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Method for simultaneously detecting hydrogen sulfide and thiol in crude oil by using photoelectric double signals and detector thereof

A dual-signal, hydrogen sulfide technology, used in instruments, measuring devices, scientific instruments, etc., to achieve the effect of strong selectivity, simple structure and accurate detection

Inactive Publication Date: 2010-08-04
中华人民共和国辽宁出入境检验检疫局
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Problems solved by technology

However, so far there is no related report on the method and detector for the simultaneous detection of hydrogen sulfide and mercaptans in crude oil using catalytic luminescence and electrochemical signals on the surface of nanomaterials

Method used

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  • Method for simultaneously detecting hydrogen sulfide and thiol in crude oil by using photoelectric double signals and detector thereof
  • Method for simultaneously detecting hydrogen sulfide and thiol in crude oil by using photoelectric double signals and detector thereof

Examples

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experiment example 1

[0015] Experimental example 1: take Saudi ultra light crude oil as experimental sample, the content of the hydrogen sulfide measured with the method for embodiment is 1.35% (m / m), the detected value of GOST P 50802-95 gas chromatography is 1.39% (m / m ); The content of the mercaptans measured by the method of the embodiment is 0.13% (m / m), and the detection value of GOST P 50802-95 gas chromatography is 0.14% (m / m).

experiment example 2

[0016] Experimental example 2: take Ecuador crude oil as experimental sample, the content of the hydrogen sulfide measured with the method for embodiment is 2.17% (m / m), the detected value of GOST P 50802-95 gas chromatography is 2.20% (m / m); The content of mercaptan determined by the method in the examples is 0.29% (m / m), and the detection value of GOST P 50802-95 gas chromatography is 0.31% (m / m).

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Abstract

The invention discloses a method for simultaneously detecting hydrogen sulfide and thiol in crude oil by using photoelectric double signals and a detector thereof. The invention has the advantages of simple structure, easy operation, low operating cost (using air as the carrier gas), favorable stability and reproducibility, and high detection efficiency and precision. The nano catalysis luminescent detector is used for detection; the nano material is cerium oxide / aluminum oxide composite material, and cerium oxide accounts for 10-30% of the total mass of the composite material; the detection wavelength is 400-460 nm; the heating temperature range for the nano material is 200-300 DEG C; the flow rate of the carrier gas is 20-200 ml / min; a voltage is applied to both ends of the nano material; and the current value is taken as the detection signal. Compared with the prior art, the detector is characterized in that both ends of the nano semiconductor metal oxide are respectively provided with a positive electrode and a negative electrode, and a current output and photoelectric signal conversion device between the positive electrode and the negative electrode is connected with an electric signal detection circuit.

Description

Technical field: [0001] The invention relates to a method and detection equipment for detecting hydrogen sulfide and mercaptan in crude oil, especially a method and detection equipment with simple structure, easy operation, low operating cost (using air as carrier gas), good stability and reproducibility, A photoelectric dual-signal simultaneous detection method and detector for hydrogen sulfide and mercaptan in crude oil with high detection efficiency and precision. Background technique: [0002] Sulfur content in crude oil refers to the total amount of elemental sulfur and its derivatives present in crude oil, expressed in mass fraction, including elemental sulfur, active sulfide and inactive sulfide. Active sulfides include hydrogen sulfide, mercaptan, sulfur dioxide, sulfonic acid, acidic sulfate, etc., which can cause corrosion to metal equipment such as storage and transportation equipment and oil pipelines; although inactive sulfides (including sulfide, disulfide, thi...

Claims

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Application Information

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IPC IPC(8): G01N21/76G01N21/01
Inventor 刘名扬王潍平姜伟周新贾洪祥
Owner 中华人民共和国辽宁出入境检验检疫局
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