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Combined process method for producing olefin, aromatic hydrocarbon and mesophase pitch-based carbon fiber from crude oil

A mesophase pitch and carbon fiber technology, applied in the petroleum industry, hydroprocessing process, hydrocarbon oil treatment products, etc., can solve the problems of poor raw material adaptability and low chemical yield, and achieve strong adaptability and high chemical yield High, simple processing effect

Active Publication Date: 2021-12-21
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This invention mainly solves the problems of poor raw material adaptability and low chemical yield in existing crude oil-to-chemicals technology. The integration of processes such as separation, aromatics enhancement, olefins enhancement, and carbon fiber enhancement provides a combined process method for the production of olefins, aromatics, and mesophase pitch-based carbon fibers from crude oil, maximizing the conversion of crude oil into light olefins, aromatics, and carbon fibers

Method used

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  • Combined process method for producing olefin, aromatic hydrocarbon and mesophase pitch-based carbon fiber from crude oil
  • Combined process method for producing olefin, aromatic hydrocarbon and mesophase pitch-based carbon fiber from crude oil
  • Combined process method for producing olefin, aromatic hydrocarbon and mesophase pitch-based carbon fiber from crude oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The paraffin-based crude oil from a refinery was used as the raw material, and the properties of the raw material are shown in Table 1.

[0042] Heavy oil directional upgrading unit: the reactor adopts a riser reactor, and the directional upgrading catalyst adopts Bi-Ca-K / coarse-pore silica gel (based on the catalyst, the Bi content is 2.5wt%, the Ca content is 5.0wt%, and the K content is 8.0wt%) %, the balance is coarse-porous silica gel), reaction conditions: temperature 580°C, pressure 0.1MPa, steam / oil mass ratio 1.0:1.

[0043] Gasoline and diesel selective hydrofining unit: the catalyst uses Ni-Mo / macroporous alumina (based on the catalyst, the Ni content is 8wt%, the Mo content is 4.0wt%, and the balance is macroporous alumina), and the reaction conditions are: temperature 120℃, pressure 3.0MPa, mass space velocity 2.0h -1 , The volume ratio of hydrogen to oil is 600:1.

[0044] Gasoline and diesel adsorption separation unit: simulated moving bed process is ad...

Embodiment 2

[0051] The intermediate base crude oil from a refinery is used as the raw material, and the properties of the raw material are shown in Table 1.

[0052] Heavy oil directional upgrading unit: the reactor adopts a dense-phase fluidized bed, and the directional upgrading catalyst adopts Bi-Ca-K / silica (based on the catalyst, the Bi content is 4.0wt%, the Ca content is 10.0wt%, and the K content is 5.0 wt%, the balance is white carbon black), reaction conditions: temperature 480°C, pressure 0.2MPa, steam / oil mass ratio 2.0:1.

[0053] Gasoline and diesel selective hydrofining unit: the catalyst uses Ni-Co / amorphous silica-alumina + alumina (based on the catalyst, Ni content is 10wt%, Co content is 4.0wt%, and the balance is amorphous silica-alumina + alumina) , the reaction conditions are: temperature 140°C, pressure 3.0MPa, mass space velocity 1.5h -1 , The volume ratio of hydrogen to oil is 500:1.

[0054] Gasoline and diesel adsorption separation unit: fixed bed technology i...

Embodiment 3

[0061] Naphthenic crude oil from a refinery is used as raw material, and the properties of the raw material are shown in Table 1.

[0062] Heavy oil directional reforming unit: the reactor adopts moving bed, and the directional reforming catalyst adopts Ce-Ca-Mg / high silicon MCM-48 molecular sieve (based on the catalyst, Ce content is 3.0wt%, Ca content is 15.0wt%, Mg content is 3.0wt%) %, the balance is molecular sieve + binder), reaction conditions: temperature 500°C, pressure 0.5MPa, steam / oil mass ratio 2.0:1.

[0063] Gasoline and diesel selective hydrofining unit: the catalyst uses Ni-Mo-Co / alumina (based on the catalyst, Ni content 10wt%, Mo content 5.0wt%, Co content 4.0wt%, the balance is alumina), the reaction The conditions are: temperature 150°C, pressure 4.0MPa, mass space velocity 1.5h -1 , The volume ratio of hydrogen to oil is 600:1.

[0064] Gasoline and diesel adsorption separation unit: simulated moving bed technology is adopted, the adsorbent is activated...

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Abstract

The invention provides a combined process method for producing low-carbon olefin, aromatic hydrocarbon and mesophase pitch-based carbon fiber from crude oil. According to the combined process method, crude oil is cut firstly, light fractions are subjected to hydrofining, then non-aromatic hydrocarbon (alkane and olefin) and aromatic hydrocarbon components are separated through adsorption separation, and the olefin and aromatic hydrocarbon yield increasing processing technology is matched according to component characteristics, so that low-carbon olefin and aromatic hydrocarbon are produced to the maximum extent. The heavy fraction is converted into a modified product rich in olefin and aromatic hydrocarbon through a directional modification unit, modified gasoline and diesel oil are subjected to hydrofining and then returned to an adsorption separation unit, the modified heavy product is rich in polycyclic aromatic hydrocarbon, and the high-quality mesophase pitch-based carbon fiber is produced through supercritical water modification and carbon fiber processing technologies. The combined process method has the advantages of high raw material adaptability, high chemical yield, low hydrogen consumption, mild operation conditions and the like, and can be used for industrial production.

Description

technical field [0001] The invention relates to the technical field of production of low-carbon olefins, aromatics and mesophase pitch-based carbon fibers, in particular to a combined process method for producing olefins, aromatics and mesophase pitch-based carbon fibers from crude oil. Background technique [0002] With the vigorous development of new energy technologies, the position of fossil energy has been greatly challenged. The structure of the traditional refining and chemical industry mainly focuses on the production of high-quality gasoline and diesel. It is more difficult to transform to the chemical industry. The rate of chemical products can only reach about 45%. A large amount of gasoline and diesel still needs to be produced. The sales of products are facing great difficulties. Looking for a revolutionary industry Transformation and upgrading of technology is imperative. The technology of direct production of chemicals from crude oil is an important means of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00D01F9/155
CPCC10G69/00D01F9/155C10G2300/1037C10G2400/30C10G2400/20C10G2400/02C10G2400/04
Inventor 郭春垒范景新李犇李健臧甲忠李福双吴青赵云董子超郭健张雪梅
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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