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Preparation method of concocted diesel oil

A diesel and blending technology, used in the petroleum industry, liquid carbon-containing fuels, fuel additives, etc., can solve problems such as low impact lubricity, impact on cold start, difficulty in ensuring oil pump and nozzle lubrication requirements, etc., to achieve good emission performance , the effect of good anti-wear performance

Active Publication Date: 2007-08-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

also pointed out that T 10 Too high affects cold start performance, T 90 Too low affects lubricity, T 50 +T 70 +T 90 +T 95 <1170℃ is difficult to guarantee the lubrication requirements of oil pumps and nozzles, but it does not specify how to choose the T value to meet the lubricity requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Two diesel components were selected: medium-pressure hydrogenated diesel component A with poor anti-wear property and conventional straight-run diesel oil B with good anti-wear property. Their chemical compositions are listed in Table 2. According to the calculation based on the PAH content of the two diesel components, the content of B must be less than 30m%, otherwise the PAH content of the blended diesel oil will exceed the standard (>5m%). Select 20m% of B and 80m% of A to blend diesel oil C, measure the kinematic viscosity of blended diesel oil C at 40°C, and calculate its total aromatic content, polycyclic aromatic hydrocarbon content, sulfur content and final boiling point. The HFRR wear scar diameter W calculated according to the above formulas (1) to (5) is 380 μm, which is less than 460 μm, which meets the requirements of the Class II diesel oil standard, and the other indicators also meet the Class II environmental diesel standard. Determine the proper mixing...

Embodiment 2

[0079] Two diesel components were selected: hydrogenated diesel D and 200-350°C conventional straight-run diesel B. Their chemical compositions are listed in Table 3. After calculation based on the sulfur content of diesel components D and B, it can be seen that the addition of B must be less than 40m%, so that the sulfur content of E will not exceed the standard (> 300μg / g). Choose to mix 35m% of B and 65m% of D to obtain the blended diesel oil E, and calculate the wear scar diameter W of the blended diesel oil E=422 μm (the calculation process is the same as in Example 1), and all indicators meet the requirements of Class II diesel oil , so as to determine the mixing ratio of the two diesel fractions to be 35:65.

[0080] Table 3 Chemical composition and anti-wear properties of diesel components B, D and blended diesel E

[0081] nature

Embodiment 3

[0083] Two hydrogenated diesel components, F and G, were selected (Table 4). According to the calculation based on the total aromatics content of the two diesel components, the amount of G must be below 70%, otherwise the total aromatics content exceeds the standard. Select to mix with 50m% G and 50m% F to obtain the blended diesel oil H, and calculate W=433 μm (the calculation process is the same as in Example 1), and each index meets the II diesel standard, thus the F and G can be determined A suitable blending ratio is 50:50.

[0084] Table 4 Chemical composition and wear resistance of diesel components F, G and blended product diesel H

[0085] nature

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Abstract

The inventon relates to a method for blending diesel, comprising following steps: (1) choosing two or more kinds of diesel, (2) blending with a certain ratio and getting blending diesel, testing the kinematic viscosity at 40 Deg. C for this blending diesel, testing or counting the sulfur content, total aromatic hydrocarbons content, polycyclic aromatics content and end point; (3) counting HFRR grinded spot diameter according to formula (1)- (5) in the instruction manual; (4) if the counted HFRR grinded spot diameter is in the intended range, the blending diesel will be needed diesel, and if not, repeating step (2)- (4) until the HFRR grinded spot diameter is in the intended range. The invention can conveniently blend diesel that meets II kind diesel standard.

Description

technical field [0001] The invention relates to a blending method of low-sulfur and low-aromatic content diesel oil with good wear resistance. Background technique [0002] Due to its good fuel economy, diesel is widely used in cars equipped with diesel engines, heavy vehicles, railway locomotives, agricultural machinery, ships, engineering and mining machinery. Among them, the quality requirements of light diesel oil for vehicles are much higher than other diesel oils. Due to the sulfur content of vehicle light diesel oil and the content of polycyclic aromatic hydrocarbons (total aromatics) and the harmful substances in the exhaust gas (SO 2 , NO X , CO, CO 2 , unburned hydrocarbons, etc.) and particulate matter (black soot) emissions, there is a corresponding relationship. Western countries such as Europe and the United States began to enforce low-sulfur diesel oil in the early 1990s, and its sulfur content is generally less than 0.05m%. The total aromatic content is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/04C10L10/08
Inventor 韦淡平兰晓艳齐浩
Owner CHINA PETROLEUM & CHEM CORP
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