Low-energy consumption seawater desalting system and method

Abstract

The invention discloses a low-energy consumption seawater desalting system which comprises a seawater pump and a seawater desalting tank, wherein a diversion valve is connected with a discharge end ofthe seawater pump; a plurality of diversion tubes are connected with the diversion valve; an optical energy heating mechanism is connected with the plurality of the diversion tubes together; and theoptical energy heating mechanism comprises a plurality of seawater heating mechanisms which are arranged in a matrix manner. The invention further discloses a low-energy consumption seawater desaltingmethod which comprises the following steps: S1, sucking seawater; S2, performing diversion heating; S3, performing confluence; S4, performing reverse osmosis filtration; S5, performing vapor condensation; and S6, collecting fresh water. As seawater is heated by using a sooting metallic plate and a sooting metallic semicircular tube, the cost of equipment can be lowered; due to adoption of atomization nozzles, the evaporation speed and the evaporation amount of seawater can be increased, and the seawater is further desalted through a reverse osmosis membrane; in addition; precipitate is not separated from salt in the seawater, high-concentration seawater after desalting is taken as a condensation agent of vapor, the material cost can be lowered, and in addition, energy consumption can be reduced.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a low-energy seawater desalination system and method. Background technique [0002] Seawater desalination is the use of seawater desalination to produce fresh water. It is an open-source incremental technology to realize the utilization of water resources. It can increase the total amount of fresh water and is not affected by time, space and climate. It can ensure stable water supply such as drinking water for coastal residents and supplementary water for industrial boilers. Currently, Seawater desalination equipment is increasingly being researched in the direction of low energy consumption equipment, in order to achieve the purpose of increasing production and reducing costs. [0003] Existing low-energy seawater desalination devices generally use solar energy evaporation methods, such as the "solar seawater desalination system" described in the invention patent w...

AI Technical Summary

Problems solved by technology

[0003] Existing low-energy seawater desalination devices generally use solar energy evaporation methods, such as the "solar seawater desalination system" described in the invention patent with application number 201310232944.7, which uses solar heating devices to heat and distill, and increases heat through temperature-increasing heat storage devices The utilization rate can avoid heat loss and waste, but the cost of the solar heating device used in this invention is relatively high, and the desalination of seawater only through distillation will lead to the formation of more mineral scale deposits in the distillation header as the water evaporates. Affect the pressure in the distillation header, the pressure may be too high and cause damage to the device if used for a long time

Images