Detection device, and detection method for hydrogen sulfide in oil product

A detection device and technology for hydrogen sulfide, which are used in material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials, etc., can solve problems such as the inability to detect hydrogen sulfide with low content.

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defect that the hydrogen sulfide with low content in oil cannot be detected in the prior art, and provide a detection device and detection method to detect hydrogen sulfide with low content in oil

Method used

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  • Detection device, and detection method for hydrogen sulfide in oil product
  • Detection device, and detection method for hydrogen sulfide in oil product
  • Detection device, and detection method for hydrogen sulfide in oil product

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preparation Embodiment 1

[0037] Take 1L of hydrocracked jet fuel (provided by Maoming branch of Sinopec Corporation, mercaptan sulfur content (calculated as sulfur) is not more than 1μg / g), replace the air with nitrogen, and replace it with nitrogen. Hydrogen sulfide (generated by the reaction of dilute sulfuric acid and calcium sulfide) is injected into jet fuel. The hydrogen sulfide content (in terms of sulfur) is 10 μg / g measured by potentiometric titration.

[0038] Under the protection of nitrogen, the above-mentioned jet fuel containing 10μg / g of hydrogen sulfide is diluted 200 times to a hydrogen sulfide content of about 0.05μg / g (the dilution liquid is the above-mentioned hydrocracked jet fuel that has been replaced with nitrogen for clean air). The thus prepared sample containing about 0.05 μg / g hydrogen sulfide is used as the test sample of the present invention.

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Abstract

The invention provides a detection device, and a detection method for hydrogen sulfide in an oil product. By the detection device and the detection method, the oil product can be sampled under the condition of isolating the air, so that the hydrogen sulfide can be prevented from escaping from the oil product to the air; furthermore, the hydrogen sulfide can be prevented from being oxidized by oxygen in the air; therefore, a small amount of hydrogen sulfide can be detected; and the detecting range of petroleum products is expanded.

Description

Technical field [0001] The invention relates to a detection device and a detection method of hydrogen sulfide in oil. Background technique [0002] Hydrogen sulfide in petroleum products easily causes the corrosive indicators (silver flake corrosion level, copper flake corrosion level) of oil products to fail, so it is regarded as a hazardous substance. [0003] Because hydrogen sulfide is unstable in oil, it is easy to escape from the oil, and it is also easy to undergo chemical reactions (such as being oxidized by the oxygen dissolved in the oil or being affected by light) to be converted into other sulfur species. Therefore, The detection of hydrogen sulfide is very difficult. [0004] At present, people usually use lead acetate method to qualitatively detect hydrogen sulfide in light oil products (such as gasoline, jet fuel and diesel). During testing, place the wetted lead acetate test paper on the mouth of the test bottle (tube) containing the light oil sample. The test bottl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 潘光成李涛吴明清陶志平张小云
Owner CHINA PETROLEUM & CHEM CORP
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