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Rare earth heavy oil vanadium inhibitor

A technology of vanadium inhibitor and heavy oil, which is used in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of reducing the output and efficiency of gas turbines, uneven mixing of effects, inconvenient use, etc. Easier washable, easy-to-use effect

Inactive Publication Date: 2007-10-17
ENERGY RES INST OF JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing vanadium inhibitors at home and abroad are divided into two types: oil-soluble and water-soluble. Among them, the water-soluble dispersant is not easy to mix with heavy oil, so it needs a separate spray system when used, so it is inconvenient to use, and the effect is also due to mixing. affected by unevenness
Because the magnesium compounds used in oil-soluble dispersants are generally magnesium oxide and magnesium hydroxide, it is easy to absorb water and carbon dioxide in the air, resulting in gelation and surface crusting, and the formed magnesium vanadium compound is easy to form on the blades of the gas turbine. scale, thereby reducing the output and efficiency of the gas turbine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 1. Preparation of organic magnesium salt: Add 250kg of magnesium oxide, 80kg of sodium lauryl sulfate, 20kg of butenedioic anhydride and 1000kg of water into the reaction kettle, mix and stir evenly; slowly add ethanol, ice Mix 1000kg of acetic acid and naphthenic acid in a weight ratio of 1:1:1, stir and react at a constant temperature for 1-2 hours, transfer the above-mentioned reactants into another container, bubble with carbon dioxide for 5-8 hours, and then vacuum dry for later use ;

[0013] 2. Preparation of rare earth salts: Take 90kg of mixed rare earth oxides, add hydrochloric acid to dissolve them, then evaporate the solution in an evaporator to obtain rare earth chlorides, add 300-500kg of water to dissolve them, and put them into saponified 2 -Extract in 800kg of ethylhexyl monoethylhexyl phosphate, get the organic phase to obtain rare earth salt organic matter;

[0014] 3. Preparation of the finished product: Slowly add a mixture of naphthenic acid, kero...

Embodiment 2

[0016] In this embodiment, 60kg of mixed medium and heavy rare earth oxides, 180kg of magnesium oxide, 120kg of sodium lauryl sulfate, 15kg of butenedioic anhydride and 900kg of monoethylhexyl 2-ethylhexyl phosphate are taken, and they are prepared in the same manner as in Example 1. Obtain the vanadium inhibitor of the present invention.

Embodiment 3

[0018] In the present embodiment, 100kg of mixed medium and heavy rare earth oxides, 100kg of magnesium oxide, 60kg of sodium lauryl sulfate, 10kg of butenedioic anhydride and 1000kg of monoethylhexyl 2-ethylhexyl phosphate are taken, and they are prepared by the same method as in Example 1. Obtain the vanadium inhibitor of the present invention.

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Abstract

The invention discloses a rare-earth heavy oil vanadium inhibitor, which is produced by following materials by weight: 60-100 shares of mixing rare-earth, 100-250 shares of magnesia, 60-120 shares of sodium dodecyl sulfate, 10-20 shares of maleic anhydride and 800-1000 shares of 2-ethylhexyl hydrogen 2-ethylhexylphosphate. The inventive rare-earth heavy oil vanadium inhibitor can inhibit the vanadium corrosion at 1800 DEG C, resists to the high temperature oxidation capacity; has an ultra high alkali value, a strong neutralization and sulfur-fixing ability, can effectively reduce the discharge of the acidic gas such as sulfur dioxide, nitrogen oxide and etc and is beneficial to the environment protection; has powerful cleaning and dispersing functions; has a good oil-dissolving property and can be completely mixed with heavy oil, crude oil, and resid, widely used for gas turbine vanadium inhibitor which has the heavy oil as fuel. The dregs obtained after heavy oil burning becomes loose and easily for washing so as to obviously improve the gas turbine power and efficiency.

Description

technical field [0001] The invention relates to an anti-vanadium corrosion preparation, in particular to a rare earth-containing vanadium inhibitor for a gas turbine fueled by heavy oil. Background technique [0002] At present, the existing vanadium inhibitors at home and abroad are divided into two types: oil-soluble and water-soluble. Among them, the water-soluble dispersant is not easy to mix with heavy oil, so it needs a separate spray system when used, so it is inconvenient to use, and the effect is also due to mixing. affected by unevenness. Because the magnesium compounds used in oil-soluble dispersants are generally magnesium oxide and magnesium hydroxide, it is easy to absorb water and carbon dioxide in the air, resulting in gelation and surface crusting, and the formed magnesium vanadium compound is easy to form on the blades of the gas turbine. scale, thereby reducing the output and efficiency of the gas turbine. However, oil-soluble vanadium inhibitors have un...

Claims

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Application Information

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IPC IPC(8): C10L1/26C10L10/04C10L1/12C10L1/24C10L1/188
Inventor 饶国华熊继海范敏陈洪民鲁亦兵陈树
Owner ENERGY RES INST OF JIANGXI ACAD OF SCI
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