| 摘要 |
<p>The reflux ratio of an industrial distillation column can be accurately varied in a programmed manner by passing the distillate through a reflux ratio regulator having an elongate housing having an elongate fluid inlet in a side wall thereof, a partition fitted axially in the housing perpendicular to the axis of the inlet and movable axially between the ends of the inlet; a first fluid outlet positioned on one side of the partition; a second fluid outlet positioned on the other side of the partition; means for varying the position of the partition along the inlet during the distillation, so that the partition divides the stream of distillate entering the housing in a varying ratio into two streams, one being withdrawn as distillate and the other being returned as reflux; and, optionally, a liquid stream divider downstream of the reflux ratio regulator comprising an elongate housing having in the side walls thereof a fluid inlet connected to one of the fluid outlets of the reflux ratio regulator and two fluid outlets, one connected to the head of the distillation column and one to means for collecting the product; a weir with a plurality of overflow indents in its upper edge positioned axially in said housing between the fluid inlet and the fluid outlets; and a liquid stream dividing wall mounted transversely in said housing and mounted perpendicularly to the weir, so that the stream of liquid flowing over the weir is divided by the dividing wall into two streams, one of which exists through the first fluid outlet and the other stream exits through the second fluid outlet.</p> |
