| 摘要 |
<p>With the process of preparing high-boiling petrol compounds from pyrolysed C9-fraction the re-distillation of the distillation residue from the process of selective hydrogenation is performed in the re-distillation column (1) of ten theoretical levels at atmospheric pressure at the top of the column, pressure loss in the column of 3 to 10 kPa, and the heated steam at a pressure of 1.0 to 1.8 MPA, whereas the boiling point in the column (1) digester (4) of 175-185 degrees C is achieved by direct injection of the thinner vapours into the column (1) digester (4) through a thinner vapour separator (17). An inflow (13) of medium and/or low pressure thinner vapours is connected to the digester (4) through the thinner vapour separator (17).<IMAGE></p> |
