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Evaluation method of contact agent for heavy oil contact cracking

An evaluation method and a technology of contact cracking, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as difficulty in online chromatographic analysis, difficulty in chromatographic separation analysis, difficulty in sampling and sample pretreatment, etc., to improve evaluation accuracy, Effects of reducing evaluation errors and sample volume, and preventing product loss

Active Publication Date: 2020-02-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for complex samples with a wide boiling range, due to the physical and chemical changes such as condensation, leakage, polymerization, and cracking of the components in the transfer pipeline, there are problems such as sampling and sample pretreatment, and chromatographic separation and analysis. Difficult to achieve online chromatographic analysis

Method used

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  • Evaluation method of contact agent for heavy oil contact cracking
  • Evaluation method of contact agent for heavy oil contact cracking
  • Evaluation method of contact agent for heavy oil contact cracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Completely dissolve the Shijiazhuang alkali residue with dichloromethane and immerse it on contact agent A. The weight ratio of dichloromethane, contact agent and heavy oil is 15:8:1, and then put the soaked contact agent A in a fume hood for 4h , And then placed in a drying oven at 115°C for 10 hours to make the dichloromethane evaporate completely to prepare the contact agent A loaded with heavy oil. Weigh 0.5 mg of contact agent A loaded with heavy oil in a sample cup, place it in a thermal cracker for reaction, and send the resulting gas phase product to a gas chromatograph for gas chromatographic analysis. The specific operating conditions are as follows:

[0070] Thermal cracker: 540℃, nitrogen flow rate is 55mL / min;

[0071] Gas chromatography: stainless steel superalloy high temperature column: 5m×530μm×0.15μm; EI ion source, ionization voltage 70eV; inlet temperature: 400℃, column flow rate: 5mL / min; split ratio (send: send): 10 :1; Oven temperature: 35°C at 15°C / ...

Embodiment 2

[0073] Completely dissolve the Shijiazhuang alkali slag with dichloromethane and immerse it on contact agent B. The weight ratio of dichloromethane, contact agent and heavy oil is 15:8:1, and then put the soaked contact agent B in a fume hood for 4 hours. Then, it was placed in a drying box and dried at 115° C. for 10 hours to completely evaporate the dichloromethane to prepare contact agent B loaded with heavy oil. Weigh 0.5 mg of contact agent B loaded with heavy oil in a sample cup, place it in a thermal cracker for reaction, and send the resulting gas phase product to a gas chromatograph for gas chromatographic analysis. The specific operating conditions are the same as in Example 1. The analytical chromatogram of the gas product of contact agent B loaded with heavy oil is shown in Figure 4 , The product distribution is shown in Table 2.

Embodiment 3

[0075] Completely dissolve the Shijiazhuang alkali residue with dichloromethane and immerse it on contact agent C. The weight ratio of dichloromethane, contact agent and heavy oil is 15:8:1, and then put the soaked contact agent C in a fume hood for 4h , And then placed in a drying oven at 115°C for 10 hours to completely evaporate the dichloromethane to obtain sample C. Weigh 0.5 mg of contact agent C loaded with heavy oil in a sample cup, place it in a thermal cracker for reaction, and send the resulting gas phase product to a gas chromatograph for gas chromatographic analysis. The specific operating conditions are the same as in Example 1. The analytical chromatogram of the gas phase product of contact agent C loaded with heavy oil is shown in Figure 5 , The product distribution is shown in Table 2.

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Abstract

The invention relates to an evaluation method of a contact agent for heavy oil contact cracking. The method comprises the following steps that: a contact agent loaded with heavy oil is putted into thesample cup of a thermal cracking instrument; the heavy oil and the contact agent are subjected to a contact cracking reaction in the thermal cracking instrument; and an obtained gas-phase product isfed into the chromatographic column of a gas chromatograph through the sample injection needle of the thermal cracking instrument so as to be subjected to gas chromatographic analysis. The method canbe used for the rapid evaluation of the contact agent.

Description

Technical field [0001] The present invention relates to a method for evaluating a contact agent for contact cracking of heavy oil. Background technique [0002] Crude oil resources worldwide are gradually becoming heavier and deteriorating. The increased oil production will mainly be heavy crude oil and heavy synthetic oil. From the analysis of crude oil reserves, low-sulfur crude oil accounted for 17% of the world's crude oil, sour crude oil accounted for 37.8%, and high-sulfur crude oil accounted for 58%. The world's crude oil has become increasingly sulphurized and heavy. [0003] Petroleum is a non-renewable resource, and the quality trend is heavy and inferior. However, the development of the world economy requires the production and processing of more petroleum and the provision of more liquid transportation fuels to meet the growing needs of the economy. In order to effectively alleviate this contradiction between supply and demand, it is necessary to use oil resources effi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/025Y02P20/52
Inventor 侯小敏汪燮卿徐广通张书红金珂张月琴
Owner CHINA PETROLEUM & CHEM CORP
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