Forced circulating reboiler

Abstract

The invention discloses a forced circulating reboiler. The top and bottom of a cylinder (9) are respectively connected with upper and lower end sockets (10 and 11) to form a reboiler body; the inner wall of the cylinder (9) is respectively connected with upper and lower annular plates (8 and 7); central ring holes of the upper and lower annular plates (8 and 7) are connected with a cylindrical plate to form a guide cylinder (4); a heat exchange tube (6) is connected between the upper and lower annular plates (8 and 7); a push type agitating device (3) is arranged in the guide cylinder (4) and connected with an agitating transmission device (1) positioned outside the reboiler body; the upper part of the wall of the cylinder (9) is provided with a liquid outlet (13); and the top of the upper end socket (10) is provided with a gas phase outlet (14) and a liquid inlet (12). The forced circulating of materials is realized by using the push type agitating device; not all components need to be in a boiling state and the liquid height in the reboiler is reduced so as to reduce the operating temperature in the reboiler and shorten the retention time of the materials; and the reboiler is particularly suitable for the separation of the materials with large difference between boiling points, high thermal sensitivity and toxicity.

Description

technical field [0001] The invention belongs to the fields of chemical equipment manufacturing and chemical process flow, and in particular relates to a forced circulation reboiler. Background technique [0002] Reboiler (evaporator) is an important basic chemical equipment, widely used in rectification, evaporation and other processes. Classified from the form: vertical thermosiphon reboiler; horizontal reboiler; falling film, rising film reboiler; forced circulation reboiler; scraper reboiler, etc. [0003] The vertical thermosiphon reboiler or static evaporator relies on the fluid density difference generated by the temperature difference in the tube (in the evaporator) to form a fluid circulation. For materials with high viscosity, the vertical thermosiphon reboiler or evaporator has a small flow rate due to the density difference, so the convective heat transfer coefficient is small. In order to enhance the heat transfer effect, a pump is traditionally used for forced...

AI Technical Summary

Problems solved by technology

Most organic objects have coking phenomenon at high temperature, and coking will affect the distribution effect of falling film reboiler, which will affect the liquid film formation and reduce the efficiency

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