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Catalytic conversion method for inferior oil product

A technology for catalytic conversion and oil products, applied in chemical instruments and methods, molecular sieve catalysts, physical/chemical process catalysts, etc., can solve the problems of shortage of resources, limited output of paraffin-based crude oil, etc., and achieve high yields of low-carbon olefins and aromatics. Effect

Active Publication Date: 2022-04-29
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above catalytic cracking methods have a good effect in cracking heavy oil to produce light olefins, but the current catalytic cracking technology can only deal with oil products with high hydrogen content, low content of asphaltenes and heavy metals such as nickel and vanadium
[0009] However, in the world, the production of paraffinic crude oil is quite limited, and resources are in short supply

Method used

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  • Catalytic conversion method for inferior oil product
  • Catalytic conversion method for inferior oil product
  • Catalytic conversion method for inferior oil product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation process of the catalyst used is as follows. Mix kaolin, halloysite and water for beating, add amorphous silica-alumina oxide, alumina, silica gel and stir evenly, then add aluminum sol for beating evenly, finally add MFI modified molecular sieve, FAU modified molecular sieve, BEA molecular sieve and stir evenly, Adjust the pH of the slurry to 3.5 to 4.0, then add a mixed solution of ferric nitrate, magnesium nitrate, cerium nitrate, and manganese nitrate, and stir evenly. Calculated on a dry basis of oxides, kaolin, halloysite, amorphous silicon aluminum oxide, and Silicon, aluminum sol, MFI modified molecular sieve, FAU modified molecular sieve, BEA molecular sieve and the ratio of iron oxide, magnesium oxide, cerium oxide, manganese oxide are 30.0%, 6.4%, 8.5%, 3.5%, 5.0%, 24.0%, 6.5%, 5.4%, and 4.0%, 1.6%, 3.0%, 2.1%, the solid content is controlled at 27%, and the mixed slurry is spray-molded.

[0038] The preparation method of MFI modified molecula...

Embodiment 2

[0052] This example uses raw material oil with embodiment 1, uses catalyst to be conventional catalytic cracking catalyst. The catalyst is composed of kaolin, aluminum oxide, aluminum sol binder and molecular sieve, and the proportions of Y molecular sieve and ZSM-5 contained in the catalyst are 16.5 and 18.3% respectively. Operation scheme is the same as embodiment 1. The implementation effect is listed in Table 2.

[0053] As can be seen from Table 2, using the method provided by the invention, when using the inferior intermediate heavy oil with a hydrogen content of 12.29%, an asphaltene content of 3.0%, and nickel and vanadium content of 12.5 μg / g and 5.1 μg / g as raw material, the implementation The total yield of low carbon olefins and aromatics in Example 2 has also reached 50.7%, and the yield of low carbon olefins in Example 1 has reached 31.2%, the total yield of low carbon olefins and aromatics has reached 72.0%, and the coke yield has only 8.2% %, the two examples...

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Abstract

The invention provides an inferior oil product catalytic conversion method, which comprises: carrying out a contact reaction on crude oil and a catalyst in a first downer reactor, introducing into a diameter expansion reactor, separating the reaction product to obtain low-carbon olefin and aromatic hydrocarbon, introducing a part of the separated light component into a riser reactor, and carrying out a contact reaction on the light component and the catalyst to obtain the inferior oil product. And feeding the semi-spent catalyst into an expanded-diameter reaction reactor. The method is suitable for producing low-carbon olefin and aromatic hydrocarbon products through catalytic conversion of crude oil, and has the characteristics of high raw material adaptability and high yield of the low-carbon olefin and aromatic hydrocarbon products.

Description

technical field [0001] The invention relates to a method for catalytic conversion of inferior oil products. Background technique [0002] Catalytic cracking is an important means of lightening heavy oil. This process is the main means for refineries to convert heavy oil into gasoline, diesel and liquefied gas. Widely reported in China (Xu Chunming, Yang Chaohe. Petroleum Refining Engineering (Fourth Edition) [M]. Petroleum Industry Press, 2009; Chen Junwu, Xu Youyou. Catalytic Cracking Process and Engineering (Third Edition) [M]. Sinopec Press, 2015.). On the basis of catalytic cracking, in recent decades, a catalytic cracking process has been developed, which aims to produce more high-value low-carbon olefins such as propylene butene. [0003] Chinese patent CN110724551A proposes a method and system for catalytic cracking using a dilute-phase transport bed and a turbulent fluidized bed. Raw catalyst, and then the semi-spent catalyst and the first oil and gas product unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/06B01J29/80
CPCC10G55/06B01J29/80B01J29/48B01J29/7815B01J29/16
Inventor 吴青范景新辛利臧甲忠靳凤英郭春垒陈博阳李滨李福双王银斌刘晗
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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