A organic sulfur disinfection algicide and method for making same

A sulfur bactericidal algicide and organic technology, applied in the field of organic sulfur bactericidal algicide and its preparation, can solve the problems of reduced bactericidal ability, large environmental pollution, and small application range, and achieve good effect, good water solubility, and applicable wide range of effects

Active Publication Date: 2008-04-09
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
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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

The invention provides organic sulfur germicide sterilizing algaecide and the preparation method thereof. The organic sulfur germicide sterilizing algaecide is composed of alkyl pyridinium salt containing sulfur radical; nonionic surfactant; solvent and water. The alkyl pyridinium salt containing sulfur radical has the preparation method that halogenide, long carbon-chain alkylamine, nonionic surfactant, and solvent are put into the reaction kettle in turn in under 90 DEG C, and are mixed round 2-4 hours in 80-140 DEG C; the temperature is lowered not more than 70 DEG C, and then sulfide is added for reacting 4-8 hours.

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 Applications(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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