Preparation method of process feed liquid formaldehyde-removing resin

A technology for removing aldehyde resin and material liquid, applied in the field of resin, can solve the problems of high cost of sewage treatment and damaged performance, and achieve the effect of good aldehyde removal ability and economic effect, good preservation degree and good economic effect.

Inactive Publication Date: 2021-04-30
JIANGSU SUQING WATER TREATMENT ENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing process material liquid formaldehyde removal resin in order to solve the problems of high cost of sewage treatment and large performance damage after regeneration

Method used

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  • Preparation method of process feed liquid formaldehyde-removing resin

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] S1. Prepare 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 can of nitrogen and 1 part of anti-aging agent;

[0021] S2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, feed nitrogen into it during the reaction, the reaction temperature is controlled at 150 degrees, and the reaction time is controlled at 5 hours to obtain crude alkyd resin;

[0022] S3, dissolving and mixing the crude alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;

[0023] S4, mixing the resin solution with isopropanol and ethanol, and slowly adding n-butyl acetate and anti-aging agent, the reaction temperature is controlled at 50 degrees, and the reaction time is controlled at 3 hours to obtain a crude product;

[0024] S5. Dilute the crude product with xylene, and control the reactio...

Embodiment 2

[0026] S1. Prepare 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 can of nitrogen and 1 part of anti-aging agent;

[0027] S2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, feed nitrogen into it during the reaction, the reaction temperature is controlled at 150 degrees, and the reaction time is controlled at 5 hours to obtain crude alkyd resin;

[0028] S3, dissolving and mixing the crude alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;

[0029] S4, mixing the resin solution with isopropanol and ethanol, and slowly adding n-butyl acetate and anti-aging agent, the reaction temperature is controlled at 250 degrees, and the reaction time is controlled at 3 hours to obtain a crude product;

[0030] S5. Dilute the crude product with xylene, and control the reacti...

Embodiment 3

[0032] S1. Prepare 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 can of nitrogen and 1 part of anti-aging agent;

[0033] S2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, feed nitrogen into it during the reaction, the reaction temperature is controlled at 250 degrees, and the reaction time is controlled at 5 hours to obtain crude alkyd resin;

[0034] S3, dissolving and mixing the crude alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;

[0035] S4, mixing the resin solution with isopropanol and ethanol, and slowly adding n-butyl acetate and anti-aging agent, the reaction temperature is controlled at 50 degrees, and the reaction time is controlled at 3 hours to obtain a crude product;

[0036] S5. Dilute the crude product with xylene, and control the reactio...

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Abstract

The invention discloses a preparation method of process feed liquid formaldehyde removal resin, and relates to the field of resin, and the preparation method of the process feed liquid formaldehyde removal resin comprises the following steps: S1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent; and S2, enabling the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol to react, introducing nitrogen during reaction, controlling the reaction temperature to be 150-250 DEG C and the reaction time to be 5 h, and obtaining crude alkyd resin. The formaldehyde removal resin for the process feed liquid has high formaldehyde removal capacity and good economic effect on the process feed liquid, and compared with commercially available common similar products, the formaldehyde removal resin for the process feed liquid has similar mass / volume exchange capacity, but is low in price and has excellent economic effect; and in the field of process feed liquid processing, the regenerated mass / volume exchange capacity performance of the process feed liquid formaldehyde removal resin is relatively high in preservation degree.

Description

technical field [0001] The invention relates to the field of resins, in particular to a method for preparing a resin for removing formaldehyde from process feed liquid. Background technique [0002] Formaldehyde is an organic chemical substance with the formula HCHO or CH 2 O, molecular weight 30.03, also known as formaldehyde. It is a colorless and irritating gas, which is irritating to human eyes and nose. The relative density of the gas is 1.067, the density of the liquid is 0.815g / cm3, the melting point is -92°C, the boiling point is -19.5°C, and it is easily soluble in water and ethanol. Up to 55%, generally 35%-40%, usually 37%, called formalin, commonly known as formalin. [0003] The process feed liquid generally needs to be dealdehyded by resin. Because the mass / volume exchange capacity performance of many commercially available resins is significantly reduced after regeneration, resulting in increased sewage treatment costs, and many commercially available resins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/49C08G63/78
CPCC08G63/48C08G63/78
Inventor 包孝林蔡小华钱平
Owner JIANGSU SUQING WATER TREATMENT ENG GROUP
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