A method and system for removing organic impurities in salt-making brine

An organic impurity and brine technology, applied in the field of salt chemical industry, can solve the problems of poor oxidation activity and oxidation ability, difficult to realize continuous production, etc., achieve good impurity removal effect, improve oxidation activity and oxidation ability, and improve the effect of mixing degree

Inactive Publication Date: 2018-01-19
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for removing organic impurities in salt-making brine, so as to solve the problem in the prior art that the conventional oxidation decomposition system has poor oxidation activity and oxidation ability for low-concentration organic substances in salt-making brine, and it is difficult to realize continuous production. question

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  • A method and system for removing organic impurities in salt-making brine
  • A method and system for removing organic impurities in salt-making brine
  • A method and system for removing organic impurities in salt-making brine

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Embodiment 1

[0051] The system for removing organic impurities in salt-making brine of this embodiment, such as figure 1 As shown, it is formed in series by the first-stage reactor 2 and the second-stage reactor 5, and the discharge port 4 of the first-stage reactor is respectively connected with the feed port 3 of the current-stage reactor and the inlet of the second-stage reactor. The feed port 6 is connected to allow a part of the discharge to circulate into the primary reactor, and the other part enters the second-stage reactor; the discharge port 7 of the second-stage reactor is separated from the feed port 6 of the primary reactor. In addition to the phase connection, a discharge pipe is also connected to discharge the material out of the reaction system; the reactors at all levels are provided with feeding ports 15 for adding oxidants and catalysts, and the reactors at all levels are provided with ultraviolet lamps 14 .

[0052] When the system is in operation, the brine for salt pr...

Embodiment 2

[0054] The system for removing organic impurities in salt-making brine of this embodiment, such as figure 2 As shown, it is formed in series by the first-stage reactor 2, the second-stage reactor 5 and the third-stage reactor 8, and the discharge port 4 of the first-stage reactor is connected with the feed port 3 and the The feed port 6 of the second-stage reactor is connected, and a part of the discharge is used to circulate into the current-stage reactor, and the other part enters the second-stage reactor; the discharge port 7 of the second-stage reactor is connected to the current stage respectively. The feed port 6 of the reactor is connected with the feed port 9 of the third-stage reactor; the discharge port 10 of the third-stage reactor is connected with the feed port 9 of the current reactor, and is also connected with a row The feed pipe, the discharge pipe is connected with the inlet of the filter 16 and is used to discharge the material out of the reaction system af...

Embodiment 3

[0057] The system for removing organic impurities in salt-making brine of this embodiment, such as image 3 As shown, it is formed in series by the first-stage reactor 2, the second-stage reactor 5, the third-stage reactor 8 and the fourth-stage reactor 11, and the outlet 4 of the first-stage reactor reacts with this stage respectively. The feed port 3 of the reactor is connected with the feed port 6 of the second-stage reactor, and is used to make a part of the output circulate into the current-stage reactor, and another part enters the second-stage reactor; the outlet of the second-stage reactor Feed port 7 is connected with the feed port 6 of this stage reactor and the feed port 9 of the third stage reactor respectively; The feed port 10 of the third stage reactor is respectively connected with the feed port 9 and The feed port 12 of the fourth-stage reactor is connected; the discharge port 13 of the fourth-stage reactor is connected with the feed port 12 of the current rea...

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Abstract

The invention discloses a method and system for removing organic impurities from salt manufacturing brine. The method comprises the following steps: regulating the pH value of the salt manufacturing brine to be 1-6, then enabling the salt manufacturing brine after pH value regulation to enter a first-stage reactor of a reaction system formed by series connection of at least two stages of reactors, wherein discharged materials of each stage of reactor are divided into cycle materials and net discharged materials, enabling the cycle materials of all stages of reactors except the last-stage reactor to return and enter the corresponding-stage reactor, and enabling the net discharged materials to enter the next-stage reactor; and adding an oxidizer and a catalyst to all stages of reactors, performing a reaction under UV irradiation, finally enabling the cycle materials of the last-stage reactor to return and enter the corresponding-stage reactor, regulating the pH value of the net discharged materials of the last-stage reactor to be neutral, and performing filtration so as to obtain purified brine. Through the adoption of the method, the application of a Fenton reagent in the purification field of low-concentration organic aqueous solutions is realized, the technical problem that a Fenton reaction can only be in intermittent production is solved, and the method has the characteristics of being good in impurity removal effect, large in treatment capacity, safe and environment-friendly, and realizing continuous production.

Description

technical field [0001] The invention belongs to the technical field of salt chemical industry, and in particular relates to a method and system for removing organic impurities in salt-making brine. Background technique [0002] The underground salt layer contains a certain amount of humic acid, and during the salt mining process, the phytic acid will be pumped out of the ground together with the brine and enter the salt system. Humic acid is a natural organic mixture mainly composed of hydroxyaromatic carboxylic acids and mixed with small molecular carboxylic acids, and its composition is relatively complex. Part of the organic matter has an irritating and unpleasant odor similar to gasoline, spoiled substances, smelly socks, etc. Although the content of humic acid in brine is relatively low, such substances are continuously enriched in the mother liquor during the vacuum salt making process, which makes the after-effect evaporator emit a relatively strong odor. The above-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C01D3/14
CPCC01D3/14
Inventor 李翔李安泰任海波池吉安徐辉冯巧李辉夏学莲张艳花
Owner HENAN UNIV OF URBAN CONSTR
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