MVR falling film evaporator

Abstract

The invention discloses an MVR falling film evaporator. The evaporator comprises a steam inlet pipe, an upper pipe plate, a film distributor, a barrel, a spiral distortion heat exchange pipe, a condensate outlet pipe, a lower pipe plate, a confluence chamber and a separation chamber; the film distributor is connected to the upper end of the barrel through the upper pipe plate, the confluence chamber is connected to the lower end of the barrel through the lower pipe plate, the steam inlet pipe is communicated with the upper part of the barrel, the condensate outlet pipe is communicated with the lower part of the barrel, and the side surface of the separation chamber is connected with the confluence chamber through a steam-liquid channel; and the multiple spiral distortion heat exchange pipes are laid in the barrel, and the two ends of each spiral distortion heat exchange pipe are installed on the upper pipe plate and the lower pipe plate correspondingly to form a heat exchange tube bundle communicating the film distributor with the confluence chamber. According to the falling film evaporator, a better film forming effect and a higher Reynolds number of a medium in the tube can be obtained, the processing capacity of the falling film evaporator is improved, the anti-scaling capacity and the anti-vibration capacity are high, a baffle plate is not needed, and the power consumption of the MVR compressor for overcoming steam resistance is reduced.

Description

technical field [0001] The invention relates to the field of energy saving and environmental protection, in particular to an MVR falling film evaporator. Background technique [0002] Evaporation equipment is widely used in pharmaceutical, light industry food, petrochemical, biological engineering and other industries. Compared with traditional evaporators, MVR evaporators have obvious advantages in energy saving and environmental protection, and reduce operating costs. They are the best upgrading equipment for traditional multi-effect evaporators. As the country and society pay more and more attention to environmental protection and energy saving and emission reduction, it has become a trend for MVR evaporators to replace traditional evaporators. [0003] Due to the high concentration and high toxicity of industrial wastewater, it is difficult to meet the discharge standard or the treatment cost is too high by general biochemical and chemical methods. It can recycle some ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a novel MVR falling film evaporator to solve the problems of the existing MVR falling film evaporator with large heat transfer area, high cost and insufficient shock resistance, and help to improve Anti-scaling ability of MVR evaporator and reduction of compressor operating power consumption

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