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Concentration method of brine with medium-low salt-to-nitrate ratio under uncontaminated condition

A technology for purifying conditions and brine, which is applied in the field of medium and low salt-nitrate ratio brine concentration, which can solve the problems of long operation time, waste of energy, and cumbersome operation procedures

Inactive Publication Date: 2019-04-16
中盐枣阳盐化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for concentrating medium-low salt-nitrate brine without purification, which solves the problems of cumbersome operation procedures, waste of energy and long operation time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] S1. Obtain medium and low salt ratio brine, screen the medium and low salt ratio brine, use a screening machine to perform multiple screenings, screen out impurities in the middle and low salt ratio brine, and obtain medium and low salt ratio brine without impurities than brine;

[0026] S2. Obtain a weight of 75KG from the screened medium-low salt-nitrate brine, and pour it into a high-temperature evaporator, stir the brine, energize the high-temperature evaporator, and heat the brine in the high-temperature evaporator;

[0027] S3, add the lime water of 5KG in medium and low salt-nitrate ratio bittern, and stir the bittern after adding lime water, stirring time is 15 minutes, and the temperature of heating this moment is 10 °, makes the calcium hydroxide in lime water and Magnesium ions (Mg2) in the brine react to generate magnesium hydroxide precipitates. At this time, the magnesium ions (Mg2) in the brine are removed, and the excess calcium hydroxide (Ca(OH)2) will ...

Embodiment 2

[0033] S1. Obtain medium and low salt ratio brine, screen the medium and low salt ratio brine, use a screening machine to perform multiple screenings, screen out impurities in the middle and low salt ratio brine, and obtain medium and low salt ratio brine without impurities than brine;

[0034] S2. Obtain 85KG of the screened medium-low salt-nitrate brine, pour it into a high-temperature evaporator, stir the brine, energize the high-temperature evaporator, and heat the brine in the high-temperature evaporator;

[0035] S3, add the lime water of 10KG in medium and low salt-nitrate ratio bittern, and stir the bittern after adding lime water, stirring time is 20 minutes, and the temperature of heating this moment is 15 °, makes the calcium hydroxide in lime water and Magnesium ions (Mg2) in the brine react to generate magnesium hydroxide precipitates. At this time, the magnesium ions (Mg2) in the brine are removed, and the excess calcium hydroxide (Ca(OH)2) will reduce the sodium...

Embodiment 3

[0041] S1. Obtain medium and low salt ratio brine, screen the medium and low salt ratio brine, use a screening machine to perform multiple screenings, screen out impurities in the middle and low salt ratio brine, and obtain medium and low salt ratio brine without impurities than brine;

[0042] S2. Obtain 100KG of the screened medium-low salt-nitrate brine, and pour it into a high-temperature evaporator, stir the brine, energize the high-temperature evaporator, and heat the brine in the high-temperature evaporator;

[0043] S3, add the lime water of 15KG in medium and low salt-nitrate ratio bittern, and stir the bittern after adding lime water, stirring time is 30 minutes, and the temperature of heating this moment is 20 °, makes the calcium hydroxide in lime water and Magnesium ions (Mg2) in the brine react to generate magnesium hydroxide precipitates. At this time, the magnesium ions (Mg2) in the brine are removed, and the excess calcium hydroxide (Ca(OH)2) will reduce the s...

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Abstract

The invention discloses a concentration method of brine with the medium-low salt-to-nitrate ratio under an uncontaminated condition. The method includes the following steps that 1, the brine with themedium-low salt-to-nitrate ratio is obtained and screened several times by a screening machine to remove impurities in the brine with the medium-low salt-to-nitrate ratio, and the impurity-free brinewith the medium-low salt-to-nitrate ratio is obtained; 2, 75-100 kg of the screened brine with the medium-low salt-to-nitrate ratio is obtained and poured into a high-temperature evaporator, the brineis stirred, and the high-temperature evaporator is electrified to heat the brine in the high-temperature evaporator; 3, 5-15 KG of lime water is added into the brine with the medium-low salt-to-nitrate ratio, and the brine mixed with the lime water is stirred. The invention relates to the technical field of brine concentration. According to the concentration method of the brine with medium-low salt-to-nitrate ratio under the uncontaminated condition, by simplifying operation processes required by brine concentration, energy loss in the brine operation process is reduced, and concentration isperformed while purification is conducted.

Description

technical field [0001] The invention relates to the technical field of brine concentration, in particular to a method for concentrating medium-low salt-nitrate ratio brine without purification. Background technique [0002] Water with strong mineralization is often used to extract certain chemical raw materials, such as salt, iodine, boron, bromine, etc. The scientific name of brine is brine, which is a mixture of magnesium chloride, magnesium sulfate and sodium chloride. Tofu with brine is a colloidal polymer. In the process of sinking, no chemical reaction has occurred. Concentration is a unit operation in which part of the solvent is removed from the solution. It is a process in which the solute and the solvent are partially separated. During the concentration process, the water in the material reaches the surface of the liquid phase from the inside of the liquid phase by convection and diffusion. After removal, the final water mass fraction is about 30%, which is general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F1/04C02F1/5245C02F1/68C02F9/00
Inventor 姚立勇彭学光
Owner 中盐枣阳盐化有限公司
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