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Process for separating sterane and hopane form mother oil or rock extract by 10X molecular sieve

A technology of molecular sieves and extracts, applied in separation methods, chemical instruments and methods, solid adsorbent liquid separation, etc., can solve problems such as not seeing

Active Publication Date: 2011-02-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In China, Xiong Yongqiang et al. have enriched horanes in special samples from the Karamay Oilfield, but the separation of steranes and horanes using 10X molecular sieves is still a blank, and so far, no reports on this aspect have been seen.

Method used

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  • Process for separating sterane and hopane form mother oil or rock extract by 10X molecular sieve
  • Process for separating sterane and hopane form mother oil or rock extract by 10X molecular sieve
  • Process for separating sterane and hopane form mother oil or rock extract by 10X molecular sieve

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Embodiment Construction

[0025] 1. With 60mg of crude oil or rock extract, fill the column with 6g of silica gel with a particle diameter of 40 microns, and wash with 15ml of n-hexane to prepare saturated hydrocarbons.

[0026] 2. Volatilize the solvent on a nitrogen blowing instrument, weigh the mass of saturated hydrocarbons, take ZSM molecular sieves about 100 times the mass of saturated hydrocarbons to fill the column, and wash with 20ml of isooctane to prepare cyclic hydrocarbons.

[0027] 3. Volatilize the solvent on a nitrogen blower, weigh the mass of the cyclic hydrocarbon, fill the column with a 10X molecular sieve about 300 times the mass of the cyclic hydrocarbon, and wash it with 80ml of n-pentane after 30 minutes to prepare fraction Z.

[0028] 4. After recovering and volatile fraction Z solvent, weigh its mass, take 200 times of 10X molecular sieve to fill the column, and wash with 10ml of sterane after 30 minutes.

[0029] 5. After the column packing in step 3 was blown dry with nitrog...

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Abstract

The invention relates to a molecular sieve separating and preparing method for sterane and diahopane. 60mg of crude oil or rock extracts are prepared, 6g of solica, the particle diameter of which is 40 micrometers, is used for filling columns, and 15ml of n-hexane is used for preparing saturated hydrocarbon in a leaching manner; ZSM molecular sieve with the weight about 100 times the weight of the saturated hydrocarbon is used for filling columns and 20ml of isooctane is used for preparing cyclic hydrocarbon in the leaching manner; 10X molecular sieve with the weight about 300 times the weight of the cyclic hydrocarbon is used for filling columns, and after 30 minutes, 80ml of n-pentane is used for preparing fractions; the solvent of fractions is recovered and volatilized, the fractions are then weighted, 10X molecular sieve with the weight about 200 times the weight of the fractions is used for filling columns and after 30 minutes 10ml is used for preparing sterane in the leaching manner; the filling materials in the third step is dried by the nitrogen, which are then extracted by the isooctane for 12 hours to get diahopane. The separation effect is good after the mass detection of a chromatograph, which is similar to the effect of the separation spectrogram exhibited in foreign countries and the operation of the enriching and separating method of diahopane is simple.

Description

Technical field: [0001] The invention relates to a method for separating and enriching steranes and horanes in crude oil or rock extracts by using 10X molecular sieves. Background technique: [0002] Steranes and horanes are very important biomarker compounds in crude oil and rock extracts. Through the study of steranes and horanes, information on the parent material type, depositional environment, and maturity of petroleum can be determined. The main target compounds for studies on oil source correlation and oil and gas secondary migration. With the development of monomer hydrocarbon stable isotope determination technology, oil and gas geochemists began to study biomarker compound isotopes in order to obtain more and more detailed information and solve problems that could not be solved in the past. To realize the determination of stable isotopes of steranes and horanes, it must be separated from petroleum or rock extracts to eliminate the interference of co-distilled compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07J75/00C07J9/00C07J63/00B01D15/26
Inventor 王汇彤魏彩云宋孚庆张水昌张大江张鼐
Owner PETROCHINA CO LTD
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