| 摘要 |
<p>Flushing liquor from a gas main of a coke oven undergoes separation in a tank to obtain water which is essentially free of tar and solids and to obtain tar which is essentially free from water and solids. A receiving chamber in the tank passes the flushing liquor to the bottom of a first group of inclined settlement surfaces above a tar and water phase boundary in the tank. The settlement surfaces are parallel to each other and corrugated to define troughs extending in the liquid flow direction. The water at the top of the settlement surfaces passes over a weir and the tar phase is received at the bottom of a second group of inclined settlement surfaces in the tank, the entrance way to which lies below the tar and water phase boundary. The inclined settlement surfaces of the second group are parallel to each other and corrugated to define troughs that extend in an upward liquid flow direction. An adjustable weir is downstream of a submerged wall to permit only the flow of tar from the area above the second group of settlement surfaces. A second adjustable weir controls the flow of an overlying layer of water on the tar into side chambers formed in the tank. Heating means are located in the tar phase below the entrance way to the second group of settlement surfaces. A scraper conveyor underlies both groups of settlement surfaces for discharging solid particles settling onto it in the tank.</p> |
