So what is the maximum liquid-gas ratio in the distillation section?The reflux ratio without low boiling point product removal (full reflux) is of course a limiting state.Of course, the actual liquid-gas ratio can only be greater than the minimum liquid-gas ratio and smaller than the maximum liquid-gas ratio.It is shown on the gas-liquid equilibrium data diagram that a line starting from the gas phase composition of distillation feed is upward. The angle between the line and the cross axis is determined by the ratio of the international liquid-gas ratio and the minimum liquid-gas ratio.