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A method for hydrodesulfurization of inferior gasoline

A low-quality gasoline and hydrodesulfurization technology, applied in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc., can solve the problem that the device cannot be operated for a long time, avoid top fouling and coking, easy operation and long-term guarantee. The effect of cycle operation

Active Publication Date: 2015-11-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a method for hydrogenation and desulfurization of inferior gasoline, especially for the inferior gasoline hydrotreating device in oil refining enterprises, to solve the problem that the device cannot operate for a long period due to fouling and coking

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  • A method for hydrodesulfurization of inferior gasoline

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Comparison scheme
Effect test

Embodiment 1

[0039] use figure 1 shown process flow. The properties of the used feedstock oils are listed in Table 2, the properties of the catalysts are listed in Table 3, and the process conditions and test results are listed in Table 4 and Table 12, respectively.

[0040] Table 2 Feedstock oil properties.

[0041] Oil name FCC gasoline Density, g / cm 3 0.7310 Distillation range / ℃ 36～206 Sulfur content / μg·g -1 576 Nitrogen content / μg g -1 38 Thiol sulfur / μg g -1 35.4 RON 93.5

[0042] Table 3 The main compositions and properties of the catalysts.

[0043] catalyst pretreatment catalyst Hydrogenation catalyst Catalyst composition

MoO 3 +CoO / wt% 3% 20% carrier Alumina Alumina The main properties of the catalyst

Particle size, mm 0.2 — Specific surface / m 2 ·g -1 180 226 Pore ​​volume / ml g -1 0.68 0.51

[0044] Table 4 embodiment 1 process conditions...

Embodiment 2

[0047] use figure 1 shown process flow. The properties of the feedstock oil are listed in Table 5, the properties of the catalyst are listed in Table 6, and the process conditions and test results are listed in Table 7 and Table 12, respectively.

[0048] Table 5 Feedstock oil properties.

[0049] Oil name Coking gasoline feedstock Density, g / cm 3 0.7413 Distillation range / ℃ 57～206 Sulfur content, μg / g 5656 Nitrogen content, μg / g 236

[0050] Table 6 The main compositions and properties of the catalysts.

[0051] catalyst pretreatment catalyst Hydrogenation catalyst Catalyst composition

MoO 3 +CoO / wt% 0 25% carrier Alumina Alumina The main properties of the catalyst

Particle size, mm 0.3 — Specific surface / m 2 ·g -1 180 226 Pore ​​volume / ml g -1 0.68 0.51

[0052] Table 7 Example 2 process conditions.

[0053] Process conditions data ...

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Abstract

The invention discloses a hydrodesulfurization method of inferior gasoline. The method comprises the following steps: (1) performing heat exchange of inferior gasoline with hydrodesulfurization reaction effluent, then mixing the inferior gasoline with thermal loaded oil, performing a pretreatment reaction in a fluidized bed reactor; (2) allowing the pretreatment effluent to enter a gasoline hydrodesulfurization reactor; (3) allowing the hydrodesulfurization reaction effluent to enter a high temperature low pressure separator for separation; (4) allowing the gas obtained in the high temperature low pressure separator to enter a low temperature low pressure separator for separation so as to obtain a gasoline product or a gasoline blending component; (5) returning the liquid obtained in the high temperature low pressure separation to step (1) to be used as thermal loaded oil. The method of the invention greatly prolongs the running period of the inferior gasoline device.

Description

technical field [0001] The invention relates to a method for hydrodesulfurization of inferior gasoline, in particular to a method for reducing abnormal inspection and prolonging the production period of an inferior gasoline hydrotreating device of an oil refinery enterprise. technical background [0002] In recent years, my country's gasoline and diesel products have been upgraded rapidly, especially the quality requirements for gasoline products are more stringent. At present, the proportion of secondary processed oil in my country's gasoline components is relatively high, such as catalytic cracked gasoline, coking gasoline and thermal cracking gasoline. In the above-mentioned gasoline product properties, the content of unsaturated hydrocarbons is high, the stability is poor, and the sulfur and nitrogen are difficult to meet the current gasoline standards in my country. Therefore, most refiners hydrotreate such gasolines. In this paper, the gasoline fractions such as the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
Inventor 陈光吴子明黄新露石友良曾榕辉
Owner CHINA PETROLEUM & CHEM CORP
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