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Oil recovery

A vegetable oil and clean technology, applied in the petroleum industry, the recovery of polluted soil, the preparation of liquid hydrocarbon mixtures, etc., can solve the problems of chemicals harmful to the environment, expensive, low-level development, etc.

Inactive Publication Date: 2015-02-18
OTI GREENTECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently employed methods are relatively expensive and underdeveloped
This is especially true in the case of remediation of contaminated land, where mechanical removal of contaminated soil is often the only option; this operation is logistically expensive and complex
Alternative chemical methods exist, but they often have drawbacks, and the chemicals themselves can potentially harm the environment

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0037] Concentrates were produced by blending together the following components in the indicated volume ratios (vol / vol) in a stirred reactor: 50.0% corn oil;

[0038] 25% Polyoxyethylene Sorbitan Monopalmitate (Tween Nonionic surfactant ex Croda International pic; HLB=15.6, (CAS 9005-66-7)) and

[0039] 25% Polyethylene Glycol Sorbitan Trioleate (Tween Nonionic surfactant ex Croda International pic; HLB = 11.0; (CAS 9005-70-3)).

[0040] A sample of the concentrate described above was then diluted with water (60-70° C.) in a 250 ml beaker on a stirrer hot plate to produce a cleaning solution containing 1% by volume of the concentrate. Small galvanized steel test panels were then coated with heavy fuel oil before immersion in the cleaning solution. Oil removal from the test panels was monitored by visual inspection of the beaker contents at ten minute intervals until complete removal. At this stage, the test panels were removed and washed with cold water and found to be ...

Embodiment 2

[0042] Concentrates were created by blending the following components together in the volume ratios indicated (vol / vol) in a stirred reactor:

[0043] 50.0% corn oil;

[0044] 25.0% Rewoteric AM (capryl amphopropionate surfactant; ex Evonik Industries; HLB=c.14-15) and

[0045] 25% Polyethylene Glycol Sorbitan Trioleate (Tween Nonionic surfactant ex Croda International pic; HLB = 11.0; (CAS 9005-70-3)).

[0046] A sample of the concentrate described above was then diluted with water (60-70° C.) in a 250 ml beaker on a stirrer hot plate to produce a cleaning solution containing 1% by volume of the concentrate. Small galvanized steel test panels were then coated with heavy fuel oil before immersion in the cleaning solution. Oil removal from the test panels was monitored by visual inspection of the beaker contents at ten minute intervals until complete removal. At this stage, the test panels were removed and washed with cold water and found to be free of oil. For 0.17 g o...

Embodiment 3

[0048] Another concentrate was produced by blending together the following components in the indicated volume ratios (vol / vol) in a stirred reactor: 40.0% corn oil;

[0049] 30.0% Marlowet (castor oil ethoxylate (40EO) surfactant; ex Sasol Limited; HLB=c.15-16) and

[0050] 30.0% Rewoteric AM (octyl amphetamine propionate surfactant; ex Evonik Industries; HLB=c.14-15).

[0051] A sample of this concentrate was then diluted with water (60-70° C.) in a 250 ml beaker on a stirrer hot plate to produce a cleaning solution containing 1% by volume of the concentrate. Again, small galvanized steel test panels were then coated with heavy fuel oil before dipping into the cleaning solution. Oil removal from the test panels was monitored by visual inspection of the beaker contents at ten minute intervals until complete removal. At this stage, the test panels were removed and washed with cold water and found to be free of oil. In this case, it was found that the 1% solution achieved...

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Abstract

An aqueous cleaning solution for treating hydrocarbon-contaminated soil and for cleaning hydrocarbon-contaminated surfaces is provided. Suitably it is prepared by progressively diluting a concentrate comprising: i) 10-60% by volume of a first emulsifier; (ii) 10-60% by volume of a second emulsifier and (iii) 20-70% by volume of vegetable oil In a preferred embodiment the concentrate comprises a polyethylene glycol sorbitan trioleate, a polyoxyethylene sorbitan monopalmitate and corn oil with the two sorbitan molecules having different HLB-values.

Description

technical field [0001] The present invention relates to a cleaning solution for removing hydrocarbon contamination from dirty surfaces; in particular it relates to cleaning hydrocarbon residues from tankers, storage tanks, pipelines and other equipment working with hydrocarbons. Cleaning solutions are also used to separate oil from solids, water and emulsions during oil production, and to decontaminate contaminated soil, sand, beaches, rocks, etc. Background technique [0002] Whether drilling for oil, producing it, using ships, roads, trains or pipelines to transport refineries and petrochemicals, or storing them prior to use, one consequence of working with hydrocarbons on an industrial scale is the inevitable contamination of the associated equipment used. In addition, accidental spills during production and transportation are causing additional hazards of environmental pollution to land and sea throughout the world. Oil spills at sea can, inter alia, lead to general pol...

Claims

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Application Information

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IPC IPC(8): C10G1/04B01F17/00B03B9/02C11D3/382C09K23/00
CPCB01F17/0021C11D1/825C11D3/382C10G1/045C11D1/94C11D17/0008B09C1/02C09K23/42C09K23/34
Inventor J·L·瓦赫卢
Owner OTI GREENTECH GRP
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