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Oil repellents

A technology of oil-displacing agent and main agent, which is applied in the field of oil-displacing agent, can solve the problems that oil-containing industrial circulating cooling water and oil-containing industrial wastewater cannot be effectively applied, and application is not considered, and achieve strong surface activity and penetration ability, and use Simple and effective, good oil displacement effect

Active Publication Date: 2006-11-22
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application in this field is not considered in the existing oil displacement agents, so it is naturally impossible to realize the effective application in oily industrial circulating cooling water and oily industrial wastewater. A large number of experiments have also proved this point

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Prepare the oil displacing agent according to the following ratio:

[0049] 400Kg of sodium N-octyl p-iminobenzene sulfonate as the main agent, 0Kg of sodium bicarbonate (the pH value in the treated water quality is 8.9), 120kg of polyacrylic acid, 200kg of sodium sulfate, and 280Kg of deionized water. The total amount of oil displacement agent is 1000Kg.

[0050] The oil content of the cooling water system is 200mg / l. Add 100mg / l of this oil displacement agent into the cooling water system, and monitor the corrosion and adhesion rate of the A3 steel heat exchange test tube with the on-site monitoring heat exchanger. The results are shown in Table 1:

[0051] Corrosion rate (mm / a)

Embodiment 2

[0053] Prepare the oil displacing agent according to the following ratio:

[0054] 550Kg of sodium N-dodecyl p-iminobenzenesulfonate, 60Kg of sodium carbonate, 150kg of sodium tripolyphosphate, 220kg of sodium sulfate, and 20Kg of deionized water. The total amount of oil displacement agent is 1000Kg.

[0055] The oil content in industrial treatment wastewater is 800mg / l. Add 100 mg / l of this oil displacement agent into the cooling water system, and the analysis results of the oil displacement effect are shown in Table 2:

[0056] Dirty oil content (mg / l)

Embodiment 3

[0058] Prepare the oil displacing agent according to the following ratio:

[0059] N-octadecyl sodium iminobenzenesulfonate is 420Kg, sodium bicarbonate 50Kg (recirculating water system PH=7.2 needs to add a certain amount of alkali), hydroxyethylidene diphosphonic acid 180kg, sodium sulfate 260kg, remove Ionized water 90Kg. The total amount of oil displacement agent is 1000Kg.

[0060] Oil leaked from the primary cooling water system of the refinery, with an oil content of 320mg / l. Add 100mg / l of this oil-displacing agent into the cooling water system, and monitor the corrosion and adhesion rate of the A3 steel heat exchange test tube with the on-site monitoring heat exchanger. The results are shown in Table 3:

[0061] Corrosion rate (mm / a)

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Abstract

This invention relates to an oil displacement agent for oil-containing industrial circulation water and oil-containing waste water. With the total weight of the components as 100%, it comprises: main component(N-alkyl C8-24 p-imidogen benzene sulfonate anion surfactant)38%-62%, pH regulator(basic salt or alkaline) 0-12%, potentiating agent(chelant of calcium and magnesium ions) 7%-21%, reinforcing agent(neutral salt) 18%-30%. This invented oil displacement agent for oil-containing industrial circulation water and oil-containing waste water application has benefits of small amount, good oil displacement effect, non-toxic and environmental friendly, and easy biological degradation. Besides, the oil displacement agent has a synergic reinforcing effect on water treatment etching and deposition inhibition agent.

Description

technical field [0001] The invention relates to an oil-displacing agent, in particular to an oil-displacing agent mainly used in oil-containing industrial circulating water and oil-containing wastewater systems. Background technique [0002] There are often oil leaks in the industrial circulating water and waste water of oil refineries. The leaked oil adheres to the surface of metal equipment, which reduces the heat transfer efficiency of the equipment or makes it difficult for the sewage to meet the standard; the oil film covers the surface of the circulating water, and the oxygen concentration in the water drops. Anaerobic bacteria The reproduction speed increases, the total number of heterotrophic bacteria is high, the bacterial metabolism causes the water quality to decline, and the corrosion rate of equipment increases; oil products and their sulfides make the active ingredients of biocides and corrosion and scale inhibitors added to industrial circulating water invalid....

Claims

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Application Information

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IPC IPC(8): C02F5/10C09K8/04
Inventor 杨岳陈萍刘永军刘志花王树勖马光伟
Owner PETROCHINA CO LTD
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