Automatic dust removal board type falling film generation device utilizing waste heat of exhaust gas

Abstract

The invention discloses an automatic dust removal board type falling film generation device utilizing waste heat of exhaust gas. The automatic dust removal board type falling film generation device comprises a shell, n falling film units, a suspended liquid receiving tank, a suspension line and a siphon. A solution outlet is formed in the bottom end of the shell. Each falling film unit comprises a falling film board, an upper section S-shaped planer spring, a lower section S-shaped planer spring, a bar magnet and a dust scraping device, wherein the bar magnet and the dust scraping device are located on the two sides of the falling film board, the top end of the upper section S-shaped planer spring is connected with the wall face of the falling film board, the bottom end of the upper section S-shaped planer spring is connected with the top face of the bar magnet, the top end of the lower section S-shaped planer spring is connected with the bottom face of the bar magnet, and the bottom end of the lower section S-shaped planer spring is connected with the suspended liquid receiving tank. The siphon is located inside the suspended liquid receiving tank. According to the automatic dust removal board type falling film generation device, the siphon principle is utilized, by the arrangement of the S-shaped planer springs for automatic and reciprocating washing, springs on the falling film walls can move in an automatic and reciprocating mode, channeling or plumes can be effectively restrained from being generated, the liquid film distribution is uniformed, and the falling film generation device has the automatic scale removal function.

Description

technical field [0001] The invention belongs to the technical field of absorption refrigeration utilizing waste heat of flue gas, and in particular relates to an automatic ash-removing plate type falling film generating device utilizing waste heat of flue gas. Background technique [0002] Most of the existing absorption refrigeration generators are immersion type and spray type. The immersion type generator is greatly affected by the static pressure of the liquid, which will increase the saturation temperature of the solution inside the liquid, weaken the driving force and reduce the out of range. The spray generator can effectively overcome the influence of hydrostatic pressure, but it is difficult to completely wet the heat transfer surface, and the heat transfer effect will also be affected. Using a falling film generator can effectively avoid the influence of the static pressure of the solution. However, due to the change of the physical properties of the falling film ...

AI Technical Summary

Problems solved by technology

For the shell-and-tube falling film generator, the dust accumulation on the outer wall of the falling film tube, especially on the windward side, will seriously reduce the heat transfer performance of the falling film tube, increase the heat transfer resistance, and affect the overall performance of the generator.

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