Hydrocracking catalyst and method of hydrocracking heavy oil

Inactive Publication Date: 2005-06-02
TOYO ENG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0035] Accordingly, the activated carbon catalyst is effective as a catalyst forming less coke, incorporating a larger amount of removed heavy metal, and undergoing less deterioration in the hydrocracking reaction of

Problems solved by technology

Because a catalyst is used in fluid catalytic cracking or hydrocracking, the content of nickel and vanadium and the content of residual carbon in heavy oil as a raw oil are limited.
In a regeneration tower, the catalyst is regenerated by burning the coke, but when the amount of accumulated coke is large, the temperature in the regeneration tower is increased to deteriorate the catalyst.
Nickel and particularly vanadium destroy the crystalline structure of zeolite to deteriorate the activity.
The process of removing asphalte

Method used

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  • Hydrocracking catalyst and method of hydrocracking heavy oil
  • Hydrocracking catalyst and method of hydrocracking heavy oil
  • Hydrocracking catalyst and method of hydrocracking heavy oil

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0069] Various kinds of activated carbon were prepared by the above-described method of producing activated carbon extrudate.

[0070] The states of Preparations 1, 2 and 3 prepared in Examples 1-1,1-2 and 1-3 from Yalloum brown coal as the starting carbon source by changing the activation time are shown in Table 1. Commercial Product 1 in Comparative Example 1-1 and Commercial Product 2 in Comparative Example 1-2 are commercial activated carbon made of peat, and Commercial Product 3 in Example 1-4 is produced by activating Comparative Product 2 (activated carbon) again with steam for 3 hours to change its pore structure. Australian Yalloum brown coal could be used as the carbon source to produce activated carbon wherein the ratio by volume of pores having pore diameter in the range of 38 to 90 nm to pores having pore diameter in the range of 20 to 200 nm was 45% or more.

[0071] A patent application (JP-A2001-9282) concerning activated carbon as a catalyst for hydrocracking of heavy o...

example 2

[0075] The ability of activated carbon to adsorb asphaltene was examined by the method described above for the ability to adsorb asphaltene.

[0076] Table 2 shows physical properties of activated carbon extrudate not carrying metal.

[0077] The vacuum residual oil was from the Middle East crude, and had the following main properties: API 5.35; 22.4 wt % CCR (carbon residue), 4.02 wt % sulfur, 0.53 wt % nitrogen, 53 wppm nickel, 180 wppm vanadium and 9.08 wt % asphaltene (nC7 Insols.).

[0078] As can be seen from Table 2, it was found that the activated carbon extrudate having pores with an absolute value of pore volume in the range of 0.8 ml / g or more wherein the proportion of pores having pore diameter in the range of 20 to 200 nm is 30 vol % or more, and the ratio by volume of pores having pore diameter in the range of 38 to 90 nm to pores having pore diameter in the range of 20 to 200 nm is 45% or more is also excellent in the ability to adsorb asphaltene.

TABLE 2ComparativeCompara...

example 3

[0079] Activated carbon catalysts were prepared by the method described above for conversion of activated carbon extrudate into a catalyst, and the abilities of the activated carbon catalysts to suppress formation of coke were compared and evaluated by the method described above for the ability to suppress formation of coke.

[0080] The vacuum residual oil was from the Middle East crude, and had the following main properties: API 5.35; 22.4 wt % CCR (carbon residue), 4.02 wt % sulfur, 0.53 wt % nitrogen, 53 wppm nickel, 180 wppm vanadium and 9.08 wt % asphaltene (nC7 Insols.).

[0081] As shown in Table 3, it was found that the activated carbon extrudate having pores with an absolute value of pore volume in the range of 0.8 ml / g or more wherein the proportion of pores having pore diameter in the range of 20 to 200 nm is 30 vol % or more, the ratio by volume of pores having pore diameter in the range of 38 to 90 nm to pores having pore diameter in the range of 20 to 200 nm is 45% or mor...

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Abstract

In a process of hydrocracking heavy oil with a catalyst in petroleum refining, asphaltene contained in heavy oil, and impurities including heavy metals such as nickel and vanadium, are efficiently removed with activated carbon, whereby the reduction in catalyst activity or formation of coke by the impurities can be prevented. The invention provides a hydrocracking catalyst comprising activated carbon extrudate as a carrier activated with steam and having a high distribution of pores having pore sizes in the range of 20 to 200 nm.

Description

TECHNICAL FIELD [0001] The present invention relates to a hydrocracking catalyst and to a method of hydrocracking heavy oil by using it. More specifically, it relates to a method wherein in a step of hydrocracking heavy oil with a catalyst in petroleum refining, asphaltene and impurities including metals such as nickel and vanadium contained in heavy oil are removed with activated carbon so that the reduction in catalyst activity or formation of coke by the impurities is prevented. PRIOR ARTS [0002] A method of treating heavy oil with a catalyst includes fluid catalytic cracking (FCC), hydrocracking, etc. In fluid catalytic cracking, raw oil is fluidized together with a silica alumina catalyst or a zeolite catalyst, and pyrolyzed to produce gasoline mainly. The catalyst on which coke formed and accumulated in the cracking reaction is recycled and reused after the coke is burned in a regenerating tower. [0003] In hydrocracking, heavy oil is hydrocracked with an alumina supported cata...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J23/28B01J23/74B01J23/745B01J23/75B01J23/755B01J23/88B01J23/883B01J35/10B01J37/00B01J37/10C01B32/336C01B32/384C10G47/12C10G47/24C10G47/28
CPCB01J21/18C10G2300/807B01J23/74B01J23/745B01J23/75B01J23/755B01J23/88B01J23/883B01J35/10B01J35/1042B01J35/1047B01J35/1061B01J35/1066B01J35/108B01J37/0009B01J37/10C01B31/10C10G47/12C10G2300/4018C10G2300/205C10G2300/206C10G2300/301C10G2300/703B01J23/28C01B32/336
Inventor FUKUYAMA, HIDETSUGUTERAI, SATOSHIUCHIDA, MASAYUKI
Owner TOYO ENG CORP
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