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A kind of membrane antiscalant and preparation method thereof

A scale inhibitor, room temperature technology, applied in the field of membrane scale inhibitor and its production, can solve the problems of increasing water supply pressure and cleaning frequency, affecting the normal operation of reverse osmosis device, decreasing water output or desalination rate, etc. The effect of less, stable nature and long storage period

Active Publication Date: 2016-05-11
山东森盛隆环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, concentrated water from reverse osmosis devices is highly susceptible to sediment contamination, such as the generation of CaCO on the membrane surface 3 , Ca 3 (PO4)2, CaSO 4 , BaSO4, SrSO 4 , metal oxides, silicic acid compounds and other deposits, resulting in an increase in system water supply pressure and cleaning frequency, a decrease in water output or desalination rate, and even make the membrane element scrapped in advance; the pollution of reverse osmosis membrane can be divided into chemical pollution, biological pollution, colloid Pollution and particle pollution During the operation of the reverse osmosis system, due to chemical pollution, colloidal pollution and microbial pollution, the surface of the reverse osmosis membrane is easily scaled, which will directly affect the normal operation of the reverse osmosis device, and in severe cases, it will even make the reverse osmosis membrane scrapped

Method used

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  • A kind of membrane antiscalant and preparation method thereof
  • A kind of membrane antiscalant and preparation method thereof
  • A kind of membrane antiscalant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: 100 kilograms of film antiscalants, are made up of the component of following weight: 2-phospho-1,2, 42 kilograms of 4-tricarboxylic acid butanes, 15 kilograms of polyaspartic acid, polyacrylic acid 15 kilograms, 10 kilograms of hydrolyzed polymaleic anhydride, all the other are pure water; The preparation steps are as follows:

[0033] Step 1: Add 2-phospho-1,2,4-tricarboxylic butane to the normal pressure reactor, and stir at normal temperature for 7 minutes;

[0034] Step 2: Add polyaspartic acid to the solution obtained in step 1, and stir at room temperature for 10 minutes;

[0035] Step 3: Add polyacrylic acid to the solution obtained in step 2, and stir at room temperature for 10 minutes;

[0036] Step 4: Add hydrolyzed polymaleic anhydride to the solution obtained in step 3, and stir at room temperature for 5 minutes;

[0037] Step 5, add pure water to the solution obtained in step 4, and stir at room temperature for 20 minutes to obtain a membra...

Embodiment 2

[0049] Embodiment 2: 100 kilograms of membrane antiscalants, are made up of the component of following weight: 2-phospho-1,2,22 kilograms of 4-tricarboxylic acid butanes, 10 kilograms of polyaspartic acid, polyacrylic acid 10 kilograms, 5 kilograms of hydrolyzed polymaleic anhydride, all the other are pure water; The preparation steps are as follows:

[0050] Step 1: Add 2-phospho-1,2,4-tricarboxylic acid butane into the normal pressure reactor, and stir at normal temperature for 5-7 minutes;

[0051] Step 2: Add polyaspartic acid to the solution obtained in step 1, and stir at room temperature for 8 minutes;

[0052] Step 3: Add polyacrylic acid to the solution obtained in step 2, and stir for 7 minutes at room temperature;

[0053] Step 4: Add hydrolyzed polymaleic anhydride to the solution obtained in step 3, and stir at room temperature for 3 minutes;

[0054] Step 5, add pure water to the solution obtained in step 4, and stir at room temperature for 15 minutes to obtain...

Embodiment 3

[0066] Embodiment 3: 100 kilograms of film antiscalants, are made up of the component of following weight: 2-phospho-1,2, 32 kilograms of 4-tricarboxylic acid butanes, 12.5 kilograms of polyaspartic acid, polyacrylic acid 12.5 kilograms, 7.5 kilograms of hydrolyzed polymaleic anhydride, all the other are pure water; The preparation steps are as follows:

[0067] Step 1: Add 2-phospho-1,2,4-tricarboxylic acid butane into the normal pressure reactor, and stir at normal temperature for 5-7 minutes;

[0068] Step 2: Add polyaspartic acid to the solution obtained in step 1, and stir at room temperature for 9 minutes;

[0069] Step 3: Add polyacrylic acid to the solution obtained in step 2, and stir at room temperature for 8 minutes;

[0070] Step 4: Add hydrolyzed polymaleic anhydride to the solution obtained in step 3, and stir at room temperature for 4 minutes;

[0071] Step 5, add pure water to the solution obtained in step 4, and stir at room temperature for 17 minutes to obt...

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Abstract

The invention relates to a film scale inhibitor and a preparation method thereof. The film scale inhibitor comprises components in percentage by weight as follows: 22%-42% of 2-phosphomobutane-1, 2, 4-tricarboxylic acid, 10%-15% of polyaspartic acid, 10%-15% of polyacrylic acid, 5%-10% of hydrolyzed polymaleic anhydride and the balance of purified water, and the sum of the components is 100%. According to the preparation method, 2- phosphomobutane-1, 2, 4- tricarboxylic acid, polyaspartic acid, polyacrylic acid, hydrolyzed polymaleic anhydride and purified water are sequentially added into the reaction kettle with normal pressure and temperature and are stirred. The film scale inhibitor and the preparation method have the benefits as follows: the scale inhibitor has better stability on calcium ion concentration, basicity, metal ions of iron, manganese and the like, and formation of scales such as CaCO3, CaSO1, BaSO1, SrSO1, CaF2 and the like can be effectively controlled; and 2), the price is cheap, the scale inhibiting efficiency is high, the adding quantity is small, environmental protection is realized, the property is stable, and the storage period is long.

Description

technical field [0001] The invention relates to a membrane scale inhibitor and a preparation method thereof. Background technique [0002] Reverse osmosis technology has developed rapidly in our country and has been widely used in industrial fields such as pharmaceutical production, high-purity water in the electronics industry, drinking water, and chemical production. After reverse osmosis treatment, 99% of the salt and silicon dioxide in the water can be removed, and 99.5% of the calcium and magnesium in the water can be removed. However, concentrated water from reverse osmosis units is highly susceptible to sediment contamination, such as the generation of CaCO on the membrane surface 3 , Ca 3 (PO4)2, CaSO 4 , BaSO4, SrSO 4 , metal oxides, silicic acid compounds and other deposits, resulting in an increase in system water supply pressure and cleaning frequency, a decrease in water output or desalination rate, and even make the membrane element scrapped in advance; the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/08C02F1/44
Inventor 李斌
Owner 山东森盛隆环保科技有限公司
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