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Combined process of hydrotreatment and catalytic cracking for residuum

A catalytic cracking and hydrotreating technology, applied in hydrotreating process, petroleum industry, treating hydrocarbon oil, etc., can solve the problem of no specific combination, and achieve the effect of reducing energy, facilitating separation, and reducing heat loss

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The combined process is only based on the liquid feed requirements of different devices for the joint use of devices, without specific combination of the characteristics of various processes, try to maximize the advantages of each process

Method used

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  • Combined process of hydrotreatment and catalytic cracking for residuum
  • Combined process of hydrotreatment and catalytic cracking for residuum
  • Combined process of hydrotreatment and catalytic cracking for residuum

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Embodiment

[0033] This embodiment adopts the combined method of fluidized bed residual oil hydrotreating and catalytic cracking provided by the present invention, and the flow chart is shown in figure 1 , wherein the hydrotreated liquid phase product fractionates light components and heavy components, and its cut point is 350°C. The second-stage feed inlet is above the first-stage feed, and the height from the first feed inlet accounts for the total height of the riser. 1 / 10 of the high. Table 2, Table 3, and Table 4 are the process conditions, product distribution and main product properties respectively.

[0034] The comparison results show that the oil produced by hydrogenation of residual oil is divided into light components and heavy components, which enter the riser reactor from the two-stage feed port for catalytic cracking reaction, and enter the catalytic cracking reaction together with the whole fraction of hydrogenated oil produced by residual oil Compared with the reactor, t...

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Abstract

The invention discloses a combined process of hydrotreatment and catalytic cracking for residuum. According to the process, a boiling bed hydrotreatment method is used in hydrotreatment of residuum, and the process comprises the following steps that: liquid phase products obtained after the raw material of residuum undergoes boiling bed hydrotreatment are subjected to fractional distillation so as to obtain light components and heavy components; the light components are used as first-stage charging materials and enter into a catalytic cracking riser reactor from the bottom of the reactor; the heavy components directly enter into a catalytic cracking fractionator and are subjected to fractional distillation together with effluent of a catalytic cracking reaction so as to isolate dry gas, liquefied gas, gasoline fraction, diesel oil fraction, recycle oil and slurry oil, wherein, the recycle oil is used as a second-stage charging material of the riser reactor, and the slurry oil is used as a charging component for delayed coking. Compared to the prior art, the process provided in the invention has the following characteristics: gasoline with a high octane number, diesel oil fraction and liquefied gas with a high added value can be produced; reaction thermal energy is fully utilized, thereby reducing energy consumption in production.

Description

technical field [0001] The invention relates to a method for lightening residue oil, specifically a process for producing high-octane gasoline products and diesel fractions by organically combining residue oil hydrotreating and catalytic cracking, using residue oil as raw material. Background technique [0002] As crude oil becomes heavier and worse, more and more residues need to be processed. The processing of heavy and residual oil not only needs to crack it into products with low boiling point, such as naphtha, middle distillate oil and vacuum gas oil, etc., but also to increase their hydrogen-carbon ratio, which requires decarbonization or Hydrogenation method to achieve. The decarbonization process includes coking, solvent deasphalting, heavy oil catalytic cracking, etc.; hydrogenation includes hydrocracking, hydrofining, etc. The hydrogenation method can not only hydrogenate and convert residual oil, improve the yield of liquid products, but also remove heteroatoms,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
Inventor 张学萍蒋立敬胡长禄韩照明初人庆矫德卫
Owner CHINA PETROLEUM & CHEM CORP
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