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Solid phase extraction column for separating different hydrocarbon components in diesel oil and application method

A technology of solid phase extraction column and hydrocarbon components, which is applied in the direction of material separation, analysis materials, measuring devices, etc., can solve the problems of long time-consuming separation of olefins and low recovery rate of olefins, so as to improve separation efficiency and recovery rate of olefins, improve The effect of the detection rate

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

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Problems solved by technology

[0006] The purpose of the present invention is to provide a solid phase extraction column for separating different hydrocarbon components in diesel oil and a method for separating different hydrocarbon components in diesel oil with the column, which can solve the problems of long time-consuming separation of olefins from diesel oil and low recovery rate of olefins

Method used

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  • Solid phase extraction column for separating different hydrocarbon components in diesel oil and application method
  • Solid phase extraction column for separating different hydrocarbon components in diesel oil and application method
  • Solid phase extraction column for separating different hydrocarbon components in diesel oil and application method

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preparation example Construction

[0020] The above SiO 2 -Al 2 o 3 The preparation method of the stationary phase is as follows: drying silica gel at 100-200°C for 3-8 hours to obtain activated silica gel, and roasting alumina at 300-500°C, preferably 350-450°C for 2-6 hours to obtain activated alumina. Mix the activated silica gel and alumina according to the required ratio to get SiO 2 -Al 2 o 3 Stationary Phase.

[0021] Ag-SiO treated with water 2 The preparation method is as follows: add silver salt solution into silica gel, stir evenly and let it stand for 1-24 hours, preferably 3-10 hours, so that silver ions are evenly adsorbed on the surface of silica gel, and dry at 100-200°C for 1-10 hours to obtain Ag -SiO 2 Stationary Phase. Described silver salt is preferably silver nitrate. Take appropriate amount of Ag-SiO 2 Stationary phase, add water and mix well, let it stand for 12 to 24 hours to get water-treated Ag-SiO 2 .

[0022] The method for separating different hydrocarbon components in ...

example 1

[0037] The silica gel stationary phase and silica gel-alumina stationary phase loaded with silver ions described in the present invention are prepared.

[0038] Dry fine-pore silica gel at 150°C for 5 hours to obtain activated silica gel (SG), which is stored in a desiccator for later use. Activated alumina (SAL) was obtained by calcining neutral alumina at 400°C for 4 hours. Weigh SG and SAL in proportion, mix them evenly, and prepare a certain mass fraction of silica gel-alumina stationary phase. Put in a desiccator for later use.

[0039] Take 3g of silver nitrate and dissolve it in 50g of water to make a solution, take 50g of silica gel, add the silica gel to the silver nitrate solution while stirring, after stirring evenly, let it stand for 5 hours, and dry at 150°C for 5 hours to obtain a silver solution with a silver content of 3.8% by mass. Ag-SiO 2 stationary phase (ASG). Take out a part and weigh the mass accurately, add a certain weight of distilled water, shake...

example 2

[0041] The aromatic hydrocarbons, olefins and saturated hydrocarbons in the catalytic cracking diesel oil are separated by the solid phase extraction method of the present invention.

[0042] The upper column of the solid phase extraction column is filled with 1.5g of silica gel-alumina stationary phase with an alumina content of 15% by mass, and the lower column is filled with 1.5g of Ag-SiO with a water content of 8% by mass. 2 Stationary phase (ASG-1). Moisten with 1.5 mL of n-pentane, respectively.

[0043] Take 60 μL of catalytically cracked diesel oil with a distillation range of 180-350°C and add it to the column. Use 3 mL of n-pentane to wash the saturated hydrocarbon and olefin components to the lower column, and then separate the two columns. The upper column was washed with 4 mL of dichloromethane-ethanol solution with a volume ratio of 5:1 to obtain an aromatic hydrocarbon solution. The lower column was washed with 2 mL of n-pentane to obtain a saturated hydroca...

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Abstract

The invention relates to a solid phase extraction column for separating different hydrocarbon components in diesel oil. The solid phase extraction column is composed of an upper solid phase extraction column and a lower solid phase extraction column that are communicated. The stationary phase of the upper solid phase extraction column is a mixture of silica gel and aluminum oxide, wherein the content of aluminum oxide is 1-40% by mass, the stationary phase of the lower solid phase extraction column is silver ion loaded silica gel subjected to water adding treatment, and on the basis of silica gel, the silver content of the stationary phase is 1-12% by mass, and the water content is 4-15% by mass. The column can be used for separation of olefin components in diesel oil, and can solve the problems of long time and low olefin recovery rate in separation of olefin from diesel oil.

Description

technical field [0001] The invention relates to a solid phase extraction column for separating different types of hydrocarbon components in hydrocarbon compounds and an application method thereof, specifically, a solid phase extraction column for separating different types of hydrocarbon components in diesel oil and the application of the column to separate diesel oil methods for the different types of hydrocarbon components in the chemical and for the compositional analysis of the separated olefin components. Background technique [0002] Olefins are one of the products in the process of diesel processing and have a great impact on the quality of diesel. Therefore, it is of great significance to fully characterize diesel oil and understand its olefin content, type and monomer composition to optimize diesel processing scheme and control product quality. [0003] The structure and composition of diesel oil is complex, and the molecular weights of olefins and naphthenes are e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/60G01N30/02
Inventor 牛鲁娜刘泽龙田松柏张文祝馨怡蔡新恒
Owner CHINA PETROLEUM & CHEM CORP
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