Raising membrane distributing water type evaporator

Abstract

The invention is a climbing film water evaporator, relating to water evaporating device field. It includes evaporator and matchable pipes. The character lies in: the evaporator body is made up of two segments, the upper one is steam and water separation segment, the lower is evaporating segment. The invention makes the water distribution in climbing film pipes even, and it uses double-evaporation structure, the use factor of heat is upgraded greatly, the evaporator works stably, it can upgrade the efficiency of evaporated water, and reduces the cost.

Description

technical field [0001] The invention relates to the field of water distillation equipment, in particular to a rising film water distribution evaporator. Background technique [0002] At present, the equipment for producing medical distilled water generally adopts multi-effect distilled water machines. The distilled water machine is connected in series by multi-effect evaporators. Most of the structures of the evaporators in the prior art are that the upper section is a water distribution section, and the lower section is an evaporation section. The structure of the evaporator adopts the upper water distribution structure, the raw material water is easy to form part of the falling film flowing down the tubes, part of the water column flows down in the tubes, and part of the tubes are short of water, resulting in uneven distribution of raw material water in each tube, and the affected The steam pressure of the boiler is unstable, and the output of the secondary steam is also ...

AI Technical Summary

Problems solved by technology

The structure of the evaporator adopts the upper water distribution structure, the raw material water is easy to form part of the falling film flowing down the tubes, part of the water column flows down in the tubes, and part of the tubes are short of water, resulting in uneven distribution of raw material water in each tube, and The steam pressure of the boiler is unstable, and the output of the secondary steam is also unstable. Under the fluctuation of the back pressure of the secondary steam, the raw material water flows down in the tubes intermittently. In addition, it is affected by the evaporator Due to the limitation of the length of the tubes, the raw water cannot be fully evaporated in a unit time, and the high-temperature steam of the first effect is always working in the evaporation section, the utilization rate of heat energy is greatly reduced, and the steam energy produced by the upper effect is low. The heat energy received by the effect evaporator is reduced, and the subsequent evaporation energy of each effect evaporator is also reduced correspondingly, which directly leads to energy waste and a great reduction in the yield of distilled water. How to solve similar problems has become a topic for technicians in this industry.

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