| 摘要 |
FIELD: producing of caprolactam. ^ SUBSTANCE: device comprises two stages, circuits for circulation in the first and in the second stages, mixers for mixing cyclohexane, hydroxylamine sulfate, and ammonium, recycle of ammonium sulfur, pumps, heat exchanger, separating vessels, tanks for mixing and drying, pickups, and valves for control of pH of fluid by means of supplying ammonium. ^ EFFECT: enhanced efficiency. ^ 1 cl, 2 dwg, 2 tbl, 2 ex |
