Equipment and method for producing uniform particle ion exchange resin beads

An ion exchange resin and production equipment technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve problems such as harsh requirements of the material system, and achieve the effect of avoiding particle breakage, maintaining particle size uniformity and particle size uniformity.

Active Publication Date: 2011-06-08
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is only applicable to the oil phase system in which the oil droplets with a density smaller than the water phase are aggregated into polymer beads with a density higher than the water phase during the polymerization process, and the requirements for the system are relatively strict.
As for the macroporous ion exchange resin, since the density of its monomer and polymer beads is always smaller than that of the water phase, this method cannot be used for preparation.

Method used

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  • Equipment and method for producing uniform particle ion exchange resin beads
  • Equipment and method for producing uniform particle ion exchange resin beads
  • Equipment and method for producing uniform particle ion exchange resin beads

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Dosing ratio (mass composition): water phase: oil phase (monomer phase) = 5: 1; where:

[0047] 1. Aqueous phase deionized water: polyvinyl alcohol (dispersant): methylene blue = 100: 0.5: 0.05

[0048] 2. Oil phase (monomer phase) styrene (polymerized monomer): divinylbenzene (crosslinking agent): paraffin (porogen): benzoyl peroxide (initiator) = 100:15:70:1

[0049] Equipment conditions: vibration frequency: 200Hz; nozzle aperture: 0.2mm; number of nozzles: 10; nozzles are located on a concentric circle with the center of the nozzle panel as the center, arranged equidistantly; the height of the fluidized polymerization reactor is 1.5m, and the inner diameter of the upper end is 40mm. The diameter of the lower end is 80mm, the flow rate of the water phase is 70L / h; the flow rate of the oil phase monomer: 20mL / min;

[0050] Ingredients: prepare styrene and divinylbenzene monomer phases according to the proportion, add porogen liquid paraffin and initiator benzoyl pero...

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Abstract

The invention discloses equipment and a method for producing uniform particle ion exchange resin beads. The equipment comprises a head tank 1, an oil phase storage tank 2, a vibration generator system 4, a nozzle 6, a fluidized polymerization reactor 8, an aqueous phase liquid distributer 9, a maturation tank 10 and an aqueous phase circulating pump 11; and the ion exchange resin beads produced by the equipment have uniform particle size. When the method is used for producing the ion exchange resin bead products, the production capacity of the equipment can be adjusted by changing the number of orifices of the nozzle and the mass fraction of the target particle size of +/-0.05mm is more than 95 percent without sieving; and in the method, the aqueous phase can be recycled, so that the wastewater discharge is reduced; therefore, sewage discharge in the reaction process is greatly reduced.

Description

technical field [0001] The invention belongs to equipment and a production method for producing ion exchange resin polymer beads (white balls). 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, medicine and food, and its application field is still expanding. [0003] The particle size of ion exchange resin is determined by the particle size of its polymer beads (white balls). The existing suspension polymerization method is to mix styrene, divinylbenzene, initiator and porogen evenly, and then disperse them into oil beads in the water phase containing dispersant under the action of stirring, and the oil beads are in the water phase. Coalescing and fragmentation continue to occur, resulting in varying sizes. In order to make the oil beads fully coalesce and break up in the water phase, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/01C08F212/08C08F212/36C08F2/20B01J13/14
Inventor 范江洋陈松于如军王彦兵李国兵
Owner TIANJIN UNIV
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