A falling film evaporator

Abstract

The invention relates to the technical field of evaporation devices, and concretely relates to a falling film evaporator. The falling film evaporator comprises a shell, a material inlet, a material distribution system, a liquid distribution plate and a tube plate, and the material distribution system, the liquid distribution plate and the tube plate are sequentially arranged below the material inlet from top to bottom; the material distribution system uniformly distributes a liquid entering from the material inlet to the liquid distribution plate, and a plurality of evaporation tubes are uniformly inserted to the tube plate; the lower surface of the liquid distribution plate is provided with a plurality of distributors, the distributors are perpendicular to the liquid distribution plate, the distributors correspond to the evaporation tubes one to one in quantity and position, fixed parts are fixed on the liquid distribution plate, and film forming parts are inserted to the evaporation tubes; a plurality of through holes are uniformly arranged in the liquid distribution plates, and the through holes are interlaced to the distributors; and the liquid distribution plate is provided with a regulator, and the regulator drives the liquid distribution plate to move up and down. The falling film evaporator realizes online flow adjustment through the regulator arranged on the liquid distributor in order to improve the evaporation effect.

Description

technical field [0001] The invention relates to the technical field of evaporation equipment, in particular to a falling film evaporator, and more particularly to a falling film evaporator with online adjustable flow distribution. Background technique [0002] The falling film evaporator is a kind of efficient evaporation equipment, which belongs to the category of thin film evaporators. Generally, thin film evaporators can be divided into three types: rising film evaporators, falling film evaporators, and wiped film evaporators. Among them, vertical falling film evaporators are one type of falling film evaporators. The vertical falling film evaporator has the advantages of high heat transfer coefficient, short heating time of materials, no degradation of heat-sensitive materials, small pressure drop, small loss of heat transfer temperature difference, energy saving, not easy to scale, and small amount of stagnant liquid, etc. Therefore, it is widely used in chemical indust...

AI Technical Summary

Problems solved by technology

However, the processing capacity of the traditional falling film evaporator generally follows the completion of the design and manufacture, and the film-forming flow rate of the evaporator tube is fixed, or it needs to be shut down and disassembled for adjustment, which cannot be adjusted online, so that it cannot meet the above advantages according to needs.

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