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New method for determining total sulfide amount in natural gas

A technology for sulfide and natural gas, applied in measuring devices, material analysis through electromagnetic means, instruments, etc., can solve the problems of increasing analysis complexity and analysis time, and achieve real-time online monitoring and accurate measurement

Inactive Publication Date: 2015-06-17
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, due to the limitation of detection sensitivity, it is usually necessary to use concentration and pre-enrichment methods to meet the requirements of the detection limit of substances, which increases the complexity and analysis time of the analysis.

Method used

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  • New method for determining total sulfide amount in natural gas
  • New method for determining total sulfide amount in natural gas
  • New method for determining total sulfide amount in natural gas

Examples

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Embodiment 1

[0022] Dopant-assisted photoionization ion mobility spectrometry negative ion mode for the determination of sulfide. figure 2 image 3 It is the background spectrum of dopant-assisted photoionization ion mobility spectrometry in negative ion mode and the determination spectrum of sulfide in five kinds of natural gas. In the background spectrum, a peak with a migration time of 8.33ms is mainly formed. The sulfides in the five kinds of natural gas all form a peak with a migration time of 9.55ms. According to the relationship between the peak area of ​​the peak at the migration time of 9.55ms and the total amount of sulfides in the natural gas in the analyte, the sulfide in natural gas can be realized. Determination of the total amount of matter.

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Abstract

The present invention provides a new method for rapidly and sensitively detecting the total sulfide amount in natural gas. According to the present invention, negative ion mode dopant assisted photo ionization ion mobility spectrometry is adopted as the base detection technology, purified air, oxygen or mixed gas of high-purity nitrogen and oxygen is adopted as carrier gas and drift gas, regent ions having oxidability are formed in the dopant assisted photo ionization source, and sulfides in natural gas are oxidized into the high-valence sulfides having the strong electronegativity so as to achieve the determination on the total sulfur content of the sulfides in the natural gas.

Description

technical field [0001] The invention relates to a new method for measuring the total amount of sulfide in natural gas. The method uses negative ion mode dopant-assisted photoionization ion mobility spectrometry as the basic detection technology, and purified air is used as carrier gas and drift gas. A photochemical reaction occurs in the reagent-assisted photoionization ionization source to form oxidizing reagent ions, which oxidize the sulfide in natural gas into the same high-valent sulfide, and realize the determination of total sulfur and sulfur content. Background technique [0002] The total amount of sulfide in natural gas is one of the indicators to measure the quality of natural gas. As a particularly important quality control parameter of natural gas, total sulfur is particularly important for the accuracy of its determination data. Sulfur-containing compounds will have a destructive impact on the transportation, storage and use of natural gas, so the content of s...

Claims

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Application Information

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IPC IPC(8): G01N27/64
Inventor 王卫国程沙沙李海洋彭丽英
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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