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Heavy oil hydrotreating method

A technology of heavy oil hydrogenation and treatment method, which is applied in refining to remove heteroatoms, etc., to achieve good hydrodesulfurization effect

Active Publication Date: 2016-07-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a new heavy oil hydrotreating method that can effectively improve the properties of heavy oil hydrogenation products in view of the current technical requirements for desulfurization, demetallization and carbon residue removal of heavy feedstock oil

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preparation example Construction

[0030] The present invention firstly provides a reference preparation method of the carrier I in the heavy oil hydrotreating catalyst I, the method comprising: mixing a hydrated alumina with an α-alumina and introducing boron-containing compound, then shaped, dried and fired. The temperature of the calcination can be 750-1000°C, preferably 800-950°C; the time of the calcination is 1-10 hours, preferably 2-8 hours; wherein, the hydrated alumina and α- The mixing weight ratio of alumina is 0.25-4, preferably 0.5-2. The method of introducing a boron-containing compound into the mixture of the hydrated alumina and the α-alumina is a conventional method, which can be directly adding the required amount of the boron-containing compound in the hydrated alumina and the α-alumina During the mixing process, for example, an aqueous solution prepared by a boron-containing compound can be introduced into the mixture of the hydrated alumina and the α-alumina, and the aqueous solution is mi...

Embodiment 1

[0054] Take by weighing 200g hydrated alumina (commercially purchased from Changling Catalyst Branch Company, the dry basis is 65% by weight, the pore volume is 1.05 ml / g, and the specific surface area is 230 m 2 / gram, the diameter of the most possible holes is 20 nanometers), 70 grams of α-alumina powder (formed by roasting 6 hours at 1400° C. by the hydrated alumina used in this embodiment), 9 grams of scallop powder and 15 grams of borax Mixing, at room temperature, this mixture is mixed with 330 milliliters of ammonia solution with a concentration of 4% by weight, after mixing evenly, kneading in a twin-screw extruder and extruding with a cylindrical orifice of φ 2.0mm, after that, the wet strip is passed through After drying at 120°C for 4 hours, calcining at 850°C for 2 hours, the carrier ZI1 of the present invention was obtained. The specific surface, most probable pore diameter, pore volume, pore distribution and boron content of carrier ZI1 were measured, and the res...

Embodiment 2

[0056] Take by weighing 180g dry rubber powder (commercially purchased from Changling Catalyst Branch Company, the dry basis is 65% by weight, the pore volume is 1.05 ml / g, the specific surface area is 285 m2 / g, and the most probable pore diameter is 20 nanometers), 120 grams of α-alumina powder (commercially purchased in Beijing Shun Chuan Environmental Protection Technology Co., Ltd.), 9 grams of scallop powder and 8 grams of boron oxide are mixed, then add 330 milliliters of aqueous solutions containing 10 grams of sodium borate, and mix them uniformly in a twin-screw screw Kneading in the extruder and extruding with a φ2.0mm cylindrical orifice, after that, the wet strip was dried at 120°C for 4 hours and then calcined at 850°C for 2 hours to obtain the carrier ZI2 of the present invention. The specific surface, most probable pore diameter, pore volume, pore distribution and boron content of carrier ZI2 were measured, and the results are shown in Table 1.

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Abstract

The present invention provides a heavy oil hydrotreating method, the method comprises contacting of heavy oil with a catalyst composition of a heavy oil hydrotreating catalyst I and a heavy oil hydrotreating catalyst II for heavy oil hydrotreating under heavy oil hydrotreating conditions, wherein first the heavy oil is contacted with the heavy oil hydrotreating catalyst I, and then contacted with the heavy oil hydrotreating catalyst II, by calculation of volume on the basis of the total volume of the catalyst composition as a reference, the content of the heavy oil hydrotreating catalyst I in the catalyst composition is 20-60v%, and the content of the heavy oil hydrotreating catalyst II in the catalyst composition is 40-80v%. Compared with conventional heavy oil hydrotreating methods, the heavy oil hydrotreating method has better hydrodesulfurization, demetalization and carbon residue removal effects when used in heavy oil hydrotreating.

Description

technical field [0001] The invention relates to a heavy oil hydrotreating method. Background technique [0002] With the continuous shortage of crude oil resources and the increasing demand for high-quality oil products, the processing volume of heavy and low-quality oil products in petrochemical enterprises has increased year by year. Compared with distillate oil, heavy oil contains a large amount of metal impurities such as nickel, vanadium, iron and calcium, so the above metal impurities must be effectively removed and deposited during the hydrotreating process, otherwise it will easily lead to catalyst deactivation and bed formation. The pressure drop increases, shortening the catalyst run cycle. At the same time, heavy and low-quality oil products also contain a large amount of harmful substances such as sulfur and residual carbon, which affect the product distribution and product properties of secondary processing processes such as catalytic cracking, and must be effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08C10G45/06
Inventor 胡大为杨清河刘佳孙淑玲聂红刘学芬戴立顺
Owner CHINA PETROLEUM & CHEM CORP
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