Vertical-tube falling film absorption reactor

Abstract

A vertical-tube falling film absorption reactor comprises an upper tube box, a lower tube box and a shell, wherein the shell is arranged between the upper tube box and the lower tube box and is connected with the upper tube box and the lower tube box in a sealed manner respectively; a tube plate is arranged at each of the upper end and the lower end of the shell; a vertical tube bundle is arranged between the two tube plates; a film distributing device is arranged inside the shell; the film distributing device comprises an upper liquid distributing plate, a lower liquid distributing plate, and a barrel-shaped overflowing plate arranged on the upper liquid distributing plate; film distributing annular spaces are formed between lower liquid distributing plate tube holes in the lower liquid distributing plate and heat exchange tubes running through the lower liquid distributing plate tube holes; centering bulges for centering the heat exchange tubes are arranged inside the lower liquid distributing plate tube holes; spiral grooves are formed in the outer walls of the heat exchange tubes. The vertical-tube falling film absorption reactor uses the more reasonable film distributing device, so that purposes of uniformly distributing a liquid film and stably forming the film can be achieved, a dry wall phenomenon can be avoided, and the heat transfer efficiency and the mass transfer efficiency are greatly improved.

Description

technical field [0001] The invention relates to an absorption reaction device, in particular to a vertical tube falling film absorption reactor. Background technique [0002] As a high-efficiency energy-saving equipment, absorption reactor is widely used in the production of chemical industry, refrigeration, waste heat recovery and other industries. In the current market, the most common absorption reactors are mainly horizontal tube falling film absorption reactors and vertical tube falling film absorption reactors (hereinafter referred to as vertical tube falling film absorption reactors). [0003] The tube bundle in the vertical tube falling film absorption reactor is a vertical heat exchange tube, and the cooling medium is passed through the heat exchange tube, and the solution outside the heat exchange tube is evenly distributed on the outer wall of the heat exchange tube through the film distribution device, and the solution is in the form of a falling film in the exch...

AI Technical Summary

Problems solved by technology

Uneven cloth film will affect the absorption of gas in the shell side and reduce the heat and mass transfer efficiency; when the dry wall phenomenon is serious, it will cause damage to the heat exchange tube, eventually lead to equipment shutdown, and even cause safety accidents, which will bring a lot of losses to the enterprise Economic losses

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