Treatment of electric hydraulic control fluid (EHC Oil) with steam-reforming system

水蒸気改質処理法による電気油圧式制御油(EHC油)の処理試験

岡留 善裕 ; 青山 佳男 ; 佐々木 悠; 福嶋 峰夫 

Okadome, Yoshihiro; Aoyama, Yoshio; Sasaki, Yu; Fukushima, Mineo

Electric Hydraulic Control fluid (EHC Oil) is used as the working fluid in the high-pressure EHC system on steam turbine-generator unit of nuclear power plant. Disposal EHC Oil is stored as radioactive secondary waste and can be incinerated, however phosphorous compounds will be generated. Phosphorous compounds causes corrosion of incinerator wall and clogging of filter. The objective of this study is to develop the treatment for the disposal EHC Oil using steam-reforming system which has a potential for reduction of radioactive secondary waste. We conducted the treatment test using EHC Oil and n-dodecane mixture as simulated disposal EHC Oil with 3.5wt% of phosphorus compounds. We measured the weight reduction rate of the simulated disposal EHC Oil in the gasification chamber. As the results, more than 99% of the simulated disposal EHC Oil was gasified from the gasification chamber at temperature of 600 or more.