Improving agent for improving low-sulfur diesel lubricating property and synthetic method of improving agent

A low-sulfur diesel oil and synthesis method technology, applied in the field of oil additives, can solve problems such as diesel engine corrosion, achieve the effects of increasing entanglement density, expanding application range, and improving lubricating effect

Active Publication Date: 2019-03-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the polar groups of diesel antiwear agents are all at the end of the molecular chain, such as long-chain fatty acids, etc., and the entanglement of the non-polar long chain belongs to unilateral entanglement, which requires a relatively...

Method used

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  • Improving agent for improving low-sulfur diesel lubricating property and synthetic method of improving agent
  • Improving agent for improving low-sulfur diesel lubricating property and synthetic method of improving agent
  • Improving agent for improving low-sulfur diesel lubricating property and synthetic method of improving agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of tung oil methyl ester: Add 800g tung oil, 160g methanol, and 8g potassium hydroxide into a 2L high-pressure reactor, and carry out stirring reaction. The reaction temperature is 60°C, and the reaction time is 20min. Glycerin product 76.2g, then the upper layer product was washed 3 times with 50°C hot water, and the washed product was distilled at 2000Pa and 60°C for 2h to obtain tung oil methyl ester biodiesel.

[0037] Put 250g of 4-pentenoic acid into the premix tank of the impingement flow reactor, and heat up to 90°C; then slowly feed tung oil methyl ester biodiesel 500g into the premix tank, and control the feed rate to the volume of the premix tank 0.5 times (that is, the feed volume space velocity is 0.5h -1 ), and at the same time, the mixed liquid in the premixing tank is delivered to the feed port of the impinging flow reactor through the circulating pump, and the rate of the circulating material is controlled to be 1.0 times the volume of the i...

Embodiment 2

[0042] The preparation process and operating conditions are the same as in Example 1, except that the feed rate of tung oil methyl ester is 1.0 times the volume of the premix tank (that is, the feed volume space velocity is 1.0h -1 ), while controlling the circulating material rate to be 2.0 times the volume of the impinging flow reactor (that is, the circulating material volume space velocity is 2.0 h -1 ), after the tung oil biodiesel was added, the reaction was continued at 130°C for 0.5h to obtain the improver product B, and the reaction molecular conversion rate was 92.6%. After testing, the acid value of the product is 129.8mgKOH / g, and the freezing point is -27.0°C.

Embodiment 3

[0044] The preparation process and operating conditions are the same as in Example 1, except that the feed rate of tung oil methyl ester is 0.2 times the volume of the premix tank (that is, the feed volume space velocity is 0.2h -1 ), while controlling the circulating material rate to be 0.5 times the volume of the impinging flow reactor (that is, the circulating material volume space velocity is 0.5h -1 ), after the tung oil biodiesel was added, the reaction was continued at 130°C for 2 hours to obtain the improver product C, and the reaction molecular conversion rate was 96.4%. After testing, the acid value of the product is 133.5mgKOH / g, and the freezing point is -27.5°C.

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Abstract

The invention relates to an improving agent for improving low-sulfur diesel lubricating property and a synthetic method of the improving agent. The method includes the steps: adding unsaturated monocarboxylic acid into a premixing tank of an impinging stream reactor, and heating the unsaturated monocarboxylic acid to reach the temperature of 80-100 DEG C; slowly leading tung oil biodiesel into thepremixing tank, conveying mixed liquid in the premixing tank into a feeding port of the impinging stream reactor by a circulating pump, enabling the mixed liquid to flow to a material impinging areathrough a flow guide cylinder at high speed to perform impinging reaction, controlling reaction temperature to be 110-150 DEG C, enabling the materials after impinging to reflow the premixing tank from discharging ports in two sides, conveying the materials into the feeding port of the reactor by the circulating pump to perform continuous operation, and continuing to run for a certain time after the tung oil biodiesel is completely added; performing pressure reduction distillation on the materials after reaction to obtain an improving agent product. The synthesized improving agent can improveabrasion resistance of low-sulfur diesel and low in condensation point, the blending proportion of the improving agent and the low-sulfur diesel is low, and the blended low-sulfur diesel can meet state V lubricating standards.

Description

technical field [0001] The invention belongs to the field of oil additives, and in particular relates to an improver for improving the lubricity of low-sulfur diesel oil and a synthesis method thereof. Background technique [0002] With the widespread use of diesel engines, the consumption of diesel is increasing year by year. However, a large amount of diesel consumption will inevitably lead to further aggravation of vehicle emissions of harmful substances. Due to the serious impact of emissions on the ecological environment, human health and economic development, governments of various countries have successively formulated strict emission regulations to limit the harmful emissions of diesel vehicles. With the implementation of the National IV and National V standards for diesel in my country, the sulfur content of diesel will drop below 10ppm, and desulfurized diesel has been implemented in domestic refineries. At present, sulfur reduction technologies such as hydrotrea...

Claims

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Application Information

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IPC IPC(8): C10G3/00C10L1/04C10L1/18C10L10/08
CPCC10G3/40C10L1/04C10L1/1817C10L10/08C10L2270/026Y02E50/10Y02P30/20
Inventor 李澜鹏程瑾曹长海李秀峥王宜迪雒亚东王领民乔凯
Owner CHINA PETROLEUM & CHEM CORP
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