| 摘要 |
The present invention relating to a marine liquefied natural gas fractional distillation apparatus using a divided wall type distillation column has minimum distillation columns to reduce energy consumption; and to correspond to the marine liquefied natural gas fractional distillation process by reducing the number of distillation columns when the distillation operation starts capable of making high efficiency distillation columns smaller in the marine liquefied natural gas process. According to the present invention, a low point component such as a methane-ethane mixture, a middle point components such as propane-butane mixture, and a high point component such as a peptane-heptane mixture are separated from the methane mixture, ethane mixture, propane mixture, butane mixture, and pentane mixture by installing the divided wall type distillation column. |
