Kettle-type reboiler

Abstract

The invention relates to the technical field of heat-transfer equipment, particularly a kettle-type reboiler which comprises a box body, a plate-type heat exchange module positioned inside the box body, a header box connected with one end of the plate-type heat exchange module, and a weir plate arranged perpendicular to the bottom of the box body, wherein an overflow region is arranged to ensure the liquid in the evaporation region to completely immerse the plate-type heat exchange module; and the overflow region is used as an overflowing liquid buffer region to collect the overflowing liquid, and the overflowing liquid is output by a liquid outlet and enters the evaporation region via a liquid inlet. By arranging the pass partition capable of enabling the reciprocating flow of the 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, 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.

Description

technical field [0001] The invention relates to the technical field of heat transfer equipment, in particular to a kettle-type 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. There is an overflow weir at the end of the tube bundle of the kettle reboiler to ensure that the tube bundle can be effectively immersed in the boiling liquid, so the circulation is carried out between the tube bundle and the su...

AI Technical Summary

Problems solved by technology

[0003] At present, the heat exchange tubes in the kettle-type reboiler generally adopt ordinary bare 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

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