High-base-number naphthenic acid composite calcium-magnesium detergent, preparation method thereof and lubricating oil composition

A high base value naphthene and detergent technology, which is applied in lubricating compositions, additives, petroleum industry, etc., can solve the problems of slow development and poor cleaning performance, and achieve low ash content, good acid neutralization ability, and high base value Effect

Active Publication Date: 2015-07-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Naphthenate is a kind of detergent that appeared earlier in history. In the early days, due to its poor cleaning performance, it has been developing slowly.

Method used

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  • High-base-number naphthenic acid composite calcium-magnesium detergent, preparation method thereof and lubricating oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]Add 150 milliliters of xylenes in the reactor, 35 grams of 150SN neutral oils, 10 grams of water, 10 grams of calcium oxide, 65 grams of naphthenic acid (pure acid value 118mgKOH / g, acid content 72%), control reaction temperature at 60 ℃, after 60 minutes of neutralization reaction, neutral calcium naphthenate is generated. Add 15 grams of magnesium oxide, 20 grams of methanol, 10 grams of dodecylbenzenesulfonic acid, and 15 grams of ethylenediamine, control the reaction temperature to 55°C, and feed carbon dioxide at a ventilation rate of about 100ml / min. When the absorption rate of carbon dioxide reaches 90% of the theoretical value, add 15 grams of magnesia, and pass into carbon dioxide to carry out the secondary carbonation reaction. When the absorption rate of carbon dioxide reaches 90% of the theoretical value, the reaction ends. Heat up to 130°C for dealcoholization and water, then add solvent to dilute and centrifuge, put the centrifuged flash product into a dist...

Embodiment 2

[0042] Add 150 milliliters of xylenes in the reactor, 35 grams of 150SN neutral oil, 10 grams of water, 10 grams of calcium oxide, 65 grams of naphthenic acid (pure acid value 118mgKOH / g, acid content 72%), control reaction temperature at 50 ℃, after 60 minutes of neutralization reaction, neutral calcium naphthenate is generated. Add 15 grams of magnesium oxide, 20 grams of methanol, 10 grams of dodecylbenzenesulfonic acid, and 15 grams of ethylenediamine, control the reaction temperature to 50°C, and feed carbon dioxide at a ventilation rate of about 100ml / min. When the absorption rate of carbon dioxide reaches 90% of the theoretical value, add 15 grams of magnesia, and pass into carbon dioxide to carry out the secondary carbonation reaction. When the absorption rate of carbon dioxide reaches 90% of the theoretical value, the reaction ends. Heat up to 130°C for dealcoholization and water, then add solvent to dilute and centrifuge, put the centrifuged flash product into a dist...

Embodiment 3

[0044] Add 150 milliliters of xylenes in the reactor, 35 grams of 150SN neutral oils, 15 grams of water, 15 grams of calcium oxide, 65 grams of naphthenic acid (pure acid value 118mgKOH / g, acid content 72%), control reaction temperature at 60 ℃, after 60 minutes of neutralization reaction, neutral calcium naphthenate is generated. Add 15 grams of magnesium oxide, 15 grams of methanol, 6 grams of dodecylbenzenesulfonic acid, and 20 grams of triethanolamine, control the reaction temperature at 55 ° C, and feed carbon dioxide at a ventilation rate of about 100 ml / min, and the amount of feed reaches the theoretical value When the carbon dioxide absorption rate reaches 90% of the theoretical value, the reaction ends. Heat up to 130°C for dealcoholization and water, then add solvent to dilute and centrifuge, put the centrifuged flash product into a distillation bottle with a decompression facility, first raise the temperature to 120°C for atmospheric distillation, the heating rate i...

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Abstract

The invention provides a high-base-number naphthenic acid composite calcium-magnesium detergent, a preparation method thereof and a lubricating oil composition comprising the detergent. The preparation method of the high-base-number naphthenic acid composite calcium-magnesium detergent comprises the steps of mixing naphthenic acid, calcium oxide and / or calcium hydroxide with a solvent to have neutralization reaction, then adding magnesium oxide and / or magnesium hydroxide, introducing the carbon dioxide to have the carbonation reaction, adding an accelerant in the neutralization reaction and / or carbonation reaction, and collecting products. Compared with the traditional metal detergent product of calcium salt and magnesium salt and the corresponding lubricating oil composition, the high-base-number naphthenic acid composition and the lubricating oil composition containing the detergent have lower ash content, higher base number and better acid neutralization capacity, different problems in the compounding of different metal salt detergents can be avoided, the detergent of different calcium / magnesium ratios can be obtained, and the requirement of the top-grade lubricating oil can be met.

Description

technical field [0001] The invention relates to a high-basic naphthenic acid metal detergent, in particular to a high-basic naphthenic acid composite calcium-magnesium detergent and a preparation method thereof. Background technique [0002] Metal detergent is one of the main additives in internal combustion engine oil. Through solubilization, dispersion and neutralization in internal combustion engine oil, together with other additives, it can inhibit the formation of carbon deposits, varnish and sludge in oil products, and ensure the normal operation of the engine. . Naphthenate is a kind of detergent that appeared earlier in history, and its development has been slow in the early stage due to its poor cleaning performance. However, with the advancement of overbasic technology in recent years, the research and production of overbased naphthenates have also been developed accordingly. Using naphthenic acid obtained from lubricating oil fractions as raw materials, the tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M159/20C10M129/58C10N30/04
Inventor 李玲段庆华刘依农张耀
Owner CHINA PETROLEUM & CHEM CORP
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