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Preparation method of ion exchange resin for removing thermostable salt in alcohol amine solution

An ion exchange resin, alcohol amine solution technology, applied in cation exchange materials and other directions, can solve the problems of limited resin exchange capacity, large material consumption, waste and other problems, and achieve the effect of easy elution and regeneration, and small volume.

Active Publication Date: 2015-06-24
HANGZHOU DUONENG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem of existing conventional ion exchange resins with large resin particles and large resin loading equipment, so that the resin exchange capacity per unit volume is limited, and in the process of resin regeneration and cleaning, the material consumption is large, resulting in waste. To provide a method for preparing an ion-exchange resin with finer particles and larger specific surface area for removing heat-stable salts in alcohol amine solutions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method for removing thermally stable salt in an alcohol amine solution using an ion exchange resin, the preparation method comprising the following steps:

[0030] a) Polymerization reaction

[0031] Add 5% sodium chloride, 2% polyethylene glycol, and deionized water into the polymerization kettle, add the mixed solution of styrene and divinylbenzene into the polymerization kettle, the cross-linking degree is 8%, and slowly start stirring, Stirring speed 200r / min, and observe, when oil tank is dispersed into small liquid droplet, just begin to be heated to 55 ℃ of insulation 8h, then continue to be warming up to 80 ℃, insulation 12h again. After the polymerization reaction, cool to room temperature, filter, wash with methanol, ethanol, and deionized water in sequence, and dry in vacuum to obtain polystyrene white balls; wherein, adding sodium chloride, dispersant, and deionized water are respectively styrene and di 1%, 0.5%, 15% of the total mass of vinyl...

Embodiment 2

[0037] A preparation method for removing thermally stable salt in an alcohol amine solution using an ion exchange resin, the preparation method comprising the following steps:

[0038] a) Polymerization reaction

[0039] Add 5% sodium chloride, 2% polyethylene glycol, and deionized water into the polymerization kettle, add the mixed solution of styrene and divinylbenzene into the polymerization kettle, the degree of crosslinking is 4%, and slowly start stirring, Stirring speed 300r / min, and observe, when oil tank is dispersed into small liquid droplet, just begin to be heated to 60 ℃ of insulation 8h, then continue to be warming up to 90 ℃, insulation 12h again. After the polymerization reaction, cool to room temperature, filter, wash with methanol, ethanol, and deionized water in sequence, and dry in vacuum to obtain polystyrene white balls; wherein, adding sodium chloride, dispersant, and deionized water are respectively styrene and di 2%, 1%, 18% of the total mass of vinyl...

Embodiment 3

[0045] A preparation method for removing thermally stable salt in an alcohol amine solution using an ion exchange resin, the preparation method comprising the following steps:

[0046] a) Polymerization reaction

[0047] Add 5% sodium chloride, 2% polyethylene glycol, and deionized water into the polymerization kettle, add the mixed solution of styrene and divinylbenzene into the polymerization kettle, the cross-linking degree is 8%, and slowly start stirring, Stirring speed 400r / min, and observe, when oil tank is dispersed into small liquid droplet, just begin to be heated to 75 ℃ of insulation 8h, then continue to be warming up to 100 ℃, insulation 12h again. After the polymerization reaction, cool to room temperature, filter, wash with methanol, ethanol, and deionized water in sequence, and dry in vacuum to obtain polystyrene white balls; wherein, adding sodium chloride, dispersant, and deionized water are respectively styrene and di 3%, 2%, 20% of the total mass of vinylb...

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Abstract

The invention provides a preparation method of ion exchange resin for removing thermostable salt in an alcohol amine solution. The preparation method comprises the steps that styrene, divinyl benzene, deionized water, a disperse system and an auxiliary agent are added to a polymerization kettle, and react at certain polymerization temperature; the time and speed are controlled; fine particle polystyrene white balls (particle size of 0.1-0.3mm) are obtained, cleaned, dried, and then subjected to chloromethylation; chloromethylation polystyrene resin is obtained and reacts with trimethylamine; and qualified fine particle resin is obtained. The ion exchange resin prepared by the method is small in particle size and high in specific surface area; the strong base exchange capacity is 2.9-4.7meq / g (dry agent); the efficiency of removing thermostable salt in the alcohol amine solution is improved significantly; and the elution and regeneration of the resin are easy to conduct.

Description

technical field [0001] The invention relates to a method for producing an ion-exchange resin, in particular to a method for preparing an ion-exchange resin with finer particles and larger specific surface area for removing heat-stable salts in an alcohol amine solution. Background technique [0002] Anion exchange resins can be divided into strongly basic anion exchange resins and weakly basic anion exchange resins according to the nature of the exchange groups. Anion exchange resins have high strength, superior performance, and a wide range of uses, and can be used in biochemical separation, sewage treatment, phase transfer catalytic reagents, and other fields. [0003] In the natural gas and oil refining industries, alcohol amine solutions are often used to remove hydrogen sulfide and carbon dioxide in gas streams. Domestic natural gas and refineries generally use alcohol amine solutions for purification treatment. Ionic amine salts are produced during the recycling of alc...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08F8/24C08F8/32C08J9/28B01J39/20
Inventor 吴永琴杨国庆张萍
Owner HANGZHOU DUONENG ENVIRONMENTAL PROTECTION TECH
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