Test analysis method for rapidly determining four components of heavy oil

A rapid determination and analysis method technology, applied in the direction of weighing by removing certain components, preparation of test samples, etc., can solve problems such as poor separation effect, low recovery rate, overlapping components, etc., to achieve data stability and improve The effect of contrasting, thorough component overlap

Active Publication Date: 2022-05-31
SHAANXI YANCHANG PETROLEUM GRP
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  • Description
  • Claims
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Problems solved by technology

[0004] In order to solve the problem of poor separation effect, low recovery rate, long experimental process and component overlap caused by human judgment due to uneven pressure in the existing separation method, the purpose of the present invention is to provide A test and analysis method for rapid determination of the four components of heavy oil, which can completely separate the components and achieve rapid separation, with simple operation and good repeatability

Method used

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  • Test analysis method for rapidly determining four components of heavy oil

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Effect test

Embodiment 1

[0040] A test and analysis method for rapidly measuring the four components of heavy oil, specifically comprising the following steps:

[0041] Step 1. Preparatory work before the test:

[0042] 1) Install test equipment;

[0043] 2) Activation of Al2O3: take 300g of Al2O3 for neutral 100-mesh chromatography, activate it in a muffle furnace at 500°C for 6h, put it into a glass container after cooling, and add distilled water with 1% mass of Al2O3 , shake well and let it stand for 24 hours for later use;

[0044] 3) Prepare analytically pure n-heptane, analytically pure toluene and analytically pure anhydrous ethanol reagents for use;

[0045] Step 2. Select the hot high-fraction oil separated after the suspension bed hydrogenation as the heavy oil sample, heat it to 110°C, and stir well;

[0046] Step 3. Weigh samples with masses of 1.0108g and 0.9949g respectively and place them in clean centrifuge tubes, marked as m 1 ;

[0047] Step 4. 1) Add 30ml of pure hot n-heptane...

Embodiment 2

[0060] A test and analysis method for rapidly measuring the four components of heavy oil, specifically comprising the following steps:

[0061] Step 1. Preparatory work before the test:

[0062] 1) Install test equipment;

[0063] 2) Activation of Al2O3: take 500g of Al2O3 for neutral 200 mesh chromatography, activate it in a muffle furnace at 525°C for 6h, put it into a glass container after cooling, and add distilled water with 1% mass of Al2O3 , shake well and let it stand for 24 hours for later use;

[0064] 3) Prepare analytically pure n-heptane, analytically pure toluene and analytically pure anhydrous ethanol reagents for use;

[0065] Step 2. Select the vacuum residue as a heavy oil sample, heat it to 140°C, and fully stir it evenly;

[0066] Step 3. Weigh samples with a mass of 1.0664g and 1.0636g respectively and place them in a clean centrifuge tube, marked as m 1 ;

[0067] Step 4, 1) Add 40ml of analytically pure hot n-heptane at 65°C to each of the two centr...

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Abstract

The invention relates to a test analysis method for rapidly determining four components of heavy oil, which comprises the following steps of: dissolving a heavy oil sample more fully by adopting ultrasonic oscillation and hot solvent modes, separating by a centrifugal machine to obtain a mixed solution of asphaltene, saturated components, aromatic components and colloid, and eluting by using different solvents through a packed column in sequence to obtain the four components of the heavy oil. The method comprises the following steps: dissolving an asphaltene solution in a solvent, separating out a saturated component solution, an aromatic component solution and a colloid solution, putting a device containing the saturated component solution, the aromatic component solution, the colloid solution and the asphaltene solution into a vacuum drying oven to remove the solvent, and finally weighing and calculating to obtain the content of each component of the sample. According to the invention, the phenomenon that the sample is gathered and cannot be completely dispersed and dissolved is solved, the separation time is saved, the polarity principle of the solvent is utilized, the overlapping among the components is thoroughly blocked, multiple groups of tests can be simultaneously carried out, the data is stable, and the contrast of different samples is improved; the method has the characteristics of simplicity and convenience in operation, high test speed, good repeatability and high precision.

Description

technical field [0001] The invention relates to the technical field of petrochemical analysis, in particular to a test analysis method for rapidly measuring four components of heavy oil. Background technique [0002] At present, the reserves of crude oil resources in the world are continuously decreasing, while the international energy demand is still high. The rational utilization and deep processing of heavy oil can effectively improve the utilization rate of resources. Heavy oil has the characteristics of many types of compounds, high viscosity, and complex composition. The separation and analysis of its four components are of great significance for the improvement of processing technology and the selection of process conditions. [0003] The heavy oil is analyzed according to the group composition characteristics of the compounds, and its four components refer to saturates, aromatics, gums and asphaltenes. In the process of component separation, there will be some subst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N1/44
CPCG01N5/04G01N1/44
Inventor 王艳红高亚男姬鹏军李媛媛杜宁张生娟石欣赵静赵丽信赵怡时肖栋任烨牛维维李斌党宏伟
Owner SHAANXI YANCHANG PETROLEUM GRP
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