Seawater desalination and chemical resource comprehensive extraction device and extraction method thereof

A technology for comprehensive extraction and resource extraction, applied in the field of seawater desalination and chemical resource comprehensive extraction devices, can solve the problems of large equipment footprint and high energy consumption, reduce floor space, reduce average cost, and realize comprehensive utilization of seawater chemical resources Effect

Inactive Publication Date: 2009-10-28
TIANJIN POLYTECHNIC UNIV
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  • Seawater desalination and chemical resource comprehensive extraction device and extraction method thereof
  • Seawater desalination and chemical resource comprehensive extraction device and extraction method thereof
  • Seawater desalination and chemical resource comprehensive extraction device and extraction method thereof

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Embodiment Construction

[0032] The purpose of the present invention is to overcome the defects in the prior art, and to design a device and method for comprehensive extraction of seawater desalination and chemical resources.

[0033] like figure 1As shown, the extraction device of the present invention includes the following components connected in sequence: raw water sand filter tank 101, when the raw water passes through the sand filter tank 101, the raw water is pretreated; the first-stage membrane evaporation concentration device 102 is used to concentrate and treat the raw water; The first-stage pipeline mixer 103 is used to mix the concentrated water and alkaline water through the first-stage membrane evaporation concentration device 102; the first-stage membrane chemical reactor 104 is used to extract the chemical component magnesium hydroxide in the concentrated water; the second stage Secondary pipeline mixer 105 is used to mix filtrate and alkaline solution; Secondary membrane chemical reac...

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Abstract

The invention provides a seawater desalination and chemical resource comprehensive extraction device and an extraction method thereof. The seawater desalination and chemical resource comprehensive extraction device comprises a raw water sand filtering tank, a primary membrane evaporation and concentration device used for concentrating raw water, a primary pipe mixer used for mixing concentrated water treated by the primary membrane evaporation and concentration device with alkali water, a primary membrane chemical reactor used for extracting chemical components in the concentrated water, a secondary pipe mixer used for mixing filter cogging liquid with alkali liquor, a secondary membrane chemical reactor used for separating calcium carbonate in water, a secondary membrane evaporation and concentration device used for secondary membrane evaporation, and a third pipe mixer used for mixing the concentrated water with chloric acid. The invention is used for extracting chemical products of potassium, bromine and magnesium in an optimizing process while performing the seawater desalination, realizes the industrial salt manufacturing, reduces the chemical medicine consumption, realizes the comprehensive utilization of seawater chemical resources, and achieves the purpose of reducing the emission.

Description

technical field [0001] The invention relates to a seawater desalination and chemical resource comprehensive extraction device and method. Background technique [0002] Aiming at the current severe shortage of fresh water resources, people are increasingly seeking to use seawater as a source of fresh water. Currently, the practical seawater desalination methods mainly include multi-stage flash (MSF), multi-effect evaporation (ME) and reverse osmosis (RO). MSF and ME are operated under high temperature and high pressure, which requires high energy consumption. Reverse osmosis also needs to be operated under high pressure, and has high requirements for raw water pretreatment, resulting in high operating costs. [0003] Using multi-stage flash (MSF), multi-effect evaporation (ME) and reverse osmosis (RO) for seawater desalination, the general freshwater yield is about 50%, and about 50% of concentrated seawater needs to be discharged. With the enhancement of people's awareness...

Claims

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Application Information

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IPC IPC(8): C02F9/04C01B7/09C01D3/06C01F11/18C02F1/08C02F103/08
CPCY02A20/124Y02W10/37
Inventor 吕晓龙陈华艳
Owner TIANJIN POLYTECHNIC UNIV
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