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Clean production process of 122 type cation exchange resin

A technology of cation exchange and clean production, applied in the direction of cation exchange, ion exchange, chemical instruments and methods, etc., can solve the problems of difficult production wastewater treatment and high operating costs, and achieve the effect of solving difficult and low treatment costs

Active Publication Date: 2021-01-29
石家庄惠洁科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a clean production process of 122-type cation exchange resin, which solves the problems in the prior art that the production wastewater of 122-type cation-exchange resin is difficult to treat and the operation cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A clean production process of 122 type cation exchange resin, comprising the following steps:

[0029] S1. Salicylic acid, phenol, and formaldehyde are polymerized to emulsification under acidic conditions, and then phenol and formaldehyde are added to polymerize into prepolymers under alkaline conditions. Turbine oil is used as the oil phase medium, and reverse phase polymerization is formed into spheres. After the agent is dissolved in hot water, it is used as a water washing solution to wash away the turbine oil on the surface of the sphere, and the solid and liquid are separated to obtain the first solid phase and the first liquid phase. The sphere that has been washed off the surface of the turbine oil is vacuum dehydrated to obtain the 122 type Cation exchange resin, wherein the volume fraction of formaldehyde is 30%;

[0030] S2. Adsorb the first liquid phase with an adsorption material, the adsorption material is activated carbon, the turbine oil in the first li...

Embodiment 2

[0036] A clean production process of 122 type cation exchange resin, comprising the following steps:

[0037] S1. Salicylic acid, phenol, and formaldehyde are polymerized to emulsification under acidic conditions, and then phenol and formaldehyde are added to polymerize into prepolymers under alkaline conditions. Turbine oil is used as the oil phase medium, and reverse phase polymerization is formed into spheres. After the agent is dissolved in hot water, it is used as a water washing solution to wash away the turbine oil on the surface of the sphere, and the solid and liquid are separated to obtain the first solid phase and the first liquid phase. The sphere that has been washed off the surface of the turbine oil is vacuum dehydrated to obtain the 122 type Cation exchange resin, wherein the volume fraction of formaldehyde is 30%;

[0038] S2. Adsorb the first liquid phase with an adsorption material, the adsorption material is zeolite, the turbine oil in the first liquid phas...

Embodiment 3

[0044] A clean production process of 122 type cation exchange resin, comprising the following steps:

[0045] S1. Salicylic acid, phenol, and formaldehyde are polymerized to emulsification under acidic conditions, and then phenol and formaldehyde are added to polymerize into prepolymers under alkaline conditions. Turbine oil is used as the oil phase medium, and reverse phase polymerization is formed into spheres. After the agent is dissolved in hot water, it is used as a water washing solution to wash away the turbine oil on the surface of the sphere, and the solid and liquid are separated to obtain the first solid phase and the first liquid phase. The sphere that has been washed off the surface of the turbine oil is vacuum dehydrated to obtain the 122 type Cation exchange resin, wherein the volume fraction of formaldehyde is 30%;

[0046] S2. Adsorb the first liquid phase with an adsorption material, the adsorption material is alumina, the turbine oil in the first liquid phas...

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Abstract

The invention belongs to the technical field of ion exchange resin, and provides a clean production process of 122 type cation exchange resin. The clean production process comprises the steps of carrying out solid-liquid separation on a waste liquid obtained after water washing to obtain a first solid phase and a first liquid phase, adsorbing the first liquid phase by using an adsorption material,heating the remaining liquid, and recycling as a water washing liquid; washing the first solid phase with alkali liquor to obtain alkali washing wastewater, carrying out solid-liquid separation to obtain a second solid phase and a second liquid phase, adsorbing the second liquid phase with a targeted adsorbent, desorbing the second liquid phase with formaldehyde, preparing a desorption solution into a phenol raw material, and returning the phenol raw material to participate in polycondensation reaction; washing the second solid phase with an acid solution to obtain pickling wastewater, and carrying out solid-liquid separation to obtain a third solid phase and a third liquid phase; and adsorbing the third liquid phase by using a targeted adsorbent, desorbing by using formaldehyde, preparing a salicylic acid raw material from the desorption solution, and returning to participate in polycondensation reaction. Through the technical scheme, the problems of high difficulty in treatment of 122 type cation exchange resin production wastewater and high operation cost in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of ion exchange resins, and relates to a clean production process of 122-type cation exchange resins. Background technique [0002] Salicylic acid-phenol-formaldehyde (type 122) cation exchange resin is a weakly acidic phenolic cation exchange resin, mainly used for the decolorization of streptomycin, oxytetracycline, tetracycline and other antibiotics, and the decolorization and purification of monosodium glutamate and sugars , the recovery of vitamin B12 protease, the removal of divalent ions such as Ca(II) and Mg(II) in water, etc. This resin contains functional groups such as a hydrophilic skeleton structure, -OH and -COOH, and has the characteristics of high selectivity of chelating resins; the raw materials are cheap, the synthesis process is simple, and the economy is good. The production of 122-type cation exchange resin is to prepolymerize salicylic acid, phenol and formaldehyde first to obtain a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J39/19
CPCB01J39/19
Inventor 吕志芦远卓
Owner 石家庄惠洁科技有限公司
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