Siphoning-type reboiler

Abstract

The invention relates to the technical field of heat-transfer equipment, particularly a siphoning-type reboiler which comprises a box body, a plate-type heat exchange module positioned inside the box body and a combiner box connected with one end of the plate-type heat exchange module. By arranging the pass partition capable of enabling the reciprocating flow of the heat source medium in the circumferential channel, the medium does not need to flow out of the plate and reenter the plate in the process of implementing reciprocating heat exchange condensation, so the reciprocating spaces are not needed on both sides of the box body; and therefore, the kettle-type reboiler has the advantages of small box body size, light weight, small pressure drop, low manufacturing cost, high heat transfer efficiency and compact structure. The heat source medium in the equipment is treated by the plate-type heat exchange module and then cooled to condense, and the negative pressure is generated due to the sudden decrease of volume, so the heat source medium is continuously siphoned into the reboiler; and thus, no external supercharging equipment is needed, thereby simplifying the equipment and saving the energy.

Description

technical field [0001] The invention relates to the technical field of heat transfer equipment, in particular to a siphon reboiler. Background technique [0002] The reboiler is a heat exchanger at the bottom or side line of the distillation column, which is used to vaporize a part of the liquid phase product and return it to the column for gas phase reflux, so that the contact mass transfer between the vapor and liquid phases in the column can be carried out, and at the same time provide the heat required for the distillation process , also known as reboiler. Most of the reboilers used in industry are shell and tube heat exchangers, mainly including kettle type, siphon type (vertical and horizontal), forced circulation type and built-in type. The siphon reboiler relies on the static pressure of the liquid in the tower kettle and the density difference of the two-phase flow in the reboiler to generate a driving force to form a siphon motion. The thermosiphon reboiler uses ...

AI Technical Summary

Problems solved by technology

[0003] At present, the heat exchange tubes in the siphon reboiler generally use ordinary light tubes. Due to the small heat transfer contact area of ​​the heat transfer tubes, the boiling of the medium is insufficient and the heat transfer efficiency is low; and the length of the single row of heat transfer tubes is very long. The volume of the reboiler is huge, resulting in a waste of space

Images