Method for determining contents of asphaltine, colloid and wax

A method of determination, technology of asphaltene, applied in the determination of colloid and wax content, in the field of asphaltene, can solve the problems of inability to measure various content and components of wax, and achieve the effect of fast determination speed, simple determination method and low cost

Inactive Publication Date: 2011-06-15
武侯区巅峰机电科技研发中心
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects that the various contents and components of wa

Method used

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  • Method for determining contents of asphaltine, colloid and wax
  • Method for determining contents of asphaltine, colloid and wax
  • Method for determining contents of asphaltine, colloid and wax

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Embodiment

[0037] Colloids are generally contained in crude oil. Since colloids have anticoagulant effects, they will affect the crystallization of waxes and precipitate together with waxes. Therefore, before measuring the wax content, the colloids in crude oil must be removed first. The overall process of the present invention is as follows: first prepare activated coarse-porous silica gel; separate asphaltene from crude oil to obtain an oil sample, and calculate the content of asphaltene; insert absorbent cotton into the adsorption column, and activate the prepared activated Coarse-porous silica gel is added to the interior of the adsorption column, and then the oil sample is injected into the adsorption column to separate the colloid and petroleum ether, and calculate the content of the colloid; add phenyl-acetone to the obtained petroleum ether to obtain wax The solution was dried to obtain wax, and the wax content was calculated.

[0038] Wherein, the preparation of the activated co...

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Abstract

The invention discloses a method for determining the contents of asphaltine, colloid and wax, which is characterized by mainly comprising the following steps of: preparing activated macroporous silica gel; separating asphaltine from crude oil to obtain an oil sample, and calculating the content of the asphaltine; plugging absorbent cotton into an adsorption column and adding the prepared activated macroporous silica gel to the interior of the adsorption column, then injecting the oil sample into the adsorption column, separating colloid and petroleum ether out, and calculating the content of the colloid; and adding benzene-acetone to the obtained petroleum ether to obtain a wax solution, drying the wax solution to obtain wax, and calculating the content of the wax. The determination method provided by the invention is simpler, fast in determination speed and extremely accurate in the obtained content of the resultant asphaltine, the colloid and the wax, and accordingly, overcomes the defect the determination for the contents of the asphaltine, the colloid and the wax merely remains in theory at present, and thus, the method is quite practically significant.

Description

technical field [0001] The invention relates to a measuring method, in particular to a measuring method for asphaltene, colloid and wax content. Background technique [0002] Waxes are generally divided into paraffin wax, microcrystalline wax and amorphous paraffin wax. Paraffin wax is a mixture containing a variety of hydrocarbons. According to the carbon chain structure, paraffin wax mainly refers to C18-C30 normal alkanes, a small amount of isoparaffins with branched chains at the end of the carbon chain and a smaller amount of rings with long side chains. like hydrocarbons. Paraffin wax is solid at room temperature, with a molecular weight of about 160-500, and mainly exists in the straight-run fraction below 500°C. Microcrystalline wax is mainly a mixture of C30-C60 saturated hydrocarbons, including long-chain isoparaffins with branched chains at any position, a small amount of macromolecular normal alkanes and long side chain cyclic hydrocarbons, and its molecular st...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/42G01N31/02
Inventor 黄友华
Owner 武侯区巅峰机电科技研发中心
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