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Simulated nuclear magnetic resonance analysis system and applications thereof

A nuclear magnetic resonance and analysis system technology, applied in the direction of using nuclear magnetic resonance for analysis, etc., to achieve the effect of expanding the scope of application

Pending Publication Date: 2018-05-25
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Obviously, laboratory NMR analyzers cannot solve the above problems

Method used

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  • Simulated nuclear magnetic resonance analysis system and applications thereof
  • Simulated nuclear magnetic resonance analysis system and applications thereof
  • Simulated nuclear magnetic resonance analysis system and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 A kind of simulation nuclear magnetic resonance analysis system

[0052] The structural representation of the simulation nuclear magnetic resonance analysis system, see figure 1 , including nitrogen storage device with valve 1, sample tank with heating device 2, Aspect AI-60 online nuclear magnetic resonance analyzer 3, waste oil tank 4, cleaning oil tank with heating device 5, circulation pump 6, three Through valve 7 and 8, and pipeline 9; Wherein, nitrogen storage device 1, sample tank 2, three-way valve 7, on-line nuclear magnetic resonance analyzer 3, three-way valve 8 and waste oil tank 4 are sequentially connected through pipeline 9, cleaning oil Tank 5, circulation pump 6, three-way valve 7, on-line nuclear magnetic resonance analyzer 3 and three-way valve 8 form a closed circuit through pipeline 9; It is connected with the circulation pump 6, and the sample outlet of the online nuclear magnetic analyzer 3 is respectively connected with the waste o...

Embodiment 2

[0055] Example 2 Application of Simulation NMR Analysis System in Offline Analysis of Crude Oil Samples

[0056] Utilize the simulated nuclear magnetic resonance analysis system of embodiment 1, analyze the crude oil sample offline, the specific operation steps are:

[0057] I. Shimming

[0058] Use aviation kerosene as the cleaning oil, add 5L of cleaning oil to the cleaning oil tank 5, heat to 70±5°C, switch the three-way valves 7 and 8, and make the cleaning oil tank 5, circulation pump 6 and Aspect AI-60 online NMR The resonator 3 constitutes a closed circuit through the pipeline 9, and the circulation pump is turned on, and the cleaning oil circulates between the cleaning oil tank 5 and the nuclear magnetic resonance instrument 3, and the reference test is carried out to find the nuclear magnetic signal. Because the conditions are not met, shimming is carried out Operation, until the magnetic field of the nuclear magnetic resonance analyzer is stable;

[0059] II. Deter...

Embodiment 3

[0071] Example 3 Application of Simulated NMR Analysis System in Offline Analysis of Hydrogenated Diesel Raw Material Samples

[0072] Using the simulated nuclear magnetic resonance analysis system of Example 1, the hydrogenated diesel raw material sample was analyzed offline according to the same steps as in Example 2, except that the test sample was a hydrogenated diesel raw material.

[0073] In addition, the laboratory uses a varioEL-cube hydrocarbon analyzer to measure the carbon and hydrogen contents of the same batch of samples, and the analysis standard is SH / T0656-1998.

[0074] The results of the two methods are shown in Table 4.

[0075] Table 4 The carbon content and hydrogen content of hydrogenated diesel feedstock determined by two analytical methods

[0076]

[0077]

[0078] a : Carbon content standard deviation value=2.4; b : hydrogen content standard deviation value = 0.78.

[0079] The results in Table 4 show that the carbon content and hydrogen ...

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Abstract

The present invention provides a simulated nuclear magnetic resonance analysis system, which comprises a nitrogen storage device 1 with a valve, a sample tank 2 with a heating device, an online nuclear magnetic resonance analyzer 3, a waste oil tank 4, an oil cleaning tank 5 with a heating device, a circulation pump 6, three-way valves 7 and 8, and a pipeline 9. The invention further provides applications of the simulated nuclear magnetic resonance analysis system in off-line analysis of petroleum products in the petrochemical industry, wherein the specific operation steps comprise shimming, determining, and cleaning. According to the present invention, with the simulated nuclear magnetic resonance analysis system, the online NMR analyzer can be used in the off-line manner, the upper limitof the type of the analyzed sample during the online use is broken through, the use scope of the NMR analyzer is expanded, the applications of the NMR analyzer are flexible, and the utilization rateof the NMR analyzer is increased.

Description

technical field [0001] The invention belongs to the fields of petrochemical and analytical chemistry, and in particular relates to a simulation nuclear magnetic resonance analysis system and its application in off-line analysis of oil products in the petrochemical industry. Background technique [0002] With the large scale of my country's petrochemical equipment and the improvement of the overall technical equipment level, with the increasing pursuit of energy saving, quality improvement, pollution control and emission reduction, and safe production, advanced control represented by multivariable predictive control is adopted. Technology (APC) and optimization control technology (RT-OPT) with process real-time optimization as the core to improve the operation and control level of production equipment has become a hot topic in my country's petrochemical enterprises today. These control methods are inseparable from quality parameters, which are derived from the composition and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08
CPCG01N24/08Y02A90/30
Inventor 覃伟中罗重春王忠徐盛虎李舜王军王琤徐燕平王志慧
Owner CHINA PETROLEUM & CHEM CORP
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