| 摘要 |
Feed material, for exemple, a petroleum heavy oil or tar, is continuously introduced via a valve (6) to a reaction zone (1) of a vessel in which it is heated, suitably at 380 to 430 DEG C, and stirred (4). An optically anisotropic pitch phase is continuously developed which falls via a baffle means (3) to the lower part of a substantially non-stirred settling zone (2). The phase is held at a temperature below 400 DEG C during its residence in and passage through the settling zone and is continuously removed from the zone via a valve (8). |
