Feed liquid distribution film forming device of falling film evaporator

Abstract

The invention discloses a feed liquid distribution film forming device of a falling film evaporator, which comprises a liquid distribution mechanism and heat exchange tube inserters formed into an array, wherein the liquid distribution mechanism is connected with a feed inlet through a liquid tube and is in two-stage cascade connection; the heat exchange tube inserters are uniformly distributed and fixed at the lower side of the liquid distribution mechanism; the liquid distribution mechanism comprises a liquid inlet buffer, a first-stage V-shaped groove overflow liquid distribution device and a second-stage hole-shaped liquid distribution device; and each heat exchange tube inserter is provided with a flexible center positioning mechanism and three lateral liquid inlet holes for equally dividing the circumference. In the invention, two-stage cascade connection liquid distribution of combination of the overflow with a buffering mechanism and the small holes which are uniformly distributed is adopted, and the semicircular hole lateral liquid inlet and the flexible center positioning mechanism are combined, so that the feed liquid distribution film forming device is automatically centered in a heat exchange tube, thereby ensuring that the gap between the liquid distribution device and the tube wall is always uniform and consistent; the liquid distribution mechanism in two-stage cascade connection improves the uniformity of the formed film, thereby improving the heat exchange area and the vaporization efficiency of the heat exchange tube; and in addition, liquid distribution heads can be produced in batches, thereby increasing the exchangeability of products and being convenient in assembly and disassembly.

Description

technical field [0001] The invention relates to a multi-application industrial heat exchange tube film cloth element, in particular to a material liquid distribution film forming mechanism for a falling film evaporation device, which belongs to the field of mechanical device design. Background technique [0002] In chemical equipment, changing the liquid phase to the gas phase is a common phase transition process in chemical equipment, and the realization of this phase transition process with high efficiency and energy saving is a long-term research topic in chemical equipment. In the process of liquid vaporization, it needs to absorb heat to increase its energy enough to vaporize into steam. In the process of absorbing heat, the larger the heat exchange area, the higher the heat exchange efficiency and the higher the vaporization efficiency. The high efficiency of the shell and tube falling film evaporator lies in the fact that the liquid passing through the heat exchange t...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned multi-application selectivity of the existing feed-liquid distribution film-forming device, the purpose of the present invention is to propose a feed-liquid distribution film-forming device for a falling-film evaporator to solve the problem of uneven liquid film distribution and liquid film formation in traditional liquid distributors. Disadvantages such as large thickness fluctuations, poor product interchangeability, and inconvenient assembly and disassembly, improve the versatility of the material-liquid distribution film forming device

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