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Method and detector for detecting sulfur content in petroleum naphtha by nano cataluminescence

A nano-catalysis, luminescence detection technology, applied in the direction of chemiluminescence/bioluminescence, analysis by chemical reaction of materials, etc., to achieve the effect of long service life, easy operation and low cost

Inactive Publication Date: 2010-07-14
中华人民共和国辽宁出入境检验检疫局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far there is no relevant report on the method and detector for the detection of sulfur content in naphtha by catalytic luminescence on the surface of nanomaterials

Method used

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  • Method and detector for detecting sulfur content in petroleum naphtha by nano cataluminescence
  • Method and detector for detecting sulfur content in petroleum naphtha by nano cataluminescence

Examples

Experimental program
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Effect test

Embodiment 1

[0014] The detector used is as figure 1 As shown: there is a quartz tube 1, an inlet 2 and a vent 3 are arranged on the quartz tube 1, a ceramic heating rod 4 is built in the quartz tube 1, and a nanomaterial 5 is coated on the outside of the ceramic heating rod 4, and the nanomaterial 5 is ZnO and Al 2 o 3 Nanocomposite materials, ZnO and Al 2 o 3 The mass ratio is 1:1.5~3.5. The centers of the sample inlet 2 and the vent 3 of the quartz tube 1 are all located on the axis of the quartz tube 1; the ceramic heating rod 4 is wound with a resistance wire 6 with an insulating outer layer outside the ceramic core 5, and is simultaneously Mix the nano material 5 and apply it on the outside of the resistance wire 6 as in the prior art; the quartz tube 1 is 2-3 cm long and 1-2 cm in inner diameter; the ceramic core 5 is 1-1.5 cm long and 0.2-0.4 cm in diameter.

[0015] The detection wavelength is 400-480nm, the nanomaterial heating temperature range is 300-400°C, air is used as ...

experiment example 1

[0017] Experimental example 1: 90 # In lead-free naphtha, the sulfur content determined by this method is 279.65 μg / g; the sulfur content determined according to ASTMD 4294-2008a "Standard Test Method for Determination of Sulfur Content in Petroleum and Petroleum Products by Energy Diffusion X-ray Fluorescence Spectrometry" It is 260 μg / g; according to ASTM D 5453-2009 "Standard Test Method for Determination of Sulfur Content in Petroleum and Petroleum Products by Ultraviolet Fluorescence Spectroscopy", the sulfur content measured is 291 μg / g.

experiment example 2

[0018] Experimental example 2: 93 # In lead-free naphtha, the sulfur content determined by this method is 193.69 μg / g, and the sulfur content determined according to ASTMD 5453-2009 "Standard Test Method for Determination of Sulfur Content in Petroleum and Petroleum Products by Ultraviolet Fluorescence Spectroscopy" is 200 μg / g .

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Abstract

The invention discloses a method and a detector for detecting sulfur content in petroleum naphtha by nano cataluminescence. The method and the detector are characterized in that the sulfur content in petroleum naphtha is detected by using a nano cataluminescence detector, wherein a nano material used by the detector is a nano-composite material comprising ZnO and Al2O3 in a mass ratio of 1:1.5-3.5; the detection wavelength is between 400 and 480nm; the heating temperature range of the nano material is between 300 and 400 DEG C; air serves as a carrier gas; and the flow rate of the carrier gas is between 10 and 100ml / min. A detected optical signal has a linear relationship with the sulfur content in the petroleum naphtha, so the sulfur content of the petroleum naphtha can be detected quickly and accurately, which overcomes the shortcomings of expensive instrument and equipment, long analysis time and bad accuracy in the conventional detection method. The detector has the advantages of simple structure, easy operation, low cost (tens of thousands yuan), strong selectivity, little operation cost, long service life, high sensitivity, good reproducibility and the like.

Description

Technical field: [0001] The invention relates to a method and detection equipment for detecting sulfur content in naphtha, especially a simple structure, easy to operate, using air as carrier gas, and does not need chemical reagents and H 2 , He and other high-purity gas carrier gases, a method and a detector for detecting sulfur content in naphtha with nano-catalysis and luminescence with low cost, good reproducibility and long service life. Background technique: [0002] The content of sulfur in naphtha (including elemental sulfur, active sulfide and inactive sulfide, such as: hydrogen sulfide, mercaptan, sulfur dioxide, sulfonic acid, acidic sulfate, sulfide, disulfide and thiophene, etc.) One of the most important indicators of vehicle emissions. Since the "National Standard for Unleaded Naphtha for Vehicles" (GB / T 17930) was promulgated in 1999, it has been revised three times. One of the most important changes is to reduce the sulfur content index from the original 10...

Claims

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Application Information

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IPC IPC(8): G01N21/76
Inventor 刘名扬王玫张海峰陈新戴华牟明仁
Owner 中华人民共和国辽宁出入境检验检疫局