Hydrotreating method of inferior gasoline raw material

A low-quality gasoline and hydrotreating technology, which is applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problem that the device cannot be operated for a long period, avoid fouling and coking, avoid local overheating, and be easy to operate Effect

Active Publication Date: 2014-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • 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 treatment of inferior gasoline raw materials, especially for the inferior gasoline hydrogenation treatment equipment of oil refining enterprises, to solve the problem that the equipment cannot be operated for a long period due to fouling and coking

Method used

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  • Hydrotreating method of inferior gasoline raw material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] use figure 1 The process flow shown. The properties of the catalyst used are listed in Table 3, and the process conditions and test results are listed in Table 4 and Table 11, respectively.

[0038] Table 3 The main composition and properties of the catalysts.

[0039] pretreatment catalyst hydrogenation catalyst Catalyst composition MoO 3 +CoO / wt% 5 20 carrier Aluminum oxide Aluminum oxide 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

[0040] Table 4 Example 1 process conditions.

[0041] Process conditions data volumetric space velocity, h -1 4 Cycle oil / raw material weight ratio 0.50 Hydrogen / coked gasoline volume ratio 300 Average reaction temperature of pretreatment reactor / °C 230 Average reaction temperature of hydrotreating reactor / °C 290 Reaction press...

Embodiment 2

[0043] use figure 1 The process flow shown. The catalyst properties used are listed in Table 5, and the process conditions and test results are listed in Table 6 and Table 11 respectively.

[0044] Table 5 Main composition and properties of catalysts.

[0045] pretreatment catalyst hydrogenation catalyst Catalyst composition MoO 3 +CoO / wt% 0 25 carrier Aluminum oxide Aluminum oxide 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

[0046] Table 6 Example 2 process conditions.

[0047] Process conditions data volumetric space velocity, h -1 4 Heat load oil / raw material weight ratio 0.60 Hydrogen / coked gasoline volume ratio 300 Average reaction temperature of pretreatment reactor / °C 230 Average reaction temperature of hydrotreating reactor / °C 290 Reaction pressure / MPa 2.5...

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Abstract

The invention discloses a hydrotreating method of an inferior gasoline raw material. The method comprises the following steps: mixing inferior gasoline with thermal loaded oil and circulating hydrogen, allowing the mixture to enter a fluidized bed hydrogenation pretreatment reactor; separating the effluent of the hydrogenation pretreatment to obtain gas and liquid; returning the liquid as thermal loaded oil to the pretreatment reactor, allowing the gas to pass through a gasoline hydrotreating reactor in an upward flow manner; performing gas-liquid separation of the gasoline hydrogenation effluent in a low temperature low pressure separator, purifying the obtained hydrogen-rich gas for recycle, and performing gas stripping of the obtained liquid so as to be used as a gasoline blending component or a chemical raw material. The method of the invention greatly prolongs the running period of the inferior gasoline hydrotreating device.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of low-quality gasoline raw materials, in particular to a method for reducing abnormal maintenance and prolonging the production cycle of the low-quality gasoline hydrogenation treatment device of an oil refinery enterprise due to abnormal shutdown and maintenance of the device due to coking. 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 processing oil in gasoline components in my country is relatively high, such as catalytic cracking gasoline, coking gasoline and pyrolytic gasoline. Among the properties of the above-mentioned gasoline products, 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 coun...

Claims

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Application Information

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Patent Type & Authority Applications(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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