Low-temperature multi-effect distilled seawater desalination system with variable effect groups

Abstract

The invention relates to the technical field of seawater desalination, in particular to a low-temperature multi-effect distilled seawater desalination system with variable effect groups, which is used for improving the adaptability of the low-temperature multi-effect distilled seawater desalination system. The invention discloses the low-temperature multi-effect distilled seawater desalination system with variable effect groups, which comprises a condenser and various-effect evaporators that are connected in series sequentially, a steam pipeline used for connecting a raw material seawater source, a raw material steam source, various-effect evaporators with the condenser, a seawater feeding pipeline, a concentrated seawater discharging pipeline, a product water discharging pipeline, a concentrated seawater conveying pipeline, a concentrated seawater return pipeline and a concentrated seawater pipeline as well as control valves arranged on the pipelines.

Description

Technical field [0001] The invention relates to the technical field of seawater desalination, and in particular to a low-temperature multi-effect distillation seawater desalination system with a variable effect group. Background technique [0002] Low-temperature multi-effect distillation seawater desalination technology usually refers to the desalination technology in which the maximum evaporation temperature of seawater is lower than 70℃. The low-temperature multi-effect distillation seawater desalination system connects a series of evaporators in series to form different evaporation groups, using a certain amount of steam The water and seawater are input into the evaporator connected in series. In the evaporator, the steam and seawater exchange heat, so that the seawater is evaporated and condensed many times, so as to obtain a desalination process of distilled water that is multiple times the amount of steam. The low-temperature multi-effect distilled seawater system currentl...

AI Technical Summary

Problems solved by technology

[0003] The defect of the existing technology is that after the existing low-temperature multi-effect distillation seawater desalination system is assembled, the number of evaporation groups is fixed and cannot be changed, which cannot meet the needs of different seawater treatment. When the number of evaporation groups needs to be changed, only A new low-temperature multi-effect distillation seawater desalination system can be rebuilt, and the adaptability is relatively low

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