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Efficient non-oxidizing bactericide and preparation method thereof

A non-oxidizing, fungicide technology, applied in the fields of botanical equipment and methods, biocides, disinfectants, etc., can solve the problems of rising water treatment costs, large increase in the amount of chemicals and new water, and unsatisfactory effects.

Inactive Publication Date: 2014-04-23
URUMQI KEFAZHAN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The present invention aims at the leakage problem of the oil refining and chemical fertilizer circulating water system. The current treatment method is to add a large amount of chlorine-containing oxidizing fungicides and isothiazolinone or quaternary ammonium salt non-oxidizing fungicides, and carry out a large amount of Change the water, but the effect of these treatments is not as expected, and the amount of chemicals and new water has increased greatly, that is, the cost of water treatment has risen sharply, so an efficient and environmentally friendly fungicide is urgently needed to solve this problem

Method used

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  • Efficient non-oxidizing bactericide and preparation method thereof
  • Efficient non-oxidizing bactericide and preparation method thereof
  • Efficient non-oxidizing bactericide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Take 4 parts of maleic anhydride, 5 parts of sec-octanol, and 4 parts of p-toluenesulfonic acid, put them into the reaction kettle, stir at 60rpm, pass steam into the interlayer to heat the material to 130°C for esterification, and keep the temperature constant 2h;

[0029] 2) After constant temperature for 2 hours, turn off the heating steam, lower the temperature of the material to 103°C, add 5 parts of sodium bisulfite for sulfonation and stir while feeding, control the pH value to 8.0, and the reaction time is 5 hours;

[0030] 3) After reacting for 5 hours, turn off the heating steam completely, pass in cooling water, and after lowering the material temperature to 20°C, add 20 parts of sodium dimethyldithiocarbamate, 5 parts of biodispersant 508, and 15 parts of hydroxypropyl methacrylate Esters and 27 parts of desalted water, stirred evenly, filtered through 200 mesh and packaged.

Embodiment 2

[0032] 1) Take 4 parts of maleic anhydride, 5 parts of sec-octanol, and 4 parts of p-toluenesulfonic acid, put them into the reaction kettle, stir at 70rpm, pass steam into the interlayer to heat the material to 120°C for esterification, and Constant temperature 2h;

[0033] 2) After constant temperature for 2 hours, turn off the heating steam, lower the temperature of the material to 100°C, add 6 parts of sodium bisulfite for sulfonation, stir while adding the material, control the pH value to 9.5, and the reaction time is 5 hours;

[0034] 3) After reacting for 5 hours, turn off the heating steam completely, pass in cooling water, and after lowering the material temperature to 20°C, add 25 parts of sodium dimethyl dithiocarbamate, 15 parts of biodispersant 508, and 15 parts of hydroxypropyl methacrylate Esters and 16 parts of desalted water, stirred evenly, filtered through 200 mesh and packaged.

Embodiment 3

[0036] 1) Take 4 parts of maleic anhydride, 5 parts of sec-octanol, and 4 parts of p-toluenesulfonic acid, put them into the reaction kettle, stir at 80rpm, pass steam into the interlayer to heat the material to 140°C for esterification, And constant temperature 2h;

[0037] 2) After constant temperature for 2 hours, turn off the heating steam, lower the temperature of the material to 105°C, add 7 parts of sodium bisulfite for sulfonation, stir while adding the material, control the pH value to 7.0, and the reaction time is 5 hours;

[0038] 3) After reacting for 5 hours, turn off the heating steam completely, pass in cooling water, and after lowering the material temperature to 20°C, add 30 parts of sodium dimethyldithiocarbamate, 10 parts of biodispersant 508, and 10 parts of hydroxypropyl methacrylate Esters and 17 parts of desalted water, stirred evenly, filtered through 200 mesh and packaged.

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Abstract

The present invention provides an efficient non-oxidizing bactericide and a preparation method thereof. The raw materials comprise, by weight, 2-6 parts of maleic anhydride, 3-7 parts of 2-octanol, 2-6 parts of p-toluene sulfonic acid, 5-8 parts of sodium bisulfite, 17-23 parts of sodium n,n-dimethyl dithiocarbamate, 4-6 parts of a biological dispersant 508, 12-18 parts of hydroxy propyl methacrylate, and 20-47 parts of desalted water. The preparation method comprises: sequentially pouring maleic anhydride, 2-octanol and p-toluene sulfonic acid to a reaction kettle, carrying out stirring heating under a condition of 60-80 rpm to achieve a temperature of 120-140 DEG C, carrying out an esterification reaction, maintaining a constant temperature for 1.9-2.3 h, cooling the material to a temperature of 100-105 DEG C, adding sodium bisulfate, carrying out sulfonation under stirring, controlling the pH value of 7.0-9.5, carrying out a reaction for 3-7 h, cooling the material to a temperature of 20 DEG C, sequentially adding sodium n,n-dimethyl dithiocarbamate, a biological dispersant 508, hydroxy propyl methacrylate and desalted water, continuously stirring for 28-32 min, and filtering with a 200 mesh sieve to obtain the product.

Description

technical field [0001] The invention relates to a bactericide for water treatment, especially aimed at water quality in which heterotrophic bacteria in circulating water seriously exceed the standard, has excellent use effect and meets production requirements. Background technique [0002] In the process of industrial circulating water treatment, there will often be medium leakage in the production equipment, and the leakage will directly enter the circulating water, causing the data of heterotrophic bacteria in the circulating water to seriously exceed the standard. Among them, sulfate-reducing bacteria and nitrifying bacteria are difficult to control. It will cause the alkalinity of the system to drop rapidly, thereby greatly increasing the corrosion rate; on the other hand, it will cause the outbreak of microorganisms in the circulating water system, generate a large amount of biological slime, block the circulating water filter, filler and heat exchanger tube bundle, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/14A01P1/00A01N41/04
Inventor 詹毅杨桂萍
Owner URUMQI KEFAZHAN FINE CHEM
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