| 摘要 |
FIELD: petrochemistry. ^ SUBSTANCE: industrial oil is treated with purifying reagent. As purifying reagent 25-40 % fresh aqueous solution of chloramine, benzene sulfonic acid and calcium chloride mixture in mass ratio of 3-7:1-2:5, respectively, is used. Said reagent is charged into exhaust industrial oil heated to 15-60°C in amount of 5-60 kg per 1 m3 of oil (calculated as dry matter). Process includes 60 cycles comprising sequential steps of mixture agitation for 0.5-3 h and conditioning for 1-12 h. Then obtained product is conditioned for 24-48 h, upper oil layer is drawn off and product is conditioned again at 15-55°C for 7-14 days followed by drawing off of target product-containing upper layer. ^ EFFECT: decreased energy consumption; increased purifying ratio. ^ 1 ex |
