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High temperature resistance anion exchange resin preparation method

An exchange resin and anion technology, applied in anion exchange, ion exchange, chemical instruments and methods, etc., can solve the problems of high cost and complex synthesis route, achieve excellent temperature resistance, huge application value, and reduce air cooling heat loss Effect

Inactive Publication Date: 2018-06-15
JIANGSU SUQING WATER TREATMENT ENG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the heat-resistant resins are realized by selecting heat-resistant resin exchange groups, the synthetic route is complex and the cost is high

Method used

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  • High temperature resistance anion exchange resin preparation method

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preparation example Construction

[0024] A kind of preparation method of high temperature resistant anion exchange resin of the embodiment of the present invention comprises:

[0025] Step 10) Mix the hydroxyethyl cellulose, sodium chloride and deionized water, heat and stir until clear and transparent to obtain an aqueous phase reaction solution.

[0026] Wherein, in step 10), preferably, the mass ratio of hydroxyethyl cellulose, sodium chloride and deionized water is 1:(2-10):(480-500). Preferably, it is heated to a temperature of 60-65°C. In this temperature range, hydroxyethyl cellulose dissolves.

[0027] Step 20) Mix the initiator, porogen and polymerized monomer, and stir to obtain an oil phase reaction liquid.

[0028] Wherein, in step 20), preferably, the mass ratio of the initiator, the porogen and the polymerizable monomer is 1:(120-160):(150-500). Preferably, the initiator is one or any combination of benzoyl peroxide, ammonium persulfate, and azobisisobutyronitrile. The porogen is one or any c...

Embodiment 1

[0044] Mix 2 g of hydroxyethyl cellulose, 10 g of sodium chloride and 1000 g of deionized water, heat to 65° C., and stir until clear and transparent to obtain an aqueous phase reaction liquid. 1 g of benzoyl peroxide, 120 g of n-hexane, 205 g of styrene and 3 g of divinylbenzene were mixed and then stirred to obtain an oil phase reaction liquid. The oil phase reaction liquid and the water phase reaction liquid are mixed, and the mass ratio of the oil phase reaction liquid and the water phase reaction liquid is 1:2.3. Stir and heat up to 70°C for 2 hours, stop heating, add 8 g of divinylbenzene after cooling to 50°C, stir for 10 hours, heat up to 70°C for 2 hours, then heat up to 80°C for 3 hours, and finally heat up to 90°C for 6 hours, toluene Extract to remove the porogen, dry and sieve to obtain resin white balls. Mix resin white balls with chloromethyl ether, and the volume ratio of resin white balls to chloromethyl ether is 1:4, then add 2.02g SbCl 5 As a catalyst, sti...

Embodiment 2

[0046] Mix 1 g of hydroxyethyl cellulose, 10 g of sodium chloride and 480 g of deionized water, heat to 60° C., and stir until clear and transparent to obtain a water phase reaction liquid. 0.5 g of azobisisobutyronitrile, 80 g of liquid paraffin oil, 247.5 g of styrene and 2.5 g of divinylbenzene were mixed and stirred to obtain an oil phase reaction liquid. The oil phase reaction liquid and the water phase reaction liquid are mixed, and the mass ratio of the oil phase reaction liquid and the water phase reaction liquid is 1:2.4. Stir and heat up to 75°C for 1 hour, stop heating, add 7.5 g of divinylbenzene after cooling to 55°C, stir for 12 hours, heat up to 75°C for 1 hour, then heat up to 85°C for 4 hours, and finally heat up to 95°C for 5 hours. Extract with toluene to remove the porogen, dry and sieve to obtain resin white balls. Mix resin white balls with chloromethyl ether, and the volume ratio of resin white balls to chloromethyl ether is 1:5, then add 2.5g SbCl 5 ,...

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Abstract

The invention discloses a high temperature resistance anion exchange resin preparation method which comprises the step 10) of mixing hydroxyethyl cellulose, sodium chloride and deionized water, heating and stirring to be transparent to obtain water-phase reaction liquid; the step 20) mixing an initiator, a pore foaming agent and polymerization monomer and stirring to obtain oil-phase reaction liquid; the step 30) of mixing the water-phase reaction liquid with the oil-phase reaction liquid, stirring and warming to 70 to 75 DEG C and stopping heating after reaction; cooling to 50 to 55 DEG C, adding divinyl benzene, stirring, warming to 70 to 75 DEG C to react, warming to 80 to 85 DEG C to react and finally warming to 90 to 95 DEG C to react; utilizing methylbenzene to remove the pore foaming agent and drying and sieving to obtain resin white balls; the step 40) of mixing the resin white balls with chloromethyl ether, stirring and reacting, filtering to obtain chloromethylation resin andperforming amination treatment to obtain anion exchange resin. The method can be used for preparing anion exchange resin with good temperature resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to a preparation method of high temperature resistant anion exchange resin. Background technique [0002] The condensate of the direct air-cooled unit is characterized by high iron and silicon content during the start-up of the new machine, carbon dioxide pollution after normal operation, and the oxygen content is generally higher than that of the wet-cooled unit. In high temperature seasons, the condensed water temperature exceeds the possible tolerance range of ion exchange resins, especially anion exchange resins. When the condensed water temperature exceeds the ambient temperature by about 40°C, the chemical structure of the polystyrene strong base anion exchange resin functional group will decompose or fall off, resulting in a decrease in exchange capacity and the generation of organic pollutants, which greatly shortens the The service life of the resin i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/30C08F8/20C08F251/02C08F212/36C08F212/08B01J41/14C08J9/28C08L51/02
Inventor 钱平程晓辉张玉格胡澄王章忠杭祖圣卜小海
Owner JIANGSU SUQING WATER TREATMENT ENG GROUP
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