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Coarse brine for electrolysis impurity removal treatment device and treatment method thereof

A treatment device and brine technology, which are applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high content, poor brine quality, and high production costs, and improve brine quality. The effect of quality, lower production cost and longer service life

Active Publication Date: 2016-04-13
XINJIANG ZHONGTAI CHEM FUKANG ENERGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a coarse brine for electrolysis and its treatment method, which overcomes the deficiencies of the prior art and can effectively solve the problem of Ca in the brine at the outlet of the Kaymembrane filter in the existing two-alkali method. 2+ , Mg 2+ High content, poor brine quality, resulting in high production costs

Method used

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  • Coarse brine for electrolysis impurity removal treatment device and treatment method thereof
  • Coarse brine for electrolysis impurity removal treatment device and treatment method thereof
  • Coarse brine for electrolysis impurity removal treatment device and treatment method thereof

Examples

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Effect test

Embodiment 1

[0026] Embodiment 1, as attached figure 1 As shown, the coarse brine impurity removal treatment device for electrolysis includes a crude brine baffle tank 1, a crude brine tank 2, a pressurized container tank 3, a preprocessor 4, a reaction tank 5, a brine buffer tank 6, and a membrane filter 7 , refined brine deflection tank 8 and refined brine tank 9; a saturated coarse brine pipeline 10 is fixedly connected to the liquid inlet end of the crude brine deflection tank 1, and a corresponding pipe is fixedly installed above the coarse brine deflection tank 1 through a bracket respectively The corresponding alkali pipeline 11 and the secondary sodium pipeline 12, the liquid outlet end of the crude brine baffle tank 1 and the liquid inlet end of the crude brine tank 2 are fixedly connected together through the first pipeline 13, and the liquid outlet end of the crude brine tank 2 and the feeder The liquid inlet end of the pressure vessel tank 3 is fixedly connected together throug...

Embodiment 2

[0032] Embodiment 2, as attached figure 1 As shown, the treatment method using the electrolytic crude brine impurity removal treatment device is carried out according to the following steps: first step, the saturated crude brine with a temperature of 55°C to 65°C is passed through the saturated crude brine pipeline 10 into the crude brine for deflection In the tank 1, an aqueous sodium hydroxide solution is added to the crude brine deflection tank 1 through the alkali pipeline 11, and an aqueous sodium hypochlorite solution is added to the crude brine deflection tank 1 through the hyposodium pipeline 12, and the saturated crude brine and the aqueous sodium hydroxide solution and the aqueous sodium hypochlorite solution are added. After reacting in the crude brine baffle tank 1, enter the crude brine tank 2 through the first pipeline 13, the addition of the aqueous sodium hydroxide solution makes the excess alkalinity of sodium hydroxide in the crude brine of the crude brine tan...

Embodiment 3

[0033] Embodiment 3, as attached figure 1 As shown, the treatment method using the electrolytic crude brine impurity removal treatment device is carried out according to the following steps: first step, the saturated crude brine with a temperature of 50°C or 65°C is passed through the saturated crude brine pipeline 10 into the crude brine for deflection In the tank 1, an aqueous sodium hydroxide solution is added to the crude brine deflection tank 1 through the alkali pipeline 11, and an aqueous sodium hypochlorite solution is added to the crude brine deflection tank 1 through the hyposodium pipeline 12, and the saturated crude brine and the aqueous sodium hydroxide solution and the aqueous sodium hypochlorite solution are added. After reacting in the crude brine baffle tank 1, enter the crude brine tank 2 through the first pipeline 13, the addition of the aqueous sodium hydroxide solution makes the excess alkalinity of sodium hydroxide in the crude brine of the crude brine tan...

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Abstract

The invention relates to the technical field of devices for carrying out impurity removal treatment on crude brine and provides a device for carrying out impurity removal treatment on crude brine for electrolysis and a treatment method using the same. The device comprises a crude brine baffling tank, a crude brine tank, a pressurizing vessel tank, a pretreater, a reaction tank, a brine buffer tank, a HVMTM filter, a refined brine baffling tank and a refined brine tank. The device and the treatment method have the beneficial effects that plenty of calcium and magnesium ions in the crude brine are firstly removed with sodium carbonate, and then the calcium and magnesium ions in the crude brine are further removed with phosphoric acid by utilizing the principle that the Ksp of calcium phosphate is smaller than that of calcium carbonate; the total content of the calcium and magnesium ions in the crude brine coming out of the HVMTM filter is reduced by a larger margin than that of the calcium and magnesium ions in the crude brine coming out of the HVMTM filter in the prior art, thus improving the brine quality, reducing the adsorption load of a chelate resin tower in the subsequent procedure and then lengthening the regeneration period of the chelate resin tower, reducing the regeneration frequency of the chelate resin tower, reducing the discharges of regenerated acid, alkali, pure water and sewage, prolonging the service life of an ionic membrane and then reducing the production cost.

Description

technical field [0001] The invention relates to the technical field of impurity removal treatment devices for coarse brine, and relates to a coarse brine removal treatment device for electrolysis and a treatment method thereof. Background technique [0002] At present, colleagues in the chlor-alkali industry at home and abroad are studying to reduce Ca in brine used in chlor-alkali production. 2+ , Mg 2+ content method. Because in order to make the chlor-alkali industry develop rapidly to meet the needs of the development of the market economy and meet the requirements for the use of existing raw materials, it is necessary to improve product quality and stability through technological transformation and optimization. The quality of brine is the key to the high yield and high quality of chlor-alkali electrolysis to achieve the best economic benefits, and the quality of brine depends on whether Ca can be controlled 2+ , Mg 2+ For many years, my country's chlor-alkali indus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
Inventor 宋伟李永全宫正唐湘军冯文军戚瑞松侯亚楠俞刚山赵强宁黄小虎董建刚车玉宝
Owner XINJIANG ZHONGTAI CHEM FUKANG ENERGY CO LTD
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