Preparation method of resin beads

A technology of resin balls and styrene monomers, applied in the field of preparation of resin balls, can solve the problems of large loss of high aromatic content solvent, difficult treatment, and difficulty in effective utilization of acid residues, so as to improve adsorption efficiency, ensure reusable, The effect of maintaining thermal and chemical stability

Inactive Publication Date: 2018-05-25
任丽丽
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Problems solved by technology

The acid slag obtained by applying this method is difficult to effectively use, difficult to handle, and the solvent with high aromatic content has a large loss

Method used

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Embodiment Construction

[0006] A method for preparing dearomatized resin balls, the specific steps are as follows: under the action of nitrogen, take styrene monomer and add it to a solvent, add a catalyst and triethylamine, drop a mixed solution of a sulfonating agent and a solvent, and use a column layer Separating and purifying the product by chromatography to obtain sulfone-containing styrene monomer, adding styrene monomer and sulfone-containing styrene monomer to the reaction device, using polyvinyl alcohol aqueous solution as a solvent, feeding nitrogen, and adding a cross-linking agent , The molar ratio of cross-linking agent to styrene monomer is 1:50-100; react to obtain solid balls, filter to obtain resin balls, add resin balls to a mixed solvent of tetrahydrofuran and dilute hydrochloric acid, and filter to obtain resin balls.

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Abstract

The invention relates to a preparation method of resin beads, which mainly solves the problems that the existing catalytic hydrogenation technology is relatively complicated in process, high in cost,high in solvent extraction cost and difficult in effectively utilizing and treating acid residues obtained by a sulfonation method. The preparation method comprises the following steps: adding styrenemonomers into a solvent in the presence of nitrogen, adding a catalyst and triethylamine, dropwise adding a mixed solution of a sulfonating agent and solvent, separating and purifying a product by utilizing a column chromatography, obtaining sulfuryl-containing styrene monomers, adding the styrene monomers and the sulfuryl-containing styrene monomers into a reaction apparatus, adopting a polyvinyl alcohol aqueous solution as the solvent, introducing nitrogen, adding a cross-linking agent, reacting to obtain solid beads, and filtering to obtain the resin beads. The preparation method of the resin beads has the advantages that the heat stability and chemical stability of the resin beads can be kept, and the adsorption efficiency can be increased; and the reusability of the resin beads can be ensured.

Description

technical field [0001] The invention relates to a method for preparing resin balls. Background technique [0002] At present, the deep debenzene technology of extraction solvent mainly includes catalytic hydrogenation method, extraction method and sulfonation method. The technical difficulties of catalytic hydrogenation mainly focus on the research of catalysts, and most of the catalysts work under high temperature and pressure, the process is relatively complicated, the cost is high, and it is only suitable for occasions with hydrogen sources. Solvent extraction is extremely costly due to the distillative recovery of the solvent, the washing of the residual phase, and the recovery of the solvent from the aqueous phase. The sulfonation method is that the low-boiling point sulfonic acid is soluble in the acid phase, but insoluble in the oil phase. The high-boiling point sulfonic acid can have certain solubility in the oil due to the difference in the hydrocarbon structure, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/14C08F2/10C08J3/12
CPCC08F212/08C08F212/14C08J3/12C08J2325/06C08J2325/18C08F2/10
Inventor 任丽丽
Owner 任丽丽
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