Device and method for preparing monodisperse ion exchange resin

An ion exchange resin, monodisperse technology, applied in the field of preparation of exchange resins, can solve the problems of large diameter oil droplets, small interfacial tension, and the lack of monodispersity of beads, and achieve the effect of uniform particle size.

Active Publication Date: 2014-12-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this method prepares beads with a particle size greater than 1.0mm, due to the large diameter of the large particle oil droplet and the small interfacial tension with the water phase, it is easily broken when the water flow is slightly unstable or when the droplets collide, which directly leads to the preparation The beads cannot meet the requirements of monodispersity, and the particle size will be too small
Therefore this method cannot be used
[0011] At present, there is no report about the equipment and preparation method of ion exchange resin with large particle size (diameter> 1.0mm)

Method used

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  • Device and method for preparing monodisperse ion exchange resin
  • Device and method for preparing monodisperse ion exchange resin
  • Device and method for preparing monodisperse ion exchange resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The method for preparing monodisperse ion exchange resin, comprises the steps:

[0050] (1) The equipment for preparing monodisperse ion exchange resin is used; wherein the upper porous plate is made of glass with a pore diameter of 0.3 mm to 0.8 mm. The material of the lower perforated plate is glass, and the aperture is 0.3mm~0.8mm;

[0051] (2) the mass percent of methyl acrylate 90g (polymerization monomer) that has removed polymerization inhibitor, removed polymerization inhibitor is 55% divinylbenzene 10g (crosslinking agent), benzoyl peroxide 2g (initiator agent) is mixed evenly and then added to the raw material tank 1, and the temperature of the raw material tank 1 is controlled to be 20-30° C. to obtain the reactant;

[0052] (3) dissolving polyvinyl alcohol (dispersant) in deionized water so that the mass concentration of polyvinyl alcohol is 3%, stirring and dissolving to obtain an aqueous phase;

[0053] (4) Water phase is charged in the pipeline between ...

Embodiment 2

[0073] The method for preparing monodisperse ion exchange resin, comprises the steps:

[0074] (1) Use equipment for preparing monodisperse ion exchange resin; wherein the material of the upper porous plate is stainless steel, and the pore diameter is 0.3 mm to 0.8 mm. The material of the lower perforated plate is stainless steel, and the hole diameter is 0.3mm~0.8mm;

[0075] (2) the mass percentage of the methyl acrylate 15g and methyl methacrylate 15g (polymerization monomer) that has removed polymerization inhibitor, removed polymerization inhibitor is 80g (cross-linking agent) of the mass percent of 55% dipropylene benzene, coupler 1.1 g of nitrogen bis(isobutyronitrile) (initiator) and 50 g of liquid paraffin (porogen) are uniformly mixed and then added to the raw material tank 1, and the temperature of the raw material tank 1 is controlled to be 20-30° C. to obtain the reactant;

[0076] (3) dissolving sodium lauryl sulfate (dispersant) in deionized water so that the m...

Embodiment 3

[0091] The method for preparing monodisperse ion exchange resin, comprises the steps:

[0092] (1) The equipment for preparing monodisperse ion exchange resin is used; wherein the material of the upper porous plate is ceramics, and the pore diameter is 0.3 mm to 0.8 mm. The material of the lower perforated plate is ceramics, and the aperture is 0.3mm-0.8mm;

[0093] (2) the styrene 30g (polymerization monomer) that has removed polymerization inhibitor, the mass percentage that has removed polymerization inhibitor is 55% divinylbenzene 10g (crosslinking agent), cumene hydroperoxide 0.5g ( Initiator), a mixture of toluene and hexane (the mass ratio of toluene to hexane is 3:7) 59.5g (porogen) is mixed evenly and then added to the raw material tank 1, and the temperature of the raw material tank 1 is controlled at 20-30°C to obtain the reaction thing;

[0094] (3) Dissolve the mixture of polyvinyl alcohol and sodium dodecylbenzene sulfonate (the mass ratio of polyvinyl alcohol ...

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Abstract

The invention discloses a device and method for preparing a monodisperse ion exchange resin. The device comprises a raw material tank (1), a vibration generator (2), a sprayer (3), a polymerizer (5), a stirring polymerization kettle (8), a transfer pump (9), and pipelines, valves and T joints connected among device rooms, wherein the inside of the lower part of the polymerizer (5) is provided with a feed pipe (4); the diameter of the lower part of the polymerizer (5) is greater than that of the upper part; the internal surface of the middle upper part of the polymerizer (5) is connected with an upper porous plate (6); the internal surface of the lower part of the polymerizer (5) is connected with a lower porous plate (7); and the feed pipe (4) penetrates through the lower porous plate (7). The device and method can be used for preparing the gel-type or macroporous ion exchange resin with the particle size of 1-3.5mm; and the prepared ion exchange resin has uniform particle size and monodispersity.

Description

technical field [0001] The invention belongs to the production field of ion exchange resins, and in particular relates to equipment and methods for preparing exchange resins. technical background [0002] Ion exchange resin is a functional resin, which is widely used in industrial production and scientific research fields such as industrial water treatment, petrochemical industry, electric power, metallurgy, biomedicine and food, and its application field is still expanding. [0003] Monodisperse ion exchange resins with uniform particle size have advantages that ordinary resins do not have, such as high exchange capacity, high strength, long service life, and strong selectivity. The preparation of monodisperse ion exchange resins has always been a research hotspot. At present, the main method of preparing ion exchange resin is the suspension polymerization method, which is to mix styrene, divinylbenzene, initiator and porogen evenly into the oil phase, and then add it to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/01C08F212/08C08F220/14C08F212/36C08F212/34C08F2/20
Inventor 范江洋陈松韩毅刘凯文王烨
Owner TIANJIN UNIV
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