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Potassium ferrate bactericide

A technology of potassium ferrate and bactericide, which is applied in the fields of oil field water injection bactericide and potassium ferrate bactericide, which can solve the problems of high production cost, achieve the effects of bacterial growth inhibition, good compatibility, and solve the problem of drug resistance

Inactive Publication Date: 2015-05-27
QINGDAO WATER WORLD ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing fungicides generally have certain deficiencies in the treatment effect, and the production cost is also relatively high

Method used

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  • Potassium ferrate bactericide
  • Potassium ferrate bactericide
  • Potassium ferrate bactericide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013]

[0014] Preparation scheme: Add chlorine concentrated nitric acid potassium permanganate to the reactor, add excess potassium chloride after the reaction is complete, and obtain a saturated potassium hypochlorite solution; add iron to the above solution, add concentrated nitric acid, and purify and dry after reaction. get the product.

[0015] The invention can effectively solve the problem of drug resistance of sulfate-reducing bacteria

Embodiment 2

[0017]

[0018] The preparation scheme is the same as above.

[0019] This product has good compatibility and can effectively kill and inhibit sulfate-reducing bacteria in oilfields.

Embodiment 3

[0021]

[0022]

[0023] The preparation method is the same as above.

[0024] The invention has remarkable inhibitory effect on the growth of bacteria in oilfield water injection and oil recovery production systems, and is especially suitable for the treatment and reinjection systems of polymer-containing oil recovery sewage.

[0025] In addition, the preparation process of the present invention has few side reactions, simple operation, no discharge of any pollutants, mild reaction conditions and low energy consumption.

[0026] This product is mainly used for the sterilization treatment of oilfield water treatment systems and similar water treatment systems.

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Abstract

The invention provides a potassium ferrate bactericide which is composed of potassium permanganate, concentrated nitric acid, potassium chloride, iron and chlorine gas. The potassium ferrate bactericide is prepared by feeding the chlorine gas, the concentrated nitric acid and the potassium permanganate into a reactor; carrying out a reaction; adding excessive potassium chloride after the reaction finished to obtain a saturated potassium hypochlorite solution; adding the iron and the concentrated nitric acid into the solution; carrying out a reaction; and purifying and drying a reaction product after the reaction finished to obtain the potassium ferrate bactericide. The potassium ferrate bactericide has a significant inhibition effect on bacteria breeding in an oilfield flooding system and an oil extraction and production system, and especially is suitable for being used in an oil extraction sewage treatment and reinjection system containing polymers.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a fungicide for oilfield water injection, specifically a potassium ferrate fungicide. Background technique [0002] At present, the fungicides used in oil fields are generally used in civil water and industrial circulating water, and can be divided into aerobic and non-oxygen fungicides according to their sterilization mechanism. However, in many onshore oil fields in my country, the water injection system is mainly carried out under airtight conditions, and the organic matter content in the injection water is very high. Usually, a large amount of oxidant is required to achieve the purpose of sterilization. The sterilization effect is not good, and it will increase corrosion. The most used non-oxidizing fungicides are quaternary ammonium salts, quaternary phosphonium salts, alkylguanidines and compound fungicides. Quaternary phosphonium salt fungicides are difficult to in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01P1/00C02F1/50
Inventor 周相勇王鉴
Owner QINGDAO WATER WORLD ENVIRONMENTAL PROTECTION TECH
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