Chromatographic device and method for determining sulfide in gas materials

A technology for gas materials and chromatographic devices, which is used in measurement devices, material separation, and analysis of materials, etc., can solve the problems of sulfur interference, inability to separate and detect, and achieve the effect of reducing manual operation errors.

Inactive Publication Date: 2011-12-28
TAIYUAN UNIV OF TECH
View PDF12 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] One of the technical problems to be solved in the present invention is to reduce the high concentration of H in the gaseous material. 2 The analysis error caused by multiple dilutions of S and COS; the second problem is to solve the problem that the low concent...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Chromatographic device and method for determining sulfide in gas materials
  • Chromatographic device and method for determining sulfide in gas materials
  • Chromatographic device and method for determining sulfide in gas materials

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0030] In order to solve the deficiencies in the prior art, the present invention provides a chromatographic device for determining sulfide in gas materials, which is composed of a sampling system, a chromatographic system, a detector and an output system.

[0031] The sampling system includes two injectors, which are connected in parallel. The first injector 2 is a micro-sampler, such as a packed column injector, a capillary column injector and a large-diameter capillary column splitless injector. The invention adopts a packed column sampler for constant analysis of gas sulfide components; the first sampler 3 is a six-way valve quantitative sampler for trace analysis of gas sulfide components; the carrier gas is supplied by the first Switching valve 1 connects the two injectors.

[0032] Two chromatographic channels are arranged in the chromatographic system. The first chromatographic channel 12 is connected to the sampling system through the second switching valve 4, and its g...

specific Embodiment approach 2

[0040] Implement a kind of assay method of the chromatographic device that is used to measure sulfide in the gas material of the present invention, its assay method is as follows:

[0041] 1) Use the first switching valve 1 to connect the gas path with the first sampler 2, and then use the second switching valve 4 to connect the first sampler 2 to the second chromatographic column 7, and pass through the first sampler 2 to The sample gas is injected into the gas path, and the sample gas enters the second chromatographic column 7 for separation, and the separated H 2 S and COS pass through the detector 9 successively, and the measurement results are output through the signal output line 10 and the chromatographic workstation 11, which can be completed in 6 minutes.

[0042] 2) Use the first switching valve 1 to connect the gas path with the first sampler 2, and then use the second switching valve 4 to connect the first sampler 2 to the gas pretreatment column 5, and pass the sa...

Embodiment 1

[0049] Determination of sulfide components in a coal pyrolysis gas by means of a trace sulfur analyzer.

[0050] Coal type: Hulunbeier lignite; weight: 20.003g; particle size 2 S and COS content, the content of organic sulfur (such as mercaptan, sulfide, carbon disulfide and thiophene, etc.) in the gas was measured by TCP column, the results are shown in Table 2;

[0051] Table 2 The content and precision of each sulfur component in lignite pyrolysis gas

[0052]

[0053] It can be seen from Table 2 that the analysis and determination of H in Hulunbeier lignite pyrolysis gas 2 When the content of S and COS is high, it is necessary to dilute the sample gas by more than 1000 times due to its high content, and the human operation error is very large; while the content of organic sulfur (such as mercaptan, sulfide, carbon disulfide and thiophene, etc.) in the gas is very low, coal heat High concentration of H in solution gas 2 S and COS interfere a lot with mercaptans and thi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A chromatographic device for determining sulfide in gas materials and its determination method, comprising a first sampler and a second sampler connected in parallel between the first switching valve and the second switching valve to form a sampling system; the second switching valve A first chromatographic channel and a second chromatographic channel are connected in parallel between the valve and the detector to communicate with the detector respectively to form a chromatographic system. The determination method connects the first sample injector with the first switching valve, connects the first sample injector with the second chromatographic channel through the second switching valve, and measures the content of H2S and COS; The device is connected with the first chromatographic channel to measure the content of each component of the organic sulfide. The chromatographic device of the present invention is simple, quick and accurate to measure the content of high-concentration H2S, COS and trace organic sulfide components in gas materials, and can be used for scientific research experiments with small gas production, and can also be used for various coal pyrolysis gases and coalbed methane in industry. and gas determination of natural gas.

Description

technical field [0001] The invention relates to a method for separating and quantitatively detecting and analyzing the components of sulfide in gas materials using a chromatographic device. The device and method are mainly applied to the components of sulfide in various coal pyrolysis gas, coal bed methane and natural gas and other gas materials. determination. Background technique [0002] With the sharp rise in oil prices, coal-to-oil and coal-to-gas technologies have attracted the attention of the energy and chemical industry again. Coal resources are abundant and cheap, providing sufficient raw materials for the development of various coal quality-enhancing processing technologies. Among them, the coal pyrolysis gas produced during the coal upgrading process without purification and other treatment, also known as raw coal gas, contains high H 2 S (content in 1000-6000mg / m 3 ) and COS (content in 50-400 mg / m 3 ) and relatively low forms of sulfur such as thiols, thioet...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N30/20G01N30/14
Inventor 李香兰张永发张国杰孙亚玲崔新涛
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap