| 摘要 |
PURPOSE:To recover water containing mercaptan, etc., in a closed system, to prevent leakage to the atmosphere and to improve a recovery rate by supplying the water containing acetone and mercaptan to a water receiving tank and sending to a mercaptan recovering distillation column together with a liquid phase. CONSTITUTION:The reaction product R from a reaction column is fed to the light fraction recovering distillation column A, and by reducing pressure with a steam ejector type vacuum generating device S, a light component (mercaptan, acetone, phenol, water, etc.) reaches a condenser C through a piping (a), and cooled once, and most of the component is liquefied, and enters the water receiving tank B through a piping (k). The gas phase (mercaptan, acetone, water, nitrogen, etc.) reaches the vacuum generating device S and is mixed with water, and cooled with a water-cooling jacket W, and a concentrated component (mercaptan, acetone, water, etc.) is passed through an outlet piping (d), and introduced into the piping (k) (or the water receiving tank B) from a piping (f). |
