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Efficient bactericide and preparation method thereof

A bactericide and high-efficiency technology, applied in the field of high-efficiency bactericide and its preparation, can solve the problems of poor bactericidal effect and reduce the bactericidal effect of sewage containing polymer, and achieve good bactericidal effect, obvious bactericidal and corrosion inhibition effects, and good compatibility. Effect

Active Publication Date: 2022-01-28
胜利油田海发环保化工有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual production and operation of oilfields, cationic surfactant fungicides will react with the polymer in the reinjection water and lose their efficacy, making the bactericidal effect worse. In addition, the combined influence of oil and suspended solids in the reinjection water will further reduce the Its bactericidal effect in the sewage containing poly

Method used

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  • Efficient bactericide and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The high-efficiency fungicide described in the present embodiment 1 is composed of the following raw materials in terms of mass percentage:

[0046] Quaternary ammonium fungicide 15%

[0047] Didodecyldimethyldibenzyltin ammonium chloride 10%

[0048] Dodecyltriphenylphosphine bromide 2.5%

[0049] Bistributyltin oxide 0.5%

[0050] Penetrant 22%

[0051] water balance;

[0052] Wherein: the quaternary ammonium salt fungicide is N-metronidazole-N-(dodecyldimethyl)-2-hydroxyl-1,3-diammonium chloride (MHTD) and polychloride-2 -Mixture of hydroxypropyl-1,1-N-dimethylamine, the mass ratio of MHTD to polychlorinated-2-hydroxypropyl-1,1-N-dimethylamine is 1:1.3.

[0053] The N-metronidazole-N-(dodecyldimethyl)-2-hydroxyl-1,3-diammonium chloride (MHTD) is first prepared with dodecyldimethylamine, hydrogen chloride and Synthesis of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl dodecyl ammonium chloride from epichlorohydrin; then N-(3-chloro-2-hydroxypropyl) -N,N-Dimethyl dod...

Embodiment 2

[0062] The high-efficiency fungicide described in the present embodiment 2 is composed of the following raw materials in terms of mass percentage:

[0063] Quaternary ammonium fungicide 10%

[0064] Didodecyldimethyldibenzyltin ammonium chloride 12%

[0065] Dodecyltriphenylphosphine bromide 2.0%

[0066] Bistributyltin Oxide 1.0%

[0067] Penetrant 18%

[0068] water balance;

[0069] Wherein: the quaternary ammonium salt fungicide is N-metronidazole-N-(dodecyldimethyl)-2-hydroxyl-1,3-diammonium chloride (MHTD) and polychloride-2 -Mixture of hydroxypropyl-1,1-N-dimethylamine, the mass ratio of MHTD to polychlorinated-2-hydroxypropyl-1,1-N-dimethylamine is 1:1.25.

[0070] The N-metronidazole-N-(dodecyldimethyl)-2-hydroxyl-1,3-diammonium chloride (MHTD) is first prepared with dodecyldimethylamine, hydrogen chloride and Synthesis of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl dodecyl ammonium chloride from epichlorohydrin; then N-(3-chloro-2-hydroxypropyl) -N,N-Dimethyl do...

Embodiment 3

[0079] The high-efficiency fungicide described in the present embodiment 3 is composed of the following raw materials in terms of mass percentage:

[0080] Quaternary ammonium fungicide 13%

[0081] Didodecyldimethyldibenzyltin ammonium chloride 8%

[0082] Dodecyltriphenylphosphine bromide 3.5%

[0083] Bistributyltin oxide 0.8%

[0084] Penetrant 20%

[0085] water balance;

[0086] Wherein: the quaternary ammonium salt fungicide is N-metronidazole-N-(dodecyldimethyl)-2-hydroxyl-1,3-diammonium chloride (MHTD) and polychloride-2 -Mixture of hydroxypropyl-1,1-N-dimethylamine, the mass ratio of MHTD to polychlorinated-2-hydroxypropyl-1,1-N-dimethylamine is 1:1.2.

[0087] The N-metronidazole-N-(dodecyldimethyl)-2-hydroxyl-1,3-diammonium chloride (MHTD) is first prepared with dodecyldimethylamine, hydrogen chloride and Synthesis of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl dodecyl ammonium chloride from epichlorohydrin; then N-(3-chloro-2-hydroxypropyl) -N,N-Dimethyl dode...

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Abstract

The invention belongs to the technical field of bactericides, and particularly relates to an efficient bactericide and a preparation method thereof. The efficient bactericide is prepared from the following raw materials: a quaternary ammonium salt bactericide, didodecyl dimethyl dibenzyl ammonium tin chloride, dodecyl triphenyl phosphonium bromide, ditributyltin oxide, a penetrating agent and water, wherein the quaternary ammonium salt bactericide is a mixture of MHTD (Methyl Hexamethylenetetramine) and poly (2-hydroxypropyl-1, 1-N-dimethylamine chloride), and the mass ratio of the MHTD to the poly (2-hydroxypropyl-1, 1-N-dimethylamine chloride) is 1: (1.2-1.3). The efficient bactericide disclosed by the invention has a good bactericidal effect on common sulfate reducing bacteria, saprophytic bacteria and iron bacteria in reinjection water, is long in timeliness, can achieve a good bactericidal effect by adding a small amount of the efficient bactericide, has no corrosion and a corrosion inhibition effect, does not generate drug resistance after being used for a long time, and is good in compatibility with other medicaments in the reinjection water.

Description

technical field [0001] The invention belongs to the technical field of fungicides, and in particular relates to a high-efficiency fungicide and a preparation method thereof. Background technique [0002] Microbial corrosion is a phenomenon in which the whole process of microbial life activities participates in or leads to the corrosion process of materials. The bacteria involved in microbial corrosion include sulfate reducing bacteria (SRB), saprophytic bacteria (TGB), and iron bacteria (FB). These three types of bacteria are all anaerobic bacteria, but the most important anaerobic bacteria causing MIC phenomenon is SRB, and these bacteria exist throughout the oilfield sewage system. [0003] Sulfate-reducing bacteria are anaerobic bacteria, which are ubiquitous bacteria that can survive under high salinity, high pressure and high temperature. The optimum growth temperature is 20-40°C. Sulfate is reduced to sulfide and atomic oxygen. Sulfate-reducing bacteria are often fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N33/12A01N55/04A01N57/22A01N43/50A01N25/30A01P1/00C02F1/50
CPCA01N33/12A01N55/04A01N57/22A01N43/50A01N25/30C02F1/50C02F2303/08C02F2303/04Y02A50/30
Inventor 艾明刚刘明哲李伟朱浩姚长忠
Owner 胜利油田海发环保化工有限责任公司
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