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Inferior gasoline hydrotreating method

A low-quality gasoline and hydrotreating technology, applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problem that the device cannot be operated for a long time, prevent coke powder from entering the top of the hydrodesulfurization reactor, effectively Heat energy, effect of short mixing time

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

[0012] Aiming at the deficiencies of the prior art, the present invention provides a method for hydrogenation treatment of inferior gasoline, especially for the hydrogenation treatment device of inferior gasoline in oil refining enterprises, to solve the problem that the device cannot operate for a long period due to fouling and coking

Method used

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  • Inferior gasoline hydrotreating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] use figure 1 The process flow shown. The properties of the raw oil used are listed in Table 2, the properties of the catalyst are listed in Table 3, and the process conditions and test results are listed in Table 4 and Table 12, respectively.

[0045] Table 2 Raw oil properties.

[0046] 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

[0047] Table 3 The main composition and properties of the catalyst.

[0048]

pretreatment catalyst hydrogenation catalyst Catalyst composition

MoO 3 +CoO / wt% 3 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

[0049] Table 4 Example 1 process conditions.

[0050] Process conditions data Ebulla...

Embodiment 2

[0052] use figure 1 The process flow shown. The properties of the raw 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.

[0053] Table 5 Raw oil properties.

[0054] 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

[0055] Table 6 The main composition and properties of the catalyst.

[0056]

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

[0057] Table 7 Example 2 process conditions.

[0058] Process conditions data Ebul...

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Abstract

The invention discloses a hydrotreating method of inferior gasoline. The method comprises the following steps: (1) mixing inferior gasoline raw materials with circulating hydrogen and thermal loaded oil, performing pretreatment reaction of the mixture in a fluidized bed reactor; (2) allowing the effluent of the pretreatment reaction to enter a gasoline hydrogenation reactor; (3) heating the effluent of the hydrogenation reaction in a heating furnace, entering a heat exchanger, then entering a high temperature low pressure separator; (4) separating the obtained gas in a low temperature low pressure separator, performing gas stripping of the liquid to obtain the product; (5) heating the liquid which is obtained in step (3) and used as thermal loaded oil in the heat exchanger, and returning the liquid to step (1) for recycle. The method of the invention can ensure long-period running of the device, and make more effective use of heat energy.

Description

technical field [0001] The invention relates to a low-quality gasoline hydrogenation treatment method, in particular to a method for meeting the long-period production for the low-quality gasoline hydrogenation treatment device of an oil refinery. technical background [0002] In the past ten years, due to the slow growth of crude oil production and the increasingly heavy quality, the market demand for light oil products has continued to increase. Coupled with the increasingly stringent environmental protection regulations, relatively higher requirements are put forward for the crude oil secondary processing capacity of petroleum refining and chemical enterprises. The secondary processing devices of petroleum refining and chemical enterprises are mainly coking, catalytic cracking, hydrogenation and catalytic reforming devices. [0003] In petroleum processing, coking is the abbreviation of residual oil coking, which refers to the process of deep cracking and condensation re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
Inventor 廖娜陈光黄新露吴子明曾榕辉石友良
Owner CHINA PETROLEUM & CHEM CORP
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