Anthracene oil hydrogenation method

An anthracene oil, hydrorefining technology, applied in the direction of hydrotreating process, petroleum industry, processing hydrocarbon oil, etc., can solve the problems of increasing the complexity of the hydrogenation system, increasing the cost, etc., to achieve long-term safe production, improve hydrogen The effect of partial pressure, harshness reduction

CN106221792AInactive Publication Date: 2016-12-14山东恒信科技发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-12-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of coalification industry and particularly relates to an anthracene oil hydrogenation method. The anthracene oil hydrogenation method comprises the following steps that after anthracene oil hydrofining, separation is performed through a hot high-pressure separator, a liquid-phase product enters a hot low-pressure separator, and hot low-fraction oil is partially circulated to a hydrofining reactor; the residual hot low-fraction oil enters a hydrocracking reactor to obtain a hydrocracking product, the hydrocracking product and gas separated from the hot high-pressure separator enter a cold high-pressure separator, the liquid separated from the hot high-pressure separator and gas separated from the hot low-pressure separator enter a cold low-pressure separator for further gas-liquid separation, cold low-fraction oil separated from the cold low-pressure separator is partially circulated to the hydrofining reactor; fractionation is conducted on the residual cold low-fraction oil to obtain various products and tail oil. The method is small in temperature rise at a refining stage and stable in operation, can not only used for production of light gasoline and diesel products through anthracene oil hydrogenation, makes the devices safe and stable in operation and prolongs the operating cycle of the devices.
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Description

technical field

[0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a method for hydrogenating anthracene oil. Background technique

[0002] Anthracene oil is an important part of coal tar components. In recent years, coal tar hydrogenation has attracted much attention in the coal chemical industry. It has been reported that hydrogenation of various fractions of coal tar as raw materials to prepare clean fuel oil has been reported.

[0003] Anthracene oil is one of the fractions obtained by distillation of high-temperature coal tar. Its initial boiling point is 220-260°C, and its final boiling point is 500-550°C. It has a relatively heavy distillation range and belongs to the heavy fraction range. Anthracene oil is mainly a mixture of compounds such as anthracene, phenanthrene, carbazole, and acenaphthene, mostly aromatic hydrocarbons with three rings and four rings or more, and the density (20°C) is greater than 1.0g / m...

Examples

Embodiment 1

[0030] The weight ratio of the total weight of the hot low fraction oil and the cold low fraction oil recycled to the hydrotreating reactor in this embodiment and the raw material anthracene oil is 2:1; wherein the mass ratio of the hot low fraction oil and the cold low fraction oil is 1:1.5.

[0031] The conditions of hydrofining reaction are: reaction temperature is 405°C, pressure is 18MPa, volume ratio of hydrogen to oil is 1200:1 and space velocity is 0.3h -1 , the composition and properties of the hydrorefining catalyst are: molybdenum oxide 18wt%, nickel oxide 9wt%, and the carrier is alumina; wherein the catalyst pore volume is 0.40ml / g, and the specific surface area is 130m 2 / g, the catalyst dosage is 85 μg / g (the metal content in the catalyst required for every gram of hydrogenation raw material).

[0032] The total pressure of the hydrocracking reaction system is 14MPa, the reaction temperature is 280°C, and the reaction space velocity is 1.0h -1 , The standard v...

Embodiment 2

[0034] The weight ratio of the total weight of the heat low fraction oil and the cold low fraction oil recycled back to the hydrotreating reactor in this embodiment and the raw material anthracene oil is 3:1; wherein the mass ratio of the heat low fraction oil and the cold low fraction oil is 1:1.5.

[0035] The conditions of hydrofining reaction are: reaction temperature 410°C, pressure 19MPa, hydrogen-oil volume ratio 1600:1 and space velocity 0.6h -1 , the composition and properties of the hydrorefining catalyst are: molybdenum oxide 20wt%, nickel oxide 7wt%, and the carrier is alumina; wherein the catalyst has a pore volume of 0.60ml / g and a specific surface area of ​​145m 2 / g, the catalyst dosage is 95 μg / g (the metal content in the catalyst required for every gram of hydrogenation raw material).

[0036] Hydrocracking operating conditions, the total pressure of the hydrocracking reaction system is 13MPa, the reaction temperature is 275°C, and the reaction space velocit...

Embodiment 3

[0038] The weight ratio of the total weight of the heat low fraction oil and the cold low fraction oil recycled back to the hydrotreating reactor in this embodiment and the raw material anthracene oil is 3:1; wherein the mass ratio of the heat low fraction oil and the cold low fraction oil is 1:2.

[0039] The conditions of hydrofining reaction are: reaction temperature 405°C, pressure 19MPa, hydrogen-oil volume ratio 1500:1 and space velocity 0.5h -1 , the composition and properties of the hydrorefining catalyst are: molybdenum oxide 19wt%, nickel oxide 8wt%, and the carrier is alumina; wherein the catalyst has a pore volume of 0.50ml / g and a specific surface area of ​​138m 2 / g, the catalyst dosage is 90 μg / g (the metal content in the catalyst required per gram of hydrogenation raw material).

[0040] Hydrocracking operating conditions, the total pressure of the hydrocracking reaction system is 13MPa, the reaction temperature is 280°C, and the reaction space velocity is 0.9...