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Improved hydrotreatment and catalytic cracking combination method for hydrocarbon oil

A catalytic cracking and hydrotreating technology, applied in hydrotreating process, treating hydrocarbon oil, petroleum industry, etc., can solve the problems of poor selectivity of gasoline or diesel with adjustable product distribution, and achieve higher yield, improved efficiency, The effect of increasing the depth of cracking transformation

Active Publication Date: 2012-08-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an improved combined method of hydrocarbon oil hydrotreating and catalytic cracking in view of the shortcomings of the adjustability of product distribution and poor selectivity of gasoline or diesel in product distribution in the prior art

Method used

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  • Improved hydrotreatment and catalytic cracking combination method for hydrocarbon oil
  • Improved hydrotreatment and catalytic cracking combination method for hydrocarbon oil
  • Improved hydrotreatment and catalytic cracking combination method for hydrocarbon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This example illustrates the following figure 1 The effect of process processing shown.

[0054] Wherein, the feedstock oil that enters the hydroprocessing reaction unit is feedstock oil A, and the product distribution of hydroprocessing reaction conditions and hydroprocessing oil is listed in Table 2, wherein the hydrogenated tail oil generated is named as hydrogenated tail oil C, Feed E is a commonly used catalytic cracking feed. Hydrogenated tail oil C and feed E accounted for 20% by weight and 80% by weight of the total feed, respectively. Feed E obtains light oil fraction H (distillation range is 350-500 ℃, accounts for 44% by weight of feed E) and heavy oil fraction G (distillation range is higher than 500 ℃, accounts for 44% by weight of feed E) through distillation respectively 56% by weight), various feed properties are listed in Table 3-1. The heavy distillate G and the hydrogenated tail oil C are introduced into the catalytic cracking reaction zone I toget...

Embodiment 2

[0058] This example illustrates the following figure 1 The effect of process processing shown.

[0059] Wherein, the feed oil that enters the hydroprocessing reaction unit is feed oil B, and the product distribution of hydroprocessing reaction conditions and hydroprocessing oil is listed in Table 2, wherein the hydrogenated tail oil that generates is named as hydrogenated tail oil D, Feed E is a common catalytic cracking feed (same as in Example). Hydrogenated tail oil D and feed E accounted for 70% by weight and 30% by weight of the total feed, respectively. Feed E obtains light oil fraction H (distillation range is 350-500 ℃, accounts for 44% by weight of feed E) and heavy oil fraction G (distillation range is higher than 500 ℃, accounts for 44% by weight of feed E) through distillation respectively 56% by weight), various feed properties are listed in Table 3-1. The heavy distillate G and the hydrogenated tail oil D are introduced into the catalytic cracking reaction zon...

Embodiment 3

[0063] This example illustrates the following figure 2 The effect of process processing shown.

[0064] Wherein, the feedstock oil that enters the hydroprocessing reaction unit is feedstock oil A, and the product distribution of hydroprocessing reaction conditions and hydroprocessing oil is listed in Table 2, wherein the hydrogenated tail oil generated is named as hydrogenated tail oil C, Feed E is a common catalytic cracking feed (same as Example 1). Hydrogenated tail oil C and feed E accounted for 20% by weight and 80% by weight of the total feed, respectively. Feed E obtains light oil fraction H (distillation range is 350-500 ℃, accounts for 44% by weight of feed E) and heavy oil fraction G (distillation range is higher than 500 ℃, accounts for 44% by weight of feed E) through distillation respectively 56% by weight), various feed properties are listed in Table 3-2. The heavy distillate G is introduced into the catalytic cracking reaction zone I alone, and the light dis...

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Abstract

The invention discloses an improved hydrotreatment and catalytic cracking combination method for hydrocarbon oil, which comprises the following steps that: under reaction conditions of the presence of hydrogen and the hydrotreatment, the contact reaction of residual oil, catalytic cracking cycle oil, optional distillate oil and a hydrotreating catalyst is performed, and gas, hydrogenerated naphtha, hydrogenerated diesel oil and hydrogenerated tail oil are obtained after a reaction product is separated; under catalytic cracking reaction conditions, the contact reaction of the optional conventional catalytic cracking raw oil, the hydrogenerated tail oil and a catalytic cracking catalyst is performed, and dry gas, liquefied gas, catalytic cracking gasoline, catalytic cracking diesel oil and catalytic cracking cycle oil are obtained after a reaction product is separated; and the conventional catalytic cracking raw oil is light or heavy distillate oil, and the contact reaction with the catalytic cracking catalyst is that the heavy raw oil and light raw oil are optionally and orderly performed along with the hydrogenerated tail oil in a reactor comprising at least two reaction regions (I and II) along the flowing direction of reaction materials respectively. The method is suitable for hydrocarbon oil conversion to produce more gasoline and diesel oil.

Description

technical field [0001] The invention relates to a method for converting hydrocarbon oil through the combined process of hydrogenation treatment process and catalytic cracking process. Background technique [0002] At present, the world is facing the trend of crude oil becoming heavier and worse, while people's demand for heavy fuel oil is gradually decreasing, while the demand for light oil is greatly increasing. Therefore, oil refining companies are pursuing the maximum conversion of residual oil into products such as motor gasoline, diesel and liquefied petroleum gas. It is an effective method to achieve the above-mentioned purpose by hydrogenation treatment to significantly reduce the content of sulfur, nitrogen, metal and other impurities and carbon residue in inferior heavy oil or residual oil, and meet the raw material requirements for normal processing of catalytic cracking units. [0003] US 4,713,221 discloses that on the basis of the combination of conventional re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/04
Inventor 高永灿谢朝钢牛传峰刘涛张久顺戴立顺毛安国聂红李大东崔琰马建国
Owner CHINA PETROLEUM & CHEM CORP
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