MVR (Mechanical Vapor Recompression) multi-level evaporation device

Abstract

The invention discloses an MVR (Mechanical Vapor Recompression) multi-level evaporation device which at least adopts two evaporators mutually connected in series and is capable of achieving a quite considerable energy-saving effect by virtue of a multi-level configuration mode. A to-be-treated waste liquid is directly adopted as a cooling medium, a vapor compressor is arranged at a secondary vapor outlet of the final evaporator, the vapor compressor, the final evaporator and the front evaporator are combined into an organic combination body, a secondary vapor pipeline and a secondary vapor compressor are omitted, and the pipeline and structure damping for vapor is greatly reduced, so that the compression efficiency is improved, energy losses are reduced, and the cost and operating cost of the whole device can be greatly lowered.

Description

technical field [0001] The invention relates to an MVR evaporation device, in particular to an MVR evaporation device composed of multi-stage evaporators. Background technique [0002] In order to solve the water shortage in some areas, ensure people's normal life and promote the sustainable development of industries, my country has implemented a huge water diversion project in several stages, using a lot of manpower and material resources, but still has not fundamentally solved the distribution of fresh water resources in our country The fact of unevenness and water stress. At the same time, in our country, industries such as electric power, coal and petroleum discharge huge amounts of industrial sewage into rivers, lakes and seas every day, and the recycling rate is not high, resulting in waste of limited water resources and environmental pollution to a certain extent. Therefore, the contradiction between the shortage of water resources and the low utilization rate and the...

AI Technical Summary

Problems solved by technology

However, with the extensive implementation of quantitative measures for energy saving and consumption reduction in our country, in the actual use process, the traditional MVR evaporation system has encountered technical bottlenecks in the face of further realizing the goal of energy saving and consumption reduction.

At the same time, the MVR evaporation system is only an evaporation unit, and the shortcomings of low process adaptability are fully exposed in the actual use process. It needs to be assisted by other systems, otherwise, the use needs cannot be completed independently.

Therefore, the existing MVR evaporator is a single MVR evaporator

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