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Combination method for residue hydrotreatment, catalytic cracking heavy oil hydrogenation and catalytic cracking

A hydrogenation technology of catalytic cracking heavy oil and residual oil, which is applied in the field of hydrocarbon oil processing, can solve the problems of affecting the hydrogenation effect of heavy cycle oil and slurry distillate, high residual carbon value, high asphaltene, etc., to achieve high efficiency Utilization, improvement of cracking performance, and effect of increasing yield

Active Publication Date: 2012-02-08
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the residual oil contains a large amount of heavy metals such as Ni and V, the residual carbon value is high, and the asphaltene is high, it will seriously affect the hydrogenation effect of heavy cycle oil and slurry distillate

Method used

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  • Combination method for residue hydrotreatment, catalytic cracking heavy oil hydrogenation and catalytic cracking
  • Combination method for residue hydrotreatment, catalytic cracking heavy oil hydrogenation and catalytic cracking
  • Combination method for residue hydrotreatment, catalytic cracking heavy oil hydrogenation and catalytic cracking

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Effect test

Embodiment 1

[0038] The heated residual oil A and hydrogen enter the residual oil hydrogenation reactor and react under the action of the residual oil hydrogenation catalyst. The test conditions of the residual oil hydrogenation unit are shown in Table 3. The reactant stream enters the hot high-pressure separator I and is separated as Gas phase stream and liquid phase stream, wherein the liquid phase stream is subjected to normal pressure fractionation to obtain gas, hydrogenated gasoline, hydrogenated diesel oil and residue hydrogenated tail oil, and the residue hydrogenated tail oil is used as the raw material for catalytic cracking. Residue hydrogenation tail oil and hydrocatalytic cracking heavy oil enter the catalytic cracking unit together. The test conditions of the catalytic cracking unit are shown in Table 3. The reaction is carried out in the presence of a catalytic conversion catalyst, and the reaction products are separated to obtain dry gas, liquefied gas, gasoline and diesel oi...

Embodiment 2

[0044] Embodiment 2 adopts residual oil raw material B. Process flow is identical with embodiment 1. The difference from Example 1 is that the obtained FCC heavy oil accounts for 30% by weight of the catalytic feedstock. See Table 4 for the operating conditions of the residual oil hydrogenation unit, the catalytic cracking unit and the catalytic cracking heavy oil hydrogenation unit and the distribution of the final products (the sum of the products of the two units).

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Abstract

The invention relates to a combination method for residue hydrotreatment, catalytic cracking heavy oil hydrogenation and catalytic cracking. A reaction product obtained by a residue hydrotreatment reactor is separated into gas phase material flow and liquid phase material flow, residue hydrogenation tail oil obtained by fractionating the liquid phase material flow is taken as a catalytic cracking raw material to enter into a catalytic cracking device, catalytic cracking heavy oil in the catalytic cracking product is mixed with the gas phase material flow of the residue hydrogenation reaction product to enter into a catalytic cracking heavy oil hydrogenation reactor, the hydrogenated catalytic cracking heavy oil is circularly returned into the catalytic cracking device. According to the invention, a residue hydrogenation device and the catalytic cracking device are organically combined for conversing the residual oil into light oil to maximum limit and raising the yield of gasoline and diesel oil. In addition, a hydrogen source and a hydrogen system of the existing residue hydrogenation device are fully used, the separated hydrogen source and a circular hydrogen compressor are not required to the catalytic cracking heavy oil hydrogenation which substantially saves the investment cost and operation cost.

Description

technical field [0001] The invention belongs to a processing method of hydrocarbon oil, specifically a combination of a method for refining hydrocarbon oil in the presence of hydrogen and a method for cracking hydrocarbon oil in the absence of hydrogen. Background technique [0002] With the increasing scarcity of oil resources and the tendency of crude oil to become heavier and worse, how to use limited resources to produce light products with high demand has become a hot spot in the development of oil refining technology. In the processing flow of the refinery, the main technical means to realize the conversion of heavy oil are catalytic cracking, hydrocracking and coking. In my country, catalytic cracking has been widely used due to its good operational flexibility, high gasoline yield and low one-time investment. [0003] In order to increase the conversion rate of catalytic cracking and the yield of light oil in the existing catalytic cracking unit, the heavy oil (heav...

Claims

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Application Information

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IPC IPC(8): C10G69/00
Inventor 刘涛戴立顺许友好牛传峰杨清河邵志才刘学芬
Owner CHINA PETROLEUM & CHEM CORP
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