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Heavy-thick oil gas chromatography sampling auxiliary device and detection method

An auxiliary device, chromatographic detection technology, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of heavy-heavy oil viscosity, affecting the detection effect, poor sample separation, etc., to achieve efficient separation, ensure quantity, and prevent clogging and the effects of pollution

Active Publication Date: 2022-01-21
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the high viscosity and poor fluidity of heavy-heavy oil, although the analysis of heavy-heavy oil components in the prior art with the help of gas chromatography often affects the detection effect due to poor separation of samples, and even cannot be carried out well. detection or detection failure

Method used

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  • Heavy-thick oil gas chromatography sampling auxiliary device and detection method
  • Heavy-thick oil gas chromatography sampling auxiliary device and detection method
  • Heavy-thick oil gas chromatography sampling auxiliary device and detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A kind of described heavy-heavy oil gas chromatography detection method, comprises the following steps:

[0053] (1) Pretreatment of heavy-heavy crude oil: seal 300 microliters of crude oil in a cell bottle, add 150 microliters of carbon disulfide; heat the water bath to 80°C under ultrasonic conditions with a power of 1000W, and keep the temperature constant for 20min; get the sample to be tested;

[0054] (2) Connect the gas chromatographic sampling auxiliary device to the gas chromatograph; wherein, the length of the chromatographic column without a stationary phase is 6m; the inner diameter of the chromatographic column without a stationary phase is 0.32mm; the chromatographic column without a stationary phase The model of chromatographic column is HP-5; The length of described quartz tube is 10cm; Described sealing element is polyimide resin;

[0055] (3) Set the chromatographic conditions, add the sample to be tested, the sample to be tested is processed by the sam...

Embodiment 2

[0057] A kind of described heavy-heavy oil gas chromatography detection method, comprises the following steps:

[0058] (1) Pretreatment of heavy-heavy crude oil: seal 350 microliters of crude oil in a cell bottle, add 200 microliters of chloroform; heat the water bath to 70°C under ultrasonic conditions with a power of 800W, and keep the temperature for 30min ; The sample to be tested is obtained;

[0059] (2) Connect the gas chromatographic sampling auxiliary device to the gas chromatograph; wherein, the length of the chromatographic column without a stationary phase is 5m; the inner diameter of the chromatographic column without a stationary phase is 0.1mm; the chromatographic column without a stationary phase The model of the chromatographic column is SPB-5; the length of the quartz tube is 20 cm; the sealing element is a sealing ring.

[0060] (3) Set the chromatographic conditions, add the sample to be tested, the sample to be tested is processed by the sample pretreatm...

Embodiment 3

[0062] A kind of described heavy-heavy oil gas chromatography detection method, comprises the following steps:

[0063] (1) Pretreatment of heavy-heavy crude oil: seal 300 microliters of crude oil in a cell bottle, add 150 microliters of carbon disulfide; heat the water bath to 90 ° C under ultrasonic conditions with a power of 1000 W, and keep the temperature for 10 minutes; get the sample to be tested;

[0064] (2) Connect the gas chromatographic sampling auxiliary device to the gas chromatograph; wherein, the length of the chromatographic column without a stationary phase is 6m; the inner diameter of the chromatographic column without a stationary phase is 0.53mm; the chromatographic column without a stationary phase The model of the chromatographic column is HP-5; the length of the quartz tube is 10 cm; the sealing element is polyimide resin.

[0065] (3) Set the chromatographic conditions, add the sample to be tested, the sample to be tested is processed by the sample pr...

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Abstract

The invention belongs to the technical field of oil gas detection, and particularly relates to a heavy-thick oil gas chromatography sampling auxiliary device and a detection method. The auxiliary device comprises a sample pretreatment device and a connecting device, the sample pretreatment device is connected with a sample inlet of the gas chromatograph through the connecting device, and the pretreatment device is a chromatographic column without a stationary phase. According to the method, the crude oil sample is analyzed by adopting the auxiliary device and the gas chromatograph. The content of effective components in heavy-heavy oil can be effectively detected, the number of chromatographic fingerprint peaks is guaranteed, and meanwhile the problems of blockage and pollution of a chromatographic column can be prevented.

Description

technical field [0001] The invention belongs to the technical field of oil and gas detection, and in particular relates to a heavy-heavy oil gas chromatography sampling auxiliary device and a detection method. Background technique [0002] Gas chromatography analysis technology is widely used in petrochemical analysis, and it is a very important means to identify oil sources and explain the origin of crude oil. [0003] For example, Chinese patent application CN111157648A discloses a gas chromatography rapid quantitative analysis method for saturated hydrocarbons in a crude oil sample. The method comprises the following steps: step 1, preparing a standard substance solution; step 2, weighing an appropriate amount of crude oil sample; step 3, adding a standard sample and a reagent to the crude oil sample to obtain a crude oil detection solution; step 4, loading the crude oil detection solution into The sample bottle is placed in an ultrasonic cleaner to oscillate and mix; st...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/16G01N30/30
CPCG01N30/02G01N30/16G01N30/06G01N30/30G01N2030/3007
Inventor 靳军米巨磊廖健德王剑侯读杰周妮马万云罗正江周基贤李二庭李际
Owner PETROCHINA CO LTD
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