperature of the chemical solution in the chemical solution reservoir 31 is lower than that of the cooling water. The pipe 32 sequentially connects the chemical solution reservoir 31, the first heat exchanger, the second heat exchanger and the plant. The cooling water guided from the inside of the plant passes through the second heat exchanger and subsequently passes through the first heat exchanger. The chemical solution passes through the first heat exchanger and subsequently passes through the second heat exchanger. |
