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Additive for desulfurizing cleaning agent and use thereof

An additive and cleaning agent technology, applied in the field of sulfur removal cleaning agent additives, can solve the problems of jet fuel silver flake corrosion, unqualified and other problems, and achieve the effects of rapid removal, thorough removal, and simple and easy cleaning method.

Inactive Publication Date: 2012-04-11
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These substances are also sensitive substances to the corrosion of jet fuel silver sheets. Jet fuel generally contains a small amount of mercaptans (generally, the sulfur content of mercaptans is lower than 10ug / mg), so when the dissolved elemental sulfur reaches a certain amount, it will cause jet Corrosion of fuel silver sheet is unqualified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take the skin scraps from the tank car, wash them with conventional cleaning agents, put them into jet fuel after cleaning, and let them stand at 20°C for 24 hours. Measure the silver flake corrosion test of jet fuel, and the corrosion level is >3.

[0025] Oxidizing agent: ammonium percarbonate, chelating agent: EDTA, corrosion inhibitor: o-xylenethiourea, activator: citric acid, each component is respectively 75%, 8%, 5%, 12% according to weight percentage, after mixing Additives are produced. Get the same weight of tank car skin scraps, add the additive in the conventional cleaning agent according to 3% of the total amount (the total weight of the additive and the conventional cleaning agent), and then add the cleaning agent and water with the additive at a concentration of 10% (that is, add the additive The weight of the cleaning agent accounts for 10% of the total weight of the cleaning agent added with the additive and water) to obtain a mixed solution for cleanin...

Embodiment 2

[0027] Oxidizing agent: hydrogen peroxide, chelating agent: EDTA, corrosion inhibitor: hydroxyquinoline, activator: citric acid, each component is respectively 78%, 6%, 4%, 12% according to the weight percentage, and it is prepared after mixing additive. Take the same weight of tank car skin scraps, add the prepared additive to the cleaning agent according to the content of 15% of the total weight of the cleaning agent after adding the additive, and then mix it with water at a concentration of 5% to obtain a mixed solution for cleaning. Put jet kerosene into it after cleaning, and let it stand at 25°C for 24 hours, measure the silver flake corrosion test of jet kerosene, and the result is that the corrosion level is 0;

Embodiment 3

[0029] Take the skin scraps from the tank car, clean them with a conventional cleaning agent, put them into jet fuel after cleaning, and let them stand at 30°C for 56 hours. Measure the silver flake corrosion test of jet fuel, and the corrosion level is >3;

[0030] Get oxidizing agent: hydrogen peroxide, chelating agent: NTA, corrosion inhibitor: o-xylenethiourea, activator: gluconic acid, each component is respectively 76%, 7%, 3%, 4% by weight percentage, makes additive. Take the same weight of tank car skin scraps, add the prepared additive to the cleaning agent according to the content of 10% of the total weight of the cleaning agent added with the additive, and then mix it with water at a concentration of 5% to obtain a mixed solution for cleaning. After cleaning, put jet kerosene into it, and let it stand at 30°C for 56 hours to measure the silver flake corrosion test of jet kerosene, and the result is that the corrosion level is 0.

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PUM

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Abstract

The invention relates to a desulphurizing cleaning agent additive and application, and solves the problem that active sulfur in inner wall coat of a tanker vehicle for storing and transporting jet fuel pollutes the jet fuel. The desulphurizing cleaning agent additive comprises the following components in weight percentage: 75 to 78 percent of oxidant, 5 to 8 percent of chelating agent, 3 to 5 percent of corrosion inhibitor, and 9 to 17 percent of activating agent, wherein the oxidant is one of ammonium percarbonate, hydrogen peroxide and perboric acid soda; the chelating agent is EDTA and NTA; the corrosion inhibitor is one of ortho-xylene thiourea, hydroxyquinoline and MBT; and the activating agent is one of citric acid and gluconic acid. The desulphurizing cleaning agent additive can beapplied as an additive to preparing desulphurizing cleaning agent for the tanker vehicle for storing and transporting the jet fuel. The cleaning agent added with the additive can thoroughly and quickly clean ferrous sulfide on the inner wall of the tanker vehicle, has no corrosion to equipment, can ensure that the stored and transported jet fuel is not influenced by external corrosion products, and is qualified to erode sliver sheets; moreover, the cleaning agent added with the additive has no biological toxicity, and does not generate impact on a sewage treatment plant.

Description

technical field [0001] The invention relates to a desulfurization cleaning agent additive for cleaning storage and transport jet fuel tank cars and its application. Background technique [0002] With the continuous increase of crude oil consumption, domestic crude oil can no longer meet the needs of the domestic market, and many companies have begun to import foreign crude oil. However, foreign crude oil, especially the crude oil in the Middle East, is deteriorating day by day, showing a trend of high acid, high sulfur, and high water content, which makes the corrosion in the oil tank more serious. The corrosion of the crude oil storage tank not only shortens the normal service life of the oil tank, but also the corrosion products will cause catalyst poisoning in the subsequent refining process after entering the oil product, which will have a negative impact on the weight of the refined oil. Cause environmental pollution, and may cause major fire and explosion accidents, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G27/00C10G27/04
Inventor 钱建华刘琳马文彬何国庆邢锦娟王长干谭立阳高传奎
Owner BOHAI UNIV