Operating system and equipment composition of distillation tower equipment

The distillation tower equipment is mainly composed of simple distillation tower, reboiler, condenser, reflux tank and other equipment in the process of use. Generally, according to the process sequence, as far as the requirements of the specification are met, it is arranged as close as possible to form an independent operating system. The same kind of equipment is arranged centrally. For example, the condenser is generally arranged on the three-story floor, the reflux tank is arranged on the second floor, the reboiler is installed at the bottom of the distillation tower, and the pump is arranged on the first floor. This is not only neat, beautiful, but also easy to operate. Due to the special nature of the reboiler, the equipment and piping associated with it must be carefully designed.

The distillation column equipment heats the liquid at the bottom of the column to a certain extent through its reboiler, partially vaporizes it, enters the column from the bottom reboiler into the column, and contacts the descending liquid in countercurrent two phases, and the falling liquid is volatile. The (low boiling point) component is continuously transferred to the vapor, and the less volatile (high boiling point) component in the vapor is continuously transferred to the descending liquid. The closer the vapor is to the top of the column, the higher the concentration of the volatile component is, and the lower the liquid is. Near the bottom of the tower, the more volatile components are more concentrated, achieving the purpose of component separation. The rising vapor at the top of the column enters the condenser, a portion of the condensed liquid is returned to the top of the column as reflux, and the remainder is sent as a distillate. The liquid flowing out from the bottom of the column, a part of which is sent to the reboiler to heat the return tower, and the other part of the liquid is taken as the residual liquid.www.heczb.com