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Chlorine-free high-base-number calcium sulfonate detergent and preparation method thereof

A technology of high basic value calcium sulfonate and detergent, applied in the directions of additives, petroleum industry, lubricating compositions, etc., can solve the problems of shortening, affecting the working performance of oil products, corrosion of steel parts, etc., and achieving good results

Pending Publication Date: 2021-06-18
安徽澳润新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, Cl - Hydrochloric acid is produced during the use of lubricating oil and grease, which not only corrodes steel parts, but also reduces the base value of the oil and increases the acid value, which affects the working performance of the oil, accelerates the aging of the oil, and leads to Loss and shortened service life

Method used

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  • Chlorine-free high-base-number calcium sulfonate detergent and preparation method thereof
  • Chlorine-free high-base-number calcium sulfonate detergent and preparation method thereof
  • Chlorine-free high-base-number calcium sulfonate detergent and preparation method thereof

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Embodiment 1

[0025] Add 40.4 parts of toluene, 0.6 parts of organic amine, 20 parts of base oil 150SN, and 2.4 parts of calcium oxide into the reactor at one time, raise the temperature of the reactor to 43°C, add 13 parts of alkylbenzenesulfonic acid, and add the acid for 55 minutes. After the acid was finished, the temperature of the reaction kettle was controlled at 55°C for 50 minutes. After the constant temperature is completed, the temperature of the reactor is lowered to 48°C, and 13.6 parts of the remaining calcium oxide are added to the reactor in 6 times, and the amount of carbon dioxide is fed in portions to match the amount of calcium oxide. After feeding carbon dioxide, raise the temperature of the reactor to 150°C, distill under reduced pressure, remove all solvents, depressurize until the flash point is qualified, stop the decompression, add an appropriate amount of diatomite filter aid for pressure filtration, and obtain chlorine-free high alkali value sulfonic acid Calcium...

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Abstract

The invention discloses a preparation method of a chlorine-free high-base-number calcium sulfonate detergent, which comprises the following steps: adding a solvent accelerant and 15% of the total amount of organic amine, base oil and inorganic calcium salt into a reaction kettle at one time, heating the reaction kettle to 40-45 DEG C, adding organic acid for 50-60 minutes, and after the acid addition is finished, controlling the temperature of the reaction kettle to be 50-60 DEG C and keeping the temperature for 50 minutes; reducing the temperature of the reaction kettle to 45-50 DEG C after the constant temperature is finished, adding the residual inorganic calcium salt into the reaction kettle for 6 times, and introducing carbon dioxide for 6-7 hours in a manner that the amount of carbon dioxide is matched with that of the inorganic calcium salt; and heating the reaction kettle to 150 DEG C after introducing the carbon dioxide, carrying out reduced pressure distillation, removing all solvents, reducing pressure until the flash point is qualified, stopping reducing pressure, adding a proper amount of filter aid, and carrying out filter pressing to obtain the chlorine-free high-base-number calcium sulfonate detergent finished product. According to the invention, organic amine is used for replacing inorganic salt to synthesize the Cl<->-free calcium sulfonate detergent, so that the market demand that novel or high-end lubricating grease is used for replacing middle-grade and low-grade lubricating grease is met.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil additives, in particular to a chlorine-free high-basic value calcium sulfonate detergent and a preparation method thereof. Background technique [0002] High base value calcium sulfonate detergent is the main additive for internal combustion engine oil. It has the characteristics of high base value, good rust resistance and strong acid neutralization ability. It is mainly used to prepare medium and high-grade internal combustion engine oil. The preparation of calcium sulfonate with high base number is also described in the prior art. For example, the Chinese invention patent whose application number is CN200410037885.9 discloses a preparation method of a high-basic calcium sulfonate lubricating oil detergent, using sulfonate, organic solvent, methanol, and calcium hydroxide as raw materials, rotating in high gravity Circulation is carried out in the bed packing layer, and the neutralizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M135/10C10M177/00C10N30/04
CPCC10M135/10C10M177/00C10M2219/046C10M2215/02C10M2203/102
Inventor 马金鹏李丹
Owner 安徽澳润新材料有限公司
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