System and method for manufacturing demineralized water

A production system, salt water technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the problem that TOC content is not guaranteed, TOC removal is not considered, and it cannot meet the requirements of generator sets and other problems to achieve the effect of reducing the pollution index

Inactive Publication Date: 2014-01-08
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The above two widely used desalination processes do not consider the removal of TOC in incoming water
In the second process, even if a reverse osmosis device (RO) is installed, its main function is to pre-desalt, remove cation and anion impurities i

Method used

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  • System and method for manufacturing demineralized water

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Embodiment 1

[0027] Embodiment 1 of the present invention: such as figure 1 As shown, a desalinated water production system includes an industrial water inlet 1, a pretreatment device 2, a cation exchanger 3, a decarbonizer 4, an anion exchanger 5, a first-stage mixed bed 6, and a decarbonization device, which are sequentially connected together by pipelines. The connecting pipeline between the brine tank 7 and the desalinated water outlet 8, the anion exchanger 5 and the first-stage mixed bed 6 is sequentially provided with a security filter 9, a high-pressure pump 10 and a reverse osmosis device 11; the first-stage mixed bed 6 and the desalinated water The connecting pipeline between the outlets 8 is provided with a polishing mixed bed 12.

[0028] The pretreatment device 2 adopts ultrafiltration equipment, and an ultrafiltration water tank and a filtration water pump are also provided between the ultrafiltration equipment and the cation exchanger 3. The pretreatment device 2 adopts a mult...

Embodiment 2

[0032] Embodiment 2 of the present invention: such as figure 1 As shown, a desalinated water production system includes an industrial water inlet 1, a pretreatment device 2, a cation exchanger 3, a decarbonizer 4, an anion exchanger 5, a first-stage mixed bed 6, and a decarbonization device, which are sequentially connected together by pipelines. The connecting pipeline between the brine tank 7 and the desalinated water outlet 8, the anion exchanger 5 and the first-stage mixed bed 6 is sequentially provided with a security filter 9, a high-pressure pump 10 and a reverse osmosis device 11; the first-stage mixed bed 6 and the desalinated water The connecting pipeline between the outlets 8 is provided with a polishing mixed bed 12.

[0033] The pretreatment device 2 adopts ultrafiltration equipment, and an ultrafiltration water tank and a filtration water pump are also provided between the ultrafiltration equipment and the cation exchanger 3. The pretreatment device 2 uses an activ...

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Abstract

The invention discloses a system and a method for manufacturing demineralized water. The system comprises an industrial water inlet, a pretreatment device, a cation exchanger, a carbon remover, an anion exchanger, a primary mixed bed, a demineralized water tank and a demineralized water outlet which are sequentially connected with one another by pipelines; a primary demineralized water tank, a reverse osmosis water feeding pump, a cartridge filter, a high-pressure pump, a reverse osmosis device, a reverse osmosis water manufacturing tank and a fresh water pump are sequentially arranged on the connecting pipeline between the anion exchanger and the primary mixed bed; a polishing mixed bed is arranged on the connecting pipeline between the primary mixed bed and the demineralized water outlet. The system and the method have the advantages that suspension, colloid, organic matters and cation and anion impurities in water can be removed, and total organic carbon in the water further can be effectively removed, so that power generation sets can safely and stably run for a long time.

Description

Technical field [0001] The invention relates to a demineralized water production system and a demineralized water production method, and belongs to the field of industrial water treatment. Background technique [0002] According to research, if the TOC (total organic carbon) content in the water vapor of the thermal system of a power plant is too high, containing heteroatomic substances such as halogen, sulfur, and phosphorus, strong acid substances will be generated after decomposition, which will cause thermal equipment (such as steam turbine blades). ) Corrosion, thereby affecting the operating life of the equipment. [0003] In addition, the TOC in the water vapor will decompose to produce carbon dioxide and organic acids, causing the increase of steam conductivity, making the steam conductivity unable to accurately reflect the salt content in the water vapor, thereby affecting the supervision of steam quality. The actual operation shows that the hydrogen conductivity of boile...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/30
Inventor 周小琴沈建永王建华张中亮王正平侯芳李云林熊绘王晗
Owner CHINA HUADIAN ENG
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