A method for processing inferior heavy oil

A low-quality heavy oil, oil and gas technology, applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil processing products and other directions, can solve the problems of poor product distribution, low gasoline and diesel yields, etc., to achieve industrial application, simple process, The effect of reducing coke yield

Active Publication Date: 2015-08-26
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although the inert porous microsphere heat carrier used in this process can remove carbon residues, asphaltenes and metal impurities, and can process low-quality heavy oil with high carbon residues and high density (such as Iranian vacuum residue), the obtained Poor product distribution, low gas, diesel and overall liquids yields

Method used

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  • A method for processing inferior heavy oil
  • A method for processing inferior heavy oil
  • A method for processing inferior heavy oil

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Embodiment 1

[0048]In order to illustrate the effect of the method of the present invention, the present embodiment adopts the above-mentioned technological process to process Venezuelan vacuum residue. The properties of the solid catalytic particles used as the catalytic contact agent are shown in Table 2, and the properties of the vacuum residue are shown in Table 1.

[0049] The Venezuelan vacuum residue raw material with a residual carbon value of 22.78wt% was preheated to 260°C and introduced into a riser-bed reactor for processing. The relevant parameter control and material balance data of this process are shown in Table 3.

[0050] After preheating the Venezuelan vacuum residue raw material, it is sprayed into the riser bed reactor, mixed and reacted with solid catalytic particles with good surface structure, fluidization performance, pore structure and suitable activity, so that the raw material is catalyzed Residue carbon removal, heavy metal removal and asphaltene removal reacti...

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Abstract

The present invention provides a method for processing low-grade heavy oil, comprising: providing a riser-bed reactor; preheating the low-grade heavy oil and injecting it into the riser reactor to react with solid catalyst particles at the temperature of 550-610° C.; oil-gas, after reacting with the solid catalyst particles in the riser reactor, being introduced into the fluidized bed reactor to continue to react at temperature of 440-520° C. and weight hourly space velocity of 0.5-5 h−1; and the oil-gas, after reacting in the fluidized bed reactor, being separated from coked solid catalyst particles carried therein, and the separated oil-gas being introduced into a fractionation system. The method can effectively remove carbon residues, heavy metals, asphaltenes and other impurities from the low-grade heavy oil, and obtain high liquid product yield in a simple process.

Description

technical field [0001] The invention relates to a method for processing low-quality heavy oil, which belongs to the technical field of petrochemical industry. Background technique [0002] In the refining industry, low-quality heavy oil generally refers to heavy oil fractions with high boiling point, high carbon residue, high metal content, and high asphaltenes, and its types usually include vacuum residue, heavy oil residue from solvent separation process, deoiled bitumen, and oil sands asphalt etc. Inferior heavy oil has low commercial value. On the one hand, it cannot be directly used as fuel oil due to its nature restricted by environmental protection regulations. On the other hand, due to the high asphaltene content, heavy metal content and high carbon residue value, it is very easy to cause permanent catalyst contactors. Deactivation and unit coking shut down, so it cannot be used as feed for conventional catalytic cracking, hydrotreating and delayed coking processes....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/06
CPCC10G11/18C10G11/02C10G11/04C10G2300/107C10G2300/1077C10G2400/02C10G2400/04C10G2400/30
Inventor 王刚高金森徐春明申宝剑王洪亮
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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