Shell and tube vertical type anti-scaling falling film absorbing device

Abstract

The invention discloses a shell and tube vertical type anti-scaling falling film absorbing device. The shell and tube vertical type anti-scaling falling film absorbing device comprises an outer shell, falling film tubes, a liquid distribution plate, elastic flow guide pieces, springs and a liquid receiving plate. A cooling water outlet is connected with the top ends of the falling film tubes through a first water tube. The bottom ends of the falling film tubes are connected with a cooling water inlet through a second water tube. The liquid distribution plate is provided with liquid distribution holes, the falling film tubes penetrate through the liquid distribution holes, and the elastic flow guide pieces are fixedly connected to the lower ends of the liquid distribution holes. The outer sides of the falling film tubes are sleeved with the springs. The top ends of the springs are fixedly connected to the elastic flow guide pieces. The bottom ends of the springs are connected with the bottom surface of the liquid receiving plate through steel wires. Siphons are arranged in the liquid receiving plate. According to the shell and tube vertical type anti-scaling falling film absorbing device, the siphoning principle is utilized; as the springs can automatically cleaned in a reciprocating mode, the springs outside the falling film tubes automatically reciprocate, liquid film disturbance is enhanced, liquid film distribution is homogenized, and the falling film absorbing device further has the automatic de-scaling function. In this way, the gas absorption rate of the absorbing device is increased, and service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of absorption refrigeration, and in particular relates to a tube shell vertical anti-scaling falling film absorption device. Background technique [0002] Falling film absorbers have important applications in absorption refrigeration, air conditioning and chemical industries. In a common shell-and-tube vertical falling film absorber, the absorption solution flows into the liquid distribution pan from the top, and then forms a liquid film through the liquid distribution holes in the liquid distribution pan, and moves along the falling film tube in the shape of the liquid film. Downflow while absorbing gas from the absorber body. Inside the tube is cooling water, which is used to cool the liquid film, so that the temperature of the liquid film decreases, and the corresponding saturation concentration increases, which increases the concentration difference between the current concentration and the saturation c...

AI Technical Summary

Problems solved by technology

[0005] In addition, during the flow process of the liquid film, due to the change of the physical properties of the outer wall of the falling film tube, the distribution of the liquid film is often uneven, and even the phenomenon of falling film trunk, channel flow or stream flow occurs, which will reduce the effectiveness of the liquid film. absorption area, resulting in a decrease in absorption rate

The impurities, flocs, and sediments adsorbed on the outer surface of the falling film tube for a long time will also affect the distribution of the liquid film, the absorption effect and the heat transfer effect with the cooling water.

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