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Heavy oil hydrogenation processing catalyst and method for preparing same

A heavy oil hydrogenation and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Pore ​​distribution, low specific surface area, etc.

Active Publication Date: 2010-01-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new catalyst for the heavy oil hydrotreating provided by the prior art. Heavy oil hydrotreating catalyst with better hydrodesulfurization and carbon residue removal performance and preparation method thereof

Method used

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  • Heavy oil hydrogenation processing catalyst and method for preparing same
  • Heavy oil hydrogenation processing catalyst and method for preparing same
  • Heavy oil hydrogenation processing catalyst and method for preparing same

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preparation example Construction

[0013] The preparation method of the alumina carrier includes forming, drying, and calcining the alumina precursor, wherein the calcining conditions are: calcining at a temperature of 350-400°C for 0.5-2 hours, and then at 600-800°C. It is calcined at a temperature of ℃ for 1-6 hours.

[0014] Under preferred conditions, the firing conditions are: firing at a temperature of 350-400°C for 1-2 hours, and then firing at a temperature of 600-800°C for 2-4 hours.

[0015] The precursor of the alumina is preferably hydrated alumina. The hydrated alumina is preferably one or more of alumina trihydrate, alumina monohydrate and amorphous aluminum hydroxide. The precursor of the alumina is commercially available.

[0016] According to the method provided by the present invention, the molding can be carried out according to conventional methods, such as tablet pressing, rolling ball, extrusion, etc. For example, when extruding, the mixture can be mixed with an appropriate amount of water, an...

Embodiment 1

[0027] Mix 300 grams of pseudo-boehmite dry rubber powder (produced by Changling Catalyst Factory) and 10 grams of Sesbania powder, and mix the mixture with 360 ml of 1% nitric acid aqueous solution at room temperature. After continuous kneading into a plastic body on a twin-screw extruder, it was extruded into a trilobal strip of φ1.5 mm. The wet strip was dried at 120°C for 4 hours, then calcined at 380°C for 1 hour and 620°C for 3 hours to obtain carrier Z1 . The specific surface, pore volume and pore size distribution of Z1 were measured, and the results are shown in Table 1.

[0028] The specific surface, pore volume and pore size distribution of the carrier were determined by the BET low-temperature nitrogen adsorption method.

Embodiment 2

[0033] Mix 300 grams of pseudo-boehmite dry rubber powder (same as Example 1) and 10 grams of sesame powder, add 360 ml of 1% nitric acid aqueous solution, mix well, and continue to knead on the twin-screw extruder to make it plastic After the body, it was extruded into a butterfly-shaped strip with a diameter of 1.1 mm, and the wet strip was dried at 120°C for 2 hours, then calcined at 400°C for 1.5 hours and 700°C for 4 hours to obtain carrier Z2. The specific surface, pore volume and pore size distribution of Z2 were measured, and the results are shown in Table 1.

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Abstract

The invention provides a heavy oil hydrogenation processing catalyst and a method for preparing the same. The catalyst comprises a carrier, at least one metal component selected from the VIII group and at least one metal component selected from the VIB group. The catalyst is characterized in that: the pore volume of the carrier is between 0.6 and 1.2ml / g, the specific surface of the carrier is between 200 and 380m<2> / g, the average pore diameter of the carrier is between 11 and 14nm, and the pore volume of the pores of which the pore diameter is between 9 and 15nm is 80 to 95 percent of the total pore volume. The method for preparing the carrier comprises the step of forming, drying and baking a precursor of aluminum oxide, wherein the baking conditions comprise that the precursor is baked for 0.5 to 2 hours at a temperature of between 350 and 400 DEG C, and for 1 to 6 hours at a temperature of between 600 and 800 DEG C. Compared with the catalyst provided by the prior art, the catalyst of the invention has high demetalization activity as well as excellent desulfuration and carbon residue removal properties.

Description

Technical field [0001] The invention relates to a hydroprocessing catalyst and a preparation method thereof, and more specifically to a heavy oil hydroprocessing catalyst and a preparation method thereof. Background technique [0002] Deep processing of residual oil is not only beneficial to increase the utilization rate of crude oil and alleviate the tightness of energy supply, but also to reduce environmental pollution and achieve efficient and clean use of energy. Most of the impurities such as sulfur, nitrogen and metals in crude oil are concentrated in the residual oil. These impurities have an important impact on the subsequent processing and product properties. Therefore, these impurities must be removed by hydrotreating first. Compared with distillate oil, in addition to sulfur, nitrogen and other impurities, heavy oil also contains a higher proportion of metal impurities such as Ni and V. Therefore, in the process of heavy oil hydrotreating, the catalyst is required to h...

Claims

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Application Information

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IPC IPC(8): B01J23/88B01J23/883C10G45/08
Inventor 胡大为杨清河刘滨曾双亲牛传峰刘涛戴立顺聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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