Scale inhibitor for salt manufacture and application thereof

A scale inhibitor and water-based technology, which is applied in the field of scale inhibitor and dispersant, can solve the problems of increased process energy consumption, shortened production cycle, reduced heat transfer rate, etc., and achieves improved scale inhibition rate, strong high temperature resistance, and safe operation Effect

Active Publication Date: 2012-02-15
CHANGZHOU ZHONGNAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the subsequent evaporation process, with the continuous evaporation and concentration of brine, the concentration of calcium and magnesium ions in the brine is also increasing, and scale deposits are easily formed in the evaporation tank and heating chamber, which directly leads to a decrease in heat transfer rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Salt antiscalant, by weight percentage, is made of 25% acrylic acid-methyl acrylate-propylene sulfonate sodium multipolymer, 45% polyaspartic acid, 15% sodium gluconate and 5% water have to;

[0025] Described acrylic acid-methyl acrylate-sodium propylene sulfonate multipolymer is in terms of mass ratio: acrylic acid: acrylate: sodium propylene sulfonate is 5: 1.2: 3, adopts the above-mentioned proportioning of acrylic acid, methyl acrylate, propylene Sodium sulfonate is polymerized under the condition that the reaction temperature is 89°C.

[0026] In the above-mentioned technical scheme, described polyaspartic acid is purchased out, but must satisfy following quality index when purchased out:

[0027] project

[0028] The above-mentioned sodium gluconate is outsourced, but the following quality indicators must be met when outsourced:

[0029] project:

[0030] The above-mentioned salt-making scale inhibitor is suitable for salt-nitrate co-produ...

Embodiment 2

[0032] Salt antiscalant, by weight percentage, is made of 28% acrylic acid-methyl acrylate-propylene sulfonate sodium multipolymer, 47% polyaspartic acid, 15% sodium gluconate and 10% water have to;

[0033] Described acrylic acid-methyl acrylate-sodium propylene sulfonate multipolymer is in terms of mass ratio: acrylic acid: acrylate: sodium propylene sulfonate is 5: 1.2: 3, adopts the above-mentioned proportioning of acrylic acid, methyl acrylate, propylene Sodium sulfonate is polymerized under the condition that the reaction temperature is 90°C.

[0034] In the above-mentioned technical scheme, described polyaspartic acid is purchased out, but must satisfy following quality index when purchased out:

[0035] project

[0036] The above-mentioned sodium gluconate is outsourced, but the following quality indicators must be met when outsourced:

[0037] project:

[0038] The above-mentioned salt-making scale inhibitor is suitable for salt-nitrate co-prod...

Embodiment 3

[0040] Salt scale inhibitor, by weight percentage, is made of 30% acrylic acid-methyl acrylate-sodium propylene sulfonate multi-polymer, 50% polyaspartic acid, 10% sodium gluconate and 10% water have to;

[0041] Described acrylic acid-methyl acrylate-sodium propylene sulfonate multipolymer is in terms of mass ratio: acrylic acid: acrylate: sodium propylene sulfonate is 5: 1.2: 3, adopts the above-mentioned proportioning of acrylic acid, methyl acrylate, propylene Sodium sulfonate is polymerized at a reaction temperature of 91°C.

[0042] In the above-mentioned technical scheme, described polyaspartic acid is purchased out, but must satisfy following quality index when purchased out:

[0043] project

[0044] The above-mentioned sodium gluconate is outsourced, but the following quality indicators must be met when outsourced:

[0045] project:

[0046] The above-mentioned salt-making scale inhibitor is suitable for salt-nitrate co-production industry, su...

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PUM

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Abstract

The invention discloses a scale inhibitor for salt manufacture, which is prepared from the following components in percentage by weight: 25 to 30 percent of crylic acid-acrylate-sodium allylsulfonate multiple copolymer, 40 to 50 percent of polyaspartic acid, 10 to 15 percent of sodium gluconate, and 5 to 10 percent of water. The scale inhibitor for salt manufacture, disclosed by the invention, issuitable for the salt and Glauber salt co-production industry, as well as sugar manufacture and monosodium glutamate manufacture industries, can prevent a heat exchange tube in a pre-heater and a heat chamber from scaling, and guarantees the scale inhibitor with heat transfer effect for salt manufacture.

Description

technical field [0001] The invention relates to the field of scale inhibitors and dispersants, in particular to a salt-making scale inhibitor and its application. Background technique [0002] The raw materials for making salt from brine mainly come from seawater and underground brine. Most of the salt making processes use brine purification to remove calcium and magnesium ions in the original brine, but it is impossible to completely remove them. Some calcium and magnesium ions still remain in the purified brine, and the purified brine is alkaline. In the subsequent evaporation process, with the continuous evaporation and concentration of brine, the concentration of calcium and magnesium ions in the brine is also increasing, and scale deposits are easily formed in the evaporation tank and heating chamber, which directly leads to a decrease in heat transfer rate and an increase in process energy consumption , The production cycle is shortened. In the prior art, the way of ...

Claims

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Application Information

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IPC IPC(8): C02F5/10C02F5/12
Inventor 孙金忠张洪明刘光华
Owner CHANGZHOU ZHONGNAN CHEM
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