Method for producing phenol adsorbent resin

Abstract

The invention provides a preparation method of phenol adsorbent resin. The preparation method comprises the following steps of: with small-granularity waste polymerization white spheres of macroporous ion exchange resin within the granularity range of 45-60 meshes adopted, extracting to obtain a porogenic agent, stoving, carrying out chloromethylation according to a macroporous anion resin standard process until chloride content is 15-25%, washing chloride spheres with water until no chloride ion exist after reaction is finished, stoving, then carrying out Friedel-Crafts reaction and then crosslinking, and then carrying out surface fluorination to generate the adsorbent resin with high specific surface area. The phenol adsorbent resin obtained by the preparation method provided by the invention has high adsorption capacity, the phenol adsorption capacity is more than 100mg per ml of the resin, and the phenol adsorbent resin has high strength, is difficult to break and has short regeneration time.

Description

technical field

[0001] The invention relates to a preparation method of resin, in particular to a preparation method of phenol adsorption resin. Background technique

[0002] Phenols are highly toxic organic compounds that can cause protein deterioration and coagulation if they enter the human body. If the phenol content in the water is greater than 10mg / L, aquatic organisms such as fish cannot survive. Irrigation with water with a phenol content higher than 100mg / L will inevitably lead to crop yield reduction and death.

[0003] Nankai University cooperates with Tianjin Weijin Chemical Factory, Jiangsu Petrochemical Institute cooperates with Changzhou No. 2 Chemical Factory. NKA resin and H-103 resin are used to treat phenolic wastewater respectively, and industrial devices have been built with good operation effect. Effluent P (phenol) <0.5mg / L, phenol adsorption removal rate reaches 99.99%, COD removal rate is 70%. Using dilute lye as a desorbing agent, the phenol ...

Examples

Embodiment 1

[0042] The preparation method is as follows:

[0043] 1). Extraction

[0044] Use commercially available D001 small-sized waste polymerized white balls, the white balls have a particle size of ≤325 μm, and are about 45-60 mesh, add 200# gasoline, extract at about 60°C, evaporate the porogen in the white balls, and dry them until use.

[0045] 2). Chloromethylation reaction:

[0046] Add the white balls extracted in step 1) into chloromethyl ether, add anhydrous zinc chloride with the same mass as the white balls as a catalyst, and carry out chloromethylation reaction at 30°C, the molar ratio of reactants is 1, and obtain chlorine Balls, controlling the chlorine content to be 15%; after the reaction, the chlorine balls were washed with water until there were no chloride ions, and dried to obtain chloromethylated chlorine balls;

[0047] 3).Pay-Craft reaction post-crosslinking

[0048] The chloromethylated chlorine spheres obtained in step 2) are fully swelled with nitrobenz...

Embodiment 2

[0052] The raw material is commercially available D006 waste polymerized white balls, the particle size of which is less than or equal to 325 μm, which is about 45-60 mesh, and the others are the same as in Example 1.

[0053] The specific surface area of ​​the obtained product is 1020m 2 / g, numbered KRB-2.

Embodiment 3

[0055] As the raw material, commercially available D307 waste polymerized white balls are used. The white balls have a particle size of ≤325 μm and are about 45-60 mesh. Others are the same as in Example 1.

[0056] The specific surface area of ​​the obtained product is 1042m 2 / g, numbered KRB-3.

technical field

[0001] The invention relates to a preparation method of resin, in particular to a preparation method of phenol adsorption resin. Background technique

[0002] Phenols are highly toxic organic compounds that can cause protein deterioration and coagulation if they enter the human body. If the phenol content in the water is greater than 10mg / L, aquatic organisms such as fish cannot survive. Irrigation with water with a phenol content higher than 100mg / L will inevitably lead to crop yield reduction and death.

[0003] Nankai University cooperates with Tianjin Weijin Chemical Factory, Jiangsu Petrochemical Institute cooperates with Changzhou No. 2 Chemical Factory. NKA resin and H-103 resin are used to treat phenolic wastewater respectively, and industrial devices have been built with good operation effect. Effluent P (phenol) <0.5mg / L, phenol adsorption removal rate reaches 99.99%, COD removal rate is 70%. Using dilute lye as a desorbing agent, the phenol ...

Examples

Embodiment 1

[0042] The preparation method is as follows:

[0043] 1). Extraction

[0044] Use commercially available D001 small-sized waste polymerized white balls, the white balls have a particle size of ≤325 μm, and are about 45-60 mesh, add 200# gasoline, extract at about 60°C, evaporate the porogen in the white balls, and dry them until use.

[0045] 2). Chloromethylation reaction:

[0046] Add the white balls extracted in step 1) into chloromethyl ether, add anhydrous zinc chloride with the same mass as the white balls as a catalyst, and carry out chloromethylation reaction at 30°C, the molar ratio of reactants is 1, and obtain chlorine Balls, controlling the chlorine content to be 15%; after the reaction, the chlorine balls were washed with water until there were no chloride ions, and dried to obtain chloromethylated chlorine balls;

[0047] 3).Pay-Craft reaction post-crosslinking

[0048] The chloromethylated chlorine spheres obtained in step 2) are fully swelled with nitrobenz...

Embodiment 2

[0052] The raw material is commercially available D006 waste polymerized white balls, the particle size of which is less than or equal to 325 μm, which is about 45-60 mesh, and the others are the same as in Example 1.

[0053] The specific surface area of ​​the obtained product is 1020m 2 / g, numbered KRB-2.

Embodiment 3

[0055] As the raw material, commercially available D307 waste polymerized white balls are used. The white balls have a particle size of ≤325 μm and are about 45-60 mesh. Others are the same as in Example 1.

[0056] The specific surface area of ​​the obtained product is 1042m 2 / g, numbered KRB-3.