A organic sulfur disinfection algicide and method for making same

A technology of sulfur sterilization and algaecide and bactericide, which is applied in the field of organic sulfur sterilization and algaecide and its preparation, can solve the problems of reduced bactericidal ability, large environmental pollution, small application range, etc., and achieves good effect, good water solubility, Wide range of effects

Active Publication Date: 2009-09-02
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing organic sulfur bactericidal algicides are mainly dithiocyanomethane, isothiazolinone, thiram and dyson fungicides, etc., which have the following disadvantages in different degrees: poor water solubility, small scope of application , When the sulfide content in the injection water is too high, the bactericidal ability will be reduced or even invalid due to the action of sulfide.
Generally speaking, it has great environmental pollution; the process is complicated and the price is relatively high, etc.

Method used

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  • A organic sulfur disinfection algicide and method for making same
  • A organic sulfur disinfection algicide and method for making same
  • A organic sulfur disinfection algicide and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In a 1000ml four-necked flask equipped with mechanical stirring, a constant pressure dropping funnel, a reflux condenser and a thermometer, add 190g (1.0mol) of dibromoethane, 5g of fatty alcohol polyoxyethylene ether and 150g of ethanol at room temperature, and start stirring 172 g (1.0 mol) of dodecyldimethyl tertiary amine was slowly added dropwise at a temperature not higher than 90° C., and after the addition was completed, the temperature was raised to reflux for reaction for 4 hours. After cooling down to below 70°C, slowly add 97g (1.0mol) aqueous solution of potassium thiocyanate dropwise, and react for 4 hours after the addition to obtain the organosulfur bactericide and algicide (OSB1) of the present invention.

Embodiment 2

[0043] In a 1000ml four-necked flask equipped with mechanical stirring, a constant pressure dropping funnel, a reflux condenser and a thermometer, add 190g (1.0mol) of dibromoethane, 5g of fatty alcohol polyoxyethylene ether and 150g of ethanol at room temperature, and start stirring , at a temperature not higher than 90°C, slowly add 228g (1.0mol) of hexadecyldimethyl tertiary amine dropwise, after the addition is completed, the temperature is raised to reflux for reaction for 4 hours. After cooling down to below 70°C, slowly add 72g (1.0mol) of potassium hydrosulfide aqueous solution dropwise, and react for 4 hours after the addition to obtain the organosulfur bactericide and algicide (OSB2) of the present invention.

Embodiment 3

[0045] In a 1000ml four-necked flask equipped with mechanical stirring, a constant pressure dropping funnel, a reflux condenser and a thermometer, add 205g (1.0mol) of dibromopropane, 8g of fatty alcohol polyoxyethylene ether and 180g of isopropanol at room temperature, and open the Stir, and slowly add 172 g (1.0 mol) of dodecyldimethyl tertiary amine dropwise at a temperature not higher than 90°C. After the addition is completed, the temperature is raised to reflux for 4 hours. After cooling down to below 70°C, slowly add 97g (1.0mol) aqueous solution of potassium thiocyanate dropwise, and react for 4 hours after the addition to obtain the organosulfur bactericide and algicide (OSB3) of the present invention.

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Abstract

An organosulfur bactericidal algicide and a preparation method thereof, characterized in that it consists of a sulfur-containing group quaternary ammonium salt; a nonionic surfactant; a solvent and water; wherein the preparation method of the sulfur-containing group quaternary ammonium salt is in When the temperature does not exceed 90°C, add halides, long-chain alkylamines, non-ionic surfactants, and solvents to the reaction kettle in turn, and stir at 80-140°C for 2-4 hours; cool down to no more than 70°C Then add sulfide and react for 4 to 8 hours to make it.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an organic sulfur bactericide and algicide and a preparation method thereof. Background technique [0002] In industrial circulating cooling water, microorganisms growing on the metal surface form various types of biological slime. The composition of biological slime includes various complex microorganisms such as algae, bacteria, fungi and inorganic and organic impurities. Due to the continuous growth, metabolism and reproduction of microorganisms in these slimes, it is easy to cause corrosion and damage under the scale of metal equipment, thereby shortening the service life of the equipment and reducing the heat exchange effect of the heat exchanger. [0003] The same problem will occur with biological slime in oilfield reinjection water system, and the most harmful one is sulfate reducing bacteria (SRB). These bacteria and microorganisms can cause blockag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N41/00A01P13/00
Inventor 滕厚开姚光源薛瑞张磊于瑞香韩建华
Owner CHINA NAT OFFSHORE OIL CORP
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