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SRB (sulfate reducing bacteria) inhibitor for oil storage tank and use method of SRB inhibitor

A technology of inhibitors and oil storage tanks, applied in the direction of botanical equipment and methods, applications, biocides, etc., can solve the problems of rare sulfate-reducing bacteria, corrosion and anti-corrosion methods, etc., achieve significant anti-bacterial and anti-corrosion effects, and reduce operating costs Cost, the effect of extending the service life of the reserve

Active Publication Date: 2015-12-16
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few anti-corrosion methods for sulfate-reducing bacteria corrosion in crude oil storage tanks

Method used

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  • SRB (sulfate reducing bacteria) inhibitor for oil storage tank and use method of SRB inhibitor
  • SRB (sulfate reducing bacteria) inhibitor for oil storage tank and use method of SRB inhibitor
  • SRB (sulfate reducing bacteria) inhibitor for oil storage tank and use method of SRB inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this experiment, the used inhibitor of the present invention consists of 100 parts by weight of glutaraldehyde, 70 parts by weight of dodecyldimethylbenzyl ammonium bromide, 15 parts by weight of lysozyme, 20 parts by weight according to the ratio of parts by mass. Protease in parts by weight, sodium di-o-phenylethylenediaminoacetate in 10 parts by weight, tetrakis hydroxymethyl phosphorus sulfate in 5 parts by weight; traditional fungicide 1 is made of glutaraldehyde in 100 parts by weight; traditional fungicide 2 It is composed of 70 parts by weight of dodecyl dimethyl benzyl ammonium bromide; the biological enzyme is composed of 15 parts by weight of lysozyme and 20 parts by weight of protease; the chelating agent is composed of 10 parts by weight of di-o-phenylethylene glycol It is composed of sodium aminoacetate; the scale dissolver is composed of 5 parts by weight of tetrakis hydroxymethyl phosphorus sulfate. Take the sediment sewage from four crude oil storage...

Embodiment 2

[0031]In this experiment, the inhibitor of the present invention used is composed of 60 parts by weight of acrolein, 30 parts by weight of dodecyldimethylbenzyl ammonium chloride, 20 parts by weight of lysozyme, 30 parts by weight of The protease of 20 parts by weight, the sodium ethylenediamine disuccinate of 20 parts by weight, the tetrakis hydroxymethyl phosphorus sulfate of 10 parts by weight are formed; Traditional fungicide 3 is made of acrolein of 60 parts by weight; Traditional fungicide 4 is made of 30 parts by weight The dodecyl dimethyl benzyl ammonium chloride is composed of; the biological enzyme is composed of 20 parts by weight of lysozyme and 30 parts by weight of protease; the chelating agent is composed of 20 parts by weight of sodium ethylenediamine disuccinate ; The scale dissolving agent is composed of 10 parts by weight of tetrakis hydroxymethyl phosphorus sulfate. Take sediment sewage from four crude oil storage tanks in a refinery in Qingdao, and add 10...

Embodiment 3

[0035] In this experiment, the inhibitor of the present invention used is composed of 80 parts by weight of glutaraldehyde, 18 parts by weight of lysozyme, 25 parts by weight of protease, and 10 parts by weight of di-o-phenylethylenediaminoacetic acid according to the ratio of parts by mass. sodium, 10 parts by weight of sodium ethylenediamine disuccinate, and 8 parts by weight of tetrakisphosphonium sulfate; traditional fungicide 5 is made of 80 parts by weight of pentadiene; biological enzymes are made of 18 parts by weight of lysozyme and 25 parts by weight of protease; the chelating agent is made of 10 parts by weight of sodium di-o-phenylethylenediaminoacetate and 10 parts by weight of sodium ethylenediamine disuccinate; the scale dissolver is made of 8 parts by weight of tetramethylol Composed of phosphorous sulfate. Take sediment sewage from a crude oil storage tank of a refinery in Qingdao, and add 100mg / L of traditional fungicide 5, biological enzyme, chelating agent ...

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Abstract

An SRB (sulfate reducing bacteria) inhibitor for an oil storage tank comprises components in parts by mass as follows: 60-100 parts of glutaraldehyde or acrolein aldehydes, and or 30-70 parts of dodecyl dimethyl benzyl ammonium bromide or dodecyl dimethyl benzyl ammonium chloride, 15-20 parts of lysozyme, 20-30 parts of protease, 10-20 parts of diorthophthalic ethanediamine acetate and / or 10-20 parts of ethylene diamino-disuccinic acid salt and 5-10 parts of tetrakis hydroxymethyl phosphonium sulfate. The invention further discloses a method for using the SRB inhibitor for the oil storage tank, that is, the inhibitor is added according to the concentration of S<2-> in sedimentation water and mineralization degree. The inhibitor has the characteristics of small dosage, convenience in use, wide sources, low toxicity and the like and has double effects of sterilization and corrosion prevention.

Description

technical field [0001] The invention relates to the technical field of anticorrosion of oil storage equipment, in particular to an inhibitor of sulfate-reducing bacteria in an oil storage tank. technical background [0002] my country's petroleum and petrochemical industries have a large number of oil storage tanks. The bottom of these storage tanks will deposit sewage to varying degrees. Sulphate reducing bacteria (SRB) in sewage can reduce sulfur compounds in sewage and crude oil to active sulfur (S 2- ), resulting in severe corrosion of the inner wall of the storage tank. In addition, Ca in sediment sewage 2+ , Mg 2+ , Fe 2+ 、Na + Plasma can promote the corrosion of the inner wall of the oil storage tank, resulting in a large area of ​​corrosion and perforation at the bottom of the tank. According to statistics, the maintenance cost of storage tanks and pipelines caused by corrosion and perforation in my country is as high as 500 million yuan every year. It can be s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N61/00A01P1/00A01N35/02A01N33/12
Inventor 刘春爽赵东风国亚东吴伟林赵朝成刘芳
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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