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Heavy oil hydrotreating method

A technology for hydrogenation and treatment of heavy oil, which is applied in refining to remove heteroatoms and other directions to achieve a good effect of hydrodesulfurization

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

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0050] The pseudo-boehmite dry rubber powder RPB90 produced by 1 kilogram of Changling Catalyst Factory and 30 grams of fennel powder are mixed uniformly, and at room temperature, the concentration of this mixture and 1.1 liters is 1% by weight of nitric acid aqueous solution, mix uniformly, After continuing to knead into a plastic body on a twin-screw extruder, extrude it into a trefoil strip of ф1.1mm, dry the wet strip at 120°C for 3 hours, and then calcinate it at 600°C for 3 hours to obtain a shaped alumina carrier ZII1. The physical and chemical results of the determination of ZII1 are shown in Table 1.

Embodiment 2

[0052] Mix 1 kilogram of pseudo-boehmite dry rubber powder RPB100 produced by Changling Catalyst Factory and 30 grams of astragalus powder evenly, add 1.2 liters of nitric acid aqueous solution with a concentration of 1% by weight, mix evenly, and continue kneading on the twin-screw extruder After forming a plastic body, it is extruded into a butterfly-shaped strip of ф1.1mm, and the wet strip is dried at 110°C for 2 hours, and then calcined at 700°C for 3 hours to obtain a shaped alumina carrier ZII2. The physical and chemical results of the determination of ZII2 are shown in Table 1.

Embodiment 3

[0055] Weigh 150g of the ZII1 carrier and place it in a hydration kettle, add 150g of deionized water, seal the hydration kettle and put it in an oven, heat it with a programmed temperature rise, and control the temperature rise rate to 10°C·min -1 , the treatment temperature is 80° C., and the treatment time is 16 hours. After the completion of the hydrothermal treatment, the alumina was filtered, and then dried at 120° C. for 3 hours to obtain a hydrothermally treated alumina carrier.

[0056] Take 1100 grams of carrier ZII1100 after heat treatment in water, and use 220 milliliters containing MoO 3 170 g / L, NiO30 g / L mixed solution of ammonium molybdate and nickel nitrate was impregnated for 1 hour, filtered, dried at 120°C for 2 hours, and calcined at 410°C for 2 hours to obtain catalyst CII1. In terms of oxides and based on the load on the surface of the unit carrier II, an X-ray fluorescence spectrometer is used to measure the content of molybdenum oxide and nickel oxide...

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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): C10G45/08
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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