Sterilizing synergistic agent for oxidizing biocide

A technology of synergist and bactericide, applied in the direction of bactericide, chemical for biological control, biocide, etc., can solve problems such as aggravation and leakage, and achieve strong surface activity, good bactericidal effect, and improved bactericidal effect. Effect

Inactive Publication Date: 2011-11-23
SHANGHAI WEILAI ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the amount of oxidizing biocides in the circulation system continues to rise, the ensuing corrosion problems also lead to increasing leakage, which forms a continuous vicious circle

Method used

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  • Sterilizing synergistic agent for oxidizing biocide
  • Sterilizing synergistic agent for oxidizing biocide
  • Sterilizing synergistic agent for oxidizing biocide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Prepare medicament 1 according to the following proportioning ratio: 200 kilograms of cetyltrimethylammonium chloride, 10 kilograms of dimethylhydantoin, and 790 kilograms of deionized water. The total amount of medicine is 1000 kg.

[0031] Test the number of bacteria in the water sample 10 6 pieces / ml. Add sodium hypochlorite and this agent to the water body. The killing rate of heterooxygen bacteria was determined by the plate counting method, and the results are shown in Table 1. Adding sodium hypobromite and this medicament in the water body, the results are shown in Table 2.

[0032] The bactericidal synergistic result of table 1 medicament 1 to sodium hypochlorite

[0033] (pcs / ml)

[0034]

[0035] The bactericidal synergistic result of table 2 medicament 1 to sodium hypobromite (on-site preparation)

[0036] (pcs / ml)

[0037]

[0038]As can be seen from the above results, the synergist of Example 1 has a significant bac...

Embodiment 2

[0040] Prepare the medicine according to the following ratio 2

[0041] 50 kg of dimethyl dioctadecyl ammonium chloride, 150 kg of dodecyl dimethyl benzyl ammonium chloride, 50 kg of tetradecyl tributyl phosphonium chloride, 5 kg of dibromohydantoin, rice Lanol ​​MSA 5 kg, deionized water 790 kg. The total amount of medicine is 1000 kg.

[0042] In a system with 10,000 tons of water, use sodium hypochlorite 20mg / L to maintain residual chlorine at 0.5mg / L. And use potion 2 to enhance the effect. Monitor the turbidity in the water body to evaluate the stripping performance of the agent. The initial turbidity of the system is 10NTU.

[0043] The synergy of table 3 medicament 2 to sodium hypochlorite stripping performance

[0044]

[0045]

[0046] It can be seen from the above table that the stripping effect of agent 1 combined with sodium hypochlorite is equivalent to that of quaternary ammonium salt 1227 with a higher concentration alone. However, because of the use...

Embodiment 3

[0054] Prepare the medicine according to the following ratio 3

[0055] Dimethyl dioctadecyl ammonium chloride 50 kg, dodecyl dimethyl benzyl ammonium chloride 100 kg, tetradecyl tributyl chloride 100 kg, 5 kg of dibromohydantoin, 795 kg of deionized water. The total amount of medicine is 1000 kg.

[0056] Carry out coupon corrosion test to the example 1-3 that the present invention mentions. The corrosion inhibition performance of the chemical agent on 20# carbon steel was determined. The experimental method is carried out according to the "Rotating Coupon Corrosion Test Method" in Sinopec's "Cooling Water Analysis and Experimental Methods". The results are as follows

[0057] The result of the corrosion test after table 5 example 1-3 medicament and sodium hypochlorite composite use

[0058]

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Abstract

The invention provides a sterilizing synergistic agent for an oxidizing biocide. The sterilizing synergistic agent comprises 10-30 parts by weight of long-carbon-chain nitrogen-group quaternary ammonium compound with 10-60 carbon atoms, 1-10 parts by weight of hydantoin heterocyclic compound and 50-100 parts by weight of water. The sterilizing synergistic agent can be used for synergizing chlorine and bromine oxidizing biocides, can achieve a favorable sterilizing effect at an extremely-low consumption level, has a greatly increased stripping function on clay, and can be used for effectively reducing the corrosion action of halogen sterilizing agents on a metal pipeline.

Description

technical field [0001] The invention relates to a bactericidal synergist, in particular to a bactericidal synergist used for halogen oxidizing bactericides. Background technique [0002] In the industrial water circulation system, as the cooling water is concentrated, the reproduction of microorganisms will be intensified. Once the microorganisms are not well controlled, there are mainly two problems. One aspect is microbial corrosion, which can be manifested as severe uniform corrosion, or crevice corrosion and stress corrosion cracking; the other is the problem of microbial slime, which will not only reduce the cooling effect of heat exchangers and cooling towers, but also deteriorate Water quality will also reduce the corrosion inhibition effect of water quality stabilizer. In order to inhibit and kill microorganisms and algae, the method of adding bactericide and algicide is often used. [0003] Commonly used fungicides are divided into two types: oxidizing and non-ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/24A01N25/30A01N25/00A01N59/00A01P3/00A01P1/00
Inventor 倪铁军刘建凤赵鸿钧
Owner SHANGHAI WEILAI ENTERPRISE
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